Multi Variable Air Conditioners Compact Cassette Type Indoor Unit
13
(9) 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.4.3.2.6.
Unit:mm
Fig.4.3.2.6
Unit:mm
GMV-ND15T/E-T
GMV-ND18T/E-T
GMV-ND22T/E-T
GMV-ND28T/E-T
GMV-ND36T/E-T
GMV-ND45T/E-T
GMV-ND50T/E-T
265 935 885
4.3.3 Test of Drainage System
(1) Please test drainage system after electric work is finished.
Inject approximately 1L purified water to drain pan from air vent, ensure that not to splash the
water over the electrical components (e.g. water pump. etc.).
1) In case of commissioning finished, please energize the IDUs and switch to cooling or dry
mode, meanwhile, the water pump operates, you can check the draining through the
drain socket.
2) If communication wire is not connected, communication malfunction “C0” will occur after
60s of energizing. In this case, the water pump operates automatically. Check if the water
pump drains normally through drainage port. The water pump will stop automatically
after running for 10mins.
(2) During the test, please carefully check the drainage joint, make sure no any leakage occur.
(3) It is strongly recommend to do the drain test before ceiling decoration.
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