3
•
W
hen charging refrigerant, the refrigerant must be in liquid state from the tank.
•
T
o prevent EMC from interfering other appliances, please keep indoor unit, outdoor unit,
power cable and connecting wire at least 1m away from those appliances .
•
F
luorescent lamp (reverse phase or rapid start type) may interfere the remote controller's
signal. Please install indoor unit away from fluorescent lamp. The farther, the better.
•
T
he temperature and flow of the outdoor unit inlet water need to conform to the requirements
of the specification, the water temperature is too low or the water flow is too small will cause
the unit malfunction.
•
T
he quality of the circulating water must conform to the specifications. otherwise it will
decrease the system life.
•
T
he pipe for external devices water system should use corrosion resistant materials, otherwise
may cause corrosion.
•
W
ater system Max. pressure is 1.6MPa, if the water pressure for the target flow switch is
greater than 1.6MPa, may affect the target flow work.
•
W
ater flows too small protection, after the compressor operation, if the temp. difference
between Twi and Two is too large, the unit will standby and alarm, 100 seconds later resume
automatically, if it occurs three times in an hour, confirm the failure.
•
I
f the inlet water temperature is below 10°C or the outlet water temperature is below 4°C, in
order to avoid the heat exchanger cracking due to the freezing water, the following measures
must be implemented:
The least inlet water flow rate must be over 70% of the rated value.
Add antifreeze such as ethylene glycol into the water system, and use corrosion inhibitors to
ensure the PH value of the water is about 7.5, or it will cause the heat exchanger corrosion
cracking.
Inform the technical personnel to carry out the necessary inspection and setting for the unit.
•
I
f the outdoor unitislower than the indoor units and the high drop is less than 25 meters,
inletwater temperature can reach 7°C when cooling.
When heating , if inlet water is groundwater type, when the master unit has the maximum
water flow rate (1.5 times the rated value),the lowest inlet water temperature can be down to
5°C .
When heating , if the cooling capacity of the smallest indoor unit in the system is not less than
3.6kW, and the inlet water flow rate is not exceed the rated value, the maximum inlet water
temperature can be up to 50°C.
Safety
