Carrier KSAHI0101HPS Installation Instruction

High-Pressure
Switch Kit
NOTE: Read the entire instruction before starting the installation.
These instructions cover installation of High-Pressure Switch Kit KSAHI0101HPS on split-system air conditioners and KSAHI0201HPS on heat
pumps.
The High-Pressure Switch Kit includes the following items:
High-press switch
Adapter Tee
Flare gasket
Extender tube
Wirenut
Wiring label
Installation Instructions
Installing and servicing air conditioning equipment can be hazardous due to system pressure and electrical components. Only trained personnel
should install or service air conditioning equipment.
Untrained personnel can perform basic maintenance functions, such as cleaning coils and cleaning and replacing filters. All other operations should
be performed by trained service personnel. When working on air conditioning equipment, observe precautions in the literature, and on tags and
labels attached to the unit.
Follow all safety codes. Wear safety glasses and work gloves. Use a quenching cloth for brazing operations. Have a fire extinguisher available.
WARNING: Before beginning any modification be sure main electrical disconnect switch is in the OFF position. TAG
DISCONNECT SWITCH WITH A SUITABLE WARNING LABEL. Electrical shock can cause personal injury or death.
PROCEDURE 1—HIGH-PRESSURE SWITCH CONNECTION
NOTE: The liquid- and vapor-service valves are located outside of the unit at the rear. The smaller valve is the liquid-service valve; the larger
valve is the vapor-service valve.
CAUTION: When making flare connections, use one of the flare gaskets provided in the kit to insure a leaktight
refrigerant connection. Use a backup wrench to avoid breaking connection or splitting flare.
Refer to Fig. 1 and proceed as follows to install the high- pressure switch.
NOTE: Make sure the service valve is in the fully back seated (counterclockwise) position before installation.
1. Remove top knockout in service panel next to service valves.
2. Remove valve core from one end of adapter tee provided in kit.
3. Carefully uncoil extender tube—tube must not be kinked. Securely connect extender tube flare nut to side of adapter tee without valve core.
4. Route extender tube completely through knockout so that tee can be attached to vapor-service valve later.
5. Securely connect pressure switch flare nut, using flare gasket, to male flare fitting on extender tube inside unit.
6. Remove seal cap from service fitting on liquid-service valve and securely connect to remaining male flare fitting on adapter tee.
7. Securely connect flare nut on adapter tee, using flare gasket, to service fitting on liquid-service valve.
8. Remove liquid-service valve stem cap and open valve 3/4 turn.
9. Replace liquid-service valve stem cap fingertight and further tighten cap 1/6 turn.
10. Check all refrigerant connections for leaks and repair if necessary.
11. Proceed to Procedure 2 or 3 to make electrical connections.
Form: AG-SAHI-01
Installation Instruction
INTRODUCTION
SAFETY CONSIDERATIONS
INSTALLATION
Cancels: New Printed in U.S.A.
KSAHI0101HPS
KSAHI0201HPS
9/91 Catalog No. 92-33SA-HI0
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