Please could I benefit from the experience of the forum answering this question?
18 months ago we changed to a biomass heating system which heats a large internal tank in tank, from which we draw DHW from the inner tank and CH from the primary circuit
I retained my elderly Worcester 350 to act as a back up system boiler having rerouted the DHW to the new tank. It has now expired.
The back up is only used if the biomass boiler is down so that we always have DHW and CH. Just like a car I presume boilers like being used regularly but in our case we would only perhaps be putting it on for a few hours each month to keep that part of the system ticking over and ensure if called upon it could take over from the biomass.
I am looking for a 30KW (approx) system boiler for this function. Is there a model/brand that is particularly good or indeed bad for such intermittent use.
Thank you in advance for any helpful replies
18 months ago we changed to a biomass heating system which heats a large internal tank in tank, from which we draw DHW from the inner tank and CH from the primary circuit
I retained my elderly Worcester 350 to act as a back up system boiler having rerouted the DHW to the new tank. It has now expired.
The back up is only used if the biomass boiler is down so that we always have DHW and CH. Just like a car I presume boilers like being used regularly but in our case we would only perhaps be putting it on for a few hours each month to keep that part of the system ticking over and ensure if called upon it could take over from the biomass.
I am looking for a 30KW (approx) system boiler for this function. Is there a model/brand that is particularly good or indeed bad for such intermittent use.
Thank you in advance for any helpful replies