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Important
Because capillary tubing is installed in the outdoor unit,
both the wide and narrow tubes of this air conditioner
become cold. Therefore, to prevent heat loss and wet
floors due to dripping of condensation water, both
tubes must be well insulated with proper insulation
material. The thickness of the insulation material
should be a min. 8 mm (5/16").
7-7. Taping the Tubes
(1) At this time, the refrigerant tubes (and electrical
wiring if local codes permit) should be taped with
armoring tape in 1 bundle. To prevent the con-
densation from overflowing the drain pan, keep
the drain hose separate from the refrigerant
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. 7-9)
(3) Clamp the tubing bundle to the wall, using 1
clamp about every 3 feet.
NOTE
Do not wind the armoring tape too tightly since this will
decrease the heat insulation effect. Also ensure that
the condensation drain hose splits away from the
bundle and drips clear of the unit and the tubing.
7-8. 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. 7-10)
Insulation
Thickness:
Thickness:
Min. 5/16 in.
Min. 5/16 in.
Narrow tube
Wide tube
0999_C_I
Clamp
Insulated tubes Drain hose
0136_M_I
Fig. 7-9
Apply putty here
Tubing
0137_C_I
Fig. 7-10
Page 23
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