Real world vs theoretical hot water temperatures

[TCCHeating]

Anyway back to the topic in hand @TCCHeating I noticed you completely avoided my question about the less than manual specified flow rate. You don't actually know do you? And you call me a muppet!

Do you mean this one?

What do you do if the flow rate isn't what is specified in the boiler manual?

The one that you answered yourself in the very next post!

If my boiler was achieving a 35 degree rise but only at 6 l/min then there would definitely be something wrong with it.

Ffs try and remember what you have said in previous posts before you hit the 'post button'

 

[jakeycrx85]

Anyway back to the topic in hand @TCCHeating I noticed you completely avoided my question about the less than manual specified flow rate. You don't actually know do you? And you call me a muppet!

Do you mean this one?

What do you do if the flow rate isn't what is specified in the boiler manual?

The one that you answered yourself in the very next post!

If my boiler was achieving a 35 degree rise but only at 6 l/min then there would definitely be something wrong with it.

Ffs try and remember what you have said in previous posts before you hit the 'post button'

Do you know how to work it out? If a muppet like me can work it out then surely you must know how to do it?

 

[Dan Robinson]

 

[TCCHeating]

Do you know how to work it out? If a muppet like me can work it out the surely you must know how to do it?

Have you carried out a gas rate?

As I've already said about 10 times I don't touch anything to do with gas

From one muppet to another.

How are you calculating it without a gas rate????

I might be a muppet! But any calculation would need this figure to be accurate

And you would need a pretty clever formula to be able to account for all boilers (se/he???) without modifying it for each individual boiler

 

[jakeycrx85]

Do you know how to work it out? If a muppet like me can work it out the surely you must know how to do it?

Have you carried out a gas rate?

As I've already said about 10 times I don't touch anything to do with gas

From one muppet to another.

How are you calculating it without a gas rate????

I might be a muppet! But any calculation would need this figure to be accurate

It's done from the KW rating of the boiler. It's the same formula the manufacturers use to calculate the flow rate for the 35 degree rise but just arranged differently

 

[jakeycrx85]

I've just realised Vaillant are lying about their 824. It's actually an 823 so that brings the expected temp rise down a bit which means my boiler is spot on.

The 831 and 837 are accurate to their names though.

 

[AGAS]

 

[Agile]

It's done from the KW rating of the boiler. It's the same formula the manufacturers use to calculate the flow rate for the 35 degree rise but just arranged differently

Don't you realise that part of checking a boiler's operation is seeing how much power it is consuming?

That is what the gas rating measurement is for.

Unless that is correct then none of the measurements on DHW flow and temperature have much significance except to indicate a fault.

Tony

 

[Dan Robinson]

My iDTEC sure as Hell isn't 2.2 litres. Barstewards. I want some of my 30 Grand back.

 

[jakeycrx85]

Don't you realise that part of checking a boiler's operation is seeing how much power it is consuming?

That is what the gas rating measurement is for.

Unless that is correct then none of the measurements on DHW flow and temperature have much significance except to indicate a fault.

Tony

How accurate would it be from doing it from the gas meter though?

 

[jakeycrx85]

My iDTEC sure as Hell isn't 2.2 litres. Barstewards. I want some of my 30 Grand back.

30K on a diesel Honda?! Wow

 

[AGAS]

How accurate would it be from doing it from the gas meter though?

believe it or not thats part of the checks we perform , why don't you rate yours ,

 

[AGAS]

do you have a smart meter ??

 

[jakeycrx85]

do you have a smart meter ??

No smart meter just a standard meter.

Does a poorly performing heat exchanger change the consumption? For example if the secondary heat exchanger was scaled up.

 

[AGAS]

we all don't just come in and put probe in flue and f**k off . YOU NEED THE GAS RATING