GSX14 Service Manual

SERVICING
163
Floor Joist or Roof Rafter
A
fter the suction line has been strapped to the joist or rafter at 8’ intervals,
strap the liquid line to the suction line.
8’
Metal Sleeve
Wire Tie
(around suction line only)
Floor Joist or
Roof Rafter
Ta p e o r W i r e T i e
Ta p e o r W i r e T i e
8’
If hanging line set from a joist or rafter,
use metal strapping
or heavy nylon wire tires
that are securely anchored.
Strapping placed
around the suction line only
Figure 1-3. Installation of Refrigerant Piping (Horizontal)
11. Heat Pump Application Only. Liquid line solenoid must be installed less than 2 feet from the outdoor unit following
the solenoid supplier information for installation.
12. Heat Pump Application Only. Heating piston change (in the outdoor unit) is not required.
13. Final Charge Adjustment. All units must have refrigerant charge verified by proper adjustment of subcooling at the
indoor unit after initial charge adjustment per Section 5. Proper adjustment means pressure and temperature of the liquid
line at the indoor unit must be measured to calculate subcooling at the indoor unit. If subcooling at the indoor unit is
less than 5°F, then additional refrigerant must be added until this subcooling level is achieved. If subcooling at the indoor
unit is more than 7°F, then refrigerant must be removed until this subcooling level is achieved.
SECTION 2. OUTDOOR UNIT AND INDOOR UNIT ARE AT THE SAME ELEVATION
Accessory Air Conditioner (AC) Heat Pump (HP)
Crankcase Heater
(40 watts minimum)
Yes Yes
Hard Start Assist
Yes
(See manual for each product)
Yes
(See manual for each product)
TXV (Indoor) Yes Yes
Liquid Line Solenoid at Outdoor No Yes
Inverted Refrigerant Trap at Indoor No No
Oil Trap at Indoor No No
1. In a completely horizontal installation with a long line set where the indoor unit is at the same altitude as (or slightly
below) the outdoor unit, the line set should be sloped continuously towards the indoor unit. This helps reduce
refrigerant migration to the outdoor unit during a system’s off-cycle.
2. The maximum elevation (vertical) difference for this section to be applicable is 10 feet separation between outdoor
unit and indoor unit. If outdoor unit is more than 10 feet above indoor unit use Section 3. If outdoor unit is more than
10 feet below indoor unit use Section 4.
3. Inverted suction loop is not required at either unit.
4. An accumulator is not required for air conditioners (accumulators are factory installed on heat pumps).
5. An oil trap at the indoor unit is not required.