14
Electric wiring and the application
Before opening the front plate and electrical cabinet, always switch off all power supply (i.e. indoor unit power supply,
electrical water heater power supply and tank unit power supply). Only authorized and licensed electrician can open the
front plate and electrical cabinet to install and maintain the unit.
Main components of electrical cabinet
Main control board
Main power supply terminal block
Power terminal block
Transformer
Load relay circuit board
Communication terminal
block
Water pump drive
terminal block
Leakage protector
Power supply cord installation instruction
•
The fluctuation range of power supply voltage must be within 10% of the working voltage of the unit.
• The wiring is allowed to pass 1.25 times of the rated current.
•
The communication line must be twisted-pair wiring or shielded wire which diameter must be greater than 0.75mm2.
•
The insulation resistance between all electrical terminals of the unit and the machine body shall not be less than 3MΩ.
•
The power cord and control wiring shall not be bundled with the refrigerant pipeline and water piping, and they must be
arranged separately through conduit.
Model
Power
source
Sectional area of
power line (mm²)
Rated current of
circuit breaker (A)
Leakage current / action current of
leakage protector (mA)
HU062WAMNA
1PH, 220-240V~,
50HZ
6
32
32A 30MA less than 0.1S
HU102WAMNA
1PH, 220-240V~,
50HZ
6
32
32A 30MA less than 0.1S
