Operating instructions S-HR series page
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Program keys with indication lights
Press this key in order to turn on and off the central heating program. This program will become active when the
key is pushed and the
indication light is illuminated. In this case the boiler will activate the burner when the room thermostat is calling for heat.
Press this key in order to turn on and off the hot water program. This function only works in the case of an boiler on which a hot water facility
is connected. This programm will become active when the
key is pushed and the indication light is illuminated. In this case the boiler
will activate the burner when the calorifier thermostat is calling for heat.
Press this key in order to let the circulation pump circulate according to the automatic switch program or continually via the central heating
installation. The circulation pump will circulate continually via the central heating installation when the key
is pushed and the indication
light is illuminated. In most situations the program can stay on automatic, so that the circulation pump starts functioning as desired for central
heating or hot water. If an outside sensor is connected to the unit the pump will start automatically in case of a low outside temperature in
order to reduce the
chance of freezing.
At severe frost:
It is possible when there is no outstide sensor connected, to choose manually to let the circulation pump
circulate continually to reduce the chance of freezing in the case when there are pipes (garage, attic or other
cold spaces / rooms) which are sensitive to frost.
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