Haier MRV II - 1. Working preparation before commissioning

Part 3
1.Working preparation before commissioning
1.1 Outdoor checking
1.1.1 Refrigerant pipe length and drop height checking
Allowable refrigerant pipe length and height
Refrigerant pipe total length(one way) 300m
Refrigerant pipe max. length(one way) 150m
Piping length between outdoor and the first
branch(main pipe)
Max. 90m
Piping length after the first branch Max. 40m
Piping length between outdoor units Less than 10m to the
first gather pipe
Outdoor is higher Max.50m
Height difference
between IN &OU
Indoor is higher Max.40m
Height difference between outdoor units( the
same system)
Less than 5m (best in
horizon)
Height difference between indoor units Max.15m
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