Lifebreath CAF-02-MB User's Manual
Contents
1. It should be noted that problems have been observed when using the side tappings on certain water heaters therefore it is strongly recommended to use the top water tappings as indicated in Figure 1 to minimize thermal siphoning and related issues For further information please contact Technical Support 519 457 1904 Function amp Controls Automatic Self Test Approximate duration 1 5 minutes Unit will perform a self test each time power is first applied Unit will cycle blower through all speeds holding each for 15 seconds Remainder of test is for circuit board tests after which normal operation will resume Basic Functions Thermostat fan switch will control low speed fan operation Call for heating high speed Call for cooling high speed Micro Processor Board Standard 24 Volt Thermostat Connection Thermostats are not available through Nutech Note Power stealing BH a thermostats are not 5 compatible za Mechanical thermostats are not recommended a 5 Cooling anticipators need to be disabled if used Call technical support 519 457 1904 for more information z a 23 ON WOO WOO ON 2 2 LIOEIUOO Optional Digital Electronic Timer DET Part 99 104 Connect up to 4 maximum Boosts uni2. xd LM C NN 3 4 5 Dimensions amp Clearances M odel CAF U42A 8 P16 Side Front in Voltage 120 VAC 60 Hz Hp 1 3 12 5 total 8 7 i Latches To 122 25 dei Water 1 2 Copper Soldered p NA Ventilation Supply _ Connections Connection TU Air Inlet Airflow High 25 in wg 1888 CFM Ventilation Exhaust 47 5 5 in wg 1589 r3 SUB SS Air utet Ventilation 100 140 CFM Airflow oe Effectiveness 70 I SE Aluminum Core 295 14 Return Air BI Secti Total Efficiency 50 Enthalpic Core Note Ventilation portsand ____ ___________ _ _________ Y Ner Weight 150 Ibs return plenum opening i 29 5 gt 19 Shipping Weight 165 Ibs available off either side of cabinet units conform to CSA and UL Standards SERVICE CLEARANCE 1 SERVICE CLEARANCE 3 Options Warranty 99 186 Weatherhoods Two 6 c w PIS 1 4 mesh screen Units carry a lifetime warranty on the heat 99 130W Remote Wall Mount Dehumidistat recovery aluminum core a five year warranty Control 24 VAC only on the energy recovery enthalpic core and a 99 RSK6 6 back draft damper five year replacement parts warranty on all 99 104 DET Digital Electronic Timer components 0212 19 Specifications Model CAF U 00 36 P16 Core V
3. NOI sa per cs 49014 1 A j euuoN DIN uedo O N MBE MOTTIAMIVIA rac Hc m DOCCE cac TEN E xv 24 5 107 Pai D e I 105095 s pew ueg IH ueg 8 LU TERRE e l ci Movla E os D x9v18 ama 12161 1 61 91418 E ITI Lass 27 MOTISAMOVIE NYL UO UJ S10120uu02 K quo 1710A 01 X9JO N ECMW 11v AV2 W23 43 511 McCormick Blvd 270 Regency Ridge Suite 210 London Ontario N5W 4C8 Dayton Ohio 45459 T 519 457 1904 T 937 439 6676 BRANDS INC F 519 457 1676 F 937 439 6685 9001 Email nutech lifebreath com Website www lifebreath com REGISTERED 7
4. i7 ee ee ene ae eee m 35 Work ili e 36 41 Wiring R a RE 42 43 Introduction Congratulations on your selection of the LIFEBREATH Clean Air Furnace CAF This is a very advanced unit that combines the outstanding efficiency and economy of the water heater airhandler concept plus the tremendous health benefits of year round fresh air ventilation in every room of your house With the addition of LIFEBREATH Turbulent Flow Precipitator TFP Air Cleaner optional you will have the ultimate in comfort and healthy indoor air quality You will notice that the heated air in your home feels more comfortable than air heated by a conventional furnace One reason for this is that LIFEBREATH s hydronically heated air is uniform and temperate no short blasts of hot air or hot and cold temperature spikes In this regard the air flowing from your hot air vents will not feel as hot to the touch as air from a conventional furnace With a high efficiency adequately sized hot water heater boiler you will always have plenty of hot water for showers and baths washing dishes and clothes and all other normal domestic hot water needs If there is an unusually high demand for hot water such as filling a large hot tub than all you need to do is allow more time for the task so the water heater boiler can keep up to its job of providing hot water for the heating system as well as other
5. Whirl Pool 60 tub cap from manufacturer Personal Use 3 Shampooing Hair 3 Clothes Washer hot warm warm warm warm cold Hand Dish Washing Automatic Dish Washer Food Preparation mK mK KL Other TOTAL min first hr rating transfer to C 2 38 PART D PROVING REQUIRED WATER FLOW D 1 Effective Length Calculation PUMP Fitting Total EL D 2 Water Flow Rate US GPM D 3 Max Head Press at Water Flow ft of head from specs D 4 Pressure Drop of Water Coil ft of head D 5 Available Head Press ft of head D 3 D 4 D 6 Total Effective Length eff ft from D 1 D 7 Head Loss 100 ft per 100 ft D 5 x 100 D 6 Measured Actual Length Pipe Diameter Total Effective Length Table D 2 TABLE D 1 EQUIVALENT LENGTHS FOR COPPER PIPE FITTINGS straight pipe in feet FITTING EQUIVALENT FITTING EQUIVALENT LENGTH LENGTH Gate Ball Valve open long sweep 90 elbow Globe Valve open 45 elbow Angle Valve open 180 close return Check Valve open standard tee straight through Balance Valve standard tee 90 turn Standard Elbow contraction or enlargement TABLE D 2 HEAD LOSS PER 100 FEET OF EQUIVALENT LENGTH 1 2 inside diameter 5 8 inside diameter 3 4 inside diameter 1 inside diameter FLOW HEAD LOSS HEAD LOSS HEAD LOSS HEAD LOSS US GPM 100 100
6. 100 N N COL DNA MI 5 j 39 COMMISSIONING OF INTEGRATED COMBO SYSTEM Training Courses and Forms are available from HRAI Skill Tech Academy 1 800 267 2231 Designer Signature Phone Submitted For Owner By Contractor Address Address City City Postal Code Postal Code Phone Phone INSTALLED EQUIPMENT Water Heater make amp model as designed Throttling Valve Air Handler make amp model as designed Anti scalding Valve Cooling Unit make amp model as designed Back Flow Prevention Valve Filter type and size as designed Expansion Tank 2 shut off valves for heating loop Off Season Circulation Controls Check Valve Other Drain Valve 40 Part E SYSTEM START UP Fill Water Heater with water Start Air Handler Set Water Heater at designed temperature 5 Check Circulation Pump Operation Fill Heating Loop with water Check Circulation Fan Operation Purge Circulation Pump 8 Label Water Heater HRV BALANCING Exhaust Air Flow Fresh Air Intake Air Flow Back Draft Damper installed in Stale Air to Outside Duct Part F SYSTEM COMMISSIONING Design Information Information for this section can be found on the Worksheet for Integrated Combo System Design part B Total Heat Loss Btu h Air Handler output Btu h Eff
7. 99 130W Remote Wall Mount Dehumidistat recovery aluminum core a five year warranty Control 24 VAC only on the energy recovery enthalpic core and a 99 RSK6 6 back draft damper five year replacement parts warranty on all 99 104 DET Digital Electronic Timer SPGE SONENN 0211 20 Specifications Model CAF U 00 48 P16 Core Ventilation system has patented aluminum heat recovery core standard or an enthalpic energy recovery core optional for energy efficient ventilation Enthalpic cores are recommended for regions where the temperature does not drop below 25 F 4 C Filters Washable air filters in exhaust and supply air streams of ventilation section 1 pleated in return plenum side Case Prepainted galvanized steel for superior corrosion resistance Dimensions amp Clearances Side CAF U 00 48 P16 4 Voltage 120 VAC 60 Hz 12 1 I Top iu 2225 gt Hp 113 sea i Latches Amps total 7 7 Ventilation Supply Air I I Airflow High Inlet 25 in wg 1888 CFM 19 1725 Supply Air 5 in wg 1589 CFM Ventilation 47 5 Ventilation 100 140 Air Airflow tl EE Effectiveness 70 29 5 RE T Aluminum Core Total Efficiency 50 14 Return Air Blower Section Enthalpic Core Net Weight 132 Ibs Note Ventilation ports and return plenum opening available Shipping Weight 147 Ibs off eithe
8. Airflow High 25 in wg 1350 CFM Y Y 4 Supply Air End 5 in wg 1180 CFM Front Ventilation 100 140 CFM oo 859 we Airflow A h Effectiveness 70 2 22 Aluminum Core 19 14 Return Air eum 19 Blower Section Total Efficiency 50 Air End Enthalpic Core N et Weight 150 Ibs 77 a S ur ne T Shipping Weight 165 Ibs i Service SERVICE CLEARANCE 10 Drain Note All units conform to CSA and UL Standards Options Warranty 99 186 Weatherhoods Two 6 c w m 1 4 mesh screen Units carry a lifetime warranty on the heat 99 130W Remote Wall Mount Dahuimidistat recovery aluminum core a five year warranty Control 24 VAC only on the energy recovery enthalpic core and a 99 RSK6 6 back draft damper five year replacement parts warranty on all WES other components 99 104 DET Digital Electronic Timer 18 0302 25 WG CFM 5 WG Specifications Model CAF U L2A 48 P16 Core Ventilation system has patented aluminum heat recovery core standard or an enthalpic energy recovery core optional for energy efficient ventilation Enthalpic cores are recommended for regions where the temperature does not drop below 25 F 4 C Filters Washable air filters in exhaust and supply air streams of ventilation section 1 pleated in return plenum side Case Prepainted galvanized steel for superior corrosion resistance L2A 48 Coil Output Chart 1000 s of BTUH
9. ting Switch fan to manual at the thermostat so the unit will run at high speed in order to perform the balancing procedure on the ventilation section Refer to Balancing Procedure in this manual Troubleshooting Lack of heat 1 Check that the room thermostat is set to the desired temperature Confirm the units have power and the shut off valves are open Ensure there is power to the unit and that the pump is working If the pump is not working properly it may be stuck Disconnect power and remove screw in center face of the pump Using a screwdriver turn the pump shaft sev eral times to free it from sticking Replace center screw and re connect power If pump still fails to start it may require replacement Confirm that the hot water heater is working and that hot water is entering the Clean Air Furnace Verify that the airflow in and out of the system matches designed specs If airflow is low check for blockage in the filter or some other obstruction Make sure your water heater is sized large enough for heat load of house and for domes tic hot water use Air may still be in the water lines If so re purge the system according to the start up procedure Confirm that the inlet and outlet pipe connec tions are not reversed Ensure that there are no other restrictions in the water lines such as faulty valves or debris Pump is noisy Pumps can become noisy when air remaining in the lines interf
10. P16 Voltage 120 VAC 60 Hz Hp 1 3 Amps total 7 W ater Connections 1 2 Copper Soldered Connection Airflow High 25 in wg 5 in wg 1030 CFM 890 CFM Ventilation Airflow 100 140 CFM Effectiveness Aluminum Core 70 Total Efficiency Enthalpic Core 50 N et W eight 150 Ibs Shipping Weight 165 Ibs Units carry a lifetime warranty on the heat recovery aluminum core a five year warranty on the energy recovery enthalpic core and a five year replacement parts warranty on all other components 13 0212 Specifications Core Model CAF U L4A 36 P16 Ventilation system has patented aluminum heat recovery core standard or an enthalpic energy recovery core optional for energy efficient ventilation Enthalpic cores are recommended for regions where the temperature does not drop below 25 F 4 C Filters return plenum side Case L4A 36 Coil Output Chart 1000 s of BTUH Prepainted galvanized steel for superior corrosion resistance Washable air filters in exhaust and supply air streams of ventilation section 1 pleated in 1180 in 1120 890 675 o 1350 A 1275 e 940 730 3 GPM 4 GPM 5 GPM Dimensions amp Clearances aide Pront sis Model CAFU44A 36 916 Voltage 120 VAC 60 Hz ci i H 1 2 Top
11. Water Heater output Air Handler ESP ins W C Air Flow rate CFM Fan speed Supply Water temp F Return Water temp Supply Air temp F Return Air temp Supply Water Temp Required Supply Air Temperature measured 4 5 Air Handler Output Returned Water Temperature at E1 Condition measured Air Handler Operating CFM Water Temperature Difference F min 20 F from specs 1 F7 Return Air Temperature Actual Supply Air Temperature F measured measured Required Air Anti Scald Valve if present Temperature Difference Outlet Temperature 22 x 1 08 measured 41 2080 0 4 2 09 OL O HOISINHI3HL 22 sat sz ACH 150490 2 1281009 due xv 24 9eAvC CL 4QULIOJSUEI eunsseid cea a 4 m Esa Tea ra ea eura m 42 E p 2 youms MS LI 22 1 4 I 6nid euu NOD pesojo MOTTIA uado jjeuuo oO 31IHM Il N ON iring W xoa weerd 419 4VO 2090 TO W94 4V9 86 Avaa isnray 1v3H 1009 yms MS gt CENAN g 95 4 4 7 Snid d 1 2101010 0
12. airflow highest reading on the gauge Then damper that airflow back to match the lower reading from the duct The flows should now be balanced Actual airflow can be determined from the gauge reading The value read on the gauge is called velocity pressure The Pitot tube comes with a chart that will give the air flow velocity based on the velocity pressure indicated by the gauge This velocity will be either feet per minute or metres per second To determine the actual airflow the velocity is multiplied by the cross sec tional area of the duct being measured Pitot Tube and Gauge Figure A This is an example for determining the airflow in a 6 duct The Pitot tube reading was 0 025 inches of water From the chart this is 640 feet per minute The 6 duct has a cross sectional area of 8 14 x 6 12 2 4 0 2 square feet The airflow is then 640 ft min x 0 2 square feet 128 cfm For your convenience the cross sectional area of some common round duct is listed below DUCT DIAM inches CROSS SECTION AREA sq ft 5 0 14 6 0 20 7 0 i INSULATED PIPE WITH VAPOUR BUILT IN sie BALANCING DAMPERS OUTSIDE HOOD BACK DRAFT DAMPER Figure C 26 Placement of the Pitot Tube TE D gt Pitot Tibe Note For best results keep Pitot tube well away from dampers Figure B The accuracy of the airflow reading will be affected by how close to an
13. i p Latches i E Amps total 8 7 I W ater 3 4 Copper Soldered Connections Connection 19 1725 Supply Air Ventilation Airflow High Exhaust Air 47 5 25 in wg 1350 CFM O utlet 5 in wg 1180 CFM e CI Ventilation 100 140 CFM lt 29 5 Airflow Note Ventilation ports and return plenum opening available off either side of cabinet All units conform to CSA and UL Standards Options 99 186 Weatherhoods Two i 02 14 Return Air Blower Section 29 5 SERVICE CLEARANCE 1 6 c w 1 4 mesh screen 99 130W Remote Wall Mount Dehumidistat Control 24 VAC only 99 RSK6 6 back draft damper 99 104 DET Digital Electronic Timer 19 i SERVICE CLEARAN CE 3 Warranty Effectiveness Aluminum Core 7095 Total Efficiency Enthalpic Core 50 N et Weight 150 Ibs Shipping W eight 165 Ibs Units carry a lifetime warranty on the heat recovery aluminum core a five year warranty on the energy recovery enthalpic core and a five year replacement parts warranty on all other components 14 0212 25 WG CFM 5 WG Specifications Model CAF D S4A 24 P16 Core Ventilation system has patented aluminum heat recovery core standard or an enthalpic energy recovery core optional for energy efficient ventilation Enthalpic cores are recommended for regions where the temperatu
14. only Do not adjust DIP switches on MAIN Circuit Board 30 Operation Heating Cooling When the room thermostat calls for heat it acti vates a circulation pump located inside the Clean Air Furnace This pump delivers hot water from the water heater through the furnace coil and back to the water tank Simultaneously the fur nace blower switches on to high speed and will start circulating air across the coil which picks up heat and delivers it to the rest of your home Once the thermostat s temperature is reached the pump will shut off and the blower will return to its pre set speed or off Note When the furnace blower is left running on low speed the air in the home circulates continuously When the heat is called for the blower will automati cally switch to a higher speed After the required hot air has been delivered the blower will switch back to low speed When the thermostat calls for cooling evaporator coil and condensing unit required the furnace blower activates to high speed and the outdoor condenser unit is energized After the thermostat temperature is reached the condensing unit will shut off and the blower will return to its preset speed or off 31 Ventilation The heat recovery ventilation HRV portion of the Clean Air Furnace is automatic Once set a desired amount of fresh air will be drawn into the home while the furnace blower is activated To reduce humidity increased ventilation may be re
15. recovery core and components As a rule this unit should be installed adjacent to the hot water heater this is not possible or if the piping layout is complex the total head pressure on the pump should be calculated Duct Connections accommodate various installations the Clean Air Furnace has knockouts for the return air plenum and ventilation ducts on both sides of the cabinet Special care and attention should be given to determining which knockouts are to be removed Slide Heat Recovery Core out to remove ventilation Knockouts Never install ductwork directly to the cabinet that is smaller than the opening provided Option 1 Ventilation Ports Off Left Side Upflow Models Remove circular metal knockout Remove styrofoam knockout Downflow Models Remove styrofoam knockout Remove styrofoam knockout 39383 NOTE Return plenum opening can be on either side of cabinet and is not dependent on which side the ventilation ports are on Option 2 Ventilation Ports Right Side Upflow Models Remove circular metal knockout Remove styrofoam knockout Downflow Models Remove styrofoam knockout Remove styrofoam knockout Horizontal Models Remove circular metal knockout Penetrations from sheet metal screws used to fasten the ductwork to the cabinet of the unit should only be placed into the duct flange provided This is to avoid contact and damage of
16. remov as follows ing knockouts provided Once the knock outs in are removed a bead of silicone can be 4 6 from ventilation exhaust hood and placed on the plastic thermo collars upstream of prevailing winds if possible provided to form a seal between the collars and the cabinet The collars can then be e At least 6 from dryer vent oil fill pipes fastened into place with screws Note the combustion outlets gas meters garbage exhaust outlet is always the port on the bottom containers or anything else which may and the supply inlet is always the port on the top contaminate the air both ports should be labeled from the factory as such Do not locate fresh air intake in garages crawl spaces or attics The ductwork from the outside weatherhoods to the unit is usually flexible ducting although rigid Install 18 above grade or above pipe may be needed if the runs are greater than expected snow accumulation 20 feet In either case the pipes both exhaust and supply and the added fittings must be Locating the Exhaust insulated with a complete vapor barrier Weatherhoods To minimize restriction in airflows the ducting should be short with as few bends as possible The Exhaust Weatherhood should be located See diagram below for recommended connection as follows of insulated ducting to outside weatherhoods Atleast 4 6 from the supply inlet Locating Weatherhood Atleast 18 above grade or expected snow accumulation W
17. the heating air conditioning coils and internal wiring Ducting The duct sizing for the furnace section can be determined using HRAI Residential Air System Design Manual SMACNA or any other industry recognized manuals Note Combo units normally deliver air at approx 110 F 43 C and therefore may require larger than normal duciwork When installing the Clean Air Furnace as a replacement unit on a retrofit application always calculate the size of duct that is there 23 Any ductwork running through unconditioned space must be sealed properly and insulated to prevent heat loss All local codes must be followed in determining the amount of insulation needed The ventilation section consists of two 6 15 2cm round ports located on the side of the cabinet which vent to the outside Insulated ducting with a vapour barrier such as flex ducting or ridged pipe wrapped in pipe sleeve is required to prevent condensation from occurring on the pipe Also the airflow in these lines is designed to be balanced See Balancing Airflows in this manu al for damper location and procedure Warning A backdraft damper is required in the exhaust air duct to prevent cold air from entering the unit when the Clean Air Furnace is not running Locating Intake Weatherhood Outside Ducting the Weatherhoods The ventilation portion of the Clean Air Furnace The intake weatherhood should be located can be vented off either side of the unit by
18. the space heating loop during the summer and other periods of infrequent use The concern is that water which remains stationary in the heating loop during the summer may be less than desirable as domestic hot water when it is returned to the water heater at system startup in the fall Thermostats There are two thermostats controlling every combo system the water heater thermostat controlling the hot water temperature and the room thermostat controlling the room air temperature Water Heater Thermostat The water heater thermostat is set by the installing contractor to provide the required temperature at the hot water outlet of the water heater It is important that a warning label placed near the water heater thermostat telling the homeowner not to change the thermostat setting The label is included with the furnace Room Thermostat The room thermostat controls both the water circulation pump and the air circulation fan should be on a centrally located inside wall away from any source of heat such as diffusers appliances and direct sunlight Energy Saving Room Thermostat A set back thermostat or smart stat can be used with a combo system but care must be taken in the timing of the temperature changes The timing of morning warm up should be early enough that the desired air temperature has been reached before the people begin to use domestic hot water The highest demand for space heating is during the morn
19. 3 B 13 Manufacturers Flow Rate Ton cfm ton Supply Air Temperature B 5 B 6 B 14 Cooling Air Flow Rate cfm Water Supply Rate B 15 Circulation Fan Speed Cooling speed from specs Part C EQUIPMENT SELECTION Water Heater DOMESTIC HOT WATER REQUIREMENTS SELECTED WATER HEATER Make Model Minimum Storage Capacity 38 Method A j from page ethod A C 4 Storage Capacity USG or Note Complete C 5 and C 6 only if C 2 was completed C 5 Recovery USG Minimum First Hour Rating from page 38 Method B C 6 First Hour Rating USG 85 x C 4 C 5 min C 2 SPACE HEATING REQUIREMENTS G Energy Factor et C 8 Burner Input Minimum Effective Water C 9 Heater Output Recovery Efficiency Effective Water Heater Output Btu h C 8 x C 9 100 min C 3 37 METHOD A domestic hot water usage for C 1 No of Bathrooms No of Bedrooms Nominal Tank Size USG TABLE A 2 OIL No of Bathrooms 2 to 2 5 No of Bedrooms 2 3 3 Nominal Tank Size USG 32 32 32 32 Not suitable for luxury or high volume applications Iflaundry is ensuite for a one bedroom dwelling increase tank size to 40 USG Activity Average Volume per usage USG Times used in Peak Hour Peak hr Usage USG Shower Hi Flow old Low Flow new 5 min 15 4 10 min 30 7 15 min 43 11 Bath Tub 1 2 full 21
20. Air Handler Air Flow Rate The air entering the air handler can only be warmed by the temperature difference between the hot water and the cool air As the volume CFM L s of air is reduced the amount of heat which can be transferred is also reduced Air Handler Temperature Rise In a fuel fired furnace the combustion gases can be 1000 F 538 C above the return air temperature These units typically have a temperature rise from 50 F 10 C to 90 F 32 C and therefore delivers air at the diffuser at 120 F 49 C to 160 F 71 C With an Integrated Combo System the hot water temperature is approx 130 F 54 C which is 60 F 15 5 C above the return air temperature These units typically have a temperature rise of 35 F 2 C to 40 F 4 C and therefore would deliver air at the diffuser at approximately 105 F 40 5 C to 110 F 43 C Design vs Field Conditions The factors discussed above become very important to consumer comfort Even small differences between design parameters and actual field conditions can impact greatly on output capacity Therefore it is important to do a thorough and complete commissioning of the integrated combo system to ensure the design parameters are met Water System Pressures Within the water system of an Integrated Combo system there are three terms that the designer installer must understand These are head pressure water flow rate and pressure drop Head Pressur
21. Connection 29 5 Bi Airflow High Ventilation Exhaust 25 in wg CEM Bottom i 22 25 47 5 Air Outlet 5 in wg 11 FM A Ventilation 100 140 CFM ie Airflow gt ilati NU Il 1 Supply Fr j 70 uminum Core 19 17 25 Supply Air Latches t Total Efficiency 50 I 12 Enthalpic Core Ed M n N et Weight 150 Ibs m 233 i Front Side Shipping Weight 165 Ibs SERVICE CLEARANCE 3 SERVICE CLEARANCE 1 Note Ventilation ports and return plenum opening available off either side of cabinet All units conform to CSA and UL Standards Options Warranty 99 186 Weatherhoods Two 6 c w 2 1 4 mesh screen Units carry a lifetime warranty on the heat 99 130W Remote Wall Mount Dehumidistat recovery aluminum core a five year warranty Control 24 VAC only on the energy recovery enthalpic core and a 99 RSK6 6 back draft damper five year replacement parts warranty on all 99 104 DET Digital Electronic Timer other components 16 0212 Specifications Model CAF H S4A 24 P16 Core Ventilation system has patented aluminum heat recovery core standard or an enthalpic energy recovery core optional for energy efficient ventilation Enthalpic cores are recommended for regions where the temperature does not drop below 25 F 4 C Filters Washable air filters in exhaust and supply air streams of ventilation section 1 pleated in return plenum side Case Prepainted galvanized steel for superior corrosion resistance
22. EATHERHOOD INSTALLATION Atleast 3 from gas meters combustion COLLAR IS SUPPLIED TO SCREEN ENSURE VAPOUR BARRIER vents or dryer vents side view 5 IS 100 SEALED TO i N KC WALL PLATE Do not install in garages crawl spaces or attics EXTERIOR 1 4 6 mm SCREEN WALL front view 1 Thermal Collar slides over galvanized sleeve of Weatherhood 2 Fasten Thermal Collar to Belt Slide the Insulated Flexible Ducting over the Weatherhood s galvanized sleeve and fasten it to the Thermal Collar 4 Hood is hinged to allow for easy access for cleaning of bird screen 24 Pitot Tube Air Flow Balancing It is necessary to have balanced air flows in an HRV The volume of air brought in from the outside must equal the volume of air exhausted by the unit If the air flows are not properly balanced then The HRV may not operate at its maximum efficiency A negative or positive air pressure may occur in the house The unit may not defrost properly Failure to balance the HRV may void warranty Prior to balancing ensure that 1 All sealing of the ductwork system has been completed 2 All of the HRV s components are in place and functioning properly 3 Balancing dampers are fully open 4 Unit is on high speed 5 After taking readings of both the stale air to the HRV duct and fresh air to the house duct the duct with the lower CFM L s velocity reading shou
23. LIF wm CLEAN AIR FURNACE OPERATION SIZING AND INSTALLATION MANUAL CLEAN AIR FURNACE NOW MANUFACTURED WITH AIRCOM ELECTRONICS NOTE ALTHOUGH SOME MODELS DIFFER IN OPERATION THE BASIC STEPS ARE SIMILAR CAUTION It is always important to assess how the operation of any HRV ERV may interact with vented combustion equipment ie Gas Furnaces Oil Furnaces Wood Stoves etc NEVER install an HRV ERV in a situation where its normal operation lack of operation or partial failure may result in the backdrafting or improper functioning of vented combustion equipment TO BE COMPLETED BY CONTRACTOR AFTER INSTALLATION Installing Contractor Telephone Contact Serial Number Installation Date ISO ch P 9001 4 LEAVE FOR HOMEOWNER 9007 NOTE Due to ongoing research and product development specifications ratings and dimensions are subject to change without notice REGISTERED gt CAF 02 MB 1203 Table of Contents POO INC TONY PRE A E IO 3 D s ripiion and JH DDSB oot e PT ili 4 Combo System Basic Prinelple ssi iii eparina ari 5 Model Number Nomenclature Breakdown iii 12 SPECINCA NONS lin 13 21 Instala UON asolo anali 22 27 O IE SE ERIO 28 PURCHON GONO lilla 29 nai 30 8 072777190 nia 31 UD Procedure eee 32 33 34
24. Service drain 1 2 or 3 4 NPT S4A 24 Coil Output Chart 1000 s of BTUH CFM 25 WG CFM 5 WG 890 69 0 53 6 614 790 64 3 70 9 492 564 740 617 46 8 53 7 660 57 2 63 0 429 492 1030 900 825 740 Tema 130 140 150 160 170 180 130 140 150 160 170 180 130 140 150 160 170 180 3 4 5 Dimensions amp Clearances 14 jade FT o0 p 54 24 16 Voltage 120 VAC 60 Hz Return Air 19 1725 Supply Air Hp 1 3 Ventilati Ventilati 29 5 22 Exhaust 1 Amps total 7 Air Outlet Sele wel 2 W ater 1 2 Copper Soldered Q Ol ehe I Connections Connection it 29 5 Airflow High it 25i 1 FM Supply Air End ES i Ke 890 CFM uw Ventilation 100 140 CFM i Airflow e ia Effectiveness 7096 19 14 Return Air Return 19 Blower Section Aluminum Core Air End Total Efficiency 50 Enthalpic Core MEET 27 di Net Weight 150 Ibs 29 5 gt pe LN Senice Shipping W eight 165 Ibs SERVICE CLEARANCE 10 Drain Note All units conform to CSA and UL Standards Options Warranty 99 186 Weatherhoods Two 6 c w mE 1 4 mesh screen Units carry a lifetime warranty on the heat 99 130W Remote Wall Mount Dehumidistat recov
25. e Head pressure is the pressure created by the circulation pump to push water through the piping system It is this pressure which is used to overcome the resistance to water flow friction caused by the water pipe and fittings is similar in concept to the external static pressure in an air duct system Head pressure is measured in feet of water millimeters of water Note Although the water in the combo system is pressurized by the domestic water system the pump is required to create water flow in the heating loop The domestic water system applies the same pressure to the supply and return sides of heating loop Note The vertical height of the heating loop does not impact on the head pressure as the pressure required to push the water up the vertical height is offset by the weight of the water in the vertical drop on the other side of the heating loop Flow Rate Flow rate is the amount of water flowing in the system It is directly related to the head pres sure and the resistance to flow Flow rate is measured in gallons per minute liters per minute Pressure Drop PD Pressure drop PD is the reduction in total pressure caused by components added to a piping system such as coils valves and fittings The measurement of pressure drop is the difference in pressure on the inlet side of the component and the outlet side Pressure drop is measured in feet of water millimeters of water When connecting the water
26. e in the system Pressure is created in the closed system when water is heated in the water heater Expansion tanks should always be connected to the cold water piping between the water heater shut off valve and the cold water inlet to the water heater Follow manufacturers instructions for sizing and installation air cushion EXPANSION TANKS Anti Scald Valve An anti scald valve is required when the water heater thermostat is set above 140 F 60 C Also an anti scald valve may be required for all installa tions by the authority having jurisdiction The valve is placed in the hot water supply piping from the water heater downstream of the heating loop connection and upstream of any domestic hot water connection The purpose of the valve is to limit the maximum temperature available for domestic hot water by mixing hot water from the water heater with cold water from the municipal supply The Anti Scald valve must be thermostatically controlled and approved to the ASSE standard No 1016 and 1017 for use as an anti scald device Note There are a number of pressure balancing valves and mixing valves on the market which are not certified as a anti scalding device Time to Scald 1st degree burns Off Season Circulation Timer Although the UCG Unified Canadian Guideline does not require these controls a few building codes and municipal by laws do They are used to provide periodic circulation of water through
27. e is very little resistance to flow Gate valves have a greater susceptibility to chatter noise and Balance Valve Ball Valve malfunction with age Gate valves tend to be less expensive than the other type of valves The ball valve can be used as a shut off or drain valve but not a throttling balancing valve When in the open position a full bore ball valve has very little resistance to flow and these valves tend to be both the least expensive and the least susceptible to seizing over time Do not use reduced bore ball valves as they are very restrictive to water flow The balancing valve can be used as a throttling valve It can make small flow changes easily and has lower resistance than a globe valve This valve will be considerable more expensive Globe Valve Gate Valve Shut Valves There are 3 shut off valves required for an integrated combo system as follows One valve a on the cold water side of the water heater upstream of the heating loop connection This valve has the ability to isolate the hot water domestic and space heating from the household cold water supply This valve is required on every water heater whether or not the water heater is used for space heating e One valve b on the hot water supply side of the heating loop downstream of its connection to the domestic water One valve c on the return side of the heating loop upstream of its connection to t
28. entilation system has patented aluminum heat recovery core standard or an enthalpic energy recovery core optional for energy efficient ventilation Enthalpic cores are recommended for regions where the temperature does not drop below 25 F 4 C Filters Washable air filters in exhaust and supply air streams of ventilation section 1 pleated in return plenum side Case Prepainted galvanized steel for superior corrosion resistance Dimensions amp Clearances Side Front Y M CAF U 00 36 P16 Voltage 120 VAC 60 Hz 12 L Top i 22 25 Hp 1 2 E Latches Ventilation n Amps total DA 25 in wg 1350 CFM 19 1725 Supply Air 5 in wg 1180 CFM Ventilation Exhaust Air 47 5 Ventilation 100 140 CFM O utlet Airflow LLL Effectiveness 10 295 ni 22 Aluminum Core i Total Efficienc 50 14 Return Air Blower Section Enthalpic Core Note Ventilation ports and Net Weight 115 lbs return plenum opening Shipping Weight 130 Ibs available off either side of 29 5 ix 19 gt cabinet All units conform ME Airflow performance assumes an evaporator il stati I f 25 WC to CSA and UL Standards SERVICE CLEARANCE 1 SERVICE CLEARANCE 3 coll static pressure 1055 oi Options Warranty 99 186 Weatherhoods Two 6 c w 2 1 4 mesh screen Units carry a lifetime warranty on the heat
29. ere with their operation If this occurs re purge the system as indicated in the Start Up Procedure 33 HRV core freezes up 1 Make sure that the supply and exhaust lines are balanced according to the Balancing Procedure in this manual 2 If out of balance ensure that the balancing dampers have not been moved and that there are no obstructions in the outside hoods During cooling cycle hot water circulates through the coil If the check valve inside the cabinet is stuck in the open position hot water may infiltrate the heating coil This occurs when the hot pipes are not capped off during installation or service and for eign debris enters the piping This debris can set tle under the check valve seat and permit hot water to flow into the coil The problem can be cor rected by repeatedly flushing the heating loop until it is clean Water sits in drain pipes 1 Check drain pans or lines for plugs Confirm that the HRV core is installed according to manufactures recommendations Check the drain line for kinks Make sure that the O ring in the drain nozzles sit flat 5 Ensure the drain line has enough fall to it Condensation ice forming inside ventilation ducts A rip in the vapor barrier or poorly sealed joints may cause condensation or ice to form on the ducting If this occurs replace the entire line Humidity levels too low bh If you have installed a dehumidistat ensure that its setti
30. ery aluminum core a five year warranty Control 24 VAC only on the energy recovery enthalpic core and a 99 RSK6 6 back draft damper five year replacement parts warranty on all 99 104 DET Digital Electronic Timer other components 0302 17 Specifications Core Model CAF H L4A 36 P16 Ventilation system has patented aluminum heat recovery core standard or an enthalpic energy recovery core optional for energy efficient ventilation Enthalpic cores are recommended for regions where the temperature does not drop below 25 F 4 C Filters return plenum side Case L4A 36 Coil Output Chart 1000 s of BTUH Washable air filters in exhaust and supply air streams of ventilation section 1 pleated in Prepainted galvanized steel for superior corrosion resistance Service drain 1 2 or 3 4 NPT 2 1180 e 1120 890 675 1350 5 1275 940 730 Temp 2 4 140 150 160 170 140 150 160 170 180 4 5 GPM Dimensions amp Clearances iu 2 T a Side u M odel CAF H44A 36 P16 EN ULL LUV Voltage 120 VAC 60 Hz Hp 1 2 Return Air 19 17 25 Supply Air Ventilation Ventilation Amps total 8 7 29 5 22 Exhaust Supply Air Outlet Air Inlet Ol ix 29 5 gt
31. he domestic cold water The two valves in the heating loop allow the heating loop to be isolated for service or repair c Return SHUT OFF VALVES Drain Valve A drain valve is required to allow the heating loop to be drained for service or repair and to remove air from the heating loop when commissioning a system The drain valve should be near the low point of the return piping system upstream of the shut off valve and is preferred to be near the water heater Throttling Valve The throttling balancing valve is used to reduce the water flow rate and thereby increase the water temperature drop This is done to ensure proper activation of the water heater thermostat This valve should be a globe or balancing valve Check Valves A spring loaded check valve is required in the heating loop to help minimize thermo siphoning of hot water throughout the heating loop when heating is not called for and cold water back flowing through the heating loop when domestic hot water is used The valve will have a water flow direction arrow marked on it s exterior surface and must be installed with that arrow pointing downstream CHECK VALVE Check valves should always be installed in a vertical rise with the flow of water shown Expansion Tanks Expansion tanks are required for Closed Systems most municipal water systems are closed systems The expansion tank has an air bladder which will contract to relieve pressur
32. household uses Once it is correctly installed safety will never be an issue with your LIFEBREATH furnace No flames fumes or flue gases to be concerned about Your domestic hot water heater boiler now provides the heat source for your furnace This Operating and Installation Guide will help you learn about your LIFEBREATH Clean Air Furnace quickly and easily The table of contents will show you where to find information on every feature of this unit along with easy to understand operating instructions If however you do encounter a question that is not covered in this Guide you should call the LIFEBREATH dealer who installed your furnace Chances are that he will be able to give you a satisfactory answer but if he is unable to do so then we invite you to contact us directly Nutech Brands Inc HRV Aluminum Core A Heat Recovery Ventilator HRV is designed to provide fresh air into a building while exhausting an equal amount of stale air During the winter months the incoming cold fresh air is warmed by utilizing the heat recov ered from the stale air before it is exhausted to the outdoors During summer months when the indoor space is air conditioned the Heat Recovery Ventilator will help in cooling the incoming fresh air with the stale air that is being exhausted ERV Enthalpic Paper Core An Energy Recovery Ventilator ERV is designed to provide fresh air into a building while exhausting an equal amount of stale air An ERV is desig
33. ing warm up and the highest demand for domestic hot water is during morning showers Even if the water heater is properly sized it may not be able to meet this combined load Therefore large set backs should be avoided Air Handler Output Capacity There are four factors that will significantly affect the heating output of the air handler They are Hot water supply temperature EWT Hot water flow rate GPM Air Handler return air temperature Handler air flow rate CFM The hot water inlet temperature is typically 140 F 60 C If this temperature must be increased to achieve higher outputs from the furnace an anti scald valve must be used to prevent domestic hot water temperatures above 140 F 60 C The manufacturer of the Hot Water Tank should be consulted for temperatures higher than 140 F Hot Water Flow Rate The hot water entering the water coil is the source of heat to the air handler The effect of changing the amount of water entering the coil is the same as changing the water temperature As water flow is reduced the output of the air handler and the air temperature rise will both be lowered Air Handler Return Air Temperature The return air temperature entering the air handler is approx 60 F 33 C below the hot water inlet temperature If the return air temperature entering the air handler is reduced more heat transfer will occur and the output of the air handler will increase
34. ld be left alone while the duct with the higher reading should be dampered back to match the lower reading 6 Return unit to appropriate fan speed for normal operation Balancing Procedure The following is a method of field balancing an HRV using a Pitot tube advantageous in situations when flow stations are not installed in 25 the ductwork Procedure should be performed with the HRV on high speed Choose the straightest section of duct between the HRV and the weatherhoods This will be used for both the supply and return ducts Drill a small hole in the duct about 3 16 three feet downstream of any elbows or bends and one foot upstream of any elbows or bends These are recommended distances but the actual installation may limit the amount of straight duct The Pitot tube should be connected to a magnehelic gauge or other manometer capable of reading from O to 0 25 in 0 62 Pa of water preferably to 3 digits of resolution The tube com ing out of the top of the Pitot is connected to the high pressure side of the gauge The tube coming out of the side of the Pitot is connected to the low pressure or reference side of the gauge Insert the Pitot tube into the duct pointing the tip into the airflow For general balancing it is sufficient to move the Pitot tube around in the duct and take an average or typical reading Repeat this procedure in the other supply or return duct Determine which duct has the highest
35. lines for heating loop air handler to the domestic water system the pipes should be connected with a tee to the side of a vertical domestic water pipe or the bottom of a horizontal domestic water pipe This is to help prevent air from entering the heating loop The connections should be as near as practical to the water heater Model Number Nomenclature Breakdown Example Model Number CAF U S2A 24 P16 Model Configuration CAF Clean Air Furnace Built in HRV AH Air Handler No HRV Configuration U Upflow D Downflow H Horizontal Hydronic Coil Size S2A Small Coil 2 Row output chart A S4A Small Coil 4 Row output chart A L2A Large Coil 2 Row output chart A L4A Large Coil 4 Row output chart A L2B Large Coil 2 Row output chart B 00 No Hydronics No Heating Coil No Pump CFM High Speed Cooling Capacity 24 2 tons 30 2 5 tons 36 3 0 tons 48 4 0 tons Cooling coils not available from Nutech Note Refer to individual specification pages for Hydronic Coil and P16 Standard PSC Motor 120V 60Hz Blower configurations E15 Upgrade ECM Motor 120V 50Hz This sheet is for pre configured E16 Upgrade ECM Motor 120V 60Hz Model Number Breakdown only E25 Upgrade ECM Motor 220V 50Hz E26 Upgrade ECM Motor 220V 60Hz Motor Configuration CFM 25 WG CFM 5 WG Specifications Core Model CAF U S4A 24 P16 Ventilation system has paten
36. lve or check valve is installed in the cold water piping upstream of the water heater A backflow prevention valve will prevent the pressure created when water is heated in the water heater from being relieved into the cold water system COLD WATER INLET DOMESTIC HOT WATER CHECK VALVE ANTI SCALD VALVE WHEN REQUIRED EXPANSION TANK OR OTHER MEANS WHEN REQUIRED WATER HEATER HEATING COIL HRV ERV CORE DRAIN VALVE BLOWER COLD WATER INLET SCHEMATIC SYSTEM DIAGRAM Open System SUPPLY AIR COOLING COIL D P nan iu Therefore an expansion tank or equivalent device may be installed as part of any closed system The operations of the valve and expansion tank are discussed later in this section of this manual Note Water systems that incorporate a pressure tank well systems are normally open systems SCHEMATIC SYSTEM DIAGRAM Closed Loop System DOMESTIC HOT WATER ANTI SCALD VALVE 0 WHEN REQUIRED SUPPLY AIR COOLING COIL OPTIONAL TTT WATER HEATER Note Plumbing components and system configuration may vary from diagram portrayed Refer to local codes local bylaws and installation manuals supplied with water heater before starting any installation work HEATING COIL HRV ERV Call for Space Heating Only Operation When the thermostat calls for heat the circulation pump is activated and hot water is drawn from the top of the wate
37. mize a scald hazard potential Combining two or more end uses such as space heating and the heating of domestic hot water in a single system has the potential to increase effi ciency and reduce overall capital costs However the proper design installation and commission ing of these systems are critical if these advan tages are to be realized This manual provides a guideline of good engi neering practice in the design installation and commissioning of Integrated Combo Systems The guidelines in the manual are designed for residential forced warm air Integrated Combo Systems which utilize domestic water heaters or boilers and the LIFEBREATH furnace Heating and cooling loads shall be calculated in accor dance with recognized Residential Heat Loss and Heat Gain Calculation methods Duct design shall comply with recognized Residential Air System Design methods This manual provides work sheets to be used for the purpose of sizing resi dential water heaters and the combo furnace The LIFEBREATH Clean Air Furnace is a volume ventilator system and is not intended to replace a fully ducted Heat Recovery Ventilation HRV sys tem Independent exhaust fans should be used for bathrooms and kitchen range hoods Combo System Basic Principles Closed Open Combo System From the aspect of delivery of domestic hot water and space heating the Open and Closed systems operate the same A system becomes closed when a backflow prevention va
38. ne block is removed from under pump Front access door is on tight Fan speed selection a Heating Cooling factory setting is at high speed and can be changed in the electri cal box to medium high or medium if required b Ventilation factory setting is continuous low speed and can be disconnected in the electrical box if desired 32 Once all of the necessary connections have been made the Clean Air Furnace Start Up Procedure is as follows 1 6 Close shut off valves separating the Clean Air Furnace from the water heater Set up water heater according to manufactur er s instructions Purge air from unit To do so open the supply shut off valve to the furnace Attach a garden hose to drain valve and drain water until you get a continuous flow Close the drain valve and purge the pump To purge the air from the pump turn the large screw on the face of the pump counterclockwise until water leaks out then tighten Open the supply shut off valve Turn on power supply to Clean Air Furnace Caution blower will start to operate at low speed Switch the room thermostat to heat The ther mostat should be set higher than the current room temperature in order to energize the pump and commence the heating cycle If the pump does not start or the Clean Air Furnace is not producing heat refer to the Troubleshooting Section in this manual Set room thermostat at desired temperature set
39. ned for use in warm humid areas with heavy air conditioning use The ERV will transfer both sensible and latent heat from the incoming fresh air to the outgoing stale air thereby reduc ing the load due to ventilation on the air conditioning system ERVs are not suitable for climates where the temperature drops below 4 C 25 F 3 Description and Purpose IMPORTANT NOTE The purpose of this manual is to act as an instal lation guide only for the LIFEBREATH Clean Air Furnace Manufacturers instructions for other components such as the waterheater boiler must be followed All national and local code requirements must met when installing a LIFEBREATH Clean Air Furnace Be sure to consult the proper authori ties Note Temperatures greater than 130 F 54 C pose a serious risk of scalding individuals running domestic hot water for potable use This appliance complies with IAS Canada Inc Requirement CR95 003 Additional Require ments for Fan Coil Units for use with Potable Water Heaters All piping and components connected to this appliance shall be suitable for use with potable water Toxic chemicals such as used for boiler treat ment shall not be introduced into the potable water heater system When using this system and water for space heating is required to be at a higher temperature than for other uses an anti scald valve shall be used to ensure water for other uses is reduced in temperature to mini
40. ng conventional water heaters connections to and from the Clean Air Furnace to the water tank should be made at the point where the pipes leave the tank vertically A T fitting used in each vertical line with the Clean Air Furnace piping connected to the horizontal side of this fitting will work best in avoiding air locks in the circulation pump of the furnace Note Remove shipping block from underneath pump and discard HRV Drain Line Diagram KNOCKOUT 2 DRAIN 95 KNOCKOUT TEE CONNECTOR THROUGH KNOCKOUT DRAIN Plumbing In order to improve serviceability of our products the check valve is included with our manual kit for field installation between the air handler and hot water source The check valve should be installed in a vertical run of pipe with the flow of water in an upward direction An arrow on the check valve indicates its correct orientation and must match the direction of water flow Figure 1 Water Heater Figure 2 This will allow for ease of service to remove any installation debris or service required due to extended hard water conditions Note Take care during soldering to avoid debris or solder from lodging in the check valve Note It is critical to follow the piping configuration shown Maintain a minimum distance of 12 above the CAF AH This will minimize thermal siphoning in the combo system Min 12 above TT top of CAF Heater
41. ng is correct Summer OFF Winter 3096 RH to 4596 RH Check humidifier settings Summer OFF Winter 30 RH to 45 RH NOTE Humidifier should always be 10 lower than dehumidistat Change thermostat fan switch from manual to automatic 34 Humidity levels are too high 1 If you have installed a dehumidistat ensure its setting is correct Summer OFF Winter 30 RH to 45 RH Install a dehumidistat if necessary Winter use only Not for hot southern climates Change thermostat fan switch from automatic to manual NOTE The CAF has the ability to dehumidify dur ing the heating season When outside air is less humid than indoor air If you are in a region where outdoor humidity levels are typically higher than indoor humidity levels a dehumidistat should not be used in this system System Commissioning This section of the manual is designed to be used with the Commissioning of Integrated Combo System worksheet The worksheet is designed to guide you through the start up process in a logi cal step by step method which should minimize the work and time involved in having the system meet the designed parameters The following conditions are assumed The air filter is in place supply diffusers and return grilles are fully open and unrestricted Hot water is available to the furnace The drain valve for the heating loop is closed The shut off valves for the heati
42. ng loop are fully open The throttling valve for the heating loop if applicable is fully opened Electrical power is available at the furnace The return air temperature from the house is approximately 70 F 21 C Water Pump Performance Specifications S2 and S4 Models 16 Total Head in Feet 2 Capacity on U S 12 14 Models 1 Total Head in Feet N o zx Cesi 20 C ladb on 5 jpm 35 WORKSHEET FOR INTEGRATED COMBO SYSTEM DESIGN Training Courses and Forms are available from HRAI Skill Tech Academy 1 800 267 2231 Designer Signature Phone Submitted For Owner By Contractor City Postal Code Postal Code Phone Phone Throttle Valve HRV Off Season Circulation Controls ERV Other Other 36 Part A DESIGN LOAD SPECIFICATIONS Total Heat Loss A 2 Total Heat Gain Part B EQUIPMENT SELECTION Air Handler and Cooling AIR HANDLER Make LIFEBREATH Model Heating Output Water Supply Temperature F 110 140 of A 1 Water Temperature Drop F min 20 F Equipment External Static Pressure 1 500 4 x B 8 from specs Water Return Temperature F Heating Air Flow Rate B 9 B 10 Circulation Fan Speed Heating COOLING EQUIPMENT Return Air Temperature B 12 Cooling Output Btu h Air Handler Temperature Rise 80 125 of A 2 B 1 1 08 x B
43. quired during heating season An optional remote dehumidistat can be installed The dehu midistat will increase the speed of the furnace blower to high and will return to its original setting when humidity levels decrease Your dehumidistat must be switched off during warmer months as it is not required for air conditioning operation To increase humidity a quality humidifier should be added to the system Typically the air flow for ventilation will be set to 50 70cfm for low speed furnace operation and 100 150cfm at high speed The pleated furnace filter should be checked regularly and replaced as needed The HRV filter should be washed twice a year or more often if needed Off Season Circulation Timer models are equipped with a circulation timer It is normal operation for these models to automati cally run the circulation pump for a short period of time intermittently Start Up Procedure In order for any appliance to work properly it must be set up and tested by a knowledgeable technician The following conditions must be met prior to start up 1 Ensure that connecting water lines purged and free of debris Caution solder or other debris may cause the furnace pump or check valve to malfunction Blower wheel rotates freely inside its housing Wiring connections are tight Water is sitting in the P trap below the HRV core AII duct and pipe connections are sealed Check that styre
44. r heater through the air handler and then returned to the water heater There should be at least a 20 F 11 C temperature drop between the hot water supplied to the air handler and the returning water temperature If the temperature drop is less then 20 F 11 C two things may happen 1 Mixing of warm return water with the hot water within the water heater tank stratification which will result in a lower hot water supply temperature 2 A water heater thermostat temperature differential between on and off is approximately 18 F 10 C Therefore if the return water is not cool enough it may not activate the water heater thermostat which causes the burner to operate AII of the water in the water heater will be cooled before the burner begins to operate This may cause large swings in the delivered hot water temperature causing poor space heating performance fluctuating domestic water temperatures and effectively reducing the supply of domestic hot water Call for Domestic Hot Water and Space Heating Operation When both return water from the space heating loop and new cold water replacing domestic water being used enters the water heater the mixed entering water is cool enough to activate the thermostat quickly In this situation the water heater must be capable of satisfying the combined need for hot water domestic hot water and space heating at the same time Air System A circulation fan draws cool ho
45. r side of cabinet 29 5 14 19 i Airflow performance assumes an evaporator All units conform to CSA ED m coil static pressure loss of 25 WC and UL exandardi SERVICE CLEARANCE 17 SERVICE CLEARANCE 3 Options Warranty 99 186 Weatherhoods Two 6 c w DM 1 4 mesh screen Units carry a lifetime warranty on the heat 99 130W Remote Wall Mount Dehumidistat recovery aluminum core a five year warranty Control 24 VAC only on the energy recovery enthalpic core and a 99 RSK6 6 back draft damper five year replacement parts warranty on all other components 99 104 DET Digital Electronic Timer 0209 21 Installation The purpose of this manual is to give the contractor guidelines for installing the LIFEBREATH Clean Air Furnace All national and local codes relating to this type of equipment must be followed Locating The Unit The Clean Air Furnace is designed to be installed vertically unless it is designated as a Horizontal unit in a conditioned space where the surrounding temperature does not fall below 50 F 10 C Attic installations are not recommended Typically the unit is installed in a mechanical area of the basement or other partitioned mechanical room elsewhere in the home location close to an outside wall is recommended as the ventilation supply and exhaust portion will need to be ducted to the outside air Sufficient clearance around the unit is required for service of the filter heat
46. re does not drop below 25 F 4 C Filters Washable air filters in exhaust and supply air streams of ventilation section 1 pleated in return plenum side Case Prepainted galvanized steel for superior corrosion resistance S4A 24 Coil Output Chart 1000 s of BTUH Temp a _ ew _t S S A cU S 3 4 5 GPM Dimensions amp Clearances Top E Model 54 24 16 i 19 1 GN a El DE E Voltage 120 VAC 60 Hz E 22 1 3 A total 7 19 14 Return Air Blower Section Return Air 14 mps total W ater 1 2 Copper Soldered 22 Connections Connection nee l l 7 Airflow High lt 29 5 Ventilation Exhaust i 4 i i 47 5 Air Outlet aaa Bottom Ventilation 100 140 CFM se Airflow Ventilation Supply Oh Effectiveness 70 T Air Inlet Aluminum Core atches 19 17 25 Supply Air Total Efficiency 50 i 12 Enthalpic Core Net Weight 150 Ibs i 29 5 m Front Side Shipping Weight 165 Ibs SERVICE CLEARANCE 3 SERVICE CLEARANCE 1 Note Ventilation ports and return plenum opening available off either side of cabinet All units conform to CSA and UL Standards Options Warranty 99 186 Weatherhoods Two 6 c w n 1 4 mesh screen Units carry a lifetime warran
47. t to high speed for 20 40 or 60 minutes 4adweg 150490 Eu pa oa ss ssp p sa e sf WOO O0N ON WOO ON Spade Connections 29 Selecting Different Heat amp Cool Speeds To select medium speed for heating or cooling switch the appropriate DIP switch to the ON position Example To select medium speed for heating switch the HEAT DIP switch to ON To select medi um speed for cooling switch the COOL DIP switch to ON To select medium for both heat and cool switch both heat and cool DIP switches to ON Connect two wires from dehumidistat to terminals T 23 and T 24 low voltage 18 20 gauge wire Optional Remote Dehumidistat Part 99 130W Boosts unit to high speed when humidity is higher than setpoint Location of Electrical Box in Furnace ECM MOTOR SETTINGS Switch Setting Fan Speeds 10N 20FF Med High 10FF 20N Med Low 10N 20N Low Switch Setting Fan Speeds 3 ON 4 OFF Med High 3 ON 40N Switch Setting Fan Speeds Both OFF Normal 5 ON 6 OFF Increase 15 Increase 15 5 OFF 60N Decrease 1596 Decrease 1596 5 ON 6 ON Norme Delay Switches are for future use no function at this time Note Refer to individual specification pages for Airflow Performance specifications Above settings correspond to DIP switch settings on the ECM circuit board
48. ted aluminum heat recovery core standard or an enthalpic energy recovery core optional for energy efficient ventilation Enthalpic cores are recommended for regions where the temperature does not drop below 25 F 4 C Filters Washable air filters in exhaust and supply air streams of ventilation section 1 pleated in return Case plenum side Prepainted galvanized steel for superior corrosion resistance 544 24 Coil Output Chart 1000 s of BTUH 890 790 740 660 1030 900 825 740 Water Temp 130 140 150 160 3 GPM 16 Supply Air 29 5 Note Ventilation ports and return plenum opening available off either side of cabinet units conform to CSA and UL Standards Options 99 186 99 130W 99 RSK6 99 104 SERVICE CLEARANCE 1 Weatherhoods Two 6 c w 1 4 mesh screen Remote Wall Mount Dehumidistat Control 24 VAC only 6 back draft damper DET Digital Electronic Timer 180 47 5 170 180 130 140 150 160 170 4 GPM Dimensions amp Clearances Side Front 12 I Latches Ventilation gt Supply Air j i Inlet Ventilation Exhaust Air Outlet bi 22 14 Return Air Blower Section i 29 5 e ei SERVICE CLEARANCE 3 Warranty 130 140 150 160 170 180 5 GPM M odel CAF U S4A 24
49. ty on the heat 99 130W Remote Wall Mount Dehumidistat recovery aluminum core a five year warranty Control 24 VAC only on the energy recovery enthalpic core and a 99 RSK6 6 back draft damper five year replacement parts warranty on all 99 104 DET Digital Electronic Timer oiher components 0212 15 25 WG CFM 5 WG Specifications Model CAF D L4A 36 P16 Core Ventilation system has patented aluminum heat recovery core standard or an enthalpic energy recovery core optional for energy efficient ventilation Enthalpic cores are recommended for regions where the temperature does not drop below 25 F 4 C Filters Washable air filters in exhaust and supply air streams of ventilation section 1 pleated in return plenum side Case Prepainted galvanized steel for superior corrosion resistance L4A 36 Coil Output Chart 1000 s of BTUH 1180 1120 890 675 1350 1275 940 730 Te 130 140 150 160 170 180 130 140 150 160 170 180 130 140 150 160 170 180 3 GPM 4 5 Dimensions 4 Clearances Model CAFD14A 36P16 lt 19 29 5 E 22 ___ a Voltage 120 VAC 60 Hz 1 2 19 14 Blower Section 14 ii W ater 3 4 Copper Soldered B 22 Connections
50. use air at approx 70 F 21 C from the return ductwork forces it through the water coil where it is heated and then distributes it to the various rooms of the house through the supply ductwork Water Piping The Piping and fittings used to connect the water heater and air handler must be sized to handle the volume of hot water required by the air handler within the pressure limitations of the circulation pump All piping fittings solders and fluxes must be acceptable for use with domestic hot water Note Chemicals such as boiler system additives cannot be added to the system because water passing through the heating loop re enters the domestic water systems Circulation Pump The circulation pump is factory installed within the air handler The water flow rate will vary depending on the pumps performance and the head pressure resistance of the complete heating loop system Manual Valves There are a number of manual valves required for the system to operate properly and safely These valves are used as shut off valves drain valves and throttling valves They can be globe gate ball or balancing type valves The globe valve can be used as a shut off drain or throttling valve Even in the open position the valve is fairly restrictive to flow It has a much greater equivalent length resistance than the other types of valves The gate valve can be used as a shut off or drain valve When in the open position ther
51. y elbows or bends the readings are taken Accuracy can be increased by taking an average of multiple readings as outlined in the literature supplied with the Pitot tube Balancing Collar Instructions Push and turn with slotted screwdriver Damper automatically locks when pressure is released Insulated flexible ducting When connecting ductwork to the collar take note where screws are located Screws should be located no further than 1 2 from outside edge of collar so as not to impede operation of the damper Figure D Drain Line The ventilation portion of the Clean Air Furnace has two drain pans for removing condensation which may occur on the heat recovery core during cold weather Piping The hot water piping between the hot water tank and the Clean Air Furnace should be new copper type and should not be treated with chemicals sealant or anything else that will interfere with the purity of the potable water Only non lead low temperature solder is permitted for sealing copper joints Where possible the length of pipe should not exceed 200 total equivalent length Any piping running through unconditioned space must be insulated to prevent heat loss and possible freezing of the line Stickers indicating direction of flow Supply to furnace and Return to water heater are labeled on the outside of the cabinet Do not reverse these lines as this will cause the unit to malfunction For pipi
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