5
User’s operating instructions
Domestic hot water temperature control
Through this knob it is possible to allow the preparation of the storage tank and to adjust the
temperature of the domestic hot water:
With the pointer of the knob positioned in the range shown beside it is possible to adjust the
temperature of the domestic hot water. The adjustment range is between a minimum of 25°C and
a maximum of 60°C.
If the rotating switch is in the position
, the D.H.W. circuit is not in operation (in this case no warm water is available).
If, in the mean time, the rotating switch (A) is in the position (B)
, the antifreeze function of the storage tank is
activated.
F button
ATTENTION!
Function not active for boilers with domestic hot water production by storage tank.
Power On indicator led
This led will illuminate when the boiler is connected to the electricity supply
Central heating mode indicator led
This led will illuminate when there is a request for central heating. If simultaneously there is a request for
domestic hot water production, the led will switch off.
Burner On indicator led
When this led is illuminated it indicates that the burner is functioning correctly, both in central heating request
mode and in domestic hot water production mode.
Lock-out indicator led
When this led is illuminated it indicates that the burner’s safety cut-off device has shut-down the boiler.
Reset key
The function of this key is to reset correct boiler operation after the cut-off device has shutdown the boiler (red
led indicator illuminated)
If the cut-off device operates more than 3 times, causing boiler shutdown, do not try to reset the boiler
yourself. Contact your nearest VIADRUS authorized After Sales Service Centre.
Summary of Contents for ViaKON 24 B
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