SERVICING
55
Floor Joist or Roof Rafter
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
Tape or Wire Tie
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)
SECTION 3. OUTDOOR UNIT IS ABOVE THE INDOOR UNIT
Heat Pump ABOVE Indoor Coil
Maximum vertical
separation of 200 ft.
*Includes pressure losses of any elbows, bends, etc.
Maximum line set
equivalent length of 250 ft*.
The maximum line set
actual length is 200 ft.
1. Gas line must be sloped continuously towards the indoor unit.
2. The maximum elevation (vertical) difference between the outdoor unit and indoor unit is 200 feet.
3. The maximum line set equivalent length is 250 feet, which includes pressure losses of any elbow, bends, etc. The maximum
line set actual length is 200 feet.
4. Inverted suction loop is not required at either unit.
5. An accumulator is not required for outdoor unit (accumulators are factory installed ).
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