keithgillyon wrote: »
...with regard to what i said i wasn't talking about combi's i was talking as were you about a conventional cylinder & roof tanks, a gravity system doesn't pump the hot water from the boiler around the cylinder this is done by gravity the clue is in the name, it is only the heating side that is pumped & for that reason you don't have a cylinder stat & the hot water is always on when the heating is,
DVardysShadow wrote: »
Sometimes cylinder thermostats are installed which don't really control the temperature in a meaningful way. Typically, the hot water cylinder runs on gravity circulation and the thermostat cuts the boiler off when temperature is reached - but only in the summer months with HW only selected. In the winter, the boiler runs anyway, because CH+HW is selected and the cylinder thermostat does not cut off the boiler.
Essential Money | Who & Where are you? | Work & Benefits | Household and travel | Shopping & Freebies | About MSE | The MoneySavers Arms | Covid-19 & Coronavirus Support