Installation Of Air Duct - Gree Fresh Air Series Owner's Manual

Multi Variable Air Conditioners Fresh Air Series Indoor Unit
(9) Drain pipes should have a downward slope of at least 1%~2%, in order to prevent pipes from
sagging, install hanger bracket at intervals of 1000~1500mm.
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).
(2) During the test, please carefully check the drainage joint, make sure no any leakage occur.
(3) It's strongly recommended to do the drain test before ceiling decoration.

4.4 Installation of Air Duct

Note:
There should be insulating layer on air-out duct, air-return duct and fresh air duct to avoid heat
①
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.
Each air-out duct and air-return duct should be fixed on a pre-made board with iron frame. The
②
junction of air duct should be well-sealed in order to prevent air leakage.
The design and construction of air duct should comply with national requirements.
③
The edge of air-return duct is suggested to be more than 150mm away from the wall. Add afilter
④
to the air-return opening.
Please consider noise-damping and vibration damping for the design and construction of air
⑤
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.).
Fig 4.3.9
Fig 4.3.10
15
Unit:mm