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1-283
Tubing Insulation
Taping the flare nuts
If the exterior of the outdoor unit valves has been finished with a square duct covering, make sure you allow
sufficient space to access the valves and to allow the panels to be attached and removed.
Insulating the Refrigerant Tubing
Thermal insulation must be applied to all units tubing,
including distribution joint (purchased separately).
Insulation material thickness must be 10 mm or greater.
If the conditions inside the ceiling exceed DB 30°C and RH
70%, increase the thickness of the gas tubing insulation
material by 1 step.
Wind the white insulation tape around the flare nuts at the gas
tube connections. Then cover up the tubing connections with
the flare insulator, and fill the gap at the union with the supplied
black insulation tape. Finally, fasten the insulator at both ends
with the supplied vinyl clamps.
Insulation material
The material used for insulation must have good insulation characteristics, be easy to use, be age resistant,
and must not easily absorb moisture.
* For gas tubing, the insulation material must be heat
resistant to 120°C or above. For other tubing, it must be
heat resistant to 80°C or above.
Two tubes arranged together
Inter-unit
control
wiring
Gas tube
Liquid tube
Armoring tape
Insulation
CAUTION
After a tube has been insulated, never try to bend it into a narrow curve because it can cause the tube to
break or crack.
Never grasp the drain or refrigerant connecting outlets when moving the unit.
CAUTION
Insulation tape (white) (supplied)
Sealer (supplied)
Flare insulator (supplied)
Tube insulator
(not supplied)
Heat resistant
120°C or above
Unit side insulator
Flare nut
Vinyl clamps (supplied)
Refrigerant tubing and insulator (not supplied)
Drain pipe and insulator
(not supplied)
Drain insulator and clamp.
Large (supplied)
Insulation tape
Packing clamp. Small hose band
(supplied)
Vinyl clamp
Flare insulator
Seal
The procedure used for installing the insulator
for both gas and liquid tubes is the same.
SM830231-02̲Single̲欧州.indb 283
SM830231-02̲Single̲欧州.indb 283
2014/09/19 13:21:46
2014/09/19 13:21:46
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