McQuay MDS080BR Installation Guide Page 82

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Design & installation Guide For McQuay MDS Multi System
4.3.2 Refrigerant Piping Assembly Process
Three principle of the refrigerant piping assembly
Processing method
Dry Piping assembly air blow dry
Clean
Nitrogen charging
air blow
Piping assembly
Use the right material such as copper and welding rod
No air leakage Abide by the welding process
Abide by the flare fitting process
air leakage test
Dry Clean No air leakage
no moisture no dust No refrigerant leakage
Three principle of the refrigerant pipe
The EXV must be installed vertically
The throttle is installed vertically
EXV
To indoor unit
To outdoor unit
Sequence
install the indoor unit cut the piping required install the pipe nitrogen charging
welding blow air leakage test dry
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