Multi Variable Air Conditioners Ducted Type Indoor Unit
11
Model A B C
150（5-7/8） 850（33-1/2） 800（31-1/2）
(10) Drain pipes should have a downward slope of at least 1%~2%, in order to prevent pipes
from sagging install hanger brackets at intervals of 1000~1500mm(39-3/8~59 in.).
Unit: mm(in.)
Fig 4.3.10
4.3.3 Test of Drainage System
◆ Models with water pump
(1) Please test drainage system after electrical work is finished. Inject approximately
1L purified water to drain pan from air vent, do not splash the water over the
electrical components (e.g. water pump. etc.).
1) Spray 1L water on evaporator with sprayer.
2) When commissioning is finished, energize the IDU's and switch to cooling or dry mode,
the water pump will operate, check the transparent portion of the drain socket to make
sure the unit is draining properly.
3) If the communication wire is not connected, communication malfunction “E6” will occur
after 3 min of energizing. In this case, the water pump operates automatically. Make
sure the water pump drains normally through drainage port. The water pump will stop
automatically after running for 1min.
(2) During the test, please carefully check the drainage joint, make sure it is not leaking.
(3) Make sure to perform a drain test before finishing the ceiling.
◆ Models without water pump
(1) Inject some water to the water tray of indoor unit as following:
DUCT09HP230V1BD
DUCT12HP230V1BD
DUCT18HP230V1BD
DUCT24HP230V1BD
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