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Condensate Drainpipe
B
A
As the inside of the unit is in the
negative pressure status, it is required
to set up a backwater elbow. The
requirements is:
$ %3LQFK
P is the absolute pressure inside the
unit. The unit of the pressure is psig.
Condensate Drainpipe
Enlarged View
B
A
Figure 3-1-11
Drain port
Fastener
Drain cap
Fi
ure 3-1-12
(5) Use a suitable drain hose, and see Table 3-3-3 for its size.
(6) There is a drain port on both the left and right sides. Select the drain port to match the local
conditions (Figure 3-1-10).
(7) When the unit is shipped from the factory, the drain port is defaulted to be the one on the left side
(electric box side), the port on right side has been plugged.
(8) When using the drain port on the right side of the unit, reinstall the drain cap to the left side drain
port (Figure 3-1-12).
(9) Be sure to insulate where the drain port and the drain hose is connected (Figure 3-1-13).
(10) The unused drain port also should be insulated properly (Figure 3-1-14).
CAUTION
Always check that the drain cap is installed to the unused drain port and is fastened with the nylon fastener.
If the drain cap is not installed, or is not sufficiently fastened by the nylon fastener, water may drip during the
cooling operation.
Drain hose insulation
Drain port
Insulated drain hose
Insulated drain hose
Unit
0mm(0inch)
Drain hose insulation
Drain port
Drain cap
0mm(0inch)
Unit
Drain cap
Figure 3-1-13 Figure 3-1-14
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