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4.1 Automatic Control Features
1) if for some reason the heater did not start, the start-up process will be automatically
repeated. After two failed attempts the heater will be switched off;
2) if during the heater's operation burning is interrupted, the heater automatically re-
starts. Restarts after consecutive flameouts are performed up to three times;
3) in case of overheating of the heater coil (for example, due to blocked intake or output
of the heating unit), the heater is automatically switched off;
4) if the maximum temperature of the heated air is exceeded (for example, due to closed
outlet of the heating unit), the heater is automatically switched off;
5) if voltage drops below 20V (10V) or increases to more than 30V (16V), the heater
automatically switches off. The numbers in parentheses are for the heaters with the
nominal voltage of 12V;
6) if the heater switches off due to an emergency situation, a malfunction code appears
on the control panel. The malfunction code and the LED indicating the operation mode
will be blinking.
7) in case one of the temperature sensors is faulty, the heater will not launch and a
malfunction code will appear on the control panel.
5 Installation of air ducts.
The air for heating must be taken from clean space protected from rain, splashes, dirt,
water and without exhaust gases. Never draw air from the engine compartment.
Fresh air from outside or recirculated air from rooms can be taken for heating.
- Intake of fresh air.
The air is taken from outside, heated and supplied to inner rooms. This operation
renews air in heated spaces and lowers humidity. Note locations of outlet vents in cabins
and make sure that their number is sufficient.
Air intake from outside can lead to loss of heating capacity, increase of
fuel and electrical power consumption. For safety reasons it is not
recommended, because of high risk of drawing exhaust gases (yours or
other vehicles’) in to the living spaces.
- Air intake from inner rooms.
In this case, heated air is taken from inner rooms. The advantage of such option is fast
heating due to better use of heat. However, this operation does not lower humidity, and the
air in the heated spaces is not renewed.
Use only thermally stable air ducts, designed for operation temperature up
to 130°C, to lay channels for heater air!
Heat insulation is necessary to reduce heat losses, when laying air ducts
through the rooms or spaces that do not need heating, for example when
installing ducts over or nearby batteries.
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