Outdoor Checking - Haier MRV II Instruction Manual

1. Working preparation before debugging

1.1 Outdoor checking

1.1.1 Refrigerant pipe length and drop height checking
Allowable refrigerant pipe length and height
Refrigerant pipe 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 IU &OU
Height difference between outdoor units( the
same system)
Height difference between indoor units
Voltage
Outdoor is higher
Indoor is higher
Voltage range
Voltage decrease
when starting
Unbalance
phases
- 25 -
Indoor
100m
Max. 70m
Max. 50m
Less than 5m to the
first gather pipe
Max.50m
Max.40m
In horizon
Max.20m
Rated voltage ±10%
Rated voltage ±15%
among Rated voltage ±3%
Part 2
unit, Max.