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FUNCTION OF THE HEATER:
Water heating by electric energy
Once connected to the electric grid (230V AC), the heater is ready to heat water.
Even in the case of water
heating using only DC current, it is necessary to connect the heater to the electrical grid (230V). Electricity
consumption from the network is minimal when the T1 thermostat is off, and represents a value of 0.0039
kW.
To heat water using DC current from photovoltaic panels, the desired temperature has to be set on
thermostat T2. When the sun is shining, the panels produce current, which heats the heating spiral of the
water heater. The switching on and off of spiral heating is controlled by thermostats.
The thermostats can be set as needed within the range of 5°C to 74°C. We recommend setting the water
temperature while heating with DC to a maximum temperature of 70°C. This temperature ensures the
optimal utilisation of the electric source from photovoltaic panels.
After reaching the set temperature, the thermostat switches off the electricity supply and
discontinues water heating.
The orange control light
indicates that the device is in operation. If it is on, the device is running.
If it goes off, the device is out of service.
The green control light
signalizes the input of the direct current from the photovoltaic panels. If
it is on, the panels are producing electrical energy.
Heating water by means of AC current from network is indicated by a red control light.
If it
goes off, heating of water by AC current is off.
Caution! Water heated to 70°C is very warm to the touch. To use it, it has to be mixed with
cold water.
The manufacturer recommends mounting of a mixing valve to the hot water outlet and setting
a maximum temperature on thermostat T2. On sunny days the temperature in the heater can
achieve up to 90°C, which is a temperature that, in case of scalding, may cause health
complications. Output temperature suitable for general use shall be set on the mixing valve.
The closing valves of the tubular heat exchanger must be opened, which ensures heating water flow from the
hot water heating system. Along with a closing valve at the inlet to the heat exchanger, it is recommended to
install an air removal valve, in order to bleed the heat exchanger as needed, in particular before the
beginning of the heating season. The time it takes to heat up using the heat exchanger depends on the
temperature and flow of water in the hot water heating system. Combined heaters are made with a
universal design, i.e. the outlets of the exchanger exit at the rear of the heater, for cases when it is necessary
to either connect from the right or left.
