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