GSXH5 Installation Manual
7
inside of cap. Tighten cap nger-tight and then tighten
additional 1/6 of a turn (1 wrench at), or to the following
specication, to properly seat the sealing surfaces.
1. 3/8” valve to 5 - 10 in-lbs
2. 5/8” valve to 5 - 20 in-lbs
3. 3/4” valve to 5 - 20 in-lbs
4. 7/8” valve to 5 - 20 in-lbs
Do not introduce liquid refrigerant from the cylinder into
the crankcase of the compressor as this may damage the
compressor.
CAUTION
1. Break vacuum by fully opening liquid and suction
base valves.
2. Set thermostat to call for cooling. Check indoor and
outdoor fan operation and allow system to stabilize
for 10 minutes for xed orices and 20 minutes for
expansion valves.
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CAUTION
NOTICE
CAUTION
Airow and Total Static Pressure for the indoor unit should
be veried before attempting to charge system.
1. Total static pressure is .5” WC or less.
2. Airow is correct for installed unit.
3. Airow tables are in the installation manual and Spec
Sheet for Indoor Unit.
4. Complete charging information are in Service Manual
RS6200006.
The outdoor temperature must be 60°F or higher. Set the
room thermostat to COOL, fan switch to AUTO, and set the
temperature control well below room temperature.
Units matched with indoor coils equipped with a non-
adjustable TXV should be charged by Subcooling only.
Superheat on indoor coils with adjustable TXV valves are
factory set and no adjustment is normally required during
startup. Only in unique applications due to refrigerant
line length, dierences in height between the indoor
and outdoor unit and refrigerant tubing sizes or poor
performance should Superheat setting require adjustment.
These adjustments should only be performed by
qualied service personnel. For detailed charge and TXV
adjustments refer to the appropriate Service Manual.
CAUTION
1. Purge gauge lines. Connect service gauge manifold
to base-valve service ports. Run system at least 10
minutes to allow pressure to stabilize.
2. Temporarily install a thermometer 4-6” from
the compressor on the suction line. Ensure the
thermometer makes adequate contact and is insulated
for best possible readings. Use vapor temperature to
determine superheat.
3. Refer to the superheat table provided for proper
system superheat. Add charge to lower superheat or
recover charge to raise superheat.
4. Disconnect manifold set, installation is complete.