GSX14 Service Manual

SERVICING
164
SECTION 3. OUTDOOR UNIT IS ABOVE THE INDOOR UNIT
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 Yes** Yes**
**An oil trap at the indoor unit is required if the elevation difference exceeds 80'.
The trap can be constructed of standard refrigerant fitting (See Figure 3-1.)
1. Suction line must be sloped continuously towards the indoor unit.
2. The maximum elevation (vertical) difference between the outdoor unit and indoor unit is:
a. not restricted in this configuration for single stage air conditioning units (must adhere to
maximum equivalent length).
b. 80 feet for single stage heat pump units.
c. 25 feet for two stage units.
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).
Lon
g
Radius Street Ell
45°
Street Ell
Short Radius
Street Ell
45°
Ell
Figure 3-1. Oil Trap
SECTION 4. OUTDOOR UNIT IS BELOW THE INDOOR UNIT
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 Yes Yes
Inverted Refrigerant Trap at Indoor Yes Yes
Oil Trap at Indoor No No
1. The maximum elevation (vertical) difference between the outdoor unit and the indoor unit is 80 feet.
2. Suction line must be installed in a manner to prevent liquid migration to the outdoor unit from the
indoor unit (see following note 3).