Working Preparation Before Commissioning; Outdoor Checking - Haier MRV II Instruction Manual

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)
Refrigerant pipe max. length(one way)
Piping length between outdoor and the first
branch(main pipe)
Piping length after the first branch
Piping length between outdoor units
Height difference
between IN &OU
Height difference between outdoor units( the
same system)
Height difference between indoor units
Outdoor is higher
Indoor is higher
- 86 -
300m
150m
Max. 90m
Max. 40m
Less than 10m to the
first gather pipe
Max.50m
Max.40m
Less than 5m (best in
horizon)
Max.15m
Part 3