Multi Variable Air Conditioners Ducted Type Indoor Unit
11
(3) It is strongly recommend to do the drain test before ceiling decoration.
Fig 4.3.10
4.4 Installation of Air Duct
NOTICE
!
①
There should be insulating layer on air-out duct, air-return duct and fresh air duct to
avoid heat loss and moisture. Adhere a nail on the air duct and then add thermal
sponge with a layer of tin. Fasten it with a nail cover and then seal the junction with tin
tapes. You can also use other materials that have good insulation quality.
②
Each air-out duct and air-return duct should be fixed on a pre-made board with iron
frame. The junction of air duct should be well-sealed in order to prevent air leakage.
③
The design and construction of air duct should comply with national requirements.
④
The edge of air-return duct is suggested to be more than 150mm(5-7/8 in.) away from
the wall. Add a filter to the air-return opening.
⑤
Please consider noise-damping and vibration damping for the design and construction
of air duct. Besides, noise source must be away from people. For instance, do not have
the air-return opening installed on top of the user (Offices, rest area, etc.).
4.4.1 Installation of Air-out Duct
(1) Installation of the Rectangular Duct
Fig 4.4.1
