Gree GMV-WQ120WM/A-F, Руководство пользователя

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Water-cooled Heat Recovery DC Inverter VRF
13
4.2.6.1 Branch selection of indoor unit of mode exchanger (“C1”)
R410A refrigerant system
capacity of down steam indoor units: X
(Btu/h)
Model
Y-type branch
48500
＜
X
≤
96000
FQ01B/A
4.2.6.2 Piping size between mode exchanger and downstream indoor unit (“m”)
Size of connection pipe between indoor branch and indoor unit should be consistent with the
connection pipe of indoor unit.
Piping between indoor branch and IDU “ m”.
Rated capacity of indoor units
(Btu/h)
Size of connection pipe between indoor branch and IDU
Gas pipe mm(in.) Liquid pipe mm(in.)
48500
＜
C
≤72000
Φ19.05 (3/4) Φ9.52(3/8)
72000
＜
C
≤96000
Φ22.2 (7/8) Φ9.52(3/8)
4.3 Installation of the Connection Pipe
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.
4.3.1 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. The quantity of bends should be as less as possible. The radius of
bending should be as large as possible.
(2) Weld the connection pipes between indoor and outdoor units. 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 should not be repeatedly bent or extended,
otherwise the material will get harden. Do not bend or extend the pipe over three times at the
same position.
(4) Please use a torque wrench to connect union nut on the indoor unit as below.
Fig.4.3.1
1) Align the expansion end of copper pipe with the center of threaded joint. Tighten the flare
nuts with hands.