Insulating The Refrigerant Tubing - Panasonic U-36LE1U6 Installation Instructions Manual

5-3. 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
If the exterior of the outdoor
CAUTION
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.
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)
Two tubes arranged together
Liquid tubing
Insulation
Sealer (supplied)
Insulation tape (white)
Unit side
insulator
Flare nut
Vinyl clamps (supplied)
28
Gas tubing
Fig. 5-7
(supplied)
Flare insulator (supplied)
Tube insulator
(not supplied)
Heat resistant
248°F or above
Fig. 5-8