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10 | CONNECT THE DRAIN PIPE
7.2.
Check The Leakage
■
Check all the joints with the leak detector or soap water. (See
Fig.7-6 as a reference illustration)
Check-point of indoor unit
Check-point of outdoor unit
A......Lo-stop valve
A......Lo-stop valve
B......Hi-stop valve
C,D..Joints of the connecting pipe to the indoor unit.
C,D..Joints of the connecting pipe to the indoor unit.
7.3.
Insulation
■
Ensure insulating materials cover all the exposed parts of the
flare pipe joints and refrigerant pipe on the liquid-side and the
gas-side. Ensure that there is no gap between them.
■
Incomplete insulation may cause water condensation.
6720874427 (2017/04)
D
C
B
A
B......Hi-stop valve
Fig.7-6
8.
CONNECT THE DRAIN PIPE
8.1.
Install The Drainpipe Of The Indoor Unit
1.
The drainpipe can use PVC pipe (external diameter about 37~
39mm, inner diameter is 32mm).
2.
Joint drainpipe connector to the end side of water pump pipe,
and fix drainpipe together with water outflow pipe and thermal
insulation tube by clasp of water outflow pipe (attached).
Don't use forcing strength to crack the water-pumping pipe.
3) Water-pump pipe and drainpipe from main body must be
wrapped by insulation tube evenly, and bound and tighten band
for obstructing air getting in and coagulation.
4) Prevent water back flowing into unit inside during shutdown,
the drain pipe shall be placed down side and drain water to
outdoor (drain side), the gradient of the drain pipe should be
higher than (1/100), this is important as otherwise water will
remain. (Refer to Fig.8-1 a)
5) When connecting drainpipe, do not drag the pipe this would pull
the main unit. For this, please arrange clamp points every 0.8 to
1.0 metre to avoid pipe be bended (See Fig.8-1 b).
6) When extending a drainpipe, apply protective tube to wrap its
indoor parts for ensuring the lengthen part connected tightly.
7) If the drainpipe is higher than the pump, the pipework but be fitted
vertically , additional pipework will be required. The height of the
drainpipe must be no more 600 mm near the defrost pan so as not
to allow an over flow. (Refer to Fig.8-2).
The joints in drain system must be sealed to avoid water leakage.
8) The height from floor to the end of drainpipe or the bottom of
drain end must not be more than 50 mm. Do not immerse the
end of drainpipe or the bottom of drain end into water. When
draining condensate liquid to a drain, please bend the drainpipe
to a U-sharped hydroseal for avoiding smells coming back by
drainpipe to indoors.
a
b
b
CAUTION
CAUTION
0.8~1.0 m
Gradient:
Gradient:
higher than 1/100
higher than 1/100
>1.0 m
Fig.8-1
4 Way Compact Cassette Type Indoor Unit
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