Installation Of Air Duct - Gree GMV-ND07PHS/B-T(U) Owner's Manual

Multi Variable Air Conditioners Ducted Type Indoor Unit

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 (5-7/8 inch) 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.).
⑥ When the air pipes or engineering grilles have been installed well, internal parts are
forbidden to be touched with hands.
4.4.1 Shape and Size of Air Outlet and Air-return Opening
Fig.4.4.1 Air Outlet
Fig.4.4.2 Air-return Opening
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