This is another installation example of a situation where it is requested that we fit a new high efficiency boiler to an old chimney stack.
We are in the town of Sevenoaks, Kent (UK) where there is a 35 year old floor standing Potterton boiler in the breakfast room, using a flue passing inside a brick chimney.
We specified a Viessmann Compact WB1B 26Kw unit, with a sealed system chimney liner. This allowed us to install a room-sealed boiler using the stack for exhaust and fresh air inlet.
We removed the old boiler, rationalised the pipework. The customer then had the chimney swept, we installed a scaffold tower outside and fitted the Viessmann flue lining and termination kit.
Job done, a 30% improvement in boiler efficiency – and the house was unchanged. Every other ‘gas specialist’ the customer had round said it couldn’t be done. They should get out more!