Is it worth altering the water temperature dial spring/autumn to winter?

[ericmark]

I have read about weather compensation, and it seems it alters the circulating water temperature, which I can see helps with a modern boiler. But what about with a non condensing, non modulating boiler? There is a large dial on the front to adjust the circulating water temperature, why?

I see that the hotter the circulating water, the faster a room will heat up, so the latter a temperature change can be left, so if a room is allowed to cool to 16°C overnight and is wanted to be at 20°C during the day, and 22°C in the evening, the hotter the water, the latter the change can be made, so with no hysteresis the hotter the water the better.

But there will be some hysteresis, and the lower the circulating water temperature, the less hysteresis.

OK, that's the theory, but in practice what difference does the temperature of circulating water make? I see it will impact on the DHW, the boiler will heat the water, and if this is hotter to the immersion heater setting, then it will not use any solar to heat water on a sunny day, but winter we do not get many days when electric is exported, so not many days when the immersion would switch on, but it would switch on enough times to remove the risk of legionnaires.

So should the temperature dial be altered spring/autumn to winter?

 

[Harry Bloomfield]

So should the temperature dial be altered spring/autumn to winter?

My own control install, is entirely automatically compensated, dependent on the outdoor, indoor temperature, and the measured actual, verus desired temperature - heating CH versus HW separately, at different temperatures. I suspect it saves me quite a lot, but the big advantage is comfort. the cooler CH temperatures, longer, slower burns, reduced swings in room temperatures, much less noise from pipes, and radiators heating and cooling.