
58
Aeroquip Connection
1. Lubricate male half diaphragm and synthetic
rubber seal with refrigerant oil.
2. Thread male coupling to its proper female half by
hand to ensure proper mating of threads.
3. Use proper wrenches (on coupling body hex and
its union nut) and tighten union nut until coupling
bodies “bottom”.
NOTE: You must use a wrench on the body to keep
the body from turning while tightening the nut with the
second wrench. If the body turns excessively, the
piercing seal will be damaged.
4. Use proper wrenches to tighten an additional 1/4
turn (90°). This final 1/4 turn is necessary to
ensure the formation of a leak proof joint.
Alternately, use a torque wrench to tighten the
1/2" coupling to 40 ft-lbs and 3/8" fitting to
11 ft-lbs.
5. Leak check all your connections. If you detect any
leaks, repair and recheck.
Condenser and Pre-charged Lines
Installation
Before proceeding with installation, verify that all
requirements for roof mounted remote condenser units
(if applicable) have been satisfied. If unit has a remote
condenser, refer to the instructions on installing the
remote condenser supplied with the condensing unit
and refer to the section on installation of remote
refrigeration line sets.
Important
If you are installing a remote unit, there is a
refrigeration king valve located behind the
compressor. This valve must be back seated
prior to starting the compressor. Failure to do so
will short cycle and may damage the compressor.
STH13_Tech.book Page 58 Wednesday, September 15, 2010 3:20 PM