Gree VIR09HP115V1A Installation Manual page 16

PIPING INSTALLATION
Refrigerant Piping
C UTION
Use refrigeration grade piping ONLY. Uses of other piping will void the Manufacturer's Warranty.
Piping Preparation:
1. Do not open service valves or remove protective caps on pipes until all connections are made.
2. Keep tubing free of dirt, sand, moisture and contaminants.
3. Insulate each refrigerant pipe and condensate hose with minimum 3/8" (10 mm) wall
thermal pipe insulation.
4. Bind refrigerant pipes, the condensate hose and interconnecting cable together with
cable ties at 12-inch intervals.
Piping Connections to Indoor Unit:
NOTE: For maximum serviceability, it is recommended to have refrigerant piping and
drain connections on the outside.
1. Feed refrigerant pipes, drain hose and interconnecting wires assembly
through wall hole from outdoor to the indoor unit.
2. Adjust the length and carefully bend refrigerant pipes to meet indoor
unit refrigerant pipe connections with proper tools to avoid kinks.
3. Apply a small amount of refrigerant oil to the flare connection on
the refrigerant pipes.
Pipe Diameter
inch (mm)
1/4 (6.35)
3/8 (9.5)
1/2 (12.7)
5/8 (15.9)
Torque Table
Nut Size
inch (mm)
1/4 (17)
3/8 (22)
1/2 (25)
5/8 (29)
Tightening Torque
ft-lbs
10 to 13
25 to 30
36 to 45
50 to 60
N-m
14 to 18
34 to 42
49 to 61
68 to 82
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