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British Gas 330 boiler modulating protocol

View the thread, titled "British Gas 330 boiler modulating protocol" which is posted in Boiler Advice Forum on UK Plumbers Forums.

Hi all,

Just moved into a house with a British Gas 330 boiler and would like to fit a modulating smart thermostat.
Does anyone know what modulation protocol it uses?
I've googled, checked the manufacturer's website ( Glowworm ) but with no luck.

Boiler ID GC 41-047-75

Thanks!
 

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