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I have attached images of two boiler dial settings I use on my 3 year old Worcester Bosch boiler. The setting showing a vertical line is what I am using at the moment. The dial set at 45 degrees has not been used for some time. The radiators feel quite hot but the house- a 4 bed semi detached- is taking 6/7 hours to get from 18.5 C to 21.0 C. The temp readings are from a thermostat located in a hallway.
The boiler dial does not give any indication of boiler temp and I'm not sure if there is an accepted position for efficient use, or is it a matter of turning the dial to far right for max output and therefore a faster increase in house temp.
The boiler dial does not give any indication of boiler temp and I'm not sure if there is an accepted position for efficient use, or is it a matter of turning the dial to far right for max output and therefore a faster increase in house temp.