Installation Of Air Duct - Gree GMV-ND280PH/A-T Owner's Manual

8) The horizontal pipe can be connected to vertical pipe in the same level; please select the
connection way as shown in following fig.
NO1: Connection of drainage pipe joints (Fig4.36)
NO2: Connection of downspout elbow (Fig4.3.7)
NO3: Inserting pipe connection (Fig4.3.8)
Fig 4.3.6
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 recommend to do the drain test before ceiling decoration.

4.4 Installation of Air Duct

Notes:
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.
Connection of
drainage pipe joints
1000-1500mm
Multi Variable Air Conditioners Duct Type Indoor Unit
Connection of
downspout elbow
Fig 4.3.7
Fig 4.3.9
Inject water
Fig 4.3.9
11
Inserting pipe connection
Fig 4.3.8