31
Refrigerant Piping Connections
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REFRIGERANT PIPING CONNECTIONS
Directional Pipe Formation
Drain hose
Vinyl tape(narrow)
Pipe
Wrap with
vinyl tape(wide)
Bundling Piping
Pipe Bundling
See Figure 31 for proper pipe and cable bundling. Note the placement
of the piping along with the necessary insulation material.
1. Be sure to wrap each pipe with proper insulation material.
2. Secure the piping by wrapping vinyl tape around the pipe. Use the
narrow size tape for wrapping the actual pipe.
3. You can include the drain hose in the bundled piping and wrap all of
them together using the wider vinyl tape as shown in Figure 32. The
end of the drain hose outlet must be routed above ground.
Indoor Unit Installed Above Outdoor Unit
1. Refer to Figure 33 while following the procedures below.
2. Tape the piping, drain hose and connecting cable from down to up.
3. Secure the taped piping along the exterior wall using pipe
clamps.
4. Create trap above the electrical connections cover to prevent water
penetrating electrical components and wiring.
Indoor Unit Installed Below Outdoor Unit
1. Refer to Figure 34 while following the procedures below.
2. Tape the piping, drain hose and connection cable from down to up.
3. Secure the taped piping along the exterior wall using pipe
clamps.
4. Create trap above the electrical connections cover to prevent water
entering the room.
Figure 31: Cutaway of Proper Pipe and Cable Bundling
Figure 32: Bundling and Taping
Taping
Pipe Clamps
to Secure Pipe
Against Wall
Drain hose
Pipings
Connecting cable
Seal small openings
around pipings with a
gum type sealant.
Trap is required to prevent water
from entering into electrical parts.
Indoor Unit Installed ABOVE
Outdoor Unit - Piping/Trap
Figure 33: IDU Above ODU - Piping and Trap
Seal a small opening
around the pipings
with gum type sealant.
Trap
Trap
Indoor Unit Installed BELOW
Outdoor Unit - Piping/Trap
Pipe Clamps
to Secure Pipe
Against Wall
Figure 34: IDU Below ODU - Piping and Trap
Vapor Line
Liquid Line
Min. 18 Gauge
Cable
Power/Communication
Pipe Sleeve
Insulation Material
Insulation
Material
