Multi Variable Air Conditioners Cassette Type Indoor Unit
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(6) Make sure to perform insulation work for all drainage piping in order to prevent any possible
water drop due to dew condensation.
(7) Apply the suitable diameter for converging drainage pipe according to the operating capacity of
the unit.
Fig.4.3.2
①
Drainage pipes assembled by T-shaped joints.
(8) The installation height of raising pipe for drainage should be lower than B. The gradient from
raising pipe towards drainage direction should be at least 1%~2%. If the raising pipe is vertical
with the unit, the raising height should be less than C, as shown in Fig.4.3.3.
Fig.4.3.3
Unit:mm
Model
A
B
C
GMV-ND28~50T/A-T
170
1030
980
GMV-ND56~160T/A-T
220
980
930
(9) Drain pipes should have a downward slope of at least 1%~2%, in order to prevent pipes from
sagging, install hanger bracket at intervals of 1000~1500mm.
Unit:mm
Fig.4.3.4
