Carrier Performance 27TPA8 Installation Instructions Manual
Carrier Performance 27TPA8 Installation Instructions Manual

Carrier Performance 27TPA8 Installation Instructions Manual

2-stage heat pump with puron advance (r-454b) refrigerant and intelisense technology 2 - 5 tons

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27TPA8
Performance™ Series 2-Stage Heat Pump
with Puron Advance™ (R-454B) Refrigerant
and InteliSense™ Technology
2 - 5 Tons
NOTE: For use with R-454B indoor units only. Read the entire instruction manual before starting the installation.

Table of Contents

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Check Equipment and Job Site . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Install on a Solid, Level Mounting Pad . . . . . . . . . . . . . . . . . . . . . 2
Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operating Ambient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Check Defrost Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Elevate Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Make Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
MANDATORY PIPING REQUIREMENTS. . . . . . . . . . . . . . . . . . . 6
Make Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Compressor Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Install Electrical Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Airflow Selections (ECM Furnaces) . . . . . . . . . . . . . . . . . . . . . . . 8
(non-communicating). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
(non-communicating). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Check Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Final Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
MAJOR COMPONENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Repairing Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
TRAINING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Installation Instructions

SAFETY CONSIDERATIONS

The following considerations are critical to upholding safety during
installation:
IMPORTANT: This appliance shall only be installed by EPA qualified
personnel having appropriate certification. This appliance is not
intended for use by persons (including children) with reduced physical,
sensory or mental capabilities or lack of experience and knowledge,
unless they have been given supervision or instruction concerning use of
the appliance by a person responsible for their safety.
Improper installation, adjustment, alteration, service, maintenance, or
use can cause explosion, fire, electrical shock, or other conditions which
may cause death, personal injury, or property damage. Consult a
qualified installer, service agency, or your distributor or branch for
information or assistance. The qualified installer or agency must use
factory-authorized kits or accessories when modifying this product.
Refer to the individual instructions packaged with the kits or accessories
when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and
work gloves. Use quenching cloth for brazing operations. Have a dry
powder or CO
fire extinguisher available. Read these instructions
2
thoroughly and follow all warnings or cautions included in literature and
attached to the unit. Consult local building codes and current editions of
the National Electrical Code (NEC) NFPA 70. In Canada, refer to
current editions of the Canadian Electrical Code CSA 22.1.
Proper tools should be used that are designed for the refrigerant of the
unit being installed. For A2L refrigerants, non-sparking tools are
required. A refrigerant detector should be used prior to and during the
installation process to check for leaks. Open flames or other ignition
sources should not be present except during brazing. Brazing should
only take place on refrigerant tubes open to the atmosphere or have been
properly evacuated.
Recognize safety information. This is the safety-alert symbol
you see this symbol on the unit and in instructions or manuals, be alert to
the potential for personal injury.
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 would 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.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing system, main electrical
disconnect switch must be in the OFF position. There may be more than
1 disconnect switch. Lock out and tag switch with a suitable warning
label.
When
Understand these signal words;

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Summary of Contents for Carrier Performance 27TPA8

  • Page 1: Table Of Contents

    27TPA8 Performance™ Series 2-Stage Heat Pump with Puron Advance™ (R-454B) Refrigerant and InteliSense™ Technology 2 - 5 Tons Installation Instructions NOTE: For use with R-454B indoor units only. Read the entire instruction manual before starting the installation. Table of Contents SAFETY CONSIDERATIONS SAFETY CONSIDERATIONS .
  • Page 2: General

    27TPA8: Installation Instructions WARNING EXPLOSION HAZARD Failure to follow this warning could result in death, serious personal injury, death, and/or property damage. Never use air or any gas containing oxygen for leak testing operating refrigerant compressors. Never allow compressor suction pressure to operate in a vacuum with service valves closed.
  • Page 3: Clearance Requirements

    27TPA8: Installation Instructions Check Defrost Thermostat On rooftop applications, mount on level platform or frame. Place unit above a load-bearing wall and isolate unit and tubing set from structure. Check defrost thermostat to ensure it is properly located and securely Arrange supporting members to adequately support unit and minimize attached.
  • Page 4: Make Piping Connections

    27TPA8: Installation Instructions Table 1 – Accessory Usage Required for Low Ambient Required for Sea Coast Required for Long Line Accessory Cooling Applications Applications Applications (Below 55°F / 12.8°C) (within 2 miles/3.2 km) Compressor Start Assist Capacitor and Relay Crankcase Heater Yes (standard) Yes (standard) Evaporator Freeze Thermostat...
  • Page 5: Fire Hazard

    27TPA8: Installation Instructions For Vapor Service Valve - remove valve core from schrader port on Service Valve BEFORE brazing. This helps prevent overheating and damage to valve seals (refer to Fig. 5). Replace valve core when brazing is completed. A14235 Fig.
  • Page 6: Mandatory Piping Requirements

    27TPA8: Installation Instructions MANDATORY PIPING REQUIREMENTS Evacuate Refrigerant Tubing and Indoor Coil Pressure Proof Check CAUTION Refrigerant tubes and indoor coil should be pressure tested with an inert gas such as nitrogen. Pressurize the system with the inert gas to the Low UNIT DAMAGE HAZARD Side Test Pressure listed on the outdoor unit rating plate.
  • Page 7: Connect Control Wiring

    27TPA8: Installation Instructions Connect Control Wiring All wiring must be NEC Class 2 and must be separated from incoming power leads. Route 24v control wires through control wiring grommet and connect Use furnace transformer, fan coil transformer, or accessory transformer leads to control wiring.
  • Page 8: Compressor Crankcase Heater

    InteliSense™ technology allows for the collection of performance data to be sent to the cloud. Utilizing Carrier’s digital tools, dealers can gather charging. system settings and equipment data, with homeowner opt-in, to provide NOTE: HP units with InteliSense™...
  • Page 9: Sequence Of Operation

    27TPA8: Installation Instructions When the cycle is complete, Y1 is turned off, stopping the compressor CAUTION and outdoor fan. The 5 minute time guard begins counting. Compressor will not come on until this delay expires. In the event of a power interruption, the time guard will not allow another cycle for 5 minutes.
  • Page 10: Check Charge

    27TPA8: Installation Instructions Defrost Speedup plus any added charge. Verify that the indoor space served by the indoor unit, including spaces connected by ductwork, exceed the minimum To initiate a forced defrost, speedup pins (J1) must be shorted with a flat room size as listed on the outdoor unit charging label.
  • Page 11: Unloader Test Procedure

    27TPA8: Installation Instructions Table 5 – Required Liquid Line Temperature R-454B Required Subcooling Temperature (°F) Liquid (PSIG) Pressure at Service Valve Final Checks Verify units for proper switching between low & high stages IMPORTANT: Before leaving job, be sure to do the following: Check the suction pressures at the service valves.
  • Page 12: Troubleshooting

    Access My Learning Center with your HVACpartners credentials at www.mlctraining.com. Please contact us a mylearning@carrier.com with questions. © 2024 Carrier. All rights reserved. Edition Date: 10/24 Catalog No: 27TPA8-01SI Replaces:New Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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