I have a gas warm air/water heating system. Last week I got the gas man in to service it and he reported a blocked flue and disconnected the equipment. Despite me phoning to chase him I can't get him to return my calls to say what to do about it.
I'm considering calling in a chimney sweep and then get another gas man to reconnect and retest.
But, I assume the burners (already disconnected) and heat exchangers will need to be removed before the sweep can get to work to prevent them being blocked with the sweeping. Is this something I can expect teh sweep to do, or would I have to do it/get it done first?
Also, the water heating uses a gravity fed system. Two pipes from the heat exchanger below to the tank above, but I can't see any connections for refilling (or indeed, venting). Is this possible? or must there be something hidden under the floorboards in the bathroom (the only part of the system I can't access)? If not, I have no idea how I would set about refilling it. (BTW the house was built in 1984).