1)
Before the unit starts up, a certain number of verifications must be performed on the installation to ensure
that the unit will operate under the best possible conditions. The check list below is not exhaustive and
should only be used as a minimum reference basis:
A. Make sure fan rotates freely;
B. Inspect all water piping for flow direction;
C. Verify all system piping is correct for operation as per installation requirements;
D. Check voltage of the unit power supply and make certain voltage is within authorized limitations;
E. Make sure the unit is properly grounded;
F. Check the presence of protective and breaking devices;
G. Check all electric connections for tightness.
H. Check all piping for leaks and air is well ventilated.
Before start-up
2)
Pre-start up
A. When the installation of unit is completed, water system pipes are well connected and air purging is
done, no leakage or other problems, the unit can be powered to start up.
B. Turn on the unit, press the on-off button on the operation panel to start the unit. Please check carefully
if there is some abnormal noise or vibration, or the display of wired controller is normal or not.
C. After the unit is working properly for 10 minutes, without any problem, then the pre-start up is
completed; If not, please refer to the Service and Maintenance chapter in this manual to solve the
problems.
If everything above is OK, the unit can start up.
If any of them fails, please fix it.
It is suggested not to run "heating" or "hot water" mode, when ambient temperature is
over 32
℃,
otherwise unit may go into protection mode easily.
3.9 Test run
After installation finished, please fulfill the water system with water and purge out air
in the system before start-up.
3. Installation
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