Hot water not very hot

mikeb222

Hi,

I have a Modena c he Ferroli boiler, fairly new.

The Domestic Hot Water is set at 55c but when I run the water it's coming out at 43c and it's not even hot enough for a bath.

55c is the highest I can set it, so anyone any ideas what could be wrong?

Ruski

Nowt wrong with it, 'tis the low incoming water temperature which the boiler is fighting against. Turn the tap to a slower flow and you'll get hotter water.

HTH

Russ

Norman_Castle

If I put my hand under the bath tap the water never felt particularly hot but when the bath was full it was too hot and needed cooling with cold water. Have you tried filling the bath?.

Ectophile

Check to see if there's a valve on the inlet to the boiler. If there is, turn it down a bit at a time until the water is acceptably hot. Failing that, just don't turn the hot tap on full.

At this time of year, the incoming mains water is really cold, and the boiler just can't heat it up as fast as you want. It may be even worse in January. By next summer, you'll be getting really hot water again.

C_Mababejive

Combis..who'd have em... Have you had someone out to check it and/or service it?

mikeb222

Ruski wrote: »

Nowt wrong with it, 'tis the low incoming water temperature which the boiler is fighting against. Turn the tap to a slower flow and you'll get hotter water.

HTH

Russ

Lol, it worked. Turned the tap down a bit and bingo! 10 degrees hotter at 55.
I know i'm a bit thick at times but I never knew that.
You gotta laugh!

Thanks dude

mikeb222

Just one more thing.

I just struggle with boilers as I'm a bit thick!

When the cold water enters the system, how the heck does the boiler heat the water so quick?

I understood it when I had a hot water tank as it was obviously heating the cold water like a kettle I thought, but just can't understand this new boiler.
Simply amazing!

You know that thread where folk put their "things that amaze me", well this is one of mine. I think Martin's was "that Aeroplanes actually fly"
Mine's "That Boilers can heat water in a micro second"

I also don't understand....
Car's parking for you
Massive ships that still float
TV pictures from other side of world
Government debt
Women

Gordon_Hose

It's witchcraft...

bridgedino

mikeb222 wrote: »

Just one more thing.

I just struggle with boilers as I'm a bit thick!

When the cold water enters the system, how the heck does the boiler heat the water so quick?

I understood it when I had a hot water tank as it was obviously heating the cold water like a kettle I thought, but just can't understand this new boiler.
Simply amazing

Flames heat up the water as it passes through a heat exchanger

mikeb222

bridgedino wrote: »

mikeb222 wrote: »

Flames heat up the water as it passes through a heat exchanger

Cor!

cyclonebri1

It is in effect an instantaneous water heater.

The boiler puts full effort, scorching in effect, into heating the slow flow of water.

The flow governs the output temp and the volumetric temp.

On average the boiler will give 20% more input into HW than it will into heating the house when required, that's the principal, supply on demand.