Gree Hydro Box NRQR16L/A-T, Руководство пользователя

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Hydro Box
13
Notes:
①
Refrigerant pipe length between mode exchanger and hydro box a
≤
10m.
②
When 2 mode exchange branches are connected in parallel with a 30kW hydro box, two
adjacent branches must be selected;
③
Please refer to the manual of mode exchange for branch linkage setting and
communication line setting.
4.2.2.3 Selection of branches between mode exchange downstream and hydro box
R410A Refrigerant System
Total capacity of downstream
Hydro box X(kW)
Model
Y-type Manifold
<22.4 -
22.4 ≤X≤30.0 FQ01B/A
4.2.2.4 Pipe Welding
(1) Prepare the inlet/outlet field piping just in front of the connection (do not braze yet).
(2) Unscrew 4 screws on plates, removing 2 plates of refrigerant pipe.
(3) Remove 2 pieces insulated cotton from the gas pipe and liquid pipe.
(4) Braze the field piping.
Notes:
(1) Make sure there is nitrogen protection during welding: Brazing without carrying out nitrogen
replacement or releasing nitrogen into the piping will create large quantities of oxidized film on the
inside of the pipes, adversely affecting valves and compressors in the refrigerating system and
preventing normal operation.
(2) When brazing while inserting nitrogen into the piping, nitrogen must be set to 0.02 MPa with
a pressure-reducing valve (just enough so that it can be felt on the skin).
Fig.4.7