Boiler water temp

worrywart_3

Ultrasonic said:

worrywart_3 said:

Excuse my ignorance I have hot water and heating temperature dials should both be on 50

The two don't need to be the same. Do you have a combi-boiler? If so set the hot water temperature to whatever you need it to be for actual use. For me it's the shower that is the limiting factor, with too low a flow temperature meaning I can't achieve a shower water pressure I'm happy with (achieved with a mix of hot and cold water). My hot water is set to 50° C with this in mind but you might find cooler works OK for you.

Yes have set the water to 50 and still perfectly hot enough for shower the other one is the one with the picture of radiators next to it has e setting which is about 70 is it more economical to have this about 50 as well. Thanks 😊 

Ultrasonic

worrywart_3 said:

the other one is the one with the picture of radiators next to it has e setting which is about 70 is it more economical to have this about 50 as well. Thanks 😊 

Probably, yes. But the radiators won't get as hot and so they will warm rooms up slower. The logic is the boiler will be more efficient but we're only talking a ballpark 5% increase so don't expect a dramatic difference.

SJMALBA

Ultrasonic said:

SJMALBA said:

on my boiler shows 'requested flow temp' and 'actual flow temp' - as far as I can tell, the former changes as necessary up to the maximum allowed by the bolier heating control?

Isn't that just reflecting that it takes time to heat water up to the set temperature, rather than a form of optimisation?

My boiler heats the heating hot water up to about 5°C above the set flow temperature before turning the burners off.

I don't think so, but I'm not an expert on such things.

As it happens, one day recently, the system didn't seem to be operating normally, so I did a reset on the boiler, which seemed to get things working again, but I kept a close eye on things over the next few days, inc. checking requested/actual flow temps at various times.

For example, one day, while bringing the room temp up to the set desired level, and when it was close to achieving it, the requested flow temp was (IIRC) 52C, actual 40C (burners not on when I happened to check), whereas earlier, when maximum room temp rise was required, it was requesting 75C.

On another day, having achieved, & maintained for some hours, the desired room temp, an external door was opened, allowing cold air in, dropping the room temp below the desired level; when checked, the requested flow temp was 75C, actual 42C (before the burners came on) etc.

The requested, & actual, flow temps varied at various other times when checked over that few days of monitoring, depending on the stages of heating, actual room temp etc.

Maybe the heating system isn't working correctly?, but it seems to be doing what is required of it (with the exception of the specific day above), but, as I say, not an expert, so maybe I'm misunderstanding things?

I have followed the instructions & tips in the boiler manual, as shown previously, though...

BUFF

SJMALBA said:

I was referencing both the 'Heating economically' & 'Tips on Energy Saving' sections of the screenshot from the manual - the text display programmer (TD200) on my boiler shows 'requested flow temp' and 'actual flow temp' - as far as I can tell, the former changes as necessary up to the maximum allowed by the bolier heating control? It is used in connection with a room thermostat (RT10), so, as mentioned, the system decides... I think?

I am going to presume that you have a Worcester boiler? If so the RT10/TD200/Heatronic 3 combo is bus-enabled & has optimum start - it's a fairly sophisticated set up. Only improvement available really would be if it also had weather compensation.

SJMALBA

BUFF said:

SJMALBA said:

I was referencing both the 'Heating economically' & 'Tips on Energy Saving' sections of the screenshot from the manual - the text display programmer (TD200) on my boiler shows 'requested flow temp' and 'actual flow temp' - as far as I can tell, the former changes as necessary up to the maximum allowed by the bolier heating control? It is used in connection with a room thermostat (RT10), so, as mentioned, the system decides... I think?

I am going to presume that you have a Worcester boiler? If so the RT10/TD200/Heatronic 3 combo is bus-enabled & has optimum start - it's a fairly sophisticated set up. Only improvement available really would be if it also had weather compensation.

Correct, it's a Worcester-Bosch.