Installation Of Air Duct - Gree GMV-ND30PLS/C-T Owner's Manual

(3) It is strongly recommended to do the drain test before ceiling decoration.

4.4 Installation of Air Duct

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 (5-7/8inch) 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
(2) Installation of Circular Duct
Multi Variable Air Conditioners Ducted Type Indoor Unit
Fig.4.3.11
Fig.4.4.1
Fig.4.4.2
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