Page 1: Table Of Contents
CHS183-243 Heat Pump Condensing Units with R-410A Refrigerant Installation, Start-Up and Service Instructions START-UP ......17 CONTENTS CHS Units .
Page 2: Safety Considerations
• COMPRESSOR CONTROL • DEFROST WARNING • DEFROST THERMOSTATS • INDOOR FAN OFF DELAY UNIT OPERATION AND SAFETY HAZARD • DEFROST SPEEDUP FUNCTIONS Failure to follow this warning could cause personal Comfort Alert Diagnostic Module ..28 injury, death and/or equipment damage.
Page 3: Acid Test
ACID TEST CAUTION If the existing system is being replaced because of a com- pressor electrical failure, assume acid is in system. If sys- UNIT DAMAGE HAZARD tem is being replaced for any other reason, use an acid test Failure to follow this caution may result in equipment kit to determine acid level.
Page 4 NOTE: Dimensions and drawings for CHSD 180 also apply to CHS183*T/U. Fig. 1 — CHS183 Unit Dimensions...
Page 5 NOTE: Dimensions and drawings for CHSD 240 also apply to CHS243*T/U. Fig. 2 — CHS243 Unit Dimensions...
Page 6 Table 2 — Physical Data — CHS183-243 Units — 60 Hz English UNIT CHS183*T/U CHS243*T/U NOMINAL CAPACITY (tons) OPERATING WEIGHTS (lb) Aluminum-Fin Coils 1015 REFRIGERATION SYSTEM R-410A R-410A No. Circuits / No. Comp. / Type 2 / 2 / Scroll...
Page 7 Table 3 — Physical Data — CHS183-243 Units — 60 Hz SI UNIT CHS183*T/U CHS243*T/U NOMINAL CAPACITY (kW) 52.8 70.3 OPERATING WEIGHTS (kg) Aluminum-Fin Coils REFRIGERATION SYSTEM R-410A R-410A No. Circuits / No. Comp. / Type 2 / 2 / Scroll...
Page 8 MODEL SERIES Position Number C = R-410A Condensing Unit H = Heat Pump Type S = Standard ASHRAE 90.1-2016 Efficiency 183 = 15 Tons (Dual circuit, 3-stage cooling) Nominal 243 = 20 Tons (Dual circuit, 3-stage cooling) Cooling Capacity H = 208/230-3-60 L = 460-3-60 S = 575-3-60 Voltage...
Page 9: Installation
INSTALLATION INSPECT SHIPMENT File a claim with shipping company if the shipment is dam- Jobsite Survey aged or incomplete. Complete the following checks before installation. CONSIDER SYSTEM REQUIREMENTS 1. Consult local building codes and the NEC (National Electrical Code) ANSI/NFPA 70 for special installa- •...
Page 10: Provide Safety Relief
Table 4 — CHS183-243 Piping Recommendations (Two-Circuit Unit) R-410A EQUIVALENT LENGTH (ft) Length Linear 0-24 25-49 50-74 75-99 100-125 Model Nominal Capacity Length Equiv 0-37 38-74 75-112 113-149 150-188 Liquid Line (in.) Max Lift Cool CHS183 Max Lift Heat Vapor Line (in.)
Page 11: Install Liquid Line Solenoid Valves
Table 6 — Refrigerant Specialties Part Numbers LIQUID LINE SIZE (in.) LIQUID LINE SOLENOID VALVE (LLSV) SOLENOID COIL SIGHT GLASS 1179872 plus 1183150 biflow kit 1179874 1179877 1179873 plus 1183150 biflow kit 1179874 1179878 INSTALL LIQUID LINE SOLENOID VALVES interconnecting tube brazing as been completed. The stub tube connections include 1/4 in.
Page 12: Evacuation/Dehydration
EVACUATION/DEHYDRATION Table 8 — Minimum Outdoor Air Operating Temperature Evacuate and dehydrate the connected refrigeration sys- tem(s) (excluding the CHS unit) to 500 microns using a two- MINIMUM OUTDOOR TEMP stage vacuum pump attached to the service ports outside the PERCENT °F (°C) CHS service valves, following description in GTAC II,...
Page 13: Units Without Factory-Installed Disconnect
connecting field power wires to unit connection points. Make Units Without Disconnect Option field power connections directly to line connection pressure lugs only. WARNING FIRE HAZARD Failure to follow this warning could result in intermittent Disconnect operation or performance satisfaction. Do not connect aluminum wire between disconnect switch and condens- ing unit.
Page 14: Installing Weatherproof Cover
Using unit-mounted convenience outlets: Units with unit- mounted convenience outlet circuits will often require that Convenience two disconnects be opened to de-energize all power to the Outlet unit. Treat all units as electrically energized until the conve- GFCI nience outlet power is also checked and de-energization is confirmed.
Page 15: All Units
THERMOSTAT GFCI Receptacle Cover — While-In-Use Install a field-installed accessory thermostat according to in- Not Included Weatherproof stallation instructions included with the accessory. For com- plete economizer function, select a two-stage cooling ther- mostat. Locate the thermostat accessory on a solid wall in the conditioned space to sense average temperature in ac- cordance with the thermostat installation instructions.
Page 16 Table 9 — Electrical Data — CHS183-243 60 Hz Units COMPRESSOR WITHOUT POWERED CONVENIENCE OUTLET VOLTAGE NOMINAL RANGE No. 1 No. 2 OFM (ea) Power Supply Disconnect Size POWER UNIT Fuse or SUPPLY HACR (V-Ph-Hz) Brkr 208/230-3-60 26.8 25.0 67.8/67.8...
Page 17: Pre-Start-Up
PRE-START-UP CAUTION IMPORTANT: Before beginning Pre-Start-Up or Start- UNIT DAMAGE HAZARD Up, review Start-Up Checklist at the back of this book. Failure to follow this caution may result in equipment The Checklist assures proper start-up of a unit and pro- damage.
Page 18: Advanced Scroll Temperature Protection (Astp)
electrical power to the unit and check the circuit through the To manually reset ASTP, the compressor should be stopped overload with an ohmmeter or continuity tester. and allowed to cool. If the compressor is not stopped, the motor will run until the motor protector trips, which occurs up ADVANCED SCROLL TEMPERATURE PROTECTION to 90 minutes later.
Page 19 15 Ton Heat Pump Circuit A Charging Chart R-410A 15 Ton Heat Pump Circuit B Charging Chart R-410A Refrigerant Refrigerant Add Charge if Add Charge if Above the Curve Above the Curve Rem ove Charge if Rem ove Charge if Below the Curve Below the Curve 100 150 200 250 300 350 400 450 500 550 600...
Page 20: Operating Sequence
OPERATING SEQUENCE As space cooling load is satisfied, thermostat outputs Y3, Y2, and Y1 are sequentially de-energized, removing 24-v Base Unit Controls at CHS terminals X (Y3), Y2, and Y1. Compressor 1 loader plug is de-energized on Y3 opening. Circuit 2 INDOOR (SUPPLY) FAN compressor stops on Y2 opening;...
Page 21: Defrost Cycle
If either the Loss of Charge (LOC) Switch or High Pres- emergency heat is turned off, W2 is de-energized, and sure Switch (HPS) on either circuit opens while W1 re- supplemental heat is turned off. mains energized, then the compressor contactor C and COOLING AND HEATING SHUTDOWN relay SVR on the corresponding circuit are de-energized;...
Page 22: Routine System Maintenance
ROUTINE SYSTEM MAINTENANCE Table 10 — Outdoor Unit Maintenance Checklist These items should be part of a routine maintenance pro- RECOMMENDED MAINTENANCE CHECKLIST gram, to be checked every month or two, until a specific INTERVAL schedule for each can be identified for this installation: Outdoor unit specific: Monthly Annual...
Page 23: Servicing Systems On Roofs With Synthetic Materials
SERVICING SYSTEMS ON ROOFS WITH SYNTHETIC OFM1 MATERIALS POE (polyolester) compressor lubricants are known to OFM2 cause long term damage to some synthetic roofing materi- als. Exposure, even if immediately cleaned up, may cause OFM3 embrittlement (leading to cracking) to occur in one year or more.
Page 24: Outdoor Coil Metering Devices
OUTDOOR COIL METERING DEVICES Outdoor Coil The metering devices are multiple fixed-bore devices (Acutrol™) swaged into the horizontal outlet tubes from the Outdoor Coil liquid header, located at the entrance to each evaporator coil circuit path. These are non-adjustable. Service requires replacing the entire liquid header assembly.
Page 25: High Pressure Switch
The crankcase heater will operate as long as the power cir- protection switch, if additional protection is wanted. The cuit is energized. The main disconnect must be on to ener- freeze protection switch can be wired into the 24VAC con- gize the crankcase heater.
Page 26: Reversing Valve Control
REVERSING VALVE CONTROL The DFB has two outputs for unit reversing valve control. Operation of the reversing valves is based on internal logic; this application does not use an “O” or “B” signal to deter- mine reversing valve position. Reversing valves are ener- gized during the Cooling stages and de-energized during Heating cycles.
Page 27: Defrost Thermostats
DEFROST At the end of the unit defrost cycle, the unit will be returned to Heating cycle for a full continuous run period. If the space The defrost control mode is a time/temperature sequence. heating load is satisfied and compressor operation is termi- There are two time components: The continuous run period nated, the defrost control will remember where the run peri- and the test/defrost cycle period.
Page 28: Comfort Alert Diagnostic Module
Comfort Alert Diagnostic Module Power The Comfort Alert Diagnostic Module (CADM) monitors and (GRN) Comfort Alert ™ analyzes data from the Copeland Scroll three-phase com- Commercial Diagnostics POWER pressor and the thermostat demand. The CADM also pro- Green LED - 24VAC Power Yellow LED - Flash Code vides a 3-minute anti-recycle time delay to compressor System Pressure Trip...
Page 29 Table 14 — LED Status Codes STATUS LED STATUS LED STATUS LED DESCRIPTION TROUBLESHOOTING INFORMATION Green “POWER” Module has power Supply voltage is present at module terminals 1. Compressor protector is open 2. Condensing unit power disconnect is open 3. Compressor circuit breaker or fuse(s) is open Thermostat demand signal Y is present, but the Red “TRIP”...
Page 30: Outdoor Fans
Table 15 — CADM Troubleshooting MISWIRED MODULE INDICATION RECOMMENDED TROUBLESHOOTING ACTION Determine if both R and C module terminals are connected. Verify voltage in present at module’s R and C terminals. NOTE: The CADM requires a constant nominal 24VAC power supply. The wiring to the Green LED is not on, module does not power up module’s R and C terminals must be directly from the control transformer.
Page 31 Avoid the use of: • coil brighteners • acid cleaning prior to painting Rigid • high pressure washers Support • poor quality water for cleaning Cover Totaline environmentally sound coil cleaner is nonflamma- ble, hypoallergenic, non bacterial, and a USDA accepted biodegradable agent that will not harm the coil or surround- ing components such as electrical wiring, painted metal sur- faces, or insulation.
Page 32: Fastener Torque Values
FASTENER TORQUE VALUES 65-75 in.-lb Compressor mounting bolts (734-847 N-cm) 20 ±2 in.-lb Condenser fan motor mounting bolts (226 ±23 N-cm) 84 ±2 in.-lb Condenser fan hub setscrew (949 ±136 N-cm) 96 ±10 in.-lb High-flow service port (1085 ±23 N-cm) 2-3 in.-lb Schrader-type service check valve (23-34 N-cm)
Page 33: Troubleshooting
TROUBLESHOOTING PROBLEM CAUSE REMEDY Power failure. Call power company. Replace fuse or reset circuit breaker. Determine root Fuse blown or circuit breaker tripped. cause. Defective thermostat, contactor, transformer, control Replace component. relay, or capacitor. Insufficient line voltage. Determine cause and correct. Incorrect or faulty wiring.
Page 34: Appendix A - Air Conditioner And Heat Pump With R-410A - Quick Reference Guide
APPENDIX A — AIR CONDITIONER AND HEAT PUMP WITH R-410A — QUICK REFERENCE GUIDE • R-410A refrigerant operates at 50 percent to • POE oils absorb moisture rapidly. Do not expose oil 70 percent higher pressures than R-22. Be sure that to atmosphere.
Page 35 APPENDIX B — WIRING DIAGRAM LIST (CONT) Fig. A — CHS183 Power Schematic (208/230-3-60 shown) CHS-180-240-01SI Rev. A Specifications subject to change without notice.
Page 36 APPENDIX B — WIRING DIAGRAM LIST (CONT) Fig. B — CHS183 Power Schematic (460-3-60 shown) CHS-180-240-01SI Rev. A Specifications subject to change without notice.
Page 37 APPENDIX B — WIRING DIAGRAM LIST (CONT) Fig. C — CHS183 Power Schematic (575-3-60 shown) CHS-180-240-01SI Rev. A Specifications subject to change without notice.
Page 38 APPENDIX B — WIRING DIAGRAM LIST (CONT) Fig. D — CHS243 Power Schematic (208/230-3-60 shown) CHS-180-240-01SI Rev. A Specifications subject to change without notice.
Page 39 APPENDIX B — WIRING DIAGRAM LIST (CONT) Fig. E — CHS243 Power Schematic (460-3-60 shown) CHS-180-240-01SI Rev. A Specifications subject to change without notice.
Page 40 APPENDIX B — WIRING DIAGRAM LIST (CONT) Fig. F — CHS243 Power Schematic (575-3-60 shown) CHS-180-240-01SI Rev. A Specifications subject to change without notice.
Page 41 APPENDIX B — WIRING DIAGRAM LIST (CONT) Fig. G — CHS183-243 Control Schematic CHS-180-240-01SI Rev. A Specifications subject to change without notice.
Page 42: Appendix C - Low Ambient Option - Factory Installed
APPENDIX C — LOW AMBIENT OPTION — FACTORY INSTALLED Units with the factory installed low ambient option are Troubleshooting equipped with a low ambient head pressure control which regulates fan speed. Two temperature sensors, mounted on OBSERVATION POSSIBLE REMEDY circuits 1 and 2 of the outdoor coil (see Fig. H and I), control All fans: the speed of outdoor fan motors in order to maintain a con- Check power and wiring...
Page 43 APPENDIX C — LOW AMBIENT OPTION — FACTORY INSTALLED (CONT) Low Ambient Sensor 2 Low Ambient Sensor 2 must be positioned must be positioned on Vapor Stub on Vapor Stub (fourth from top) (fourth from top) Low Ambient Sensor 1 Low Ambient Sensor 1 must be positioned must be positioned...
Page 44 APPENDIX C — LOW AMBIENT OPTION — FACTORY INSTALLED (CONT) NOTE: Dimensions are in inches. Fig. J — Wind Baffles — Fabrication...
Page 45 APPENDIX C — LOW AMBIENT OPTION — FACTORY INSTALLED (CONT) NOTE: Dimensions are in inches. Fig. K — 15 Ton Wind Baffle Brackets — Fabrication...
Page 46 APPENDIX C — LOW AMBIENT OPTION — FACTORY INSTALLED (CONT) TOP BRACKETS FRONT BOTTOM BRACKET BACK LEFT RIGHT Fig. L — Wind Baffle Installation — 15 Ton Units...
Page 47 APPENDIX C — LOW AMBIENT OPTION — FACTORY INSTALLED (CONT) FRONT LEFT BACK RIGHT Fig. M — Wind Baffle Installation — 20 Ton Units CHS-180-240-01SI Rev. A Specifications subject to change without notice.
Page 50 © 2023 Carrier Lewisburg, TN 37091 USA Replaces: NEW CHS-180-240-01SI Rev. A Specifications are subject to change without notice.
Page 51: Start-Up Checklist
START-UP CHECKLIST FOR CHS183-243 HEAT PUMP CONDENSING UNIT (Remove and use for job file) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this Installation, Start-Up and Service Instruction document.
Page 52 ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ © 2023 Carrier Lewisburg, TN 37091 USA Replaces: NEW CHS-180-240-01SI Rev. A CL-2 Specifications are subject to change without notice. 2-23...

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