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C5H3V, H5H3V, T5H3V
Variable Speed Heat Pumps
with R-454B Refrigerant
2 to 5 Nominal Tons
NOTE: Read the entire instruction manual before starting the installation.
Unit MUST be installed with rated R-454B indoor with factory approved dissipation control board installed.
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
VFD Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 1 - Check Equipment and Job Site . . . . . . . . . . . . . . . . . . . . . . . . 4
Unpack Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Inspect Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 2 - Install on a Solid, Level Mounting Pad . . . . . . . . . . . . . . . . . 4
Step 3 - Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 4 - Operating Ambient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 5 - Elevate Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 6 - Make Piping Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 1 - Refrigerant Connections and Recommended Liquid and Va-
por Tube Diameters (in.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
R-454B Indoor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Mechanical Line Set Connections . . . . . . . . . . . . . . . . . . . . . . . . 5
Install Liquid-Line Filter Drier - Indoor . . . . . . . . . . . . . . . . . . . . 6
Refrigerant Tubing Connection - Outdoor . . . . . . . . . . . . . . . . . . 6
No Installation of Adapter Tube . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Sweat Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pressure Test Tubing and Indoor Coil . . . . . . . . . . . . . . . . . . . . . 6
Evacuate Refrigerant Tubing and Indoor Coil . . . . . . . . . . . . . . . 6
Deep Vacuum Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Mandatory Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pressure Proof Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Leak Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Final Tubing Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 7 - Make Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . 7
Route Ground and Power Wires . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect Ground and Power Wires . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Final Wiring Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 8 - Compressor Stator Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 9 - Install Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 10 - Start-Up & Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 2 - Environment Type Guideline . . . . . . . . . . . . . . . . . . . . . . 9
Table 3 - Standard Subcooling Values. . . . . . . . . . . . . . . . . . . . . . . 9
Follow these steps to properly start up the system . . . . . . . . . . . . 9
Table 4 - Required Liquid Line Temperature for R-454B . . . . . . . 11
Check Charge - Cooling / Heating . . . . . . . . . . . . . . . . . . . . . . . 12
Post Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 5 - Minimum Room Area Charging Table. . . . . . . . . . . . . . 13
Step 11 - Pump Down & Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . 13
Evacuation and Recovery of Refrigerant from within . . . . . . . . 14
Step 12 - System Functions and Major Components . . . . . . . . . . . . . 15
Primary Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Utility Interface With Ion™ Black . . . . . . . . . . . . . . . . . . . . . . 16
Ion™, Green Communications (COMM) Light . . . . . . . . . . . . . 16
Installation Instructions
PAGE NO.
Amber Status Light. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5x7 LED Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
VFD Communications Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Variable Frequency Drive (VFD). . . . . . . . . . . . . . . . . . . . . . . . 17
Table 6 - VFD LED Indicator Functions . . . . . . . . . . . . . . . . . . . . 17
Input Filter Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Reactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Variable Speed Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Time Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Heating Electronic Expansion Valve (EXV-H) . . . . . . . . . . . . . 18
Vapor Injection Electronic Expansion Valve (EXV-VI) . . . . . . 18
Variable Speed Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Pressure Equalization Valve (PEV) . . . . . . . . . . . . . . . . . . . . . . 18
High Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Outdoor Pressure Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Stator Heater Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Ion™ Controlled Low Ambient Cooling . . . . . . . . . . . . . . . . . . 18
Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Systems Communication Failure . . . . . . . . . . . . . . . . . . . . . . . . 19
Model Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 7 - Model Plug Information . . . . . . . . . . . . . . . . . . . . . . . . . 19
Pressure Switch Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Compressor Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Line Voltage Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Forced Defrost Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Temperature Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 8 - 10K Thermistor Resistance Values . . . . . . . . . . . . . . . . 19
Table 9 - 50K Thermistor Resistance Values . . . . . . . . . . . . . . . . 19
Outdoor Air Temperature (OAT) . . . . . . . . . . . . . . . . . . . . . . . . 19
Outdoor Coil Temperature (OCT-HP) . . . . . . . . . . . . . . . . . . . . 20
Liquid Line Temperature (LLT-HP) . . . . . . . . . . . . . . . . . . . . . 20
Outdoor Suction Temperature (OST) . . . . . . . . . . . . . . . . . . . . . 20
Outdoor Discharge Line Temperature (ODT) . . . . . . . . . . . . . . 20
Failed Thermistor Default Operation . . . . . . . . . . . . . . . . . . . . . 21
Variable Speed Compressor Winding Resistance . . . . . . . . . . . 21
Table 10 - Variable Speed Compressor Resistances
winding resistance at 68°F (20°F) . . . . . . . . . . . . . . . . . . . . . . . . . 21
Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Status Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Status Code Recall Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 11 - Diagnostic Code Table . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 12 - Malfunction Lockout Durations . . . . . . . . . . . . . . . . . . 23
FINAL CHECKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
REPAIRING REFRIGERANT CIRCUIT. . . . . . . . . . . . . . . . . . . 24
CARE AND MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
R-454B Refrigerant - Quick Reference Guide. . . . . . . . . . . . . . . . . 25
PAGE NO.
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Summary of Contents for Carrier C5H3V
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Page 1: Table Of Contents
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps with R-454B Refrigerant 2 to 5 Nominal Tons Installation Instructions NOTE: Read the entire instruction manual before starting the installation. Unit MUST be installed with rated R-454B indoor with factory approved dissipation control board installed. -
Page 2: Safety Considerations
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions SAFETY CONSIDERATIONS WARNING This appliance shall only be installed by EPA qualified personnel and have Section 608 Technician Certification. This appliance is not ELECTRICAL SHOCK HAZARD intended for use by persons (including children) with reduced physical, Failure to follow this warning could result in personal injury or death. -
Page 3: General
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions General CAUTION Acronyms used in this publication Acronym EQUIPMENT DAMAGE HAZARD Primary Control Module Failure to follow this caution may result in equipment damage. Variable Frequency Drive If proper lineset routing techniques are not followed, variable speed... -
Page 4: Step 1 - Check Equipment And Job Site
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Step 1 – Check Equipment and Job Site CAUTION Unpack Unit Move to final location. Remove carton taking care not to damage unit. UNIT OPERATION HAZARD Inspect Equipment Failure to follow this caution may result in equipment damage or File claim with shipping company prior to installation if shipment is improper operation. -
Page 5: Step 6 - Make Piping Connections
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Step 6 – Make Piping Connections CAUTION WARNING UNIT DAMAGE HAZARD PERSONAL INJURY AND ENVIRONMENTAL Failure to follow this caution may result in equipment damage or improper operation. HAZARD If ANY refrigerant tubing is buried, provide a 6 in. (152.4 mm) vertical Failure to follow this warning could result in personal injury or death. -
Page 6: Install Liquid-Line Filter Drier - Indoor
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Install Liquid-Line Filter Drier - Indoor Sweat Connections Refer to Fig. 4 and install filter drier as follows: on 36 and 48 size CAUTION models 1. Braze 5-in. (127 mm) liquid tube to the indoor coil. -
Page 7: Deep Vacuum Method
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Step 7 – Make Electrical Connections Refrigerant tubes and indoor coil should be evacuated using the recommended deep vacuum method of 500 microns. The alternate triple Be sure field wiring complies with local and national fire, safety, and evacuation method may be used. -
Page 8: General Information
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions General Information Step 10 – Start-Up & Charging Use No. 18 AWG or larger color-coded, insulated (35°C minimum) wire CAUTION for low voltage control wires. All wiring must be NEC Class 2 and must be separated from incoming power leads. -
Page 9: Setup For Furnace Or Fcm Fan Coil (Communicating)
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Table 2 – Environment Type Guideline Average Annual Relative Humidity (%) Type <45 Arid 45 - 65 Semi-Arid Humid NOTE: Ion™ Black System Control indicates acceptable conditions for subcool charging mode. Do not use subcooling charge method if outside 65°F (18°C) and 105°F(40.6°C) outdoor temperature. - Page 10 C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions A240344 Fig. 11 – Equipment Summary Screen A240370 Fig. 14 – Refrigerant Charge Mode Selection NOTE: A leak dissipation board must be present for the Ion™ Black 7. If indoor and outdoor conditions are in range, subcooling status will System Control to allow unit operation.
- Page 11 C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions 8. The next screen, “cooling charge mode start” is shown in Fig. 17 subcooling is high. Tolerance should be ±1°F. It is recommended to Fig. 18 depending on whether subcooling charging is available. The...
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Page 12: Check Charge - Cooling / Heating
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Check Charge - Cooling / Heating The check charge work flow allows a user to operate the system at fixed, charge mode operating parameters in either heating or cooling modes. In cooling this can be used to evaluate subcooling using the sensors on the unit. -
Page 13: Post Charging
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Step 11 – Pump Down & Evacuation Because this system has a VFD controlled compressor the conventional procedure cannot be used to “pump down” and isolate the refrigerant into the outdoor unit. The Ion™ Black System Control has provisions to assist in performing this function. -
Page 14: Evacuation And Recovery Of Refrigerant From Within
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions A20042 Fig. 27 – Evacuation Setup Screen A240390 Fig. 25 – Pump Down Setup Screen A20043 A240342 Fig. 28 – Evacuation Status Screen Fig. 26 – Pump Down Active Screen Evacuation and Recovery of Refrigerant from within... -
Page 15: Step 12 - System Functions And Major Components
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Step 12 – System Functions and Major Components Primary Control Module The Primary Control Module (PCM) controls the various functions of variable speed models utilize a communicating Ion™ Black System Control. When a demand for cooling or heating exists, the Ion™... -
Page 16: Utility Interface With Ion™ Black
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Utility Interface With Ion™ Black display “Curtailment Active”. See Ion™ Black System Control installation instructions for setup details. The utility curtailment relay should be wired between the two UTIL Ion™, Green Communications (COMM) Light connections on the control board for this Ion™... -
Page 17: Amber Status Light
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Amber Status Light flash green when good messages are received from the VFD and red when bad or no messages are received from the VFD. The operation modes and meaning for each mode of the status light is Variable Frequency Drive (VFD) described in the table below for PCM SW versions 1.0 and above. -
Page 18: Input Filter Board
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Pressure Equalization Valve (PEV) WARNING The PEV is located at the discharge of the compressor and the inlet to the accumulator. The purpose of the PEV is to prevent the compressor from... -
Page 19: Troubleshooting
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Troubleshooting allowable and, in the worst case, will power off the compressor to avoid excursions outside the boundaries. If a shutdown does occur then the Systems Communication Failure PCM will set a diagnostic code per Table If communication with the Ion™... -
Page 20: Outdoor Coil Temperature (Oct-Hp)
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Liquid Line Temperature (LLT-HP) The LLT-HP is a 10K thermistor used for multiple system operations. LLT-HP is connected to the PCM through a separate 3-pin connector and provides to the primary control module and Ion™ Black System Control. -
Page 21: Failed Thermistor Default Operation
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Failed Thermistor Default Operation Status Codes Factory defaults have been provided in the event of failure of any of the Table 11 shows the status codes flashed by the amber status light. Most system problems can be diagnosed by reading the status code as flashed thermistors. - Page 22 C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Table 11 – Diagnostic Code Table Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
- Page 23 C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Table 12 – Malfunction Lockout Durations (Continued) Table 12 – Malfunction Lockout Durations Code Title Time Code Title Time 61-41 Reversing Valve Solenoid Open Duration of Event 13-53 System Control Upgrade Required...
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Page 24: Final Checks
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions FINAL CHECKS CARE AND MAINTENANCE IMPORTANT: Before leaving job, be sure to do the following: For continuing high performance and to minimize possible equipment failure, periodic maintenance must be performed on this equipment. -
Page 25: R-454B Refrigerant - Quick Reference Guide
C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions R-454B Refrigerant — Quick Reference Guide • Be sure that servicing equipment and replacement components are designed to operate with R-454B refrigerant. • Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT 4BW400. - Page 26 C5H3V, H5H3V, T5H3V Variable Speed Heat Pumps: Installation Instructions Edition Date: 08/24 ©2024 Carrier Corp. All rights reserved. Catalog No:CHT5H3V-01SI A Proud Member of the Carrier Family Replaces: New Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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