ive recently had a new ideal isar he35 fitted, the user instructions say 'set the boiler thermostat to maximum and switch on' my question is what would be the most economical way to run this type of boiler? i presume on the maximum setting the boiler throws the heat out until the room thermostat switches it off, if however the boiler thermostat is set to a mid position would the boiler switch itself on and off until the room thermostat was satisfied? if this is correct which method would be most economical in terms of gas usage and boiler wear and tear
thanks in advance
andyd