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2.10 Trial run
Checking list before trial- running:
Correct installation of the system.
Correct connection of water piping and wiring.
Correct connection of air inlet and outlet.
Condensate draining smoothly well.
All the insulation work for all hydraulic part.
Correct power supply.
No air in the water pipeline and all valves opened.
Effective electric leakage protector installation.
Sufficient inlet water pressure, between 0.15MPa and 0.65Mpa (1,5 ~ 6,5 atm).
Water temperature display
The temperature shown of the display depends on the upper sensor.
It is normal that the display temperature has reached to target temperature.
Compressor still running, because the lower water temperature does not get to target
temperature.
Heat source shift
The default heating source is heat pump. If the ambient is range out of heat pump, heat
pump will stop running, and the unit will shift automatically to activate E-heater and show
the icon ‘LA’ on the display, then if the ambient temperature goes into the running range of
heat pump again, it will stop E-heater and shift automatically to heat pump again, and the
icon ‘LA’ will be extinguished.
E-heater will be activated once for the current heating progress, if want to apply E-heater
again, the button of ‘E-HEATER’ should be pressed once.
If the target setting water temperature is higher than the maximum temperature (Heat
pump), the unit will activate heat pump firstly to the maximum temperature, then stop heat
pump, activate E-heater to continually heat water to the target temperature.
If manually activate the E-heater running mode when heat pump running, E-heater and heat
pump will work together until the water temperature gets to target temperature. So if want to
heat quickly, E-heater should be activated manually.
2.11 Maintenance
Recommended regular maintenance table
Checking
item
Checking content
Checking
frequency
Action
1
Air filter (inlet/outlet)
Every month
Clean the filter.
2
Anode rod
Every half year
Replaced if it has been used out.
3
Inner tank
Every half year
Clean the tank.
4
E-heater
Every half year
Clean the E-heater.
5
PT valve
Every year
Operate the hander of PT valve to
ensure that waterways are clear.
If water dose not flow freely when operating the hander, replace PT vale with a
new one.
