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bit of programmer heol please
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<blockquote data-quote="ProDave" data-source="post: 248089" data-attributes="member: 6969"><p>Sounds like old gravity HW, pumped heating.</p><p></p><p>The BOILER thermostat sets the temperature that the hot water heats up to (and radiators heat to the same temperature).</p><p></p><p>Usually no room stat, so the house just gets hotter and hotter and it wastes a lot of fuel.</p><p></p><p>In theory, turning off the pump stops the heating, but in practice there's usually still enough gravity flow to heat the radiators a little, particularly upstairs radiators, hence the need to turn off the valves in the summer.</p><p></p><p>A very poor and outdated system and it really needs modernising with zone valves.</p></blockquote><p></p>
[QUOTE="ProDave, post: 248089, member: 6969"] Sounds like old gravity HW, pumped heating. The BOILER thermostat sets the temperature that the hot water heats up to (and radiators heat to the same temperature). Usually no room stat, so the house just gets hotter and hotter and it wastes a lot of fuel. In theory, turning off the pump stops the heating, but in practice there's usually still enough gravity flow to heat the radiators a little, particularly upstairs radiators, hence the need to turn off the valves in the summer. A very poor and outdated system and it really needs modernising with zone valves. [/QUOTE]
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bit of programmer heol please
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