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SECTION 2. Outdoor Unit is Above the Indoor Unit
Crankcase Heater (40 watts minimum)
Liquid Line Solenoid at Outdoor
Inverted Refrigerant Trap at Indoor
**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 2-1.)
* Liquid line solenoid not required if non-bleed TXV is used on the outdoor unit.
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 200 ft. for single stage heat pump (Figure
1.4).
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).
Accessory
Hard Start Assist
TXV (Indoor)
Oil Trap at Indoor
45°
Ell
Short Radius
Street Ell
Figure 2-1. Oil Trap
Heat Pump (HP)
(See manual for each product)
Yes**
Yes**
Long Radius Street Ell
45°
Street Ell
13
Yes
Yes
Yes
No
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