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Refrigerant Piping Connections
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REFRIGERANT PIPING CONNECTIONS
Bundling and Cutting Line
Piping and cabling must be insulated and bundled together correctly for safety and usage. Follow proper methods and procedures as outlined
here and on the next pages to ensure installation and piping are correctly installed.
Insulation material
As shown in Figure 46, the connection pipe, along with the indoor
unit pipe are fully encased in insulation material.
1. Bind together the two pipes, using vinyl tape. Make sure there
are no gaps during the binding.
2. Be sure the tube cutting line is placed upward (Figure 47).
3. Verify that rear piping house section is wrapped with vinyl tape.
• Use a narrow type of vinyl tape for this step.
4. Continue to wrap the indoor unit pipe as connected to the outdoor
connection pipe as shown in Figure 48.
Figure 46: Piping with Insulation Material
Figure 47: Correct Cutting Line Placement
Figure 48: Wrapping Connection Pipe to Indoor Unit’s Pipe
Figure 49: Bundling Pipe and Drain Hose, Rear of IDU
Figure 50: Bundling and Placement at Rear of IDU
Gas Pipe
Liquid Pipe
Cutting Line
Cutting Line
Correct
Incorrect
Vinyl tape(narrow)
Connection pipe
Connecting cable
Vinyl tape (wide)
Wrap with vinyl tape
Indoor unit pipe
Pipe
Wrap with vinyl tape
Drain hose
Pipe
Vinyl tape(wide)
5. Using a wider vinyl tape, bundle the piping and drain hose togeth-
er (Figure 49).
• Tape should be sufficient to cover the piping in order to fit into the
rear piping housing area at the back of the indoor unit (Figure 50).
Drain hose
Connecting pipe
Connecting
cable
Tape
Drain hose
