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If hanging line set from a joist or rafter,
use metal strapping
or heavy nylon wire tires
that are securely anchored.
T ape or Wire Tie
Final Charge Adjustment. All units must have refrigerant charge verified by proper adjustment of subcooling at the indoor
8.
unit after initial charge adjustment per Section 3. 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 refrig-
erant 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.
8'
Floor Joist or
Roof Rafter
Metal Sleeve
Strapping placed
around the suction line only
Installation of Refrigerant Piping (Horizontal)
TXV
REQUIRED ON INDOOR
FOR LONG LINE SET
APPLICATION
(around suction line only)
8'
After the suction line has been strapped to the joist or rafter at 8' intervals,
Figure 1-3.
12
Wire Tie
T ape or Wire Tie
Floor Joist or Roof Rafter
strap the liquid line to the suction line.
200' MAX
VERTICAL ELEVATION
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