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Installation & Owner‘s Manual
8. MAINTENANCE
Check the connection between power supply plug and socket
and ground wiring regularly;
In some cold area (below 0 ), if the system will be stopped for
a long time, all the water should be released in case of freezing
of inner tank and damage of E-heater.
It is recommended to clean the inner tank and E-heater every
half year to keep an efficient performance.
Check the anode rod every half year and change it, if it has
been used out. For more details, please contact the supplier or
the after-sale service.
It is recommended to set a lower temperature to decrease the
heat release, prevent scale and save energy if the outlet water
volume is sufficient.
Clean the air filter every month in case of any inefficiency on the
heating performance.
In terms of the filter set in air inlet directly (namely, air inlet
without connect with duct), the method of dismantle the filter is:
anti-clockwise unscrew the air inlet ring, take out the filter and
clean it completely, finally, remount it to the unit.
Before shutting the system off for a long time, please:
Shut off the power supply;
Release all the water in water tank and the pipeline and close
all the valves;
Check the inner components regularly.
8.2 Recommended regular maintenance table
8.1 Maintenance
Turn off the power, and turn off the water inlet valve.
Open hot water tap, and decrease the pressure of the inner
container.
Open the drainage valve, and drain out the water, until there are
no water flow out.
Get off the anode rod.
Replace with a new one, and make sure effective sealed.
Open cold water inlet tap untill water flows out from outlet tap,
then turn of water outlet tap.
Power on then restart the unit.
Model: HWHM-TDF190/1.5-H31, HWHM-TDF300/3.5(E)-H31
Model: HWHM-TNF190/1.5-H31
How to change the anode rod
Anode Rod
Anode Rod
Checking
Item
Checking
content
Checking frequency
Action
1
air filter
(inlet/outlet)
every month
Clean the filter
2
anode rod
every half year
Replace it if it has
been used out
3
inner tank
every half year
Clean the tank
4
5
E-heater
every half year
Clean E-heater
Operate the
hander of PT
valve to ensure
that waterways
are clear.
PT valve
If water doesn't flow freely when operating the
hander, replace PT valve with a new one
every year
Table 8-1
Fig.8-1
If install the unit at outdoor and in the district with lower than 0
temperature, please do heat insulation for the water pipes, if it is
needed, please install the pipe heating device for avoiding the
pipeline to be frozen.
How to Take Off The Air Filter
Get off the top cover,
and take off the filter
Counter clockwise
rotate top cover
When install the top cover please refer to the
direction of arrow, after assembling it should be
alignment state.
NOTE
