Goodman Mfg Light Commercial Self Contained Packaged Cooling and Heating Unit CPC/CPH User's Manual
Contents
1. N a I 2 a l e 2 o o I n o a 2 2 N a a a o L e o n o z o z 2 lt 2 N a 2 a l o I 2 I N N e n o z a a c 2 Tables represent dry coil without filter to compensate for filter add 0 08 to measured E S P SCFM correction for wet coil NOTES 4 24 APPENDIX B ELECTRICAL DATA ELECTRICAL DATA VOLTAGE COMPRESSOR 20 INDOOR INDOOR MODELS VOLTAGE LIMITATION MOTOR FAN MOTOR NAMEPLATE APPLICATION 208 230 60 3 187 253 1 10 45 73 0 1 1 4 1 40 3 TON BD STD STATIC DD STD STATIC 208 230 60 3 13 14 4 TON BD STD STATIC soms 60 3 side BD STD STATIC DD STD STATIC 208 230 60 3 187 253 1 15 96 110 0 5 TON HH fe Lt IDE ET BD STD STATIC N N m 21 o BD STD STATIC 6 TON 460 60 3 E EE BD STD STATIC 575 60 3 sis BD STD STATIC 25 APPENDIX B ELECTRICAL DATA MINIMUM AIR FLOW FOR ELECTRIC HEAT UNIT MINIMUM MODEL NUMBER EHK 10 1250 3 TON EHK 15 1250 EHK 10 1300 EHK 15 1400 EHK 18 1400 EHK 10 1700 5 TON 15 1700 202. gt m Fos o 5 Tables represent dry coil without filter to compensate for filter add 0 08 to measured 5 SCFM correction for wet coil 4 20 APPENDIX BLOWER PERFORMANCE TABLES BELT DRIVE STANDARD DOWN SHOT CPC H036 STANDARD BELT DRIVE DOWN SHOT TURNS OPEN __________ 2 29 0 64 1795 047 1550 035 1994 065 1701 0 49 1433 036 1163 022 1905 0 67 1606 050 1326 0 36 1025 0 22 f 1565 054 1216 ose f 4473 0 55 1137 032 1 1 21 21 1 1 1 1 TURNS OPEN Lr 1 5 j uw v 12579 101 2368 0 85 2175 0601 1961 055 1 14 2276 094 2045 077 1797 0 60 1604 047 1 01 2017 082 1760 oss J 0 87 1730 068 j j 1995 0721 ft 1 1 1 TURNS OPEN 2 4 _ BHP ______ 2771 127 2567 1 05 2421 088 2220 071 142 2548 124 2360 102 2119 0 81 1934 068 130 2331 1 11 2111 089 1868 0 60 296 1 18 2078 096 1840 ozs 1 _ 5 Tables represent dry coil without filter to compensate for filter add 0 08 to measured 5 SCFM correctio
3. Adjust the CFM for the unit by changing the speed tap of the indoor blower motor at the EBTDR connection with the one of the speed taps on M1 or M2 Black High Speed Blue Medium Speed Red Low Speed X 13 MoroR Adjust the CFM for the unit by changing the position of the low voltage leads on the motor terminal block Green is for Fan Only Yellow is for Cooling and Heat Pump Heating Re fer to Appendix A for blower performance at each speed tap NOTE If more than one lead is energized simultaneously the motor will run at the higher speed DRIVE ADJUSTMENTS MOTOR SHEAVE ADJUSTMENTS VL amp 2vP VARIABLE KEY SHEAVES The driving and driven motor sheaves should be in align ment with each other and the shafts parallel VL amp VM SHEAVES ADJUSTMENT 1 2 Loosen set screw B using a 5 32 Allen key Making half or full turns from closed position adjust sheave pitch diameter for desired speed DO NOT OPEN MORE THAN FIVE FULL TURNS Tighten set screw B securely over flat Carefully put on belts and adjust belt tension DO NOT FORCE BELTS OVER GROOVES Ensure all keys are in place and the set screws tight before starting drive Recheck set screws and belt tension after 24 hours service NOTE Future adjustments should be made by loosening the belt tension and increasing or decreasing the pitch diameter of the sheave by half or full turns as required Read
4. Span length inches C 7 Center distance inches D Larger sheave diameter inches d Smaller sheave diameter inches Deflection height inches DRIVE BELT TENSION ADJUSTMENT DEFLECTION FORCE Ibs SHEAVE DIAMETER TYPE ue RECOMMENDED POUNDS OF FORCE PER BELT New V belts will drop rapidly during the first few hours of use Check tension frequently during the first 24 hours of opera tion Tension should fall between the minimum and maximum force To determine the deflection distance from a normal position measure the distance from sheave to sheave using a straightedge or a cord This is your reference line On mul tiple belt drives an adjacent undeflected belt can be used as a reference DEFLECTION in in EVAPORATOR FAN ROTATION CHECK THREE PHASE ONLY Check that fan rotates counter clockwise when viewed from the drive side of unit and in accordance with rotation arrow shown on blower housing If it does not reverse the two in coming power cables In this case repeat bearing check Do not attempt to change load side wiring Internal wiring assures all motors and compressors will rotate in correct di rection once evaporator fan motor rotation check has been made ELECTRICAL INPUT CHECK Make preliminary check of evaporator fan ampere draw and verify that motor nameplate amps are not exceeded A final check of amp draw should be made upon completion of air balancing of the d
5. gt SERVICE VALVE 2 es 1 7 AL B 4 SERVICE eres ACCUMULATOR COMPRESSOR DISTRIBUTOR 5 z EXPANSION DEVICE SERVICE PORT 8 2 H 5 a 8 lt t CHECK VALVE CHECK VALVE 1 INDOOR ORIFICE SERVICE ORIFICE OUTDOOR VALVE COIL REVERSING VALVE lt ACCUMULATOR A i COMPRESSOR e DISTRIBUTOR DISTRIBUTOR _ SERVICE PORT a gt gt gt gt gt CONDENSER ORIFICE SERVICE VALVE INDOOR OUTDOOR COIL COIL When the heat pump is on the heating cycle the outdoor coil is functioning as an evaporator The temperature of the re frigerant in the outdoor coil must be below the temperature of the outdoor air in order to extract heat from the air Thus the greater the difference in the outdoor temperature and the outdoor coil temperature the greater the heating capacity of the heat pump This phenomenon is a characteristic of a heat pump It is a good practice to provide supplementary heat for all heat pump installations in areas where the tem perature drops below 45 F It is also a good practice to provide sufficient supplementary hea
6. LOW VOLTAGE ENTRANCE RETURN 8 5 DIA e POWER THRU _ e THE CURB E 2 N N T 41 2 7 P 47 1 2 ELECTRICAL ENTRANCE AND THRU CURB Low ConTROL WIRING 1 A24V thermostat must be installed for unit operation It may be purchased with the unit or field supplied Thermostats may be programmable or electromechanical as required 2 Locate thermostat or remote sensor in the conditioned space where it will sense average temperature Do not locate the device where it may be directly exposed to supply air sunlight or other sources of heat Follow installation instructions packaged with the thermostat 3 Use 18 AWG wire for 24V control wiring runs not exceeding 75 feet Use 16 AWG wire for 24V control wiring runs not exceeding 125 feet Use 14 AWG wire for 24V control wiring runs not exceeding 200 feet Low voltage wiring may be National Electrical Code NEC Class 2 where permitted by local codes 4 Route thermostat wires from sub base terminals to the unit Control wiring should enter through the condenser panel opening indicated in Electrical Entrance Locations figure Connect thermostat and any accessory wiring to low voltage terminal block TB1 in the main control box NOTE Field supplied conduit may need to be installed depending on unit curb con
7. MAIN POWER LOW VOLTAGE BLOCK Goocinen LOW VOLTAGE ENTRANCE POWER THRU THE CURB CONTROL BOX FAILURE OF UNIT DUE TO OPERATION ON IMPROPER LINE VOLTAGE OR WITH EXCESSIVE PHASE UNBALANCE CONSTITUTES PRODUCT ABUSE AND WILL VOID YOUR WARRANTY AND MAY CAUSE SEVERE DAMAGE TO THE UNIT ELECTRICAL COMPONENTS Areas Without Convenience Outlet It is recommended that an independent 115V power source be brought to the vicinity of the roof top unit for portable lights and tools used by the service mechanic UNITS INSTALLED ON Roor Tops Main power and low voltage wiring may enter the unit through the condenser end or through the roof curb Install conduit connectors at the desired entrance locations External con nectors must be weatherproof All holes in the unit base must be sealed including those around conduit nuts to prevent water leakage into building All required conduit and fittings are to be field supplied Supply voltage to roof top unit must not vary by more than 10 of the value indicated on the unit s data plate Phase voltage unbalance must not exceed 2 Contact your local power company for correction of improper voltage or phase unbalance HIGH VOLTAGE ENTRANCE REMOVE PLUG 12 3 8 30 1 4 Y 4 T 6 Ton 34 1 4 Do
8. PERCENT VOLTAGE UNBALANCE HOW TO USE THE FORMULA EXAMPLE With voltage of 220 216 and 213 1 Average Voltage 220 216 213 649 3 216 2 Maximum Voltage Deviations from Average Voltage 220 216 4 4 400 216 216 Percent voltage unbalance MUST NOT exceed 2 3 Percent Voltage Unbalance 100 x 1 896 Duct CONNECTIONS Verify that all duct connections are tight and that there is no air bypass between supply and return FILTER SECTION CHECK Remove filter section access panels and check that filters are properly installed Note airflow arrows on filter frames BELT DRIVE MODELS ONLY BEARING CHECK Prior to energizing any fans check and make sure that all setscrews are tight so that bearings are properly secured to shafts For heat pump units the airflow must be adjusted so that the air temperature rise falls within the ranges given stated on Data Plate see Appendix A Blower Performance TENSION AND ALIGNMENT ADJUSTMENT Correct belt tension is very important to the life of your belt Too loose a belt will shorten its life too tight premature mo tor and bearing failure will occur Check you belt drive for adequate run in belt tension by measuring the force required to deflect the belt at the midpoint of the span length Belt tension force can be measured using a belt tension gauge available through most belt drive manufacturers SPAN LENGTH DEFLECT 10 FORCE _ t
9. gt emet 4 Clearances ecce 5 Roof Curb Post Installation Checks 5 Roof Duct Connections 6 Rigging Details ees 6 Electrical Wiring RR 8 Circulating Air and Filters eee 10 NONO eesi 10 Condensate Drain Connection 10 Startup Adjustments and Checks 10 Heat Pump Operation 13 Air Flow Adjustments ss 14 Drive Adjustments 15 Motor Sheave Adjustments 15 inerenti 15 jg 16 Appendix A Blower Performance Tables 17 Direct REE 17 Standard Down Shot and Horizontal 036 17 Standard Down Shot and Horizontal 048 18 Standard CPC H060 Down Shot 19 Standard CPC H060 Horizontal 20 Belt 21 Standard Down Shot 21 High Static Down Shot 22 Standard Horizontal ss 23 High Static Horizontal 24 Appendix B Electrical Data 25 Appendix
10. CODE AND ALL LOCAL CODES AND ORDINANCES DO NOT ROUTE WIRES THROUGH REMOVABLE ACCESS PANELS CONDUIT AND FITTINGS MUST BE WEATHER TIGHT TO PREVENT WATER ENTRY INTO THE BUILDING For unit protection use a fuse or HACR circuit breaker that is in excess of the circuit ampacity but less than or equal to the maximum overcurrent protection device DO NOT EXCEED THE MAXIMUM OVERCURRENT DEVICE SIZE SHOWN ON UNIT DATA PLATE All line voltage connections must be made through weather proof fittings All exterior power supply and ground wiring must be in approved weatherproof conduit The main power supply wiring to the unit and low voltage wiring to accessory controls must be done in accordance with these instructions the latest edition of the National Electrical Code ANSI NFPA 70 and all local codes and ordinances All field wiring shall conform with the temperature limitations for Type T wire 63 F 35 C rise The unit is factory wired for the voltage shown on the unit s data plate Refer to model nomenclature in Appendix D for voltage requirement for your unit NOTE If supply voltage is 208V lead on primary of trans former must be moved from the 230V to the 208V tap Refer to wiring diagram on unit for details Main power wiring should be sized for the minimum wire ampacity shown on the unit s data plate Size wires in accor dance with the ampacity tables in Article 310 of the National Electrical Code If long wires are requi
11. clearance of 48 is recommended on all other sides of the unit to facilitate possible compressor removal to allow service access and to insure proper ventilation and condenser airflow The unit must not be installed beneath any obstruc tion The unit should be installed remote from all building exhausts to inhibit ingestion of exhaust air into the unit fresh air intake A A A AA BAA 12111000 11100000 AA A INSULATED PANELS ROOF CURB INSTALLATION ROOF CURB POST INSTALLATION CHECKS After installation check the top of the curb duct connection frame and duct flanges to make sure gasket has been ap plied properly Gasket should be firmly applied to the top of the curb perimeter duct flanges and any exposed duct con nection frame If gasket is loose reapply using strong weather resistant adhesive PROTRUSION Inspect curb to ensure that none of the utility services elec tric routed through the curb protrude above the curb am PROTRUSIONS EXIST DO NO ATTEMPT TO SET UNIT ON CURB ROOF TOP DUCT CONNECTIONS Install all duct connections on the unit before placing the unit on rooftop HORIZONTAL DiscHARGE For horizontal discharge remove the supply and return duct covers and place them over the vertical discharge return and supply openings Install with insulation facing up using the longer screws provided in the literature package Ensure th
12. period is reset If the defrost cycle is not terminated due to the sensor temperature a twelve minute override interrupts the unit s defrost period AIR FLOW ADJUSTMENTS The drive on the supply fan is typically set in the middle of the RPM range The drive motor sheave pitch diameter is field adjustable for the required airflow Refer to Drive Adjustments section below When the final adjustments are complete the current draw of the motor should be checked and compared to the full load current rating of the motor The amperage must not ex ceed the service factor stamped on the motor nameplate The total airflow must not be less than that required for op eration of the electric heaters or the furnace If an economizer is installed check the unit operating bal ance with the economizer at full outside air and at minimum outside air Upon completion of the air flow balancing we recommend replacing the variable pitched motor sheave with a properly sized fixed sheave A matching fixed sheave will provide longer belt and bearing life and vibration free opera tion Initially itis bestto have a variable pitched motor sheave for the purpose of airflow balancing but once the balance has been achieved fixed sheaves maintain alignment and minimize vibration more effectively For direct drive units move green wire for fan NOTE Never run CFM below 350 CFM per ton evaporator freezing or poor unit performance is possible PSC
13. re 186 940 tem 2044 0 72 1761 056 1444 0 40 1136 0 26 e ru RE 122221 2605 2358 0 84 2133 067 1874 052 _ 2526 1 06 2300 088 2026 0 70 1806 055 5291 1 15 2252 093 1975 073 170 05 ji og D D 09 15821 06111111 1 1 1 TURNS OPEN a J a m 2111 0100 2784 1 30 2582 083 2411 0o79 2814 134 2620 1 19 2342 072 2105 066 _ 2665 1 34 2583 1 19 23981 1 06 2103 062 1902 0 57 1 38 2492 1 22 2370 107 2142 0 91 1816 057 1 22 2275 1 09 2098 092 1883 ore __ sof 1 10 1996 0921 __ _ _ 5 Tables represent dry coil without filter to compensate for filter add 0 08 to measured E S P SCFM correction for wet coil 4 23 9 lt Q 74 gt 22 e 2 lt 4 2 lt x S EN gt 2 20 iz c 9 d lt N a 2 a a 2 22 e e o n o z a 2 lt
14. request an inspection 3 In case of concealed damage carrier should be notified as soon as possible preferably within 5 days 4 Filethe claim with the following supporting documents a Original Bill of Lading certified copy or indemnity bond b Original paid freight bill or indemnity in lieu thereof Original invoice or certified copy thereof showing trade and other discounts or reductions d Copy of the inspection report issued by carrier representative at the time damage is reported to the carrier The carrier is responsible for making prompt inspection of damage and for a thorough investigation of each claim The distributor or manufacturer will not accept claims from dealers for transportation damage NOTE When inspecting the unit for transportation damage remove all packaging materials Recycle or dispose of the packaging material according to local codes PRE INSTALLATION CHECKS Carefully read all instructions for the installation prior to in stalling unit Ensure each step or procedure is understood and any special considerations are taken into account be fore starting installation Assemble all tools hardware and supplies needed to complete the installation Some items may need to be purchased locally UNIT LOCATION 72 0001 PREVENT POSSIBLE EQUIPMENT DAMAGE PROPERTY DAMAGE PERSONAL INJURY OR DEATH THE FOLLOWING BULLET POINTS MUST BE OBSERVED WHEN INSTALLING THE UNIT IMPORTANT NOTE Remove
15. wood shipping rails prior to installation of the unit ALL INSTALLATIONS IMPORTANT NOTE crankcase heater is used the unit should be energized 24 hours prior to compressor start up to ensure crankcase heater has sufficiently warmed the compres sor Compressor damage may if this step is not followed NOTE Appliance is shipped from factory for vertical duct application Proper installation of the unit ensures trouble free operation Improper installation can result in problems ranging from noisy operation to property or equipment damages danger ous conditions that could result in injury or personal property damage and could void the warranty Give this booklet to the user and explain it s provisions The user should retain these instructions for future reference For proper operation and condensate drainage the unit must be mounted level Do not locate the unit in an area where the outdoor air will be frequently contaminated by compounds containing chlorine or fluorine Common sources of such compounds include swimming pool chemicals and chlorine bleaches paint stripper adhesives paints varnishes sealers waxes which are not yet dried and solvents used during construction and remodeling Various commercial and industrial processes may also be sources of chlorine fluorine compounds To avoid possible illness or death of the building occupants do NOT locate outside air intake device economizer ma
16. 1800 10 2100 15 2100 6 20 2100 25 2100 ATTENTION INSTALLING PERSONNEL Use only the heater kit specified for each model as dictated by the table above 26 APPENDIX C UNIT DIMENSIONS 38 13 16 74 1 16 6 Ton 42 13 16 hc a 11 le 47 8 1 17 gt 7 3 8 RETURN 25 12 SUPPLY te 1 4 HORIZONTAL DISCHARGE NOTE For horizontal discharge remove the supply and return duct covers and place them over the vertical discharge return and supply openings Install with insulation facing up using the longer screws provided in the literature package r2 19 7 16 LA 48 ane Z RETURN DRAIN THRU CURB EMBOSS LOCATION FOR i THRU THE E i ES i UTILITIES SUPPLY 27 3 8 e 4 2 D 8 3 16 7 1 2 Y FE 47 1 2 BOTTOM VIEW OF UNIT VERTICAL DISCHARGE Goodman Manufacturing Company L P 5151 Felipe Suite 500 Houston TX 77056 www goodmanmfg com www amana hac com 2010 2012 Goodman Manufacturing Company L P 28
17. AGE PERSONAL INJURY OR DEATH DUE TO FIRE EXPLOSIONS SMOKE SOOT CONDENSATION ELECTRIC SHOCK OR CARBON MONOXIDE THIS UNIT MUST BE PROPERLY INSTALLED REPAIRED OPERATED AND MAINTAINED This unit is approved for outdoor installation ONLY Rated performance is achieved after 72 hours of opera tion To assure that your unit operates safely and efficiently it must be installed operated and maintained in accor dance with these installation and operating instructions all local building codes and ordinances EPA REGULATIONS IMPORTANT THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY EPA HAS ISSUED VARIOUS REGULATIONS REGARDING THE INTRODUCTION AND DISPOSAL OF REFRIGERANTS IN THIS UNIT FAILURE TO FOLLOW THESE REGULATIONS MAY HARM THE ENVIRONMENT AND CAN LEAD TO THE IMPOSITION OF SUBSTANTIAL FINES BECAUSE REGULATIONS MAY VARY DUE TO PASSAGE OF NEW LAWS WE SUGGEST A CERTIFIED TECHNICIAN PERFORM ANY WORK DONE ON THIS UNIT SHOULD YOU HAVE ANY QUESTIONS PLEASE CONTACT THE LOCAL OFFICE OF THE EPA NATIONAL CODES This product is designed and manufactured to permit instal lation in accordance with National Codes It is the installer s responsibility to install the product in accordance with Na tional Codes and or prevailing local codes and regulations The heating and cooling capacities of the unit should be greater than or equal to the design heating and cooling loads ofthe area to be conditioned The loads should be calcula
18. B D 35 27 ws 130 Weights shown belt drive with no accessories caution TO PREVENT SEVERE DAMAGE TO THE BOTTOM OF THE UNIT DO NOT FORK LIFT UNIT AFTER WOOD STRUTS HAVE BEEN REMOVED Bring condenser end of unit into alignment with the curb With condenser end of the unit resting on curb member and using curb as a fulcrum lower opposite end of the unit until entire unit is seated on the curb When a rectangular cantilever curb is used care should be taken to center the unit Check for proper alignment and orientation of supply and return open ings with duct RIGGING REMOVAL caution TO PREVENT DAMAGE TO THE UNIT DO NOT ALLOW CRANE HOOKS AND SPREADER BARS TO REST ON THE ROOF OF THE UNIT Remove spreader bars lifting cables and other rigging equip ment ELECTRICAL WIRING ame HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH HIGH VOLTAGE TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK DO NOT TAMPER WITH FACTORY WIRING THE INTERNAL POWER AND CONTROL WIRING OF THESE UNITS ARE FACTORY INSTALLED AND HAVE BEEN THOROUGHLY TESTED PRIOR TO SHIPMENT CONTACT YOUR LOCAL REPRESENTATIVE IF ASSISTANCE IS REQUIRED TO PREVENT DAMAGE TO THE WIRING PROTECT WIRING FROM SHARP EDGES FOLLOW NATIONAL ELECTRICAL
19. C Unit Dimensions 27 REPLACEMENT PARTS ORDERING PARTS When reporting shortages or damages or ordering repair parts give the complete unit model and serial numbers as stamped on the unit s nameplate Replacement parts for this appliance are available through your contractor or local distributor For the location of your nearest distributor consult the white business pages the yellow page section of the local telephone book or contact CONSUMER AFFAIRS GOODMAN MANUFACTURING COMPANY L P 7401 SECURITY WAY HOUSTON TEXAS 77040 877 254 4729 SAFETY INSTRUCTIONS To THE INSTALLER Before installing this unit please read this manual to familiarize yourself on the specific items which must be adhered to including maximum external static pressure to unit air temperature rise minimum or maximum and motor speed connections Keep this literature in a safe place for future reference SHEET METAL PARTS SCREWS CLIPS AND SIMILAR ITEMS INHERENTLY HAVE SHARP EDGES AND IT IS NECESSARY THAT THE INSTALLER AND SERVICE PERSONNEL EXERCISE CAUTION DO NOT CONNECT OR USE ANY DEVICE THAT IS NOT DESIGN CERTIFIED BY GOODMAN FOR USE WITH THIS UNIT SERIOUS PROPERTY DAMAGE PERSONAL INJURY REDUCED UNIT PERFORMANCE AND OR HAZARDOUS CONDITIONS MAY RESULT FROM THE USE OF SUCH NON APPROVED DEVICES WARNING THIS PRODUCT CONTAINS OR PRODUCES CHEMICAL OR CHEMICALS WHICH MAY CAUSE SERIO
20. INSTALLATION INSTRUCTIONS LiGHT COMMERCIAL SELF CONTAINED PACKAGED HEATING amp COOLING UNIT 3 TON 6 TON CPC CPH SERIES sed CERTIFIED Zu seed CERTIFIED 2020220 LisTEO Intertek THIS SYMBOL AS SAFETY PRECAUTION ATTENTION INSTALLING PERSONNEL Prior to installation thoroughly familiarize yourself with this Installation Manual Observe all safety warnings During installation or repair caution is to be observed It is your responsibility to install the product safely and to educate the customer on its safe use All information contained herein is subject to change without notice These installation instructions cover the outdoor NOTE Please contact your distributor or installation of single package electric heating and our website for the applicable cooling units See the Specification Sheet applicable Specification Sheet referred to in to your model for information regarding accessories this manual Goodman Manufacturing Company L P 10 399 5151 Felipe Suite 500 Houston TX 77056 Ts 5 12 www goodmanmfg com www amana hac com 2010 2012 Goodman Manufacturing Company L P Replacement Parts 2 Safety Instructions 2 General Information eene 3 Unit
21. Le s 10 5 Tables represent dry coil without filter to compensate for filter add 0 08 to measured 5 SCFM correction for wet coil 4 4 Ton models are shipped from the factory with speed tap set on MED 18 APPENDIX BLOWER PERFORMANCE TABLES DIRECT DRIVE STANDARD CPC H060 DOWN SHOT CPC H060 DIRECT DRIVE DOWN SHOT EXTERNAL STATIC STANDARD 1334 1286 8 299 999 gt 5 84 ___ ___ __ 60 202 oo so 11 ss oo 1 72 10 me se m 00 55 me 9 7 C oo on rx 5 Tables represent dry coil without filter to compensate for filter add 0 08 to measured 5 SCFM correction for wet coil 4 5 Ton models are shipped from the factory with speed tap set on T4 19 APPENDIX BLOWER PERFORMANCE TABLES DIRECT DRIVE STANDARD CPC H060 HORIZONTAL CPC H060 DIRECT DRIVE HORIZONTAL EXTERNAL STATIC STANDARD in w c w 2o 25 oo 2 60 a 28 w Los 1 19 o oo e 84 93 09 58 648 oo 9 1 1012 so 1089 sw 78 990
22. R EQUIPMENT DAMAGE DUE TO DUST AND LINT BUILD UP ON INTERNAL PARTS NEVER OPERATE UNIT WITHOUT AN AIR FILTER INSTALLED IN THE RETURN AIR SYSTEM Every application may require a different frequency of replace ment of dirty filters Filters must be replaced at least every three 3 months during operating seasons Dirty filters are the most common cause of inadequate heat ing or cooling performance Filter inspection should be made at least every two months more often if necessary because of local conditions and usage Dirty throwaway filters should be discarded and replaced with a new clean filter Disposable return air filters are supplied with this unit See the unit Specification Sheet or Technical Manual for the cor rect size and part number To remove the filters remove the filter access panel on return side of the unit CABINET FINISH MAINTENANCE Use a fine grade automotive wax on the cabinet finish to maintain the finish s original high luster This is especially important in installations with extended periods of direct sun light CLEAN OUTSIDE QUALIFIED SERVICER ONLY The coil with the outside air flowing over it should be inspected annually and cleaned as frequently as necessary to keep the finned areas free of lint hair and debris CoNDENSER EVAPORATOR AND INDUCED DRAFT Motors Bearings on the air circulating blower motor condenser mo tor and the combustion fan motor are permanently lubricated N
23. SERVED WHEN INSTALLING THE UNIT Sufficient structural support must be determined prior to locating and mounting the curb and package unit Ductwork must be constructed using industry guidelines The duct work must be placed into the roof curb before mounting the package unit Our full perimeter curbs include duct connection frames to be assembled with the curb Cantilevered type curbs are not available from the factory Curb insulation cant strips flashing and general roofing material are furnished by the contractor The curbs must be supported on parallel sides by roof mem bers The roof members must not penetrate supply and re turn duct opening areas as damage to the unit might occur NOTE The unit and curb accessories are designed to allow vertical duct installation before unit placement installation after unit placement is not recommended Duct ALL CURBS LOOK SIMILAR TO AVOID INCORRECT CURB POSITIONING CHECK JOB PLANS CAREFULLY AND VERIFY MARKINGS ON CURB ASSEMBLY INSTRUCTIONS MAY VARY IN CURB STYLES AND SUPERSEDES INFORMATION SHOWN See the manual shipped with the roof curb for assembly and installation instructions CLEARANCES UNIT CLEARANCES Adequate clearance around the unit should be kept for safety service maintenance and proper unit operation Atotal clear ance of 75 on the main control panel side of the unit is rec ommended to facilitate possible fan shaft coil and electric heat A
24. US ILLNESS OR DEATH AND WHICH ARE KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM TO AVOID PROPERTY DAMAGE PERSONAL INJURY OR DEATH DO NOT USE THIS UNIT IF ANY PART HAS BEEN UNDER WATER IMMEDIATELY CALL A QUALIFIED SERVICE TECHNICIAN TO INSPECT THE FURNACE AND TO REPLACE ANY PART OF THE CONTROL SYSTEM AND ANY GAS CONTROL HAVING BEEN UNDER WATER THIS UNIT MUST NOT BE USED AS A CONSTRUCTION HEATER DURING THE FINISHING PHASES OF CONSTRUCTION ON A NEW STRUCTURE THIS TYPE OF USE MAY RESULT IN PREMATURE FAILURE OF THE UNIT DUE TO EXTREMELY LOW RETURN AIR TEMPERATURES AND EXPOSURE TO CORROSIVE OR VERY DIRTY ATMOSPHERES HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH WARNING TO PREVENT THE RISK OF PROPERTY DAMAGE PERSONAL INJURY OR DEATH DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR OTHER FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS APPLIANCE ONLY INDIVIDUALS MEETING AT A MINIMUM THE REQUIRE MENTS OF AN ENTRY LEVEL TECHNICIAN AS SPECIFIED BY THE AIR CONDITIONING HEATING AND REFRIGERATION INSTITUTE AHRI MAY USE THIS INFORMATION ATTEMPTING TO INSTALL OR REPAIR THIS UNIT WITHOUT SUCH BACKGROUND MAY RESULT IN PRODUCT DAMAGE PERSONAL INJURY OR DEATH GENERAL INFORMATION WARNING TO PREVENT PROPERTY DAM
25. VING MACHINERY HAZARD TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DISCONNECT POWER TO THE UNIT AND PADLOCK IN THE OFF POSITION BEFORE SERVICNG FANS HEATING STARTUP On new installations or if a major component has been re placed the operation of the unit must be checked Check unit operation as outlined in the following instructions If any sparking odors or unusual sounds are encountered shut off electrical power and recheck for wiring errors or ob structions in or near the blower motors Duct covers must be removed before operating unit The Startup Adjustments and Checks procedure provides a step by step sequence which if followed will assure the proper startup of the equipment in the minimum amount of time Air balancing of duct system is not considered part of this procedure However it is an important phase of any air conditioning system startup and should be performed upon completion of the Startup Adjustments and Checks proce dure The Startup Adjustments and Checks procedure at outside ambients below 55 F should be limited to a readi ness check of the refrigeration system with the required final check and calibration left to be completed when the outside ambient rises above 55 F Toots REQUIRED Refrigeration gauge and manifold Voltmeter Clamp on ammeter Ohmmeter Test lead Minimum 16 AWG with insulated alligator clips Air temperature measuring device General refrigeration mechanics
26. WATTS in w c oo 18 2 7 MED owo 105 EN meo 43 105 CPC H036 DIRECT DRIVE HORIZONTAL EXTERNAL STATIC STANDARD SPEED TAP PRESSURE ESP AMPS WATTS in w c Low MED sw 073 e ur m 23 6 so HIGH e 20 m 103 NOTES Tables represent dry coil without filter to compensate for filter add 0 08 to measured E S P SCFM correction for wet coil 4 3 Ton models are shipped from the factory with speed tap set on LOW 17 APPENDIX BLOWER PERFORMANCE TABLES DIRECT DRIVE STANDARD DOWN SHOT AND HORIZONTAL CPC H048 DIRECT DRIVE DOWN SHOT EXTERNAL STATIC STANDARD SPEED TAP PRESSURE ESP CFM AMPS WATTS in w c 0 10 0 20 0 30 4 0 40 4 0 50 4 4 4 m 9 020 0 30 0 40 0 50 130 aso 1050 070 115 m 1072 515 on 3z 76 9 oz 188 so 9 2 62 2 80 66 1034 0 0 42 2 5 1067 CPC H048 DIRECT DRIVE HORIZONTAL EXTERNAL STATIC STANDARD SPEED TAP PRESSURE ESP CFM AMPS WATTS in w c Low o ms 28 o 2a 58 o 1012 1030 0 10 1805 28 620 516 878 921 950 979 935 967 68 98 84 60 36 620 590 558 540 80 44 706 664 632 MED eo 2 w 977 1001 1027 1044 oo ats
27. an 60 Two spreader bars must span over the unit to prevent damage to the cabinet by the lift cables Spreader bars must be of sufficient length so that cables do not come in contact with the unit during transport Remove wood struts mounted beneath unit base frame before setting unit on roof curb These struts are intended to protect unit base frame from fork lift damage Removal is accomplished by extracting the sheet metal retainers and pulling the struts through the base of the unit Refer to rigging label on the unit Important If using bottom discharge with roof curb duct work should be attached to the curb prior to installing the unit Ductwork dimensions are shown in Roof Curb Installa tion Instructions Refer to the Roof Curb Installation Instructions for proper curb installation Curbing must be installed in compliance with the National Roofing Contractors Association Manual Lower unit carefully onto roof mounting curb While rigging unit center of gravity will cause condenser end to be lower than supply air end a RETURN CONDENSER COIL EVAPORATOR COIL 8 N Soc SUPPLY QE 21 RB d H CORNER amp CENTER GRAVITY LOCATIONS Model 60 o Shipping Weight Operating Weight Corner Weights 165 in in 155 Ibs
28. at the top of the duct connection frame is flush with the top of the roof curb Flexible duct connectors between the unit and ducts are rec ommended Insulate and weatherproof all external ductwork and joints as required and in accordance with local codes 11 14 7 8 REMOVE 1 COVERS eM E RETURN 22 12 SUPPLY r 156 tesne HORIZONTAL DISCHARGE DUCT CONNECTIONS RIGGING DETAILS TO PREVENT PROPERTY DAMAGE THE UNIT SHOULD REMAIN IN AN UPRIGHT POSITION DURING ALL RIGGING AND MOVING OPERATIONS TO FACILITATE LIFTING AND MOVING WHEN A CRANE IS USED PLACE THE UNIT IN AN ADEQUATE CABLE SLING au UNITS ARE LIFTED TWO AT A TIME THE FORK HOLES ON THE CONDENSER END OF THE UNIT MUST NOT BE USED MINIMUM FORK LENGTH IS 42 TO PREVENT DAMAGE TO THE UNIT HOWEVER 48 IS RECOMMENDED Provisions for forks have been included in the unit base frame No other fork locations are approved To PREVENT POSSIBLE EQUIPMENT DAMAGE PROPERTY DAMAGE PERSONAL INJURY OR DEATH THE FOLLOWING BULLET POINTS MUST BE OBSERVED WHEN INSTALLING THE UNIT Unit must be lifted by the four lifting holes located at the base frame corners Lifting cables should be attached to the unit with shackles The distance between the crane hook and the top of the unit must not be less th
29. clearances and that they rotate freely Check for bolts and screws that may have jarred loose during shipment to the jobsite Retighten if necessary Re tighten all electrical connections PRE STARTUP PRECAUTIONS It is important to your safety that the unit has been properly grounded during installation Check ground lug connection in main control box for tightness prior to closing circuit breaker or disconnect switch Verify that supply voltage on line side of disconnect agrees with voltage on unit identification plate and is within the utilization voltage range as indicated in Ap pendix C Electrical Data 11 System Voltage That nominal voltage value assigned to a circuit or system for the purpose of designating its voltage class Nameplate Voltage That voltage assigned to a piece of equipment for the purpose of designating its voltage class and for the purpose of defining the minimum and maximum voltage at which the equipment will operate Utilization Voltage The voltage of the line terminals of the equipment at which the equipment must give fully satisfac tory performance Once it is established that supply voltage will be maintained within the utilization range under all sys tem conditions check and calculate if an unbalanced condi tion exists between phases Calculate percent voltage un balance as follows Three Phase Models Only 2 MAXIMUM VOLTAGE DEVIATIONS 400 X FROM AVERAGE VOLTAGE 1 AVERAGE VOLTAGE 3
30. e windows must be maintained in accordance with National Codes UNIT PRECAUTIONS Do not stand or walk on the unit Donot drill holes anywhere in panels or in the base frame of the unit Unit access panels provide structural support Donotremove any access panels until unit has been installed on roof curb or field supplied structure Do not roll unit across finished roof without prior approval of owner or architect not skid or slide on any surface as this may damage unit base The unit must be stored on a flat level surface Protect the condenser coil because it is easily damaged Roor Curs INSTALLATIONS ONLY Curb installations must comply with local codes and should be done in accordance with the established guidelines of the National Roofing Contractors Association Proper unit installation requires that the roof curb be firmly and permanently attached to the roof structure Check for adequate fastening method prior to setting the unit on the curb Full perimeter roof curbs are available from the factory and are shipped unassembled Field assembly squaring level ing and mounting on the roof structure are the responsibility of the installing contractor All required hardware necessary for the assembly of the sheet metal curb is included in the curb accessory 72 001 TO PREVENT POSSIBLE EQUIPMENT DAMAGE PROPERTY DAMAGE PERSONAL INJURY OR DEATH THE FOLLOWING BULLET POINTS MUST BE OB
31. figuration Use 18 AWG solid conductor wire whenever connecting thermostat wires to terminals on sub base DO NOT use larger than 18 AWG wire A transition to 18 AWG wire may be required before entering thermostat sub base Red R MV Y Cool Optional field installed heat connections 036 THROUGH 072 CIRCULATING AIR AND FILTERS DucTwork The supply duct from the unit through a wall may be installed without clearance However minimum unit clearances must be maintained see Clearances section The supply duct should be provided with an access panel large enough to inspect the air chamber downstream of the heat exchanger A cover should be tightly attached to prevent air leaks Ductwork dimensions are shown in the roof curb installation manual If desired supply and return duct connections to the unit may be made with flexible connections to reduce possible unit operating sound transmission VENTING NOTE Venting is self contained CONDENSATE DRAIN CONNECTION DRAIN CONNECTION A 3 4 drain connection is supplied for condensate pip ing An external trap must be installed for proper condensate drainage DRAIN CONNECTION UNIT HEEN 2 MINIMUM FLEXIBLE expo TUBING HOSE 7 OR PIPE POSITIVE LIQUID SEAL IS REQUIRED Drain Connection Install condensate drain trap as shown Use 3 4 drain line and fitt
32. ings or larger Do not operate without trap HORIZONTAL DRAIN Drainage of condensate directly onto the roof may be ac ceptable refer to local code It is recommended that a small drip pad of either stone mortar wood or metal be provided to prevent any possible damage to the roof CLEANING Due to the fact that drain pans in any air conditioning unit will have some moisture in them algae and fungus will grow due to airborne bacteria and spores Periodic clean ing is necessary to prevent this build up from plugging the drain 10 STARTUP ADJUSTMENTS AND CHECKS 0 HIGH VOLTAGE TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK BOND THE FRAME OF THIS UNIT TO THE BUILDING ELECTRICAL GROUND BY USE OF THE GROUNDING TERMINAL PROVIDED OR OTHER ACCEPTABLE MEANS DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT PRE STARTUP INSTRUCTIONS TO PREVENT PROPERTY DAMAGE OR PERSONAL INJURY DO NOT START THE UNIT UNTIL ALL NECESSARY PRE CHECKS AND TESTS HAVE BEEN PERFORMED Prior to the beginning of Startup Adjustments and Checks procedures the following steps should be completed in the building THERMOSTAT Set the thermostat in the conditioned space at a point at least 10 F below zone temperature Set the thermostat system switch on COOL and the fan switch on AUTO NIGHT SETBACK THERMOSTAT OPTIONAL Set thermostat at a point at least 10 F below zone temperature ame 1 MO
33. just belt tension before starting drive SHEAVE DIAGRAM NOTE Do not operate sheave with flange projecting beyond the hub end MAINTENANCE am HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH r Awan TO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTENANCE REFER TO THIS MANUAL FOR ADDITIONAL ASSISTANCE OR INFORMATION CONSULT A QUALIFIED INSTALLER SERVICE AGENCY OR THE GAS SUPPLIER 15 SHEET METAL PARTS SCREWS CLIPS AND SIMILAR ITEMS INHERENTLY HAVE SHARP EDGES AND IT IS NECESSARY THAT THE INSTALLER AND SERVICE PERSONNEL EXERCISE CAUTION The Self Contained Packaged Air Conditioner and Heat Pump should operate for many years without excessive service calls if the unit is installed properly However it is recommended that the homeowner inspect the unit before a seasonal start up The coils should be free of debris so adequate airflow is achieved The return and supply registers should be free of any obstructions The filters should be cleaned or replaced These few steps will help to keep the product up time to a maximum The Service section that follows should help in identifying problems if the unit does not operate properly FILTERS PREVENT PROPERTY DAMAGE DUE TO FIRE AND LOSS OF EQUIPMENT EFFICIENCY O
34. n for wet coil 4 21 APPENDIX BLOWER PERFORMANCE TABLES BELT DRIVE HIGH STATIC DOWN SHOT CPC H036 HIGH STATIC BELT DRIVE DOWN SHOT TURNS OPEN N B clo B 2 315 8 CPC H048 HIGH STATIC BELT DRIVE DOWN SHOT TURNS OPEN 2194 0 85 1886 066 e e N N lt e o o ojo N er e N o z o a 2 a a 2 x 22 e o n o z oa a Z c 2 lt o z o a a a 4 o L N N o n o z 12 2 2 Tables represent dry coil without filter to compensate for filter add 0 08 to measured E S P SCFM correction for wet coil NOTES 4 22 APPENDIX BLOWER PERFORMANCE TABLES BELT DRIVE STANDARD HORIZONTAL CPC H036 STANDARD BELT DRIVE HORIZONTAL 2 3 4 5 CFM CFM CFM CFM CFM CFM TURNS OPEN rom 1 ee om nu 1 1 J osz 174 040 Haw 522
35. nual fresh air intake motorized fresh air intake too close to an exhaust outlet gas vent termination or plumbing vent outlet For specific distances required consult local codes Allow minimum clearances from the enclosure for fire protection proper operation and service access see Unit Clearances These clearances must be permanently maintained When the unit is heating the temperature of the return air entering the unit must be between 50 F and 100 F GROUND LEVEL INSTALLATIONS ONLY When the unit is installed on the ground adjacent to the building a level concrete or equal base is recommended Prepare a base that is 3 larger than the package unit footprint and a minimum of 3 thick The base should also be located where no runoff of water from higher ground can collect in the unit Roor INSTALLATIONS ONLY To avoid possible property damage or personal injury the roof must have sufficient structural strength to carry the weight of the unit s and snow or water loads as required by local codes Consult a structural engineer to determine the weight capabilities of the roof The unit may be installed directly on wood floors or on Class Class B or Class C roof covering material To avoid possible personal injury a safe flat surface for service personnel should be provided Adequate clearances from the unit to any adjacent public walkways adjacent buildings building openings or openabl
36. o additional oiling is required LUBRICATION The fan shaft bearings the 1 to 2 HP supply fan motors the condenser fan motors and compressors are permanently lu bricated FUNCTIONAL PARTS Refer to the unit Parts Catalog for a list of functional parts Parts are available from your distributor SERVICE THE FOLLOWING INFORMATION IS FOR USE BY QUALI FIED SERVICE AGENCY ONLY OTHERS SHOULD NOT ATTEMPT TO SERVICE THIS EQUIPMENT Common Causes of Unsatisfactory Operation of Heat Pump on the Heating Cycle INADEQUATE AIR VOLUME THROUGH INDOOR CoiL When a heat pump is in the heating cycle the indoor coil is functioning as a condenser The return air filter must always be clean and sufficient air volume must pass through the indoor coil to prevent excessive discharge pressure and high pressure cut out OUTSIDE AIR RETURN Do not introduce cold outside air into the return duct of a heat pump installation Do not allow air entering the indoor coil to drop below 65 F Air below this temperature will cause low discharge pressure thus low suction pressure and exces sive defrost cycling resulting in low heating output It may also cause false defrosting 16 UNDERCHARGE An undercharged heat pump on the heating cycle will cause low discharge pressure resulting in low suction pressure and frost accumulation on the outdoor coil Poor TERMINATING SENSOR CONTACT The unit s defrost terminating sensor mu
37. other day when conditions are more suitable but DO NOT FAIL TO TEST If the outdoor ambient is low and the unit operates properly on the heating cycle you may check the pressure cutout operation by blocking off the indoor return air until the unit trips If unit operates properly in the heating cycle raise the temperature setting until the heating second stage makes contact Supplemental resistance heat if installed should now come on Make sure it operates properly NOTE If outdoor thermostats are installed the outdoor ambient must be below the set point of these thermostats for the heaters to operate It may be necessary to jumper these thermostats to check heater operation if outdoor ambient is mild For thermostats with emergency heat switch return to step 11 The emergency heat switch is located at the bottom of the thermostat Move the switch to emergency heat The heat pump will stop the blower will continue to run all heaters will come on and the thermostat emergency heat light will come on If checking the unit in the wintertime when the outdoor coil is cold enough to actuate the defrost control observe at least one defrost cycle to make sure the unit defrosts completely FiNAL SvsrEM CHECKS 16 17 18 19 20 Check to see if all supply and return air grilles adjusted and the air distribution system is balanced for the best compromise between heating and cooling Check for air leaks in the ductwo
38. pt that condenser becomes evaporator evapo rator becomes condenser cooling becomes heating HEATING CYCLE The heat pump operates in the heating cycle by redirecting refrigerant flow through the refrigerant circuit external to the compressor This is accomplished with through the reversing valve Hot discharge vapor from the compressor is directed to the indoor coil evaporator on the cooling cycle where the heat is removed and the vapor condenses to liquid It then goes through the expansion device to the outdoor coil con denser on the cooling cycle where the liquid is evaporated and the vapor goes to the compressor When the solenoid valve coil is operated either from heating to cooling or vice versa the piston in the reversing valve to the low pressure high pressure reverse positions in the re versing valve The following figures show a schematic of a heat pump on the cooling cycle and the heating cycle In addition to a re versing valve a heat pump is equipped with an expansion device and check valve for the indoor coil and similar equip ment for the outdoor coil It is also provided with a defrost control system The expansion devices are flowrator distributors and perform the same function on the heating cycle as on the cooling cycle The flowrator distributors also act as check valves to allow for the reverse of refrigerant flow COOLING SERVICE PORT REVERSING VALVE 7
39. red it may be neces sary to increase the wire size to prevent excessive voltage drop Wires should be sized for a maximum of 3 voltage drop caution To AVOID PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE USE ONLY COPPER CONDUCTORS au LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION VERIFY PROPER OPERATION AFTER SERVICING NOTE A weather tight disconnect switch properly sized for the unit total load must be field installed An external field supplied disconnect may be mounted on the exterior panel Ensure the data plate is not covered by the field supplied disconnect switch Some disconnect switches are not fused Protect the power leads at the point of distribution in accordance with the unit s data plate Theunit must be electrically grounded in accordance with local codes or in the absence of local codes with the latest edition of the National Electrical Code ANSI NFPA 70 A ground lug is provided for this purpose Size grounding conductor in accordance with Table 250 95 of the National Electrical Code Do not use the ground lug for connecting a neutral conductor Remove plug in panel located at the condenser end of unit and route conduit to control box Remove plug in control box and connect power wiring to the contactor closest to the entrance If Single Point kit is used refer to Installation Instructions supplied with kit
40. rk See Sections on Air Flow Adjustments Make sure the unit is free of rattles and the tubing in the unit is free from excessive vibration Also make sure tubes or lines are not rubbing against each other or sheet metal surfaces or edges If so correct the trouble Set the thermostat at the appropriate setting for cooling and heating or automatic changeover for normal use Be sure the Owner is instructed on the unit operation filter servicing correct thermostat operation etc 13 REFRIGERATION PERFORMANCE CHECK Under normal summertime full load operating conditions superheat should be between 8 F and 12 F and sub cooling measured at the condenser outlet should be 15 F nominal 25 F to 35 F temperature difference should exist between the entering condenser air and the temperature correspond ing to the compressor saturated discharge pressure Check that compressor RLA corresponds to values shown in Ap pendix C RLA draw can be much lower than values listed at low load conditions and low ambient condensing tempera tures Values in Appendix C can slightly exceed at high load conditions and high ambient condensing temperatures HEAT PUMP OPERATION Coo Linc CYCLE When the heat pump is in the cooling cycle it operates ex actly as a Summer Air Conditioner unit In this mode all the charts and data for service that apply to summer air condi tioning apply to the heat pump Most apply on the heating cycle exce
41. st make good ther mal contact with the outdoor coil tubing Poor contact may not terminate the unit s defrost cycle quickly enough to pre vent the unit from cutting out on high discharge pressure MALFUNCTIONING REVERSING VALVE THIS BE DUE 1 Solenoid not energized In order to determine if the solenoid is energized touch the nut that holds the solenoid cover in place with a screwdriver If the nut magnetically holds the screwdriver the solenoid is energized and the unit is in the cooling cycle No voltage at unit s solenoid Check unit voltage If no voltage check wiring circuit 3 Valve will not shift a Undercharged check for leaks b Valve Body Damaged Replace valve c Unit Properly Charged If it is on the heating cycle raise the discharge pressure by restricting airflow through the indoor coil If the valve does not shift tap it lightly on both ends with a screwdriver handle DO NOT THE VALVE BODY ff the unit is on the cooling cycle raise the discharge pressure by restricting airflow through the outdoor coil If the valve does not shift after the above attempts cut the unit off and wait until the discharge and suction pressure equalize and repeat above steps If the valve does not shift replace it 2 APPENDIX BLOWER PERFORMANCE TABLES DIRECT DRIVE STANDARD DOWN SHOT AND HORIZONTAL CPC H036 DIRECT DRIVE DOWN SHOT EXTERNAL STATIC STANDARD SPEED TAP PRESSURE ESP CFM AMPS
42. t to handle the entire heating requirement should there be a component failure of the heat pump such as a compressor or refrigerant leak etc Since the temperature of the refrigerant in the outdoor coil on the heating cycle is generally below freezing point frost forms on the surfaces of the outdoor coil under certain weather con ditions of temperature and relative humidity Therefore it is necessary to reverse the flow of the refrigerant to provide hot gas in the outdoor coil to melt the frost accumulation This is accomplished by reversing the heat pump to the cooling cycle At the same time the outdoor fan stops to hasten the tem perature rise of the outdoor coil and lessen the time required for defrosting The indoor blower continues to run and the supplementary heaters are energized 14 DEFROST CONTROL During operation the power to the circuit board is controlled by a temperature sensor which is clamped to a feeder tube entering the outdoor coil Defrost timing periods of 30 60 and 90 minutes may be selected by setting the circuit board jumper to 30 60 and 90 respectively Accumulation of time for the timing period selected starts when the sensor closes ap proximately 31 F and when the wall thermostat calls for heat At the end of the timing period the 5 defrost cycle will be initiated provided the sensor remains closed When the sensor opens approximately 75 F the defrost cycle is terminated and the timing
43. ted by an approved method or in accordance with ASHRAE Guide or Manual J Load Calculations published by the Air Condi tioning Contractors of America Obtain from American National Standards Institute 1430 Broadway New York NY 10018 System design and installation should also where applicable follow information presented in accepted industry guides such as the ASHRAE Handbooks The manufacturer assumes no responsibility for equipment installed in violation of any code or regulation The mechanical installation of the packaged roof top units consists of making final connections between the unit and building services supply and return duct con nections and drain connections if required The internal systems of the unit are completely factory installed and tested prior to shipment Units are generally installed on a steel roof mounting curb assembly which has been shipped to the job site for installa tion on the roof structure prior to the arrival of the unit The model number shown on the unit s identification plate identi fies the various components of the unit such as refrigeration tonnage heating input and voltage Carefully inspect the unit for damage including damage to the cabinetry Any bolts or screws which may have loosened in transit must be re tightened In the event of damage the receiver should 1 Make notation on delivery receipt of any visible damage to shipment or container 2 Notify carrier promptly and
44. tools TEMPORARY HEATING OR CooLiNG If the unit is to be used for temporary heating or cooling a Startup Adjustments and Checks must first be performed in accordance with this manual Failure to comply with this requirement will void the warranty After the machines are used for temporary heating or cooling inspect the coils fans and motors for unacceptable levels of construction dust and dirt and install new filters CONTRACTOR RESPONSIBILITY The installing contractor must be certain that All supply and return air ductwork is in place and corresponds with installation instructions All thermostats are mounted and wired in accordance with installation instructions All electric power all gas hot water or steam line connections and the condensate drain installation have been made to each unit on the job These main supply lines must be functional and capable of operating all units simultaneously Roor Cuna INSTALLATION CHECK Inspect the roof curb for correct installation The unit and curb assembly should be level Inspect the flashing of the roof mounting curb to the roof especially at the corners for good workmanship Also check for leaks around gaskets Note any deficiencies in a separate report and forward to the contrac tor OBSTRUCTIONS FAN CLEARANCE AND WIRING Remove any extraneous construction and shipping materi als that may be found during this procedure Rotate all fans manually to check for proper
45. uct system see Appendix B REFRIGERATION SYSTEM CHECKS Ensure the hold down bolts on the compressor are secure and have not vibrated loose during shipment Check that vi bration grommets have been installed Visually check all pip ing and clamps The entire refrigeration system has been factory charged and tested making it unnecessary to field charge Factory charges are shown on the unit nameplate Install service manifold hoses Gauges should read satura tion pressure corresponding to ambient temperature Charge should be checked to obtain 12 to 15 of sub cooling per system i e compressor circuits START UP PROCEDURE AND CHECKLIST Begin with power turned off at all disconnects 1 Turn thermostat system switch to Cool and fan Switch to Auto and turn temperature setting as high as it will go 2 Inspect all registers and set them to the normal open position 3 Turn on the electrical supply at the disconnect 4 Turn the fan switch to the ON position The blower should operate after a 7 second delay 5 Turn the fan switch to Auto position The blower should stop after a 65 second delay 6 Slowly lower the cooling temperature until the unit starts The compressor blower and fan should now be operating Allow the unit to run 10 minutes make sure cool air is being supplied by the unit 7 Turn the temperature setting to the highest position stopping the unit The indoor blower will continue to r
46. un for 65 seconds 8 Turn the thermostat system switch to OFF and disconnect all power when servicing the unit HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH r Heat Pump Start Up PROCEDURE 9 Check the cooling mode for the heat pump in the same manner as above The reversing valve is energized when the thermostat is placed in the cooling position A clicking sound should be noticeable from the reversing valve By lowering the temperature setting to call for cooling the contractor is energized The compressor blower and fan should then be running After the cooling mode is checked out turn the thermostat system switch to OFF 10 Turn the thermostat system switch to HEAT and fan switch to AUTO 11 12 13 14 15 Slowly raise the heating temperature setting When the heating first stage makes contact stop raising the temperature setting The compressor blower and fan should now be running with the reversing valve in the de energized heating position After giving the unit time to settle out make sure the unit is supplying heated air If the outdoor ambient is above 80 F the unit may trip on its high pressure cut out when on heating The compressor should stop The heating cycle must be thoroughly checked so postpone the test to an
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