Sanyo SPW-UMR94EXH56, SPW-UMR124EXH56, SPW-UMR164EXH56, R410A Insulating the Refrigerant Tubing

5-3. Insulating the Refrigerant Tubing

Tubing Insulation

●Thermal insulation must be applied to all unit tub- ing, including distribution joint (purchased sepa- rately).

*For gas tubing, the insulation material must be heat resistant to 120°C or above. For other tubing, it must be heat resistant to 80°C or above.

Insulation material thickness must be 10 mm or greater.

If the conditions inside the ceiling exceed DB 30°C and RH 70%, increase the thickness of the gas tubing insulation material by 1 step.

Two tubes arranged together

Narrow tubing Wide tubing

Insulation

Three tubes arranged together

Cosmetic

(finishing) tape Wide tubing

Narrow tubing

CAUTION

Taping the flare nuts

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.

Insulation	Balance tubing
	Fig. 5-7
Sealer (supplied)

Wind the white insulation tape around the flare nuts at the wide 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 sup- plied vinyl clamps. (Fig. 5-8)

Insulation material

The material used for insulation must have good insu- lation characteristics, be easy to use, be age resis- tant, and must not easily absorb moisture.

After a tube has been insu-

CAUTION lated, never try to bend it into a narrow curve

because it can cause the tube to break or crack.

	Insulation tape (white)
	(supplied)
	Flare insulator (supplied)
Unit side	Tube insulator
	(not supplied)
insulator	Heat resistant
	120°C or above
Flare nut	Vinyl clamps (supplied)
	Fig. 5-8
	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 wide and narrow
	tubes is the same.

Fig. 5-9

Never grasp the drain or refrigerant connecting outlets when moving the unit.

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