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Carrier 50CR User's Manual

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1. 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 5kw 0 00 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 7 2 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 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 D E dNAa44dS Speedup Pins Shift Defrost interval DIP switches Fig 23 Defrost Control MAINTENANCE To ensure continuing high performance and to minimize the possibility of premature equipment failure periodic maintenance 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 Chart NOTE TO EQUIPMENT OWNER Consult your local dealer about the availability of a maintenance contract A WARNING PERSONAL INJURY AND UNIT DAMAGE HAZARD Failure to follow this warning could result in personal injury or death and possible unit component damage The ability to properly perform maintenance this equipment requires certain expertise mechanica
2. MC MUN 777773015 AYINI YIMOd 016 773018 422 1100 dVAJ NI Su313NI T1IN 00 2v 100 961 100 271 SNIDIAHSS 32NVHV3T19 8 9901 101 AYINI YIMOd SJOVJUNS YIHLO ONY STIVM 31382NO2 YO 2018 ONY LINN 0716 SJOVJUYNS ONY LINN 8 9901 NI SYJLINITIIW SIONVYYJIO IIN TINVd 1v3s 21812113 11777 TINA 30 NOLIO8 5121 0 31150490 3015 30 3015 Lond 30 401 OL S3ONVUV3TO AYINI YIMOd VIO SL L S YF 306 LH9IY HU 9 0 p203120S 9 oo ac MAA 306 1437 IZL ZE 921 07168 6920 TINYd 5302 TWOINI2313 9 lV3H 21812313 43MO18 80 3 4 02 1582 v 4330 187010722 X L d N 617010761 131100 016 AYINI 1081800 310H WIG 8970 0 89 051 8 07 06 92 86 9 0 0 v9 lvl L e v8 hess 1 LESOL 080 0 v9 1vl L e v8 L 1 0L 720 0 2 9 Y 794 S81 LHOTIM YINYOD to eilz ote 10 119 5 10 0210 806 120 1716 tror 2691 ELE 09 0 2 802 09 1 0 2 802 9 08206 te Lil0 6120687 1070210 909 20 6611 166 t 8SI eve 09 0 2 802 09 1 0 2
3. 036 0 019 0 023 0 027 0 032 0 037 0 042 0 047 042 0 014 0 017 0 020 0 024 0 027 0 031 0 035 0 039 0 043 048 0 027 0 032 0 036 0 041 0 046 0 052 0 057 0 063 0 068 060 0 029 0 032 0 036 0 040 0 045 0 049 0 053 Table 4 Filter Pressure Drop Table in wg CFM SIZE 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 20X20X1 0 05 10 07 0 08 01 0 12 0 13 0 14 0 15 24 30 1 0 05 0 6 0 07 0 07 0 08 0 09 0 1 24X36X1 0 06 0 07 0 07 0 08 0 09 0 09 0 10 0 11 0 12 0 13 0 14 0 14 Table 5 Electric Heat Pressure Drop Table Small Cabinet 024 036 CFM 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 5 kw 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 02 0 04 0 06 0 07 7 2 kw 0 00 0 00 0 00 0 00 0 00 0 00 0 02 0 03 0 05 0 07 0 08 0 09 10 kw 0 00 0 00 0 00 0 00 0 00 0 02 0 04 0 06 0 07 0 09 0 10 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 50CR Table 6 Electric Heat Pressure Drop Table Large Cabinet 042 060 CFM
4. Rain MINIMUM HEIGHT 36 UNIT HEIGHT A06113 MAXIMUM SHIPPING WEIGHT UNIT SIZE Lb Kg 50CR024 372 169 50CR030 372 169 50CR036 395 179 50CR042 462 210 50CR048 485 220 50CRO60 521 236 Fig 9 Suggested Rigging Step 5 Select and Install Ductwork 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 and ventilating systems NFPA 90A or residence type NFPA 90B and or local codes and ordinances Select and size ductwork supply air registers and return air grilles according to ASHRAE American Society of Heating Refrigeration and Air Conditioning Engineers recommendations The unit has duct flanges on the supply and return air openings on the side of the unit 4 WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death 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 and installing ductwork consider the fo
5. 50CR CHECKING AND ADJUSTING REFRIGERANT CHARGE The refrigerant system is fully charged with Puron R 410A refrigerant and is tested and factory sealed NOTE Adjustment of the refrigerant charge is not required unless the unit is suspected of not having the proper R 410A charge The charging label and the tables shown refer to system temperatures and pressures in cooling mode only A refrigerant charging label is attached to the outside of the service access door If charge level is suspect in heating mode reclaim all refrigerant and charge to informative plate amount This information may be obtained from the physical data table also The charging label and the tables shown refer to system temperatures and pressures in cooling mode only A refrigerant charging label is attached to the outside of the Service access door IMPORTANT When evaluating the refrigerant charge an indicated adjustment to the specified factory charge must always be very minimal If a substantial adjustment is indicated an abnormal condition exists somewhere in the cooling system such as insufficient airflow across either coil or both coils REFRIGERANT CHARGE 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 NO CHARGE Check for leak Use standard evacuating techniques After evacuating system weigh in the specified amount of
6. Note A When unit mounting screw is used retainer bracket must also be used G gt 1 R A S A l Gasket around E duct 22 Insulated Gasket around Insulated deck pan outer edge dec pan Long Support t Return opening B X C A05308 UNIT SIZE ODS CATALOG A B D E F G NUMBER IN MM IN MM IN MM IN MM IN MM IN MM IN MM 50CR024 036 CPRFCURBOO6A00 8 203 11 279 16 1 2 419 28 3 4 730 30 3 8 771 44 5 16 1126 45 15 16 1167 CPRFCURBOO7A00 14 356 11 279 16 1 2 419 28 3 4 730 30 3 8 771 44 5 16 1126 45 15 16 1167 50CRO42 060 CPRFCURBOO8A00 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 CPRFCURBOO9A00 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 NOTES 1 Roof curb must be set up for unit being installed 2 Seal strip must be applied as required to unit being installed 3 Dimension in are in millimeters 4 Roof curb is made of 16 gauge steel 5 Table lists only the dimensions per part number that have changed 6 Attach ductwork to curb flanges of duct rest on curb 7 Insulated panels 1 in thick fiberglass 1 Ib density 8 Dimensions are in inches 9 When unit mounting screw is used see Note A a retainer bracket mus
7. Install insulation cant strips roofing and flashing Ductwork must be attached to curb IMPORTANT The gasketing of the unit to the roof curb is critical for a water tight seal Install gasketing material supplied with the roof curb Improperly applied gasketing also can result in air leaks and poor unit performance Curb should be level to within 1 4 in See Fig 3 This is necessary for unit drain to function properly Refer to accessory roof curb installation instructions for additional information as required SLAB MOUNT Place the unit on a solid level concrete pad that is a minimum of 4 in thick with 2 in above grade The slab should extend approximately 2 in beyond the casing on all 4 sides of the unit See Fig 4 Do not secure the unit to the slab except when required by local codes GROUND MOUNT The unit may be installed either on a slab or placed directly on the ground if local codes permit Place the unit on level ground prepared with gravel for condensate discharge Step 3 Provide Clearances The required minimum service clearances are shown in Fig 6 and 7 Adequate ventilation 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
8. 50CR Balance Point Worksheet Step 6 Refrigerant Circuit Inspect all refrigerant tubing connections and the unit base for oil accumulation 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 leak is detected refer to Check for Refrigerant Leaks section If no refrigerant leaks are found and low performance is suspected refer to Checking and Adjusting Refrigerant Charge section Step 7 Indoor Airflow The heating and or cooling airflow does not require checking unless improper performance is suspected If a problem exists be sure that all supply and return air grilles are open and free from obstructions and that the air filter is clean Step 8 Metering Devices TXV amp Accurater Piston This unit uses 2 types of metering devices The outdoor metering device is a fixed orifice and is contained in the brass hex body in the liquid line feeding the outdoor coils The indoor metering device is a TXV type device Step 9 Pressure Switches Pressure switches are protective devices wired into control circuit low voltage They shut off compressor if abnormally high or low pressures are present in the refrigeration circuit These pressure switches are specifically designed to operate with Puron R 410A systems R 22 pressure switches must not be used as
9. If motor size is incorrect for model size motor must be replaced with proper size motor Unit control will not respond to operation requests until this fault condition is resolved STATUS CODE 26 INVALID HEATER SIZE On initial power up unit control will write into memory electric heater size as read from heater if heater is provided with Identifier Resistor IDR Heater size must be valid for combination of indoor and outdoor components installed Unit control will read IDR value 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 heater is installed Verifying that this is correct will establish that the unit is operating without an electric heater accessory Upon choosing negative option installer will be prompted to select heater size installed from a list of valid heater sizes for unit size installed If heater ID resistor value read is invalid Status Code 26 will be displayed on STATUS LED If heater installed is equipped with a resistor connected to pins 1 and 2 of heater harness connector and status code 26 is displayed on STATUS LED 1 Check wiring harness connections to be sure connections are secure 2 If symptoms persist disconnect wiring harness at unit control board and check for a resistance value greater than 5000 ohms 3 Check for proper wiring of resistor assembly 4 Make sure heater size installed is an approved siz
10. Replace valve Refrigerant overcharged Recover excess refrigerant Suction pressure too low Cool Dirty air filter Replace filter Heat Outdoor coil frosted Move timer on control board to 30 minutes between defrost cycles Low refrigerant charge Check for leaks repair and recharge Metering device or low side restricted Remove source of restriction Cool Insufficient coil airflow Increase air quantity Check filter replace if necessary Cool Temperature too low in conditioned area Reset UI setting Cool Outdoor ambient below 55 F Install low ambient kit Filter drier restricted Replace Compressor runs but outdoor fan does not NC normally closed contacts on defrost board open Check condition of relay on board Replace if necessary IFM does not run Blower wheel not secured to shaft Properly tighten blower wheel to shaft Insufficient voltage at motor Determine cause and correct Power connectors not properly sealed Connectors should snap easily do not force IFM operation is intermittent Water dripping into motor Verify proper drip loops in connector wires Connectors not firmly sealed Gently pull wires individually to be sure they are crimped into the housing IFM Indoor Fan Motor 31 START UP CHECKLIST Remove and Store in Job File I Preliminary Information MODEL NO SERIAL NO DATE TECHNI
11. 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 REFRIGERANT A CAUTION PERSONAL INJURY UNIT OPERATION HAZARD Failure to follow this caution may result in personal injury equipment damage or improper operation 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 Gauge set hoses and recovery system must be designed to handle Puron If you are unsure consult the equipment manufacturer COMPRESSOR OIL 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 oils designed for HCFC and CFC refrigerants Take all necessary precautions to avoid exposure of the oil to the atmosphere SERVICING SYSTEMS ON ROOFS WITH SYNTHETIC MATERIALS POE polyolester compressor lubricants are known to cause long term damage to some synthetic roofing materials Exposure even if immediately cleaned up may cause embrittlement leading to cracking to occur in one year or more When performing any service that may risk exposure of compressor oil to the roof take appropriate precautions to protect roofing Procedures which risk oil leakage include but are
12. at 30 3 and open at 80 5 TROUBLESHOOTING Refer to the Cooling and Heating Troubleshooting Chart Table 7 for troubleshooting information START UP CHECKLIST Use the Start Up Checklist at the back of this manual 28 Defrost Sensor Unit Top 22 FF Vos Fig 27 Defrost Sensor Location 06068 HEAT PUMP WITH PURON REFRIGERATION SECTION QUICK REFERENCE GUIDE Puron refrigerant operates at 50 70 percent higher pressures than R 22 Be sure that servicing equipment and replacement components are designed to operate with Puron Puron refrigerant cylinders are rose colored Puron refrigerant cylinders manufactured prior to March 1 1999 have a dip tube that allows liquid to flow out of cylinder in upright position Cylinders manufactured March 1 1999 and later DO NOT have a dip tube and MUST be positioned upside down to allow liquid to flow Recovery cylinder service pressure rating must be 400 psig DOT 4BA400 or DOT BW400 Puron systems should be charged with liquid refrigerant Use a commercial type metering device in the manifold hose Manifold sets should be 750 psig high side and 200 psig low side with 520 psig low side retard Use hoses with 750 psig service pressure rating Leak detectors should be designed to detect HFC refrigerant Puron as with other HFCs is only compatible with POE oils Vac
13. 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 cycles to prevent compressor damage CHECKING COOLING AND HEATING CONTROL OPERATION Start and check the unit for proper control operation as follows 1 Place room UI SYSTEM switch or MODE control in OFF position Observe that blower motor starts when FAN mode is placed in FAN ON position and shuts down within 60 sec 030 060 size or 30 sec 024 size when FAN MODE switch is placed in AUTO position 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 setting is satisfied 3 When using an automatic changeover 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 room temperature IMPORTANT Three phase scroll compressors are direction oriented Unit must be checked to ensure proper compressor 3 phase power lead orientation If not corrected within 5 minutes the interna
14. normal house overhang is 48 in above the unit top The maximum horizontal extension of a partial overhang must not exceed 48 in IMPORTANT Do not restrict outdoor airflow An air restriction at either the outdoor air inlet or the fan discharge may be detrimental to compressor 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 NOTE Gasketing outer flange Flashing field supplied Roofing material field supplied Cant strip field supplied Provided with roof curb Gasketing inner flange Wood nai Roof Curb for Small Cabinet Note A When unit mounting screw is used retainer bracket must also be used Roof curb Insulation field supplied Ductwork field supplied ler Ro fi Flashing field field supplied Gask eting inner flange NOTE A Gasketing outer flange supplied ofing material eld supplied Cant strip f Provided with roof curb Wood nailer Roof curb Insulation field supplied 7 Ductwork field supplied Roof Curb for Large Cabinet
15. refrigerant refer to system rating plate LOW CHARGE COOLING Use Cooling Charging Chart Fig 22 Vary refrigerant until the conditions of the chart are met Note that charging charts are different from type normally used Charts are based on charging the units to correct subcooling for the various operating conditions Accurate pressure gauge and temperature sensing devices are required Connect the pressure gauge to the service port on the suction line Mount the temperature sensing device on the suction line and insulate it so that the outdoor ambient does not affect the reading Indoor air CFM must be within the normal operating range of the unit TO USE COOLING CHARGING CHARTS Take the liquid line temperature and read the manifold pressure gauges Refer to the chart to determine what the liquid line temperature should be NOTE If the problem causing the inaccurate readings is a refrigerant leak refer to Check for Refrigerant Leaks section INDOOR AIRFLOW AND AIRFLOW ADJUSTMENTS NOTE Be sure that all supply and return air grilles are open free from obstructions and adjusted properly Unit 50CR utilizes state of the art ECM Electronic Computated Motor ID Blower Motors See user interface instructions for detailed information on adjusting airflow Step 5 Defrost Control QUIET SHIFT Quiet Shift is a field selectable defrost mode which will eliminate occasional noise that could be heard at the start of defrost cyc
16. side Schrader fitting located on the suction line and one high side Schrader fitting located on the compressor discharge line Be sure that caps on the ports are tight START UP Step 1 Unit 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 A LED Description 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 at the system user interface in text with basic troubleshooting instructions Careful use of information displayed will reduce the need for extensive manual troubleshooting The amber LED located at bottom center of control adjacent to motor harness plug is Motor Status LED and it is labeled MOTOR A second amber LED located in upper right center of control 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 system communications status Status Codes will be displayed on the STATUS LED using the following protocol 1 The number of short flashes indicates first digit of code 2 The number of long flashes indicates second digit of code 3 A shor
17. support staff should handle 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 that might apply Training for operators of the lifting equipment should include but not be limited to the following 1 Application of the lifter to the load and adjustment of the lifts to adapt to various sizes or kinds of loads 2 Instruction in any special operation or precaution 3 Condition of the load as it relates to operation of the lifting kit such as balance temperature etc Follow all applicable safety codes Wear safety shoes and work gloves INSPECTION 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 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death 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 switch with a suitable warning label 4 WARNING UNIT FALLIN
18. terminal and the other lead to remaining screw terminal there is no polarity to be observed It is strongly recommended that two wires be used to connect the thermistor to eliminate noise interference in temperature reading If there are not two spare wires 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 will appear at User Interface Re wire thermistor correctly for normal operation C Humidifier Connections The Infinity 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 to turn humidifier off Wire HUM and C terminals directly to humidifier as shown in Fig 14 SPECIAL PROCEDURES FOR 208 V OPERATION Be sure unit disconnect switch is open Disconnect the yellow primary lead from the transformer See unit wiring label See Fig 15 16 and 18 Connectthe yellow primary lead to the transformer ter
19. with clear water using a garden hose Be careful not to splash water on motors insulation wiring 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 Inspect the drain pan and condensate drain line when inspecting the coils Clean the drain pan and condensate drain by removing all foreign matter from the pan Flush the pan and drain trough with clear water Do not splash water on the insulation motor wiring or air filter s If the drain trough is restricted clear it with a plumbers snake or similar probe device Step 4 Outdoor Fan 4 CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in damage to unit components Keep the condenser fan free from all obstructions to ensure proper cooling operation Never place articles on top of the unit 1 Remove 6 screws holding outdoor grille and motor to top cover 2 Turn motor grille assembly upside down on top cover to expose fan blade 3 Inspect the fan blades for cracks or bends 4 If fan needs to be removed loosen setscrew and slide fan off motor shaft 5 When replacing fan blade position blade so that the hub is 1 8 in away from the motor end 1 8 in of motor shaft will be visible See Fig 24 6 Ensure that set screw engages the flat area on the mot
20. 0 90 44 2 44 2 60 60 8 8 5 0 18 1 20 8 66 8 70 3 80 90 5 4 7 2 26 0 30 0 76 7 81 7 90 100 208 230 1 60 187 253 26 9 145 0 1 5 9 1 i548 Higiene joo 11 3 15 0 54 2 62 5 111 9 122 4 125 125 060 15 0 20 0 72 2 83 3 134 5 148 4 150 150 34 6 34 6 40 40 3 8 5 0 10 4 12 0 47 6 49 6 60 60 208 230 3 60 187 253 17 6 123 0 1 5 9 1 7 5 10 0 20 8 24 1 60 7 64 7 70 70 11 3 15 0 31 3 36 1 73 7 79 7 80 80 15 0 20 0 41 6 48 0 86 6 94 6 90 100 12 LEGEND FLA Full Load Amps UL LRA Locked Rotor Amps C US MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection Rated Load Amps NOTES 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 unit shall be Power Supply fuse The CGA Canadian Gas Association units may be fuse or circuit breaker Minimum wire size is based on 60 C copper wire Ifother than 60 C wire is used or if length exceeds wire length in table determine size from NEC Unbalanced 3 Phase Supply Voltage Never operate a motor where a phase imbalance in supply volt age is greater than 2 Use the following formula to determine the percentage of voltage imbalance Voltage imbalance max voltage deviation from average voltage average voltage Heater capacity KW based on heater volt
21. 1 Connecting Ground Lead to Ground Screw 11 Routing Control Wires 11 Accessory Installation 16 Special Procedures for 208 v Operation 16 PRE START 0P ex utes nde E Pee 17 START UP ccc eene pn RpR sa T DAR Sar S BI ER MS 17 UntStart p is vss ask tg alex EE 17 23 Sequence of Operation 20 Check for Refrigerant Leaks 20 Start Up Adjustments 20 Checking Cooling and Heating Control Operation 20 Checking and Adjusting Refrigerant Charge 22 Refrigerant Charge 0 0 0 eee eee eee eee 22 NO Charge i Vs min saks b sta E B l abe Oba eas ENS 22 Low Charge 22 To Use Cooling Charging Charts 22 Indoor Airflow and Airflow Adjustments 22 Defrost Control e eO a Sak a VA 22 Quiet Shift ee ERO ORE p 22 Defrost iecit ee eb RUPES ERES 22 Emergency Heat Cool Mode 22 A05307 Fig 1 Unit 50CR MAINTENANCE 1 1 2 244 etr e e hens 24 28 Ait HEL n gs PCI m RP 25 Indoor Blower and Motor 25 Outdoor Coil Indoor Coil and Condensate Drain Pan 25 Outdoor RR Rh ba s dab ens 25 Electrical Controls and Wiring 26 Refrigerant Circuit lees 26 Indoor Aumf
22. 13 Fig 12 Condensate Trap Step 7 Install Electrical Connections 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death 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 Protection Association latest edition in Canada Canadian Electrical Code CSA C22 1 and local electrical codes HIGH VOLTAGE CONNECTIONS The unit must have a separate electrical service with a 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 for wire sizing See Table 2 for electrical data The field supplied disconnect may be mounted on the unit over the high voltage inlet hole See Fig 6 and 7 If the unit has an electric heater a second disconnect may be required Consult the Installation Start Up and Service Instructions provided with the accessory for electrical service connections Operation of unit on improper line voltage constitutes abuse and may cause unit damage tha
23. 4 vac signal on either heater stage output and it is not supplying signal Status Code 37 will be displayed on STATUS LED Unit control will turn off output and command blower motor to supply an airflow determined to be safe for current operation mode with electric heaters energized To find the fault 1 Stop all system operations at User Interface and check heater stage 24 vac outputs 2 Disconnect electric heater at power and check heater wiring for faults See Status Code 36 for more information STATUS CODE 44 MOTOR COMMUNICATION FAULT The MOTOR LED is connected to the blower motor communication line and works with the unit control microprocessor and STATUS LED to provide unit operation and troubleshooting information When motor is commanded to operate the MOTOR LED will be turned on and will flash each time instructions are sent to the motor 18 When motor is commanded to stop the MOTOR LED will be turned off The MOTOR LED will not flash to indicate communications when it is turned off Unit control is constantly communicating with the motor even when the motor and MOTOR LED are off If motor does not acknowledge receipt of communications the control will display Status Code 44 on STATUS LED and continue to try to communicate with the motor If motor acknowledges communication status code will be cleared If MOTOR LED is lit and flashing and motor does not run 1 Check the STATUS LED If STATUS LED is indi
24. 7 5 10 0 36 1 41 7 67 2 74 2 70 80 25 1 25 1 30 30 8 8 5 18 1 20 8 47 6 51 1 50 60 030 208 230 1 60 187 253 15 9 73 0 0 9 4 8 54 3 300300 60 20 7 5 10 0 36 1 41 7 70 2 77 2 80 80 29 5 29 5 35 35 3 8 5 18 1 20 8 52 1 55 6 60 60 208 230 1 60 187 253 16 9 83 0 0 9 6 8 5 4 7 2 26 0 30 0 62 0 67 0 70 70 7 5 10 0 36 1 41 7 74 7 81 6 80 90 036 11 3 15 0 54 2 62 5 97 2 107 7 100 110 23 7 23 7 30 30 3 8 5 0 10 4 12 0 36 7 38 7 45 45 208 230 3 60 187 253 12 2 77 0 1 6 6 8 25D 30 8124 407507 11 3 15 0 31 3 36 1 62 7 68 8 70 70 E E 35 7 35 7 45 45 3 8 5 0 18 1 20 8 58 3 61 7 70 70 5 4 7 2 26 0 30 0 68 2 73 2 80 80 208 230 1 60 187 253 22 4 105 0 0 9 6 8 25158 ever 30 60 11 3 15 0 54 2 62 5 103 4 113 8 110 125 042 15 0 20 0 72 2 83 3 126 0 139 9 150 150 27 0 27 0 35 35 3 8 5 0 10 4 12 0 40 0 42 0 50 50 208 230 3 60 187 253 15 4 88 0 0 9 6 8 7 2 10 0 20 8 24 1 53 0 57 0 60 60 11 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 3 8 5 0 18 1 20 8 57 6 61 1 70 70 5 4 7 2 26 0 30 0 67 5 72 5 80 80 208 230 1 60 187 253 21 3 109 0 1 6 6 8 2510 361 417 scalar 36 90 11 3 15 0 54 2 62 5 102 7 113 2 110 125 048 15 0 20 0 72 2 83 3 125 3 139 2 150 150 26 8 26 8 35 35 3 8 5 0 10 4 12 0 39 8 41 8 50 50 208 230 3 60 187 253 147 91 0 1 6 6 8 7 5 10 0 20 8 24 1 52 8 56 8 60 60 11 3 15 0 31 3 36 1 65 9 71 9 70 80 15 0 20 0 41 6 48 0 78 7 86 7 8
25. 902 0604206 1971110 1e E 6110 68b 0210 806 120 6 166 E 861 ere 09 1 0 2 802 7204206 1 X V 9Y 581 SOILISIUJIOVUVH LINN NI NN ALIAVYD 30 93137 LHOI3H LINN IM LINN 1921812313 bL 1908 JOLAYIS Ur AYINI 01313 thy l 00 Lv 9 861 9 61l 401 9 44 0S 12 0 9v6 008S0V MJA SNIN340 121 NYNLIY suorsuaunq HUN 090 Z7P0UI0S L St 306 1 AYINI 1081800 310H VIO 188 0 22 9170 or 9NIN320 19nd 44 AU1N3 YIMOd NOR 306 1 91 82871 um d 0 8870 0 22 X TINVd 53227 1921812313 89 01 0 1VIH 21812313 pur X v2 029 O A WIG 191712 677 V 1104 eun S180d JOTAYIS A81N3 01313 ET tan S3HONI NI 3UV NI SNOISN3HIQ L 0601 Q3S1NONdHOO 38AVM FONVAYOINId WILSAS N3HI H31SAS MAIA dOL TIVM WOYS 00721 8 v0 NVHL 5631 032V 1d SI LINN 31 S3ONVISIQ WAWININ 002116 s TINVd 1219 0079 07016 0440 3015 0 5 0079 0 76 straw kage ae eraran TRITT E _ SININ3YINOIY DIN 404 143201 007981 0 P16 AYINI YIMOd 301 8639099 1102 NI 8931381111 O
26. C99057 Fig 17 Line Power Connections 05303 Fig 18 Control Plate The low voltage circuit is fused by a board mounted automotive fuse placed in series with transformer SEC1 and circuit The C circuit of transformer circuit is referenced to chassis ground through a printed circuit run at SECZ and metal control board mounting eyelets Check to be sure control board is mounted securely using both factory installed screws ACCESSORY INSTALLATION A Accessory Electric Heaters Electric heaters may be installed in 50CR per instructions supplied with electric heater package See unit rating plate for factory approved electric heater kits NOTE Units installed without electric heat should have a factory supplied sheet metal block off plate installed over heater opening This reduces air leakage and formation of exterior condensation B Outdoor Air Thermistor OAT A 2 screw terminal strip is provided for connection of an outdoor temperature thermistor This strip is marked OAT NOTE While the installation of an outdoor temperature sensor using the Infinity control board OAT terminals is optional certain Infinity features ComfortHeat electric heat lockout auto humidity control 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 wires of field supplied thermostat wire cable wire one lead of thermistor to one screw
27. CIAN I 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 9 TO THE OUTDOOR COILS AND REVERSING VALVE ACCUMULATOR HAVE BEEN REMOVED START UP ELECTRICAL SUPPLY VOLTAGE COMPRESSOR AMPS INDOOR EVAPORATOR FAN AMPS TEMPERATURES OUTDOOR CONDENSER AIR TEMPERATURE DB 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 7310 W Morris St Indianapolis IN 46231 Printed in U S A Edition Date 03 06 Catalog No SOCR 1SI 32
28. Follow all safety codes Installation must be in compliance with local and national building codes Wear safety glasses protective clothing and work gloves Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Recognize safety information This is the safety alert symbol When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury 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 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 which will result in enhanced installation reliability or operation 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death 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 A CAUTION EQUIPMENT DAMAGE HAZARD Failure to follow this caution may result in unit component damage Puron R 410A systems operate at higher pressures than stan
29. G HAZARD Failure to follow this warning could result in personal injury or death Never stand beneath rigged units or lift over people INTRODUCTION The lifting rigging bracket is engineered and designed to be installed only on Small Packaged Products This bracket is to be used to rig lift a Small Packaged Product onto roofs or other elevated structures 4 WARNING PROPERTY DAMAGE HAZARD Failure to follow this warning could result in personal injury death or property damage Rigging brackets for one unit use only When removing a unit at the end of its useful life use a new set of brackets USE OF RIGGING BRACKET Field Installation of Rigging Bracket 1 If applicable remove unit from shipping carton Leave top shipping skid on the unit for use as a spreader bar to prevent 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 2 Remove 4 screws in unit corner posts 3 Attach each of the 4 metal rigging brackets under the panel rain lip See Fig 8 Use the screws removed in step 2 above to secure the brackets to the unit 4 WARNING PROPERTY DAMAGE HAZARD Failure to follow this warning could result in personal injury death or property damage Rigging bracket MUST be under the rain lip to provide adequate lifting A WARNING PROPERTY DAMAGE HAZARD Failure to follow this warning could result in personal in
30. I the Infinity control board will enable the following thermostat input terminals to allow simple thermostatic control of the SOCR unit Y amp O for cooling b W for electric heat if applicable c Y for heat pump heat The Infinity control will respond to cooling and heating demands with the maximum safe airflow based on electric heat size if applicable and unit capacity 22 Required Subcooling oF Required Liquid Line Temperature for a Specific Subcooling R 410A m Outdoor Ambient Temperature Required Subcooling Required Subcooling 75 24 82 28 95 35 105 41 Pressure psig 024 030 R N ARRA 10 3 5 7 98 54 94 52 9 5 189 93 52 8 8 4 9 86 48 7 8 4 3 196 17 6 9 8 16 8 9 3 16 5 9 2 15 4 8 6 203 1 eels 12 8 7 1 12 7 7 1 12 7 7 1 12 6 7 210 17 5 9 7 16 9 9 4 16 6 9 2 15 7 8 7 217 oe 13 7 7 6 13 72 13 7 2 14 5 8 1 11 5 6 4 2 Charging Procedure 1 Measure Discharge line pressure by attaching a gauge to the service port 2 2 Measure the Liquid line temperature by attaching a temperature sensing 260 device to it 2 2 2 2 3 Insulate the temperature sensing device so that the Outdoor Ambient 2 doesn t affect the reading 2 2 3 3 3 3 E o0 00 4 Refer to the required Subcooling in the table based on the model size and the Outdoor Ambient temperature on M NIN ooj
31. Motor HP RPM 1 8 825 1 8 825 1 8 825 1 8 825 1 4 1100 1 4 1100 INDOOR COIL Rows Fins in 3 15 3 15 4 15 3 15 4 15 4 17 Face Area sq ft 3 7 3 7 3 7 4 7 4 7 5 7 INDOOR BLOWER Nominal Airflow Comfort Variable based on Comfort Roll back see User Interface instructions for more information Efficiency 700 875 1050 1225 1400 1750 Max 800 1000 1200 1400 1600 2000 Size in 10x10 10x10 11x10 11x10 11x10 11x10 Motor HP RPM 1 2 1 2 3 4 3 4 3 4 1 HIGH PRESSURE SWITCH psig Cutout 650 15 420 25 Reset Auto LOSS OF CHARGE LOW PRESSURE SWITCH Liquid Line psig 20 5 45 10 Reset Auto Return IF Filters 20 24 1 20x24x1 24x30x1 24 36 1 24x36x1 24x36x1 Throwaway Required filter sizes shown are based on the larger of the ARI Air Conditioning and Refrigeration Institute rated cooling airflow or the heating airflow velocity of 300 ft minute for throwaway type or 450 ft minute for high capacity type Air filter pressure drop for non standard filters must not exceed 0 08 in wg _ USER INTERFACE F FROM POWER _ SOURCE COVER DISCONNECT RJ PER NEC a NEC NATIONAL ELECTRICAL CODE 06091 Fig 10 Typical Installation 10 Duct Covers A05301 Fig 11 50CR with Duct Covers On 1 25mm MIN Y TRAP OUTLET Y 2 60mm MIN C990
32. NY NOLLVHEdO 00 2b gg 3916 AYINI YIMOd SIOVIUNS ONY STTVM 13 2 2 YO 2018 ANY LINN 1007961 076 7301 AYINI YIMOd ONY LINN 00 2v 8 990L green 77777772015 AYINI MIMOd SLINN N338138 ERE ANE ssa STU v 08 981 L 19 9 1 O LE OL 6 87 101 090 TINVd 1N3H 21812313 08 LLL 9 LG L2l L L2 19 S v 86 8v0 EE TESCO LINN 10 WOL108 Em 7781200 ILISOddO 3015 1900 08 LLL L 0 901 8 06 89 6 66 88 vue TINA 30 401 0 2 8 Y 9907 11721 LYN OL SW SOA HITIK HINULI 2 1971110 Lev 10 0210 805 cs ree orie 922 667 09 0 2 802 09 1 062 802 0904206 8 0 812 LGv 1218 6 6 iS 611e 196 vpis OLZ cov 09 0 2 802 09 1 0 2 807 8708205 1979119 12 15 0211 025 1215 080 27111601 661 09 0 2 802 09 1 062 802 2704206 tee 6 1 x oy S81 SILLSIYILIVYYHI LINA 0 98 NI WW ALIAVYS 30 831N32 1H9I3H LINN LM LINN 1121812313 HO0S Step 4 Rig and Place Unit Rigging and handling of this equipment can be hazardous for many reasons due to the installation location roofs elevated structures etc Only trained qualified crane operators and ground
33. O NOT bypass this compressor time delay wait for 5 minutes until time delay relay is de energized Compressor will not start but condenser fan runs Faulty wiring or circuit Loose connections in compressor Check wiring and repair or replace Compressor motor burned out seized or internal overload open Determine cause Replace compressor Defective run capacitor overload or PTC positive temperature coefficient thermistor Determine cause and replace One leg of 3 phase power dead Replace fuse or reset circuit breaker Determine cause Low input voltage 20 percent low Determine cause and correct Three phase scroll compressor size 030 060 unit has a low pressure differential Scroll compressor is rotating in the wrong direction Correct the direction of rotation by reversing the 3 phase power leads to the unit Compressor cycles other than normally satis fying cooling heating calls Refrigerant overcharge or undercharge Recover refrigerant evacuate system and re charge to capacities shown on rating plate Defective compressor Replace and determine cause Insufficient line voltage Determine cause and correct Blocked outdoor coil Determine cause and correct Defective run start capacitor overload or start relay Determine cause and replace Faulty outdoor fan motor or capacitor Replace Damaged reversing valve Determine cause and correct Re
34. RNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death 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 1 Open all electrical disconnects and install lockout tag before starting any service work 2 Remove side duct covers to access bottom return and supply knockouts NOTE These panels are held in place with tabs similar to an electrical knockout 3 Use a screwdriver and hammer to remove the panels in the bottom of the composite unit base 4 Ensure the side duct covers are in place to block off the horizontal air openings See Fig 11 Step 6 Provide for Condensate Disposal NOTE Ensure that condensate water disposal methods comply with local codes restrictions and practices Theunits dispose of condensate 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 water When using a gravel apron make sure it slope
35. S0CR Infinity Single Packaged Heat Pump Units With Puron R 410A Refrigerant Sizes 024 060 Turn to the Experts Installation Instructions NOTE Read the entire instruction manual before starting the installation NOTE Installer Make sure the Owner s Manual and Service Instructions are left with the unit after installation TABLE OF CONTENTS Page SAFETY CONSIDERATIONS 2 INTRODUCTION bala a R E m E ees 2 RECEIVING AND INSTALLATION 2 16 Check Equipment i2 R bL 3 EIN RETE 2 Identify Unit lees em mh 2 Inspect Shipment cose ene mee mes 2 Provide Unit Support 12 120 sm sss m l ba esns eee eee 2 Roof Curb e Sars EEE 2 Slab Molifit se s Sag REN RR ER 2 Ground Mount 2 Provide Clearances 2 Rig and Place Unit ee i Inspection eet a Se 7 Introduction ssas ce eR rt RR DERISA 7 Use of Rigging Bracket 7 Select and Install 9 Converting Horizontal Discharge Units to Downflow Vertical Discharge Units 9 Provide for Condensate Disposal 9 Install Electrical Connections 11 High Voltage Connections 11 Routing Power Leads Into Unit 1
36. SSORY ELECT HEAT OPTION ONLY USED WITH HEATER OPTIONS 15KW 030 060 20KW 042 060 2 0 MAX WIRE 3 2 AMP MANUAL RESET BRN ELECTRIC HEAT 1 238 2 238 CONTROL CONTROL BOARD RED YEL ORN WHT BRN UNIT COMPONENT ARRANGEMENT l EG E N D OUTDOOR FAN SECTION Suus o DIP SWITCH SETTINGS O TERMINAL UNMARKED e HEATER 30 MINUTES MINUTES 90 MINUTES 120 MINUTES INDOOR FAN CONTROL BOX AREA cu COMPRESSOR MOTOR SPLICE MARKED 08 DEFROST BOARD SECTION FACTORY WIRING on on on FIELD CONTROL WIRING GND GROUND FIELD POWER WIRING HPS HIGH PRESSURE SWITCH mee IFM INDOOR FAN MOTOR ACCESSORY OR OPTIONAL pS LOW PRESSURE SWITCH n OFM OUTDOOR FAN MOTOR TRAN TRANSFORMER MS MESI wi eh BETWEEN DEFROST CYCLES MINUTES THE COMPRESSOR WILL SHUT OFF FOR 30 SEC ON DEFROST INITIATION AND TERMINATION IM THE OUIET SKIFT ON NOTES POSITION 1 IF ANY OF THE ORIGINAL WIRES FURBHED ARE REPLACED se DD JUMPERED TEST PINS USE METAL OBJECT IT MUST BE REPLACED WITH TYPE 90 DEGREE C WIRE OR uP FIELD SPEED UP CYCLE IT S EQUIVALENT 1 MOMENTARILY SHORT PINS AND RELEASE TO BYPASS Lar 2 SEE PRICE PAGES FOR USER INTERFACE AND SUBBASES COMPRESSOR OFF DE 3 USE 75 DEGREE COPPER CONDUCTORS FOR FIELD INSTALLATION 21 SHORT FOR 5 SEC AND RELEASE FOR FORCED DEFROST 4 DEFROST TIMER TO BE SET AT 90 MINUTES EXCEPT WILLEGE URAN DISCONNECT FOR 50J5048 060 MODELS SE
37. T AT 50 MINUTES DEFROST WILL TERMINATE IN 30 SEC IF OPEM DEFROST WILL TERMINATE NORMALLY DFT IS CLOSED FAN SEQUENCE CTD 71 72 COMPRESSOR DELAY 0 0 5 SEC T 5 MIN ENERGIZED oe ENERGIZED 63 d CLOSES OPENS TSAT 50CR500007 A05304 Fig 15 Wiring Schematics 50CR Single Phase 14 T FIELD BL K MAXIMUM WIRE SIZE 2 AWG sunny TI aed k Y R POWER BLU USED WITH EQUIP GND l ACCESSORY ELECT HEAT OPTION ONLY USED WITH HEATER OPTIONS SKW 024 042 2AWG MAX WIRE 30 AMP FOR 5 KW FUL 8 BN USED WITH ACCESSORY ELECT HEAT OPTION ONLY USED WITH HEATER OPTIONS 5KW 048 060 10KW 024 060 2 0 MAX WIRE 60 AMP FOR 20 USED WITH ACCESSORY ELECT HEAT OPTION ONLY USED WITH HEATER OPTIONS 15KW 030 060 20KW 042 060 2 0 MAX WIRE 3 2 AMP MANUAL RESET ELECTRIC HEAT CONTROL 1 938 2 218 CONTROL BOARD RED YEL ORN WHT BRN OAT UNIT COMPONENT ARRANGEMENT INDOOR FAN CONTROL BOX AREA SECTION gt IDEFROS BOARD NOTES LEGEND amp FIELD SPLICE TERMINAL MARKED Gi Bs Sm n C SPLICE MARKED 08 DEFROST BOARD FACTORY WIRING FIELD CONTROL WIRING GND GROUND FIELD POWER WIRING HPS HIGH PRESSURE SWITCH ACCESSORY OR OPTIONAL TEM INDOOR PAN MOTOR WIRING LPS LOW PRESSURE SWITCH OFM OUTDOOR FAN MOTOR TRAN TRANSFORMER RVS REVERSING VALVE DF
38. T DEFROST SWITCH IF ANY OF THE ORIGINAL WIRES FURBHED ARE REPLACED IT MUST BE REPLACED WITH TYPE 90 DEGREE C WIRE OR 117 EQUIVALENT SEE PRICE PAGES FOR USER INTERFACE AND SUBBASES USE 75 DEGREE COPPER CONDUCTORS FOR FIELD INSTALLATION DEFROST TIMER TO BE SET AT 90 MINUTES EXCEPT FOR 505048 060 MODELS SET AT 50 MINUTES FAN SEQUENCE CTD 11 12 COMPRESSOR DELAY 0 1 7930 0 5 SEC T T 5 MIN 6 6 a a ENERGIZED DE ENERGIZED CLOSES opens TSAT FOR 042 060 UNITS ONLY SCHEMATIC 208 230 3 60 OFM COMPRESSOR PLUG COMP BRN DIP SWITCH SETTINGS DEFAULT 30 MINUTES 60 MINUTES 90 MINUTES 120 MINUTES VIT A 0 FIELD SELECTABLE OPTIONS FOR TIME PERIOD BETWEEN DEFROST CYCLES MINUTES THE COMPRESSOR WILL SHUT OFF FOR 30 SEC ON DEFROST INITIATION AND TERMINATION IN THE QUIET SHIFT ON POSITION JUMPERED TEST PINS USE METAL OBJECT 5 M RE hd 11 MOMENTARILY SHORT PINS AND RELEASE TO BYPASS COMPRESSOR OFF DELAT 2 SHORT FOR SEC AND RELEASE FOR FORCED DEFROST 3 PERMANENT SHORT WILL BE IGNORED DEFROST WILL TERMINATE IN 30 SEC IF DFT OPEN DEFROST WILL TERMINATE NORMALLY IF DFT IS CLOSED 50CR500005 5 0 A05259 Fig 16 Wiring Schematics 50CR Three Phase 15 50CR GROUND SCREW IN SPLICE BOX SINGLE PHASE CONNECTIONS TO DISCONNECT PER NEC 3 PHASE CONNECTIONS NOTE Use copper wire only LEGEND NEC National Electrical Code Field Wiring Splice Connections
39. age of 208v amp 240v If power distibution voltage to unit varies from rated heater voltage heater kW will vary accordingly EXAMPLE Supply voltage is 230 3 60 AB 228 v AMO BC 231 v AC 227 v Average Voltage 28 221120 686 3 229 Determine maximum deviation from average voltage AB 229 228 1 v 231 229 2 229 227 2 Maximum deviation is 2 v Determine percent of voltage imbalance 2 Voltage Imbalance 100 x 229 0 8 This amount of phase imbalance is satisfactory as it is below the maximum allowable 2 IMPORTANT If the supply voltage phase imbalance is more than 2 contact your local electric utility company immediately C03014 Fig 13 Electrical Data Legend User Interface Humidifier Optional zz LEGEND Field Control Voltage Wiring Infinity Control Board Outdoor Air Thermistor if used ARR A05302 Fig 14 Control Voltage Wiring Connections 50CR FOR 042 060 UNITS ONLY SCHEMATIC 208 230 1 60 FIELD BLK C BLK MAXIMUM WIRE SIZE 2 AWG SUPPLY ACCESSORY MISMO COMPRESSOR PLUG ELECT HEAT COMP OPTION ONLY USED WITH HEATER OPTIONS SKW 024 042 2AWG MAX WIRE 30 AMP FOR 5 KW 8 FW USED WITH ACCESSORY ELECT HEAT OPTION ONLY USED WITH HEATER OPTIONS SKW 048 060 10KW 024 060 2 0 MAX WIRE 60 AMP FOR 20 USED WITH ACCE
40. cating a Status 44 code check the motor wiring harness for proper connection to control and motor receptacles 2 Check motor wiring harness to be sure all wiring complies with wiring diagram description makes a complete circuit from connector to connector and is not shorted 3 Check 12 vdc low voltage supply to motor at pins 1 and 2 of motor header connection to unit control If all checks are normal unit control is good and control module on motor may need replacement Check motor and Motor Control Module following the instructions in Section C ECM Motor Troubleshooting Shorted or mis wiring of the low voltage motor harness wiring will not cause damage to unit control or to motor control module If the MOTOR LED is off STATUS LED is indicating a Status Code 44 and motor is running 1 Disconnect the motor harness at the unit control If motor continues to run unit control is good and control module on motor may need replacement STATUS CODE 25 INVALID MOTOR MODEL SELECTION 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 for unit size or size data is invalid Status Code 25 will be displayed on STATUS LED 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 3
41. dard R 22 systems DO NOT use R 22 service equipment or components on Puron R 410A equipment Ensure service equipment is rated for Puron 410 INTRODUCTION The 50CR heat pump is fully self contained and designed for outdoor installation Standard units are shipped in a horizontal discharge configuration for installation on a ground level slab Standard units can be converted to downflow vertical discharge configurations for rooftop applications RECEIVING AND INSTALLATION Step 1 Check Equipment IDENTIFY 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 Forward claim papers directly to transportation company Manufacturer is not responsible for any damage incurred in transit Check all items against shipping list Immediately notify the nearest Carrier Air Conditioning office if any item is missing To prevent loss or damage leave all parts in original packages until installation Step 2 Provide Unit Support For hurricane tie downs contact distributor for details and PE Certificate Professional Engineering if required ROOF CURB Install accessory roof curb in accordance with instructions shipped with curb See Fig 2
42. e for unit and size installed NOTE Unit control will not operate electric heater until this Status Code is resolved If the heater size is set through the User Interface the heater will be operated as a single stage heater If staging is desired the IDR value must be read in by the unit control STATUS CODE 36 HEATER OUTPUT NOT SENSED WHEN ENERGIZED Unitcontrolis provided with circuitry to detect presence of a24 vac signal on electric heater stage 1 and stage 2 outputs 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 and adjust blower operation to a safe airflow level for energized electric heat stage s To find the fault 1 Check for 24 vac on heater stage outputs Unit control or sensing circuit may be bad NOTE It may be useful as an electric heater troubleshooting procedure to disconnect the system communications to force Status Code 16 enabling of emergency heat mode It is difficult to know which heater output is energized or not energized in normal operation When unit is operated in emergency heat mode using electric heaters both outputs are energized and de engergized together Terminal strip inputs to control can then be connected R to W to turn on both electric heat outputs Heater output sensing circuits can then be checked to resolve Status Code 36 or 37 problem
43. e is powered and connections are made A to A B to B etc and wiring is not shorted Mis wiring or shorting of the ABCD communications wiring will not allow successful communications Correcting wiring faults will clear the code and re establish communications Shorting or mis wiring low voltage system wiring will not cause damage to unit control or to User Interface but may cause the low voltage fuse to open STATUS CODE 46 BROWNOUT CONDITION If the secondary voltage of the transformer falls below 15 vac for a period exceeding 4 seconds Status Code 46 will be displayed on STATUS LED and the User Interface will command the control board to turn off Y output controlling compressor When secondary voltage rises above 17 vac for more than 4 seconds the brownout condition is cleared and normal system operation will resume subject to any minimum compressor off delay function which may be in effect Brownout does not affect blower or electric heater operation STATUS CODE 53 OUTDOOR AIR TEMPERATURE SENSOR FAULT If an OAT sensor is found at power up input is constantly checked to be within a valid temperature range If sensor is found to be open or shorted at any time after initial validation Status Code 53 will be displayed at amber STATUS LED Check for faults in wiring connecting sensor to OAT terminals Using an Ohm meter check resistance of thermistor for a short or open condition If thermistor is shorted or open replac
44. e it to return the system to normal operation If faultis in the wiring connections correcting the fault will clear the code and return the system to normal operation NOTE If fault condition is an open thermistor or a wiring problem that appears to be an open thermistor and the power to the unit is cycled off the fault code will be cleared on the next power up but the fault will remain and system operation will not be as expected This is because on power up the unit control cannot discern difference between an open sensor or if a sensor is not installed Step 2 Sequence of Operation 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 emergency situations described in Step 1 Start Up The User Interface uses temperature humidity and other data 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 the indoor blower at requested airflow for most modes The nominal requested airflow will be 350 cfm per ton of nominal cooling capacity as defined by unit size Actual airflow request will be adjusted from nominal using indoor and outdoor temperature and indoor humidity data to optimize the system operation for occupant comfort and system efficiency Refer to User Inter
45. en any two motor leads should be similar and resistance between any motor lead and unpainted motor end should exceed 100 000 ohms 3 Failing any of these tests entire ECM motor must be replaced 4 Passing all of the tests motor control module alone can be replaced MOTOR TURNS SLOWLY 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 2 Recheck airflow and system static pressure using User Interface service screens with access panel in place NOTE Blower motor faults will not cause a lockout of blower operation The unit control will attempt to run the blower motor as long as User Interface maintains a demand for airflow The unit control will not operate electric heaters while a fault condition exists The unit control communicates with the motor at least once every five seconds even when the motor is idle If during operation the unit control does not communicate with the motor for more than 25 seconds the motor will shut itself down and wait for communications to be reestablished D Using Motor LED in Troubleshooting The MOTOR LED is connected to the blower motor communication line and works with the unit control microprocessor and the STATUS LED to provide unit operation and troubleshooting information When the motor is commanded to operate the MOTOR LED will be turned on and will f
46. face literature for further system control details Airflow during electric heater operation must be greater than a 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 NOTE Once the compressor has started and then has stopped it should not be started again until 4 minutes have elapsed The cooling cycle remains until the room temperature drops to point that is slightly below the cooling control setting of the user interface Additionally there is a 5 minute compressor delay built into the control for heat pump heating mode Step 3 Check for Refrigerant Leaks Locate and repair refrigerant leaks and charge the unit as follows 1 Use both high and low pressure ports to relieve system pressure and reclaim remaining refrigerant 2 Repair leak following accepted practices NOTE Install a bi flow filter drier whenever the system has been opened for repair 3 Check system for leaks using an approved method 4 Evacuate refrigerant system and reclaim refrigerant if no additional leaks are found 5 Charge unit with Puron R 410A refrigerant using a volumetric charging cylinder or accurate scale Refer to unit rating plate for required charge Step 4 Start Up Adjustments Complete the required procedures given in the Pre Start Up section before starting the unit Do not
47. jury death or property damage Do not strip screws when re securing the unit If a screw is stripped replace the stripped one with a larger diameter screw included Rigging Lifting of Unit 1 Bend top of brackets down approximately 30 degrees from the corner posts 2 Attach straps of equal length to the rigging brackets at opposite 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 4 After unit is securely in place detach rigging straps Remove comer posts screws and rigging brackets then reinstall screws A WARNING UNIT FALLING HAZARD Failure to follow this warning could result in personal injury death or property damage When straps are taut the clevis should be a minimum of 36 inches above the unit top cover After the unit is placed on the roof curb or mounting pad remove the top crating On 50 units only 2 wire ties fastened to the outdoor coils and reversing valve accumulator assembly must be cut Remove the left and front louvered panels and corner post to access wire 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 50CR DETAIL A 03017 Fig 8 Rigging Bracket Under
48. l protector will shut off the compressor The 3 phase power leads to the unit must be reversed to correct rotation When turning backwards the difference between compressor suction and discharge pressures may be dramatically lower than normal 20 ACCUMULATOR D ACCUMULATOR J OUTDOOR COIL INDOOR COIL Ly TXV Metering pus po j Position E gt __ SS LCS c 9 amp gt n J U U D Wi 4 LEGEND Position HPS High Pressure Switch LCS Loss of Charge Switch Gf AccuraterMetering Device 4 Arrow indicates direction of flow C03011 Fig 20 Typical Heat Pump Operation Cooling Mode OUTDOOR COIL gt INDOOR COIL E cS TXV in Bypass E Position PRE OO F H 4 k LCS Le 26 TSS 8 Metering Fosition LEGEND HPS High Pressure Switch LCS Loss of Charge Switch TH Accuratef Metering Device 4 Arrow indicates direction of flow C03012 Fig 21 Typical Heat Pump Operation Heating Mode 21
49. l 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 24 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow these warnings could result in serious injury or death 1 Turn off electrical power to the unit before performing any maintenance or service on this unit 2 Use extreme caution when removing panels and parts 3 Never place anything combustible either on or in contact with the unit A CAUTION UNIT OPERATION HAZARD Failure to follow this caution may result in equipment damage or improper operation Errors made when reconnecting wires may cause improper and dangerous operation Label all wires prior to disconnecting when servicing The minimum maintenance requirements for this equipment as follows 1 Inspect air filter s each month Clean replace when necessary 2 Inspect indoor coil drain pan and condensate drain each cooling season for cleanliness Clean when necessary 3 Inspect blower motor and wheel for cleanliness each cooling season Clean when necessary 4 Check electrical connections for tightness and controls for proper operation each cooling season Service when necessary Step 1 Air Filter IMPORTANT Never operate the unit without a suitable air filter in the return air duct system Always replace the filter with the same dime
50. lash each time instructions are sent to the motor When the motor is commanded to stop the MOTOR LED will be turned off 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 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 STATUS LED for the Status Code Refer to the troubleshooting instructions for the indicated Status Code in Section E Unit Troubleshooting E Unit Troubleshooting Unit faults indicated by flashing codes on the amber system STATUS LED can be resolved using troubleshooting information provided below Codes are listed in order of their priority highest to lowest Though multiple faults can exist at any time only the highest priority code will be displayed on STATUS LED Clearing the indicated fault when multiple faults exist will cause the next highest priority Status Code to be flashed existing faults as well as a fault history can be viewed at User Interface STATUS CODE 45 CONTROL BOARD TEST FAULT Unit control has failed internal start up tests and must be replaced No other service procedure will correct STATUS CODE 37 HEATER OUTPUT SENSED ON WHEN NOT ENERGIZED Unitcontrolis provided with circuitry to detect presence of a24 vac signal on electric heater stage 1 and stage 2 outputs If unit control detects a 2
51. le and restarting of heating cycle It is selected by placing DIP switch 3 on defrost board in ON position When Quiet Shift switch is placed in ON position and a defrost is initiated the following sequence of operation will occur Reversing valve will energize outdoor fan will turn off compressor will turn Off for 30 sec and then turn back on to complete defrost At the start of heating after conclusion of defrost reversing valve will 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 DEFROST The defrost control is a time temperature control which includes a field selectable time period DIP switch 1 and 2 on the board between defrost cycles of 30 60 90 or 120 minutes factory set at 30 minutes To initiate a forced defrost two options are available depending on the status of the defrost thermostat If defrost thermostat is closed speedup pins 71 must be shorted by placing a flat head screw driver in between for 5 sec and releasing to observe a complete defrost cycle When the Quiet Shift switch is 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 defrost cycle will be observed If defrost thermostat is in open position and speedup pins are shorted with a flat head screw drive
52. llowing 1 Allunits should have field supplied filters or accessory filter rack installed in the return air side of the unit Recommended sizes for filters are shown in Table 1 2 Avoid abrupt duct size increases and reductions Abrupt change in duct size adversely affects air performance IMPORTANT Use flexible connectors between ductwork and unit to prevent transmission of vibration Use suitable gaskets to ensure weather tight and airtight seal When electric heat is installed 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 connector or sheet metal sleeve must extend 24 in from electric heater element 3 Size ductwork for max cooling air quantity 400 cfm ton 4 Seal insulate and weatherproof all external ductwork Seal insulate and cover with a vapor barrier all ductwork passing through conditioned spaces Follow latest Sheet Metal and Air 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 wall or roof according to good construction practices CONVERTING HORIZONTAL DISCHARGE UNITS TO DOWNFLOW VERTICAL DISCHARGE UNITS 4 WA
53. low oet eme mena 26 Metering Devices TXV amp AccuRater Piston 26 Pressure Switches 0 s asas 830 iarsa 26 Loss of Charge Switch 27 High Pressure Switch 27 Copeland Scroll Compressor Puron Refrigerant 27 Refrigerant System 27 Refrigerant 27 Compressor 522m Remensi 27 Servicing Systems Roofs with Synthetic Materials 27 Liquid Line Filter Drier 28 Puron R 410A Refrigerant Charging 28 System 28 Loss of Charge Switch 28 Check Defrost 28 TROUBLESHOOTING 2222212221025 0 v bias eee eee 28 START UP CHECKLIST 28 50CR SAFETY CONSIDERATIONS Installation and servicing of this equipment can be hazardous due to mechanical and electrical components Only trained and qualified personnel should install repair or service this equipment Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters All other operations must be performed by trained service personnel When working on this equipment observe precautions in the literature on tags and on labels attached to or shipped with the unit and other safety precautions that may apply
54. minal labeled 200 v 16 A gt R HalvaH A03169 Fig 19 Detail of Printed Circuit Board PRE START UP 4 WARNING FIRE EXPLOSION ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death and or property damage 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 compressor terminal cover is in place and secured Do not remove compressor terminal cover until all electrical sources are disconnected and tagged Relieve and recover all refrigerant from system before touching or disturbing anything inside terminal box if refrigerant leak is suspected around compressor terminals Never attempt to repair soldered connection while refrigerant system is under pressure Do not use torch to remove any component System contains oil and refrigerant under pressure To remove a component wear protective goggles and proceed as follows a Shut off electrical power to unit and install lockout tag Relieve and reclaim all refrigerant from system using both high and low pressure ports Cut component connecting tubing with tubing cutter and remove component from unit Carefully unsweat remaining tubing stubs when necessary Oil can ignite when exposed to torch flame Use the Start Up Checklist supplied at the e
55. nd of this book and proceed as follows to inspect and prepare the unit for initial start up 1 Remove all access panels 2 Read and follow instructions on all DANGER WARNING CAUTION and INFORMATION labels attached to or shipped with unit 3 Make the following inspections a Inspect for shipping and handling damages such as broken lines loose parts disconnected wires etc b Inspect for oil at all refrigerant tubing connections 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 refrigerant leak is detected see following Check for Refrigerant Leaks section c Inspect all field and factory wiring connections Be sure that connections are completed and tight d Ensure wires do not touch refrigerant tubing or sharp sheet metal edges e Inspect coil fins If damaged during shipping and handling carefully straighten fins with a fin comb 4 Verify the following 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 and miscellaneous loose parts have been removed 5 Compressors are internally spring mounted Do not loosen or remove compressor holddown bolts 6 Each unit system has two Schrader type ports one low
56. nder in upright position For cylinders equipped with a dip tube charge Puron units with cylinder in upright position and a commercial metering device in manifold hose Charge refrigerant into suction line 27 Step 14 System Information LOSS OF CHARGE 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 NOTE Because these switches are attached to refrigeration system under pressure it is not advisable to remove this device for troubleshooting unless you are reasonably certain that a problem exists If switch must be removed remove and recover all system charge so that pressure gauges read psi Never open system without breaking vacuum with dry nitrogen CHECK DEFROST THERMOSTAT There is a liquid header with a brass distributor and feeder tube going into outdoor 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 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 temperature range is closed
57. not limited to compressor replacement repairing refrigerant leaks and replacing refrigerant components such as filter drier pressure switch metering device coil accumulator or reversing valve Synthetic Roof Precautionary Procedure 1 Cover extended roof working area with an impermeable polyethylene plastic drip cloth or tarp Cover an approximate 10 X 10 ft area 2 Cover area in front of the unit service panel with a terry cloth shop towel to absorb lubricant spills and prevent run offs and protect drop cloth from tears caused by tools or components 3 Place terry cloth shop towel inside unit immediately under component s to be serviced and prevent lubricant run offs through the louvered openings in the unit base 4 Perform required service 5 Remove and dispose of any oil contaminated material per local codes LIQUID LINE FILTER DRIER The biflow filter drier is specifically designed to operate with Puron 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 system Do not unsweat a filter drier from the system Heat from unsweating will release moisture and contaminants from drier into system PURON R 410A REFRIGERANT CHARGING Refer to unit information plate and charging chart Some R 410A refrigerant cylinders contain a dip tube to allow liquid refrigerant to flow from cyli
58. nsional size and type as originally installed See Table 1 for recommended filter sizes 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 the filter becomes clogged with dust and lint Step 2 Indoor Blower and Motor NOTE motors are pre lubricated Do not attempt to lubricate these motors For longer life operating economy and continuing efficiency clean accumulated dirt and grease from the blower wheel and motor 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Disconnect and tag electrical powerto the unit before cleaning and lubricating the blower motor and wheel Step 3 Outdoor Coil Indoor Coil and Condensate Drain Pan Inspect the condenser coil evaporator coil and condensate drain pan at least once each year The coils are easily cleaned when dry therefore inspect and clean 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 cleaner using the soft brush attachment Be careful not to bend the fins If coated with oil or grease clean the coils with a mild detergent and water solution Rinse coils
59. o 4 2 o NID o e NNN ND Noa R 85 6 Find the Pressure Value in the table corresponding to the the measured 56 58 61 63 65 67 69 71 72 74 76 78 80 82 84 86 88 90 92 94 96 98 61 63 66 68 70 72 74 76 77 79 81 83 85 87 89 91 93 95 97 99 5 Interpolate if the Outdoor ambient temperature lies in between the table values Extrapolate if the temperature lies beyond the table range 318 Pressure of the Compressor Discharge line Nao 3 9 9 9 9 9 107 108 103 105 100 107 102 414 109 104 87 89 1 3 5 7 8 o oo AN 106 108 109 24 3 38 45 52 68 76 84 92 00 09 27 36 7 Read across from the Pressure reading to obtain the Liquid line 45 101 temperature for a required Subcooling 54 103 8 Add Charge if the measured temperature is higher than the table value 64 105 100 74 102 84 94 04 24 34 44 54 64 74 84 94 04 3 3 3 3 3 4 4 4 4 4 4 4 4 4 5 124 514 126 524 127 534 129 C03027 Fig 22 Cooling Charging Table Subcooling Table 3 ECM Wet Coil Pressure Drop in wg UNIT STANDARD CFM SCFM SIZE 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 024 0 005 0 007 0 010 0 012 0 015 030 E 0 007 0 010 0 012 0 015 0 018 0 021 0 024
60. or shaft when tightening 7 Replace grille 3 mU 7 Infinity Top 06035 UNIT SIZE AF DIMENSION Infinity 024 25 030 25 036 24 042 24 048 24 060 19 Fig 24 Fan Blade Clearance Step 5 Electrical Controls and Wiring Inspect and check the electrical controls and wiring annually Be sure to turn off the electrical power to the unit Remove access panel to locate all the electrical controls and wiring Check all electrical connections for tightness Tighten all screw connections If any smoky or burned connections are noticed disassemble the connection clean all the parts re strip the wire end and reassemble the connection properly and securely After inspecting the electrical controls and wiring replace all the panels Start the unit and observe at least one complete cooling cycle to ensure proper operation If discrepancies are observed in operating cycle or if a suspected malfunction has occurred check each electrical component with the proper electrical instrumentation Refer to the unit wiring label when making these checks 25 50CR Balance Point Worksheet Based on Entering Indoor Air of 70 Deg F and Rated CFM I D H o w gt S gt Unit Integrated Heating Capacity 1000BTUH 10 20 30 40 50 Outdoor Air Temp Deg F C03008 Fig 25
61. pressor used in this product is specifically designed to operate with Puron R 410A refrigerant and cannot be 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 4 WARNING EXPLOSION FIRE ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death and or property damage Wear safety glasses and gloves when handling refrigerants Keep torches and other ignition sources away from refrigerants and oils The scroll compressor pumps refrigerant throughout the system by the interaction of a stationary and an orbiting scroll The scroll compressor has no dynamic suction or discharge valves and it is more tolerant of stresses caused by debris liquid slugging and flooded starts The compressor is equipped with an anti rotational device and an internal pressure relief port The anti rotational 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 psi differential pressure The Copeland scroll compressor uses Mobil 3MA POE oil This is the only oil allowed for oil recharge Step 13 Refrigerant System
62. r for 5 sec and released a short defrost cycle will be observed actual length is dependent upon the 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 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 Shift is in OFF position only a brief 30 sec cycle will be observed Ifitis desirable to observe a complete defrost in warmer weather the defrost thermostat must be closed as follows 1 Turn off power to outdoor unit 2 Disconnect outdoor fan motor lead from OF2 on control board See Fig 23 Tape to prevent grounding 3 Restartunitin heating mode allowing frostto accumulate on outdoor coil 4 After a few minutes in heating mode liquid line temperature should drop below closing point of defrost thermostat approximately 30 F NOTE Unit will remain in defrost until defrost thermostat reopens at approximately 80 F coil temperature at liquid line or remainder of defrost cycle time 5 Turn off power to outdoor and reconnect fan motor lead to OF2 on control board after above forced defrost cycle NON COMMUNICATING EMERGENCY COOLING HEATING MODE This mode ofoperation is provided only in the case where the UI has failed or is otherwise unavailable If communications cannot be established with the U
63. re a short does not cause a failure of replacement fuse If COMM LED does not light within proper time period and status code is displayed 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 not shorted Mis wiring or shorting of the ABCD communications wiring will not allow successful communications NOTE Shorting or mis wiring low voltage system wiring will not cause damage to unit control or user interface but may cause low voltage fuse to open C ECM Motor Troubleshooting The ECM motor used in this product consists of two parts the control module and the motor winding section Do not assume motor or module is defective if it will not start Use the designed in 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 VERIFY MOTOR WINDING SECTION 4 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death After disconnecting power from the ECM motor wait at least 5 minutes before removing the control section Internal capacitors require time to discharge Before proceeding to replace a motor control module 1 Check motor winding section to be sure it is functional 2 Remove motor control module section and unplug winding plug Motor shaft should turn freely resistance betwe
64. replacements for the Puron R 410A system C99097 Fig 26 Refrigerant Circuit Step 10 Loss of Charge Switch This switch is located on the liquid line and protects against low suction pressures caused by such events as loss of charge low 26 airflow across indoor coil dirty filters etc It opens pressure drop at about 20 psig If system pressure is above this switch should be closed To check switch 1 Turn off all power to unit 2 Disconnect leads on switch 3 Apply ohm meter leads across switch You should have continuity on a good switch NOTE Because these switches are attached to refrigeration system under pressure it is not advisable to remove this device for troubleshooting unless you are reasonably certain that a problem exists If switch must be removed remove and recover all system charge so that pressure gauges read 0 psi Never open system without breaking vacuum with dry nitrogen Step 11 High Pressure Switch The high pressure switch is located in the discharge line and protects against excessive condenser coil pressure It opens at 650 psig High pressure may be caused by a dirty outdoor coil failed fan motor or outdoor air recirculation To check switch 1 Turn off all power to unit 2 Disconnect leads on switch 3 Apply ohm meter leads across switch You should have continuity on a good switch Step 12 Copeland Scroll Compressor Puron Refrigerant The com
65. s STATUS CODE 41 BLOWER MOTOR FAULT If MOTOR LED is lit and flashing 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 wiring harness and unit control are operating properly do not replace 2 Check to be sure that the blower wheel is not rubbing the housing 3 Check motor to be sure that the motor shaft is not seized motor control module must be removed and electronics disconnected from windings to perform this check properly 4 Check motor windings section following instructions in Section C ECM Motor Troubleshooting If all these checks are normal the motor control module may need replacement STATUS CODE 16 SYSTEM COMMUNICATION FAULT If at any time system communications are not successful for a period exceeding 2 minutes the unit control will only allow emergency heating or cooling operation using a common thermostat and the R C Y O W terminal strip connections and will display Status code 16 on the amber STATUS 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 50CR Check system wiring to be sure the User Interfac
66. s away from the unit If the installation requires draining the condensate water away from the unit install a field supplied 2 in trap at the condensate connection to ensure proper drainage Condensate trap is available 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 aslope ofat least 1 in for every 10 ft of horizontal run Be sure to check the drain trough for leaks Prime the trap at the beginning of the cooling season start up 50CR Table 1 Physical Data Unit 50CR UNIT SIZE 024 030 036 042 048 060 NOMINAL CAPACITY ton 2 2 1 2 3 3 1 2 4 5 OPERATING WEIGHT Ib 350 350 373 440 463 499 Compressor Scroll Refrigerant R 410A Quantity Ib 7 5 8 9 5 10 8 11 5 14 0 REFRIGERANT METERING DEVICE TXV ORIFICE OD in 0 035 2 0 035 2 0 038 2 0 038 2 2 038 Left OD Coil 0 042 Left OD Coil 0 046 Right OD Coil 0 052 Right OD Coil OUTDOOR COIL Rows Fins in 2 21 2 21 2 21 2 21 2 21 2 21 Face Area sq ft 12 3 12 3 13 6 15 4 17 2 19 4 OUTDOOR FAN Nominal Cfm 2700 2700 2800 2800 3300 3300 Diameter 22 22 22 22 22 22
67. striction in refrigerant system Locate restriction and remove Compressor operates continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size UI temperature set too low too high Reset UI setting Low refrigerant charge Locate leak repair and recharge Frosted coil with incorrect defrost operation Check defrost time settings Reset as necessary Check defrost temperature switch Replace as necessary Air in system Recover refrigerant evacuate system and re charge Outdoor coil dirty or restricted Clean coil or remove restriction Excessive head pressure Dirty air filter Replace filter Dirty indoor or outdoor coil Clean coil Refrigerant overcharged Recover excess refrigerant Air in system Recover refrigerant evacuate system and re charge Heat Indoor air restricted or recirculating Determine cause and correct Indoor or outdoor air restricted or air short cycling Determine cause and correct Continued next page 30 Table 7 Troubleshooting Chart Cont d SYMPTOM CAUSE REMEDY Head pressure too low Low refrigerant charge Check for leaks repair and recharge Restriction in liquid tube Remove restriction Excessive suction pressure Cool High Heat load Check for source and eliminate Reversing valve hung up or leaking internally
68. t be used as well This bracket must also be used when required by code for hurricane or seismic conditions This bracket is available through Micrometl Fig 2 Roof Curb Dimensions 50CR MAXIMUM ALLOWABLE DIFFERENCE A B B C A C 1 4 1 4 1 4 99065 Fig 3 Unit Leveling Tolerances OPTIONAL Wi Il 4 EVAP COIL COND COIL C99096 Fig 4 Slab Mounting Detail A06114 Fig 5 Corner Weights Lbs CORNER WEIGHTS SMALL CABINET CORNER WEIGHTS LARGE CABINET Unit 024 030 036 Unit 042 048 060 Total Weight 349 349 373 Total Weight 438 463 499 Sa Corner Weight 1 70 70 75 g Corner Weight 1 88 98 107 3 Corner Weight 2 54 54 58 8 Corner Weight 2 68 61 70 Corner Weight 3 84 84 90 Corner Weight 3 106 127 136 Corner Weight 4 141 141 150 Corner Weight 4 177 177 186 86 9 6vc H0S 18 8 76 9 1197181 LESE ONINAdO 1210 NYNLIY 6 066 0 ONINAdO 1200 Alddfs S3HONI NI NI SNOISN3WIQ GFSIWOUdNOD 38AVW 3ONVWHOJHJd WILSAS NIHL WILSAS TIVM 00 21 8 70 NVHL SS31 0132 14 SI LINNA 4I S3ONVISIQ WAWINIWS 1002 009 0079 mo 00 9 00 9 8 v0t TINVd LING 0716 7751910 31150990 3015 0 6 en QUEUE LINA SINJWJYINOJY JIN 403 1d30X1 8707 re oe cy
69. t could affect warranty 4 CAUTION UNIT COMPONENT DAMAGE HAZARD Failure to follow this caution may result in damage to the unit being installed 1 Make all electrical connections in accordance with NEC ANSI NFPA latest edition and local electrical codes governing such wiring In Canada all electrical connections must be in accordance with CSA standard C22 1 Canadian Electrical Code Part 1 and applicable local codes Refer to unit wiring diagram Use only copper conductor for connections between field supplied electrical disconnect switch and unit DO NOT USE ALUMINUM WIRE Besure that high voltage power to unit is within operating 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 and or phase imbalance Insulate low voltage wires for highest voltage contained within conduit when low voltage control wires are in same conduit as high voltage wires Do not damage internal components when drilling through any panel to mount electrical hardware conduit etc ROUTING POWER LEADS INTO UNIT Use only copper wire between disconnect and unit The high voltage leads should be in a conduit until they enter the duct panel conduit termination at the duct panel must be watertight Run the high voltage leads through the power entry knockout on the power entry side panel See Fig 6 and 7 for location and si
70. t flash is 0 25 seconds on A long flash is 1 second on 4 The time between flashes is 0 25 seconds 5 The time between last short flash and first long flash is 1 second 6 The LED will be off for 2 5 seconds before repeating code B Control Start Up and System Communications Troubleshooting On power up green COMM LED will be turned off until successful system communications are established this should happen within 17 50CR 10 seconds Once communications 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 on until a request for operating mode is received The STATUS LED will be on any time unit is in idle mode If at any time communications are not successful for a period exceeding 2 minutes the Infinity control will only allow emergency heating or cooling operation using a common thermostat and the R C Y O W terminal strip connections and will display Status Code 16 System Communication Fault on amber STATUS LED No further troubleshooting information will be available at User Interface until communications are re established If COMM LED does not light within proper time period and status code is not displayed 1 Check system transformer high and low voltage to be sure the system is powered 2 Check fuse on control board to be sure it is not blown If fuse is open check system wiring before replacing it to be su
71. uum pumps will not remove moisture from oil Only use factory specified liquid line filter driers with rated working pressures no less than 600 psig Do not install a suction line filter drier in liquid line POE oils absorb moisture rapidly Do not expose oil to atmosphere POE oils may cause damage to certain plastics and roofing materials Wrap all filter driers and service valves with wet cloth when brazing A Puron liquid line filter drier is required on every unit Do not use an R 22 TXV Never open system to atmosphere while it is under a vacuum When system must be opened for service break vacuum with dry nitrogen and replace filter driers Do not vent Puron into the atmosphere Observe all warnings cautions and bold text Do not leave Puron suction line driers in place for more than 72 hrs 29 50CR Table 7 Troubleshooting Chart SYMPTOM CAUSE REMEDY Compressor and outdoor fan will not start 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 loss of charge or low pressure switch Replace component Insufficient line voltage Determine cause and correct Incorrect or faulty wiring Check wiring diagram and rewire correctly User Interface setting too low too high Reset Ul setting Units have a 5 minute time delay D
72. ze For single phase units connect leads to the black and yellow wires for 3 phase units connect the leads to the black yellow and blue wires CONNECTING GROUND LEAD TO GROUND SCREW Connect the ground lead to the chassis using the ground screw in the wiring splice box See Fig 14 and 17 ROUTING CONTROL POWER WIRES For detailed instruction on the low voltage connections to the User Interface UT refer to the UI installation guide Form drip loop with the control leads before routing them into the unit Route the low voltage control leads through grommeted 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 The unit transformer supplies 24 v power for complete system including accessory electrical heater A fuse is provided in the 24 v circuit on the control board See Fig 19 see the caution label on the transformer Transformer is factory wired for 230 v operation If supply voltage is 208 v rewire transformer primary as described in Special Procedures for 208 v Operation section 11 50CR Table 2 Electrical Data 50CR VOLTAGE ELECTRIC HEAT SINGLE POINT POWER UNIT SIZE ai RANGE COMPRESSOR OFM M a SUPPLY FLA MCA MIN RLA LRA kW 22 1 22 1 30 30 3 8 5 18 1 20 8 44 6 48 1 50 50 024 208 230 1 60 187 253 18 5 61 0 0 9 4 8 350505

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