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Replacement Oil Burner Thermostat Does not fit!

Posted: Thu Jan 11, 2018 2:29 pm
by thetoilet
Hi all

first time poster. I have oil fired central heating. had a problem with hot water spilling out of the overflow from the header (gravity fed system). turns out the thermostat on the oil burner in the garage is at fault. (at least it seems so)

it is a 1980s boiler as far as I can see but works well enough. however, when trying to replace the thermostat, the original one has a single prog sticking out the back (the element) where new ones have 2. this means the new one will not fit into the pocket inside the boiler... anyone seen this before? can new pockets be bought or do I need to be looking for a single prong/element thermostat or a replacement boiler even?

cheers
dan