Insulation Work - Toshiba MMU-AP0091H Installation Manual

5-17. Insulation Work

Work procedure
Refrigerant
piping work
Material
Use material withstanding sufficiently to temperature of pipe for the heat insulator.
Example : Heat insulating polyethylene foam (Heat insulating 120°C or more)
Insulation guidelines
All insulation work for brazed joints, flared joints, etc., should be performed only after successfully passing the
leak test. Gas pipes and liquid pipes must be insulated separately in Super MMS air conditioning system.
Examples of Correct Insulation
[Insulating both a gas pipe
and a liquid pipe]
Insulation Insulation
Liquid
Gas
pipe
pipe
Finishing
Control wires
tape
Heat insulating work
(Except connecting section)
[Insulating supported
sections]
Copper pipe
Insulation
Support
bracket
Airtight test
Examples of Incorrect Insulation
Gas pipes and liquid pipes
•
cannot be insulated
simultaneously.
Gas pipe
Liquid
pipe
Control
wires
Finishing
tape
Insulation
Insulate all joints
•
adequately.
This portion is
not insulated.
39
Heat insulating work
(Connecting section)
[Insulating just a gas pipe]
Gas pipe
Liquid
pipe
Control
wires
Finishing
tape
Insulation