CARRIER Package Units(both Units Combined) Manual L0605138
User Manual: CARRIER CARRIER Package Units(both units combined) Manual CARRIER Package Units(both units combined) Owner's Manual, CARRIER Package Units(both units combined) installation guides
Open the PDF directly: View PDF .
Page Count: 32
Download | |
Open PDF In Browser | View PDF |
£n Installation NOTE: Read installation. the entire instruction manual before NOTE: Installer: Make sure the Owner's Manual Instructions are left with the unit after installation. starting TABLE and the OF CONTENTS Page 2 2 2-16 ................................. 2 Identify Unit ................................... Inspect Shipment ................................ Provide Unit Support .............................. Roof Curb ..................................... Slab Mount .................................... Ground Mount ................................. 2 2 2 2 2 2 Provide Clearances ................................ 2 Rig and Place Unit ................................ Inspection ..................................... Introduction .................................... 7 7 7 Use of Rigging Bracket ........................... Select and Install Duc_vork .......................... 7 9 Converting Horizontal Discharge A05307 Units to Downflow (Vertical) Discharge Units ......................... Provide for Condensate Disposal ..................... Install Electrical Connections ....................... High- Voltage Connections 9 9 11 ....................... 11 Routing Power Leads Into Unit .................... Connecting Ground Lead to Ground Screw Routing Control Wires .......................... Accessory Installation ........................... Special Procedures for 208-v Operation PRE-START-UP .................................. START-UP ....................................... .......... ............. Unit Start-Up ................................ Sequence of Operation ............................ Checking and Adjusting Refrigerant Refrigerant Charge ............................. Charge .......... No Charge .................................... Low Charge Cooling ............................ To Use Cooling Charging (;harts ................... Indoor Airflow and Airflow Adjustments Defrost Control .................................. Quiet Shift .................................... Defrost ...................................... Heat/Cool Mode ........................ ............ ..... Fig. 1 - Unit 50CR MAINTENANCE ............................... Air Filter ....................................... Indoor 16 16 17 17 Electrical Controls and Wiring ...................... Refrigerant Circuit ................................ Indoor Airflow .................................. 20 20 20 22 22 22 22 22 22 22 22 22 22 Outdoor Outdoor Blower and Motor 24-28 25 11 11 11 17-23 20 Check for Refrigerant Leaks ........................ Start-Up Adjustments ............................. Checking Cooling and Heating Control Operation Emergency Instructions Service SAFETY CONSIDERATIONS ........................ INTRODUCTION .................................. RECEIVING AND INSTALLATION ................ Check Equipment to the Expertg .......................... 25 (;oil, Indoor Coil, and Condensate Fan .................................... Metering Devices-TXV & AccuRater Pressure Switches ................................ Loss-of-Charge Switch Drain Pan Piston .... 26 26 26 .......... 26 26 ........................... 27 High-Pressure Switch ............................. Copeland Scroll Compressor (Puron (_:Refrigerant) 27 27 ....... Refrigerant System ............................... Refrigerant ................................... Compressor Oil ................................ 27 27 27 Servicing Systems on Roofs with Synthetic Liquid-Line Filter Drier ......................... Puron (R-410A) System Information Refrigerant Charging ............................... Loss-of-Charge Switch ......................... Check Defrost Thermostat ........................ TROUBLESHOOTING ............................. START-UP CHECKLIST ........................... 25 25 Materials .............. ... 27 28 28 28 28 28 28 28 SAFETY CONSIDERATIONS Installation and servicing ofthisequipment canbehazardous dueto mechanical andelectrical components. Onlytrained andqualified personnel should install, repair, orservice thisequipment. Untrained personnel canperform basic maintenance functions such ascleaning andreplacing airfilters. All other operations must be performed bytrained service personnel. When working onthis equipment, observe precautions intheliterature, ontags, andon labels attached to or shipped withtheunitandothersafety precautions thatmayapply. Follow allsafety codes. Installation mustbeincompliance with localandnational building codes. Wear safety glasses, protective clothing, andworkgloves. Have fireextinguisher available. Read these instructions thoroughly andfollowallwarnings orcautions included inliterature andattached totheunit. Recognize safety information. Thisisthesafety-alert symbol Z_X When you see this symbol on the unit and in instructions be alert to the potential for personal or manuals. injury. injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions operation. which will result in enhanced Step 1--Check IDENTIFY installation, reliability, or AND INSTALLATION Equipnmnt UNIT The unit model number and serial number are printed on the unit informative plate. Check this information against shipping papers. INSPECT SHIPMENT Inspect for shipping damage while unit is still on shipping pallet. If unit appears to be damaged or is torn loose from its anchorage, have it examined by transportation inspectors before removal. Folavard claim papers directly to transportation company. Manufacturer is not responsible for any damage incurred in transit. Check all items against shipping list. Immediately Conditioning office if any item notify the nearest Carrier Air is missing. To prevent loss or damage, packages leave all parts in original Step 2--Provide For hurricane Certificate ROOF Understand these signal words: DANGER. WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal RECEIVING until installation. Unit Support tie downs, (Professional contact distributor Engineering) for details and PE if required. CURB Install accessory roof curb in accordance with instructions with curb (See Fig. 2). Install insulation, cant strips, flashing. Ductwork must be attached to curb. IMPORTANT: The gasketing applied and of the unit to the roof curb is critical for a water tight seal. Install gasketing roof curb. Improperly shipped roofing, gasketing material supplied with the also can result in air leaks and poor unit performance. Curb should be level to within 1/4 in. (See Fig. 3). This is necessa U for unit drain to function properly. Refer to accessory roof curb installation instructions for additional information as required. ELECTRICAL SHOCK SLAB HAZARD Failure to follow this warning or death. could result in personal injury Before installing or servicing system, always turn off main power to system. There may be more than one disconnect switch. Turn off accessory heater power switch if applicable. MOUNT Place the unit on a solid, level concrete in. thick with 2 in. above grade. approximately 2 in. beyond pad that is a minimum of 4 The slab should extend the casing on all 4 sides of the unit (See Fig. 4). Do not secure the unit to the slab except when required local codes. GROUND MOUNT The unit may be installed either on a slab or placed directly ground if local codes permit. Place the unit on level ground with gravel for condensate discharge. EQUIPMENT DAMAGE Failure to follow damage. Step 3--Provide HAZARD this caution may result in unit component Puron (R-410A) systems operate at higher pressures than standard R-22 systems. DO NOT use R-22 service equipment or components on Puron (R-410A) equipnmnt. Ensure service equipment is rated for Puron (R-410A). by on the prepared Clearances The required minimum Adequate ventilation service clearances are shown in Fig.6 and 7. and outdoor air must be provided. The outdoor fan draws air through the outdoor coil and discharges it through the top fan grille. Be sure that the fan discharge does not recirculate to the outdoor coil. Do not locate the unit in either a corner or under an overhead obstruction. The minimum clearance under a partial overhang (such as a normal house overhang) is 48 in. above the unit top. The maximum horizontal extension of a partial overhang must not exceed 48 in. IMPORTANT: INTRODUCTION Do not restrict outdoor either the outdoor-air The 50CR heat pump outdoor installation. horizontal-discharge ground-level (vertical) is fully self-contained and designed for Standard units are shipped in a configuration for installation on a slab. Standard discharge units can be converted configurations for rooftop to downflow applications. to compressor airflow. An air restriction inlet or the fan discharge at may be detrimental life. Do not place the unit where water, ice. or snow from an overhang or roof will damage or flood the unit. Do not install the unit on carpeting or other combustible materials. Slab-mounted units should be at least 4 in. above the highest expected water and runoff levels. Do not use unit if it has been under water. base_ / / / / [[[ ....... Screw _ @ (NOTE A) _§ Fla slur, I :';allg_ "_ _ WOOd nailer*_ u0p, ______41K ilFdbRooz urb. [ It:i:::tl _ Insulation(field Roofing / II m_, \ II vs!:!tl II _ \ __Jtl H Roof supphed) II. field supplied Curb for Small Ductwork field supplied] Cabinet Roof Note A: When unit mounting screw is used, retainer bracket must also be used. Curb for Large Cabinet Note A: When unit mounting screw is used, retainer bracket must also be used. \/ /\ R/A S/A _Gasket E D Insulated deck pan Sho_ Suppod deck paq around_ duct Gasket around outer edge \ Long Suppod 'N\\ =. Retlm opening (BXC) A05308 UNIT ODS CATALOG NUMBER B IN. (aM) CPRFCURB006A00 8 (203) 11 (279) 16-1/2 (419) 28-3/4 (730) 30-3/8 (771) 44-5/16 (1126) 45-15/16 CPRFCURB007A00 14 (356) 11 (279) 16-1/2 (419) 28-3/4 (730) 30-3/8 (771) 44-5/16 (1126) 45-15/16 CPRFCURB008A00 8 (203) 16-3/16 (411) 17-3/8 (441) 40-1/4 (1022) 41-15/16 (1065) 44-7/16 (1129) 46 - 1/16 (1169) CPRFCURB009A00 14 (356) 16-3/16 (411) 17-3/8 (441) 40-1/4 (1022) 41-15/16 (1065) 44-7/16 (1129) 46-1/16 (1169) be used as well. SIZE 500R024-036 500R042-060 D IN. (MM) C IN. (MM) E IN. (MM) G A IN. (aM) F IN. (MM) IN.(aM) (1167) (1167) NOTES: curb must be set lip for unit 1. Roof 2. Seal 3. Dimension 4. Roof curb 5. Table lists only 6. Attach ductwork 7. Insulated 8. Dimensions 9. When strip unit conditions. nlust be applied, being as required, installed. to unit being installed. in ( ) are in millimeters. is made pmlels: of 16 gauge the dimensions, to curb steel. per part (flmlges I in. thick nmnber, of duct fiberglass that have changed. rest on curb). 1 lb. density. are in inches. mounting This screw bracket is used (see is available Note throt_gh A). a retainer bracket must This bracket Mierometl. Fig. 2 - Roof Curb Dimensions must also be used when required by code for hurricane or seismic MAXIMUM ALLOWABLE DIFFERENCE (in.) A-B B-C A-C 1/4 1/4 1/4 C99065 Fig. 3 - Unit Leveling Tolerances I EVAR COIL COND. COIL C99096 Fig. 4 - Slab Mounting Detail 1 2 Y Z 3 X A06114 Fig. 5 - Corner CORNER WEIGHTS Unit Total Weight Corner Weight 1 Corner Weight 2 Corner Weight 3 Corner Weight 4 Weights (SMALL CABINET) (Lbs.) CORNER WEIGHTS (LARGE CABINET) 036 Unit 373 Total Weight Corner Weight 1 024 349 030 349 70 54 70 54 58 84 141 84 141 90 Corner Weight 2 Corner Weight 3 150 Corner Weight 4 75 "uO oo 042 438 048 463 O6O 499 88 68 98 61 1O7 7O 106 177 127 177 136 186 ELECTRICAL C_ARACTERiSTiCS UNil i §480 [33R] t 5OSROR4 208 024 050 406 5 16001 I 60 5OCBORO ROS/RRO 1 60, 2081230 R 60 5BCR038 208/230 ZOS/230 R 60 DONNER WEGT A B SUPPLY 230 UNiT WT 70/3 70 3 7 l 60 5 84138 54/D4 5 84/38 NEIGBT i CENTER OF GRAVIIY MNIIN 349 1158 3 9911i3902) I §OBO[£OO] 4S9B[193i 1 447 349 373 ilRS 3 i169R 991113902i %419i4/02] i i 5OBO[ROO] 508 01200] 4S90[195i R556[140i i i 4470[i_6] RR02{iSO] O[iT6] REQUIRED CLEARANCES TO DOMBU$_BLE MAlL LBS /_G C 54/24 UNIT s ' 14!/64 il4 /64 MiiLiMETPRS [iNi 3566 [i4OO} 50 8 iROOi 3566 [_4OO} 12 7 (050] 9i44 [3600} lOP O_ UNIT ...................... DUCT SIDE O? U_iT ............. S_SE OPPOSITE SUCTS ........................ BOTTOM OF UNIT ..................... ELECiRIC HEAl PANEL ...................... 0 0 NED. REQ_RED CLEARANCES. 056 513 2_iRB/26 3 MiLLiMETDRS [i_] 10668 [4200_ 9140 [3800i BETWEEN UNTIE, POWER ENIRY SiBE .............. UNIT AND UNGROSNSDD SURPACBS, POWER ENTRY SIDE ..... UNII AND BLOCK OR CONCNDTE WALLS AND OTHER GROUNSES SURFACES, POWER ENTRY SIDE ............. REQUIRED CLEARANCE FOR OF'_ATION 10668 MiLLiMETERS [i_i 9140 [3600] 9i40 [3600} EVAP DOll ASCBSS SiDE ....................... PO_ER ENIRY SISE ....... (EXCEPT FOR NED RDOUIREMENTS) UNIt TOP .......... S;SE OPPOSITE SUETS ...................... DUCT PANDL t [4E00i AND SERVICING 9!40 [3600} 9140 [3600} 304 8 [i2 00]= =_INiMU_ D[SIA_CESziP U_iT _S PLACEO LESS INAN 304 8 [12 00i PROM WALL SYSTDM,TNE_ STETS# PERFORMANCE MAYSE COMPROMISES TOP VIEW BI_4ENSIONS iN [] ARE IN INSBES 11938 _T98 6 63144] I FUL OUViR e 22 R [0 88] BIA HOLE CONTROL ENTRf_ 7 5703 [2245 ST62 [10 i t87] ll7 7 - ! [iEB5i 8310 [B2 72i LEFT SIDE VIEW i ! :t I 42 T 87/ {3 43} 3266 ! IR4T issoi 1_ 681 BRAN EI /96[0 75] N P T X R2 060 8T D P i• "SUPeL_ BUCT j OPENING j, i i 4020 [IV 8Si 2 l- "''"'_--" \ £O_PRESSOR SLOWER, ELECTRIC & ELECTRICAL ACCESS PANEL RDAT L_:LID` 50 [0201 4 I_L'"/ 898 _ [3 63] L 8496 [9 83] _ 650 6 [21 67] i _ 649 6 [9¸83) [4 S11 1226 3 148 28] RIGHT SIDE VIEW FRONT VIEW REAR VIEW AO5299 Fig.6 - 50CR024-036 Unit Dimensions _- i 355 8 114 01] i 208 230 ] 60, 808/230 3 60 208 230 _ 60, E08/230 3 60 50CR0_8 50CRO_O RETURN I CORNER _E GiT 88/39 A _Jg£T J_ WT ELECIRICAL CHARACTER_S_ICS UNIT 50CR042 9i68/30 8 _i1 208230160, 208/230 3 60 UNII HEGHI '2 I'k ,i,, ,.° ,, ,,, OF GRAVITY MMIiN ol,o,o,,o ol., o.,,, REQUIRED CLEARANCES TO COMBUSTIBLE NATL LBS /1(6 8 ] 106/40 C ii_77/80O 2 TOP OF _NI/ DUCT SIO[ Or 8_iT ................ SiDE OPPOSIT[ DUCTS........................ _01TOM OF _NiT ................................ ELEC/RIC _EAT PANEL 127157 _ 177/80 ] I_EC. REQ_RfD 611277 CENER M/LL/M[iERS [IN) 355 _ i_4 00! 5O 8 12 00} 355_ 1i4001 127 1050} 9_ 4 136 00/ EI.EARANEEE. _EY_EEN 8N/iS. PO_ER EN/RY SiSE UNIT ANO UNGROUNDEDSURFACES< ?O_ER ENTRY S_E UNiT _0 BLOC_ OR CONCRETE _LLS AND OTHER GRBUNDE_ $_RFACES POWfR ENTRY SiDE ............. REQUIRED CL_RANCE .... _iNI_UM TOP VIEW /066 8 14_00} FUR OPI_RATItll AND S[!tVI_NG _ILtI_ETERS [iNI 914¸0 13600i 914 0 _36 00/ EVAP COIL ACCESS S/bE ......................... POW[R ENTRY SIOE (EXCEPT £OR NEC REOUIREMENTS) UNiT TOP .................................... SiDE OPPOSITE _UCTS ............. DUC/ PANEL t MILLIMETERS IiNi 1066 8 _42 00_ 014 0 130 00/ 914¸0 914¸0 30_8 136001 13600} lie 00/1 01STANCES:IF UNIT IS PLACED LESS TH_N 304_ [1200] _RO_ _ALL SYSTE_.IHEN SESTEM PERFORMANCE MAYBE COM?RO_ISED OIMENSiONS iN I0907 142 941 [1AR£ iN {NCRES [4700] FIELD ENTRY_ SERVICE PORTS \ 44 3 \ \ FULl¸lOUVER i [I 74i I 1193 t • F_LL LO_VE_ A • rgLi LOUVER L_m__ • 445 [I 75] OIA _o--a PO_ER ENIRY 070 2 i8442] 4070 I_EBU} 31 I)_CT _---87 COMPRESSOR, _LOWER, ELECTRIC BEAT & EIESTRICAL ACCESS PANE{ 12263 1_8281 ...................... FRONTVIEW RIGHTSIDE VIEW 3" !_-347 5 [13 68] _ {13831 _,4 , E [343] _35_2 ................................ LEFT SIDE VIEW _ \ _35/2 {13 REAR VIEW A05300 Fig. 7 - 50CR042-060 Unit l)imensions 837 Step 4--Rig and Place Rigging and handling reasons etc.). clue to the installation Only of this equipment can be hazardous location (roofs, for many elevated Field Installation BRACKET of Ri_in_ Bracket structures, 1. If applicable, remove unit from shipping carton. Leave top shipping skid on the unit for use as a spreader bar to prevent trained, should USE OF RIGGING Unit qualified handle crane operators and ground support staff the rigging straps from damaging the unit. If the skid is not available, use a spreader bar of sufficient length to protect the unit from damage. and install this equipment. When working with this equipment, observe precautions in the literature, on tags, stickers, and labels attached to the equipment, and any other safety precautions 2. Remove 4 screws in unit corner posts. that might apply. 3. Attach each of the 4 nmtal rigging Training for operators of the lifting equipment not be limited to. the following: should include, 1. Application of the lifter to the load. and adjustment lifts to adapt to various sizes or kinds of loads. 2. Instruction in any special operation 3. Condition all applicable temperature, safety codes. brackets rain lip (See Fig. 8). Use the screws removed to secure the brackets to the unit. under the panel in step 2 above of the or precaution. of the load as it relates to operation kit, such as balance, Follow gloves. but of the lifting etc. Wear safety shoes and work PROPERTY HAZARD Failure to follow this warning injury/death or property damage. Rigging adequate INSPECTION DAMAGE bracket lifting. MUST could be under the result rain in personal lip to provide Prior to initial use, and at monthly intervals, all rigging brackets and straps should be visually inspected for any damage, evidence of wear. structural deformation, or cracks. Particular attention should be paid to excessive wear at hoist hooking points and load support areas. Brackets or straps showing any kind of wear in these areas must not be used and should be discarded. PROPERTY Failure DAMAGE to follow injury/death HAZARD this warning or property could result in personal damage. Do not strip screws when re-securing the unit. If a screw is stripped, replace the stripped one with a larger diameter screw ELECTRICAL SHOCK (included). HAZARD Failure to follow this warning or death. could result in personal injury of Unit 1. Bend top of brackets Before installing or servicing system, always turn off main power to system. There may be more than one disconnect switch. Turn off accessory heater power switch if applicable. Tag disconnect Ri_,_in_/Liftin_ switch with a suitable warning label. the corner 2. Attach opposite down approximately 30 degrees from posts. straps of equal length to the rigging brackets at ends of the unit. Be sure straps are rated to hold the weight of the unit (See Fig. 9). 3. Attach a clevis of sufficient strength in the middle of the straps. Adjust the clevis location to ensure unit is lifted level with the ground. UNIT FALLING HAZARD Failure to follow this warning or death. Never stand beneath rigged could result in personal injury 4. After unit is securely in place detach rigging straps. Remove corner posts, screws, and rigging brackets then reinstall screws. units or lift over people. INTRODUCTION UNIT The lifting/rigging bracket is engineered installed only on Small Packaged Products. used to rig/lift a Small elevated structures. PROPERTY DAMAGE Packaged Product FALLING and designed to be This bracket is to be Failure onto injury/death roofs or other to follow HAZARD this warning or property could When straps are taut, the clevis should inches above the unit top cover. could result in personal Rigging brackets for one unit use only, When removing unit at the end of its useful life, use a new set of brackets. in personal be a minimum of 36 After the unit is placed on the roof curb or mounting pad. remove the top crating. On 50CR060 units only, 2 wire ties fastened to the outdoor coils and reversing valve/accumulator assembly must be HAZARD Failure to follow this warning injury/death or property damage. result damage. a cut. Remove access wire the left and front louvered panels and corner post to ties. The wire tie to be cut on the left is located approximately 4 in. down the tube sheet. The wire tie to be cut on the right is located approximately 6 in. down the tube sheet. n DETAIL A C03017 Fig. 8 - Rigging Bracket Under Unit Rain Lip MINIMUM HEIGHT: 36 UNIT HEIGHT SEE DETAIL A06113 MAXIMUM UNIT SIZE SHIPPING WEIGHT Lb Kg 500R024 372 169 500R030 372 169 500R036 395 179 500R042 462 210 500R048 485 22O 50CR060 521 236 Fig. 9 - Suggested Rigging Step5--Select andInstallDuctwork CONVERTING The design and installation of the duct system must be in accordance with the standards of the NFPA for installation of non-residence type air conditioning residence and ventilating systems, type. NFPA 90B and/or local codes Select and size ductwork, supply-air registers, NFPA 90A HORIZONTAL DOWNFLOW (VERTICAL) DISCHARGE DISCHARGE UNITS TO UNITS or and ordinances. and return air grilles ELECTRICAL SHOCK HAZARD according to ASHRAE (American Society of Heating, Refrigeration. and Air Conditioning Engineers) recommendations. Failure to follow this warning or death. The unit has duct flanges on the supplythe side of the unit. Before installing or servicing system, always turn off main power to system. There may be more than one disconnect and return - air openings on switch.Turn ELECTRICAL OPERATION Failure to follow this warning or death. off accessory could result in personal injury NOTE: These panels electrical knockout. 3. Use a screwdriver bottom 4. Ensure Step 6--Provide ductwork, consider Recommended 2. Avoid abrupt change sizes for filters are shown duct size increases in duct size adversely IMPORTANT: Use flexible unit to prevent transmission NOTE: the following: 1. All units should have field-supplied filters or accessory rack installed in the return-air side of the filter unit. in Table 1. and reductions. Abrupt affects air performance. connectors between of vibration. ductwork Use suitable and install lockout tag before and gaskets to ensure weather tight and airtight seal. When electric heat is installed, Ensure are held in place and hammer of the composite to remove are in place to an the panels in the to block off the Disposal that condensate-water The units dispose of condensate tabs similar (See Fig. 11). for Condensate with local codes, restrictions, with return and supply unit base. the side duct covers air openings injury switch if applicable. 2. Remove side duct covers to access bottom knockouts. horizontal and installing heater power 1. Open all electrical disconnects starting any service work. HAZARD For vertical supply and return units, tools or parts could drop into ductwork, therefore, install a 90 degree turn in the return ductwork between the unit and the conditioned space. If a 90 degree elbow cannot be installed, then a grille of sufficient strength and density should be installed to prevent objects from falling into the conditioned space. Units with electric heaters require 90 degree elbow in supply duct. When designing could result in personal disposal methods comply and practices. through a 3/4 in. NPT female fitting that exits on the compressor end of the unit. Condensate water can be drained directly onto the roof in rooftop installations (where permitted) or onto a gravel apron in ground level installations. Install a field-supplied condensate trap at end of condensate connection to ensure proper drainage. Make sure that the outlet of the trap is at least 1 in. lower than the drain-pan condensate connection to prevent the pan from overflowing. Prime the trap with use fireproof canvas (or similar heat resistant material) connector between ductwork and unit discharge connection. If flexible duct is used. insert a sheet metal sleeve inside duct. Heat resistant duct water. When using a gravel apron, make sure it slopes away from the unit. connector (or sheet metal sleeve) heater element. the unit, install a field-supplied 2-in. trap at the condensate connection to ensure proper drainage. Condensate trap is available 3. Size ductwork 4. Seal, insulate, insulate through Air must extend for max cooling and weatherproof 24-in. from electric air quantity (400 cfm/ton). all external ductwork. Seal, and cover with a vapor barrier all ductwork passing conditioned spaces. Follow latest Sheet Metal and Conditioning Contractors National Association (SMACNA) and Air Conditioning Contractors Association (ACCA) minimum installation standards for residential heating and air conditioning systems. 5. Secure all ducts to building structure. Flash, weatherproof, and vibration-isolate duct openings in according to good construction practices. wall or roof If the installation requires draining the condensate water away from as an accessory or is field-supplied. Make sure that the outlet of the trap is at least 1 in. lower than the unit drain-pan condensate connection to prevent the pan from overflowing. Connect a drain trough using a minimum of field-supplied 3/4 -in. PVC or field-supplied 3/4 -in. copper pipe at outlet end of the 2 -in. trap (See Fig. 12). Do not undersize the tube. Pitch the drain trough downward at a slope of at least i in. for every 10 ft. of horizontal run. Be sure to check the drain trough for leaks. Prime beginning of the cooling season start-up. the trap at the n Table 1--Physical Data - Unit 50CR UNIT SIZE 024 030 036 042 048 NOMINAL CAPACITY (ton) OPERATING WEIGHT (lb.) Compressor Refrigerant (R-410A) Quantity (lb.) REFRIGERANT METERING DEVICE 2 2-1/2 3 3-1/2 4 5 350 350 373 440 463 499 7.5 8 9.5 t0.8 11.5 14.0 Scroll TXV ORIFICE OD (in.) OUTDOOR 060 0.035 (2) 0.035 (2) 0.038 (2) 0.038 0.088 (2) (Left 0.046 0,042 (Left OD Coil) 0.052 (Right OD Coil) OD Coil) (Right OD Coit) COIL 2...21 2...21 2...21 2...21 2...21 2...21 Face Area (sq. ft,) OUTDOOR FAN 12.3 12.3 13.6 15.4 17.2 19.4 Nominal Cfm Diameter 27O0 27OO 280O 28O0 3300 3300 22 22 22 22 22 Rows...Fins/in, Motor HP (RPM) INDOOR COIL I/8 (825) 3...15 Rows...Fins/in, Face Area (sq. ft,) INDOOR BLOWER 1/8 (825) I/8 3...15 3.7 (825) I/8 (825) I/4 22 (1100) I/4 (1100) 4...15 3...15 4...15 4...17 3.7 4.7 4.7 5.7 3.7 Nominal Airflow (Cfm) Comfort Variable Efficiency Max Size (in,) Motor HP (RPM) HIGH-PRESSURE SWITCH (psig) Cutout Reset (Auto) LOSS-OF-CHARGE/LOW-PRESSURE (Liquid based on Comfort Roll back (see User Interface instructions for more information). 700 875 1050 1225 1400 800 1000 1200 1400 1600 2000 10xt0 10x10 tlx10 1tx10 1tx10 1tx10 1/2 t/2 3/4 3/4 3/4 650 -+ 15 420 -+25 1750 1 SWITCH Line) (psig) Cutout 20-+ 5 45-+ 10 Reset (Auto) _Required Return-Air Filters (in.)* 20x24x1 20x24x1 24x30x1 24x36x1 24x36x1 24x36x1 Throwaway filter sizes shown are based on the larger of tile ARI Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300 ftiminute for throwaway type or 450 ft/'mimee for high capacity type. Air filter pressure drop for non standard filters must not exceed 0.og in. wg. USER INTERFACE TOP COVER DISCONNECT PER NEC* _FROM GASLINE *NEC - NATIONAL ELECTRICAL CODE A06091 Fig. 10 - Typical Installation 10 UNIT COMPONENT DAMAGE Failure to follow this caution being installed. i. Make all electrical ANSI/NFPA governing connections 2. Use connections Electrical only copper Covers and/or On t ROUTING phase Trap SHOCK POWER HAZARD Connect could result in personal wiring injury LEADS GROUND the ground ROUTING The unit including Interface instruction POWER a separate electrical service with for wire sizing The field-supplied disconnect high-voltage (See Table 2 for electrical may be mounted Instructions connections. Operation provided with of unit on improper may cause unit damage the accessory a data). on the unit over the line voltage may be Service for electrical constitutes service abuse WIRES on the low voltage connections to the User guide. transformer supplies 24-v power for complete system accessory electrical heater. A fuse is provided in the 24-v (See Fig. 19); see the caution label on is factory wired for 230-v operation. If supply voltage is 208-v, rewire transformer primary in Special Procedures for 208-v Operation section. inlet hole (See Fig. 6 and 7). If the unit has an electric heater, a second disconnect required. Consult the Installation, Start-Up, and screw in the low-voltage hole provided into unit (See Fig. 6 and 7). Connect user interface leads to unit control power leads as shown in Fig. 14. field-supplied, waterproof disconnect switch mounted at, or within sight from the unit. Refer to the unit rating plate, NEC and local codes for maximum fuse/circuit breaker size and minimum circuit amps (ampacity) SCREW Form a drip-loop with the control leads before routing them into the unit. Route the low voltage control leads through grommeted, CONNECTIONS have TO GROUND (UI), refer to the UI installation circuit on the control board the transformer. Transformer must LEAD lead to the chassis using the ground CONTROL Protection Association (latest edition) (in Canada, Canadian Electrical Code CSA C22.1) and local electrical codes. unit INTO UNIT splice box (See Fig. 14 and 17). For detailed The ``vires. entry side panel. See Fig. 6 and 7 for location and size. For single-phase units, connect leads to the black and yellow ,,vires ; for 3 -phase units, connect the leads to the black, yellow, and blue wires. The unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of an electrical wire connected to the unit ground screw in the control compartment, or conduit approved for electrical ground when installed in accordance with NEC, ANSI/NFPA American National Standards Institute/National Fire HIGH-VOLTAGE power to unit is within operating conduit termination at the duct panel must be watertight. Run the high-voltage leads through the power entry knockout on the power Connections Failure to follow this warning or death. between and unit. DO imbalance. as high-voltage CONNECTING ELECTRICAL switch Use only copper wire between disconnect and unit. The high voltage leads should be in a conduit until they enter the duct panel; cg9013 Electrical for connections disconnect WIRE. 5. Do not damage internal components when drilling through any panel to mount electrical hard``vare, conduit, etc. MIN, Step 7--Instan local 4. Insulate low-voltage ``vires for highest voltage contained within conduit when lo``v-voltage control ``vires are in same conduit Fig, 12 - Condensate with NEC voltage range indicated on unit rating plate. On 3-phase units, ensure phases are balanced within 2 percent. Consult local power company for correction of improper voltage A05301 1" (25mm) in accordance diagram. conductor 3. Be sure that high-voltage Fig. 11 - 50CR with Duct Covers to the unit Code Part i and applicable Refer to unit wiring field-supplied electrical NOT USE ALUMINUM Ducl may result in damage (latest edition) and local electrical codes such wiring. In Canada. all electrical must be in accordance with CSA standard ('22. i Canadian codes. HAZARD and that could affect warranty. 11 as described Table V-PH-HZ UNIT 2--Electrlcal Data--50CR ELECTRIC VO LTAG E RANGE SIZE COMPRESSOR MIN MAX RLA LRA t87 253 13.5 61 .O OFM IFM FLA FLA NOMINAL 208/230-1-60 0.9 4.3 208/230-1-80 187 253 15.9 73.0 253 18.9 83.0 0.9 4.3 0.9 8.8 036 187 253 12.2 77.0 50/50 5,4/7,2 26.0/30.0 54.8/59.6 60/60 7.5/10,O 36.1/41.7 67,2/74.2 70/80 25.1/25.1 30/30 18.1/20.8 47.8/51.1 50/60 5.4/7.2 28.0/30.0 57,6/82.6 60/70 7.5/10.0 38.1/41.7 70.2/77.2 80/80 29.5/29.5 35/35 18.1/20,8 52,1/55.6 60/60 5.4/7.2 28.0/30.0 82,0/87.0 70/70 7.5/10.0 36.1/41.7 74.7/81.6 80/90 11.3/15.0 54.2/62.5 97.2/107.7 100/110 3,8/5 1.8 6.8 208/230-1-60 253 22.4 t05.0 0.9 6.8 042 30/30 38.7/38.7 45/45 7,5/1 O,O 20.8/24.1 49,7/53.7 50/60 11.3/15.0 31.3/36.1 82.7/88.8 70/70 35.7/35.7 253 15.4 88.0 0.9 8.8 45/45 187 253 21.3 109.0 1.6 8.8 048 58,3/81.7 70/70 5.4/7.2 28.0/30.0 88.2/73.2 80/80 7.5/10.0 36.1/4t 80.8/87.8 11.3/15.0 90/90 54.2J82.5 108,4/118.8 110/125 15.0/20.0 72.2/83.3 128.0/139.9 150/150 27.0/27.0 35/35 10.4/12,0 40,0/42.0 50/50 7,2/10.0 20.8/24.1 53.0/57.0 80/60 tl.3/15,0 31.3/36.1 66.0/72.1 70/80 15.0/20.0 41.6/48.0 78,9/86.9 80/90 35.0/35.0 45/45 187 253 14.7 91.0 1.6 8.8 187 253 26,9 145.0 1.5 9.t 060 57.6/61.1 70/70 5.4/7.2 28.0/30.0 87.5/72.5 80/80 7,5/10.0 36.1/41.7 80.2/87.1 90/90 11.3/15.0 54.2J82.5 102.7/118.2 110/125 15.0/20.0 72.2/83.3 125.3/139.2 150/150 28.8/26.8 35/35 187 253 17.6 123.0 1.5 9.1 12 -/- 3.8/5.0 10.4/12.0 89.8/41.8 50/50 7,5/10.0 20.8/24.1 52.8/56.8 80/60 tl.3/15.0 31.3/36.1 65.9/71.9 70/80 15.0/20.0 41.8/48.0 78.7/86.7 80/90 44.2/44.2 80/60 -/- 3,8/5,0 18.1/20.8 68.8/70.3 5.4/7.2 28.0/30.0 78.7/81.7 90/1 O0 80/90 89.4/96.3 100/110 7,5/10.0 38.1/41.7 tl.3/15.0 54.2J82.5 ttl.9/122.4 t25/125 15.0/20.0 72.2/83.3 184.5/148.4 150/150 34.8/34.6 40/40 -/- 208/230-3-80 -/18.1/20.8 -/- 208/230-1-60 -/- .7 3,8/5,0 -/- 208/230-3-60 -/18.1/20,8 -/- 208/230-1-60 -/- 3.8/5.o 3.8/5.o 187 -/- 23.7/23.7 -/- 208/230-3-60 -/- 10.4/12,0 3,8/5,0 -/- t87 -/- MOCP 30/30 -/208/230-3-80 MCA 44.8/48.1 3.8/5 187 FLA 22,1/22.1 -/- 208/230-1-60 POWER 18.1/20.8 3.8/5 -/030 POINT SUPPLY kW* -/- 024 SINGLE HEAT -/- 3,8/5,0 10.4/12,0 47.6/49.6 60/60 7,5/10.0 20.8/24.1 60.7/84.7 70/70 11.3/15.0 31.3/38.1 73.7/79.7 t 5, 0/20.0 41.6/48.0 86.6/94.6 80/80 90/1 O0 EXAMPLE: Supply voltage is 230-3-60. A B C AB = 228 v FLA -LRA -MCA -MOCP -RLA -- Full Load Amps Locked Rotor Amps MinimumCircuitAmps Maximum Overcurrent Rated Load Amps LEGEND AC = 227 v ,, @US Lw Average Voltage = 228 + 231 + 227 3 BC = 231 v = 68._6 g Protection = 229 NOTES: Determine maximum (AB) 229- 228 = (BC) 231 - 229 = (AC) 229- 227 = Maximum deviation 1. In compliance with NEC (National Electrical Code) requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440, the overcurrent protective device for the unt sha be Power Supply fuse. The CGA (Canadian Gas Association) units may be fuse or circuit breakeE 2. Minimum wire size is based on 60 C copper wire. Ifother than 60 Cwire is used, or if length exceeds wire length in table, determine size from NEC. 3. Unbalanced 3-Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percentage of voltage imbalance percent % Voltage Imbalance deviation v v v 2 v. from average voltage. of voltage imbalance 2 = 100 x -229 = 0.8% This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%. % Voltage imbalance = 100 x max voltage deviation from average voltage average voltage . Determine 1 2 2 is IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately. Heater capacity (kW) based on heater voltage of 208v & 240v. If power distibution voltage to unit varies from rated heater voltage, heater kW will vary accordingly. C03014 Fig. 13 - Electrical User Interface Infinity Data Legend Control Board : Outdoor Air Therrnisto[ (if used) m m m Humidifier (Optional) N LEGEND Field Control-Voltage Wiring A05302 Fig. 14 - Control Voltage Wiring 13 Connections II UN!T COMPO_£N_ ARRANGEMENT ............ LEGEND IZ3 Fq k_S D } > SW!TCH SETTINGS PR[SS_£ES_]gC_ _VS _lXrSl_ WlVU ,o_s co.,r_ss_, orr m_, 2 SEE_RIC_P_GESro_ USE_ I_TE_E r_ G _E_!ZED SEO_CE _ S_BSAS[S _,r,os, _, ,e,,,_,e ,o,,_, ,, _r ,s cosr_ C_D _TUZ_ G _E EN_RGJZ_ ! 50CR500007 ] 7.0 A05304 Fig. 15 - Wiring SchematicsISOCR 14 Single Phase II BkN -- COSTROL BOARD _, ............LEGEND )viDooii_41_COmPONEnT ARRANGEMENT --* FIEL_ pO_R _RING _o_P _O_ESSO__o_o_ _P l_IO0 /AN _0 0 E_ w G G E_ERGIZ_D _E E_ER_IZ_O CLOSES _AT 1 O_E_ 150CR500005 ]5.0 A05259 Fig. 16 - Wiring Schematics-50CR 15 Three Phase GROUND SCREW (INSPLICE BOX) INSTALLATION A. Accessory Electric GROUND LEAD ACCESSORY SINGLE-PHASE CONNECTIONS TO DISCONNECT PER NEC L1 ...... 3-PHASE CONNECTIONS L3 factory-approved -- _BLK-- NOTE: L2 Heaters Electric heaters may be installed in 50CR with electric heater package. See - - - -- _BLU-- Units factory-supplied opening. This condensation. _YEL-- B. Outdoor NOTE: Use copper wire only. LEGEND NEC - National Electrical Code - - Field Wiring _,_ Splice Connections electric per instructions supplied unit rating plate for heater kits. installed without electric heat Air Thermistor While the installation using the Infinity control have a over heater of exterior (OAT) A 2-screw terminal strip is provided for connection temperature thermistor. This strip is marked OAT. NOTE: should sheet metal block-off plate installed reduces air leakage and formation of an outdoor of an outdoor temperature sensor OAT terminals is optional, certain board C99057 Fig. 17 - Line Power Infinity features (ComfortHeat, Connections control) electric heat lockout, auto humidity will be lost. OAT input is used to supply outdoor temperature data for system level functions and for temperature display on User Interface. Using two ,,vires of field-supplied lead of thermistor to one screw remaining screw terminal: strongly recommended thermistor to eliminate thermostat wire cable, wire one terminal and the other lead to there is no polarity to be observed. It is that two ,,vires be used to connect the noise interference in temperature reading. If there are not two spare ,,vires available in cable, one wire may be used to connect thermistor to OAT screw terminal 1 and the other lead of the thermistor can be wired to 24-vac COM (C) wire. OAT screw terminal 1 is terminal located closest to the ABCD system communications and is marked with a small number 1 next to the terminal strip. NOTE: Mis-wiring OAT inputs will not cause damage to either Infinity control or thermistor. If the thermistor is wired incorrectly, no reading correctly C. will appear for normal Humidifier The Infinity at User Interface. Re-wire thermistor operation. Connections control board terminal marked HUM is provided for low voltage (24-vac) control of a humidifier. No humidistat is required as User Interface monitors indoor humidity. When commanded to operate humidifier, the unit control will energize the HUM output to turn humidifier on and de-energize HUM output turn humidifier off. Wire HUM and C terminals directly humidifier as shown in Fig. 14. SPECIAL Be sure unit disconnect AO530S Fig. 18 - Control Plate Disconnect wiring The low-voltage circuit is fused by a board-mounted automotive Connect 200-v. fuse placed in series with transformer SEC1 and R circuit. The C circuit of transformer circuit is referenced to chassis ground through a printed circuit run at SEC2 and metal control board mounting eyelets. Check to be sure control both factory-installed screws. board is mounted PROCEDURES securely using 16 FOR 208-V to to OPERATION switch is open. the yellow primary lead from the transformer. See unit label. (See Fig. 15, 16 and 18) the yellow primary lead to the transformer terminal labeled 3. Make the following SEO-2 a. Inspect for shipping and handling damages, such broken lines, loose parts, disconnected wires, etc. o SEO-1 inspections: b. Inspect for oil at all refrigerant tubing connections as and on unit base. Detecting oil generally indicates a refrigerant leak. Leak test all refrigerant tubing connections using electronic leak detector, or liquid-soap solution. If a m } refrigerant Refrigerant leak is detected, Leaks section. see following Check for c. Inspect all field- and factory-wiring connections. sure that connections are completed and tight. d. Ensure wires do not touch refrigerant tubing Be or sharp sheet metal edges. e. Inspect coil fins. handling, carefully := 4. Verify the following o If damaged during shipping straighten fins with a fin comb. and conditions: a. Make sure that outdoor fan blade is correctly positioned in fan orifice (See Fig. 24). b. Make sure that condensate drain pan and trap are filled with water to ensure proper drainage. c. Make sure that all tools have been removed. and miscellaneous loose parts o 5. Compressors A03169 Fig. 19 - Detail of Printed Circuit or remove Board are internally compressor spring holddown mounted. 6. Each unit system has two Schrader-type PRE- START- Schrader high-side discharge UP Do not loosen bolts. ports, one low-side fitting located on the suction line, and one Schrader fitting located on the compressor line. Be sure that caps on the ports are tight. START-UP FIRE, EXPLOSION, ELECTRICAL SHOCK Step 1--Unit HAZARD Failure to follow this warning could result in personal or death and/or property damage. injury 1. Follow recognized safety practices and wear protective goggles when checking or servicing refrigerant system. 2. Do not operate compressor or provide any electric power to unit unless secured. 3. Do not electrical compressor remove sources ternainal cover is in place compressor terminal cover are disconnected and tagged. 4. Relieve and recover all refrigerant from system touching or disturbing anything inside terminal refrigerant leak is suspected 5. Never attempt to repair proceed as follows: a. Shut off electrical all under pressure. wear protective power before box if The amber LED located at bottom center of control adjacent to motor harness plug is Motor Status LED and it is labeled MOTOR. System goggles tubing with from unit. and system tubing at the end of this book right center of control to inspect and prepare the unit for initial start- up: and of short flashes indicates first digit of code. of long flashes second flashes indicates is 0.25 seconds. last short flash Start-Up digit of code. on. A long flash is i second on. and first long flash 6. The LED will be off for 2.5 seconds B. Control all access panels. on 2. The number 5. The time between second. Checklist shipped in upper 1. The number 4. The time between proceed as follows CAUTION. located 3. A short flash is 0.25 seconds Use the Start-Up 2. Read and follow instructions LED system communications status. Status Codes will be displayed the STATUS LED using the following protocol: unsweat remaining tubing stubs when Oil can ignite when exposed to torch supplied amber adjacent to System Communications connector (A,B,C,D) is the System Status LED and it is labeled STATUS. The green LED labeled COMM is also located adjacent to System Communications connector, below STATUS LED, and is used as an indicator of to unit and install lockout c. Cut component connecting cutter and remove component 1. Remove at the system user interface in text with basic troubleshooting instructions. Careful use of information displayed will reduce the need for extensive manual troubleshooting. A second tag. b. Relieve and reclaim all refrigerant from using both high- and low-pressure ports. d. Carefully necessary. flame. LEDs built into Infinity " control board provide installer or service person information concerning operation and/or fault condition of the unit control and ECM motor. This information is also available around compressor terminals. soldered connection while refrigerant system is under pressure. 6. Do not use torch to remove any component. contains oil and refrigerant 7. To remove a component, A. LED Description: and until Start-Up NOTE: Always check high- and low-voltage supply to the unit components. Check the integrity of the plug receptacle connections and unit wiring harness prior to assuming a component failure. and System before repeating is 1 code. Communications Troubleshooting: on all DANGER, and INFORMATION labels WARNING, attached On power up, green COMM to, or system communications with unit. 17 LED will be turned off until successful are established (this should happen within n 2. Recheck 10 seconds). Once conmmnications with User Interface are successful, COMM LED will be lit and held on. At the same time, amber STATUS LED will be lit and held continuously request for operating mode is received. on any time unit is in idle mode. The STATUS on until a are not successful proper time period motor faults The unit control D. Using and status The high- and low-voltage 2. Checkfuseoncontrolboardtobe LED does not light within proper time period Iffuse in this product WINDING consists of two parts: STATUS 2. Remove motor control could result in personal injury 3. Failing section module and unpainted any of these LED will be turned has failed internal procedure off. control start-up motor entire and unplug end should ECM motor module FAULT tests and must be replaced. OUTPUT SENSED "ON" detects a 24-vac WHEN of a 24-vac signal on either heater stage output Status (;ode 37 will be displayed on will turn off output and command To find the fault: 1. Stop all system operations winding stage 24-vac must at User Interface and check heater outputs. 2. Disconnect electric heater at power and check heater wiring for faults. See Status (;ode 36 for more information. exceed be The CODE 44. MOTOR MOTOR communication control TEST blower motor to supply an airflow determined to be safe for current operation mode with electric heaters energized. module: to be sure it is functional. section BOARD will correct. and it is not supplying signal, STATUS LED. Unit control STATUS tests, 4. Passing all of the tests, motor replaced. TURNS motor to provide unit operation and When the motor is commanded to CODE 45, CONTROL If unit control replaced. MOTOR to Unit control is provided with circuitry to detect presence signal on electric heater stage 1 and stage 2 outputs. plug. Motor shaft should turn freely, resistance between any two motor leads should be similar and resistance between any motor lead 100,000 ohms. connected STATUS CODE 37, HEATER NOT ENERGIZED: HAZARD to replace a motor motor winding is highest priority Status (;ode to be flashed. All existing faults, as well as a fault history, can be viewed at User Interface. After disconnecting power from the ECM motor, wait at least 5 minutes before removing the control section. Internal capacitors require time to discharge. 1. Check blower for highest priority code will be displayed on STATUS LED. Clearing the indicated fault when multiple faults exist will cause the next SECTION Failure to follow this warning or death. Before proceeding the wait provided below. Codes are listed in order of their priority, highest to lowest. Though multiple faults can exist at any time, only the the No other service SHOCK and Unit faults indicated by flashing codes on the amber system STATUS LED can be resolved using troubleshooting information Unit control ELECTRICAL down E. Unit Troubleshooting LED information aids and follow troubleshooting steps described below before replacing motor control module or entire motor. Motor control module is available as a replacement part. MOTOR itself Troubleshooting. control module and the motor winding section. Do not assunre motor or module is defective if it will not start. Use the designed-in VERIFY as The unit STATUS LED for the Status (;ode. Refer to the troubleshooting instructions for the indicated Status Code in Section E, Unit C. ECM Motor Troubleshooting used motor If the MOTOR LED is lit, flashing, and the motor does not run, or if the MOTOR LED is off and the motor is running, check the or shorting of the ABCD will not allow successful fuse to open. motor for airflow. If the MOTOR LED is lit, flashing, and the motor is running, or if the MOTOR LED is off and the motor is stopped, operation is normal and no motor fault exists. NOTE: Shorting or mis-wiring low-voltage system wiring will not cause damage to unit control or user interface but may cause low The ECM LED stop, the MOTOR and status 1. Check system wiring to be sure User Interface is powered and connections are made A to A, B to B, etc. and wiring is voltage a demand operate, the MOTOR LED will be turned on and will flash each time instructions are sent to the motor. When the motor is commanded to code is displayed, not shorted. Mis-wiring communications wiring communications. of blower to run the blower line and works with the unit control microprocessor and the STATUS LED troubleshooting infornration. is open, check system wiring before replacing it to be sure a short does not cause a failure of replacement fuse. If COMM maintains a lockout User Motor LED in Troubleshooting MOTOR comnmnication to be sure sureitisnotblown. will not cause will attempt 25 seconds, the motor will shut communications to be reestablished. code is not displayed; 1. Check system transformer the system is powered. using every five seconds, even when the motor is idle. If, during operation. the unit control does not communicate with the motor for more than C, Y. O, W terminal strip connections and will display Status (;ode 16, System Communication Fault, on amber STATUS LED. No further troubleshooting information will be available at User Interface until communications are re-established. LED does not light within pressure control will not operate electric heaters while a fault condition exists. The unit control communicates with the motor at least once exceeding 2 minutes, the Infinity control will only allow emergency heating or cooling operation using a common thermostat and the R, If COMM static Blower operation. for a period system screens with access panel in place. long as User Interface If. at any time, communications and service NOTE: LED will be airflow Interface alone can be and STATUS information. SLOWLY LED is COMMUNICATION connected to the FAULT blower motor line and works with the unit control microprocessor LED to provide unit operation and troubleshooting When motor is commanded to operate, the MOTOR LED will be turned on and will flash each time instructions are sent to the motor. 1. Low static pressure loading of blower while access panel is removed will cause blower to run slowly. Particularly at low airflow requests. This is normal, do not assume a fault exists. 18 When themotor iscommanded tostop, theMOTOR LED,,villbe turnedoff. TheMOTORLEDwill not flashto indicate communications when itisturned off. Unitcontrol isconstantly communicating withthemotor, even whenthemotorandMOTOR LEDareoff.If motordoes not acknowledge receipt ofcommunications, thecontrol willdisplay Status (;ode44 on STATUS LEDandcontinue to try to communicate with the motor.If motoracknowledges communication, status code willbecleared. If MOTOR LEDislitandflashing andmotor does notrun: 1.Check theSTATUS LED.If STATUS LEDisindicating a Status 44code, check themotor wiringharness forproper connection tocontrol andmotor receptacles. 2.Check motor wiringharness tobesure allwiringcomplies withwiringdiagram description, makes acomplete circuit fromconnector toconnector, andisnotshorted. 3.Check 12-vdc lowvoltage supply tomotor atpins1(+)and 2(-)ofmotor header connection tounitcontrol. Ifallchecks arenormal, unitcontrol isgoodand control module on motormayneed replacement. Check motorandMotorControl Module following theinstructions in Section C,ECMMotor Troubleshooting. Shorted ormis-wiring ofthelowvoltage motor harness wiring will notcause damage tounitcontrol ortomotor control module. If theMOTOR LEDisoff.STATUS LEDisindicating aStatus (;ode 44andmotor isrunning: 1.Disconnect themotor harness attheunitcontrol. If motor continues torun.unitcontrol isgood and control module on motor mayneed replacement. STATUS CODE 25,INVALID MOTOR / MODEL SELECTION 2. If symptoms 3. Check NOTE: is incorrect (;ODE 26. INVALID wiring of resistor harness at unit value greater than assembly. is an approved size for unit Unit control will not operate electric heater until this Status If the heater size is set through the heater will be operated desired, as a single the User Interface. stage heater. If staging is the IDR value must be read in by the unit control. STATUS CODE 36. HEATER ENERGIZED OUTPUT NOT SENSED Unit control is provided with circuitry to detect presence signal on electric heater stage 1 and stage 2 outputs. WHEN of a 24-vac If unit control energizes either heater stage and does not detect the 24-vac signal on output, Status Code 36 will be displayed on the STATUS LED, unit control will continue to energize heater output(s) energized and adjust blower operation electric heat stage(s). to a safe airflow level for Unit control or To find the fault: 1. Check for 24-vac on heater stage outputs. sensing circuit may be bad. NOTE: It may be useful procedure Code to disconnect 16 enabling which heater operation. electric When heater troubleshooting is energized outputs to force Status heat mode. It is difficult unit is operated both Terminal as an electric the system communications of emergency output heaters, together. or not energized in emergency are energized strip inputs to control to know in normal heat mode using and de-engergized can then be connected W to turn on both electric heat outputs. circuits can then be checked to resolve R to Heater output sensing Status Code 36 or 37 problems. on STATUS STATUS LED. for model size, motor must HEATER CODE If MOTOR 41, BLOWER MOTOR LED is lit and flashing FAULT and motor does not run: 1. Check STATUS LED. If STATUS LED is indicating Status Code 41, motor control has detected that the motor will not come up to speed within 30 seconds of being commanded to run or that the motor has been slowed to below 250 rpm for more than 10 seconds after coming up to speed. Motor be replaced with proper size motor. Unit control will not respond to operation requests until this fault condition is resolved. STATUS for proper Code is resolved. 2. If model size data is missing (as is the case when a replacement control board is installed), system User Interface will prompt installer to enter correct model size from a list of valid sizes. size wiring for unit size or size data is invalid, Status Code 25 will be displayed 3. If motor disconnect and check for a resistance 4. Make sure heater size installed and size installed. On initial start-up, unit control shall poll motor for its size data and check unit size data stored in unit control memory. 1. If motor size is incorrect persist, control board 5000 ohms. wiring harness and unit control are operating properly, do is not rubbing the not replace. 2. Check SIZE to be sure that the blower wheel housing. On initial power-up, unit control will write into memory electric heater size as read from heater if heater is provided with Identifier 3. Check 4. Check that this is correct will establish that the an electric heater accessory. Upon section following instructions in the motor control module may need replacement. CODE 16. SYSTEM COMMUNICATION FAULT Code 26 will be If, at any time, system communications period exceeding 2 minutes, the unit If heater installed is equipped with a resistor connected to pins i and 2 of heater harness connector and status code 26 is displayed on STATUS LED: connections windings C, ECM Motor Troubleshooting. If all these checks are normal, STATUS 1. Check wiring harness secure. motor Section choosing negative option, installer will be prompted to select heater size installed from a list of valid heater sizes for unit size installed. Status shaft is not seized properly). connected to pins 1 and 2 of heater harness connector. If no resistor is found, system User Interface will prompt installer to verify that no If heater ID resistor value read is invalid, displayed on STATUS LED. to be sure that the motor (motor control module must be renroved and electronics disconnected from windings to perform this check Resistor (IDR). Heater size must be valid for combination of indoor and outdoor components installed. Unit control will read IDR value heater is installed. Verifying unit is operating without motor to be sure connections emergency thermostat, are not successful control will only heating or cooling operation using a common and the R, C, Y. O, W terminal strip connections and,,vill display Status code 16 on the amber STATUS are for a allow LED (see section E, Emergency Heating and Cooling Modes). No further unit troubleshooting information will be available at the User Interface until communications are re-established. 19 Check system wiringtobesure theUser Interface ispowered and connections aremade AtoA,BtoB.etc., and wiring isnotshorted. Mis-wiring orshorting oftheABCD communications wiring will notallow successful communications. Correcting wiring faults will clear thecode andre-establish communications. Shorting ormis-wiring thelowvoltage system wiring willnotcause damage tounitcontrol ortoUser Interface butmaycause thelow voltage fusetoopen. STATUS (;ODE 46,BROWNOUT CONDITION If thesecondary voltage ofthetransformer fallsbelow 15-vac for aperiod exceeding 4seconds, Status Code 46willbedisplayed on STATUS LEDandtheUserInterface willcommand thecontrol board toturnoffYoutput controlling compressor. Whensecondary voltage risesabove 17-vac formorethan4 seconds, thebrownout condition iscleared andnormal system operation will resume subject to anyminimum compressor off-delay function which may beineffect. Brownout does notaffect blower orelectric heater operation. STATUS CODE 53,OUTDOOR AIRTEMPERATURE SENSOR FAULT IfanOATsensor isfound atpower-up, input isconstantly checked tobewithinavalidtemperature range. If sensor isfound tobeopen orshorted atanytimeafter initialvalidation, Status (;ode 53willbe displayed atamber STATUS LED. Check forfaults inwiringconnecting sensor toOATterminals. Using anOhmmeter, check resistance ofthermistor forashortor open condition. If thermistor isshorted oropen, replace it toreturn thesystem to normal operation. Iffaultisinthewiring connections, correcting the faultwillclear thecode andreturn thesystem tonormal operation. NOTE: Iffaultcondition isanopen thermistor orawiring problem thatappears tobeanopen thermistor andthepower totheunitis cycled off.thefaultcode willbecleared onthenextpower-up but thefaultwillremain andsystem operation willnotbeasexpected. Thisisbecause on power-up, the unit control cannot discern the difference between Step 2--Sequence NOTE: Once should not be started interface. The Interface User uses humidity pressure other the indoor blower at requested Install a bi-flow opened for repair. be adjusted and indoor and outdoor temperature the system operation for occupant literature comfort and system efficiency. Refer for further system control details. to User Interface Airflow during be greater electric heater operation must remaining minimum level for safe operation. If User Interface instructs unit to turn on electric heat and the requested airflow is less than the minimum level the unit control will override requested value. delay built ports to relieve system refrigerant. accepted practices. the system has been for leaks using an approved method. and reclaim refrigerant if no Puron (R-410A) refrigerant, using a cylinder or accurate scale. Refer to unit rating plate for required charge. Adjustments Complete the required procedures given in the Pre-Start-Up section before starting the unit. Do not jumper any safety devices when operating the unit. Do not operate the unit in cooling mode when the outdoor temperature is below 40°F (unless accessory. low-ambient kit is installed). Do not rapid cycle the compressor. Allow 5 min. between "on" cycles to prevent compressor damage. CHECKING COOLING AND HEATING CONTROL OPERATION Start and check the unit for proper control 1. Place room UI SYSTEM position. Observe operation switch or MODE that blower motor is placed in FAN ON position as follows: control in OFF starts when FAN mode and shuts down within (030-060 size) or 30 sec (024 size) when switch is placed in AUTO position. FAN 60 sec MODE 2. Place system switch or MODE control in HEAT position. Set control above room temperature. Observe that compressor. outdoor fan, and indoor blower motors start. Observe that heating cycle shuts down when control using an automatic changeover setting is satisfied. room thermostat. place both SYSTEM or MODE control and FAN mode switches in AUTO positions. Observe that unit operates in cooling mode when temperature control is set to "call for cooling" (below room temperature), and unit operates in heating mode when temperature control is set to "call for heating" (above IMPORTANT: oriented. Unit room temperature). Three-phase, must be scroll checked compressors to ensure proper are direction compressor 3-phase power lead orientation. If not corrected within 5 minutes. the internal protector will shut off the compressor. The 3-phase power leads to the unit must be reversed than a it The Leaks refrigerant system leaks are found. Step 4_Start-Up compressor filter drier whenever 5. Charge unit with volumetric-charging airflow for most modes. from nominal using indoor humidity data to optimize system 4. Evacuate additional data The nominal requested airflow will be 350 cfm per ton of nominal cooling capacity as defined by unit size. Actual airflow request will elapsed. mode. and low-pressure and reclaim NOTE: supplied from indoor and outdoor system components to control heating or cooling system for optimum comfort. The unit will be commanded by User Interface to supply airflow. The unit will operate have leaks and charge the unit as follows: 2. Repair leak following 3. Check heating for Refrigerant 1. Use both high- 3. When and and then has stopped, 4 minutes there is a 5-minute Locate and repair refrigerant in Step 1--Start-Up. temperature, until for heat pump Step 3--Check an open sensor or ifa sensor is not installed. described Additionally, into the control The packaged heat pump is designed for installation with a communicating User Interface. This unit will not respond to commands provided by a common thermostat except under certain situations has started again cooling cycle remains "on" until the room temperature drops to point that is slightly below the cooling control setting of the user of Operation emergency the compressor turning backwards, the difference discharge may be dramatically 2O pressures between to correct rotation. compressor When suction and lower than normal. OUTDOOR INDOOR COIL TXV COIL in Meterin( Position LCS BPS Bypass Position LEGEND HPS - High Pressure Switch LCS - Loss of Charge Switch Accurate#Metering ] Arrow indicates Device direction of flow C03011 Fig. 20 - Typical Heat Pump OUTDOOR Operation, Cooling Mode INDOOR COIL COIL _,-- TXV in Bypass Position .4 LCS HPS Metering Position LEGEND HPS - High Pressure Switch LCS - Loss of Charge Switch AccuratePMete_ing Device ] Arrow indicates direction of flow C03012 Fig. 21 - Typical Heat Pump Operation, 21 Heating Mode CHECKING AND ADJUSTING REFRIGERANT The refrigerant system is fully charged with refrigerant and is tested and factory sealed. NOTE: Adjustment of the refrigerant the unit is suspected charging CHARGE Puron R-410A charge. pressures in cooling attached to the outside suspect in heating informative mode mode, plate amount. the physical only. A refrigerant of the service data reclaim indicated When adjustment very minimal. condition insufficient The The label is attached is level is DEFROST to The defrost from mode to the outside of the evaluating the to the specified refrigerant charge, an adjustment is indicated, an abnormal such to observe as on defrost cycle. When the Quiet Shift switch is cycle will be observed. thermostat is in open position, and speedup pins are On return to heating operation, compressor will again turn off for an additional 30 sec and the outdoor fan for 40 sec. When the Quiet COOLING Shift is in OFF position, Use Cooling Charging Chart (Fig. 22). Vary refrigerant until the conditions of the chart are met. Note that charging charts are used. Charts are based on charging the for the various operating conditions. gauge and temperature sensing the pressure gauge to the service reading. Indoor air CFM must be within of the unit. 1. Turn off power to outdoor devices are port on the CHARGING the nornral operating 2. Disconnect board a few temperature and read the manifold what the lead from OF2 on control grounding. mode, allowing frost to accumulate on range 4. After to determine the unit. fan motor 3. Restart unit in heating outdoor coil. (;HARTS line temperature outdoor (See Fig. 23). Tape to prevent thermostat gauges. Refer to the chart temperature should be. only a brief 30 sec cycle will be observed. If it is desirable to observe a complete defrost in warmer weather, defrost thermostat must be closed as follows: suction line. Mount the temperature sensing device on the suction line and insulate it so that the outdoor ambient does not affect the Take the liquid depending selected Quiet Shift position). When Quiet Shift switch is in ON position, the length of defrost is 1 minute (30 sec compressor off period followed by 30 sec of defrost with compressor operation). rating plate). TO USE COOLING are available shorted (with a flat head screw driver) for 5 sec and released, a short defrost cycle will be observed (actual length is dependent upon the Check for leak. Use standard evacuating techniques. After evacuating system, weigh in the specified amount of refrigerant pressure Connect a complete defrost If defrost NO CHARGE Accurate required. a selected, compressor will be turned off for two 30 sec intervals during this complete defrost cycle, as explained previously. When Quiet Shift switch is in factory default OFF position, a normal and complete different from type normally units to correct subcooling which includes If defrost thermostat is closed, speedup pins (J1) must be shorted by placing a flat head screw driver in between for 5 sec and releasing, factory charge must always be CHARGE CHARGE control 30 minutes). The amount of refrigerant charge is listed on the unit rating plate and/or the physical data table. Refer to the Refrigeration Service Techniques Manual. Refrigerants Section. LOW is a time/temperature time period (DIP switch 1 and 2 on the board) cycles of 30, 60, 90. or 120 minutes (factory set at To initiate a forced defrost, two options the status of the defrost thermostat. If a substantial (refer to system control field-selectable between defrost and the tables in cooling exists somewhere in the cooling system, airflow across either coil or both coils. REFRIGERANT label and charge label and pressures de-energize, compressor will turn off for another 30 sec, and the outdoor fan will stay off for 40 sec, before starting in the heating mode. and may be obtained charging temperatures only. A refrigerant charging service access door. IMPORTANT: all refrigerant (This information table also.) shown refer to system charging access door. If charge is off for 30 sec and then turn back on to complete defrost. At the start of heating after conclusion of defrost reversing valve will unless label and the tables shown refer to system temperatures and a defrost initiated, the following sequence of operation will occur. Reversing valve will energize, outdoor fan will turn off, compressor will turn (R-410A) charge is not required of not having the proper When Quiet Shift switch is placed in ON position, minutes should drop (approximately in heating below mode, closing liquid-line point of defrost 30°F). pressure liquid NOTE: line Unit will remain in defrost until defrost thermostat at approximately 80°F coil temperature reopens at liquid line or remainder of defrost cycle time. NOTE: If the problem causing refrigerant leak. refer to Check INDOOR AIRFLOW inaccurate for Refrigerant AND AIRFLOW NOTE: Be sure that all supplyfrom obstructions, and adjusted Unit 50CR the Step 5--Defrost Leaks is a 5. Turn off power to outdoor and reconnect OF2 on control board after above forced section. ADJUSTMENTS and return-air properly. utilizes state of the art ECM Motor) ID Blower detailed information readings NON-COMMUNICATING HEATING MODE grilles are open. free (Electronic Motors. See user interface on adjusting airflow. This mode of operation failed or is otherwise Computated instructions established for fan motor lead to defrost cycle. EMERGENCY COOLING / is provided only in the case where the UI has unavailable. If communications cannot be with the UI, the Infinity following thermostat input terminals control of the 50CR unit: control to allow board will enable the simple thermostatic Control a. Y & O for cooling QUIET SHIFT Quiet Shift is a field-selectable occasional defrost noise that could be heard at the start of defrost restarting of heating cycle. It is selected defrost board) in ON position. b. W for electric heat (if applicable) mode, which will eliminate by placing c. Y for heat pump cycle and DIP switch 3 (on The Infinity control with the maxinmm applicable) 22 heat will respond to cooling and heating demands safe airflow based on electric heat size (if and unit capacity. Required Subcooling oF (oC! Outdoor Ambient Required Temperature Lic_uid Line Temperature Required SubcooEng for a Specific Subcooling !°F) (R-4tOA! Required Subcooling (°C) Model Size 75 (24) 82 (25) 85 (29) 95 (35) 105 (4t) Presstm )ressurc (peig) 5 10 15 20 25 3 6 8 11 14 tO,3 (5,7) 9,3(5.2) 9,8(5,4) 8,8(4,9) 9,4(5,2) 8,6(4,5) 9(5) 7,8(4,3) 8,6(4,7) 7(3,9) t89 t96 St 63 56 58 51 46 41 1303 16 13 11 8 5 53 48 43 1351 17 15 12 9 8 16,5(9.8) 12.7 (7,t) 18.8 t 9.2 ) 12,7(7,1) t8.4 ( 8,8 ) t2,6(7) 14,3(7,9) 12.6(7) 203 210 88 68 81 63 56 51 46 1399 19 16 13 10 8 O42 t7,8 ( 9.8 ) t2,8 (7,1) 58 53 48 1448 20 17 14 11 9 O48 t7,5 ( 9.7 ) 16.9(9,4) 16.6(9,2) t5.7 ( 8,7 ) 14,8(8.2) 217 70 65 60 55 50 1498 21 18 15 13 10 14.5(8.1) 11.5 ( 8.4 ) 224 231 238 72 74 76 87 69 71 62 57 52 1544 22 19 18 14 11 64 59 54 1598 23 20 18 15 12 66 61 56 1641 24 21 19 18 13 245 77 72 67 62 57 1689 25 22 20 17 14 252 79 74 69 64 59 1737 26 23 21 18 15 260 268 81 83 78 78 71 66 St 1792 27 25 22 19 16 73 68 53 1848 29 26 23 20 17 276 85 80 75 70 85 1903 30 27 24 21 19 284 87 82 77 72 87 1958 31 28 25 22 20 292 89 84 79 74 89 2013 32 29 26 23 21 300 91 88 81 76 71 2088 33 30 27 24 22 5- Interpolate if the Outdoor ambient temperature lies in between the table values, Extrapolate if the temperature lies beyond the table range. 309 93 88 83 78 73 2130 34 31 28 28 23 318 95 90 85 80 75 2192 35 32 29 27 24 6- Find the Pressure Value in the table corresponding Pressure of the Compressor Discharge line. 327 97 92 87 82 77 2254 36 33 31 28 25 336 99 94 89 84 79 2318 37 34 32 29 26 345 101 98 91 86 81 2378 38 35 33 30 27 354 103 98 93 88 83 2440 39 36 34 31 28 364 105 100 95 90 85 2509 40 38 35 32 29 374 107 102 97 92 87 2578 41 39 36 33 30 384 108 103 98 93 88 2647 42 40 37 34 31 394 110 105 100 95 90 2718 44 41 38 35 32 404 112 107 102 97 92 2785 45 42 39 36 33 414 114 109 104 99 94 2854 46 43 40 37 34 424 116 111 106 101 96 2923 47 44 41 38 35 434 118 113 108 103 98 2992 48 45 42 39 36 444 119 114 109 104 99 3081 48 46 43 40 37 454 121 116 111 106 101 3130 49 47 44 41 38 464 123 118 113 108 103 3199 50 48 45 42 39 474 124 119 114 109 104 3268 51 48 46 48 40 484 126 121 118 111 106 3337 52 49 47 44 41 494 127 122 117 112 107 3408 53 50 47 45 42 504 129 124 119 114 109 3475 54 51 48 48 43 514 131 126 121 118 111 3544 55 52 49 48 44 524 132 127 122 117 112 3612 56 53 50 47 45 534 134 129 124 119 114 3681 56 54 51 48 45 O24 O30 O36 O60 13.7{7.8) CharqincLProcedure t- Measure Discharge t3 { 7.2 ) line pressure by attaching 2- Measure the Liquid line temperature device to it. 3- insulate the temperature doesn't affect the reading. sensing 4- Refer to the required Subcooling the Outdoor Ambient temperature. 13(7.2) by attaching a temperature device so that the Outdoor port. sensing Ambient in the table based on the model size and 7- Read across from the Pressure reading temperature for a required SubcooEng 8- Add Charge if the measured a gauge to the service to the the measured to obtain the Liquid line temperature is higher than the table value, (kPa) H C03027 Fig. 22 - Cooling Table 3--ECM Charging Wet Coil Pressm_ UNIT STANDARD SIZE 600 700 800 9OO 1000 024 0.005 0.007 0.010 0.012 0.015 0.007 0.010 0.012 0.015 0.018 0021 0024 0.019 0.023 0.027 0032 0.014 0.017 0020 0027 030 036 042 1100 1200 048 Table-Subcooling CFM 1300 Drop 1400 1500 0037 0042 0.047 0024 0027 0032 0036 060 Table FILTER SIZE 20X20X1 500 0.05 600 0.07 700 0.08 24X30X1 800 0.1 4--Filter Pressure 1600 1700 1800 0.031 0.035 0.039 0.043 0.041 0.045 0.052 0.029 0.032 0.036 Drop Table CFM 900 0.12 1000 0.13 1100 0.14 1200 0.15 1300 1400 0.05 0.6 0.07 0.07 0.08 0.09 0.1 0.06 0.07 0.07 0.08 24X36X1 Table 5--Electrlc Small (in. wg) (SCFM) 1900 2000 0.057 0.053 0.058 0.040 0.045 0.049 2100 0.053 (in. wg) 1500 1600 1700 1800 1900 2000 2100 2200 2300 0.09 0.09 0.10 0.11 0.12 0.13 0.14 0.14 Heat Pressure Drop Table Cabinet: 024=036 GFM 5 kw 500 0.00 600 0.00 700 0.00 800 0.00 900 0.00 1000 0.00 1100 0.00 1200 0.00 1300 0.02 1400 0.04 1500 0.08 1600 0.07 7.2 kw 10 kw 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.02 0.04 0.03 0.06 0.05 0.07 0.07 0.09 0.08 0.10 0.09 0.11 15 kw 0.00 0.00 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 20 kw 0.00 0.00 0.02 0.04 0.06 0.08 0.09 0.11 0.13 0.15 0.17 0.19 23 Table 6--Electric Heat Pressm'e Large Cabinet: Drop Table 042-060 GFM 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 21 O0 2200 2300 2400 2500 5kw 7.2 kw 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.02 0.02 0.03 0.03 0.04 0.04 0.05 0.05 0.06 0.06 0.07 0.07 0.08 0.08 0.09 0.09 0.10 0.10 0.11 0.11 0.12 0.12 0.13 10 kw 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 15 kw 0.00 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 20 kw 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 o --- o m r,o _ -<_ --<:>-- _ O -C:>- o --C:)_ -<=>- -C:D-- O -CZ3- <_ CESO1 Quiet Shift Speedup Pins 30076-00 Defrost interval DIP switches Fig. 23 - Defrost Control MAINTENANCE To ensure possibility continuing high performance, and to nainimize the of premature equipment failure, periodic maintenance ELECTRICAL must be performed on this equipment. This heat pump unit should be inspected at least once each year by a qualified service person. To troubleshoot unit. refer to Table 8, Troubleshooting NOTE TO EQUIPMENT OWNER: about the availability of a maintenance Consult contract. caution 3. Never place anything with the unit. INJURY AND UNIT DAMAGE could result in serious injury 1. Turn off electrical power to the unit before maintenance or service on this unit. local dealer 2. Use extreme PERSONAL HAZARD Failure to follow these warnings or death: (;hart. your SHOCK when removing combustible perfornring panels any and parts. either on or in contact HAZARD Failure to follow this warning could result in personal or death and possible unit component damage. injury The ability to properly perform maintenance on this equipment requires certain expertise, mechanical skills, tools and equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment, other than those procedures recommended in the Owner's Manual. UNIT 24 OPERATION HAZARD Failure to follow this caution may result in equipment or improper operation. damage Errors made when reconnecting wires may cause and dangerous operation. Label all wires disconnecting when servicing. improper prior to Theminimum maintenance requirements forthisequipment areas follows: 1.Inspect airfilter(s) eachmonth. Clean or replace when necessary. 2.Inspect indoor coil,drainpan.andcondensate draineach cooling season forcleanliness. (;lean when necessary. 3.Inspect blower motor and wheel forcleanliness each cooling season. (;lean when necessary. 4.Check electrical connections fortightness andcontrols for properoperation eachcoolingseason. Service when necessary. StepI--Air Filter IMPORTANT: Never operate the unit without in the return- air duct system. Always a suitable Step 4_Outdoor UNIT installed. 1. Remove cover. the filter becomes Step 2--Indoor Blower NOTE: All motors these motors. clogged expose 1 for 6 screws holding accumulated dirt and grease from the blower efficiency, wheel grille and motor upside down to top on top cover for cracks to or bends. loosen setscrew 5. When replacing position fan blade, and slide fan off blade so that the hub is 1/8 in. away from the motor end (1/8 in. of motor be visible) (See Fig. 24). 6. Ensure that set screw engages when tightening. Do not attempt to lubricate and continuing outdoor assembly 3. Inspect the fan blades and Motor economy, to unit fan blade. 7. Replace For longer life, operating may result in damage 4. If fan needs to be removed, motor shaft. with dust and lint. are pre-lubricated. this caution 2. Turn motor/grille Inspect air filter(s) at least once each month and replace (throwaway-type) or clean (cleanable-type) at least twice during each cooling season and twice during the heating season, or whenever HAZARD Keep the condenser fan free from all obstructions to ensure proper cooling operation. Never place articles on top of the unit. air filter See Table OPERATION Failure to follow components. replace the filter with the same dinmnsional size and type as originally recommended filter sizes. Fan shaft will the flat area on the motor shaft grille. clean and motor annually. ELECTRICAL SHOCK HAZARD Failure to follow this warning or death. could result in personal injury Infinity Top A06035 Disconnect and tag electrical power to the unit before cleaning and lubricating the blower motor and wheel. "A" UNIT SIZE DIMENSION Infinity Step 3--Outdoor Drain Pan (?oil, Indoor Coil, and Condensate Inspect the condenser coil. evaporator pan at least once each year. coil, and condensate The coils are easily cleaned when dry; therefore, drain inspect and clean 024 25 030 25 036 24 042 24 048 24 060 19 Fig. 24 - Fan Blade the coils either before or after each cooling season. Remove all obstructions, including weeds and shrubs, that interfere with the airflow through the condenser coil. Straighten bent fins with a fin comb. If coated with dirt or lint, clean the coils with a vacuum Step 5--Electrical Inspect cleaner, using the soft brush attachnmnt. Be careful not to bend the insulation, wiring, connections. disassemble and wiring annually. Be to the unit. If any smoky or burned connections the connection, clean all the parts, re-strip and reassemble the connection properly are noticed, the wire end and securely. After inspecting the electrical controls and wiring, replace all the panels. Start the unit, and observe at least one complete cooling Inspect the drain pan and condensate drain line when inspecting the coils. (;lean the drain pan and condensate drain by removing all foreign matter from the pan. Flush the pan and drain trough with air filter(s). If the drain trough is restricted, snake" or similar probe device. controls power Remove access panel to locate all the electrical controls and wiring. Check all electrical connections for tightness. Tighten all screw or air filter(s). For best results, spray condenser coil fins from inside to outside the unit. On units with an outer and inner condenser coil, be sure to clean between the coils. Be sure to flush all dirt and debris from the unit base. clear water. Do not splash water on the insulation, and Wiring and check the electrical sure to turn off the electrical fins. If coated with oil or grease, clean the coils with a mild detergent and water solution. Rinse coils with clear water, using a garden hose. Be careful not to splash water on motors, Controls Clearance cycle to ensure proper operation. operating cycle, or if a suspected motor, wiring, or each electrical instrumentation. checks. clear it with a "plumbers 25 If discrepancies are observed in malfunction has occurred, check component with Refer to the unit wiring the proper electrical label when making these Balance Point Worksheet 7O 60 CD o C::t. o° o g,m 50 Bg- 4o O60 048 042 036 "- 30 030 :5 E 5 = CO r- 024 20 10 -2O -10 0 10 20 Outdoor Air 30 Temp 40 (Deg 50 6O F) C03008 Fig. 25 - 50CR Balance Step 6--Refi*igerant Point Worksheet Circuit Inspect all refrigerant tubing connections and the unit base for oil accunmlation annually. Detecting oil generally indicates a refrigerant leak. If oil is detected or if low performance is suspected, leak test all refrigerant tubing using an electronic leak detector, or liquid-soap solution. If a refrigerant Refrigerant Leaks section. If no refrigerant leak is detected, refer to Check leaks are found and low performance refer to Checking Step 7--Indoor and Adjusting Refrigerant for is suspected, Charge section. Airflow The heating and/or cooling airflow does not require checking unless improper performance is suspected. If a problem exists, be sure that all supplyobstructions, and return-air grilles are and that the air filter is clean. Step 8--Metering Devices-TXV open & Accurater and free from Piston This unit uses 2 types of nmtering devices. The outdoor metering device is a fixed orifice and is contained in the brass- hex body in the liquid line feeding the outdoor a TXV-type device. Step 9--Pressure Switches Pressure are protective switches coils. The indoor metering devices wired into control device is C99097 circuit Fig. 26 - Refrigerant (low voltage). They shut off compressor if abnormally high or low pressures are present in the refrigeration circuit. These pressure switches systems. are specifically R-22 pressure for the Puron (R-410A) designed to operate with Puron (R-410A) switches must not be used as replacements Step 10--Loss-of-Charge Circuit Switch This switch is located on the liquid line and protects against suction pressures caused by such events as loss of charge, system. 26 low low airflow across indoor coil,dirtyfilters, etc.It opens onapressure drop atabout 20psig. Ifsystem pressure isabove this,switch should beclosed. Tocheck switch: 1.Turnoffallpower tounit. 2.Disconnect leads onswitch. 3.Applyohmmeter leads across switch. Youshould have continuity onagood switch. NOTE: Because these switches areattached torefrigeration system underpressure, it is notadvisable to remove thisdevice for troubleshooting unless youarereasonably certain thataproblem exists. If switch must beremoved, remove andrecover allsystem charge sothatpressure gauges read0 psi.Never opensystem without breaking vacuum withdrynitrogen. Stepll--High-Pressure Switch REFRIGERANT PERSONAL COMPRESSOR 2. Disconnect fan SERVICING MATERIALS Exposure, Scroll OIL SYSTEMS ON ROOFS WITH SYNTHETIC POE (polyolester) compressor lubricants are known term damage to some synthetic roofing materials. to unit. 3. Apply ohm meter leads across continuity on a good switch. Compressor switch. You should (Puron have even if inmmdiately cleaned up, to cause long may cause embrittlement (leading to cracking) to occur in one year or more. When performing any service that may risk exposure of compressor Refrigerant) The compressor used in this product is specifically designed operate with Puron (R-410A) refrigerant and cannot injury, oils designed for HCFC and CFC refrigerants. Take all necessary precautions to avoid exposure of the oil to the atmosphere. leads on switch. Step 12--Copeland HAZARD The compressor in this system uses a polyolester (POE) oil, Mobil 3MA POE. This oil is extremely hygroscopic, meaning it absorbs water readily. POE oils can absorb 15 times as much water as other To check switch: 1. Turn off all power OPERATION hoses, and recovery system must be designed to handle Puron. If you are unsure, consult the equipment manufacturer. psig. coil, failed UNIT This system uses Puron (R-410A) refrigerant which has higher operating pressures than R-22 and other refrigerants. No other refrigerant may be used in this system. (_auge set, The high-pressure switch is located in the discharge line and protects against excessive condenser coil pressure. It opens at 650 High pressure may be caused by a dirty outdoor motor, or outdoor air recirculation. INJURY, Failure to follow this caution may result in personal equipment damage or improper operation. oil to the roof. take appropriate precautions to protect roofing. Procedures which risk oil leakage include, but are not limited to, compressor replacement, repairing refrigerant leaks, and replacing to be refrigerant components such as filter drier, metering device, coil. accunmlator, or reversing interchanged. The compressor is an electrical (as well as mechanical) device. Exercise extreme caution when working near compressors. Power should be shut off, if possible, for most troubleshooting techniques. Refrigerants present additional safety hazards. Synthetic Roof 1. (;over Precautionary extended polyethylene approximate roof pressure valve. switch. Procedure working (plastic) drip 10 X 10 ft area. area with cloth or an impermeable tarp. (;over an 2. (;over area in front of the unit service panel with a terry cloth shop towel to absorb lubricant spills and prevent run-offs, EXPLOSION, FIRE, ELECTRICAL SHOCK Failure to follow this warning could result in personal or death and/or property damage. Wear safety glasses and gloves when Keep torches and other ignition refrigerants and oils. handling sources and HAZARD protect drop cloth from tears caused by tools or components. injury 3. Place terry cloth shop towel inside unit imnmdiately component(s) to be serviced and prevent lubricant through the louvered openings in the unit base. refrigerants. away from 4. Perform required service. 5. Remove and dispose local codes. The scroll compressor pumps refrigerant throughout the system by the interaction of a stationary and an orbiting scroll. The scroll LIQUID-LINE FILTER under run-offs of any oil-contaminated material per DRIER compressor has no dynamic suction or discharge valves, and it is more tolerant of stresses caused by debris, liquid slugging, and The biflow filter drier is specifically flooded starts. The compressor is equipped with an anti-rotational device and an internal pressure-relief port. The anti-rotational Use only factory-authorized components. Filter drier must be replaced whenever the refrigerant system is opened. When removing a filter drier, use a tubing cutter to cut the drier from the device prevents the scroll from turning backwards and replaces the need for a cycle protector. The pressure-relief port is a safety device, designed to protect against extreme high pressure. The relief port has an operating range between 550 and 625 system. psi differential PURON scroll compressor uses Mobil is the only oil allowed for oil recharge. Step 13--Refrigerant System to operate with Puron. system. Do not unsweat a filter drier from the system. Heat from unsweating will release moisture and contaminants from drier into pressure. The Copeland designed 3MA POE oil. This (R-410A) REFRIGERANT Refer to unit information CHARGING plate and charging chart. Some R-410A refrigerant cylinders contain a dip tube to allow liquid refrigerant to flow from cylinder in upright position. For cylinders equipped with a clip tube. charge Pnron (_: units with This step covers the refrigerant system of the 50CR, including the compressor oil needed, servicing systems on roofs containing synthetic materials, the filter drier, and refrigerant charging. cylinder in upright position and a commercial nmtering manifold hose. Charge refrigerant into suction line. 27 device in Step 14--System Information LOSS-OF-CHARGE Unit Top SWITCH The loss of charge switch is a protective device wired into control circuit (low voltage). It shuts off the compressor if abnormally low pressures are present in the refrigeration circuit. Defrost Sensor_ NOTE: Because these switches under pressure, it is not are attached advisable troubleshooting unless exists. If switch must be removed, charge so that pressure without breaking CHECK to remove you are reasonably gauges vacuum DEFROST to refrigeration this system device for certain that a problem remove and recover read 0 psi. Never all system open system with dry nitrogen. THERMOSTAT There is a liquid header with a brass distributor and feeder tube going into outdoor coil. At the end of one of the feeder tubes, there is a 3/8-in. OD stub tube approximately 3 in. long (See Fig. 27). The defrost thermostat should be located on stub tube. NOTE: There is only one stub tube used with liquid header, and on most units it is the bottom circuit. The defrost thermostat signals heat pump that conditions Detail A are right for defrost or that conditions have changed to terminate defrost. It is a thermally-actuated switch clamped to outdoor coil to sense its temperature. Normal open at 80 ° -+ 5°E temperature range is closed at 30 ° -+ 3°F and TROUBLESHOOTING Refer to the Cooling and Heating for troubleshooting information. START-UP Use the Start-Up Checklist Troubleshooting (;hart (Table 7) CHECKLIST at the back of this manual. A06068 Fig. 27 - Defrost 28 Sensor Location HEAT REFRIGERATION PUMP WITH SECTION PURON QUICK-REFERENCE GUIDE Puron refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing designed to operate with Puron. Puron refrigerant cylinders are rose colored. • Puron refrigerant cylinders manufactured prior to March upright Cylinders manufactured March 1, 1999 and later DO NOT position. equipnaent and replacement components 1. 1999, have a dip tube that allows liquid to flow out of cylinder have a dip tube and MUST be positioned to allow liquid to flow. • Recovery • Puron systems cylinder service • Manifold • Use hoses with 750 psig service • Leak detectors • Puron, • Vacuum • Only use factory-specified • Do not install a suction-line • POE oils absorb • POE oils may cause damage • Wrap all filter driers and service • A Puron • Do not use an R-22 • Never open system to atmosphere • When system • Do not vent Puron • Observe • Do not leave Puron should pressure be charged sets should rating must be 400 psig. DOT 4BA400 with liquid refrigerant. should pressure be designed will not remove moisture liquid-line metering device in the manifold be 750 psig high side and 200 psig low side with 520 psig low side retard. rating. to detect HFC refrigerant. as with other HFCs. is only compatible pumps or DOT BW400. Use a commercial-type moisture liquid-line with POE oils. from oil. filter driers with rated working filter drier in liquid rapidly. pressures no less than 600 psig. line. Do not expose oil to atmosphere. to certain plastics and roofing materials. valves with ,,vet cloth when brazing. filter drier is required on every unit. TXV. must be opened while it is under for service, a vacuum. break vacuum with dry nitrogen into the atmosphere. all warnings_ cautions_ suction and bold text. line driers in place for more than 72 hrs. 29 and replace filter driers. hose. are in upside down Table 7 Troubleshooting SYMPTOM Compressor and outdoor will not start II Compressor rune will not start CAUSE fan but Chart condenser fan REMEDY Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective contactor, transformer, control relay, defrost board, or high-pressure, lossof-charge or low-pressure switch Replace component Insufficient line voltage Determine Incorrect or faulty wiring Check wiring diagram and rewire correctly User Interface setting too low/too high Reset UI setting Units have a 5-minute DO NOT bypass this compressor time delay wait for 5 minutes until time-delay relay is de-energized time delay Faulty wiring or circuit Loose connections in compressor Check wiring and repair or replace Compressor Determine motor burned out, seized, or internal overload open Defective run capacitor, overload, or PTC (positive temperature coefficient) thermistor One leg of 3-phase power dead Low input voltage (20 percent low) Three-phase scroll compressor (size 030- 060 unit) has a low pressure differential Scroll compressor is rotating in the wrong direction Refrigerant overcharge Compressor cycles (other than normally satisfying) cooling/heating sails or undercharge head pressure Replace fuse or reset circuit breaker Determine cause Determine cause and correct Correct the direction 3-phase of rotation by reversing the power leads to the unit Recover refrigerant, charge to capacities evacuate system, and reshown on rating plate Damaged reversing valve Restriction in refrigerant system Determine cause and replace Replace Determine cause and correct Locate restriction and remove Dirty air filter Unit undersized Replace filter Decrease load or increase unit size Determine for load set too low/too high Frosted coil with incorrect defrost operation cause and correct Reset UI setting Locate leak, repair, and recharge Check defrost time settings Reset as necessary Check defrost temperature switch Replace as necessary Outdoor coil dirty or restricted Recover refrigerant, evacuate system, and recharge Clean coil or remove restriction Dirty air filter Dirty indoor or outdoor coil Replace filter Clean coil Refrigerant overcharged Recover excess refrigerant Air in system (Heat) Indoor air restricted or recirculating Indoor or outdoor air restricted or air short-cycling (Continued cause and replace Defective run/start capacitor, overload or start relay Faulty outdoor fan motor or capacitor Air in system Excessive Determine Replace and determine cause Determine cause and correct Low refrigerant charge operates continuously cause Replace compressor Defective compressor Insufficient line voltage Blocked outdoor coil UI temperature Compressor cause and correct next page) 3O Recover refrigerant, evacuate system, and recharge Determine cause and correct Determine cause and correct Table SYMPTOM Head pressure too low Excessive suction pressure 7 Troubleshooting ('hart (Cont'd) CAUSE REMEDY Low refrigerant charge Restriction in liquid tube (Cool) High Heat load Check for leaks, repair and recharge Remove restriction Check for source and eliminate Reversing valve hung up or leaking internally Replace valve Refrigerant overcharged (Cool) Dirty air filter Recover excess refrigerant Replace filter Move timer on control board to 30 minutes between defrost cycles (Heat) Outdoor coil frosted Low refrigerant charge Suction pressure too low (Cool) Insufficient Increase air quantity Check filte_replace if necessary coil airflow (Cool) Temperature too low in conditioned (Cool) Outdoor ambient below 55°F Filter drier restricted Compressor IFM does runs not but outdoor run fan does not Insufficient voltage at motor not properly sealed Water dripping into motor operation IFM Indoor area NO (normally closed) contacts on defrost board open Blower wheel not secured to shaft Power connectors iFM Check for leaks, repair and recharge Remove source of restriction Metering device or low side restricted kit Replace Check condition of relay on board Replace if necessary Properly tighten blower wheel to shaft Determine cause and correct Connectors should snap easily; do not force Verify proper drip loops in connector wires Gently pull wires individually to be sure they are crimped into the housing is intermittent Connectors Reset UI setting Install low-ambient not firmly sealed Fan Motor 31 START=UP CHECKLIST (Remove and Store in Job File) I. Preliminary information MODEL NO.: SERIAL NO.: DATE: TECHNICIAN: IL PRE-START=UP (insert checkmark in box as each item is completed) VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNiT REMOVE ALL SHIPPING HOLD DOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS CHECK GAS PIPING FOR LEAKS (WHERE APPLICABLE) CHECK THAT INDOOR (EVAPORATOR) AIR FILTER IS CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEEL, AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW TIGHTNESS MAKE SURE THAT - (If Applicable) ON 060 SIZE PURON HEATPUMP ONLY, THE TWO WIRE TIES FASTEN TO THE OUTDOOR COILS AND REVERSING VALVE/ACCUMULATOR HAVE BEEN REMOVED H ill. START-UP ELECTRICAL SUPPLY VOLTAGE COMPRESSOR AMPS INDOOR (EVAPORATOR) FAN AMPS TEMPERATURES DB OUTDOOR (CONDENSER) AIR TEMPERATURE RETURN-AIR TEMPERATURE DB WB COOLING SUPPLY AIR DB WB HEAT PUMP SUPPLY AIR ELECTRIC HEAT SUPPLY AIR PRESSURES REFRIGERANT SUCTION PSIG SUCTION LINE TEMP* REFRIGERANT DISCHARGE PSIG DISCHARGE TEMPt ( ) VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS *Measured at suction inlet to compressor tMeasured at liquid line leaving condenser. A05306 Copyright 2006 Carrier Corp Manufacturer reserves • 7310 W Morris St • Indianapolis, iN 46231 the right to change_ at any time_ specifications and designs Printed in U.SA. without notice Edition and without .32 Date: 03/06 obligations, Catalog Replaces: No: 50CR-1SI New
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.2 Linearized : No Page Count : 32 Page Layout : SinglePage Page Mode : UseNone Producer : Goby Monitor Application version 3, 2, 1, 4 Create Date : Fri Apr 20 14:31:14 2007 Author : Title : Subject :EXIF Metadata provided by EXIF.tools