34
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
Fig. 5-8
Fig. 5-7
5-3. Insulating the Refrigerant Tubing
Tubing Insulation
●
Thermal insulation must be applied to all unit tubing,
including the distribution joint (purchased separately).
(Fig. 5-7)
* 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 in. 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. 5-8)
CAUTION
Gas tubing
Liquid tubing
Insulation
Three tubes arranged together
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.
Cosmetic
(finishing) tape
Liquid tubing
Gas tubing
Insulation
Balance tubing
Suction tubing
Cosmetic
(finishing) tape
Discharge tubing
Liquid tubing
Balance tubing
Insulation
Four tubes arranged together
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Summary of Contents for U-72MF1U9
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