24
Operation Instructions
■
Unit Service Conditions
1. Unit operating range
2. Service conditions
Item
Contents
Power supply voltage
Within ±10% of the rated voltage
Power supply frequency
Within ±1% of rated frequency
Phase imbalance
Voltage difference between two phases of the power supply is less than
2% of the rated voltage
Chilled water flow
Within ±30% of the rated water flow
Chilled water pressure
Below 0.7MPa
Chilled water quality
Free from corrosive copper, iron, dissolved matters of welding materials
Installation site
Provided with snow protection and ventilation
Ambient temperature
Refer to the above diagram (operating range).
Relative humidity
Below 90%
Optimal operating temperature 12
℃
for cooling, 40
℃
for heating
Note: the operating range based on GB/T 18430.1& GB/T 18430.2, and the rated water flow is obtained
from lab. If the unit exceeds the maximum operating range, it only can run for a short time, otherwise the
unit may send fault alarm or be damaged.
