Not using DHW part of Oil Combi Boiler

mcbmx · 11 Jul 2008

Hello,

I'm looking to change my current combi oil boiler for a wood pellet boiler with heat storage tank. This is a tank-in-tank type with inner containing mains pressure hot water. I would like to keep my combi as backup, feeding into the heat storage tank. Does this sound possible, having the combi doing heating but not hot water?

Thanks

Nixt · 11 Jul 2008

Which model combi do you have?

mcbmx · 11 Jul 2008

Hi, it's a Grant Combi 70 Mk2 20kW

oilman · 11 Jul 2008

You can either just blank off the HW outlet, bu it would be better to disconnect the heatstore and all associated bits.

Nixt · 11 Jul 2008

mcbmx said:
Hi, it's a Grant Combi 70 Mk2 20kW

This boiler doesn't have a separate dhw store the main (and only) jacket primes continuously for hw production through DV and plate HE. You may have to find a way to fool/disconnect the store stat to stop it reheating itself after CH was satisfied.

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Not using DHW part of Oil Combi Boiler

mcbmx

Nixt

mcbmx

oilman

Nixt

DIYnot Local

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