Sanyo CL2472 User Manual download pdf (Page 110)

5-4. Connecting Tubing between Indoor and

Outdoor Units

a) Tightly connect the indoor side refrigerant tubing exten-

ded from the wall with the outdoor side tubing. (Fig. 52)

b) To fasten the flare nuts, apply specified torque as:

Table 6

5-5. Insulation of Refrigerant Tubing

To prevent heat loss and wet floors due to dripping of con-

densation, both tubes must be well insulated with a

proper insulation material. (Fig. 53)

The thickness of the insulation should be a minimum 5/16"

(8 mm). (Fig. 54)

5-6. Taping the Tubes

(1) At this time, the 2 refrigerant tubes (and electrical wire

if local codes permit) should be taped together with

armoring tape. The drain hose may also be included

and taped together as 1 bundle with the tubing.

(2) Wrap the armoring tape from the bottom of the outdoor

unit to the top of the tubing where it enters the wall. As

you wrap the tubing, overlap half of each previous tape

turn. (Fig. 55)

(3) Clamp the tubing bundle to wall, using 1 clamp approx.

every 47" (120 cm).

Do not wind the armoring tape too tightly, since this will

decrease the heat insulation effect. Also, be sure the con-

densation drain hose splits away from the bundle and drips

clear of the unit and the tubing.

5-7. Finishing the Installation

After finishing insulating and taping over the tubing, use

sealing putty to seal off the hole in the wall to prevent rain

and draft from entering. (Fig. 56)

NOTE

IMPORTANT

Indoor unit

Outdoor unit

Spanner

Torque wrench

Fig. 52

Insulation

Min.

5/16"

(8 mm)

Thickness:

min. 5/16"

(8 mm)

Fig. 54

Fig. 55

Clamp

Insulated tubes

Apply putty here

Tubing

Fig. 56

CAUTION

After a tube has been insulat-

ed, never try to bend it into a

narrow curve, as this may

cause the tube to break or

crack.

Insulation

Fig. 53

Tube Dia. Tightening Torque

1/4" (6.35 mm) Approx. 120 – 160 lbs·in (140 – 180 kgf·cm)

3/8" (9.52 mm) Approx. 300 – 360 lbs·in (340 – 420 kgf·cm)

1/2" (12.70 mm) Approx. 430 – 540 lbs·in (490 – 610 kgf·cm)

5/8" (15.88 mm) Approx. 590 – 710 lbs·in (680 – 820 kgf·cm)

07-154 CL1872-2472 6/12/07 3:19 PM Page 21

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Sanyo CL2472 User Manual Page 110

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