Operating instructions
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Main Screen
After 20 seconds the heater will default back to the Main 
Screen. Here the chosen temperature is displayed along 
with Comfort On or Comfort Off, which tells you whether 
you are in a timed heating period or not. Any use of the 
Advance function will be displayed here, and pressing the 
Selector Dial will show the Timer Mode in use.
When left inactive for a long period of time this display 
will ‘sleep’ and the text will disappear. Press the Selector 
Dial for its return.
Advance
A supplemental heating (boost) element controlled by the 
electronic thermostat is provided in case additional room 
heating is required. This will operate only by selecting 
‘Advance’ and then selecting Boost Periods 1 hour, 2 
hours, 3 hours, 4 hours. 
Note: The boost element will only activate if the level 
of stored energy is less than 50%.
Use this function only if you require a room temperature 
that is greater than what can be achieved using the 
stored energy alone. For example, when pressing 
‘Advance’ in the evening on a very cold day.
NOTE ONCE MODIFIED A PROGRAMME 
MUST THEN BE SELECTED IF YOU WANT TO 
BEGIN USING IT.
21°C
Comfort On
NOTE BOOST PERIODS CAN ONLY BE 
SELECTED WHEN IN ‘COMFORT OFF’ MODE










