Sanyo CHDZR14053, XMHX1252, XMHX1852 Two tubes arranged together, Three tubes arranged together

6-3. Insulating the Refrigerant Tubing

Tubing Insulation

●Thermal insulation must be applied to all unit tubing, including the distribution joint (purchased separately). (Fig. 6-7)

*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.

If the exterior of the outdoor unit CAUTION 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.

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. 6-8)

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.

Two tubes arranged together

Liquid tubing Gas tubing

Insulation

Three tubes arranged together

	Cosmetic
	(finishing) tape	Gas tubing
Liquid tubing

Insulation	Balance tubing
Four tubes arranged together
Cosmetic
(finishing) tape	Suction tubing
Discharge tubing
Balance tubing
Insulation	Liquid tubing

Fig. 6-7

Sealer (supplied)

	Insulation tape (white)
	(supplied)
	Flare insulator (supplied)
Unit side	Tube insulator
	(not supplied)
insulator	Heat resistant
	248°F or above

CAUTION

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.

Flare nut	Vinyl clamps (supplied)
	Fig. 6-8
	Refrigerant tubing and insulator
Drain insulator	(not supplied)
	Drain pipe and insulator
and clamp.
Large	(not supplied)
(supplied)
Packing
clamp.	Insulation
Small	tape
hose band	Vinyl
(supplied)
	Flare clamp
	insulator
	Seal

The procedure used for installing the insulator for both gas and liquid tubes are the same.

Fig. 6-9

Never grasp the drain or refrigerant connecting outlets

when moving the unit.

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