73
S4179544
73
S4179544
8-4.
Insulating the Refrigerant Tubing
Always insulate tubes after
draining water and complet-
ing leak tests on all connec-
tion points.
To avoid condensation and water leaks, both the wide
tube and narrow tube (only for heat pump) must be
insulated with the supplied insulation materials.
Taping the flare nuts
Wind the white insulation tape around the flare nuts at
the wide 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 plastic
clamps. (Fig. 8-8)
Insulation material
The material used for insulation must have good
insuIation characteristics, be easy to use, be age
resistant, and must not easily absorb moisture.
After a tube has been insu-
lated, never try to bend it
into a narrow curve because
it can cause the tube to
break or crack.
Important
CAUTION
Heat pump type
Cooling only type
CAUTION
Insulator
Thickness:
Min. 8mm
Narrow tube
Wide tube
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The procedures used for
installing the insulator for
both wide and narrow
tube are the same.
Seal
Flare
insulator
Vinyl
clamp
Insulation
tape
Refrigerant tubing and insulator
(not supplied)
Drain pipe and insulator
(not supplied)
Drain insulator
and clamp.
Large
(supplied)
Packing
clamp.
Small
hose band
(supplied)
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Never grasp the drain or refrigerant connecting
outlets when moving the unit.
Fig. 8-9
Fig. 8-8
Refrigerant tubing
Fig. 8-7
Unit side
insulator
Insulation tape (white)
(supplied)
Sealer (supplied)
Flare insulator (supplied)
Tube insulator
(not supplied)
Heat resistant
140°C or higher
Vinyl clamps (supplied)
Flare nut
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Insulation
Thickness:
Min. 8 mm
Wide tube
Narrow tube
Thickness:
Min. 8 mm
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