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(d) When the laid drain piping is used for multiple equipments, the public
piping should be lower about 100mm than the wash ports of equipments,
as shown in the gure.
Thicker pipes should be used for this application.
(e) The hard PVC tube in the room must be provided with the heat insulating layer.
(f) The water pipe should be lifted to the height of 500mm above the ceiling. If there is any barrier above the ceiling,
a bracket and the like can be used to bypass the barrier. If the extended height exceeds 500mm, there will be too
much back ow amount, causing the overow in the waterspout. Therefore, the height of the drainpipe should be
controlled within the allowance given below.
(g) Don't place the drainpipes at the places where there is irritant gas. Don't put the drainpipe directly into the
sewer, where there might be gases with sulfur.
Testing Drainage System
(a) After nishing the electrical system, test the drainage system.
(b) During testing, make sure that the water ow passes the piping correctly without any water leakage at the
connection.
(c) In the condition of new house, test the drainage system before tting up the ceiling.
(d) Even if it is installed in the season needed to heating, the testing should also be performed.
Procedures
(a) Charge 1000cc of water to the equipment via air outlet port.
(b) During cooling operation, check the drainage system.
G
Wash port
Master unit
Drainage hose
Thread clip
(accessory)
Binding
S
E
S
H
S
J
Wash port
Drainage hose
Top right
C
Drainage hose
The biggest dimension
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