thermostat boiler settings - what do they do/affect?

riz1 · 2004-12-06T16:33:10+00:00

the thermostat "under my heater" for the boiler has setings Lo/1-4/Hi.After the last annual service i note that i has been set to hi whereasas it used to be 2-3.I have thermostatic valves on most radiators but i find that if thecentral heating is on for a while [ie allnight during the recent coldsnap] and all the house is hot, even if the temp is higher than theroom-thermostat-temp the boiler is still "on".the hot water is also very hot so i dont see why that would cause theneed for conitnued curning.i turned the boiler thermostat down to 2 and it stopped immediately andsince then the house is as hot as it was before and the water is as hotas before so what does this boiler-thermostat setting affect? can i notjust turn it down to 1 or low?[apologies for the wordy post but icouldnt explain my confusion succinctly]

Dec 06, 2004 20 Replies

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W 21 years ago

would be suitable for a fully pumped system.

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thermostat boiler settings - what do they do/affect?

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