Gree NCHS2D, Руководство пользователя

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GMV6 HR Mode Exchange Box
17
Take out the two silencers, insert nozzle ODΦ22 mm in silencer 1 to the high pressure gas pipe
on the left side of box , then insert nozzle ODΦ28 mm in silencer 2 to the low pressure gas pipe on the
left side of box, weld them together.
Unit
：
mm
Fig.4.2.4
NOTE!
During welding, wrap up the pipe with wet cloth (as shown in the Fig.4.2.4).
4.2.2 Notices for Welding
(1) Pipeline connection must adopt socket soldering welding. The gap between socket
components cannot be too big or too small to only make sure they won’t fall down by relying
on friction force.
Fig.4.2.5
(2) Please note that protect thermal insulating sponge and solenoid valve in the pipeline. Please
wrap the pipeline with wet cloth to weld it for protection.
(3) Before welding the pipeline, please charge nitrogen at first. Nitrogen must be charged for
protection during the whole welding process and within 30s after welding is finished. The
nitrogen cylinder must be connected to the pressure control valve and the flow speed of
nitrogen should be controlled within 4~6L/min (air pressure: 0.02~0.05Mpa). During
installation process, please adjust the flow speed of nitrogen by control valve according to the
diameter of copper pipe.