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CBECC-Res USER MANUAL FOR CALIFORNIA BUILDING

1. Currently Active HVAC System Existing System gt System Name Existing Systern Status Existing v System Type Other Heating and Cooling System El Area Served 1 665 D stories Heating Pa Unique Heating Unit Types Heating Unit Existing Furnace Si Count 1 Vv 1 CntriFurnace unit s AFUE 75 0 Iw Cooling DI Unique Cooling Unit Types Cooling Unit Existing AC Si Count 1 Iw 1 SplitAirCond unit s 8 0 SEER 7 1 EER 350 0 CFM ton lv Distribution Ducts El Fan Existing HVAC Fan E activate CFI cool vent via Cool Vent tab of the Project data dialog Figure 10 8 Existing System Addition ZoneDuct System Distribution System Data Currently Active Distribution System Ducts v Name Ducts Status Existing 4 y Type Ducts located in unconditioned attic M Has Bypass Duct M Use defaults for all inputs below x Duct Leakage Sealed and tested z Duct Insulation R value 6 0 F ft2 h Btu Existing R value 2 1 v F ft2 h Btu M Verified Duct Design M Has Buried Ducts Has Deeply Buried Ducts Adding a separate system for the addition For the existing zone set the system status to existing and model the actual values for the existing system and ducts For the addition zone define a separate system with the system status new with the proposed conditions of the new supplemental system and duct conditions 10 5 3 Water heating If al
2. Ductless Heat Pump One or more heat pump outdoor units that use refrigerant to transport heat to at least one terminal in each habitable space in the dwelling unit These include small ductless mini split and multiple split heat pumps and packaged terminal commonly called through the wall units Distribution is non ducted Efficiency metric HSPF COP Package Heat Pump Central packaged heat pump systems Central packaged heat pumps are heat pumps in which the blower coils and compressor are contained in a single package powered by single phase electric current air cooled rated below 65 000 Btuh Distribution system is ducted Efficiency metric HSPF Large Package Heat Pump Large packaged units rated at or above 65 000 Btu hr e mode Distribution system is ducted 3 heatpumps Efficiency metric COP Room Heat Pump A factory encased Same as Ductlesst heat pump that is designed as a unit for mounting in a window through a wall or as a consoleexceptthatheatis notsuppliedto each habitable spaceinthe dwelling uait Distribution is non ducted Efficiency metric COP Air to Water Heat Pump An indoor conditioning coil a compressor and a refrigerant to water heat exchanger that provides heating and cooling functions Also able to heat domestic hot water Efficiency metric COP and EER Ground Source Heat Pump An indoor conditioning coil with air moving means a compressor a
3. 5 3 6 12 7 4 Cathedral ceilmg eee ceeeeteeeeeenteeeeeenteeeees 6 3 ele re 5 4 AE A 5 3 6 12 7 4 Exceptions for emittance eee 5 3 Exceptions for solar reflectance 5 3 M UaU seoir ii 6 6 OW Sl pE TTT 6 4 mandatory insulation 6 2 OEE e E AE E E EE A 6 3 Dillon 6 11 7 3 radiant barrier ooooonnccccnnnnccccnnoccccnnnanannnnnnnnno 6 4 CBECC User Manual ratter TOO ne R aa a 6 3 raised heel russ 6 9 EEN 6 11 7 3 solar refleclance 6 12 7 4 Steen slopa e 6 4 Roof construchon 5 3 Roof Pitcairn tica ide 5 2 ROOF Se eiretie reetis EES SE 5 2 Cole vaur EE 8 1 SEER HERS verified high SEER 8 14 Single family dwelling cece 4 6 EE 6 15 Sylar dal dicen 7 12 fS EE 1 o AAEE keith BARGER BAAS 7 17 covered exposed AA 7 18 edge meulation eeeeeeeeeeeeeeeeeteeeeetteeeeee 7 18 Software updates oococicicicnonnnnnnnononananananacananncncncnos 1 2 Solar reflectance default 5 3 6 12 7 4 SPF Closed cell neure ar eia 6 2 default R Values oooonoccccnonoccccconoccccnananccnnnn 6 3 Non standard check Dos 6 2 Open Cel errea nA 6 2 Spray foam insulation verified insulation Quality ccc 6 2 Standard design coconocicicnonnnnnnnnonanananananononacncncnanos 1 5 Standards documents 1 4 Standards version Compliance 2014 4 3 Compliance 2015 4 3 WEEP SlOP Ea A RARA REO EE 5 4 Steep slope roof 6 5 aged solar reflectance oooooccconnoccccnnnoccccnonns 6 5 SUPPLY e EE
4. Door areas and orientation Slab or raised floor area and construction details Window and skylight areas orientation U factor Solar Heat Gain Coefficient Building overhang and side fin shading Mechanical heating and cooling equipment type and efficiency Distribution system location and construction details Method for providing mechanical ventilation and Domestic water heating system details including type of water heating equipment fuel type efficiency distribution system details A Ge ee GA Eh PE ONES 1 2 CBECC User Manual Overview 1 7 Documentation CBECC creates a CFIR when you check the PDF box under the Analysis tab accessible by double clicking on Project The CF1R will have a watermark that the CF1R is not yet registered see Section 1 8 if using valid software with the CF1R generated as part of the compliance calculations During the registration process the documentation author and responsible person fields will be completed There fields are not program inputs ferthesefields Another option for generating a CF1R is toAfteran analysisis performed you canalse producea CFIR by selecting Generate Draft T 24 Compliance Report from the tools menu Note the watermark will display not useable for compliance for a full explanation of the security features that results in the different watermarks see the frequently asked questions from November 20 2013 and March 18 2014 accessible from Help Quick St
5. Watermark ooien ia 1 3 2 3 CFIR registered EE 4 3 V HERE 4 5 Climate zoe ot 1 6 4 2 Close cell spray foam insulation sss ssess1010 6 2 Combined hydronic heating en 8 11 Compliance manager ccccicicocnnnnonananananananananncncnanos 15 Conditioned ZONE sujsunonecugaranp aup 5 5 Controlled ventilation crawl space 5 5 COOLTOOR E 5 4 Cooling Non central systems oooooocccnocicinonocccccanons 8 15 Cooling equipment types 0 0 8 13 Cooling ventilation ccc cet ceeeeeee 4 9 SE ten Cena cee eee E 8 23 COP to HSPF equation 8 6 8 12 CAER 5 4 EC tattoo tee 5 5 Documentation author 1 3 Domestic hot water system moocccncocononinronononnnrooos 5 7 Doors garage enee anan iaa eet 7 7 opaque U factor neioii ria 7 7 WIN dass 7 6 7 11 Duct Leakage Target leakage ooooonccccnnnnnccnnnccccnnnncnnnnnos 8 17 DU tiles iia 8 17 DUMIO WEEN 8 19 A A A Seege eee ech 8 19 HERS verified conditions c eeeee 8 19 type and Jocatton 8 18 Dwelling umit eeeeeeeeeeereneeeees 4 7 multifaMilY oessa A 4 7 EER HERS verified EER cesses eee 8 14 Electric radiant heat 8 12 Electric resistance heat 8 12 Emissivity see EMIMANCE iii iii 5 3 Emittance default 5 3 6 12 7 4 Error MESSAGES iii initial 2 8 Evaporative cooltmng 8 1 8 16 Fan efficacy CBECC User Manual mandatory redulrement essee 8 22 Federal appliance standard 4 3 Fenestration AA RON 7 8 EOS A AAA 7 10 Floor mandatory Imeulaton 6 2
6. 4 8 E anann 4 5 Insulation ou alt 4 5 Knee wall ooonnoccinucnnonccinnncnonnninnncnnnos 6 4 6 15 7 4 Low slope aggregate surface cococococicnconanonononananes 5 4 CBECC User Manual Low slope root 5 4 6 4 aged solar reflectance ooococoononcccnnacccccnnns 6 4 Mandatory reduitements 1 6 ES sogesesasnstcncSsnsecess covstentsepevetovoxecests 8 1 Multi family buildtmg ue 4 6 defining the building ee eeeeeeeeeeeees 4 6 Multiple conditioned zones 5 1 Multi split EE 8 1 Natural gas availatbulttv ccceseeeeeeeees 4 6 NR ge ee 8 15 A a n a 4 5 CEM OM bs 8 14 Watts CEMi sisi adas 8 22 Non central heating minimum AF UE 8 12 Number Of storili saaneena a R 5 6 Open cell spray foam insulation 0 0 6 2 Orientation building front 4 5 Wl tt ld defi 7 1 PACKAGE A inciso aia toos 1 5 Project CliMate ZONE ccccccicnc ncnncnacaranincinraniancanaidni ns 4 2 APC iii 4 2 Proposed desien eset tei 1 5 PV System Credit 4 3 4 4 A A MA 4 5 spray foam Imsulatton 6 2 Quick Start Guide conocieron 2 3 Radiant barrier oooonccononcconuncconnnonanoconanonnnonnno 6 4 6 6 IN Dart Of POOF ororena 5 1 Rafter TOO cinerea R a 6 3 Raised Hee en eat AE 6 17 7 13 Crawl SPACE zone 5 4 OVEN exteriOT oooccccccccoconococonnnnnonononooo 7 13 7 16 OVer garage nnn 7 14 Registered CIR 1 3 Report manager 1 5 Return ducts ii 8 19 Rinde totes 6 4 above deck insulation cee 6 6 aged solar reflectance
7. Central packaged air conditioning systems less than 65 000 Btu hr cooling capacity Distribution is ducted Efficiency metric SEER and EER Room Air Conditioner A factory encased Same as Ductless Solit air conditioner that is designed as a unit for mounting in a window through a wall or as a consoleexceptthat heatis net suppledte each habitable space in the dwelling_unit Distribution is non ducted Efficiency metric EER Split Air Conditioner Split air conditioning systems Distribution is ducted Efficiency metric SEER and EER 8 3 1 8 3 1 1 Name Cooling System Data User defined name for the cooling system 8 3 1 2 Type Cooling system type see Table 8 3 8 13 CBECC User Manual Mechanical Systems Figure 8 9 Cooling System Data Cooling System Data Currently Active Cooling System Cooling System v Name Cooling System Type SplitAirCond Split air conditioning system si M SEER 13 0 kBtu hyvkv T Multi Speed Compressor EER 11 3 kBtuh kVWV Vv CFM per Ton 350 CFM ton Sizing Factor 1 10 ratio AC Charge Verified z Refrigerant Type R410A 8 3 1 3 SEER Cooling equipment Seasonal Energy Efficiency Ratio SEER For equipment tested only with an EER enter the EER as the SEER When a value higher than 13 SEER for Compliance 2014 is modeled it triggers a HERS Verification of High SEER With Compliance 2015 the minimum efficiency requirement of the
8. Cooking 796 29 37 14 79 32 9 37 14 Pass Plug Loads 1 147 41 36 1 147 41 36 Exterior 5 0 17 5 0 17 TOTAL 2 876 241 0 194 59 2 856 242 2 193 09 3 6 CBECC User Manual Tutorial 28 29 30 31 32 The project complies Note that due to the defaulting built into the program it is assumed to have a whole house fan and a radiant barrier which may not be desired As part of this tutorial we will try trading off some features If you notice the above compliance margin is in compliance on cooling so trading away some of the measures that help cooling is feasible Double click on Attic This is where the Reflectance and Emittance values for a cool roof product are changed The roof has a roof rise pitch of 5 12 The Construction is where the radiant barrier and above deck not typical ceiling insulation and the roofing material is modeled Click lt OK gt and move down to the Construction Assemblies click on the sign and double click on Asphalt Shingle Roof Because Package A in climate zone 12 has a radiant barrier the program included that feature Uncheck the radiant barrier box Click lt OK gt again Double click on Project and pick the Cool Vent tab off to the right If no whole house fan is desired change the default prescriptive whole house fan to none and click lt OK gt Click on the Mechanical tab and double click on the Heating or Cooling System to change the efficiencies Change the heating system
9. IAQ Cool Vent People CAHP Run Title 1 Story Example Rev 11 Generate Report s PDF J Full XML Analysis Type Proposed and Standard V Project applying to CAHP Standards Ver Compliance 2015 EI any time with 2015 Federal Air Conditioning Requirements and solar credit PY System Credit Rated Power kWdc Seasonal changeover 60 F Analysis Report Building Summary csv Fan vent lockout 68 5 lal ba Run Scope Newly Constructed 4 2 CBECC User Manual Project 4 3 1 1 Run Title Run title is a field for the software user s own notes or project information The information will not appear on the CF1R It can be used to identify information such as a compliance variable being considered e g w tankless water heater 4 3 1 2 Analysis Type The two types of analysis are proposed and standard design typical for compliance and proposed only 4 3 1 3 Generate Report s Two options are provided to generate 1 a PDF of the compliance report for review purposes and 2 the full XML once the project is ready to produce the compliance documentation for upload submittal The PDF automatically generated by having the PDF option checked will have a watermark that it has not been registered Projects that require HERS verification will need to be uploaded to a HERS provider to obtain a registered CF1R before applying for a building permit 4 3 1 4 Standards Vers
10. If using central fan integrated night ventilation cooling this is the furnace fan that operates in ventilation mode 8 1 2 Zonal Control With zonal control the sleeping and living areas are modeled separately for space conditioning Some of the requirements for this compliance option include each habitable room must have a source of space conditioning the sleeping and living zones must be separately controlled a non closeable opening between the zones cannot exceed 40 ft each zone must have a temperature sensor and a setback thermostat and the return air for the zone must be located within the zone Additionally zonal control credit is not available if space heating is provided by a heat pump or combined hydronic system A full list of eligibility criteria for this measure is presented in the Residential Compliance Manual Section 4 5 2 Figure 8 3 and Figure 8 4 show where the ability to model zonal control is activated via a check box and the zone type See also Sections 8 3 1 5 and 8 4 1 6 for information about the exception to the 350 CEM requirement for single speed zoned systems Figure 8 3 Zonal Control from Section 4 4 1 8 Project Analysis Building Dwelling Units Lighting Appliances IAQ Cool Vent Building Description 2700 t2 CEC Prototype Existing Condition Verified No z Air Leakage 5 0 ACH 50Pa Insul Construction Quality Standard y D Front Orientation 29 deg e Single Family
11. NOTE even if you wish to accept the default values type the value in so that the field turns red This set up allows you to change only the U factor and SHGC values on a project in the Window Types list without having to go back and edit every window entry see also 6 9 4 When adding the windows to the given walls the fields will be blue indicating they are connected to the Window Type library correctly Now add the door and windows to the envelope description The door and windows will be child components of the respective walls in which they are located Begin with the front door a Right click on the Front Wall choose lt create gt and then click on lt InputDoor gt b Follow the prompts The door is 20 square feet Use the default U factor 0 50 Return to the main screen Now move back up to the walls right click on the Back Wall to lt create gt a window Name it B1 and click lt OK gt The next dialog box asks you to choose between window dimensions and overall window area Choose window dimension so an overhang can be modeled and click lt OK gt You are now at the Window Data tab Select the Window Type from the library types just added e g Operable and enter the window height 3 and width 3 and set the multiplier to 2 since we will model identical overhangs for the two windows Notice that it has picked up the U factor and SHGC from the window Type Leave the remaining values as defaults 3 5 CBEC
12. 2012 contains the official standards adopted by the Energy Commission e Residential Compliance Manual P400 2013 001 SD June 2013 is the interpretive manual for complying with the standards also contains sample compliance forms e Reference Appendices for the 2013 Building Energy Efficiency Standards P400 2012 005 CMF May 2012 is the source document for climate zones HERS protocols for measures requiring verification by a HERS rater as well as eligibility and installation criteria for energy efficiency measures e Residential Alternative Calculation Methods ACM Reference Manual contains the rules that the software follows to establish the standard and proposed designs for a proposed building These documents can be ebtained downloaded from the Energy Commission website www energy ca gov title24 or purchased from California Energy Commission Publications Office 1516 9th Street Sacramento CA 95814 916 654 5200 1 4 CBECC User Manual Overview 1 13 Terminology 1 13 1 Compliance Manager The compliance manager is the simulation and compliance rule implementation software specified by the Energy Commission otherwise known as the public domain compliance software The compliance manager is named CBECC Res and it models the features of the building as specified in the standards Section 150 1 c and Table 150 1 A Package A to establish the energy budget for the building 1 13 2 Report Manager The report manage
13. 4 2 Figur 4 2 Analysis iO Mi BEE 4 2 Figure 4 3 Building Information sieisen ana ea inaa AAE EAA nn nn nc TEERAA AER E rnn rr a R cnc 4 4 Figure 4 4 Multi Family Dwelling Unit Details AA 4 7 Figure 4 5 Cooling Ventilation cecccccceeesceeeeeee cee eeeeaeeeeaceegeeeceaeeeeaaesgeeeeseaeeesaaesgeeaesgeeeeseaeeesaeseeaaeeseeesseeee 4 9 Figure 5 1 Attic Model Components nenn nen cananea 5 2 Figure 5 2 Attic Zone Dala cocine E abia 5 2 Figure 5 3 Crawl Space Zone conmcinicccninccnnononnncnnn nc nana 5 5 Figure 5 4 Conditioned Zone Data 5 6 Figur 5 5 Garage Zone Data emrenin Eege dee ENEE a 5 8 Figure 6 1 Attic Construction Dalai a iniaa aai ead Sela tin deve cde a 6 5 Figure 6 2 Ceiling Below Attic Data 6 7 Figure 6 3 Ceiling Below Attic Aesemfhy eect eeeeeeeeneeeceaeeesaaeeeeeeeseeeeeseaeeeeaaeseeeeeseaeeetaeeeeneeeed 6 8 Figure 6 4 Section at Attic Edge with Standard Truss cccccceceeeceeceeceeeeesaeeeeeeeeeeeeceaeeeeaaeseeeeeseaeeesaeeeeneeeed 6 9 Figure 6 5 Section at Attic Edge with a Raised Heel TrUSS cece ceseeseeceeeceneceneeeeeeeeeeseeeseeeesaeesaeeseeeaeeaaes 6 9 Figure 6 6 Cathedral Ceiling erasi epaia a a aaa a Aa aaa a aa aie a e a aia RRE EEEa 6 10 Figure 6 7 Cathedral Ceiling Data 6 12 Figure 6 8 Wood Framed Wall Construction Data 6 13 Figur 6 9 Interior W alae r reu aE E i atar ita ti 6 16 Figure 6 10 Uninsulated Exterior Wall 6 16 Figure 6 11 Floor Over Crawl espace 6 17 Fi
14. 6 Water Heater Data The specifications of the water heater accessed in Figure 9 3 are contained in the water heater data as shown in Figure 9 6 The fields will vary based on the tank type 9 6 CBECC User Manual Figure 9 6 Water Heater Data Small Storage Water Heater Data Currently Active Water Heater Min 50 Gal Name Min 50 Gal Heater Element Type Tank Type Energy Factor Tank Volume Input Rating Recovery Efficiency Natural Gas Small Storage y 0575 gal 40 000 Btufhr only needed for Hydronic Space Heating Figure 9 7 Large Storage Water Heater Data Water Heater Data Currently Active Water Heater Large 75 G 80 TE 2 0 SBL E Name Large 75 G 80 TE 2 0 SBL Heater Element Type Tank Type Efficiency Tank Volume Input Rating Recovery Efficiency 9 6 1 1 Name Natural Gas y Large Storage y og Standby Loss Fraction 0 022 frac e gal 76 000 Btufhr only needed for Hydronic Space Heating Domestic Hot Water User defined name that is specified in the water heating system data for the field water heater see Section 9 4 1 6 9 6 1 2 Heater Element Type Choose electric resistance natural gas propane heat pump or oil 9 6 1 3 Tank Type Choose boiler indirect large instantaneous large storage small instantaneous small storage or unfired tank Most instantaneous water heaters are small based on the r
15. Appliance Efficiency Standards changes to 14 SEER and only when an SEER higher than 14 is modeled is a HERS Verification of High SEER triggered Efficiency information can be obtained from the Energy Commission s appliance directories http www appliances energy ca gov AdvancedSearch aspx or from the Air Conditioning Heating and Refrigeration Institute AHRI Certified Products Directory http www ahridirectory org 8 3 1 4 EER Cooling equipment Energy Efficiency Ratio EER When an EER value higher than 11 3 is modeled with Compliance 2014 or an EER higher than 11 7 is modeled with Compliance 2015 it triggers a HERS verification For equipment with an EER rating only e g room air conditioner enter the EER as the SEER Because the EER depends on the specific combination of coil and condenser model numbers the EER ratings must be obtained from AHRI directory http www ahridirectory org 8 3 1 5 CFM per Ton The mandatory requirement for cooling airflow is 350 CFM ton for ducted cooling systems also assumed for dwellings with no cooling or 150 CFM ton for Zonal Single Speed systems Users may model a higher airflow All systems other than no cooling require HERS verified system airflow using diagnostic testing procedures from Reference Appendices Residential Appendix RA3 8 3 1 6 AC Charge Verified refrigerant charge Select not verified verified or Charge Indicator Display CID There is no mandatory requirem
16. Buried Ducts Select the check box for buried ducts see Figure 8 11 and enter the return duct length in feet for the portion of duct runs directly on or within 3 5 inches of the ceiling gypsum board and surrounded with blown attic insulation of R 30 or greater Determine the appropriate effective R value maytake eredit for increased effective duetinsulatien as shown in Table 8 7 assume the worst case where multiple conditions exist 8 20 CBECC User Manual Mechanical Systems 8 4 4 2 Deeply Buried Ducts Select the check box for deeply buried ducts see Figure 8 11 and enter the return duct length in feet for ducts installed in Ductsegments deeply buried in_lowered areas of ceiling and covered by at least 3 5 inches of insulation above the top of the duct insulation jacket may claim effective insulatien ofModel R 25 duct R value for fiberglass ceiling insulation and R 31 duct R value for cellulose ceiling insulation Figure 8 12 Buried Ducts M Verified Duct Design Area R Value Supply Ducts 567 2 6 0 y F ft2 h Btu Return Ducts 105 0 4 2 y F f2 h Btu wv Has Buried Ducts Iw Has Deeply Buried Ducts Buried Duct Length iz ft Deeply Buried Duct Length iz ft Buried Duct R value F R2 h Btu _ Deeply Buried Duct R value F R2 h Btu Table 8 7 Buried Duct Effective R values Nominal Round Duct Diameter Attic Insulation 4 5 6 7 8 10 12 14 16 Effective Duct Insula
17. Compliance California Building Energy Code Compliance CBECC Res 2013 is an open source software program developed by the California Energy Commission for demonstrating compliance with the low rise residential 2013 Building Energy Efficiency Standards standards The standards become effective for new construction on July 1 2014 CBECC Res was originally approved on September 11 2013 see Appendix A for the most recent resolution from the Energy Commission The low rise residential standards apply to single family dwellings R 3 occupancy group and to multi family buildings R 1 or R 2 with 3 stories or less Hotels motels and multi family buildings with 4 or more stories are outside the scope of the low rise standards The 2013 compliance manager is the simulation and compliance rule implementation software specified by the Energy Commission The compliance manager called CBECC Res models alt features that affect the energy performance of the building Mandatory requirements as specified in Sections 110 0 through 110 10 and 150 0 of the standards are not always modeled An exception for example is insulation values Section 150 0 includes mandatory minimum insulation levels for framed walls floors and ceilings It is the responsibility of the program s user to be aware of the requirements of the Building Energy Efficiency Standards This manual is a guide to the program s use It provides a description of softwar
18. Cool Vent Fan Cool Vent Fan y 1 500 CFM 0 580 WCFM when operating in cool vent mode Distribution Attic R6 E Fan HWAC Fan 1 a 8 1 1 3 Unique Heating Unit Types Indicate the number of unique system types Not the same as count which is the number of systems 8 1 1 4 Heating Unit Name of the heating system details of which are specified as shown in Section 8 2 8 1 1 5 Count Number of specified heating units to be installed 8 1 1 6 Unique Cooling Unit Types Indicate the number of unique system types Not the same as count which is the number of systems 8 1 1 7 Cooling Unit Name of the cooling system details of which are specified as shown in Section 8 3 heat pump cooling is included with heating in Section 8 2 2 8 1 1 8 Count Number of specified cooling units to be installed 8 1 1 9 Cooling Vent When displayed for a central fan integrated night ventilation cooling system select Fixed Flow 8 2 CBECC User Manual Mechanical Systems 8 1 1 10 Cool Vent Fan When displayed for central fan integrated night ventilation cooling specify the fan that circulates air for cooling ventilation or create a new fan with CFM and W CFM details This system will require HERS verification 8 1 1 11 Distribution Name of the duct or distribution system details of which are specified as shown in Section 8 4 8 1 1 12 Fan Name of the HVAC fan system details of which are specified as shown in Section 8 5
19. Installation of Spray Foam Insulation Building Envelope Air Leakage ACH 50 Pa NOT REQUIRED NOT REQUIRED NOT REQUIRED a ee WATER HEATING SYSTEMS Po Name Distribution Type Number of Heaters Solar Fraction WATER HEATERS A EN ME a EA E ES ee ae E Tank Volume Energy Factor or Tank Exterior Standby Loss Heater Element Type Tank Type gal Efficiency Input Rating Insulation R value Fraction WATER HEATING HERS VERIFICATION PCI CCA A D y CO CO e Recirculation with Recirculation with Pipe Insulation Parallel Piping Compact Distribution Point of Use Manual Control Sensor Control HVAC SYSTEMS AE SN ET GE A E O A A ee Heating System Cooling System Distribution Floor Area System Type Name Name Ducted System Fan System Served HVAC System 1 Other Heating and Cooling System Min Furn 78 Cooling Min Attic Default HVAC Fan 1 2100 Registration Number Registration Date Time HERS Provider CA Building Energy Efficiency Standards 2013 Residential Compliance Report Version CF1R 04142014 574 Report Generated at 5 7 2014 11 49 18 AM CERTIFICATE OF COMPLIANCE RESIDENTIAL PERFORMANCE COMPLIANCE METHOD CF1R PRF 01 Calculation Date Time 11 47 Wed May 07 Project Name 1 Story Example 2014 Calculation Description 1 Story Example Rev 12 Input File Name Exampl12 ribd Page 7 of 9 HVAC HEATING SYSTEMS gt Pp ame Efficiency Min Furn 78 CntriFurnace Fuel fired central furnace 78 AFUE HVAC COOLI
20. Items in the project tree Construction Assemblies and Material Layers are not project components but are a library of assemblies and materials At this point some of the folders are empty but will be populated by the time the input file is fully created To continue right click on the Project title From the drop down menu choose lt create gt then choose lt zone gt Enter the zone name House and click lt OK gt At the next dialog box the zone type is Conditioned and you will enter 600 square feet for the floor area and 8 feet for the average ceiling height Click lt OK gt You have created a child component to the project component which can now be described more fully You are at the Zone Data tab of the building model data dialog box where you will add an HVAC system to the conditioned zone a Click the drop down menu arrow at the HVAC System box and choose to lt Create new HVAC System gt At the next dialog box accept the default name by clicking lt OK gt b At the HVAC System Type pick from the drop down menu Other Heating and Cooling System and click lt OK gt 3 3 CBECC User Manual Tutorial c This opens the HVAC System Data fields where you will define the system starting with the Heating Unit From the drop down box where it has none pick lt create new heating system gt For now keep the default name Heating System 1 and click lt OK gt Pick the equipment type as C
21. OVK evlertor orrore iape creans p rari piid aiaiai int 7 15 over garaga noren a iena kaaa eat 6 18 asii 6 16 Eli Eine 5 6 Floor elevaton 7 15 7 16 Floor fUTMACE sasnranerasaerunaro onni 8 12 Floor tO oof iio ti ties 5 6 Frequently Asked Ouesttomng 2 3 Front orientation seseesesessssessseseesesessesesesssnesesse 4 5 tt Deeg 4 7 multifaMilY senno 5 7 A ER 5 7 Garage A ed 7 7 Geothermal heat pump ocococococcconanananonncnnncnonanos 8 10 Ground source heat pump 0 8 10 Heat pump A 0 0 E A 8 6 Heat Pump Air to water Source 8 8 8 10 Ground source 8 1 8 8 8 10 iii Heat pump equipment types ccoocccccccnnnnnnnnnannos 8 8 Heated Slabs ieurs e aE aT 7 17 AS Ate SE de i 8 12 Heating equipment types 0 0 cesses 8 5 Heating system AFUE standard for non central 8 12 Heating sytem COP to HSPF equation anaaaaenaaaan 8 6 8 12 HERS Provider ege AE 1 6 HERS registration File for uploading cooococcconnnocccnnccccccno 1 3 4 3 High quality insulation cece 4 5 HVAC different equipment types s es 5 1 multiple duct Conditions eee 5 1 Multiple SySteMS ooooocccononcccnonociconanacanonannnos 8 4 supplemental heat 8 4 zonal control sissi ariii sonaia cniin 5 1 HVAC SIS n a aa i l eia 5 7 Hydronic heating occcninonononononininnnnnnannnnononananos 8 11 IAQ ventilation cococnoonooononnconnconnconccnnoconocinonononns 4 7 indoor air quality ventilation
22. These tabs provide different views of the building description and provide access to two different subsets of building description data Figure 2 3 Main Screen S Untitled CBECC Res 2013 File Edit Ruleset View Tool Help 0 88 del zl sae el Envelope Mechanical fe Press Alt F to Open an Existing Project 2 5 Right Click Menu Options CBECC Res makes extensive use of menus accessible by right clicking the mouse button The functions available through these menus depend on whether you are on the main screen or in an input dialog window 2 4 CBECC User Manual Getting Started Main Screen Right Click Menu When clicked over a building component the following choices are available e Edit Opens the input dialog window for the selected component e Rename Enables renaming the selected component e Delete Deletes the selected component e Copy Copies the selected component with all of its associated children components e Paste Adds copied components and children to the selected component e Expand Contract Expands or contracts the list of children components shortcut key is to use the or signs e Create Enables you to create new child components for the selected component Input Dialog Right Mouse Menu When clicked over an input value in the window the following choices are available e Item Help Accesses help information applicable to the selected input field feature
23. a A a AA S AE TA Eat 1 2 1 5 Fixed and Restricted NOUS erte EE 1 2 1 6 Preparing Baste INPUT aerea aaa EEEE O E OE A EE 1 2 1 7 DOCUMENTATION ET 1 3 1 8 Registered OF TR ra aea a a cha leas a a a Eaa barges ea a D a a aa aai caras ina 1 3 1 9 Special Features and Modeling Assumptions oooonocccnnccoconccnnonnnonananancccnnnnnn non n naar cnn cnn anna 1 3 1 10 Field Verification senan areenaan e a EEN E ie 1 3 1 11 Checklist for Compliance Submittal ooonniccnccnnnncnnnnonnncccnonccnnorcnn nara nann cnn cnc 1 4 1 12 Related Elie ee 1 4 1 13 Terminology iria 1 5 1 13 1 Compliance Manager 1 5 1 13 2 Report E Ee TEEN 1 5 1 13 3 Proposed Desi EE 1 5 1 13 4 Standard BE TEE 1 5 1 13 5 Mandatory Requirements A 1 6 1 13 6 CUM ZONE ii A A E IE teas 1 6 1 13 7 HERS Verifica iii A A vi ee eee ee 1 6 Chapter 2 Getting Started eene Eeer eege GENEE iaa 2 1 2 1 Installing CBECCROS iii EN 2 1 2 2 WOU TEE 2 1 2 2 1 NA 2 2 2 2 2 EIER rer reste 2 2 iti 2 2 3 Aulos e 2 2 2 2 4 VUE 2 2 2 2 5 Bel ER 2 2 2 2 6 Help WEE 2 3 2 3 Reie NET 2 3 2 4 Main Screen EE 2 4 2 5 Right Click Menu Options ooooococcconcccnoncccnoccnonocananoncnoncc conc cnn cnn crac 2 4 2 5 1 LEI Te 2 5 2 5 2 Building Tree Controls Parent Child Helattonshipe 2 5 2 5 3 Rapid Edil E 2 6 2 6 IU Deal nee EE 2 6 2 7 Ee e ele Kee ele 2 6 2 8 Sal Dan a abi 2 6 2 9 Defining New Component eraai ai eaaa iaa aa aea aa aa aae aA ar aa a ad aaraa aa aan aaah 2 7 2 10 Managing Bel
24. approving compliance software CBECC Res must also comply with the modeling requirements of the Residential Alternative Calculation Methods ACM Reference Manual which establishes the rules for the how the proposed design energy use is defined how the standard design energy budget is established and what is reported on the Certificate of Compliance CF1R CBECC Res is the 2013 Compliance Manager which is the simulation and compliance rule implementation software CBECC Res is used to model all components that affect the energy performance of the building as required for complying with the 2013 Building Energy Efficiency Standards A Certificate of Compliance CF1R signed by a documentation author and a responsible party either the building owner or designer reports all of the energy features for verification by the building enforcement agency Keywords ACM Alternative Calculation Method Building Energy Efficiency Standards California Energy Commission California Building Energy Code Compliance CBECC CBECC Res Certificate of Compliance CF1R compliance manager computer compliance energy budget energy standards energy use performance compliance public domain Title 24 Title 24 compliance software TABLE OF CONTENTS Chapter 1 Overview icons Radiaciones enian 1 1 1 1 Approval for Compliance s ista Gala tia iar ita iis nae 1 1 1 2 Ba CK Grund EE 1 1 1 3 Program e TEE 1 2 1 4 Software Capabilities sni sssrini inap a a a a a
25. attic T24 2013 R30 ceiling below attic T24 2013 R19 exterior floor T24 2013 R19 floor over crawl T24 2013 R15 interior wall T24 2013 R19 interior floor 6 3 Mandatory Envelope Requirements The mandatory roof insulation requirement in new construction is a wood framed ceiling or rafter roof with R 30 Section 150 0 a or a weighted average U factor of 0 031 formerly R 19 The mandatory floor insulation requirement is a wood framed raised floor Section 150 0 d with R 19 or a weighted average U factor of 0 037 formerly R 13 Under the Help button is a summary of the minimum mandatory requirements for opaque surfaces 6 4 Spray Foam Insulation SPF The R values for spray applied polyurethane foam insulation differ depending on whether the product is closed cell default R 5 8 inch or open cell default R 3 6 inch When completing a construction assembly for the roof ceiling walls or floor use the values shown in Table 6 2 to determine the default R value for the cavity size Alternatively with HERS verification and additional documentation requirements a higher than default value may be used as indicated by checking the box for non standard spray foam in cavity as part of the construction assembly see Reference Appendices Residential Appendix RA3 5 6 Table 6 2 Required Thickness Spray Foam Insulation Required R values for SPF insulation R 11 R 13 R 15 R 19 R 21 R 22 R 25 R 30 R 38 Required thickness closed cel
26. between the four main compass points North East South and West For additions and alterations the standard design has the same wall and window areas and orientations as the proposed building The basis of the standard design is prescriptive Package A from Section 150 1 c of the standards Table 150 1 A Package A requirements not repeated here vary by climate zone Reference Appendices for the 2013 Building Energy Efficiency Standards Reference Appendices Joint Appendix JA2 1 5 CBECC User Manual Overview Table 2 1 contains the 16 California climate zones and their representative city The climate zone can be found by city county and zip code in JA2 1 1 Detailed information about how the standard design is established can be found in the Reference Manual see Section 1 12 1 13 5 Mandatory Requirements Mandatory requirements are found in Sections 100 0 through 110 10 and 150 0 of the standards Any requirement that is mandatory some are modeled some are not cannot be removed from the proposed building For example a building in climate zone 10 may be built without a whole house fan as long as it complies without that feature because the whole house fan is a feature of Package A in Section 150 1 While the standard design building has all of the features of Package A measures that are more efficient or less efficient can be modeled in the proposed design as long as it meets the mandatory minimum requirements and meets the
27. child to the parent component e Right click on the component to which you want to add the new component e Select Create then select the type of object you want to add only applicable component types will appear on the list e Accept the defaults or edit the name parent and existing component from which to copy and click OK e Edit the input fields with white backgrounds to describe the new component and click OK 2 7 CBECC User Manual Getting Started 2 10 Managing Project Files By default project files are stored at C Users lt your username gt My Documents CBECC Res 2013 0 Projects although this depends on where you installed the program To retain a project in the most efficient manner keep the file name with extension ribd residential input building design Additionally the file name with the extension log is useful for troubleshooting The other project files are recreated when an analysis is performed 2 11 Error Messages If a file will not run and you receive no clear error message a file stored in the projects folder contains the entire record of what occurred with the file Find a file in the Projects folder with the same name as your input file with the extension log and open this text file in notepad 2013 Jun 06 11 51 52 Opening Project jonesl ribd 2013 Jun 06 12 03 20 Project Saved 2013 Jun 06 12 03 23 Performing Building Database check 2013 Jun 06
28. energy budget A partial list of the changes affecting the building envelope is a minimum of R 30 ceiling roof insulation R 19 raised floor insulation and a maximum of 0 58 U factor for window see Section 150 0 q for exceptions Space conditioning system mandatory requirements include ducts with R 6 insulation that are sealed and have tested duct leakage air handler fan efficacy of 0 58 W CFM or less and cooling airflow of greater than 350 CFM ton These measures require a Home Energy Rating System HERS rater 1 13 6 Climate Zone California has 16 climate zones The climate zone can be found in the Reference Appendices Joint Appendix JA2 1 1 by looking up the city county or zip code The climate zone determines the measures that are part of the building s standard design see Section 150 1 Table 150 1 A in the standards 1 13 7 HERS Verification Some mandatory requirements and other optional compliance features require a Home Energy Rating Systems HERS rater to perform diagnostic testing or verify the installation HERS raters are trained and certified by one of the HERS Providers For a list of currently approved providers see WWW energy ca gov HERS providers html LD emai aaa HERS raters are trained and certified iy the aaia to aa EEN insulation installation inspections refrigerantehargetesting andanyverification and testing requirements as specified in the Reference Appendices Residential Appendices RA1
29. key runs file to determine if it passes or fails compliance 2 2 CBECC User Manual Getting Started 2 3 Review Analysis Results displays compliance results if available Generate T 24 Compliance Report generates a CF1R with a watermark that it is not useable for compliance for a not registered watermark see Section 1 7 Help Help Topics not yet enabled Quick Start Guide opens an overview of the software and frequently asked questions User Manual opens this document Mandatory Requirements for Assemblies opens a list of requirements for construction assemblies for example a steel framed wall with no rigid insulation does not comply with the minimum requirement of Section 150 0 About to determine the version of CBECC Res Tool Bar This section explains the program features accessed by clicking the icons on the tool bar at the top of the screen see Figure 2 2 New File This button closes the current file if one is open and opens a new file Open Existing File La This button launches the open dialog box to enable opening an existing file If another file is de open a prompt to save that file before proceeding will appear Save File This button saves the file under its current name or launches the save as dialog to enable a new file name Cut Selected Item This button is not currently enabled in CBECC Res 2013 Copy Selected Item This button enables you to copy the sel
30. leave the fields blue or swipe the cursor across the field right click and pick restore default This will change the SHGC value to 0 50 if you pick climate zone 1 3 or 165 or to 0 25 in climate zones 2 4 or 6 16 45 Figure 6 14 Window Type Window Type Data Window Overhang Window Fins Currently Active Window Type SGD bd Window Name SGD Specification Method Overall Window Area y E Window Area e NFRC U factor 0 3 Btuh ft2 F Solar Ht Gain Coef 0 2 Exterior Shade Insect Screen default 6 19 CBECC User Manual Building Envelope Chapter 7 Building Envelope Once the conditioned zone is defined see Figure 7 1 the different components of the building envelope can be created or modified Figure 7 1 Conditioned Zone Envelope Mechanical Zone Data e Project 1 Story Example Currently Active Zone Conditioned Me BB Attic 2 540 SqFt Il Conditioned 2 100 Ceiling belo Name Conditioned Zone Status New z Front EC Type Conditioned BB F2 Si vi HVAC System 1 y Fronto Floor Area 2 100 f2 NAC System BB Left Stories 1 BM Back Ceiling Height 9 ft Floor to Floor 10 ft ES B2 Dedo DHW System 1 Min Gas y El Di Sp Bottom 07 ft EN Win Head Height 7 67 ft 58 GarToHouse H GarToH E GarToHouse DHW System 2 none y da Floor Over Cr 15 HVAC Syster Min Gas RB Gara
31. material and roof structure is specified via the Roof Deck Surface Construction which is accessed under construction assemblies or by creating a new roof construction assembly as discussed in Chapter 6 Construction Assemblies 5 2 1 8 IR Emittance The default infrared or thermal emittance or emissivity for all roofing materials is 0 85 Otherwise enter the emittance value published by the Cool Roof Rating Council CRRC www coolroofs org If the roof membrane has a mass of at least 25 lb ft or for any roof area that incorporates integrated solar collectors the roof may assume the Package A emittance value see Section 5 2 2 If the roof is a cathedral ceiling or rafter roof the emittance is defined as part of the ceiling see Chapter 7 Building Envelope The roofing material and roof structure is specified via the Roof Deck Surface Construction which is accessed under construction assemblies or by creating a new roof construction assembly which is discussed in Chapter 6 Construction Assemblies 5 3 CBECC User Manual Zones 5 2 2 Cool Roof Cool roof is a term that refers to the ability of roofing materials to both reflect and absorb solar heat It typically means a high solar reflectance and a high emittance but can also be a low emittance and a very high solar reflectance Although specific values are not mandatory Package A the basis of the standard design contains a minimum requirement for solar reflectance and
32. maximum 0 58 U factor Create a library of window types using either default values or product specific values for U factor and SHGCs see 6 9 4 Since you must model each window individually this gives you the greatest flexibility by allowing you to update the window efficiencies with the least amount of effort When you create a new window type even if you wish to keep the default values be sure to retype them so the values on the window type screen are red Then when you pick the window type the window data screen picks up the values in blue from the window type fields 7 3 1 Windows Data Right click on the wall to which you will add windows and pick lt create gt and select window The screen shown in Figure 7 8 is displayed 7 7 CBECC User Manual Building Envelope Figure 7 8 Window Data Window Data Window Overhang Window Fins Currently Active Window B1 KA Window Name B1 Belongs to Exterior Wall Back New S Surface Status New El Window Type FIX El Specification Method Window Dimensions required for fins o y Iw Model Window Fins and or Overhangs Window Area a0 2 Width Og Height 5f Multiplier 1 NFRC U facto 03 Btuh ft2 F Solar Ht Gain Coef 0 2 Source of Ufactor SHGC NFRE gt Exterior Shade Insect Screen default v 7 3 1 1 Window Name User defined name If the plans use a window schedule or unique identifier that identifier can
33. quality insulation installation certified by the installer and field verified to comply with RA3 5 Default value is standard Specify either standard unverified or improved which means verified high quality insulation installation Also called Quality Insulation Installation QII improved requires HERS verification Credit for verified quality insulation installation is applicable to all insulated assemblies in the building ceilings attics knee walls exterior walls and exterior floors See Reference Appendices Residential Appendix RA3 5 4 4 1 4 Front Orientation This field defines the front orientation in degrees and must be accurate within 5 degrees This value is from the site plan and differs from the window and wall orientation see Section 7 1 While this input is typically the side of the building where the front door is located if the front door front facade or the side of the building facing the street are different any choice is acceptable as long as the end result is a CF1R with windows facing the correct erientatienactual azimuth The front orientation or actual azimuth is used to establish the orientation of walls and windows which are modeled using either labels such as front or left or the orientation with respect to the front and plan azimuth not the actual orientation see Orientation in Section 7 1 Multiple orientation or cardinal compliance is a valid selection for subdivisions where h
34. surface area and R value Field verification that duct system was installed according to the duct design including location size and length of ducts duct insulation R value and installation of buried ducts For buried ducts this measure also requires improved construction quality or QII and duct sealing Low Leakage Ducts in When space conditioning ducts are located entirely in directly Conditioned Space conditioned space this is verified by diagnostic testing Compliance credit can be taken for verified duct systems with low air leakage to the outside Field Verification for ducts in conditioned space and duct sealing are required Reference Appendices Residential Appendix RA3 1 4 3 8 Low Leakage Air handling Units Compliance credit can be taken for installation of a factory sealed air handling unit tested by the manufacturer and certified to the Commission to have met the requirements for a Low Leakage Air Handling Unit achieved Field verification of the air handler s model number is required Duct sealing is required Return Duct Design Verification to confirm that the return duct design conforms to the criteria given in Table 150 0 C or Table 150 0 D as an alternative to meeting 0 58 W CFM fan efficacy of Section 150 0 m 12 Air Filter Device Design Verification to confirm that the air filter devices conform to the requirements given in Section 150 0 m 12 Bypass Duct Condition Verification to determine if syste
35. the standard design is set using the actual efficiency of the existing windows which is 1 28 U factor and 0 80 SHGC 10 2 2 Efficiency Threshold Another factor in determining the amount of credit that is achieved by an alteration is the proposed efficiency of the alteration If an altered component does not meet the mandatory or prescriptive requirement set out in Section 150 2 the standard design will be based on the higher level For example if a ceiling has a verified insulation level of R 11 but the proposed alteration is to achieve R 19 the standard design is based on the standards requirement of R 30 and the proposed ceiling insulation alteration will receive an energy penalty If more information is needed the Reference Manual Residential Alternative Calculation Method Reference Manual P400 2013 003 SD Section 2 11 contains detailed explanations of how each feature of the addition alteration affects the standard design 10 3 Existing Building If the existing building will be modeled as part of an existing plus addition alteration analysis the user has the option of specifying the status of a component as existing altered or new Deleted or removed surfaces are not modeled Specify the characteristics of all existing altered or new components for example a new window in an existing wall associated with the existing part of the building For altered components see Section 10 3 If an existing garage is being convert
36. to 80 not 0 80 Double click on Water Heater 1 Change the Energy Factor to 0 62 Click lt OK gt At this point either save the input file with a new name or close the PDF of the CF1R Save the file and perform the analysis to see if it still complies Figure 3 3 Updated Output for Simple House Energy Use Details Summary Standard Standard Standard Proposed Proposed Proposed Compliance Design Design Design Design Design Design Margin End Use Site kWh Site therms kKTDWA2yn Site kWh Site therms kTDW A2yr kTD VAR unt Space Heating 54 62 6 20 74 55 62 8 20 80 0 06 Space Cooling 405 38 91 398 39 72 0 81 IAQ Ventilation 62 2 21 62 2 21 0 00 Other HVAC 0 00 0 00 0 00 Water Heating 145 5 38 85 127 1 33 99 4 86 PY Credit 0 00 0 00 Compliance Total 100 71 96 72 alga Inside Lighting 407 15 21 407 15 21 Result Appl amp Cooking 796 32 9 37 14 796 32 9 37 14 PASS Plug Loads 1 147 41 36 1 147 41 36 Exterior 5 0 17 5 0 17 TOTAL 2 876 241 0 194 59 2 871 222 8 190 60 results may vary slightly CBECC User Manual Project Chapter 4 Project It is often best to start with an existing input file for a similar project which will have the structure of the building set up However you have the option of starting with a blank project The sample files included with the software are one story slab or crawl space two story buildings one or two zones and a multi family building Once familiar with the program you c
37. 1 3 Construction Type Options are wood framed op built up roof steel framed and SIPs 6 6 1 4 Roofing Type Pick the appropriate roof type as either 1 steep slope roof tile metal tile or wood shakes or 2 all other 6 6 2 Construction Layers Working from the top to the bottom of the construction layers 6 6 2 1 Roofing The available types will depend on the roofing type specified Types include light roof roof tile asphalt gravel tile heavy ballast or pavers and very heavy ballast or pavers 6 6 2 2 Above Deck Insulation If above deck insulation is shown as part of the attic details model the R1 through R8to R60 insulation 6 6 2 3 Roof Deck The default is wood siding sheathing decking 6 6 2 4 Cavity Frame List the compressed R value of cavity insulation see Section 6 1 in the cavity column This is the insulation that is installed at the roof Typical insulation is modeled as part of the ceiling below attic The framing column is to indicate the size and spacing of the framing Options are 2x4 to 2x12 with 16 or fe 8 2x4 with 24 inch on center framing 6 6 2 5 Inside Finish This is the inside finish if any of the attic space and does not include the ceiling below the attic A layer of gypsum is not typically included 6 6 2 6 Non Standard Spray Foam in Cavity This check box identifies additional documentation and HERS verification requirements due a claimed R value that exceeds the default assumpt
38. 12 Buried DUCS icon t 8 21 Sie IER 8 22 Fig re 8 14 AQ Dalai A A a E Ee AE EEN 8 22 Figure 8 15 Cooling Ventilation oooooninnnnnnnnnnnnnnnncconncccnnncann narra nccn nr 8 24 Figure 9 1 Single Family Distribution Systems oooonnnccincccnncconoccnnnccnnonccnnnrn non n nano c cnn nano nana crac aran naar 9 2 Figure 9 2 Multi Family Distribution Gvstems nan n nan c cnn naar ranas 9 4 Figure 9 3 Recirculation LOOPS mtirics iaa tanda 9 5 Figure 9 4 Solar Water Heating Data Anna 9 6 Figure 9 5 Solar Water Heating Data Monthly o oooonccccnncccnnccconoccconoccnoncccnona nono nnnnnn cnn nn nano rra cnn rca rn annn nana 9 6 Figure 9 6 Water Heater Data Small Storage ccccceeeeceeeeeeeeeeeeeeeeeceaeeeeaaeeeeeeeseaeeeeaaeeeeaeeseeeeeseaeeesaeeseaeeeed 9 7 Figure 9 7 Large Storage Water Heater Data 9 7 A nee EE 10 1 Figure LAN Eiere EE 10 3 Figure 10 3 Addition HVAC and DHW ooccccoccccconcccnoncnononananonnnonccnnnnn naar cananea 10 3 Figure 10 4 Altered with Verified Existing Conditions cccccceceecceceeeeeeeeeeeeeeeceeeeesaaeeeeaeeseneeeseaeeetaeeneneeenaes 10 4 Figure 10 5 Altered Without Verified Existing Conditions ccccccccceeeeeeeeceeeeeceeeecaeeeeaeeseneeeseaeeesaeeneneeeeaes 10 5 Figure 10 6 Altered HVAC and DHW ccccicccicoconononononcnononananonnnnnc cnn rca rn 10 6 Figure LAG NEI EECH 10 7 Figure 10 8DUCESYS OM diia LA idad pad ia 10 7 xii TABLES Table 2 1 Table 2 2 Tabl
39. 12 03 23 Building Database check completed 0 error s found 2013 Jun 06 12 03 23 Error Garage Garage has too few child and or adjacent surfaces 5 minimum is 6 to be simulated evaluating rule Rule 130 37 Line 10660 Check for sufficient Garage SurfaceCount 2013 Jun 06 12 03 23 ERROR Error encountered evaluating rulelist ProposedModelSimulationCheck 2013 Jun 06 12 03 27 Opening Project jonesl ribd 2013 Jun 06 12 04 16 Project Saved This identifies a problem with the garage model which does not have enough surfaces modeled After adding a slab floor and a ceiling below attic the file runs If you still find no obvious errors look for a field in your input file that is blank such as an area or a U factor This type of error does not always produce an error message If it is necessary to send an e mail to cbecc res gmail com include the ribd file with your name and contact information Following is a list of potential error messages pszCSEEXEPath doesn t exist pszCSEWeatherPath doesn t exist pszDHWDLLPath doesn t exist One or more missing files CSE ASHWAT or T24 DHW ASM32 TDV UNZIP WTHR DLLs pszBEMBasePathFile doesn t exist pszRulesetPathFile doesn t exist Error initializing BEMProc database amp rules processor module Error initializing compliance ruleset Invalid project log file name too long VD 0 JO D WS WN r 2 8 C
40. 6 Standard Design 10 1 Verified by a HERS Rater a e 10 1 water heating oooooccccnnnnncicnnononnnnnnncnnnnnnos 10 7 Water heatmg 10 3 Aggregate ballasted roof default 0 ee 5 4 built up roof default eee eeeeeeeeeeeee 5 4 Arica O ticas 4 5 Alteration alone 10 1 Appliance directory ccc cece cece 9 1 Attached garage ocococonocicnonnnnnnnnnnonananananananinncncnanos 4 7 RES 5 1 6 3 MORA AA E 5 3 radiant baier 6 4 VENTING at aie Sala eas 5 2 Attic roof terminology ee eeeeees 6 3 IST e E 4 6 Blower door teSt ooooccnnnonnoninnennonnncrnarncncrnorncnnrnors 4 5 Building Energy Efficiency ACM Reference Manual 1 4 Compliance Manual 1 4 Reference Appendices oocococcccccccccccccnoncnnnos 1 4 Standards ici 1 4 Buriedsductssccesccacacekncautacan awed 8 20 Cathedral ceiling ue 6 3 7 3 Cavity Rovall oococnnnininininnnroononcncnnnananocorororosonanasa 6 1 V E EE 1 1 create a Component cee 2 7 erfor MESSAGE cria 2 8 Metalga ns 2 1 menu Dun ti 2 1 project files drear edar idiei iea 2 8 right click Menu ooooccccnonociccnanocnnonanancnnnnnanos 2 5 software updates ooooonoccccnnnocccinononcccnnnancnnnns 1 2 status Dara s E 2 6 eeh 2 3 O 4 1 fue NET EE 3 1 CBECC User Manual Ceiling Below att 6 7 lat 6 7 Ceiling below attic cccceeeeeeeesesereteneeees 6 4 Ceiling height ENEE 5 6 CFIR Generating draft eeen 2 3 Generating nal 1 3 RegisteriND cocicicncniniacnicccna nai cnn ion concerns 1 3
41. 6 8 3 5 Exterior Finish Exterior finish options are wood siding 3 coat stucco or R4 synthetic stucco also known as 1 coat stucco and wood siding sheathing decking 6 8 3 6 Non Standard Spray Foam in Cavity This check box identifies that additional documentation and HERS verification requirements apply because the claimed R value exceeds the default assumption of R 5 8 per inch for closed cell and R 3 6 per inch for open cell see Section 6 4 6 14 CBECC User Manual Construction Assemblies 6 8 4 Structurally Insulated Panels SIPs 6 8 4 1 Inside Finish Default value gypsum board 6 8 4 2 Sheathing Insulation List the continuous insulation layer on the inside surface conditioned space side of the SIP wall Options are R1 to R60 insulation 6 8 4 3 Panel Rated R 75 F Specify the panel s rated R value at 75 degrees in the cavity path R14 to R55 In the frame path list the thickness of the panel and whether it is or is not OSB 6 8 4 4 Sheathing Insulation List the continuous insulation layer on the outside surface of the SIP wall Options are R1 to R60 insulation 6 8 4 5 Exterior Finish Exterior finish options are wood siding 3 coat stucco or R4 synthetic stucco also known as 1 coat stucco and wood siding sheathing decking 6 8 5 Demising and Interior Walls Walls separating conditioned space from unconditioned space e g from house to garage knee walls are modeled in the conditi
42. 8 18 Surface status 7 5 Thermal emittance default 6 12 Ventilation cooling ccononononononinininnnnnnnononanananos 4 9 Whole house fan cocccconccccnonoccccnononcccnnnanccnnns 4 9 Verified insulation quality 4 5 Wall Advanced Wall Framing ooooocconnnncccnnnnnccccno 6 3 Walla eege eege dE eene et 7 5 Wall en EE 8 12 Wall orientation ooooncnicnncnncnonnnononncononnnoncnnnnncnnno 7 6 Wall Ss 6 12 between house and garage 6 15 demisimg ccccoococccocccnnoncnananononcnnnnnncnnnno no aina iia 6 15 garage exterior cocccccnnnnccccnnnocccnnonanccnnnnnncnns 6 16 MIENON oeiia a n 6 15 knee WallS ooocccccccocononononnnn 6 4 6 15 7 4 CBECC User Manual Mass ICF brick masonry adobe 6 13 SP elit 6 13 6 15 Slot aa 6 13 Strawbale sms ata 6 13 UNIMSUIALCG civic rain iia 6 16 Water heater different types in Same Zone 5 1 distribution type sirrinin 9 2 9 4 heating element 9 7 smallor larg aiii 9 1 solar frACtiON sieaa e 9 6 solar Syste BEE 9 5 standby OSS EE 9 8 TANK e EE 9 1 9 7 TYPO ege sees ENEE eebe ees 9 1 Watts CFM mandatory redguirement 8 22 Aeka s lla BEE 8 22 Whole house fan ocoooconccnocnocccnconcnnnononononncnconncnnon 4 9 Window vi QIASS door aeei a 7 11 mandatory maximum U factor o co 7 7 Multiplica 7 9 Overall WINdOW area 7 8 SAC daa 7 9 e LEE 7 12 Utada ds 7 9 Window dimensions sssr 7 8 wipndow YPE coococccococcccnnconcncnononananonnnos 6 19 7 8 Wi
43. ADFP See Section 7 3 1 13 7 5 Raised Floor When a raised floor is over an unconditioned space such as a garage model this as an interior floor CBECC recognizes that the outside condition is an unconditioned space When creating a raised floor over a crawl space the software will create the associated crawl space zone 7 5 1 Floor over Crawl Space Figure 7 12 Raised Floor Floor Over Crawlspace Data Currently Active Floor Floor Over Crawlspace gt Extrior Floor Name Floor Over Crawlspace Belongs to Zone Conditioned E Surface Status New El Construction R19 2x6 FlrOvrCrawl El Floor Area 2 100 f2 Floor Elevation 17 ft 7 5 1 1 Exterior Floor Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 7 5 1 2 Belongs to Zone Select any appropriate zone already included in the building model When copying components of one zone to another this field automatically changes 7 5 1 3 Surface Status Select New Existing or Altered 7 5 1 4 Construction Raised floor over crawl space exterior floor or interior floor If an appropriate construction assembly is not available right click and pick lt create gt discussed in depth in Chapter 6 Construction Assemblies 7 5 1 5 Floor Area Area of the floor in square feet 7 13 CBECC User Manual Building Envelope 7 5 1 6 Floor Ele
44. AHRI Certified Products Directory http www ahridirectory org Capaci is used to determine the energy use of the backup electric resistance heat In a multi family building ou will indicate the capacity for the defined system and specify the number of units of that given capacity assigned to the zone see Section 8 1 1 5 8 2 3 5 Canach 17 Degrees F Required value from the AHRI Certified Products Directory http www ahridirectory org CBECC User Manual Mechanical Systems 8236 FER Cooling equipment Energy Efficiency Ratio EER On the HVAC System Data screen check the box System Heats DHW see Figure 8 7 and enter the tank volume insulation R value and ambient conditions Figure 8 7 Air to Water Source Heat Pump Heat Pump Data Currently Active Heating System AWHeatPump Ad Name AVVHeatPurnp Type AirToWaterHeatPump Air to water heat pump able to heat DH y AirToWaterHeatPump An indoor conditioning coil a compressor and a refrigerant to water heat exchanger that provides heating and cooling functions Also able to heat domestic hot water Efficiency Metric COP Heating Performance Cooling Performance Capacity Btuh COP ratio EER 11 7 kBtuhAW 47 F 30 000 3 17 F 18 000 1 8 HVAC System Data Heating Equipment Cooling Equipment Heat Pump Equipment Currently Active HVAC System Hvac System 1 El System Name Hvac Sys
45. BECC User Manual Getting Started 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 DHW simulation not successful 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 31 Error writing to project log file Building model input project file not found Error reading initializing model input project file Error evaluating ProposedInput rules Error retrieving CSE weather file name from Proj WeatherFileName Energy CSE simulation weather file not found Error retrieving DHW weather file name from Proj DHWWthrFileName DHW simulation weather file not found Error retrieving required data Proj RunID and or Proj RunAbbrev Analysis processing path too long Error evaluating ProposedInput rules Error evaluating PostProposedInput rules Error evaluating BudgetConversion rules Error evaluating ProposedModelCodeCheck rules Unable to create or access analysis processing directory Unable to open delete write simulation output file csv or rep Unable to open delete write simulation weather file Error copying simulation weather file to processing directory Unable to open delete write simulation input cse file Error writing simulation input cse file CSE simulation not successful error code returned Error encountered loading CSE DLL s Error evaluating ProposedModelCodeCheck rules Error evaluating ProposedModelSimulationCheck rules Error ev
46. Below Grade Parallel Piping Recirculation Non Demand Control Recirculation Demand Control Push Button Recurculation Demand Control Occupancy Motion Water Heater s HERS req d Pipe Insulation All Lines HERS req d Parallel Piping HERS req d Recirculation Non Dernand Control HERS req d Recirculation Demand Control Push Button HERS req d Recirculation Dernand Control Occupancy Motion HERS req d Point of Use HERS req d Compact Distribution System CBECC User Manual Domestic Hot Water Table 9 1 Water Heater Distribution System Multipliers Distribution System ir NO HERS INSPECTION REQUIRED Standard 1 00 Pipe Insulation All Lines 0 90 Insulated and Protected Pipe Below Grade 1 40 Parallel Piping 1 05 Recirculation Non demand Control no control runs 24 hrs day 7 00 Recirculation Manual Demand Control Push Button 1 15 Recirculation Demand Control Occupancy Motion 1 30 OPTIONAL CASES HERS INSPECTION REQUIRED Pipe Insulation All Lines 0 80 Parallel Piping 0 95 Compact Design 0 70 Point of Use 0 30 Recirculation Demand Control Push Button 1 05 Recirculation Demand Control Occupancy Motion 1 20 Point of Use 0 30 Compact Distribution System 0 70 Non Compliant Installation Distribution Multiplier 1 20 9 3 2 Multi Family Distribution Type When using central water heating in a multi family building the options for distribution syste
47. C Multi family Iw Natural Gas is available at the site Number of Bedrooms 4 Iw Zonal Control Credit living vs sleeping V Has attached garage 8 3 CBECC User Manual Mechanical Systems Figure 8 4 Type from Section 5 4 1 Zone Data Currently Active Zone Conditioned z Name Conditioned Type Living z Floor Area 1 350 0 f2 Num of Stories 1 Ceiling Height 9 0 it Floor to Floor 10 0 ft HVAC System HVAC System 1 v Bottom 0 7 ft DHW System 1 DHW System 1 E Win Head Height 77 ft DH System 2 L none y 8 1 3 Multiple HVAC Systems When multiple systems of the same type serve different areas of a building it is the user s option to separately zone the systems If modeled as one system use either a weighted average efficiency or the lowest efficiency For multi family buildings modeled by floor rather than by dwelling unit if the equipment efficiencies are different the software will use the lowest efficiency unit When multiple systems of different equipment or fuel types serve the building each type must be modeled as a separate zone to accommodate the different equipment types When multiple systems serve the same floor area only one system can be modeled The system modeled depends on the size and types of systems If the capacity of the secondary system does not exceed 2 kW or 7 000 Btu hr and is controlled by a time limiting device of 30 minutes or less the system is considered su
48. C User Manual Tutorial 22 23 24 25 26 27 To add an overhang click on the Window Overhang tab at the top of the screen You will see an illustration of the inputs Enter a Depth of 2 feet a Dist Up of 1 foot and an Extends Left and Extends Right of 7 feet each Leave the Flap Height as 0 Complete the overhang by clicking lt OK gt Still on the back wall create a 5 x6 8 sliding glass door by right clicking picking lt create gt a window named SGD copy window B1 Pick SGD from the window type library and enter the width as 5 and a height of 6 67 Change the overhang to have a left distance of 3 and a right distance of 22 Finally right click the Right Wall using the same method to create a window Tell the program to copy the data from the first window changing the multiplier to 1 Change the overhang Extends Left and Extends Right values to 10 5 each All other data remain the same Click lt OK gt Next add a slab floor by moving back up to House Right click and choose lt create gt and then pick lt Slab on Grade gt Enter an area of 600 square feet a floor elevation of 0 67 or the level of the surface of the floor above grade and a perimeter equal to the length of the four sides exposed to the exterior 100 Note If there was a garage the edge no longer includes the length of the edge adjacent to the garage but only adjacent to the exterior Keep the surface set to d
49. California Energy Commission STAFF REPORT CBECC Res USER MANUAL FOR CALIFORNIA BUILDING ENERGY CODE COMPLIANCE CBECC RES PUBLIC DOMAIN SOFTWARE Computer Performance Compliance with the 2013 California Building Energy Efficiency Standards MAY 2014 CALIFORNIA ENERGY COMMISSION Dee Anne Ross Primary Author Martha Brook Project Manager Eurlyne Geisler Office Manager Building Standards Office David Ashuckian Deputy Director Efficiency Division Robert P Oglesby Executive Director ACKNOWLEDGMENTS The Building Energy Efficiency Standards standards were first adopted and put into effect in 1978 and have been updated periodically in the intervening years The standards are a unique California asset and have benefitted from the conscientious involvement and enduring commitment to the public good of many persons and organizations along the way The 2013 standards development and adoption process continued that long standing practice of maintaining the standards with technical rigor challenging but achievable design and construction practices public engagement and full consideration of the views of stakeholders The revisions in the 2013 standards were conceptualized evaluated and justified through the excellent work of Energy Commission staff and consultants This document was created with the assistance of Energy Commission staff including Martha Brook PE Doug Herr Jeff Miller PE Dee Anne Ross and Danny Tam O
50. Central Heat Cool System see Section 8 1 1 2 Fixed Flow for the Cooling Vent drop down menu It is also necessary that the Cool Vent tab at the project level be set to CFI see Section 4 7 1 1 8 23 CBECC User Manual Mechanical Systems Figure 8 15 Cooling Ventilation Cooling Ventilation Fan Data Currently Active Fan Big fan z Name Big fan M Use all fan system defaults Cooling Vent CFM 10 000 0 CFM W CFM Cooling Vent 0 100 WWiCFM 8 7 1 1 Name User defined name which must also be specified in Section 4 7 8 7 1 2 Use all fan system defaults Sets the default minimum to 2 CFM fe 8 7 1 3 Cooling Vent CFM If system default is not checked enter the actual CFM of the proposed ventilation fan 8 7 1 4 W CFM Cooling Vent Enter the Watts CFM of the proposed system 8 24 CBECC User Manual Domestic Hot Water Chapter 9 Domestic Hot Water DHW The water heating system is defined at the zone level see Section 5 4 1 11 while the details of the systems are contained under the mechanical tab The information in this chapter is from the point of view of the mechanical tab 9 1 Efficiency Information Water heaters are required to be certified to the Energy Commission and the applicable efficiency values needed for modeling are found in the on line certified appliance directory http www appliances energy ca gov From this site an advanced search yields the most useful information which can be ex
51. Insulation cceccceceeeeeeeeeeeeeeeceeeeeceaeeeseaeeseeeeseeeeesaeeeeaeeeeneeees 6 3 6 4 3 Advanced Wall Framing EE 6 3 6 5 Attic Roof Terminology iiaeie e i e e eR ea haraa 6 3 6 5 1 e 6 3 6 5 2 Cathedral ei TE 6 3 6 5 3 Ceiling Below Attics rns eeni dete einen eee i adel ahi Wen ee 6 4 6 5 4 Knee Wal cate tein hated eet i ie ie ave een Lee ee eee 6 4 6 5 5 Low Slope Boot ageet eiert Sek iis bade a eh 6 4 6 5 6 Radiant EEN 6 4 6 5 7 O ee EE DEER 6 4 6 5 8 steep Slope Roof aiii a 6 5 6 6 leen e Le EE 6 5 6 6 1 Attic Construction KE DEE 6 5 6 6 2 Construction Layers omisiones 6 6 6 7 Ceiling Below Attic and Interior Ceilings oooooonnicnnnnnnnnnconnnonnnannccanncccnnrccn arrancan 6 7 6 7 1 Ceiling Below Attic Construction Data 6 7 6 7 2 Construction ayers ai A A ee A A dd da 6 8 6 7 3 Cathedral Ceiling Construction Data 6 10 6 7 4 Construction Layers t4 seca A teint A A ee 6 11 6 7 5 Cathedral Ceiling Data 6 11 6 8 Kare L E E totalidad 6 12 6 8 1 Interior and Exterior Wall Construction Data 6 13 6 8 2 Framed Wall Construction Layers inside to outside ooooonncccncccnonnconocononacccanccnnnnnnanacnnancncnno 6 13 6 8 3 Mass or Other Unframed Walls ooocicccnnnininncinnnnccnnnccnonannnarnnn nc c cnc narrar 6 14 6 8 4 Structurally Insulated Panels Gilet 6 15 6 8 5 Demising and Interior Walls cccceceecceeeeeeeceeeeeeeeeeeeseneeeeeeneeseeseneeseeneneeeeenenaeseenenaeeennenees 6 15 6 8 6 Garage E
52. Manual Additions and Alterations 10 5 Addition Alteration Model any components that will be altered with the surface status altered and the new characteristics You will only specify the existing characteristics if the existing conditions were verified by a HERS rater see Figure 10 4 and Figure 10 5 The verified check box opens additional fields to define the existing conditions and affect the standard design see Section 10 1 If one component is verified all components must be verified Since only one surface status can be used separately model components that are being altered from those that will not be altered NOTE Deleted or removed surfaces are not modeled Figure 10 4 Altered with Verified Existing Conditions Window Data Window Overhang Window Fins Currently Active Window Bedri y Window Name Bedrl Belongs to Exterior Wall Back Wall El Surface Status Altered v Je Verify Existing Window Window Type New Oper El Specification Method Overall Window Area E E ALTERED EXISTING Window Area 40 0 f2 Window Area 40 0 2 NFRC U factor 0 300 Btuh ft2 F NFRC U factor 1 280 Btuh ft2 F Solar Ht Gain Coef 0 180 Solar Ht Gain Coet 0 800 Exterior Shade Insect Screen default v Exterior Shade Insect Screen default v 10 4 CBECC User Manual Additions and Alterations Figure 10 5 Altered Without Verified Existing Conditions Window Data Window Overhang Window Fin
53. NG SYSTEMS Efficiency System Type EER SEER HERS Verification Cooling Min SplitAirCond Split air conditioning system Cooling Min hers cool HVAC COOLING HERS VERIFICATION RL E Verified Refrigerant Verified Airflow Airflow Target Verified EER Verified SEER Charge HVAC DISTRIBUTION SYSTEMS pa gt qree gt o E E 087 E 6 Supply Duct Type Duct Leakage Insulation R value Location Bypass Duct HERS Verification Attic Default DES Bee Sealed and tested o e E None Attic Default hers dist HVAC DISTRIBUTION HERS VERIFICATION A Y AA e e E O Verified Duct Design Duct Leakage Verification Duct Leakage Target Verified Duct Location Return Supply HVAC FAN SYSTEMS Registration Number Registration Date Time HERS Provider CA Building Energy Efficiency Standards 2013 Residential Compliance Report Version CF1R 04142014 574 Report Generated at 5 7 2014 11 49 18 AM CERTIFICATE OF COMPLIANCE RESIDENTIAL PERFORMANCE COMPLIANCE METHOD CF1R PRF 01 Calculation Date Time 11 47 Wed May 07 Project Name 1 Story Example 2014 Calculation Description 1 Story Example Rev 12 Input File Name Exampl12 ribd Page 8 of 9 HVAC FAN SYSTEMS HERS VERIFICATION Name Cooling Vent CFM Cooling Vent Watts CFM Number of Fans HERS Verification Registration Number Registration Date Time HERS Provider CA Building Energy Efficiency Standards 2013 Residential Compliance Report Version CF1R 04142014 574 Report Ge
54. R PRF 01 Calculation Date Time 11 47 Wed May 07 Project Name 1 Story Example 2014 Page 3 of 9 Calculation Description 1 Story Example Rev 12 Input File Name Exampl12 ribd A A a o E DEE A ne neon asma orenen Grane area window seg Tear O rue ps rem a po mw ow gt e RER a ap a gt e ICE ARANA INE IRC ARE IRC rra pm e gt cating bolowatigT __ ____ondioned ER ER INTI IEA IE Gariorouse Font INMINENTE LR Gartorouse et GonetonoassGarage came LR BR ZO ERAN ICI ara e Se e ep ESCRS a Js a pr pp 2 gt a Oe Trono a gt Height We a Type Surface Orientation Azimuth ft Area ft Exterior 3 window Frontier so woo 1 500 os 025 See ee ee O ir A tete par peo pe poseo pose poes CECR EA IC fom E IE E EE LA VEA A A a Ar ap apar pa gt o ATI CA O EC EC II IEC IC Registration Number Registration Date Time HERS Provider CA Building Energy Efficiency Standards 2013 Residential Compliance Report Version CF1R 04142014 574 Report Generated at 5 7 2014 11 49 18 AM CERTIFICATE OF COMPLIANCE RESIDENTIAL PERFORMANCE COMPLIANCE METHOD CF1R PRF 01 Calculation Date Time 11 47 Wed May 07 Project Name 1 Story Example 2014 Page 4 of 9 Calculation Description 1 Story Example Rev 12 Input File Name Exampl12 ribd SSC AE A EE te tg OVERHANGS AND FINS e La eee Left Fin MES RE SNE EE Lett C ae oe oan E E T EE EE Jo E a e A MESA rh BECA EE EA E a a TAN ESO O
55. RA4 1 6 CBECC User Manual Chapter 2 Getting Started 2 1 Installing CBECC Res Click on the hyperlink for CBECC Res or copy the link into your browser s address box Follow the prompts and read accept the license agreement You can direct the software to a different drive but do not change the names of the file folders The software will create a desktop icon Figure 2 1 Setup PA CBECC Res 2013 Setup a Choose Components Choose which features of CBECC Res 2013 you want to install A g Check the components you want to install and uncheck the components you don t want to install Click Next to continue Select the type of install Or select the optional components you wish to install Space required 129 8MB Typical amp Install For ol C all Users Just Me CBECC Res 2013 1c Components CBECC Res 2013 E Desktop Shortcut P Zen e Description 2 2 Menu Bar The menu bar at the top of the screen see Figure 2 1 allows you to access many of the program s features Figure 2 2 Menu and Tool Bar Fie Edit Ruleset C1 ce E View Tools Help aj sjaja 2 Getting Started CBECC User Manual Getting Started 2 2 1 File The file menu contains the standard functions for file management opening and saving files save as to rename a file and exiting the program 2 2 2 Edit In addition to the standard cut copy and paste commands
56. S ET EE EEN E BE 2 WEE A e EE E E A A ES IEA eae ESE gt SN O TA CN A O A A EC E PA AAA ESAS SAA A re Os EC A EA AA e EE ae ae NS EE Registration Number Registration Date Time HERS Provider CA Building Energy Efficiency Standards 2013 Residential Compliance Report Version CF1R 04142014 574 Report Generated at 5 7 2014 11 49 18 AM CERTIFICATE OF COMPLIANCE RESIDENTIAL PERFORMANCE COMPLIANCE METHOD Project Name 1 Story Example Calculation Description 1 Story Example Rev 12 OPAQUE SURFACE CONSTRUCTIONS RO ClgBlwAttic Cons Gar House R15 Tile RB Roof Ceilings below attic Interior Walls Attic Roofs R38 Ceiling below attic Ceilings below attic R15 R4 Stucco Wall Exterior Walls Garage Ext Wall Exterior Walls OPAQUE SURFACES Cathedral Ceilings Registration Number Wood Framed Ceiling Wood Framed Wall Wood Framed Ceiling Wood Framed Ceiling Wood Framed Wall Wood Framed Wall CA Building Energy Efficiency Standards 2013 Residential Compliance SEH Date Time 11 47 Wed May 07 Input File Name Exampl12 ribd 2x4 Bottom Chord of Truss 24 in O C 2x4 16 in O C 2x4 O 24 In OC 2x4 Bottom Chord of Truss 24 in O C 2x4 O 16 in O C no insulation 2x4 O 16 in O C vertical Roof Risee x in 12 Registration Date Time Report Version CF1R 04142014 574 Roof Pitch CF1R PRF 01 Page 5 of 9 Attic Floor no attic floor Cavit
57. Uninsulated Exterior Wall Construction Data Currently Active Construction Garage Ext Wall X Frame R 5 051 Construction Name Garage Ext Wall Cavity R 1 480 Can Assign To Exterior Walls x Fm Fetr 0 250 Construction Type Wood Framed Wall z Construction Layers inside to outside Cavity Path Frame Path Inside Finish Gypsum Board v Gypsum Board z Sheathing Insulation no sheathing insul v no sheathing insul z Cavity Frame L no insulation y 2x4 16 in OC gt Sheathing Insulation no sheathing insul v no sheathing insul x Exterior Finish 3 Coat Stucco v 3 Coat Stucco M Non Standard Spray Foam in Cavity 6 9 Floors Raised floor types that can be created include wood framed steel framed and SIPs over a crawl space with a crawl space zone associated with the building over exterior no crawl space or 6 16 CBECC User Manual Construction Assemblies interior floor which includes a floor over garage although actually a demising surface See Figure 6 11 through Figure 6 13 Figure 6 11 Floor over crawl space Construction Data Currently Active Construction T24 2013 R19 FlrOvrCrawl Cons Construction Name 124 2013 R19 FlrOvrCrawl Cc Can Assign To Floors Over Crawlspace v Construction Type Wood Framed Floor y Construction Layers topmost to bottom Cavity Path Frame Path Floor Surface Carpeted x Carpeted y Co
58. User Manual Building Envelope 7 6 1 7 Surface Default 20 exposed 80 covered otherwise specify exposed or covered slab modeled separately Covered slab includes carpet cabinets and walls No building has 100 exposed slab 7 6 1 8 Slab Has Edge Insulation Check box to indicate that the slab edge will be insulated 7 6 1 9 R value amp Depth When slab edge insulation is indicated in the check box the R value and depth of the proposed slab edge insulation is identified Depth of insulation installed vertically is specified in inches Depth of insulation installed horizontally is specified in feet 7 7 Exterior Garage Surfaces In addition to the surfaces separating the house from the garage which continue to be modeled as part of the conditioned zone model attached unconditioned spaces see Figure 7 18 No surface is modeled more than once so if the garage ceiling is a floor in the conditioned space zone it is not modeled in the garage zone The garage surfaces are typically not insulated and it is not necessary to model any windows Model the area and type of ceiling slab floor perimeter length is only to exterior any walls typically with R 0 insulation and the large metal roll up or wood door U factor 1 00 and the door to outside In a one story building the attic is typically shared with the conditioned space NOTE this is why the attic area which cannot be edited is bigger than the conditioned space The surfac
59. a source of space conditioning the sleeping and living zones must be separately controlled a non closeable opening between the zones cannot exceed 40 ft each zone must have a temperature sensor and a setback thermostat and the return air for the zone must be located within the zone 4 6 CBECC User Manual Project 4 4 1 9 Has Attached Garage This check box is used to indicate if there is an attached garage which must be modeled While there are no minimum requirements for the garage construction it is modeled to accurately represent the building to be constructed and typically improves compliance due to the buffering effects of an enclosed attached space 4 4 1 10 Dwelling Units In a multi family building the dwelling unit information is identified under this tab see Figure 4 4 For single family dwelling units the characteristics are defined under the Building tab Figure 4 4 Multi Family Dwelling Unit Details Project Analysis Building Dwelling Units Lighting Appliances IAQ Cool Vent Unit Type s Count ft 2 1 Bdrms 765592 j2 6 2Bdrms e9sf2 3 ss E21 B me 655 12 ch Ip 2 Bdrms 895 2 Dwelling Unit 1 Data 2 oH Unit istFlrOneBR Count 2 Zone amp Area Unit Conditioned Z 780 f2 Bedrooms Si EE Located in Zone Iw Conditioned y Usage default 669 kWhiyr vi E69 kWhiyr E Conditioned gt usage from bedrooms
60. above deck insulation is shown as part of the attic details model the R1 to R860 insulation 6 7 4 3 Roof Deck The default is wood siding sheathing decking 6 7 4 4 Cavity Frame List the compressed R value of cavity insulation see Section 6 1 in the cavity column The framing column is to indicate the size of the framing and the spacing e g 2x12 with 24 inch on center framing Also included is an option for a 2x4 bottom chord of truss at 24 inches on center 6 7 4 5 Sheathing Insulation List the sheathing or insulation layer Options are none gypsum board wood sheathing and R1 to R860 insulation 6 7 4 6 Inside Finish This is the inside finish if any of the roof A layer of gypsum is typically included 6 7 4 7 Non Standard Spray Foam in Cavity This check box identifies additional documentation and HERS verification requirements due a claimed R value that exceeds the default assumption of R 5 8 per inch for closed cell and R 3 6 per inch for open cell see Section 6 4 6 7 5 Cathedral Ceiling Data Once you have an assembly to match your building and select lt OK gt the screen shown in Figure 6 7 appears allowing you to complete the data for the roof assembly Each surface facing a different orientation is modeled as a separate surface 6 7 5 1 Ceiling Area The area of the ceiling in square feet that meets all the same specified criteria If parts of the roof face different orientations they must be modeled separate
61. aluating ProposedModelCodeAdditions rules User aborted analysis via progress dialog Cancel button Error evaluating ProposedInput rules Error performing range and or error checks on building model Error evaluating CSE_SimulationCleanUp rules Error generating model report Error evaluating ProcessResults rules Error evaluating ProposedCompliance rules Error s encountered reading building model project file Error s encountered evaluating rules required analysis to abort Unable to write compliance report file pdf or xml Error s encountered generating compliance report file pdf or xml Error setting up check of weather file hash Error evaluating CheckFileHash rules Weather file hash failed consistency check 2 9 CBECC User Manual Tutorial Chapter 3 Tutorial Note This tutorial is specific to CBECC Res 2013 version 2 3 1 Sample Files This is a step by step tutorial for modeling a simple single family residence in CBECC Res 2013 1f Although this tutorial will begin with a blank project it is helpful to note that in the CBECC Res Projects directory are several sample input files including 1 1StoryExample13 ribd Based on the Energy Commission s 2100 ft single floor prototype with slab on grade floors a tile roof an attached garage window dimension inputs overhangs with the garage modeled as a fin providing shading to windows 2 1StoryExample13Crawl ribd Same as above with a crawl space 3 2Stor
62. alysis Building Dwelling Units Lighting Appliances ap Cool Vent Run Title Ellis Addition Remodel Analysis Type Proposed and Standard Generate Report s M PDF J Full XML Standards Yer Compliance 2015 Sa any time with 2015 Federal Air Conditioning Requirements and solar credit PY System Credit Rated Power kWde as Run Scope Addition and or Alteration Ki 10 2 Setting the Standard Design The standard design against which alterations are compared will depend on whether 1 the existing conditions were verified by a HERS rater prior to creating the building model and 2 the proposed alteration meets or exceeds a minimum efficiency threshold which may be mandatory or prescriptive 10 2 1 Third Party Verification The standard design energy budget is not based on the vintage of the building Instead existing conditions are either set to actual conditions verified by a HERS Rater or default conditions for alterations meeting prescriptive requirements see Building Energy Efficiency Standards Section 150 2 Table 150 2 B 10 1 CBECC User Manual Additions and Alterations For example if windows that are single pane metal frame with clear glass are replaced with dual pane wood frame Low E windows the standard design without verification is based on the existing windows having a 0 40 U factor and 0 35 SHGC or 0 66 in zones with no SHGC requirement If verified by a HERS rater
63. an set up a file template for projects that have a library of assemblies and equipment common to your projects For example R 30 cathedral ceilings R 30 and R 38 ceilings below attic tile roofs and asphalt comp roofs with or without radiant barriers typical 2x4 and 2x6 wall construction assemblies furnaces with 80 and 92 AFUE and various water heater types and efficiencies typical for your clients 4 1 Tool Tips Automated Features e Tool Tips Some fields have tool tips that are activated by hovering over the field e File Save If a file was not saved before you choose to perform an analysis you are prompted to save it before running If you select the default save the file will be saved over the existing file Thus if your intention is to create a new version of the file be sure to pick lt cancel gt and select lt file gt and lt save as gt from the file menu e Cooling Efficiencies When minimum cooling equipment efficiencies are specified these will be updated to the new minimum efficiencies when you switch from 2014 analysis to 2015 see Section 4 3 1 4 e Duct R value When the defaults for ducts are used if you change the climate zone and the new zone has a different Package A basis the minimum will be updated e g zone 12 is based on R 6 while zone 11 is based on R 8 e Automated Defaults Based on Climate Zone When a field such as duct R value window U factor or SHGC is blue rather than red the value will up
64. art Guide See Appendix B for a sample of the CF1R The Energy Commission no longer produces a Mandatory Measures MF 1R form Mandatory measures documentation is found on the installation certificates CF2R You can see a list of forms in Appendix A of the 2013 Residential Manual and you can access print forms at the Energy Commission s web site http www energy ca gov title24 2013standards 1 8 Registered CF1R When compliance requires HERS verification some of which are mandatory requirements the compliance documents must be registered with a HERS provider before applying for a building permit see Residential Compliance Manual Section 2 1 1 The primary document which is produced by CBECC Res is the Certificate of Compliance CF1R Additionally as construction progresses follow up documentation certificates of installation CF2R and certificates of verification CF3R are required to confirm that the required measures are installed The file needed to upload a project to a HERS provider is created only when you check the box labeled Full XML on the Analysis tab When uploading to the HERS provider the file is found in the projects folder and is entitled filename AnalysisResults BEES xml found in a location such as My Documents CBECC Res 2013 Projects folder 1 9 Special Features and Modeling Assumptions The 2013 Residential ACM Reference Manual identifies the features that are to be shown as a Sp
65. at conforms to the specification given in Table 150 0 C or D However if a value less than 0 58 Watts CFM is modeled for compliance credit the fan efficacy value must be verified and the alternative is not allowed If no cooling system is installed this value is assumed to be 0 58 W CFM 8 6 Indoor Air Quality IAQ Fan Data IAQ Fan Data Currently Active Fan ag Fan 1 7 Figure 8 14 IAQ Fan Data Name IAQ Fan 1 IAQ CFM IAQ Fan Type IAQ Recovery Effectiveness 70 00 60 0 CFM Wi CFM IAQ Vent 1 200 WICFM Balanced Z 8 22 CBECC User Manual Mechanical Systems Mechanical ventilation is required to meet minimum indoor air quality IAQ requirements of ASHRAE Standard 62 2 see Residential Compliance Manual Section 4 6 The IAQ system requires HERS verification meeting Reference Appendices Residential Appendix RA3 3 The simplest IAQ fan system is an exhaust fan such as a bathroom fan that meets the criteria in ASHRAE Standard 62 2 for air delivery and low noise and that operates continuously More advanced IAQ fan systems have a supply or both supply and exhaust fans In most cases the energy impact of this mandatory requirement is neutral The only system for which credit can accrue is a central fan integrated system with HERS verified W CFM of less than 0 58 8 6 1 1 Name User defined name must be the same name as specified in Section 4 6 8 6 1 2 IAQ CFM Enter the size of fan being instal
66. ated input see Section 9 2 Water Heater Types 9 7 CBECC User Manual Domestic Hot Water 9 6 1 4 Efficiency Certified efficiency from one of the sources listed in Section 9 1 Based on the tank type the efficiency is energy factor for small storage small instantaneous and small heat pump water heaters For large storage large instantaneous large heat pump or boilers the efficiency is thermal efficiency recovery efficiency or AFUE Indirect water heater efficiency is based on the type of device being used to heat the water Value entered as a decimal such as 0 60 or 0 80 9 6 1 5 Standby Loss Fraction Required input for large storage water heaters and mini tanks For large storage a standby loss of 3 is entered as 0 03 For mini tanks enter the standby loss Watts Find the standby loss by conducting an advanced search in the Energy Commission s appliance efficiency database of water heating equipment see Section 9 1 Some large storage water heaters are not required to report standby loss This value can be calculated using equations from the 2012 Appliance Efficiency Regulations Tables F2 and F3 as follows Standby loss Btu hr rated input 800 110 x volume x 0 5 Convert to Standby Loss Percent as Standby loss Btu hr 8 25 x Volume x 70 9 6 1 6 Tank Volume Enter the tank volume in gallons The rated input rather than the tank volume is used to determine if a tank type is large or small s
67. ating ventilating and air conditioning HVAC system by picking a defined system or creating a new system The system is made up of the heating cooling and distribution systems and a furnace fan See more in Chapter 8 Mechanical Systems In a multi family building each floor must have at least one HVAC system if the system Characteristics are the same use the copy paste feature 5 4 1 11 DHW System 1 Identify the name of the domestic water heating DHW system by picking a defined system or creating a new system See more in Chapter 9 Domestic Hot Water 5 4 1 12 DHW System 2 Identify a second DHW system or none 5 5 Garage An attached unconditioned space is modeled as a separate unconditioned zone When the project was defined as having an attached garage the software created an unconditioned zone see Figure 5 5 The buffering effect of this zone is modeled to accurately represent the building The walls between the house and garage are modeled as part of the conditioned space as an interior wall For details on modeling the walls ceiling slab floor and garage door see Chapter 6 Construction Assemblies and Chapter 7 Building Envelope When a multi family building is modeled as having an attached garage the software creates only one unconditioned garage zone To represent a garage attached to each unit increase the size of the single garage zone to have the area and all the surfaces of all the garages combined 5 5 1 1 Pa
68. be used for the window name Each window on a given surface must have a unique name 7 3 1 2 Belongs to Exterior Wall Defaults to the wall on which the window was created When copying window data to another zone the program changes this to the new exterior wall 7 3 1 3 Surface Status Select new altered or existing 7 3 1 4 Window Type If using a window type from the library you created select from the valid options This field can also be left as none 7 3 1 5 Specification Method Select either Window Dimensions required for fins and overhangs or Overall Window Area 7 3 1 6 Model Window Fins and or Overhangs Check box is available only when Section 7 3 1 4 is set to window dimensions 7 3 1 7 Window Area If using the overall window area enter the area of a window in square feet and the multiplier For example if there are three 3 5 windows enter window area 15 ft and multiplier 3 7 3 1 8 Width If using the window dimensions method enter the window width in feet 7 8 CBECC User Manual Building Envelope 7 3 1 9 Height If using the window dimensions method enter the window height in feet 7 3 1 10 Multiplier The number of identical windows NOTE must also have identical overhang and fin conditions if modeled 7 3 1 11 NFRC U factor U factor from National Fenestration Rating Council NFRC for the window product not the center of glass value www nfrc org Alternatively en
69. be rejected by the building department Sign up for e mail notifications at http www energy ca gov efficiency listservers html 1 4 Software Capabilities Chapter 7 of this User Manual describes whatfeatures of the opaque envelope maybe medeled and how they are modeled Chapter 8 addresses the same for mechanical systems and Chapter 9 covers water heating systems Chapter 10 discusses addition and alteration modeling For a complete discussion of how the standard design is established see the 2013 Residential ACM Reference Manual 1 5 Fixed and Restricted Inputs When the specified analysis type is compliance fixed and restricted inputs cannot be changed by the user Since sample files may include assumptions that are not standard in a given climate zone to determine the standard assumption for a given input consult either Section 150 1 Package A of the Building Energy Efficiency Standards or the 2013 Residential ACM Reference Manual 1 6 Preparing Basic Input The software includes several sample files and the user manual provides a tutorial as well as a guide through program inputs Required inputs include Building address climate zone front orientation and availability of natural gas Conditioned floor area and average ceiling height Attic roof details roof pitch roofing material solar reflectance and emittance Ceilings below attic and vaulted ceiling R values Wall areas orientation and construction details
70. ce based residential provisions of the 2013 Building Energy Efficiency Standards California Code of Regulations Title 24 Parts 1 and 6 and WHEREAS the Energy Commission subsequently approved revisions to CBECC Res and revoked approval of previous versions under California Code of Regulations Title 24 Part 1 Chapter 10 sections 10 109 and 10 110 and WHEREAS CBECC Res has been further revised as reflected in Version 2 to incorporate additional programming for additional envelope assemblies and heating ventilating and air conditioning systems and WHEREAS as described in the CBECC Res 2 Summary of Residential ACM Tests presented to the Energy Commission along with this Resolution staff of the Energy Commission has reviewed and tested CBECC Res Version 2 to ensure it meets the requirements specifications and criteria for building energy models set forth in the Residential Alternative Calculation Method Approval Manual CEC 400 2012 007 CMF REV April 2014 THEREFORE the Energy Commission approves CBECC Res Version 2 for estimating energy consumed by residential buildings under Public Resources Code section 25402 1 subdivision a and for demonstrating compliance with the performance based residential provisions of the 2013 Building Energy Efficiency Standards California Code of Regulations Title 24 Parts 1 and 6 and THEREFORE the Energy Commission rescinds its approval of previous versions of CBECC Res for estimatin
71. ce cooling loads and save energy The simplest approach is a whole house fan which is the basis of the standard design in climate zones 8 14 where the evenings may cool down enough to be an effective means of cooling the house The types of cooling ventilation are shown in Table 4 2 Additional inputs are discussed in Section 8 7 4 7 1 1 Cooling Ventilation Default value is none Other options are a default prescriptive whole house fan will set to exactly 2 CFM ft specify individual fans or a central fan integrated system which uses the space conditioning duct system to provide outside air for cooling additional inputs are discussed in Chapter 8 Whole house fan operation requires that the building have an attic Table 4 2 Ventilation Cooling Fans Measure Description Whole House Fan Traditional whole house fan is mounted in the ceiling to exhaust air from the house to the attic inducing outside air in through open windows Whole house fans are assumed to operate between dawn and 11 PM only at 25 of rated CFM to reflect manual operation of fan and windows by occupant Fans must be listed in the California Energy Commission s Whole House Fan directory If multiple fans are used enter the total CFM CFI Central Fan These systems use the furnace or air handler fan to deliver outdoor air to Integrated cool vent conditioned space With an automated damper outside air duct temperature sensors and controls these systems can au
72. cent zone being unconditioned 7 15 CBECC User Manual Building Envelope Figure 7 16 Exterior Floor Exterior Floor Data Currently Active Floor Over Patio h Exterior Floor Name Over Patio Belongs to Zone Conditioned ha Surface Status New v Floor Type Raised Light Floor pi Construction Ext Floor R19 Si Floor rea 100 f2 Floor Elevation 10 7 ft 7 5 3 1 Exterior Floor Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 7 5 3 2 Belongs to Zone Select any appropriate zone already included in the building model When copying components of one zone to another this field automatically changes 7 5 3 3 Surface Status Select New Existing or Altered 7 5 3 4 Floor Type Raised light floor or other floor type available from the drop down menu 7 5 3 5 Construction Raised floor over exterior If an appropriate construction assembly is not available right click and pick create discussed in depth in Chapter 6 Construction Assemblies 7 5 3 6 Floor Area Area of the floor in square feet 7 5 3 7 Floor Elevation Height above grade or depth of crawl space in feet For multi story buildings modeled as multiple zones this value must be consistent with the value input for bottom in zone data see Figure 7 15 7 16 CBECC User Manual Building Envelope 7 6 Slab Floor Slab
73. center framing or advanced wall framing AWF see Section 6 4 3 6 8 2 4 Sheathing Insulation List the sheathing or insulation layer on the outside of the framing Do not enter 1 coat stucco here Options are none gypsum board wood sheathing and R 1to R12 60 insulation 6 8 2 5 Exterior Finish Exterior finish options are wood siding 3 coat stucco or R4 synthetic stucco also known as 1 coat stucco 6 8 2 6 Non Standard Spray Foam in Cavity This check box identifies that additional documentation and HERS verification requirements apply because the claimed R value exceeds the default assumption of R 5 8 per inch for closed cell and R 3 6 per inch for open cell see Section 6 4 6 8 3 Mass or Other Unframed Walls 6 8 3 1 Inside Finish Default value gypsum board 6 8 3 2 Insulation Furring List the insulation installed if the walls are furred on the inside Select the thickness and type of furring which is 0 5 inch to 5 5 inch thick wood or metal 6 8 3 3 Mass Layer List the material which varies based on the construction type and includes concrete brick light weight LW medium weight MW or normal weight NW concrete masonry units CMU with solid grout insulated cores or empty cores Select the thickness 6 8 3 4 Insulation Furring List the insulation installed if the walls are furred on the outside Select the thickness and type of furring which is 0 5 inch to 5 5 inch thick wood or metal
74. ctance Default Emittance Built Up Roofs Size 6 8 confirming to 0 50 0 48 0 85 ASTM D448 and D1863 Ballasted Roofs Size 2 4 confirming to 0 45 0 40 0 85 ASTM D448 5 3 Crawl Space The software automatically creates a crawl space zone when a floor over crawl space is defined The floor characteristics are more fully discussed in Chapter 6 Construction Assemblies The crawl space zone see Figure 5 3 is created using the area specified for the raised floor above the crawl space and the floor elevation to set the area and height of the crawl space 5 4 CBECC User Manual Zones Figure 5 3 Crawl Space Zone Envelope Mechanical Crawl Space Data E Project 1 Story Example BB Attic 2 540 SqFt Crawl Space Name Crawl Space Area 2 100 2 E Conditioned 2 100 12 Ceiling below Crawl Space Type Normal vented Front BB Left Crawl Perimeter 162 f EM Back f BB Right Crawl Height 2 ft E GarToHouse A 5 GarToHouse U fa Floor Over Cra 5 HVAC Syster bic Min Gas ff Garage 440 SqFt Crawl Space 2 100 Construction Asse 5 3 1 Crawl Space Zone Data 5 3 1 1 Crawl Space Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 5 3 1 2 Crawl Space Type The default type is a vented crawl space The three available types are 1 normal vented crawl space has a co
75. currently not available e Topic Help Accesses help information applicable to the selected component feature currently not available e Restore Default Returns the value of the field to its default value if applicable e Critical Default Comment Opens a dialog enabling you to enter a justification for overriding values designated by the standards as critical defaults i e a value that should only be overridden with special justification feature currently not available 2 5 1 Analysis Types Proposed Only Simulates the proposed building s energy use using the 2013 compliance rules without establishing the standard design Proposed and Standard In addition to simulating the proposed design simulates the standard design building one that complies with the 2013 prescriptive standards to establish the energy budget for compliance Research Not yet implemented Simulates the building input by the user but does not apply the 2013 compliance rules 2 5 2 Building Tree Controls Parent Child Relationships In order to analyze a building s energy use it is necessary to track relationships among building components CBECC Res displays these relationships using the familiar tree control found in Windows Explorer and many other applications For example under the envelope tab exterior walls are shown as parents to windows Windows are connected to exterior walls and appear under walls as children to spaces The tree control
76. d A default assumption of at least 34 Btu hour per square foot of conditioned floor area can be used to determine an appropriate efficiency For the distribution system model either none or a distribution systems without ducts as specified in Section 8 4 1 2 For systems rated with a Coefficient of Performance COP only convert the COP to a Heating Seasonal Performance Factor HSPF using Equation 8 1 above 8 3 Cooling Systems The cooling system is the equipment that supplies cooled air to an HVAC System see Figure 8 7 Cooling systems are categorized according to the types shown in Table 8 3 See Table 8 4 for which measures some of which are mandatory require HERS verification 8 12 CBECC User Manual Descriptor Mechanical Systems Table 8 3 Cooling Equipment Cooling Equipment Reference Ductless Split Air Conditioner Split air conditioning outdoor unit that uses refrigerant to transport cooling to at least one terminal in each habitable space in the dwelling unit These include small ductless mini split and multiple split air conditioners and packaged terminal through the wall units Distribution is non ducted Efficiency metric EER Evaporative Direct Direct evaporative cooling systems Assume minimum efficiency air conditioner The default distribution system is ducts in attic Efficiency metric SEER Evaporative Indirect Direct Indirect direct evaporative cooli
77. date based on the default for the selected climate zone If the field is red and you wish to enable this feature swipe the cursor across the field right click and select Restore Default The field will change from red to blue to indicate that it will change if a climate zone with a different standard design assumption is selected To prevent unintended changes on window efficiencies see also Window Types in Section 7 3 1 4 4 1 CBECC User Manual Project 4 2 Project Information Figure 4 1 Project Information Project Analysis Building Dwelling Units Lighting Appliances IAQ Cool Vent Project Name 1 Story Example Building Address 123 Main St City State Sacramento CA Zip Code 95811 Climate Zone cz12 Sacramento x 4 2 1 1 Project Name The project name is user defined project information that will appear as the first piece of general information on the CF1R 4 2 1 2 Building Address Enter a building address APN or legal description to identify the location of the proposed building project 4 2 1 3 City State Enter the city or town in which the proposed building is located 4 2 1 4 Zip Code The zip code is used to establish the correct climate zone 4 2 1 5 Climate Zone Use the zip code and Reference Appendices JA2 1 1 to determine the correct climate zone 4 3 Analysis Figure 4 2 Analysis Information Project Analysis Building Dwelling Units Lighting Appliances
78. des the interaction with the air distribution ducts infiltration exchange between the attic and the house the solar gains on the roof deck and other factors These interactions are illustrated in Figure 5 1 5 2 1 Attic Zone Data The software automatically creates an attic zone once you define a ceiling below an attic as part of the conditioned space or garage see Figure 5 2 5 1 CBECC User Manual Zones Figure 5 1 Attic Model Components Roof Deck Convection amp Radiation A Ceiling Kee Conduction amp Infiltration House Figure 5 2 Attic Zone Data Attic Data Attic Name Attic Area 2540 o Attic Conditioning Ventilated x Roof Rise 5 xin12 Attic Status New X Roof Deck Surface Construction Asphalt RB Roof z Sol Reflectance 0 2 IR Emittance 0 85 5 2 1 1 Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 5 2 1 2 Attic Conditioning The conditioning is either ventilated typical attic or conditioned unvented which is not yet implemented 5 2 1 3 Roof Rise Specify the roof rise or roof pitch which is the number of feet the roof rises in a span of 12 feet shown on elevations as 4 12 or 4 in 12 If there are multiple pitches you can enter the roof rise of the largest area of roof 5 2 CBECC User Manual Zones 5 2 1 4 Area Th
79. e Heating Component 1 Type CntrlFurnace Fuelfired central furnace gt CntriFurnace Gas or oil fired central furnaces propane furnaces or heating equipment considered equivalent to a gas fired central furnace such as wood stoves that qualify for the wood heat exceptional method Gas fan type central furnaces have a minimum AFUE 78 Distribution can be gravity flow or use any of the ducted systems Efficiency Metric AFUE AFUE 78 0 8 2 2 Heat Pumps Air Source See Figure 8 6 for heat pump system data input screen which varies slightly by equipment type 8 2 21 Name User defined name for the system 8 2 2 2 Type Heat pump system type see Table 8 2 8 2 2 3 Heating Performance HSPF Enter the heating seasonal performance Factor HSPF Efficiency information for a specific model number is found by performing an advanced search in the Energy Commission s appliance directories http www appliances energy ca gov or from the AHRI Certified Products Directory http www ahridirectory org For systems rated with a COP only which require an HSPF convert the COP to a Heating Seasenal Performance Factor ASPB using Equation 8 1 Equation 8 1 H SPF 3 2 x COP 2 4 8 2 2 4 Capacity 47 Degrees F Required value from the AHRI Certified Products Directory http www ahridirectory org Capacity is used to determine the energy use of the backup electric resistance heat In a m
80. e HERS Provider CA Building Energy Efficiency Standards 2013 Residential Compliance Report Version CF1R 04142014 574 Report Generated at 5 7 2014 11 49 18 AM
81. e 4 1 Table 4 2 Table 5 1 Table 6 1 Table 6 2 Table 8 1 Table 8 2 Table 8 3 Table 8 4 Table 8 5 Table 8 6 Table 8 7 Table 9 1 Table 9 2 Input Classification Explanaiions conoscan ncccnnrnnn nr 2 7 Ree Ee EE 2 7 PV Credit Calculation Factors ooonnncinncinincccnonnnnnocnnnnrnnnnnccnnnrn naar nn rn rca 4 4 Ventilation erstellen EE 4 9 Solar Reflectance and Emittance for Aggregate Materials oooonniocinnicnncinnnnnnnnncnnncccnnrccnnrrnnnncnnnncn 5 4 Compressed Insulation R Value cccsceceeceeceeeeeeeaeeeeneeceaeeecaaeseeaaesaeeecaaeseeaaesseaeeseeeeesaeeseaaeesnees 6 1 Required Thickness Spray Foam Insulation ccccceccceceeeeeceeeeeeeeeceeeeeeeaeeesaaeseeeeeseeeeseaeeesaeeeeeeeeed 6 2 el Wise ler EE 8 5 Heat F me Ge le EE 8 8 Cooling Equipment iaa iia 8 13 Air Conditioning Measures Requiring HERS Vertftcatton 8 15 Distribution Ae 8 18 Summary of Verified Air Distribution Systems ccceeeceeeeeeeeeeeeeeeeeceeeeecaaeeeeaaeseeeeeseaeeesaeeneneeeeaes 8 19 Buried Duct Effective R Value ooooonnncccnnnnncconnnocccnnnnonccnnnnnrn cnn nn rn cnn nn nnnnannnnrnnrrnnnnrrrrnnnrrrnnnrn 8 21 Water Heater Distribution System Multipliers oooonnnnncccnncnnnnnconnncnnncccnnnccnnnrnnn naar nnnn cnn rnnannnnnnccn 9 3 Default Recirculating Pump Motor Efficiency nan nn cc cano nn cc nana nnccnnnns 9 5 xiij CBECC User Manual Overview Chapter 1 Overview 1 1 Approval for
82. e HVAC SyStemMS aissi nia ri ia aaa aa aa e aa aaa aaa EA TAAS 8 4 8 2 Heating KEE EE 8 4 8 2 1 Heating System Data other than heat pump nn nan c cnn nc cra nn naar nn nncncins 8 5 8 2 2 Heat Pumps AI SOULE i cocido ita eiad da kaadaa andaina ariadna diia 8 6 8 2 3 Air to Water Source Heat Pump narco 8 9 8 2 4 Ground Source Heat PUMP ococccccccccocccononanonoccnancncnnncnn non nan c nro rra 8 10 8 2 5 Hydronic Heating EE 8 11 8 2 6 Hydronic Distribution Systems and Terminals cccccceeesceceeeeeceeeeeaeeeeeeeseeeesaeeeeaeeennees 8 11 vii 8 2 7 Wooa Heating nesie Sia deo e de ee eect Sa eee 8 12 8 2 8 Electric e EEN 8 12 8 2 9 Non centraliHleating EE 8 12 8 3 CONO EE 8 12 8 3 1 Cooling System Data 8 13 8 3 2 No Mee e ET 8 15 8 3 3 Nonscentral COOLING s 00 Aia AAA esis aida 8 15 8 3 4 Evaporative Cooling iii eee i eed asia eves edn a das 8 16 8 4 Distribution System Data 8 16 8 4 2 Low Leakage AlrHandlerS coi is 8 20 8 4 3 Verified Low Leakage Ducts in Conditioned Space oooocinncccincciconccnnonnnnnannnoncncnnrn nano nnnana cnn 8 20 8 4 4 Egeter Leger ege ici ate 8 20 8 5 HVAC Fat System EE 8 21 8 6 Indoor Air Quality IAQ Fan Data 8 22 8 7 AN nnne 8 23 Chapter 9 Domestic Hot Water DH W oooccconinoccconcnoncccocnncccconnnnnncnnnnn ENNEN nr rnnnn rre rre rra nene nnne 9 1 9 1 EffICIONCy TO Malicia carioca AATE N T AREEN rae 9 1 9 2 Water Heater Types A nee tee ate ae 9 1 9 3 Ae ls ue EE 9 2 9 3 1 Si
83. e area is not a user input The area is derived from the combination of ceilings below attic modeled as part of the conditioned and unconditioned zones 5 2 1 5 Attic Status Default is new Other options include altered and existing for Existing Addition Alteration analysis 5 2 1 6 Construction The roof construction is the connection to an assembly that contains the roofing material such as tile or asphalt shingles radiant barrier and other construction details see more in Chapter 6 Construction Assemblies 5 2 1 7 Solar Reflectance The default aged solar reflectance is 0 10 for all roof types The aged solar reflectance for a roof product as published by the Cool Roof Rating Council CRRC www coolroofs org or calculated from the initial value using the equation in 3 7 1 of the 2013 Residential Compliance Manual The aged solar reflectance measures the roofing product s ability to reflect solar heat A higher value is better for warmer climates so if a specific product color is unknown use a lower value among options to avoid having to recalculate compliance during construction If the roof membrane has a mass of at least 25 Ib ft or any roof area that incorporates integrated solar collectors the roof may assume the Package A solar reflectance value see Section 5 2 2 If the roof is a cathedral ceiling or rafter roof the solar reflectance is defined as part of the ceiling see Chapter 7 Building Envelope The roofing
84. e feet in the one dwelling unit type being defined 4 4 2 6 IAQ Indoor Air Quality Ventilation Used to identify that a default minimum IAQ fan is being used or another method of meeting the mandatory ventilation requirement 4 4 2 7 Zone The zone in which the dwelling unit is modeled 4 5 Lighting Appliances The inputs under these tabs are for project types other than energy compliance for new construction 4 6 IAQ Ventilation For single family dwelling units the mandatory indoor air quality IAQ ventilation is specified here The minimum required ventilation rate is provided based on the conditioned floor area and number of bedrooms in the dwelling unit See Section 8 6 for more information on the specific IAQ fan details For more information on this mandatory requirement see Residential Compliance Manual Section 4 6 4 6 1 1 Model as Select method of ventilation as either default minimum IAQ fan or specify individual fans as described in Section 8 6 4 6 1 2 Zone Assign to one of the conditioned zones 4 8 CBECC User Manual Project 4 7 Cooling Ventilation Figure 4 5 Cooling Ventilation Project Analysis Building Dwelling Units Lighting Appliances IAQ Cool Vent Cooling Ventilation Default Prescriptive Whole Hot y Cooling Ventilation 4 200 CFM 2 00 CFM t2 Zone Conditioned S Cooling ventilation systems use fans to bring in outside air to cool the house when this could redu
85. e inputs and a guide to using the software Knowledge of the standards is a pre requisite As the documentation author you are responsible for the content of the compliance documents produced by CBECC Res which are submitted to the enforcement agency as proof of compliance with the standards 1 2 Background The standards allow compliance using either a prescriptive or performance method The prescriptive method is found in the Residential Compliance Manual see Section 1 12 Related Publications for information on obtaining this document Performance compliance uses building modeling software to demonstrate compliance with the standards CBECC Res is the public domain compliance manager meaning it is the simulation and compliance rule implementation software specified by the Energy Commission The document Residential Alternative Calculation Methods ACM Reference Manual see Section 1 12 Related Publications explains how the proposed and standard designs are determined If you have questions about how the software models a building feature refer to this Reference Manual 1 1 CBECC User Manual Overview 1 3 Program Updates For software updates and valid version numbers check link to the the project website accessible from www energy ca gov title24 2013standards 2013 computer prog list html NOTE Be sure to check for updates regularly and or get notifications from the Energy Commission because submittals with outdated software will
86. e is conditioned If the building is designated as meeting the zonal control criteria under the building tab the type is defined as living or sleeping For more information on zonal control see Section 8 1 2 5 4 1 4 Floor Area Specify the floor area and the number of stories in the zone not the building and the average ceiling height 5 4 1 5 Number of Stories The number of stories in the zone If each floor of a 2 story home is modeled as a separate zone the number of stories is 1 for each zone If the home is modeled as a single zone then this value is 2 5 4 1 6 Ceiling Height Average ceiling height in feet 5 4 1 7 Floor to Floor Distance between the floor being modeled and any floor above Default value is average ceiling height plus one foot 5 6 CBECC User Manual Zones 5 4 1 8 Bottom Distance above grade of the surface of the floor in feet Slab floor will be the height from the grade to the top of the slab Raised floor will be the height from grade to the top of the raised floor For multi story buildings where the second or third floors are modeled as a separate zone the bottom must be the total distance from grade to the bottom of the floor e g if the first floor is at 0 7 feet with 9 foot ceilings and 10 feet as the floor to floor height the second floor bottom is 10 7 5 4 1 9 Window Head Height Default value is based on the average ceiling height 5 4 1 10 HVAC System Identify the name of the he
87. ecial Feature and Modeling Assumption on the CF1R 1 10 Field Verification Appendix C of the 2013 Residential ACM Reference Manual identifies the specific measures that require HERS verification or diagnostic testing The CF1R produced by CBECC Res identifies if a 1 3 CBECC User Manual Overview building includes any measures requiring field testing or verification by a HERS rater as part of the compliance results on the first page Additionally as part of the component details any specific measures requiring testing or verification are identified See also Section 1 8 and Section 1 13 7 1 11 Checklist for Compliance Submittal The forms and documentation needed for a compliance submittal includes an electronic version of the CF1R registered with a HERS provider Supporting documentation that may could also be required is the roofing material rating from the Cool Roof Rating Council solar water heating documentation to support a modeled solar fraction AHRI certified efficiency of cooling heating and or water heating equipment NFRC certified U factor and Solar Heat Gain Coefficient for windows and skylights Any supporting documentation requested by the building department to verify modeled features 1 12 Related Publications In addition to this manual users of the software need to have the following documents as a resource during the compliance process e 2013 Building Energy Efficiency Standards P400 2012 004 CMF May
88. ected item on the tree control along with any child components to the clipboard If the copy button is not available from within program dialogs use the keyboard equivalent Ctrl C to copy selected text 2 3 CBECC User Manual Getting Started Paste Contents of Clipboard D This button enables pasting components copied from the tree control to the selected location in the tree control provided that location is compatible with the stored component The Paste button is not available from within program dialogs but you can use the keyboard equivalent Ctrl V to paste text from the Windows clipboard to the selected input field Print This button is inactive in CBECC Res Once a CF1R is produced see Section 1 7 it is printed via Adobe Acrobat print options Perform Analysis This button enables launching a compliance analysis using the currently loaded building description You must save the current building description before performing the analysis Compliance Reports This icon launches the CBECC Res 2013 Report Viewer when there is a report available to view P About CBECC Res 2013 View program license and version information To access the Quick Start Guide Frequently Asked Questions or the User Manual select Help from the file menu 2 4 Main Screen The main screen see Figure 2 3 is used for editing building descriptions There are two folder tabs at the top of the main screen Envelope and Mechanical
89. ed to conditioned space do not model the unconditioned garage 10 2 CBECC User Manual Construction Wall Area Wall Tilt Orientation 10 4 Addition Additions and Alterations Figure 10 2 Existing Surface Exterior Wall Data Currently Active Wall Existing Wall Front Exterior Wall Name Existing Wall Front Belongs to Zone Existing v Surface Status Existing y Wall Existing RO z 320 ft2 90 deg Front v The addition is modeled as a separate zone identified by the Zone Status as new Set the surface status to new for all envelope components in the addition including existing components in a previously unconditioned space inehiding The exception is an existing HVAC system is being extended for the addition see Section 10 4 2 for an explanation of how to model various scenarios It is not necessary to define a DHW system in either the existing or new zone unless one is being altered or added Figure 10 3 Addition HVAC and DHW Zone Data Currently Active Zone Addition Name Addition Zone Status New y Type Conditioned k HVAC Sys Status Existing y Paa 395 D Existing HVAC Sys Existing HVAC System y Stories 1 Ceiling Height Eft gelt Reg DHW Sys 1 Status Existing v Floor to Floor 91 NE Existing DHW Sys 1 none x Bottom 0 7 ft Win Head Height 6 67 ft DHW Sys 2 Status Existing y Existing DHW Sys 2 none z 10 3 CBECC User
90. ee Section 9 2 9 6 1 7 Exterior R value For indirect and unfired tanks 9 6 1 8 Input Rating The input rating consistent with the tank type from one of the listed sources in Section 9 1 9 6 1 9 Ambient Conditions For an indirect water heater specify whether it is installed in unconditioned or conditioned space 9 6 1 10 Recovery Efficiency If the equipment is part of a hydronic system enter the recovery efficiency thermal efficiency or AFUE for appropriate water heating type The value comes from one of the listed sources in Section 9 1 and is entered as a percent e g 78 80 9 8 CBECC User Manual Additions and Alterations Chapter 10 Additions and Alterations CBECC Res can model addition alone alteration alone or existing plus addition alteration For alteration alone the performance compliance approach can only be used if two or more components are altered These components include the building s envelope insulation fenestration space conditioning HVAC equipment duct system water heating system or roofing products Select the run scope on the Analysis tab see Figure 10 1 10 1 Addition Alone To model an addition alone 1 set the run scope to newly constructed 2 check the box for Addition Alone and 3 set the fraction of the dwelling unit that the addition represents for example a 500 ft additon to a 1500 ft house 500 1500 500 0 25 Figure 10 1 Run Scope Project An
91. efault 80 covered 20 exposed The model is now complete You can edit envelope components by right clicking on them and choosing lt edit gt You can add components by right clicking on a parent component and choosing lt create gt and then clicking on a component type By choosing the Mechanical tab at the main screen you can similarly edit components of the mechanical systems To perform an analysis save your input file using the Save shortcut key and the Perform Analysis shortcut key see page 2 3 also accessible under the menu for Tools This will perform the simulation of the current model which takes from 3 5 minutes For comparison Figure 3 2 shows the output screen for the model built in this tutorial You will be able to view the CF1R since we checked the box to create the PDF The PDF is generated using a web based application Figure 3 2 Output for Simple House in Climate Zone 12 Energy Use Details Summary Standard Standard Standard Proposed Proposed Proposed Compliance Design Design Design Design Design Design Margin End Use Site kWh Site therms kTDV ft yr Site kWh Site therms kKTDV t yr KTDVA yr Space Heating 54 62 6 20 74 55 63 9 21 11 0 37 Space Cooling 405 38 91 304 37 04 1 87 IAQ Ventilation 62 2 21 62 2 21 0 00 Other HVAC 0 00 0 00 0 00 Water Heating 145 5 38 85 145 5 38 85 0 00 PY Credit 0 00 0 00 Compliance Total 100 71 99 21 1 50 Inside Lighting 407 15 21 407 15 21 Result Appl amp
92. eg 2 8 2 11 tel EE 2 8 Chapter 3s Tutora A ci ii 3 1 3 1 Sample TEE E E 3 1 3 2 Simple House ExaMpl8 a aa aaa a anaa 3 1 Chapter 4 Breet eege iis et E aida 4 1 4 1 Tool Tips Automated Features 4 1 4 2 Klee e 4 2 4 3 A A ia ie 4 2 4 4 BUIN EE 4 4 4 4 1 Building Bure EE 4 5 4 4 2 Dwelling Unit Details Multi Fam 4 7 4 5 Biere leie uer 4 8 4 6 IAQ Venta EE 4 8 4 7 Cooling Ventilation cimas la ia id acti 4 9 Chapter 5 Zone EEN id 5 1 5 1 Multiple Conditioned ZONES omcicccnncconococnncccnonccnnornnn narran cc 5 1 5 2 MM AAA AA A AAA AAA AAA A 5 1 5 2 1 Aiie zone Dallas is 5 1 5 2 2 Goo Ro iii Aia 5 4 5 2 3 Low Slope Aggregate Roof cesceccecceseeeeeeeeeeeeeeceaeeeeaaeseeaeeseeeeeceaeeeeaaesdeaeeseeeeesaeeesaaeeseneeee 5 4 5 3 EE 5 4 5 3 1 Crawl Space Zone Data 5 5 5 4 Conditioned ZoNe ii A Bin Ghee te A i a di 5 5 5 4 1 Conditioned Zone Dala WAPE 5 6 5 5 Elle EE TEE 5 7 5 5 2 Garage Zone RE 5 8 Chapter 6 Construction Assemblies cccceceeeeeee sees eeeneeeneeeeeeaeee sae seseeeeeeeeeseaesesaaesaseeeeneeeeseaeseseaeenseeeesees 6 1 6 1 EI AE 6 1 6 2 ASSOMDIY TYPOS ua 6 1 6 3 Mandatory Envelope Requirement ccccccceeeeeeeeeeeeeeeeeeeeeeeeeeeaeeeeeeeaeeeseeaaeeesecaaeeeseeaeeeseenaeeeesenaes 6 2 6 4 Spray Foam Insulation SPA ats aan EE 6 2 6 4 1 Medium Density Closed Cell SPF Insulation ecccccceeeeeseeceeeeeceeeeeeaeeeeeeeseeeeesaeeesaeeeeneeees 6 3 6 4 2 Low Density Open Cell SPF
93. elect New Existing or Altered 7 5 2 4 Construction Interior raised floor If an appropriate construction assembly is not available right click and pick create discussed in depth in Chapter 6 Construction Assemblies 7 5 2 5 Outside The outside condition or adjacent zone 7 5 2 6 Different Dwelling Unit on Other Side A checkbox see Figure 7 14 is included when the project is identified as multi family to indicate whether another dwelling unit is on the other side of the surface being modeled 7 5 2 7 Floor Area Area of the floor in square feet 7 5 2 8 Floor Elevation Height above grade or depth of crawl space in feet For multi story buildings modeled as multiple zones this value must be consistent with the value input for bottom in zone data see Figure 7 15 Figure 7 15 Zone Elevation Height Zone Data Currently Active Zone Conditioned 2 2 Name Conditioned 2 Zone Status New Si Type Conditioned EF Floor Area 3 480 f2 HVAC System HVAC System 2 Y Stories 1 Ceiling Height 8 ft Floor to Floor 9f DHW System 1 DHW System 2 Se Bottom 97 ft Win Head Height 6 67 ft DHW System 2 none E 7 5 3 Floor Over Exterior This type of floor is only used when there is no crawl space and no unconditioned space underneath the floor Floors with a garage or unconditioned space underneath are modeled an interior floor with the adja
94. emittance that varies by climate zone and roof slope A low slope roof has a ratio of rise to run or pitch of 2 in 12 or less lt 9 5 degrees from the horizontal In climate zones 13 and 15 a low slope roof is compared to a roof with 0 63 aged solar reflectance and 0 75 emittance A steep slope roof has a ratio of rise to run of greater than 2 12 gt 9 5 degrees from the horizontal In climate zones 10 through 15 a steep slope roof is compared to a roof with 0 20 aged solar reflectance and 0 75 emittance The CF1R reflects that a cool roof is modeled when a reflectance of greater than 0 20 is modeled If a reflectance value greater than 0 10 but less than or equal to 0 20 is modeled the CF1R reflects a special features message that the building contains a non standard roof reflectance 5 2 3 Low Slope Aggregate Roof Although more common in nonresidential applications aggregate is a roofing product made up of stone or gravel material that is used as a finish surface for low sloped roofing A compliance option see Publication CEC 400 2012 018 SF allows for default efficiencies when the material is tested to the initial solar reflectance value shown in Table 5 1 The compliance option allows compliance using the default values for aged solar reflectance and emittance values shown in the table Table 5 1 Solar Reflectance and Emittance for Aggregate Materials Tested Initial Solar Default Aged Solar Aggregate Size Reflectance Refle
95. endices Residential Appendix RA3 6 and 4 4 9 4 1 3 Multi Family Hot Water Distribution Type Drop down menu with options for the level of control on the recirculating system serving the dwelling unit based on the building and water heater type being specified See Section 9 3 2 and Figure 9 2 An input for the recirculation loops is also required see Figure 9 3 9 4 1 4 Recirculation Pump Power bhp Multi family recirculation pump power brakehorse power Typical value less than 1 00 9 4 1 5 Efficiency fraction Multi family recirculation motor efficiency fraction Typical value less than 1 00 See Table 9 2 for default efficiencies 9 4 CBECC User Manual Domestic Hot Water Table 9 2 Default Recirculating Pump Motor Efficiency Nameplate or Brake Standard Fan Motor Horsepower Efficiency 0 050 1 20 0 40 0 083 1 12 0 49 0 125 1 8 0 55 0 167 1 6 0 60 0 250 1 4 0 64 0 333 1 3 0 66 0 500 1 2 0 70 0 750 3 4 0 72 Source Reference Appendices Nonresidential Appendix NA3 9 4 1 6 Water Heater s The name of the water heater which holds more information about the water heater see Section 5 4 1 11 9 4 1 7 Count The number of water heaters named in the adjacent field that are in the system Include different water heaters or different water heater efficiencies on a different line Figure 9 3 Recirculation Loops Water Heating System Data Solar Water Heat
96. enerate compliance during construction See also Section 5 2 1 7 6 7 5 5 IR Emittance The default infrared or thermal emittance or emissivity for all roofing materials is 0 85 Alternatively enter the emittance is the value published by the Cool Roof Rating Council CRRC www coolroofs org See also Section 5 2 1 8 6 8 Walls Wall constructions are accessed by creating a new wall inside the conditioned zone or modifying an existing assembly in the list of Construction Assemblies Walls Figure 6 8 are defined from the inside surface to the outside Interior walls are modeled the same as exterior walls For a description of when a wall is modeled as interior for example demising or walls separating the house from the garage see Section 6 8 5 6 12 CBECC User Manual Construction Assemblies 6 8 1 Interior and Exterior Wall Construction Data 6 8 1 1 Construction Name User defined name 6 8 1 2 Can Assign To This is a fixed field To create a new assembly type at the zone level pick lt create gt and select the appropriate construction assembly type 6 8 1 3 Construction Type Options available include wood framed andsteel framed section 6 8 2 unframed wall types are concrete Insulated Concrete Form ICF brick hollow unit masonry adobe strawbale log section 6 8 3 and structurally insulated panels SIPs section 6 8 4 PEimited duringpregramdevelopment do Hea Figure 6 8 Wood Framed Wa
97. ent for verified refrigerant charge however the standard design in climate zones 2 and 8 15 includes proper refrigerant charge in the standard design for most equipment types see Standards Section 150 1 c 8 8 14 CBECC User Manual Mechanical Systems Table 8 4 Air Conditioning Measures Requiring HERS Verification Measure Description Refrigerant Charge Air cooled air conditioners and air source heat pumps must be diagnostically tested to verify that the system has the correct refrigerant charge Charge Indicator Display A Charge Indicator Display CID alternative to refrigerant charge testing System Airflow Ducted systems require a verified system airflow greater than or equal to 350 CFM ton mandatory requirement or another specified value Air handling Unit Fan To verify that fan efficacy is less than or equal to 0 58 Watts CFM a Efficacy mandatory requirement or other specified criterion EER Credit for higher than minimum EER by installation of specific air conditioner or heat pump models SEER Credit for higher than minimum SEER Evaporatively Cooled Condensers 8 3 1 7 Refrigerant Type Default R410A assumed for all refrigerant containing equipment 8 3 1 8 Multi Speed Compressor Use this field to indicate if the system is a zonally controlled multi speed compressor An exception for single speed compressors would leave this box unchecked and specify 150 CFM ton see Sec
98. er model numbers the EER ratings must be obtained from AHRI directory http www ahridirectory org 8 2 2 8 CFM per Ton The mandatory requirement for cooling airflow is 350 CFM ton for ducted cooling systems also assumed for dwellings with no cooling or 150 CFM ton for Zonal Single Speed systems Users may model a higher airflow All systems other than no cooling require HERS verified system airflow using diagnostic testing procedures from Reference Appendices Residential Appendix RA3 8 2 2 9 AC Charge Verified refrigerant charge Select not verified verified or Charge Indicator Display CID There is no mandatory requirement for verified refrigerant charge however the standard design in climate zones 2 and 8 15 includes proper refrigerant charge in the standard design for most equipment types see Standards Section 150 1 c 8 8 2 2 10 Refrigerant Type Default R410A assumed for all refrigerant containing equipment 8 2 2 11 Multi Speed Compressor Use this field to indicate if the system is a zonally controlled multi speed compressor An exception for single speed compressors would leave this box unchecked and specify 150 CFM ton see Section 8 3 1 5 8 7 CBECC User Manual Mechanical Systems Table 8 2 Heat Pump Equipment Split Heat Pump Split heat pump heating system that has one or more outdoor units supply heat to each habitable space in the dwelling unit Distribution is ducted Efficiency metric HSPF
99. es that separate the house or conditioned zone from the garage are modeled with the conditioned zone as interior walls and interior floors see Sections 6 8 3 and 6 9 3 Figure 7 18 Attached Garage Garage modeled as an unconditioned zone w walls slab roof and metal roll up or wood door 7 18 CBECC User Manual Mechanical Systems Chapter 8 Mechanical Systems The heating cooling duct distribution system and space conditioning fans are defined at the zone level see Section 5 4 1 10 The indoor air quality ventilation and cooling ventilation are defined at the project level see Sections 4 6 and 4 7 The details of these systems are contained under the mechanical tab see Figure 8 1 The information in this chapter is from the point of view of the mechanical tab Figure 8 1 Mechanical Tab Envelope Mechanical Project 1 Story Example E HVAC System 1 Other Heat Cool E Heating Component 1 CntrlFurnace EE Cooling Component 1 SplitAirCond I Air Distribution System 1 DuctsAttic H HVAC Fan 1 Furnace Fan e D I Min Gas Heating Systems E Heating Component 1 CntrlFurnace Cooling Systems E Cooling Component 1 SplitAirCond G Heat Pump Systems Y Distribution Systems I Air Distribution System 1 DuctsAttic HVAC Fan Systems 36 HVAC Fan 1 Furnace Fan o IAQ Fans 3 IAQ Fan 1 Cool Vent Fans H Whole House NOTE Until an exceptio
100. face with the box checked to indicate a different dwelling unit is on the other side of the surface being modeled 4 4 1 6 Number of Bedrooms The number of bedrooms in a building is used to establish mechanical ventilation requirements and to determine if a building qualifies as a compact building for purposes of incentive programs For single family dwellings indicate the number of bedrooms under the building tab and for multi family dwellings under the dwelling unit tab 4 4 1 7 Natural Gas Availability Check the box if natural gas is available at the building site The field does not indicate what fuel type is being used in the building for heating cooling or water heating Whether natural gas is available determines the fuel type used as the basis for time dependent value TDV in the standard design see Reference Appendices Joint Appendix JA3 4 4 1 8 Zonal Control Checking this box enables modeling a building that meets zonal control requirements of the heating system Zonal control credit requires compliance with several eligibility criteria see Residential Compliance Manual Chapter 4 Section 4 5 2 for the complete list The living and sleeping areas are modeled and conditioned separately with either zonally controlled equipment or separate space conditioning equipment and with living and sleeping schedules for the thermostat settings Some of the requirements for this compliance option include each habitable room must have
101. g energy consumed by residential buildings under Public Resources Code section 25402 1 subdivision a and demonstrating performance compliance with the performance based residential provisions of the 2013 Standards for permit applications made on or after July 1 2014 and THEREFORE the Energy Commission directs the Executive Director to take on behalf of the Energy Commission all actions reasonably necessary to implement this resolution including but not limited to a posting information on obtaining CBECC Res version 2 on the Energy Commission s publicly accessible internet web site b ensuring CBECC Res is maintained and revised as necessary to accurately estimate the energy use of residential buildings and demonstrate compliance with the 2013 Building Energy Efficiency Standards for buildings including by i correcting functional and analytical errors and ii incorporating software modules that address additional compliance options approved by the Energy Commission and additional building systems assemblies and construction materials Date April 22 2014 CERTIFICATION The undersigned Secretariat to the Commission does hereby certify that the foregoing is a full true and correct copy of a Resolution duly and regularly approved at a meeting of the California Energy Commission held on April 22 2014 AYE Weisenmiller Douglas Hochschild Scott NAY None ABSENT McAllister ABSTAIN None ce tte dg Harr
102. ge 440 SqFt Gceil OK BM Gwall Front E H GDoor BR Gwall Left BR Gwall Right 7 1 Orientation The orientation of walls windows and any orientation other than front orientation is the plan azimuthorientation or plan view It is the view looking at the plans front left back right or as if standing outside and looking at the front of the building The numeric value for the plan view of walls and windows is the same for every building front is 0 left is 90 back is 180 and right is 270 When defining surfaces use the labels front left back and right and only specify a value when the walls are at an angle such as a bay or corner wall in which case you will specify the orientation relative to the front If there is a bay off the back of a building see Figure 7 2 the back angled walls are entered as 135 and 225 If the bay is off the front the angled walls are at 315 and 45 The software adjusts these for the energy use and as reported on the CF1R based on the front orientation entered for Building Front Orientation and will report the actual azimuth NOTE if you enter the actual orientation of walls the software models the value entered plus the building front orientation and the output will not match the proposed building If you enter the actual orientation of the walls the only way for the output to be correct would be to define the front orientation as 0 and m
103. gure 6 12 Floor over exterior cnn nano E rA E EEEE AENA E Ea 6 17 Figure KE Interior EE 6 19 Figure 6 14 Window TYPE eiere eniti kiirii vegclidi ven cdiee i i i iri lie 6 19 Figure 7 1 Conditioned Zone 7 1 Figure 7 2 Plan Orientation wc nnna Aia 7 2 Figure 7 3 Cathedral Ceiling oooooncicccnnnnnnnconnccnnncconorccnn cana nccnc arca 7 3 Figure 7 4 Party E UE 7 4 Figure 7 5 Exterior Wall xiii Roc 7 5 Figure 16 Surtace Tilt A A A A AA dd 7 6 Figure 2Opaque DOOK a lid li da 7 6 Figure 7 8 WIndOw Dalier ren aE EE a EETA OTA EER RE a E EET 7 8 SS NO a O O AE a a e a OO 7 10 Figure 11 0 WIN WM S A E ial A A 7 11 Figure E le Lu EE 7 12 Figure 7 12 Raised Plot rd DEE dE EE 7 13 Figure 7 13 Garage or Interior Floor 7 14 Figure 7 14 Multi Family Interior elle 7 14 Figure 7 15 Zone Elevation Ee IER 7 15 Figuro 16 ExterionFIDO Pi triste leo E EER Daun 7 16 Figure KE ie Floor Data a la a a E eects aetaeie aaae havens 7 17 Figure 7 18 Attached Garage nn 7 18 SICH ETC TR BEE 8 1 Fig re 8 2 HVAG System Data sridi da added 8 2 Figure 8 3 Zonal Control from Section A A 18 8 3 Figure 8 4 Type from Section AT 8 4 Figure 8 5 Heating System Data 8 6 Figure 8 6 Heat PUMP Dat di Pad ia 8 9 Figure 8 7 Air to Water Source Heat Pump norris 8 10 Figure 8 8 Hydronic Heating Data 8 11 Figure 8 9 Cooling System Data 8 14 Figure 8 10 Distribution System Data 8 17 Figure 8 11 DUCUL SALADO cintia pa 8 17 Figure 8
104. he construction technique also referred to as an advanced wall system incorporates the following construction techniques 24 inch on center framing eliminates intermediate framing for cripple and king studs uses single top plates double stud corners and in line i e stack framing to maintain continuity of transferring live loads of roof framing to wall framing which allows roof sheathing and exterior siding to be installed at full widths reduces framing for connections at interior partition walls Ge T walls and reduces window and door header sizes 6 5 Attic Roof Terminology 6 5 1 Attic Attic is an enclosed space directly below the roof deck and above the ceiling beams The attic component of the building contains the roof and attic and any insulation that occurs at the roof deck In CBECC Res the attic is a separate zone A typical attic does not include the ceiling or ceiling insulation which is modeled as part of the ceiling below attic 6 5 2 Cathedral Ceiling A cathedral ceiling or rafter roof is modeled when there is no attic above with a ceiling below A cathedral ceiling typically has insulation installed between the rafters and may be flat or sloped The insulation is in contact with the ceiling and there is typically a one inch air gap above the insulation so that moisture can be vented Whether there is an air space required above the insulation or the entire cavity is filled with insulation with no ven
105. he default system type is evaporative direct which is assigned an efficiency of 13 SEER or the minimum appliance efficiency standard for split system cooling For indirect or indirect direct select the appropriate type based on the Energy Commission appliance directory as well as the air flow and media saturation effectiveness or cooling effectiveness from the Energy Commission appliance directory and specify 13 EER if required input 13 SEER as well Direct evaporative coolers are assumed to be equivalent to a minimum split system air conditioner The evaporative cooling modeling methodology addresses two performance issues 1 rising indoor relative humidity during periods with extended cooler operation and 2 evaporative cooler capacity limitations Since modeling of indoor air moisture levels is beyond the capability of simulation models a simplified algorithm is used to prohibit evaporative cooler operation during load hours when operation is expected to contribute to uncomfortable indoor conditions The algorithm disallows cooler operation when outdoor wet bulb temperatures are 70 F or above As for the capacity limitations since evaporative coolers are 100 percent outdoor air systems their capacity is limited by the outdoor wet bulb temperature Each hour with calculated cooling load the algorithm will verify that the cooling capacity is greater than the calculated house cooling load 8 4 Distribution System Data When multiple dist
106. iency Standards 2013 Residential Compliance Report Version CF1R 04142014 574 Report Generated at 5 7 2014 11 49 18 AM CERTIFICATE OF COMPLIANCE RESIDENTIAL PERFORMANCE COMPLIANCE METHOD CF1R PRF 01 Calculation Date Time 11 47 Wed May 07 Project Name 1 Story Example 2014 Page 2 of 9 Calculation Description 1 Story Example Rev 12 Input File Name Exampl12 ribd REQUIRED SPECIAL FEATURES The following are features that must be installed as condition for meeting the modeled energy performance for this computer analysis Window overhangs and or fins HERS FEATURE SUMMARY The following are features that must be installed as condition for meeting the modeled energy performance for this computer analysis Window overhangs and or fins BUILDING FEATURES INFORMATION MEE DEE Es o7 Number of Dwelling Number of Ventilation Number of Water Project Name Conditioned Floor Area sft Units Number of Bedrooms Number of Zones Cooling Systems Heating Systems 1 Story Example 2100 ZONE INFORMATION O e u Q O w e e Zone Floor Area Avg Ceiling Zone Name Zone Type HVAC System Name ft Height Water Heating System 1 Water Heating System 2 Registration Number Registration Date Time HERS Provider CA Building Energy Efficiency Standards 2013 Residential Compliance Report Version CF1R 04142014 574 Report Generated at 5 7 2014 11 49 18 AM CERTIFICATE OF COMPLIANCE RESIDENTIAL PERFORMANCE COMPLIANCE METHOD CF1
107. iet Kallemeyn Secretariat This action was considered as item 11 on the agenda of the Business Meeting on April 22 2014 CBECC Res User Manual Appendix B CF1R Appendix B CF1R CERTIFICATE OF COMPLIANCE RESIDENTIAL PERFORMANCE COMPLIANCE METHOD CF1R PRF 01 SEH Date Time 11 47 Wed May 07 Project Name 1 Story Example Page 1 of 9 Calculation Description 1 Story Example Rev 12 Input File Name Exampl12 ribd el cea E A E S A eecht ET plans Manager Verlo E r ERREECHEN iii SF O Fet gerger egieb CRT ET fnew Corra OOOO NON INN ETT IS DECIA ION TESTA Ti CC EN ACE IS 20 Addition Slab Area FT2 INA La Glazing Percentage 20 0 COMPLIANCE RESULTS Detailed help on using the CF 1R Certificate of E F E Compliance is available via the Internet by either Building Complies with Computer Performance scanning the QR code or browsing This building incorporates features that require field testing and or verification by a certified HERS rater under the to supervision of a CEC approved HERS provider http www title24energycode org t24help cfir aspx This building incorporates one or more Special Features shown below ENERGY USE SUMMARY E Eo TT ww Energy Use Standard Proposed Compliance Percent KTDV ft Design Design Margin Improvement Space Cooling 14 11 11 78 16 5 aa ven AO mom Meet 8 E Pete Il Ta A EES Registration Number Registration Date Time HERS Provider CA Building Energy Effic
108. ight Fin Depth 12 00 ft TopUp 1 33 ft Depth 000 ff TopUp 0 00 ft DistL 1 00 ft Bot Up 0 00 ft DistR 000 ft BotUp 0 00 ft 7 3 3 5 Right Fin Depth Depth in feet of the wall fin to the right of the window that provides shading to the window 7 3 3 6 Distance Right Distance in feet from the right edge of the window to the right fin 7 3 3 7 Top Up Distance in feet from the top of the window to the top of the wall fin 7 3 3 8 Bottom Up Distance in feet from the bottom of the window to the bottom of the right fin 7 34 Glass Doors For a door with 50 percent or more glass area or a door with an NFRC rating the entire door area is modeled as a window The glass area in square feet of a door with less than 50 percent glass is the sum of all glass surfaces plus two inches on all sides of the glass to account for a frame This area is modeled as a window The remaining area of the door is modeled as opaque door see Section 7 2 6 CBECC User Manual Building Envelope 7 4 Skylights To create a skylight a section of cathedral ceiling with an area slightly larger than the skylight must be created Right click on the cathedral ceiling surface and pick lt create gt and select skylight see Figure 7 11 Figure 7 11 Skylight Envelope mechanical Skylight Data Project 1 Story Example F P BB Attic 2 540 SqFt Currently Active Skylight SK 1 y Conditioned 2 100 S
109. ing Data Recirculation Loops Currently Active DHW System DHW System 1 v jw Use Default recirculation loops Extra pipe insulation 9 5 Solar Water Heating Data When a water heating system has a solar system to provide part of the water heating the Solar Fraction SF is determined using an F chart program OG 100 or OG 300 calculation method see www gosolarcalifornia org The calculation methods require varying levels of detail about the solar system and the site of the installation Calculations use published efficiency data for the solar water heating system 9 5 CBECC User Manual Domestic Hot Water Figure 9 4 Solar Water Heating Data Annual Water Heating System Data Solar Water Heating Data Currently Active DHW System DH System 1 z Solar Fraction Type Annual v Annual Solar Fraction 0 40 Figure 9 5 Solar Water Heating Data Monthly Water Heating System Data Solar Water Heating Data Currently Active DHW System DHW System 1 bd Solar Fraction Type Monthly Monthly Solar Fractions JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOW DEC rf 7 TTT fF 7 9 5 1 1 Solar Fraction Type Select annual or monthly based on the appropriate calculation method for the system type See www gosolarcalifornia org 9 5 1 2 Solar Fraction Enter one annual solar fraction see Figure 9 4 or 12 monthly solar fractions see Figure 9 5 as calculated for the system type 9
110. ion The plan view using labels front left back and right If specifying a value it is based on front 0 left 90 back 180 and right 270 If the cathedral ceiling is on a part of the building facing an angle match the orientation of the walls See Section 7 1 7 2 2 7 Solar Reflectance The default aged solar reflectance is 0 10 for all roof types Alternatively enter the aged solar reflectance for a roof product as published by the Cool Roof Rating Council CRRC www coolroofs org A higher value is better so if a specific product color is unknown use a lower value among options to avoid having to regenerate compliance documentation during construction See also Section 5 2 1 7 7 2 2 8 IR Emittance The default thermal emittance or emissivity for all roofing materials is 0 85 Alternatively enter the emittance value published by the Cool Roof Rating Council CRRC www coolroofs org See also Section 5 2 1 8 7 2 3 Knee Walls Model any knee walls a sidewall separating conditioned space from attic space under a pitched roof or where ceiling heights change as an interior wall with the outside surface as attic with insulation value typical for a wall 7 2 4 Party Walls in Multi Family If each dwelling unit in a multi family building is modeled as a separate zone model any interior walls separating one dwelling unit from another as part of both dwelling units Both zones are identified as well as checking the box
111. ion Default Compliance 2015 Compliance 2014 is valid only for permit applications through December 31 2014 at which time federal air conditioning efficiency requirements change Compliance 2015 is valid any time and required for permit applications made on or after January 1 2015 At that time new federal cooling equipment standards of 14 SEER and an EER requirement based on equipment capacity of 11 7 EER or higher take effect for simplification CBECC assumes 11 7 as the standard minimum EER for all equipment Compliance 2015 also allows credit for photovoltaic systems in some climate zones see 4 3 1 5 below New standards for water heating also take effect NOTE When switching between Compliance 2014 and 2015 the minimum cooling efficiency values will change if you used default appliance efficiency levels The standard design for Compliance 2014 is based on 13 SEER and is 14 SEER and 11 7 EER for Compliance 2015 4 3 1 5 PV System Credit Optional photovoltaic system PV credit is available only when Compliance 2015 is selected and only in climate zones 9 15 for single family and town house projects Compliance 2015 may be used voluntarily at any time if credit for a PV system is desired A minimum of 2 kWdc is required for the compliance credit The credit assumes updated federal cooling equipment appliance standards and is the smaller of PV Generation Rate kTDV kWdc kWdc Max PV Cooling Credit Standard Design Cooling Ene
112. ion of R 5 8 per inch for closed cell and R 3 6 per inch for open cell see Section 6 4 6 6 2 7 Radiant Barrier Exposed on the Inside This check box identifies whether a radiant barrier is being installed in the attic 6 6 CBECC User Manual Construction Assemblies 6 7 Ceiling Below Attic and Interior Ceilings Figure 6 2 Ceiling Below Attic Data Ceiling below attic Data Currently Active Ceiling Ceiling below attic 1 Z Ceiling Name Ceiling below attic 1 Belongs to Zone Conditioned El Construction Ceiling below attic Cons v Ceiling Area 2 100 0 f2 The Construction called Ceiling below attic cons in Figure 6 2 is accessing the construction assembly shown in Figure 6 3 6 7 1 Ceiling Below Attic Construction Data 6 7 1 1 Construction Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 6 7 1 2 Can Assign To This is a fixed field To create a new assembly type at the zone level pick create and make the appropriate construction assembly type 6 7 1 3 Construction Type Options are wood or steel framed and Goor bilt op soot 6 7 CBECC User Manual Construction Assemblies Figure 6 3 Ceiling Below Attic Assembly Construction Data Currently Active Construction Ceiling below attic Cons x Construction Name Ceiling below attic Cons Can Assign To Ceili
113. ions to Section 150 1 c 11 6 6 Attic Construction Attic constructions are accessed by creating a new attic roof construction or modifying an existing assembly in the list of Construction Assemblies 6 6 1 Attic Construction Data 6 6 1 1 Construction Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 6 6 1 2 Can Assign To This is a fixed field To create a new assembly type at the zone level select lt create gt and pick the appropriate construction assembly type Figure 6 1 Attic Construction Data Construction Data Currently Active Construction Attic Roof Cons gt Frame R 5 965 Construction Name Attic Roof Cons Cavity R 2 393 Can Assign To Attic Roofs Ge EE Construction Type Wood Framed Ceiling DI Roofing Type Steep Slope Roof tile metal tile c y Construction Layers topmost to bottom Cavity Path Frame Path Roofing 10 PSF RoofTile y 10 PSF RoofTile gt Above Deck Insulation no insulation zl no insulation z Roof Deck Wood Siding sheathing decking Wood Siding sheathing decking Cavity Frame no insulation zl 2x4 24 in O C z Inside Finish select inside finish x select inside finish x M Non Standard Spray Foam in Cavity M Radiant Barrier Exposed on the Inside CBECC User Manual Construction Assemblies 6 6
114. irely in conditioned space HVAC equipment and all HVAC ducts supply and return furnace cabinet and plenums located within the conditioned floor space Location of ducts in conditioned space eliminates conduction losses but does not change losses due to leakage Leakage from either ducts that are not tested for leakage or from sealed ducts is modeled as leakage to outside the conditioned space Distribution system without ducts Air distribution systems without ducts such as ductless split systenaiconcdioners and heatpumps window air conditioners threugh the wall heat pumps_wall furnaces floor furnaces radiant electric panels or combined hydronic heating equipment Ducts located in outdoor locations Ducts located in exposed locations outdoors Verified low leakage ducts entirely in conditioned space Verified Low Leakage Ducts in Conditioned Space defined as duct systems for which air leakage to outside conditions is equal to or less than 25 CFM when measured in accordance with Reference Appendices Residential Appendix RA3 1 Ducts located in multiple places Allows a different location for supply and return ducts 8 4 1 6 Has Bypass Duct If the system meets zonal control criteria indicate if the system has or does not have a bypass duct When specifying that there is no bypass duct this credit requires HERS rater verification with Reference Appendices Residential Appendix RA3 1 4 6 8 4 1 7 Supp
115. l R5 8 inch 2 00 2 25 2 75 3 50 3 75 4 00 4 50 5 25 6 75 inches inches inches inches inches inches inches inches inches Required thickness open cell R3 6 inch 3 0 3 5 4 2 5 3 5 8 6 1 6 9 8 3 10 6 inches inches inches inches inches inches inches inches inches To receive the most credit spray foam insulation may be combined with improved construction quality which is modeled at the project level see Section 4 4 1 3 and requires HERS verification Reference Appendices Residential Appendix RA3 5 6 2 CBECC User Manual Construction Assemblies 6 4 1 Medium Density Closed Cell SPF Insulation The default R value for spray foam insulation with a closed cellular structure is R 5 8 per inch based on the installed nominal thickness of insulation Closed cell insulation has an installed nominal density of 1 5 to less than 2 5 pcf 6 4 2 Low Density Open Cell SPF Insulation The default R value for spray foam insulation with an open cellular structure is calculated as an R 3 6 per inch calculated based on the nominal required thickness of insulation Open cell insulation has an installed nominal density of 0 4 to 1 5 pounds per cubic foot pcf 6 4 3 Advanced Wall Framing Advanced wall framing AWF is applicable to wood framed walls that meet the installation criteria from Reference Appendices Joint Appendix JA 4 1 6 to reduce the amount of wood used for framing T
116. led to meet the minimum CFM required to meet the mandatory ventilation requirements found under Building in Section 4 4 8 6 1 3 W CFM IAQ Vent The default value is 0 25 W CFM The standard design is set to the same value as proposed up to 1 2 W CEM 8 6 1 4 IAQ Fan Type Select exhaust supply or balanced both exhaust and supply 8 6 1 5 IAQ Recovery Effectiveness When the fan type is balanced enter the AQ Recovery Effectiveness 8 7 Cooling Ventilation Fans Ventilation cooling systems bring in outside air to cool the house when this can reduce cooling loads and save cooling energy Whole house fans involve window operation and attic venting Central fan integrated systems use the HVAC duct system to distribute ventilation air Ventilation cooling systems that exhaust air through the attic require a minimum of 1 ft of free attic ventilation area per 1000 CFM of rated capacity for relief see Section 150 1 c 12 of the standards CBECC Res can model system types shown in Table 4 2 If a default prescriptive whole house fan was specified in Section 4 7 there is no need to provide details about the fan For central fan integrated CFI night ventilation first make sure that the Cool Vent tab at the project level is set to CFI see Section 4 7 1 1 For a fixed speed fan set the HVAC system type to Other Heating and Cooling System or for a variable speed fan set the HVAC system type to Variable Outdoor Air Ventilation
117. ll Construction Data Construction Data Currently Active Construction Exterior Wall Cons 4 Frame R 8 876 Construction Name Exterior Wall Cons Cavity R 20 305 Can Assign To Exterior Walls IS E Construction Type Wood Framed Wall El Construction Layers inside to outside Cavity Path Frame Path Inside Finish Gypsum Board gt Gypsum Board y Sheathing Insulation no sheathing insul no sheathing insul y Cavity Frame R 15 2x4 16 in OC gt Sheathing Insulation no sheathing insul y no sheathing insul z Exterior Finish R4 Synthetic Stucco zl R4 Synthetic Stucco 4 Non Standard Spray Foam in Cavity Winter Design U value 0 065 Btu h ft2 F meets max code 0 065 U value 0 065 6 8 2 Framed Wall Construction Layers inside to outside 6 8 2 1 Inside Finish Default value gypsum board 6 8 2 2 Sheathing Insulation List the sheathing or insulation layer in a wall on the inside surface conditioned space side of the framingframed wall or the size and material of furring on the inside surface Options are none gypsum board wood sheathing and R 1to R42 60 insulation 6 13 CBECC User Manual Construction Assemblies 6 8 2 3 Cavity Frame List the compressed R value of cavity insulation see Section 6 1 in the cavity column The framing column is to indicate the size of the framing and the spacing e g 2x6 with 16 inch on
118. low can be set to gypsum board or be left undefined select inside finish 4 6 18 CBECC User Manual Construction Assemblies Figure 6 13 Interior Floor Construction Data Currently Active Construction Garage Floor v Cavity Frame Sheathing Insulation Ceiling Below Finish 6 9 4 Window Types Construction Name Garage Floor Can Assign To Interior Floors z Construction Type Wood Framed Floor y Construction Layers topmost to bottom Cavity Path Frame Path Floor Surface Carpeted gt Carpeted S Concrete Fill no concrete fill v no concrete fill z Floor Deck Wood Siding sheathing decking Wood Siding sheathing decking R19 sl 2x12 16 in OC no sheathinginsul v no sheathing insul 7 Gypsum Board v Gypsum Board Z M Non Standard Spray Foam in Cavity Create a library of window types using product specific values for U factor and SHGCs Even if you wish to keep the default values be sure to retype them You may notice the text change from blue to red This ensures the values will not change if you change to a climate zone with different window requirements For the greatest flexibility leave size overhang or fin fields blank and create values for products with different values such as operable fixed glass block doors existing single pane windows or a specific brand of windows If you wish to take advantage of the defaulting system
119. ly 6 7 5 2 Roof Rise Specify the roof rise or roof pitch which is the number of feet the roof rises in a span of 12 feet may be shown as 4 12 for a roof rise of 4 feet in 12 feet If there are multiple pitches you can enter the roof rise of the largest area of roof 6 11 CBECC User Manual Construction Assemblies Figure 6 7 Cathedral Ceiling Data Cathedral Ceiling Data Currently Active Ceiling Cathedral Ceiling z Ceiling Name Cathedral Ceiling Belongs to Zone Conditioned Se Construction Cathedral R30 Ceiling Area 2000 ft2 Roof Rise Sp xin 12 Orientation Left v Solar Reflectance 0100 IR Emittance 0850 6 7 5 3 Orientation The plan view using labels front left back and right or specify a value based on front 0 left 90 back 180 and right 270 If the cathedral ceiling is on a part of the building facing an angle match the orientation of the walls For more on orientation and plan azimuth see Section 7 1 6 7 5 4 Solar Reflectance The default aged solar reflectance is 0 10 for all roof types Alternatively enter the aged solar reflectance for a roof product as published by the Cool Roof Rating Council CRRC www coolroofs org If only an initial value is available calculate the aged value using the equation in 3 7 1 of the 2013 Residential Compliance Manual A higher value is better so if a specific product color is unknown use a lower value among options to avoid having to reg
120. ly Ducts If Section 8 4 1 3 is unchecked so that credit may be obtained for a verified duct design reduced surface area see Reference Appendices Residential Appendix RA3 1 enter the supply duct details for area diameter and location The supply duct begins at the exit from the furnace or air handler cabinet 8 18 CBECC User Manual Mechanical Systems The supply duct surface area for crawl space and basement applies only to buildings or zones with all supply ducts installed in the crawl space or basement If the supply duct is installed in locations other than crawl space or basement the default supply duct location is Other Do not include the surface area of supply ducts completely inside conditioned space or ducts in floor cavities or vertical chases when surrounded by conditioned space with draft stops The surface area of each supply duct system segment is calculated based on its inside dimensions and length The total supply surface area in each unconditioned location attic attic with radiant barrier crawl space basement other is the sum of the area of all duct segments in that location Table 8 6 Summary of Verified Air Distribution Systems Measure Description Duct Sealing Mandatory measures require that space conditioning ducts be sealed Field verification and diagnostic testing is required Supply Duct Location Reduced Compliance credit for improved supply duct location reduced Surface Area and R value
121. m is zonally controlled and confirm that bypass ducts condition modeled matches installation 8 4 1 8 Return Ducts Return duct surface area is not a compliance variable If Section 8 4 1 3 is unchecked in order to take credit for a verified duct design enter the return duct details for area diameter and location The calculations assume that the return duct is located entirely in the attic unless a the return duct is located entirely in the basement in which case the calculation shall assume basement conditions for the return duct efficiency calculation or b the return duct is located entirely in conditioned space and the system meets the requirements for Verified Low Leakage Ducts in Conditioned Space in which case the return duct is assumed to be in conditioned space 8 19 CBECC User Manual Mechanical Systems 8 4 2 Low Leakage Air Handlers Credit can be taken for installation of a factory sealed air handling unit tested by the manufacturer and certified to the Energy Commission to meet the requirements for a Low Leakage Air Handler Field verification of the air handler s model number is required A Low Leakage Air Handler is reported on the compliance report and field verified in accordance with the procedures specified in Reference Appendices Residential Appendix RA3 1 4 3 9 8 43 Verified Low Leakage Ducts in Conditioned Space For ducted systems the user may specify that all ducts are entirely in conditioned space and
122. ms are shown in Figure 9 2 More information about distribution types can be found in Residential Compliance Manual Section 5 3 and Reference Appendices Residential Appendix RA3 6 9 3 CBECC User Manual Domestic Hot Water Figure 9 2 Multi Family Distribution Systems Water Heating System Data Solar Water Heating Data Recirculation Loops Currently Active DHW System DHW System 1 gt System Name DHW System 1 Distribution Type Standard v Multi Family Hot Water Distribution Type Demand Control with HERS verification v None Recirc Pump Power 0 50 bhp we Control Demand Control Standard Design for new construction Temperature modulation Central Temperature modulation amp monitoring No Control with HERS verification 2 Demand Control with HERS verification Temperature modulation with HERS verification Temperature modulation amp monitoring with HERS verification Water Heater s 1 9 4 Water Heating System Data Under the Mechanical Tab the water heating system details are defined see Figure 9 2 9 4 1 1 System Name User defined name This is the same name that was provided under the Zone Data tab see Section 5 4 1 11 9 4 1 2 Distribution type Drop down menu with options based on the building and water heater type being specified See Section 9 3 and Table 9 1 For installation and compliance requirements see Residential Compliance Manual Chapter 5 and Reference App
123. n 6 4 6 8 CBECC User Manual Construction Assemblies 6 7 2 6 Raised Heel Truss Check box to indicate if there is a raised heel truss and its height in inches With a standard roof truss Figure 6 4 the depth of the ceiling insulation is restricted to the space left between the roof deck and the wall top plate for the insulation path and the space between the bottom and top chord of the truss in the framing path If the modeled insulation completely fills this space there is no attic air space at the edge of the roof Heat flow through the ceiling in this attic edge area is directly to the outside both horizontally and vertically instead of to the attic space Figure 6 4 Section at Attic Edge with Standard Truss Potential radiant barrier Potential roof deck insulation Cl Finish system eg A raised heel truss Figure 6 5 provides additional height at the attic edge that depending on the height and the ceiling insulation can either reduce or eliminate the attic edge area and its thermal impact Figure 6 5 Section at Attic Edge with a Raised Heel Truss Potential below deck insulation Finish Bee 6 9 CBECC User Manual Construction Assemblies 6 7 3 Cathedral Ceiling Construction Data Each surface facing a different orientation will be modeled as a separate surface see Figure 6 7 and Section 6 7 5 Figure 6 6 Cathedral Ceiling Construc
124. n 6 8 7 2 5 5 Wall Area Gross wall area in square feet the area of windows and doors associated with the wall will be subtracted 7 2 5 6 Wall Tilt A wall typically has a tilt of 90 degrees but may range from greater than 60 degrees to less than 120 degrees see Figure 7 6 7 5 CBECC User Manual Building Envelope 7 2 5 7 Orientation The plan view orientation Use front left back and right If specifying a value it is based on front being equal to 0 left is 90 back is 180 and right is 270 rather than the actual building orientation The software will add the front orientation and this plan orientation to determine the actual orientation of the modeled surface See Section 7 1 Figure 7 6 Surface Tilt Outside Inside Inside a gt N e Outside Walls have a tilt greater than 60 Roofs have a tilt Outside Floors have a tilt but less than 120 less than 60 of 180 degrees degrees from the degrees from the from the horizontal horizontal horizontal 7 2 6 Opaque Doors Figure 7 7 Opaque Door Door Data Currently Active Door Front Dr Door Name Front Dr Belongs to Exterior Wall Front M Door Status New z Door Area 20 2 U factor 0 5 Btuh ft2 F Doors and windows fenestration are modeled separately For doors with glass first determine if only part of the door or the entire door is a window When a door is less than 50 percent glass calculate the glass area plus
125. n Type Options includeDefaultis wood and steel frame construction or SIPs 6 9 2 Raised Floor Construction Layers top to bottom 6 9 2 1 Floor Surface The available floor surface types isare carpeted hardwood tile and vinyl 6 9 2 2 Concrete Fill Default is no concrete fill Select no concrete fill or concrete fill 6 9 2 3 Floor Deck Select 1 no floor deck or 2 wood siding sheathing decking 6 9 2 4 Cavity Frame List the compressed R value of cavity insulation see Section 6 1 in the cavity column The framing column is to indicate the size of the framing and the spacing e g 2x6 with 16 inch on center framing or panel size for SIPs 6 9 2 5 Sheathing Insulation List the sheathing or insulation layer on the outside of the framing Options are none gypsum board and R1 to R4260 insulation 6 9 2 6 Exterior Finish or Ceiling Below Finish Optional input Seleet eithe woodsiding e eee a l 6 9 2 7 Non Standard Spray Foam in Cavity This check box identifies additional documentation and HERS verification requirements due a claimed R value that exceeds the default assumption of R 5 8 per inch for closed cell and R 3 6 per inch for open cell see Section 6 4 6 9 3 Floor Over Garage A floor over a garage is modeled as an interior floor When defining the building envelope the outside surface will be set to garage rather than another conditioned zone By modeling it as an interior floor the ceiling be
126. naces floor furnaces and heaters see Section 8 2 6 Table 8 1 Heating Equipment Descriptor Heating Equipment Reference Central Furnace Fuel fired central furnaces propane furnaces or heating equipment considered equivalent to a gas fired central furnace such as wood stoves that qualify for the wood heat exceptional method Gas fan type central furnaces have a minimum AFUE 78 Distribution is ducted Efficiency metric AFUE Heater wall floor Non central fuel fired space heaters such as wall heaters floor heaters or unit heaters or space heater Distribution is non ducted Efficiency metric AFUE Boiler Gas or oil boiler Boiler may be specified for dedicated hydronic systems or as part of a combined hydronic system providing space and water heating Distribution is non ducted Efficiency metric AFUE Electric All electric heating systems other than heat pumps including electric resistance electric boilers and storage electric water heaters Distribution system is ducted or non ducted Efficiency metric HSPF Combined Water heating system can be storage gas storage electric or heat pump water heater Hydronic Distribution systems can be ducted or non ducted Efficiency metric AFUE Recovery Efficiency or Thermal Efficiency 8 5 CBECC User Manual Mechanical Systems Figure 8 5 Heating System Data Heating System Data Currently Active Heating System Heating Component 1 DI Nam
127. nal method is approved for mini split multi split evaporative cooling room air conditioners room heat pumps or ground source heat pumps systems these systems are modeled as equivalent to a standard design system with no penalty and no credit 8 1 HVAC System Data The details of the HVAC system are shown in Figure 8 2 8 1 1 1 System Name User defined name 8 1 1 2 System Type Select the correct system type as e Heat pump heating and cooling system e Variable outdoor air ventilation central heat cool system for central fan integrated night ventilation cooling variable speed for example NightBreezeSmartVent or 8 1 CBECC User Manual Mechanical Systems e Other heating and cooling system for typical HVAC systems or for central fan integrated night ventilation cooling fixed speed for example Smart VentNightBreeze M Figure 8 2 HVAC System Data HVAC System Data Heating Equipment Cooling Equipment Heat Pump Equipment Currently Active HVAC System Hvac System 1 y System Name HVAC System 1 System Type Other Heating and Cooling System y Area Served 2 100 1 story Heating 1 Unique Heating Unit Types Heating Unit Fum 80 y Count 1 Iw 1 CntriFurnace unit s AFUE 80 0 Iv Cooling Bo Unique Cooling Unit Types Cooling Unit Split 14 12 m Count 1 Vv 1 SplitAirCond unit s 14 0 SEER 12 0 EER 350 0 CFM ton Iw Cooling Vent Fixed Flow X X
128. ncrete Fill no concrete fill v no concrete fill Floor Deck Wood Siding sheathing decking y Wood Siding sheathing decking y Cavity Frame R 19 zl 2x12 16 in O C z Sheathing Insulation L no sheathing insul y E no sheathing insul y Exterior Finish Wood Siding sheathing decking e Wood Siding sheathing decking v M Non Standard Spray Foam in Cavity Figure 6 12 Floor over exterior Construction Data Currently Active Construction Ext Floor Cons y Construction Name Ext Floor Cons Can Assign To Exterior Floors 53 Construction Type Wood Framed Floor Ge Construction Layers topmost to bottom Cavity Path Frame Path Floor Surface Carpeted v Carpeted ha Concrete Fill no concrete fill y La concrete fill iz Floor Deck Wood Siding sheathing decking y Wood Siding sheathing decking Je Cavity Frame R 19 y 24 16 in O C ZI Sheathing Insulation no sheathing insul zi no sheathing insul Exterior Finish select finish zl select finish 1 M Non Standard Spray Foam in Cavity 6 9 1 Raised Floor Construction Data 6 9 1 1 Construction Name User defined name 6 9 1 2 Can Assign To This is a fixed field To create a new assembly type at the zone level pick create and make the appropriate construction assembly type 6 17 CBECC User Manual Construction Assemblies 6 9 1 3 Constructio
129. nd a refrigerant to ground heat exchanger that provides heating cooling or heating and cooling functions Also able to heat domestic hot water Efficiency metric HSPF SEER EER 8 8 CBECC User Manual Mechanical Systems Figure 8 6 Heat Pump Data Heat Pump Data Currently Active Heating System Heat Pump System Name Heat Pump System Type SplitHeatPump Heating side of central split heat pump SplitHeatPump Heating side of central split system heat pump heating systems Distribution system shall be one of the ducted systems Efficiency Metric HSPF Heating Performance Cooling Performance HSPF 7700 ratio SEER 13 0 kBtuhy kw Capacity Btuh COP ratio EER 113 V es em CFM per Ton 350 CFM ton AC Charge Verfied zl emt 24700 Refrigerant Raoa y F Multi Speed Compressor 8 2 3 Air to Water Source Heat Pump See Figure 8 7 for air to water source heat pump input screens 8 2 3 1 Name User defined name for the system 8 2 3 2 Type Heat pump system type see Table 8 2 8 2 3 3__Heating Performance Enter the Coefficient of Performance COP Efficiency information for a specific model number is found by performing an advanced search in the Energy Commission s appliance directories http www appliances energy ca gov or from the AHRI Certified Products Directory http www ahridirectory org 8 2 3 4 Capacit 47 Degrees F Required value from the
130. nd construction details are reported In addition to typical wood frame construction CBECC Res can model wood framed walls with advanced wall framing AWF steel frame construction concrete masonry insulated concrete form ICF brick log strawbale and structurally insulated panels SIPs 6 1 Cavity R Value When completing assemblies use the compressed product R value for the cavity space Table 6 1 Table 6 1 Compressed Insulation R values Nominal Compressed R value Inside Cavity for Product Rated as Lumber Cavity Size Depth R 38 R 38C R 30 R 30C R 25 R 22 R 21C R 19 R 15C R 13 R 11 2x12 11 1 4 37 38 30 2x10 9 1 4 32 35 30 30 25 2x8 7 1 4 27 30 25 27 24 22 21 19 2x6 5 1 2 21 22 20 19 21 18 2x4 3 1 2 14 15 13 15 13 11 2x3 2 1 2 11 10 8 9 2x2 1 1 2 6 6 6 2 2x1 3 4 Standard Product 12 10 1 4 9 1 2 8 1 4 8 6 3 4 5 1 2 6 1 4 3 1 2 3 1 2 3 1 2 Thickness 6 2 Assembly Types The types of assemblies that can be created in the program are Exterior wall Interior wall also used for demising walls or walls between house and garage Attic roof Cathedral roof Ceiling below attic Interior floor CBECC User Manual Construction Assemblies Exterior floor Floor over crawl space Also included are some typical assemblies T24 2013 exterior wall wood 2x4 T24 2013 R38 ceiling below
131. nditioned space above with raised floor insulation 2 insulated with reduced ventilation as used in the Building Code or 3 sealed and mechanically ventilated crawl space also called a controlled ventilation crawl space or CVC For CVC credit installation requirements see Reference Appendices Residential Appendix RA 4 5 1 5 3 1 3 Crawl Perimeter The length in feet of the perimeter similar to the slab edge length for a slab on grade floor 5 3 1 4 Crawl Height The depth of the crawl space in feet 5 4 Conditioned Zone To create the house or dwelling unit right click on project or edit an existing conditioned zone see Figure 5 4 5 5 CBECC User Manual Zones Figure 5 4 Conditioned Zone Data Zone Data Currently Active Zone Conditioned 5 Name Conditioned Zone Status New x Type Conditioned x Floor Ares ER HVAC System Hvac System 1 la Stories 1 Ceiling Height 3 ft Floor to Floor 10 ft GE DHW System 1 Min Gas y Bottom 0 7 ft Win Head Height 7 67 ft DHW System 2 none 5 4 1 Conditioned Zone Data 5 4 1 1 Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 5 4 1 2 Zone Status The default is new for new construction or the added floor area of an addition Other options include altered and existing 5 4 1 3 Type The default zone typ
132. ndow head bheiebt A 5 7 Window pe 6 19 7 7 Wood RE 8 12 TAES L EERE 4 2 Zonal contra 4 6 5 1 5 6 8 3 DYPASS CGUCT oarda errari A a An 8 18 multi speed COMPresSOr coccococcccconocccccannss 8 15 Zone type CONCITIONCM cooonccccconocccccononcncnanancncnanancnnnnnn 5 6 living OF sleeping 5 6 CBECC Res User Manual Appendix A Resolution approving CBECC Res Appendix A Resolution approving CBECC Res A 1 STATE OF CALIFORNIA Energy Resources Conservation And Development Commission 2013 Building Energy Efficiency Standards Docket No 12 BSTD 01 California Code of Regulations Title 24 Resolution No 14 0422 8 Parts 1 and 6 RESOLUTION OF THE ENERGY COMMISSION APPROVING REVISIONS TO THE 2013 PUBLIC DOMAIN RESIDENTIAL COMPLIANCE SOFTWARE WHEREAS the Warren Alquist State Energy Resources Conservation and Development Act Public Resources Code sections 25000 et seq 25402 1 subd b requires the Energy Commission to among other things establish a process for certifying calculation methods for demonstrating compliance with its building energy efficiency standards and WHEREAS on September 11 2013 the Energy Commission approved the 2013 Public Domain California Building Energy Code Compliance Residential CBECC Res software version 1 0 for estimating energy consumed by residential buildings under Public Resources Code section 25402 1 subdivision a and for demonstrating compliance with the performan
133. nerated at 5 7 2014 11 49 18 AM CERTIFICATE OF COMPLIANCE RESIDENTIAL PERFORMANCE COMPLIANCE METHOD CF1R PRF 01 Calculation Date Time 11 47 Wed May 07 Project Name 1 Story Example 2014 Page 9 of 9 Calculation Description 1 Story Example Rev 12 Input File Name Exampl12 ribd DOCUMENTATION AUTHOR S DECLARATION STATEMENT 1 I certify that this Certificate of Compliance documentation is accurate and complete Documentation Author Name Documentation Author Signature Company Signature Date Address CEA HERS Certification Identification applicable City State Zip RESPONSIBLE PERSON S DECLARATION STATEMENT certify the following under penalty of perjury under the laws of the State of California am eligible under Division 3 of the Business and Professions Code to accept responsibility forthe building design identified on this Certificate of Compliance certify that the energy features and performance specifications identified on this Certificate of Compliance conform to the requirements of Title 24 Part 1 and Part 6 of the California Code of Regulations The building design features or system design features identified on this Certificate of Compliance are consistent with the information provided on other applicable compliance documents worksheets calculations plans and specifications submitted to the enforcement agency for approval with this building permit application Registration Number Registration Date Tim
134. ng systems Assume energy efficiency ratio of 13 EER Requires air flow and media saturation effectiveness from the Energy Commission appliance directory Distribution is ducted or non ducted Efficiency metric EER Evaporative Indirect Indirect cooling systems The default distribution system is duct in attic evaporative cooler duct insulation requirements are the same as those for air conditioner ducts Assume energy efficiency ratio of 13 EER Requires air flow and media saturation effectiveness from the Energy Commission directory Efficiency metric EER Evaporatively Cooled A split mechanical system with a water cooled condenser coil Distribution is Gondenser ducted_lEfficiency metric EER Gas Cooling Gas absorption cooling Distribution is ducted Efficiency metrics COPQS5 the rated COP for the gas portion CAP9S5 the rated capacity and PPC the parasitic electric energy at rated conditions in WattsH Large Package Air Conditioner Systems rated at or above 65 000 Btu hr cooling capacity Distribution is ducted Efficiency metric EER No Cooling When the proposed building is not cooled or when cooling is optional to be installed at some future date Both the standard design and proposed design use the same default system Distribution is ducted either the same system as heating or default ducts in attic See also section 8 3 2 Efficiency metric SEER Package Air Conditioner
135. ngle Family Distribution Type nan nnnnn cnn nc narco 9 2 9 3 2 Multi Family Distribution TYPE serais aeaa ANARE E EINEAN nn 9 3 9 4 Water Heating System Data ooooonncciniccnncccnoncnononnnnnacnnoncn corn n nano rra nc 9 4 9 5 Solar Water Heating Data 9 5 9 6 Water Head Dates iii td is 9 6 Chapter 10 Additions and Alterations cccccscesseeeeseeeeeeeeeeeeeeeseaeeeseeeeeeeeeseaesaseeeneeaeseeeeesnaeseseenenseaenes 10 1 10 1 Addon Al EE 10 1 10 2 Setting the Standard Design 10 1 10 2 1 Third Party Verifica initial 10 1 10 2 2 Efficiency Threshol ie inside a eon hha hid 10 2 10 3 Existing Building EE 10 2 E GE ele te EEN 10 3 10 5 AdditioVAlleratiON oiccin A dE dd 10 4 10 5 1 Radiant Barren tii 10 5 10 5 2 HVAC 10 6 10 5 3 MEE aT RAAE CE EEEE denne Aa EEAS d AEDA R E AER EADE SAARE L he abode 10 7 10 5 4 Mechanical Ventilation ve aii eae aie eines athe dane hn ene cane 10 8 10 5 5 Ventilation Cooling Whole House Fan 10 8 Appendix A CBECC Approval Appendix B Certificate of Compliance FIGURES Figure 2 1 SOUUP EE 2 1 Figure 2 2 Menu and Tool Bi eiii 2 1 Figure 2 3 Main Sore eN O a a a A araa aa ech 2 4 Figure 22 Simple House Exam ple citar ai Eed cee ane 3 2 Figure 3 2 Output for Simple House in Climate Zone 172 3 6 Figure 3 3 Updated Output for Simple House coooooconoccconcccconccononannnncononcnnnnnn nono nana nc cnn nana nana cnn rra r anna nnn nn nancncns 3 7 Figure t i Pro ect norma Mini TE AEE A
136. ngs below attic gt Construction Type Wood Framed Ceiling z Construction Layers topmost to bottom Cavity Path Frame Path no attic floor Je 2x4 Bottom Cord of Truss 24 in y Attic Floor no attic floor K Cavity Frame IR 38 La Sheathing Insulation L no sheathing insul Ei F no sheathing insul x Inside Finish Gypsum Board Gypsum Board Ei M Non Standard Spray Foam in Cavity Raised Heel Truss 6 7 2 Construction Layers 6 7 2 1 Attic Floor The available types include no attic floor and wood siding sheathing decking 6 7 2 2 Cavity Frame List the compressed R value of cavity insulation see Section 6 1 in the cavity column In the framing column select the size of the framing and the spacing such as 2x12 with 24 inch on center framing or 2x4 roof truss at 24 inches on center 6 7 2 3 Sheathing Insulation List the sheathing or insulation layer Options are none gypsum board wood sheathing and R1 through Ri2to R60 insulation 6 7 2 4 Inside Finish This is the inside finish if any of the attic space and does not include the ceiling below the attic A layer of gypsum is not typically included 6 7 2 5 Non Standard Spray Foam in Cavity This check box identifies additional documentation and HERS verification requirements due a claimed R value that exceeds the default assumption of R 5 8 per inch for closed cell and R 3 6 per inch for open cell see Sectio
137. ntrlFurnace and keep the default 78 AFUE and click lt OK gt d Now move to Cooling Unit and follow the same process picking SplitAirCond and keeping the default efficiencies and refrigerant charge settings since this sample is in a hot climate we will keep the verified refrigerant charge which is a HERS verification test to avoid an energy penalty in this climate zone The 11 3 default EER does not require HERS verification A value higher than 11 3 does require verification as explained in Section 8 3 1 Click lt OK gt e In the Distribution field follow the same procedure selecting ducts in an unconditioned attic and accepting the default values a check box sets the default values based on the climate zone Click lt OK gt f Next create the Fan data Pick the Single speed furnace fan and click lt OK gt Accept the W CEM cooling value of 0 58 and click lt OK gt g You are now back at the HVAC System Data tab Click lt OK gt to return to the Zone Data Although in this exercise we will not further edit the HVAC system to do so you would access it by clicking on the Mechanical tab at the CBECC Res main screen where a tree similar to the Envelope tree appears h Next click on the drop down menu arrow at DHW System to begin defining the domestic hot water system components Pick create new DHW System and keep the default system name Keep the Distribution as Standard Pick from the drop down menu fo
138. o serve an addition if a replacement system including ducts will be installed for the whole house or if a supplemental system will be added for the addition only Existing equipment does not need to meet current standards Exception 4 to Section 150 2 a PAING equipment to serve addition For the existing and new zones set the system status to existing and model the actual values for the existing system and duets the standard and proposed design will both have the same equipment Figure 10 7 Forthe addition zone define a separate eR preser phegea speuren aea EER value oHless than 413 suchas41 25 sethata HERS verified EERisnottriggered The distribution system data will have both See and new TE oi te system defined Figure 10 8 Replacement system for whole house For the existing and new zones set the system status to altered and model the proposed system conditions for equipment and duets if verified specify the existing conditions as verified by the HERS Rater Model the appropriate conditions for the ducts which may be new if existing ducts are being replaced or existing new Fortheadditionzone define a separate system with the system status new with same proposed conditions for equipmentand duetos 10 6 CBECC User Manual Additions and Alterations Figure 10 7 Existing System Existing Zone HVAC System Data Heating Equipment Cooling Equipment Heat Pump Equipment
139. oaded to the HERS provider Keep the run scope as Newly Constructed Click on Building and enter a description such as Single Family Residence enter the front orientation as 180 see North arrow in above figure and number of bedrooms as 2 For this example we will assume the building has natural gas and we will not model an attached garage For now we will leave the Indoor Air Quality and Cool Vent tabs alone IAQ will model an appropriately sized default exhaust fan Cool vent for example a whole house fan will be set for you based on the climate zone and the presence of an attic Click OK Either click on the save button or Select lt File gt lt Save As gt and name the file Simple House ribd Some getting around tips are that the project is called Simple House so that is the default name for the input file This name appears at the head of the project tree of the main CBECC Res screen Next we will add child components to the parent component To add components right click on the parent component and choose lt create gt and pick the type of component you wish to add To edit an existing component either double click or right click and pick lt edit gt If you need to edit or check a project component address climate zone front orientation IAQ ventilation etc double click on the word project and it brings up the initial screen with the project tabs running across the top of the screen
140. omes may be built in any orientation The building must comply with the same energy features in all 4 5 CBECC User Manual Project orientations A single CF1R will display the compliance for the four cardinal orientations north east south and west 4 4 1 5 Single Family or Multi family Use the check box to indicate if the building is a single family dwelling R 3 occupancy group or is a multi family building R 1 or R 2 occupancy group with three stories or less When multi family is selected the dwelling unit information is defined under the separate dwelling unit tab This structure allows for modeling different dwelling unit configurations within a single building with unique HVAC ventilation and water heating conditions Multi family buildings can be modeled with each dwelling unit as a separate zone the most detailed and complex or with each floor as a separate zone A 2 story two zone sample file is included with CBECC Res This structure requires the dwelling units be defined separately for each floor For example if there are 1 bedroom and 2 bedroom configurations on both the first floor and second floor they must be identified separately under the dwelling unit tab see Section 4 4 1 10 For additional guidance see Section 5 4 1 10 for structuring the HVAC system inputs and Section 5 5 for information about defining the garage zone in a multi family building Party walls or a party floor must be modeled as an interior sur
141. on the detailed information about the supply and return ducts is completed based on other building inputs including climate zone NOTE If you change the climate zone to one with a different Package A duct insulation value the program will change to match Package A which may not match the plans Figure 8 11 Duct Leakage F Use defaults for all inputs below Has Bypass Duct Iw Low Leakage Air Handler Duct Leakage speciy gt Duct Insulation R value 6 0 F ft2 h Btu 8 4 1 4 Duct Leakage Selected sealed and tested To specify a target leakage number select Low Leakage Air Handler see Figure 8 10 HERS verification is required for this mandatory measure 8 17 CBECC User Manual Mechanical Systems 8 4 1 5 Duct Insulation R value Specify the R value of HVAC system ducts The mandatory minimum R value allowed is 6 Valid options are 0 2 1 4 2 6 0 8 0 10 0 and 12 0 Descriptor Table 8 5 Distribution Type Distribution Type and Location Ducts located in unconditioned attic Ducts located overhead in the unconditioned attic space and default condition for no cooling Ducts located in a crawl space Ducts located in an unconditioned crawl space Ducts located in a garage Ducts located in an unconditioned garage space Ducts located within the conditioned space except 12 lineal feet Less than 12 linear feet of duct is outside of the conditioned space Ducts located ent
142. on grade floors are modeled in conditioned spaces unconditioned spaces heated slab floors slab floors with mandatory or optional slab edge insulation floors with 20 exposed and 80 covered or some other combination of exposed and covered slab Figure 7 17 Slab Floor Data Slab Floor Data Currently Active Slab Floor Slab On Grade Floor y Slab Floor Name Slab On Grade Floor Belongs to Zone Conditioned Lal la Slab Floor Status New Floor Area 1 350 f2 Perimeter 128 ft M Heated Slab Surface Default 80 carpeted covered 20 gt Iw Slab Has Edge Insulation R value amp Depth R 5 8inches 7 6 1 1 Slab Floor Name If the building plans use a unique tag or ID use that for the name Each name within a zone or on a surface must be unique 7 6 1 2 Belongs to Zone The name of the zone in which the slab is being modeled 7 6 1 3 Slab Floor Status Select New Existing or Altered 7 6 1 4 Floor Area Area in square feet measured from the outside of the exterior surface of the zone 7 6 1 5 Perimeter Length of slab edge in feet between the space modeled and exterior only Do not include the length of edge that occurs between the house and garage an area that cannot be insulated if the edge is being insulated 7 6 1 6 Heated slab Check box to indicate that the slab is heated in which case mandatory insulation requirements apply See Standards Section 110 8 CBECC
143. oned space as interior although actually demising walls In creating the building envelope the wall will have conditioned space on one side and unconditioned space or zone on the other side When defining multi family buildings party walls separating zones are defined as part of both zones in which they occur The box indicating that there is a dwelling unit on the other side is checked When the wall is an interior or demising wall both the inside and outside surfaces are gypsum board and there will be no solar gains on the unconditioned side Knee walls are insulated as a wall 6 15 CBECC User Manual Construction Assemblies Figure 6 9 Interior Walls Construction Data Currently Active Construction Interior Wall Cons z Construction Name Interior Wall Cons Can Assign To Interior Walls Y Construction Type Wood Framed Wall gt Construction Layers inside to outside Cavity Path Frame Path Inside Finish Gypsum Board zl Gypsum Boara gt Sheathing Insulation no sheathing insul zl nosheathing insul gt Cavity Frame R 15 T 2x4 2 16 in 0 0 d Sheathing Insulation no sheathingfinsul no sheathing insul Other Side Finish Gypsum Board zl Gypsum Board EN 6 8 6 Garage Exterior Walls The outermost walls of the garage wall or unconditioned storage space which are modeled as part of an unconditioned zone typically do not have insulation see Figure 6 10 Figure 6 10
144. onic define the system type from the drop down menu as CombHydro In the field labeled Combined Hydronic Water Heater specify the device that is providing the space heating Figure 8 8 Hydronic Heating Data Heating System Data Currently Active Heating System Hydronic y Name Hydronic Type CombHydro Water heating system can be gas storage gt CombHydro Water heating system can be storage gas StoGas LgStoGas storage electric StoElec or heat pump water heaters StoHP Distribution systems can be Radiant Baseboard or any of the ducted systems and can be used with any of the terminal units FanCoil RadiantFlr Baseboard and FanConvw Sizing Factor 2 ratio Combined Hydronic Water Heater Lrg 100 G 96 TE 1 02 SBL gt 8 2 6 Hydronic Distribution Systems and Terminals The only combined hydronic systems currently implemented are those that have 10 feet or less of piping in unconditioned space When hydronic systems have more than 10 feet of piping plan view located in unconditioned space additional information about the distribution system is needed Other information reported includes e Piping Run Length ft The length plan view of distribution pipe located in unconditioned space in feet between the primary heating cooling source and the point of distribution 8 11 CBECC User Manual Mechanical Systems e Nominal Pipe Size in The nominal as opposed to t
145. ontrol Credit living vs sleeping jw Has attached garage 4 4 CBECC User Manual Project 4 41 Building Information 4 4 1 1 Building Description The building description will appear as the second line of general project information on the CF1R It is a user defined label and is different from the project name 4 4 1 2 Air Leakage Default value no blower door test for buildings with space conditioning ducts in unconditioned space and the default condition for no cooling is 5 for single family and 7 for other buildings When there are no heating and or cooling system ducts in unconditioned space the default is 4 4 for single family buildings and townhomes and 6 2 for all others buildings If a single family or town home will have HERS verified infiltration testing blower door test model an achievable target leakage area value For multi family buildings there is no compliance option for infiltration testing When a value lower than default is modeled diagnostic testing for reduced infiltration with the details and target values modeled is reported as a HERS Required Verification on the CF1R This input represents the air flow through a blower door at 50 pascals Pa of pressure measured in cubic feet per minute called CFM50 or ACH50 CFM50 x 60 minutes divided by the volume of conditioned space is the air changes per hour at 50 Pa called ACH50 4 4 1 3 Insulation Construction Quality The presence of improved verified high
146. ost plan checkers will not understand why the site plan and your building front do not match Additionally to assist inspectors the CF1R report was modified to include the side of the building or plan orientation 7 1 CBECC User Manual Building Envelope Figure 7 2 Plan AzimuthOrientation 15 4 2 Led mm Plan Orientation COVE HD 8A 270 amp 2 o all N ES RW D o Vi o l wo N zU 5060 SL ll Plan Orientation 90 iu 5060 SL TEMP LA 1 Vi gt 12080 SL GL DOOR TEMP 7 y HPAHD22 2P 5 4 6 0 N Ir 1 Wi MS saan 7 2 Opaque Surfaces Working from top down add any ceilings below attic as well as any cathedral ceilings 7 2 1 Ceiling below attic 7 2 1 1 Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 7 2 1 2 Belongs to Zone Select any appropriate zone already included in the building model When copying components of one zone to another this field automatically changes 7 2 1 3 Construction If no appropriate construction assembly is available right click and pick create discussed in depth in Chapter 6 Construction Assemblies 7 2 1 4 Ceiling Area Area of the ceiling in square feet 7 2 CBECC User Manual Building Envelope 7 2 2 Cathedral Ceiling The information needed to define a cathedral ceiling is
147. ported to a spreadsheet format for sorting and searching Alternatively data may be found in the Air Conditioning Heating and Refrigeration Institute http www ahridirectory org ahridirectory The AHRI directory does not contain the standby loss for large water heaters which is a required input The federal minimum efficiency used to establish the standard design changes in 2015 When natural gas is used the efficiency for small gas storage changes from an energy factor of 0 575 in 2014 to 0 60 in 2015 If the standard design is based on electric the minimum energy factor for small electric storage changes from 0 904 in 2014 to 0 945 in 2015 9 2 Water Heater Types Tank types are based on the Appliance Efficiency Regulations definitions e Small storage has an input of less than or equal to 75 000 Btu gas propane less than or equal to 105 000 Btu hr oil less than or equal to 12 kW electric or less than or equal to 24 amps heat pump e Small tankless has an input of less than or equal to 200 000 Btu per gas propane 210 000 Btu per hour or less oil fired or 12 kW or less electric A tankless water heater is a water heater with an input rating of at least 4 000 Btu per hour per gallon of stored water e Large storage has an input greater than 75 000 Btu hr gas or propane greater than 105 000 Btu hr oil fired or greater than 12 kW electric Rated with thermal efficiency and standby loss CBECC User Manual Domestic Hot Wate
148. pplemental and may be ignored Residential Compliance Manual Section 8 7 3 and Section 150 1 c 6 If the system does not meet these criteria the system that is modeled is the one that consumes the most TDV energy For spaces with electric resistance heat in addition to another heating system the electric resistance heat is the system that must be modeled 8 2 Heating Systems The heating system is the equipment that supplies heat to an HVAC System Heating systems are categorized according to the types show in Table 8 1 8 4 CBECC User Manual Mechanical Systems 8 2 1 Heating System Data other than heat pump See Figure 8 5 for the heating system data input screen which varies slightly by equipment type Not all system types are currently implemented 8 2 1 1 Name User defined name for the heating system 8 2 1 2 Type Heating system type see Table 8 1 8 2 1 3 Efficiency Enter an appropriate efficiency for the equipment type e g 80 6 AFUE The software will include the minimum efficiency for typical system types Efficiency information for a specific model number of heating and cooling equipment is found by performing an advanced search in the Energy Commission s appliance directories http www appliances energy ca gov or from the Air Conditioning Heating and Refrigeration Institute AHRI Certified Products Directory http www ahridirectory org For more information on the default efficiency for wall fur
149. qFt Y Cathedral Ceiling y S t 5 Sk 1 L B sit kylight Name E Ceiling below attic Belongs to Cathedral Ceiling Cathedral Ceiling gt BM Front ES FI Skylight Status New E F2 n9 HB Front Dr Multiplier 1 BB Left BB L1 OB Back Skylight Area 4 2 ES B1 SGD deidad BB B2 NFRC U factor 0 44 Btuh ft2 F ES B3 SGD A BB Right Solar Ht Gain Coef 0 35 we Br Source of Ufactar SHGC NFRC z E GarToHouse Front 7 4 1 1 Skylight Name User defined name If the plans use a window schedule or unique identifier that identifier can be used for the window name Each skylight on a given surface must have a unique name 7 4 1 2 Belongs to Cathedral Ceiling Defaults to the cathedral ceiling on which you picked create 7 4 1 3 Skylight Area Area of the skylight in square feet 7 4 1 4 Skylight Status Select New Existing or Altered 7 4 1 5 Multiplier The number of identical skylights 7 4 1 6 NFRC U factor U factor from National Fenestration Rating Council for the skylight www nfrc org or default from Section 110 6 Table 110 6 A 7 4 1 7 Solar Heat Gain Coefficient Solar Heat Gain Coefficient SHGC from National Fenestration Rating Council for the skylight www nfrc org or default from Section 110 6 Table 110 6 B 7 12 CBECC User Manual Building Envelope 7 4 1 8 Source of U factor SHGC The three valid sources are NFRC default or Alternate Default Fenestration Procedure
150. r e Large tankless has an input of greater than 200 000 Btu per hour gas propane greater than 210 000 Btu per hour oil fired or greater than 12 kW electric Tankless water heater is a water heater with an input rating of at least 4 000 Btu per hour per gallon of stored water e Boiler is a space heater supplying steam or hot water for space heating e Indirect is a water heater consisting of a storage tank with no heating elements or combustion devices connected via piping and recirculating pump to a heat source consisting of a boiler 9 3 Distribution Types 9 3 1 Single Family Distribution Type Distribution types Figure 9 1 range from standard distribution system multiplier 1 0 to recirculating with no control distribution system multiplier 7 0 as options with no HERS verification requirement Some systems are allow for a higher credit if the system will be verified by a HERS rater See Table 9 1 for a comparison of the multiplier lower number equals more efficient system More information about distribution types can be found in Residential Compliance Manual Section 5 3 and Reference Appendices Residential Appendix RA3 6 Figure 9 1 Single Family Distribution Systems Water Heating System Data Solar Water Heating Data Recirculation Loops Currently Active DHW System Min Gas ka System Name Min Gas Distribution Type Standard z specify Standard Pipe Insulation All Lines Insulated and Protected Pipe
151. r Water Heater s 1 create new Water Heater and keep the default name Click lt OK gt to accept the default characteristics for the water heating system Click lt OK gt We will keep the water heater count as 1 Click lt OK gt again to accept the building details for floor area stories HVAC and DHW systems NOTE In this tutorial we often accept the default names But you may wish to name your components something more descriptive since you will likely use a previous project to begin a new project and the names will help you identify the characteristics of that component 14 Next we will add components from the top down beginning with a 600 square foot ceiling Right click on the House zone and choose lt create gt and then Ceiling below attic Accept the default name and click lt OK gt Then follow the prompts to create a 600 square feet and create a new construction assembly Set the cavity insulation to R 38 ceiling below attic Click lt Ok gt three times Notice that in addition to the ceiling the program has created an attic zone with 600 square feet 15 Next add exterior walls a Right click on the House zone again Choose lt create gt and then pick lt exterior wall gt Change the Exterior Wall Name to Front Wall and click lt OK gt 3 4 CBECC User Manual Tutorial 16 17 18 19 20 21 b Enter a gross area of 240 square feet of wall area and for the construction assembly c
152. r is a separate program used to generate the Certificate of Compliance CF1R This is a web based application which enables registering the CF1R which is required any time there are HERS measures in a building For more on CF1R registration see Residential Compliance Manual Section 2 1 1 1 13 3 Proposed Design The user defined proposed building modeled in CBECC Res is called the proposed design The proposed design energy use is compared to the standard design to determine if the building complies with the standards The building configuration is defined by the user through entries for floors walls roofs and ceilings windows and doors The areas are defined along with performance characteristics such as insulation R values U factors SHGC etc The entries for all of these building elements must be consistent with the actual building design and configuration 1 13 4 Standard Design CBECC Res creates a version of the proposed building that has the features of Section 150 1 c and Table 150 1 A Package A in the specified climate zone to establish the allowed energy budget or standard design The standard design is compared to the proposed design and if it complies a Certificate of Compliance CF1R can be produced For newly constructed buildings the standard design building is in the same location and has the same floor area volume and configuration as the proposed design except that wall and window areas are distributed equally
153. reate a new construction Call it Wall R15 4 Pick R 15 cavity insulation and an Exterior Finish of R4 Synthetic Stucco this is the appropriate method for modeling 1 coat stucco Since the rest of the inputs are correct click lt OK gt twice c Set the Orientation to front Note if you like to model an orientation value rather than front left etc please read section 7 1 and check the CF1R before printing because whatever number you enter is added to the front orientation Leave the wall tilt as 90 And click lt OK gt d From the House repeat step b three more times for a Left Wall Back Wall and Right Wall remembering to enter the correct gross wall area 160 for left and right walls 240 for back wall and change the orientation to lt Left gt lt Back gt or lt Right gt The program will let you copy data from any of the previous Exterior Walls or you can choose none at the lt Copy Data From gt dialog box Return to the main screen by clicking lt OK gt after entering the last wall The walls are child components to the parent House zone Before creating any windows first set up the Window Types library in a manner that works for your projects For example if you use certain brands of windows on the row Window Types Right Click and pick lt Create gt Give it a name such as Operable BrandX 0 32 0 23 Picture BrandY 0 31 0 20 SGD BrandX 0 28 0 24 and set the U factor and SHGC values only
154. require the radiant barrier in the garage unconditioned space if a radiant barrier is installed in the attic over conditioned space and that same attic is over the unconditioned space 6 5 7 Roof A roof is defined as the outside cover of a building or structure including the structural supports decking and top layer that is exposed to the outside with a slope less than 60 degrees from the horizontal When Package A the basis of the standard design contains a minimum requirement for solar reflectance and emittance the values vary by roof slope A low slope roof has a ratio of rise to run or pitch of 2 in 12 or less lt 9 5 degrees from the horizontal A steep slope roof has a ratio of rise to run of greater than 2 12 gt 9 5 degrees from the horizontal Although there is no mandatory cool roof requirement these are the characteristics used to establish the standard design so there will be an energy penalty when default roof values are used 6 4 CBECC User Manual Construction Assemblies 6 5 8 Steep Slope Roof A steep slope roof has a ratio of rise to run of greater than 2 12 gt 9 5 degrees from the horizontal Although a specific value is not mandatory the standard design for climate zones 10 through 15 is an aged solar reflectance of 0 20 If the roof membrane has a mass of at least 25 lb ft or the roof area incorporates integrated solar collectors the roof may assume the standard design value for solar reflectance except
155. rgy kTDV Where the factors are shown in Table 4 1 4 3 CBECC User Manual Project Table 4 1 PV Credit Calculation Factors Climate Zone PV Generation Rate Max PV Cooling Credits of kTDV kWdc Standard Design Cooling kTDV ft2 09 30269 13 10 30342 15 11 29791 18 12 29556 17 13 29676 17 14 31969 16 15 29536 19 The software calculates the solar credit which is reported as a Special Feature on the CF1R Systems must meet the eligibility criteria specified in Residential Appendix RA4 6 1 4 3 1 6 Analysis Report The default report type is Building Summary csv 4 3 1 7 Run Scope The two types of projects are Newly Constructed or Addition and or Alteration NOTE for addition alone analysis select Newly Constructed check Addition Alone and enter the Fraction of a dwelling unit Addition Area Existing Addition Fraction 4 4 Building The Building tab see Figure 4 3 is used to provide basic information about the building Figure 4 3 Building Information Project Analysis Building Dwelling Units Lighting Appliances IAQ Cool Vent Building Description 2100 ft2 CEC Prototype with tile roof Air Leakage Status New y Air Leakage 5 ACH 50Pa Insul Construction Quality Standard x M Perform Multiple Orientation Analysis Single Family Multi family jw Natural Gas is available at the site Number of Bedrooms 3 Zonal C
156. ribution system details occur within a given zone each system and the conditioned space it serves may be modeled in detail separately or the systems may be modeled as one large system When modeled as one system assume the worst case conditions When modeling a multi story building the computer model already assumes that some ductwork is between floors and inside the conditioned space 8 16 CBECC User Manual Mechanical Systems Figure 8 10 Distribution System Data Distribution System Data Currently Active Distribution System Attic Default X Name Attic Default Type Has Bypass Duct M Use defaults for all inputs below IT Duct Leakage Sealed and tested y Duct Insulation R value 6 0 ei F ft2 h Btu M Verified Duct Design Has Buried Ducts M Has Deeply Buried Ducts 8 4 1 1 Name User defined name 8 4 1 2 Type Indicate the type of duct system location or no ducts see Table 8 5 Table 8 6 summarizes the duct conditions that require HERS verification including sealed and tested ducts which are a mandatory requirement Proposed HVAC systems with ducts in the crawl space or a basement must have supply registers within two feet of the floor and show the appropriate locations for the ducts Ducts in crawl space and basement can be verified by the local enforcement agency no HERS verification or duct design 8 4 1 3 Use all distribution system defaults By checking this opti
157. rty Walls For multi family building party walls between conditioned zones you need to check the Different Dwelling Unit on Other Side for each of those walls and floors 5 7 CBECC User Manual Zones 5 5 2 Garage Zone Data Figure 5 5 Garage Zone Data Garage Data Garage Name Garage Area 440 f2 Volume 3950 t3 Bottom 0 67 ft 5 5 2 1 Garage Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 5 5 2 2 Area The area of the garage or unconditioned space in square feet ft 5 5 2 3 Volume Volume of the space in cubic feet ft The program defaults the volume based on the average ceiling height defined for the conditioned zone 5 5 2 4 Bottom Floor elevation or distance above grade of the surface of the floor in feet 5 8 CBECC User Manual Construction Assemblies Chapter 6 Construction Assemblies CBECC Res does not use the assembly U factors from the Reference Appendices Joint Appendix 4 Instead assemblies are created inside the program As you build an assembly the screen displays a U factor and R value only as a guide for the user to see how the assembly compares to the standard design assembly Section 150 1 c Table 150 1 A Package A Model the closest insulation R value without exceeding the product s R value The U factor is not reported on the CF1R Only the insulation R values a
158. rue pipe diameter in inches e Insulation Thickness in The thickness of the insulation in inches Enter none if the pipe is uninsulated e Insulation R value hr ft F Btu The installed R value of the pipe insulation Minimum pipe insulation for hydronic systems is as specified in Section 150 1 8 2 7 Wood Heating When all of the qualifications for the wood heat exceptional method are met see Residential Compliance Manual Section 4 7 7 the heating system which includes any back up heating system receives neither a penalty nor a credit A hypothetical heating system that meets Package A is modeled The wood heater and its back up system are modeled as a 78 AFUE central furnace with sealed and tested ducts located in the attic with an R value equivalent to Package A select Use all distribution system defaults 8 2 8 Electric Heat Notyetimplemented Electric resistance heat is modeled with a default efficiency of 3 413 an HSPF of 3 443 Electric radiant heat is modeled with an HSPE ot 3 55 8 2 9 Non central Heating Because the minimum appliance efficiency standard for wall furnaces floor furnaces and heaters is based on size and ranges from an AFUE of 59 to 74 it is important to ge an E EE Af specific d tails about the proposed heating equipment are Ee see Residential Compliance Manual Section 4 2 1 for the minimum standard by type and capacity sethatan appropriate efficieney canbemodele
159. s Currently Active Window Bedr1 Window Name Bedr1 Belongs to Exterior Wall BackWal y Surface Status Altered y Verify Existing Window Window Type New Oper sl Specification Method Overall Window Area y r Window Area 40 0 f2 NFRC U factor 0 300 Btuh ft2 F Solar Ht Gain Coef 0 180 Exterior Shade Insect Screen default y 10 5 1 Radiant Barrier Current software limitations do not allow modeling multiple radiant barrier conditions such as a radiant barrier in an addition but not in the existing attic radiant barrier that is only in an addition as part of an existing plus addition analysis What can be modeled is a radiant barrier in an addition alone or if an entire attic is being altered to include radiant barrier 10 5 CBECC User Manual Additions and Alterations Figure 10 6 Altered HVAC and DHW Zone Data Currently Active Zone House Name House Type Conditioned z HVAC Sys Status Altered M Verify Existing System RATT BE Altered HVAC Sys HVAC new gt Stores ER Existing HVAC Sys Old HVAC Ceiling Height 8 0 ft SA DHW Sys 1 Status Altered M Werify Existing DHW Sys 1 9 0 Floor to flog d Altered DHW Sys 1 DHW Tankless y i 2 0 Bot n A Existing DHW Sys 1 DHW old y Win Head Height 67 ft DHW Sys 2 Status New E New DH System 2 none M 10 5 2 HVAC First determine if an existing system will be extended t
160. s vary in the components they display depending on which folder is selected 2 5 CBECC User Manual Getting Started 2 5 3 Rapid Editing The tree control can be used to move and copy components or groups of components To move a component just drag and drop If an association is not allowed the program will prevent the move To copy a component select the component copy and paste It is advisable to rename copied components to maintain readability Whenever parents components are moved copied or deleted child components are included Components shown on the tree can be moved using a drag and drop technique provided it results in a compatible parent child relationship For example you can drag a window onto a different wall but not vice versa A set of right click edit commands can be used with the tree control These are described above in Section 2 5 Double clicking on any component on the tree opens its input dialog window 2 6 Input Dialog Windows The attributes of each building component can be edited by opening the input dialog window for the component The dialog can be opened by double clicking on the component on the tree control using the edit option on the right mouse menu or using the edit component option on the edit menu The tree control does not appear until you have created a project description or loaded an existing project file Ctrl 0 2 7 Background Colors The following background color convention is
161. shown in Figure 7 3 Because the orientation is entered for cathedral ceilings the ceiling will be modeled in multiple entries with a typical cathedral ceiling having two or more parts e g left and right Figure 7 3 Cathedral Ceiling Cathedral Ceiling Data Currently Active Ceiling Cathedral Ceiling 1 gt Ceiling Name Cathedral Ceiling 1 Belongs to Zone Conditioned E Surface Status New El Construction R30 Cathedral Ceiling E Ceiling Area 200 f2 Roof Rise 5 xin12 Orientation Left z Solar Reflectance 0 1 IR Emittance 0 85 7 2 2 1 Ceiling Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 7 2 2 2 Belongs to Zone Select any appropriate zone already included in the building model When copying components of one zone to another this field automatically changes 7 2 2 3 Construction If no appropriate construction assembly is available right click and pick create discussed in depth in Chapter 6 Construction Assemblies 7 2 2 4 Ceiling Area Area of the ceiling in square feet 7 2 2 5 Roof Rise Specify the roof rise or roof pitch which is the number of feet the roof rises in a span of 12 feet eg shown on plans as 4 12 or 4 feet in 12 feet If there are multiple pitches you can enter the roof rise of the largest area of roof 7 3 CBECC User Manual Building Envelope 7 2 2 6 Orientat
162. tem 1 System Type Heat Pump Heating and Cooling System gt Area Served 2 100 1 story Heat Pump s 1 Unique Ht Pump Unit Types Heat Pump JAWHeatPump El Count 1 F Ducted Ht Pump s 1 AirToWaterHeatPump unit s 947 COP 3 0 Cap 30 000 Btuh I 11 7 EER M System Heats DHW DHW Inputs 590AWHP 1 Story Example Rev 11 Je DHW Heating Equipment Data Tank Volume 50 gal Distribution nonducted y Insul R value 12 F A2 h Btu Ambient Conditions Unconditioned Fan HVAC Fan 1 y activate CFI cool Help Done 8 24 Ground Source Heat Pump There is no current method for modeling ground source heat pumps to accurately represent this feature which uses the earth as a source of energy for heating and as a heat sink for energy when cooling If this system type is being used the mandatory efficiencies for ground water source heat 8 10 CBECC User Manual Mechanical Systems pumpsareaminhimum Coefficient of Performance COP for heating and EER for cooling are entered as well as the capacity The system is simulated as a standard system The heating effieieney COP from either Energy Commission or AHRI directory see Section 8 2 1 3 is converted to an HSPF For cooling efficiency the EER may be modeled_asthe SEER or the EER may be modeled as both the SEER and a HERS verified EER 8 2 5 Hydronic Heating Whether the heating system is hydronic or combined hydr
163. ter the default value from standards Section 110 6 Table 110 6 A 7 3 1 12 Solar Heat Gain Coefficient Solar Heat Gain Coefficient SHGC from NFRC for the fenestration product www nfrc org Alternatively enter the default value from standards Section 110 6 Table 110 6 B 7 3 1 13 Source of U factor SHGC The three valid sources are NFRC default or Alternate Default Fenestration Procedure ADFP A rarely used provision in the standards is for unrated site built fenestration which requires use of Reference Appendix NA6 to calculate both the U factor and SHGC Whichever source is used the standards require a temporary label on every window See References Appendices CEC 400 20012 005 p NA6 1 through 6 5 for further information and responsibilities associated with this calculation procedure 7 3 1 14 Exterior Shade Default bug screens for windows none for skylights 7 3 2 Window Overhang Under the Window Overhang tab see Figure 7 9 enter the overhang dimensions and position 7 3 2 1 Depth Distance the overhang projects out from the wall in feet 7 3 2 2 Distance Up The distance as viewed from elevations from the top of the window to the bottom of the overhang in feet 7 3 2 3 Extends Left Distance in feet the overhang extends from the left edge of the window to the end of the overhang 7 3 2 4 Extends Right Distance in feet the overhang extends from the right edge of the window to the end of
164. tering a water heater define the altered specifications If existing conditions were verified check the box and include the specifications of the existing equipment If the distribution system is being altered and the existing conditions are verified set the dwelling unit distribution type to non compliant installation distribution multiplier or other appropriate value see Section 9 3 10 7 CBECC User Manual Additions and Alterations If adding a water heater define both the existing water heater in the existing zone and the added water heater in the addition zone 10 5 4 Mechanical Ventilation Alterations and additions of 1 000 square feet or less are not required to meet the mechanical ventilation requirements of Section 150 0 0 10 5 5 Ventilation Cooling Whole House Fan Alterations and additions of 1 000 square feet or less are not required to meet the requirements of 150 1 c 12 which is part of the standard design in climate zones 8 14 If the new conditioned floor area does not exceed 1 000 square feet there will be no energy penalty for not installing a whole house fan or other ventilation cooling device 10 8 CBECC User Manual INDEX 2013 standards effective date 1 1 ACIDO iaa 4 5 Additional aiii a 10 1 Addiponialteratton 10 1 NA 10 4 Deleted surfaces A 10 4 Existing building 0 0 0 eeeeteeeeeenneeeeeeees 10 2 Existing HVAC unta tiara 10 6 ek 10 6 Radiant Baier 10 5 Replacing HVAC n se 10
165. that the zone on the other side is modeled see Figure 7 4 Figure 7 4 Party Wall Interior Wall Data Currently Active Wall Int Wall xl Interior Wall Name Int Wall Belongs to Zone Conditioned a Iw Is a Party Surface M Zone on Other Side Is Modeled Zone on Other Side Conditioned 2 B Construction Interior R O gt Wall Area 400 ft2 7 4 CBECC User Manual Building Envelope 7 2 5 Walls Add the walls in a clockwise or counter clockwise direction and in the order you would like them to appear because it is not possible to change the order See Figure 7 5 Figure 7 5 Exterior Wall Exterior Wall Data Currently Active Wall Front MY Exterior Wall Name Front Belongs to Zone Conditioned Z Surface Status New Construction Exterior Wall Cons Wall Area 270 0 f2 Wall Tilt 90 0 deg Orientation Front MM 7 2 5 1 Exterior Wall Name If the building plans use a unique tag or ID use that for the name otherwise a simple name such as front or front wall is sufficient Each name within a zone or on a surface must be unique 7 2 5 2 Belongs to Zone The name of the zone in which the wall is being modeled 7 2 5 3 Surface Status Surface status is used to identify an existing altered or new wall Any surfaces that are part of a new building or addition are new 7 2 5 4 Construction Pick one of the construction assemblies or create a new construction assembly see Sectio
166. the overhang 7 9 CBECC User Manual Building Envelope Figure 7 9 Overhang Window Data Window Overhang Window Fins Currently Active Window WinFrontLe D Window Overhang Dimensions Position Depth 1 00 ft Extends Left 3 00 ft Flap Hr 0 40 ft Dist Up 1 33 ft Extends Right 26 00 ft 7 3 2 5 Flap Height Default 0 feet If the overhang has a flap that extends lower than the bottom of the overhang thereby increasing the potential shading of the overhang this added length is modeled as the flap height 7 3 3 Window Fins A window fin is a building feature that provides shading benefit to a window for example a recessed entry area Figure 7 10 shows inputs found in the Window Fins tab 7 3 3 1 Left Fin Depth Depth in feet of the wall fin to the left of the window that provides shading to the window 7 3 3 2 Distance Left Distance in feet from the left edge of the window to the left fin 7 3 3 3 Top Up Distance in feet from the top of the window to the top of the wall fin 7 3 3 4 Bottom Up Distance in feet from the bottom of the window to the bottom of the left fin 7 10 CBECC User Manual Building Envelope Figure 7 10 Window Fin Window Data Window Overhang Window Fins Currently Active Window WinFrontLeft gt Window Fin Dimensions amp Positions Depth p Depth Top Up Top Up Dist L Bot Up Left Fin Right Fin Left Fin R
167. the software will model the duct system with no leakage and no conduction losses Systems that have all ducts entirely in conditioned space are reported on the compliance documents and this is verified by measurements showing duct leakage to outside conditions is equal to or less than 25 CFM when measured in accordance with Reference Appendices Residential Appendix RA3 8 4 4 Buried Ducts Ducts partly or completely buried under blown attic insulation also meeting the requirements for verified quality insulation installation verified duct design and duct leakage testing may take credit for increased effective duct insulation using the HERS verified credit for buried ducts Additional details regarding the duct design and the inspection process can be found in Reference Appendices Residential Appendix RA3 1 4 and the Residential Compliance Manual Section 4 4 3 The duct design shall identify the segments of the duct that meet the requirements for being buried ducts on the ceiling buried ducts and ducts that are enclosed in a lowered ceiling and completely covered by ceiling insulation deeply buried ducts and these are input separately from supply and return ducts that are not buried DuetstobebBuried ducts shall have a minimum of R 4 26 0 duct insulation prior to being buried The ceiling must be level with at least 6 inches of space between the outer jacket of the installed duct and the roof sheathing above 8 4 4 1
168. the edit menu contains several commands for editing building descriptions They are e Edit component e Create component e Delete component These menus allow you to edit all building components including components that are not displayed on the tree control Use this method to edit components like schedules and performance curves 2 2 3 Ruleset CBECC Res 2013 is designed to support multiple rulesets that implement the requirements in different codes When enabled the ruleset menu will allow switching to a different compliance ruleset Typically changing to a different code requires changes to inputs Users will need to pay special attention to instructions for performing accurate analysis under a different ruleset 2 2 4 View The view menu enables you to toggle on and off the display of the tool bar at the top of the screen and the status bar at the bottom of the screen 2 2 5 Tools The tools menu contains the following options e Check Building Database e Generate HVAC Equipment Report Records documentation for installer and HERS Rater e Generate DHW Equipment Report Records documentation for installer and HERS Rater e Generate IAQ Ventilation Report Records documentation for installer and HERS Rater e Building Summary Report input model opens a csv file in Excel e Building Summary Report proposed standard opens two csv files in Excel one standard and one proposed e Perform Analysis same as short cut
169. ther key technical staff contributors included Payam Bozorgchami Tav Commins Todd Ferris Gary Flamm Rob Hudler Alan Marshall Nelson Pe a Bill Pennington Maziar Shirakh PE and the Energy Commission s Web Team Dave Ashuckian Deputy Director of the Efficiency and Renewable Energy Division provided policy guidance to the Staff Pippin Brehler and Michael Levy provided legal counsel to the staff Special thanks to our key consultants including Scott Criswell Bruce Wilcox Ken Nittler Robert Scott and Jennifer Roberts ABSTRACT The 2013 Building Energy Efficiency Standards for Low Rise Residential Buildings allow compliance by either a prescriptive or performance method Performance compliance uses computer modeling software to trade off efficiency measures For example to allow more windows the designer will specify more efficient windows or to allow more west facing windows they will install a more efficient cooling system Computer performance compliance is typically the most popular compliance method because of the flexibility it provides in the building design The Energy Commission is required by the Warren Alquist Act to provide a public domain compliance program The California Building Energy Code Compliance CBECC Res software is the public domain software that will be certified by the Energy Commission in conformance with the Residential Alternative Calculation Methods ACM Approval Manual which contains the process for
170. ting is up to the local building official 6 3 CBECC User Manual Construction Assemblies 6 5 3 Ceiling Below Attic The ceiling is defined as the interior upper surface of a space separating it from an attic plenum indirectly or directly conditioned space or the roof assembly which has a slope less than 60 degrees from horizontal definition from Reference Appendices 6 5 4 Knee Wall A knee wall is a sidewall separating conditioned space from attic space under a pitched roof Knee walls are modeled in CBECC Res as an interior wall although actually a demising surface and are insulated as an exterior wall 6 5 5 Low Slope Roof A low slope roof has a ratio of rise to run or pitch of 2 in 12 or less lt 9 5 degrees from the horizontal Although a specific value is not mandatory the standard design for a low slope roof in climate zones 13 and 15 is a 0 63 aged solar reflectance If the roof membrane has a mass of at least 25 lb ft or the roof area incorporates integrated solar collectors the roof may assume the standard design value for solar reflectance exceptions to Section 150 1 c 11 6 5 6 Radiant Barrier A radiant barrier installed below the roof decking reduces radiant heat to any ducts and insulation below While not a mandatory requirement the standard design used to establish a building s energy budget has a radiant barrier in climate zones 2 15 Installation requirements for a radiant barrier see CF2R form
171. tion 8 9 1 5 8 3 2 No Cooling When no cooling system is installed in a dwelling create a cooling system using the type NoCooling The system is modeled in a way that results in no credit and no penalty The software sets the default cooling system to a split system air conditioner that exactly meets Package A for the efficiency airflow and refrigerant charge NOTE The duct system should never be set to none or non ducted It is either the same as the heating system ducts if any or Package A whichever is better 8 3 3 Non central Cooling Until the manufacturers of non typical cooling technologies pursue an exceptional method the Energy Commission has determined that there is not enough data about how these systems perform in achieving comfort conditions to simulate their efficiency Model the proposed system however the systems will be modeled as equivalent to the standard design meaning there is no credit and no 8 15 CBECC User Manual Mechanical Systems penalty Non ducted systems are modeled with the distribution system defined as a distribution system without ducts 8 3 4 Evaporative Cooling Not yet Implemented Specify one of three types of evaporative cooling 1 direct evaporative cooler the most commonly available system type 2 indirect or 3 indirect direct Product specifications and other modeling details are found in the Energy Commission appliance directory for evaporative cooling T
172. tion Data Currently Active Construction Cathedral R30 D Frame R 11 370 Construction Name Cathedral R30 Cavity R 31 931 Can Assign To Cathedral Ceilings D Tuale AU Construction Type Wood Framed Ceiling D Roofing Type fall others z Construction Layers topmost to bottom Cavity Path Frame Path Roofing Light Roof Asphalt Shingle Light Roof Asphalt Shingle Above Deck Insulation no insulation gt no insulation gt Cavity Frame R3 y 2100 24 in 0 0 y Sheathing Insulation no sheathing insul gt nosheathing insul gt Inside Finish Gypsum Board y Gypsum Boara y Winter Design U value 0 035 Btush ft2 F 6 7 3 1 Construction Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 6 7 3 2 Can Assign To This is a fixed field To create a new assembly type at the zone level pick create and make the appropriate construction assembly type 6 7 3 3 Construction Type Options are wood framed er built up roof steel framed and SIPs 6 7 3 4 Roofing Type Pick the appropriate roof type as either 1 steep slope roof tile metal tile or wood shakes or 2 all other 6 10 CBECC User Manual Construction Assemblies 6 7 4 Construction Layers 6 7 4 1 Roofing The available types include no attic floor and wood siding sheathing decking 6 7 4 2 Above Deck Insulation If
173. tion R value for Blown Fiberglass Insulation R 30 R 13 R 13 R 13 R 9 R 9 R 4 2 R 4 2 R 4 2 R 4 2 R 38 R 25 R 25 R 25 R 13 R 13 R 9 R 9 R 4 2 R 4 2 R 40 R 25 R 25 R 25 R 25 R 13 R 13 R 9 R 9 R 4 2 R 43 R 25 R 25 R 25 R 25 R 25 R 13 R 9 R 9 R 4 2 R 49 R 25 R 25 R 25 R 25 R 25 R 25 R 13 R 13 R 9 R 60 R 25 R 25 R 25 R 25 R 25 R 25 R 25 R 25 R 13 Effective Duct Insulation R value for Blown Cellulose Insulation R 30 R 9 R 4 2 R 4 2 R 4 2 R 4 2 R 4 2 R 4 2 R 4 2 R 4 2 R 38 R 15 R 15 R 9 R 9 R 4 2 R 4 2 R 4 2 R 4 2 R 4 2 R 40 R 15 R 15 R 15 R 9 R 9 R 4 2 R 4 2 R 4 2 R 4 2 R 43 R 15 R 15 R 15 R 15 R 9 R 4 2 R 4 2 R 4 2 R 4 2 R 49 R 31 R 31 R 15 R 15 R 15 R 9 R 9 R 4 2 R 4 2 R 60 R 31 R 31 R 31 R 31 R 31 R 15 R 15 R 9 R 9 8 5 HVAC Fan System The HVAC fan system moves air for the air conditioning and heating systems 8 21 CBECC User Manual Mechanical Systems Figure 8 13 HVAC Fan Fan Data Currently Active Fan Central Fan E Name Central Fan Type Single Speed PSC Furnace Fan gt W CFM Cooling 8 5 1 1 Name User defined name 8 5 1 2 Type Default single speed furnace fan 8 5 1 3 Watts CFM Cooling 0 580 WICFM The mandatory requirement in Section 150 0 m 13 is for an air handling unit fan efficacy less than or equal to 0 58 Watts CFM as verified by a HERS rater The alternative to HERS verification of 0 58 Watts CFM is HERS verification of a return duct design th
174. tomatically deliver filtered outdoor air to occupant set comfort levels when outdoor conditions warrant the use of ventilation 4 7 1 2 Zone Assign to any conditioned zone that has a ceiling below an attic Since a whole house fan uses attic venting to exhaust the hot air an attic is required for this measure 4 9 CBECC User Manual Zones Chapter 5 Zones 5 1 Multiple Conditioned Zones Decide in advance how many zones are needed to adequately define a building A zone is typically an area with specific details that require it to be modeled separately from another area a more complex building model does not necessarily yield better compliance results Some cases where multiple zones are required are e When taking credit for zonal control with at least one living and one sleeping zone e Spaces are served by different types of heating cooling equipment such as a heat pump and a gas furnace e Different duct conditions or locations e A radiant barrier in part of an attic and not in another part The simplest approach is to model the worst case in a single zone but a more detailed model may be needed to achieve compliance NOTE Different types of water heating can be modeled within the same zone In addition to the conditioned zones attics garages attached unconditioned spaces and crawl spaces zones must be modeled 5 2 Attic The compliance software models attics as a separate thermal zone and inclu
175. two inches on all sides to account for a frame and model that as window see Section 7 3 1 The opaque area of the door is the total door area minus the calculated glass area For doors with 50 percent or more glass area see Section 7 3 4 The standard design building has the same area of opaque door as the proposed design building 7 2 6 1 Door Name User defined name If the plans use a door schedule or unique identifier that identifier can be used for the door name Each surface must have a unique name 7 2 6 2 Belongs to Exterior Wall Default is the existing wall When copying window data to another zone the program changes this to the new exterior wall 7 6 CBECC User Manual Building Envelope 7 2 6 3 Door Status The default is new for new construction or if part of an addition Other options include altered and existing 7 2 6 4 Door Area Enter the door area in square feet 7 2 6 5 U factor Default value is 0 50 for opaque doors 1 00 for the large garage doors roll up or wood Other values allowed are from Joint Appendix 4 Table 4 5 1 only 7 2 7 Garage Door When modeling a garage zone the large garage doors metal roll up or wood are modeled with a 1 00 U factor 7 3 Windows The 2013 standards establish a maximum weighted average U factor of 0 58 Section 150 0 q for fenestration including skylights The exception allows the greatest of 10 ft or 0 5 percent of the conditioned floor area to exceed the
176. uired if the field is applicable to your project Input is optional If applicable to your project you may enter a value a default value is always acceptable Input is Critical Default You may overwrite the data with a more appropriate entry You must be prepared to provide documentation substantiating the input value Field is not editable The data in this field cannot be edited either because it is defined by the compliance ruleset is not applicable to the selected compliance ruleset or is an intermediate calculated parameter Navigation input The purpose of the selected field is to enable you to select a component for editing without having to exit the current component and choose the next component from the tree Table 2 2 Data Source Explanations TEXT DISPLAYED EXPLANATION No field selected No building data field is currently selected Value from user The data shown is defined by the user either by direct input or through a wizard selection Value from simulation The data shown is defined by an energy simulation Value undefined No data is defined for the field Value from program The data in this field is defined by the program either to implement requirements and procedures specified in the standards or to conform to building energy modeling conventions 2 9 Defining New Components From the main program screen or at any point where you would like to create a component under a
177. ulti family building you will indicate the capacity for the defined system and specify the number of units of that given capacity assigned to the zone see Section 8 1 1 5 8 2 2 5 Capacity 17 Degrees F Required value from the AHRI Certified Products Directory http www ahridirectory org 8 6 CBECC User Manual Mechanical Systems 8 2 2 6 Cooling Performance SEER Cooling equipment Seasonal Energy Efficiency Ratio SEER For equipment tested only with an EER enter the EER as the SEER When a value higher than 13 SEER for Compliance 2014 is modeled it triggers a HERS Verification of High SEER With Compliance 2015 the minimum efficiency requirement of the Appliance Efficiency Standards changes to 14 SEER and only when an SEER higher than 14 is modeled is a HERS Verification of High SEER triggered Efficiency information can be obtained from an advanced search of the Energy Commission s appliance directories http www appliances energy ca gov or from the AHRI Certified Products Directory http www ahridirectory org 8 2 2 7 EER Cooling equipment Energy Efficiency Ratio EER When an EER value of higher than 11 3 is modeled with Compliance 2014 or an EER higher than 11 7 is modeled with Compliance 2015 it triggers a HERS verification For equipment with an EER rating only e g room air conditioner enter the EER as the SEER Because the EER depends on the specific combination of coil and condens
178. unit v DI kWhi yr M Clothes washer M Clothes dryer Vv Conditioned fuel Natural gas v IAQ Indoor Air Quality Ventilation Model as Default Minimum IAQ Fan gt Minimum IAQ Ventilation 38 4 CFM unit total of 76 8 CFM Zone Conditioned y Each dwelling unit type must be separately identified A dwelling unit type will have the same floor area number of bedrooms appliances only the presence of clothes washer and dryer can be shut off the same IAQ ventilation system type and be located on the same floor Identify each dwelling unit type and the number of that dwelling unit type that is included in the building or zone see Figure 4 4 4 4 2 Dwelling Unit Details Multi Family 4 4 2 1 Unit This is a short distinguishing piece of information to describe the dwelling unit 4 7 CBECC User Manual Project 4 4 2 2 Count This input is to specify how many of this dwelling unit type are included in this zone In the above figure the bottom floor has 780 x 4 3120 ft 4 4 23 Bedrooms Number of bedrooms in the dwelling unit used to establish the minimum ventilation requirements 4 4 2 4 Zone amp Area Unit The zone name is entered here Multi family buildings that have floors between dwelling units must either define each floor as a separate zone or each dwelling unit as a separate zone In this example each floor is defined as a separate zone with four dwelling units per zone 4425 F The number of squar
179. used in displaying data on the dialogs e White background available for user input e Gray background not user editable 2 8 Status Bar The status bar at the bottom of the screen provides useful information about each input field There are three panes on the status bar that provide context sensitive information This same information is displayed in the tool tips if you allow the mouse to linger over an input field 1 Input Description Pane Concise descriptions of the selected input field are displayed at the far left of the status bar 2 Input Classification Pane The next pane to the right on the status bar displays a set of labels that indicates whether an input is required optional or unavailable for input see Table 2 1 3 Data Source Pane The pane at the far right of the status bar displays a set of labels that identify the source of the information if any contained in the field This distinguishes 2 6 CBECC User Manual Getting Started between information that is dictated by the compliance checking process and the information entered for which you are responsible The data source labels are explained in Table 2 2 Table 2 1 Input Classification Explanations TEXT DISPLAYED EXPLANATION No field selected No building data field is currently selected Input is compulsory Data is required the program cannot perform a compliance analysis without this input Input is required Data is req
180. vation Height above grade or depth of crawl space in feet For multi story buildings this value must match the input bottom in modeled in the zone data 7 5 2 Floor Over Garage A raised floor over a garage or over another conditioned space is modeled as an interior floor but with an unconditioned zone on the other side Figure 7 13 Garage or Interior Floor Interior Floor Data Currently Active Floor FloorOverGarage y Interior Floor Name FloorOverGarage Belongs to Zone Conditioned El Surface Status New E Construction FIr Over Gar El Outside Garage El Floor Area 200 f2 Floor Elevation 10 7 ft Figure 7 14 Multi Family Interior Floor Interior Floor Data Currently Active Floor Interior Floor 1 y Interior Floor Name Interior Floor 1 Belongs to Zone Conditioned 2 gt Surface Status New F Construction Interior Floor bd Outside Conditioned DI Different Dwelling Unit on Other Side Floor rea 3 480 2 Floor Elevation 97 ft 7 5 2 1 Interior Floor Name User defined name If the building plans have a unique identifier that should be used here to assist in the plan checking and inspection processes 7 14 CBECC User Manual Building Envelope 7 5 2 2 Belongs to Zone Select any appropriate zone already included in the building model When copying components of one zone to another this field automatically changes 7 5 2 3 Surface Status S
181. wo 3 0 3 0 windows and a 5 0 6 8 sliding glass door with insulated glazing To model this home 1 Download install and start the CBECC Res program The program can be downloaded from www bwilcox com BEES BEES html At the opening main screen dialog box activate the button Start with a Blank Project and click lt OK gt Right click on the Press Alt F text line Choose create project from the drop down menu and enter the project name Simple House and click lt OK gt Next you will pick the climate zone Select Zone 12 Sacramento You can select any climate zone however program defaults are based on Package A so your results for this tutorial may be different You will now be at the Project tab of the building model data The name Simple House is filled in and becomes the default name for the input file Enter the address 1450 20th St Sacramento CA 95811 lt Select gt CZ12 Sacramento Rather than clicking OK which will take you out of the building model data click the Analysis tab to enter a run title which is a field for your own notes or project information such as a compliance variable e g w tankless water heater The information will appear on the CF1R as Calculation Description 3 2 CBECC User Manual Tutorial 6 10 11 12 13 Check the box to Generate Report s M PDF note the Full XML box generates the file that will get upl
182. xt rior Mel eeschtes vir that iA atc En 6 16 6 9 E a e o 6 16 6 9 1 Raised Floor Construction Data 6 17 6 9 2 Raised Floor Construction Layers top to bottom 6 18 6 9 3 Floor Over Garage EE 6 18 6 9 4 Window e KETTEN 6 19 Chapter7 Building Envel e a E cea sh Ta aar e add 7 1 7 1 Orientation ease nce at A ee 7 1 7 2 RE En EE 7 2 7 2 1 Ceiling below cocina ii ide ace 7 2 7 2 2 Cathedral Celinda da it A ia 7 3 7 2 3 Knee Walls Dos e oe EE EE 7 4 7 2 4 Party Walls in Multi Family 00 0 0 eecceeeeeseeeeeeeeneeeeeeeeee nn norc cnn nr cnn cnn 7 4 7 2 5 VT 7 5 7 2 6 e ERC 7 6 7 2 7 Garage TTT 7 7 7 3 WINGOWS TT 7 7 7 3 1 Windows Datars ici td a 7 7 7 3 2 Window Overhang ege ee ege te yi A eee ei We AD 7 9 7 3 3 Window FIIS aiia i a e Sie vente i een ee eed 7 10 7 3 4 Glass Ree EE E EE 7 11 7 4 E EE 7 12 75 Ralsed Flo ictericia tia tala dalla ic 7 13 7 5 1 Floor over Crawl Space c cccccccesscecseeeceeeeeeaeeeeneeceeeeceaeseeaaesseneeseaeeeeaaesgeaeeseeeeesaeeeeaeeeeneeee 7 13 7 5 2 Floor Over Garage EE 7 14 7 5 3 Foor Over EX EE 7 15 7 6 Sail A hen epeceteeantebedeehns Pav chveareecahl 7 17 7 7 Exterior Garage Surfaces ccccccceceecceceeeceeaeceeneeeeeeecaaeeeeaaeseeneesaeeecaaeseeaaeseaeeeseaeeesaaeseeaeesseneesaees 7 18 Chapter 8 Mechanical Systemsin a etenee aeaa a oe a aeaaea aee aaa raea Ee a Oaa OSEA aa aeaea iaaa aaah 8 1 8 1 HVAC System Datel EE 8 1 8 1 2 Zonal Control umi bebiendo ee 8 3 8 1 3 Multipl
183. y no insulation SheathingInsulation no sheathing insul Inside Finish Gypsum Board Inside Finish Gypsum Board Sheathing Insulation no sheathing insul Cavity R 15 Sheathing Insulation no sheathing insul Other Side Finish Gypsum Board Roofing 10 PSF RoofTile Above Deck Insulation no insulation Roof Deck Wood Siding sheathing decking Cavity no insulation Inside Finish select inside finish Attic Floor no attic floor Cavity R 38 SheathingInsulation no sheathing insul Inside Finish Gypsum Board Inside Finish Gypsum Board Sheathing Insulation no sheathing insul Cavity R 15 Sheathing Insulation no sheathing insul Exterior Finish R4 Synthetic Stucco Inside Finish Gypsum Board Sheathing Insulation no sheathing insul Cavity no insulation vertical Sheathing Insulation no sheathing insul Exterior Finish 3 Coat Stucco Tilt deg HERS Provider Report Generated at 5 7 2014 11 49 18 AM CERTIFICATE OF COMPLIANCE RESIDENTIAL PERFORMANCE COMPLIANCE METHOD CF1R PRF 01 Calculation Date Time 11 47 Wed May 07 Project Name 1 Story Example 2014 Calculation Description 1 Story Example Rev 12 Input File Name Exampl12 ribd Page 6 of 9 SLAB FLOORS a e el Ae remar Ego ms reas Dopin Corera Facto Zeg 40 44 4 ee E EC BUILDING ENVELOPE HERS VERIFICATION ES ASS VA AAA TE IP NE O Quality Insulation Installation Qll Quality
184. yExample13 ribd Based on the CEC 2700 ft two story prototype with asphalt shingle roof this file has window dimension inputs Compliance 2015 and a Photovoltaic power compliance credit 4 2Story2ZoneExample13 ribd Same as above but zoned 1st and 2nd story each with its own HVAC system 5 MFexample13 ribd An eight unit two story multi family 6960 ft two story building with each story as a separate zone with four dwelling units in each zone served by individual water heaters Not every input field will be discussed in this tutorial but every input has a description in the appropriate chapter Use the Table of Contents or the Index to find specific information Additional information may also be found in the 2013 Residential Alternative Calculation Method ACM Reference Manual which discusses how the standard design is determined which may provide insight on the compliance results TIP As you are progress through the tutorial look around each of the screens and fields so you get an idea where changes can be made when you are working on a project 3 2 Simple House Example The house pictured in Figure 3 1 has a 30 ft by 20 ft living area 8 ft ceilings with an attic above and a slab on grade floor CBECC User Manual Tutorial Figure 3 1 Simple House Example On the south fa ade front is a single 3 0 x 6 8 front door The east right has a 3 0 3 0 window and north back facades has t

CBECC-Res USER MANUAL FOR CALIFORNIA BUILDING

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