Ideal vogue maxc32 efficiency level

[John.g]

If your's is a combi can you look at this efficiency with the DHW selected at its lowest.

 

[Grollo]

Temperature the heating is set to 70?

I had an Ideal Logic + fitted in early September and the flow temperature was set at 70*C. After Christmas I experimented with the temperature and set it at 60*C that gives me a return of 50*C. I’ve been recording the Super Efficiency figure for a week and it’s increasing almost daily from 28% and is now 35%. It now looks like percentage figure is a ratio of time the boiler is operating in Super Efficiency and total time. I’m guessing the 28% I started with was the best efficiency at start up and dropped off as the circulating water return reached a point when it stopped condensing.

 

[TheFifeFlyer]

I asked Ideal Tech` this question a couple of years ago

Hi

I have an Ideal Vogue Gen 2 C40 combi, installed around a year ago.

In the beginning, the efficiency level was more or less at 100%, it`s now 50%. The pressure is at 1.2 bar. Heating at 55c and water at 54c. I`ve dropped the heating temp since it`s summer. But overall, nothing has changed from installation time.



And got this reply

Good afternoon

Thank you for your enquiry. The efficiency level shown is not the overall efficiency of the boiler, it is the amount of time the boiler has run from new (as a percentage) in it’s super efficiency level. The figure will rise or fall. We recommend the heating temperature to be set around 70 degrees C on the boiler for increased efficiency.

Now sitting on 37%

 

[John.g]

Thank you for your enquiry. The efficiency level shown is not the overall efficiency of the boiler, it is the amount of time the boiler has run from new (as a percentage) in it’s super efficiency level. The figure will rise or fall. We recommend the heating temperature to be set around 70 degrees C on the boiler for increased efficiency.

Now sitting on 37%

As a percentage of what I wonder, if its the percentage firing time then 37% would seem that this boiler is cycling on/off quite a lot? but might be the % modulation?.

 

[Chuck]

As a percentage of what I wonder, if its the percentage firing time then 37% would seem that this boiler is cycling on/off quite a lot? but might be the % modulation?.

It's the fraction of 'firing time' that the boiler has spent operating in condensing ('super efficiency') mode, i.e. with the return temperature below some unspecified threshold that is presumably around 50°C. It doesn't tell you anything about 'cycling on/off' or '% modulation'.

 

[TheFifeFlyer]

Mines will cycle more than 'normal' I guess since it`s only used on manual, via Hive thermostat. We switch it on at normally 18-19c depending on the house/outside temps. We don`t have zones or timed settings. It`s left on 24/7 and the Hive is dropped to 12c instead of switching off at night.
I have the boiler heating set to 70c and drop it to 55-60c come Spring/Summer. I`m not sure if that`s the most efficient way for us to use the heating tho`.

 

[John.g]

It would be nice if they quantified or explained this better because the condensing effect only just kicks in at ~ 55C return temp, you would need to get the boiler return temperature down down to 45C get a reasonable condensing effect of say ~ 8% to give a boiler efficiency of 95% from ~ 87% at 55C.

 

[CMPropsvcs]

Temperature the heating is set to 70?

 

[CMPropsvcs]

Temp set to 65c

Ideal have said “depends on settings” but will be getting back in touch

 

[CMPropsvcs]

It’s just the lcd screen on the boiler itself. Temp is 65c for central heating.

 

[The Donut]

Old thread I know but thought peeps might like the response I got from their tech team , although not much of one it has to be said.
I asked if the definition was written anywhere , just for my interest because at the time I was just starting using Opentherm with the Google Nest.
My SEL has worked its way up to 93% over the year 22/23 , with flow return temps anywhere from 43/36 to 49/39.
Just for interest by my calcs OT uses around 16% less gas in my house by my calculations.
Anyway this is the , short , response I got .
Hope it's of use

D

 

[icstm1]

Old thread I know but thought peeps might like the response I got from their tech team , although not much of one it has to be said.
I asked if the definition was written anywhere , just for my interest because at the time I was just starting using Opentherm with the Google Nest.
My SEL has worked its way up to 93% over the year 22/23 , with flow return temps anywhere from 43/36 to 49/39.
Just for interest by my calcs OT uses around 16% less gas in my house by my calculations.
Anyway this is the , short , response I got .
Hope it's of use

D


View attachment 95216

Hi, thank you for taking the time to write to them. For some reason I cannot see the screenshot, just your uploaded filename. Can you please reshare?
I just moved into a home with an Ideal combi boiler and my %age is around 44%.

 

[John.g]

Hi, thank you for taking the time to write to them. For some reason I cannot see the screenshot, just your uploaded filename. Can you please reshare?
I just moved into a home with an Ideal combi boiler and my %age is around 44%.

This might be that response, its certainly one of their responses anyway.

 

[icstm1]

@John.g - thank you!

Is the 55°C the return temperature or the flow temp?
I'm assuming it cannot be the main boiler flow temp, as otherwise they would surely write the in manual that optimal temp HAS to be below 55°C.

 

[John.g]

@John.g - thank you!

Is the 55°C the return temperature or the flow temp?
I'm assuming it cannot be the main boiler flow temp, as otherwise they would surely write the in manual that optimal temp HAS to be below 55°C.

Its the boiler return temperature and condensing only begins at ~ 55C.