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Fig. 6-8
Fig. 6-9
6-3. Insulating the Refrigerant Tubing
Tubing Insulation
● Thermal insulation must be applied to all unit tubing,
including distribution joint (purchased separately).
* For gas tubing, the insulation material must be heat
resistant to 248°F or above. For other tubing, it must
be heat resistant to 176°F or above.
Insulation material thickness must be 25/64" or greater.
If the conditions inside the ceiling exceed DB 86°F and
RH 70%, increase the thickness of the gas tubing
insulation material by 1 step.
Taping the flare nuts
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. (Fig. 6-8)
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.
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.
CAUTION
CAUTION
Never grasp the drain or refrigerant connecting
outlets when moving the unit.
Unit side
insulator
Insulation tape (white)
(supplied)
Sealer (supplied)
Flare insulator (supplied)
Tube insulator
(not supplied)
Heat resistant
248°F or above
Vinyl clamps (supplied)
Flare nut
The procedure used for
installing the insulator for
both gas and liquid
tubes is 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)
Gas tubing
Liquid tubing
Insulation
Two tubes arranged together
If the exterior of the outdoor
unit valves has been finished
with a square duct covering,
make sure you allow sufficient
space to use the valves and to
allow the panels to be
attached and removed.
Fig. 6-7
07-056 Mini_ECOi_II_NA 3/19/07 2:41 PM Page 63