Table of Contents
Advertisement
25HPA
Performancet Series Heat Pump
with Puronr Refrigerant
Sizes 18 to 60
1--1/2 to 5 Nominal Tons
Installation Instructions
Fig. 1 --- 25HPA
Step 2 - - Install on Solid Pad
Step 11 - - Check Defrost Thermistor and OAT Thermistor
HP SYSTEM FUNCTIONS AND SEQUENCE OF
A05341
PURONR REFRIGERANT QUICK REF. GUIDE
TABLE OF CONTENTS
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .
. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
PAGE
2
. . . . . . . . . . . . .
2
3 - - 10, 17
3
3
3
3
3
3 - - 4
5 - - 7
7 - - 8
. . . . . . . . . . . . .
8
. . . . . . . . . . . . . .
8
8
9
10, 17
. . . . . . . . . . .
11
11 - - 14
15 - - 16
18
18
. . . . .
18
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Carrier 25HPA Performance Series
Summary of Contents for Carrier 25HPA Performance Series
-
Page 1: Table Of Contents
25HPA Performancet Series Heat Pump with Puronr Refrigerant Sizes 18 to 60 1--1/2 to 5 Nominal Tons Installation Instructions TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS ..... . . INSTALLATION RECOMMENDATIONS . -
Page 2: Safety Considerations
SAFETY CONSIDERATIONS INSTALLATION RECOMMENDATIONS Improper installation, adjustment, alteration, service, NOTE: In some cases noise in the living area has been traced to maintenance, or use can cause explosion, fire, electrical shock, or gas pulsations from improper installation of equipment. other conditions which may cause death, personal injury, or 1. -
Page 3: Installation
INSTALLATION On rooftop applications, locate unit at least 6 in. above roof surface. STEP 1 —Check Equipment and Job Site STEP 4 —Operating Ambient Unpack Unit The minimum outdoor operating ambient in cooling mode is Move to final location. Remove carton taking care not to damage 55°F, and the maximum outdoor operating ambient in cooling unit. -
Page 4: Step 6 - - Install Txv
Installing TXV in Place of Piston Replacing TXV on R- -22 Indoor Coil 1. Pump system down to 2 psig and recover refrigerant. 1. Pump system down to 2 psig and recover refrigerant. 2. Remove hex nut from piston body. Use backup wrench on 2. -
Page 5: Step 7 -Make Piping Connections
STEP 7 —Make Piping Connections CAUTION WARNING UNIT DAMAGE HAZARD PERSONAL INJURY AND ENVIRONMENTAL Failure to follow this caution may result in equipment HAZARD damage or improper operation. Failure to follow this warning could result in personal To prevent damage to unit or service valves, observe the injury or death. - Page 6 Outdoor Unit Connected to Factory Approved Indoor Unit Install Liquid Line Filter Drier Indoor These outdoor units are carefully evaluated and listed with Refer to Fig. 6 and install filter drier as follows: specific indoor coils for proper system performance. 1.
-
Page 7: Step 8 -Make Electrical Connections
Deep Vacuum Method Final Tubing Check The deep vacuum method requires a vacuum pump capable of IMPORTANT: Check to be certain factory tubing on both pulling a vacuum of 500 microns and a vacuum gage capable of indoor and outdoor unit has not shifted during shipment. Ensure accurately measuring this vacuum depth. -
Page 8: Step 9 -Compressor Crankcase Heater
STEP 11 —Check OAT Thermistor and OCT Thermistor Connect Ground and Power Wires Attachments Connect ground wire to ground connection in control box for safety. Connect power wiring to contactor as shown in Fig. 9. Outdoor Air Temperature (OAT) Thermistor is factory installed by inserting the nibs on either sides of the thermistor body DISCONNECT through a keyhole in the bottom shelf of the control box and... -
Page 9: Step 12 -Start- -Up
STEP 12 —Start- -Up Follow these steps to properly start up system: 1. After system is evacuated, fully open liquid and vapor CAUTION service valves. 2. Unit is shipped with valve stem(s) closed and caps UNIT OPERATION AND SAFETY HAZARD installed. -
Page 10: Step 13 -Check Charge
STEP 13 —Check Charge Heating Check Chart Procedure Factory charge and charging methods are shown on unit rating To check system operation during heating cycle, refer to the plate. To check charge in cooling mode, refer to Cooling Only Heating Check Chart on outdoor unit. This chart indicates Procedure. -
Page 11: General Sequence Of Operation
GENERAL SEQUENCE OF OPERATION HEAT PUMP SYSTEM FUNCTIONS STANDARD THERMOSTAT AND SEQUENCE OF OPERATION Turn on power to indoor and outdoor units. Transformer is The outdoor unit control system has special functions. The energized with power supplied. following is an overview of the control functions. Cooling SEQUENCE OF OPERATION O n a c a l l f o r c o o l i n g , a s t a n d a r d t h e r m o s t a t... - Page 12 Outdoor Coil Temp (OCT) Outdoor Air Temp (OAT) COMM STATUS A05332 Fig. 14 --- Control Board Time Delays Utility Interface The unit time delays include: With Infinity Control The input labeled UTIL is active only when a communicating Five minute time delay to start cooling or heating Infinity Control is used.
- Page 13 Low Ambient Cooling DEFROST When this unit is operating below 55ºF outdoor temperature, This control offers 4 possible defrost interval times: 30, 60, 90 or provisions must be made for low ambient operation. 120 minutes. These are selected by dip switches on the unit control board, or in the Infinity control (if used).
- Page 14 QUIET SHIFT MAJOR COMPONENTS Control Board This feature must be enabled by selecting the 3rd position of the 3- -position dip switch for a non- -communicating system or The Heat Pump control board controls the following functions: enabling it at the User Interface in an Infinity communicating Compressor contactor operation system.
-
Page 15: Troubleshooting
TROUBLESHOOTING Contactor Shorted Detection Systems Communication Failure If there is compressor voltage sensed when there is no demand for compressor operation, the contactor may be stuck closed. The If communication between User Interface (UI), and condensing control will flash the appropriate fault code. Check the contactor unit is lost, the outdoor control will flash the appropriate fault and control box wiring. - Page 16 Status Codes is 1.0 second ON. Time between flashes is 0.25 second. Time between short flash and first long flash is 1.0 second. Time Table 3 shows the status codes flashed by the amber status light. between code repeating is 2.5 seconds with LED OFF. Most system problems can be diagnosed by reading the status code as flashed by the amber status light on the control board.
- Page 17 THERMISTOR CURVE TEMPERATURE (DEG. F) A91431 Fig. 16 --- Resistance vs. Temperature Chart Table 4—Required Liquid ---Line Temperature Liquid Liquid Pressure Pressure Required Subcooling Temperature Required Subcooling Temperature °F) °F) at Service at Service Valve Valve (PSIG) (PSIG)
-
Page 18: Final Checks
Catalog No: 25HPA- - 2SI Printed in U.S.A. Edition Date: 03/06 Copyright 2006 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Replaces: 25HPA- -1SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Need help?
Do you have a question about the 25HPA Performance Series and is the answer not in the manual?
Questions and answers
What is the HSPF for Carrier model 25HPA560A300