HAIER CHILLER
2
7
12.7.2 Operation condition
Operation ambient temp.: -10
℃—
+60
℃
Preserved ambient temp.: -20
℃—
+70
℃
Relative humidity: 40%
—
98%
12.7.3 Temp. sensor
System total return water temp. sensor: 3470-502
±
1%
System total outlet water temp. sensor: 3470-502
±
1%
Module outlet water temp. sensor: 3470-502
±
1%
Outdoor ambient temp. sensor: 3470-502
±
1%
1# outdoor coil temp. sensor: 3470-502
±
1%
2# outdoor coil temp. sensor: 3470-502
±
1%
3# outdoor coil temp. sensor: 3470-502
±
1%
12.7.4 Precise
Sample temp. precise of each sensor:
±
1
℃
Precise of temp. control:
±
1
℃
Timer error in 24 hours is less than 20 senconds
12.7.5 Communication distance
Max. communication distance between controllers: 1.2km
Max. distance when MCU use the power from PCB: 100m
Max. distance when MCU use the power from local: 1.2km
12.7.6 Power output
Compressor: 5A*3 (AC contactor is connected outside)
Outdoor fan motor: 5A (AC contactor is connected outside)
Four-way valve: 5A*3
Cooling(heating) water pump: 5A (AC contactor is connected outside)
Electric heater: 5A (AC contactor is connected outside)
12.8 Inspection before operation
1. Voltage is consistent with requirement; phase voltage and phase current are balaced.
2. Inspecting the power source connection, especially section of the power cord, earthing and
connecting terminal.
3. Water pipe must keep clean without impurities. At last, flush the pipe 2 or 3 times (bypassing the
system), make sure that all the impurities and oxides have been washed out.
4. make sure that water source has been connected properly, if the water pump is not subject to
interlock control, start water pump before starting the unit.
5. Check if the water circulating system works well, water system has enough water, and make sure
