Carrier Performance 25HPA6 User Manual

25HPA6
Performancet Seri es 2---Stag e H e at Pump
with Puronr Refrigerant
2to5NominalTons
Installation Instruction
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS
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 fire extinguisher available. Read these instructions
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.
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.
Indoor Thermostat Control Options
Model
Infinity
Control
Standard
2 --- s t a g e
Thermostat
25HPA6 Yes Yes
!
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
and install a lockout tag. There may be more than 1
disconnect switch. Lock out and tag switch with a
suitable warning label.
!
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could result in personal injury
or equipment damage.
PuronR refrigerant systems operate at higher pressures than
standard R--22 systems. Do not use R--22 service equipment
or components on PuronR refrigerant equipment.

Carrier Performance 25HPA6 Specifications

General

Brand	Carrier
Model	Performance 25HPA6
Category	Heat Pump
Language	English

Summary

Safety Considerations

Installation Recommendations

Check Equipment and Job Site

Install on a Solid, Level Mounting Pad

Guidelines for securing the unit to a stable, level surface.

Clearance Requirements

Make Piping Connections

In Long-Line Applications, Install Liquid-Line Solenoid Valve (LSV)

Guidance on installing an LSV for specific long-line applications.

Refrigerant Tubing Connection Outdoor

Sweat Connections

Evacuate Refrigerant Tubing and Indoor Coil

Deep Vacuum Method

Detailed procedure for achieving a deep vacuum in the system.

Make Electrical Connections

Wiring Procedures

Route and Connect Ground and Power Wires

Guidelines for routing and connecting power and ground wires.

Connect Control Wiring

Instructions for connecting low-voltage control wires.

General Information and Final Wiring Check

System Start-Up

System Functions and Operation

System Functions And Sequence Of Operation

Explains how the system operates in different stages.

Compressor Operation

Defrost Control

Defrost Intervals and AUTO Defrost

How defrost intervals are set and adjusted automatically.

Defrost Hold and Forced Defrost

Procedures for holding or forcing defrost cycles.

Quiet Shift

Troubleshooting and System Checks

Systems Communication Failure

Model Plug

Check Charge

Procedures for checking and adjusting refrigerant charge.

Troubleshooting and Protection Features

Pressure Switch Protection

How the unit responds to high or low-pressure switch trips.

Control Fault and Brown-Out Protection

Diagnosing control faults and managing brown-out conditions.

230V Line Detection and Compressor Voltage Sensing

Contactor Shorted Detection and No 230V at Compressor Contactor

Troubleshooting Stages and Unloader Test

Verifying proper switching between stages and testing the unloader.

Temperature Sensors and Thermistors

Temperature Thermistors and Resistance Values

Thermistor Sensor Comparison

Failed Thermistor Default Operation

Status Codes and Troubleshooting Table

Final Checks

Puron (R-410A) Refrigerant Guide