Installation Of The Connection Pipe - Gree GMV-Y96WM/A-F(U) Owner's Manual

Photovoltaic Multi VRF
Total capacity of downstream indoor
unit(s) C(Btu/h)
216000<C≤240000
240000<C≤336000
336000<C
(5) Fitting pipe between indoor unit and manifold
Manifold should be matched with fitting pipe of indoor unit.
Rated capacity of indoor unit
C(Btu/h)
C≤9500
9500<C≤17100
17100<C≤48500
48500<C≤72000
72000<C

4.4 Installation of the Connection Pipe

NOTICE!
Before welding the pipeline sealing cap, please make sure there's no refrigerant in pipeline.
If welding it directly, it may cause unnecessary property damage or personal injury.
4.4.1 Precautions when installing the connection pipe
(1) Conform to the following principles during piping connection: Connection pipeline
should be as short as possible. The height difference between indoor and outdoor
units should be as short as possible. Keep number of bends as little as possible. The
radius of curvature should be as large as possible.
(2) Weld the connection pipes between indoor and outdoor unit. Please strictly conform to
the requirements for welding process. Rosin joints and pin holes are not allowable.
(3) When laying the pipes, be careful not to deform them. The radius of bending parts
should be more than 200mm(7-7/8in.). The pipes cannot be repeatedly bent or
stretched, otherwise the material will get harden. Do not bend or stretch the pipe over
three times at the same position.
Dimension of the pipe of indoor branch
Gas Pipe mm(in.)
Φ34.9(1-3/8)
Φ34.9(1-3/8)
Φ41.3(1-5/8)
Fig.4.3.8
Pipe between indoor branch and IDU
Gas Pipe mm(in.)
Φ9.52(3/8)
Φ12.7(1/2)
Φ15.9(5/8)
Φ19.05(3/4)
Φ22.2(7/8)
17
Liquid Pipe mm(in.)
Φ15.9(5/8)
Φ19.05(3/4)
Φ19.05(3/4)
Liquid Pipe mm(in.)
Φ6.35(1/4)
Φ6.35(1/4)
Φ9.52(3/8)
Φ9.52(3/8)
Φ9.52(3/8)