Insulating The Refrigerant Tubing; Drain Insulator - Sanyo ECO R410A Installation Instructions Manual

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 tub-
ing insulation material by 1 step.
CAUTION
Taping the flare nuts
Wind the white insulation tape around the flare nuts at
the gas tube connections. Then cover up the tubing con-
nections 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)
Insulation material
The material used for insulation must have good insula-
tion characteristics, be easy to use, be age resistant,
and must not easily absorb moisture. (Fig. 5-9)
CAUTION
If the exterior of the outdoor
unit valves has been finished
with a square duct covering,
make sure you allow suffi-
cient space to use the valves
and to allow the panels to be
attached and removed.
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.
Two tubes arranged together
Liquid tubing
Insulation
Three tubes arranged together
Liquid tubing
Insulation
Four tubes arranged together
Discharge tubing
Balance tubing
Insulation
Sealer (supplied)
Unit side
insulator
Flare nut

Drain insulator

and clamp.
Large
(supplied)
Packing
clamp.
Small
hose band
(supplied)
Never grasp the drain or refrigerant connecting outlets
when moving the unit.
41
Gas tubing
Cosmetic
(finishing) tape
Gas tubing
Balance tubing
Cosmetic
(finishing) tape
Suction tubing
Liquid tubing
Fig. 5-7
Insulation tape (white)
(supplied)
Flare insulator (supplied)
Tube insulator
(not supplied)
Heat resistant
248°F or above
Vinyl clamps (supplied)
Fig. 5-8
Refrigerant tubing and insulator
(not supplied)
Drain pipe and insulator
(not supplied)
Insulation
tape
Vinyl
Flare clamp
insulator
Seal
The procedure used for
installing the insulator for
both gas and liquid
tubes are the same.
Fig. 5-9