Putting The Heater Into Operation; Servicing - Dražice OKCE 100 NTR/2,2kW Operating And Installation Manual

b) Service water heating via thermal energy through heat exchanger
Closing valves of the heat exchanger must be opened which ensures heating water flow from the hot water heating
system. Together with a closing valve, it is recommended to install an air outlet valve at the inlet to the heat exchanger in
order to bleed the heat exchanger (Fig. 2) as needed, in particular before the beginning of the heating season. The time of
heating using the heat exchanger depends on the temperature and flow of water in the hot water heating system. A combined
heater is made in universal design – depending on the need of connecting the closing valves to the heating element either from
the right, or from the left (Fig.2).
5.

PUTTING THE HEATER INTO OPERATION

After connecting a heater to the water main, the hot water heating system, the electric network, and after testing its
safety valve (based on the valve manual attached), the heater may be put into operation.
Procedure:
Check both water and electric installation; for combined heaters, check the installation to a hot water heating
a)
system. Check proper placement of operating and safety thermostat sensors. The sensors must be inserted all
the way in; first the thermostat and then the safety fuse.
b) Open the hot water valve on the combination faucet;
c) open the cold water inlet valve to the heater;
d) when the water starts flowing through the hot water valve, the filling of the heater is finished and the valve
needs to be closed;
e) Should a leak (of the flange lid) occur, we recommend tightening the screws of the flange lid;
f) Fasten the electric installation cover;
g) When heating service water heating by electric energy, turn on the electricity (for combined heaters, the
heating water inlet to the heating insert must be closed);
When heating the water with thermal energy from a hot water heating system, turn off the electricity and open
h)
the valves at the inlet and outlet of heating water or bleed the exchanger. When commencing operation, flush
the heater until the cloudiness in the water is gone.
i) Make sure to fill in properly the warranty certificate.
5.

SERVICING

Service devices of heaters of 80 to 200 l capacity are located under the transparent guard of the control panel.
Thermostat knob Indicator - Boost heating Lamp switching circuit
4
Thermostat knob