Delta 21CK018C24 Instruction Manual page 55

F、Installation of Protective Layer of Connecting Pipe
1. To avoid generation of condensate on the connecting pipe and avoid leakage, the big pipe and the
small pipe of the connecting pipe must be covered by thermal insulation materials, be bundled by
adhesive tape, and be isolated from air.
2. The joint connecting to the indoor unit must be wrapped by thermal insulation material. There shall
be no gap between the connecting pipe joint and the wall of the indoor unit. Refer to Fig 18.
Caution:
After the pipes are wrapped by protective materials, never bend the pipes to form very small angle,
and otherwise the pipes may crack or break.
3. Use adhesive tape to wrap the pipes:
(1) Use adhesive tape to bundle the connecting pipe and the cables together. To prevent condensate
from overflowing out from the drainage pipe, separate the drainage pipe firm the connecting pipe
and the cables.
(2) Use thermal insulation tape to wrap the pipes from the bottom of the outdoor unit until the upper
end of the pipe where the pipe enters the wall. When wrapping thermal insulation tape, the later
circle of tape must cover half of the front circle of tape (Refer to Fig 19).
(3) Wrapped pipe must be fixed to wall using pipe clamps.
Caution:
（1） Do not wrap the protective tape too tight, otherwise the efficiency of thermal insulation
may be decreased. Ensure that the condensate drainage flexible tube is separate from the
bundled pipes.
（2） After the protective work is completed and the pipes are wrapped, use seal material to
block the hole in the wall, so as to prevent rain and wind from entering the room.
G、Position and Method of Installing Wire Controller
1、First select an installation position. According to the size of the communication line of the
wire controller, leave a recess or a embedded wire hole to bury the communication line.
2、If the communication line between the wire controller (85 ×85 ×16) and the indoor unit is
surface-mounted, use 1# PVC pipe and make matching recess in the wall (refer to Figure 19);
Fig.18
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Fig.19