Carrier 25HNA Infinity
Series User Manual

25HNA
Infinityt Series Heat Pump
with Puronr Refrigerant
2 To 5 Nominal Tons (Sizes 24 to 60)
Installation Instructions
the environmentally sound refrigerant
A05240
Fig. 1 − 25HNA6 / 25HNA9
NOTE: Read the entire instruction manual before starting the
installation.
Unless otherwise noted, information in these installation
instructions pertain to both 25HNA6 and 25HNA9 series units.
Information that is unique to the 25HNA6 series will be identified
as such; likewise information that is unique to the 25HNA9 series
will also be identified.
Indoor Thermostat Control Options
Model
Infinity
Control
Standard
2−stage
Thermostat
25HNA6 Yes Yes
25HNA9 Yes
No
(Emergency
Mode Only)
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 2. . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION RECOMMENDATIONS 2. . . . . . . . . . . . .
INSTALLATION 3 − 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 1 − Check Equipment & Job site 3. . . . . . . . . . . . . . .
Step 2 − Install on Solid Pad 3. . . . . . . . . . . . . . . . . . . . . .
Step 3 − Clearance Requirements 3. . . . . . . . . . . . . . . . . .
Step 4 − Operating Ambient 3. . . . . . . . . . . . . . . . . . . . . .
Step 5 − Elevate Unit 3 − 4. . . . . . . . . . . . . . . . . . . . . . . .
Step 6 − Install TXV 4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 7 − Install Liquid−Line Solenoid Valve (LSV) 5. . . .
Step 8 − Make Piping Connections 5 − 7. . . . . . . . . . . . . .
Step 9 − Make Electrical Connections 7 − 8. . . . . . . . . . . .
Step 10 − Compressor Crankcase Heater 8. . . . . . . . . . . . .
Step 11 − Install Accessories 8. . . . . . . . . . . . . . . . . . . . . .
Step 12 − Make Airflow Selections 8. . . . . . . . . . . . . . . . . .
Step 13 − Start−Up 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 14 − System Functions and Sequence of
Operation 9 − 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 15 − Check Charge 12 − 13. . . . . . . . . . . . . . . . . . . . .
MAJOR COMPONENTS 14. . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 14 − 19. . . . . . . . . . . . . . . . . . . . . . . .
FINAL CHECKS 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CARE AND MAINTENANCE 20. . . . . . . . . . . . . . . . . . . . . .
PURONR REFRIGERANT QUICK REF. GUIDE 20. . . . .

Carrier 25HNA Infinity
Series Specifications

General

Brand	Carrier
Model	25HNA Infinity Series
Category	Heat Pump
Language	English