I've just bought a modern shower cubicle with an large overhead jet, and several side ones. The problem is we have a combi boiler which doesn't produce a strong enough flow to make a suffiecinet hot feed. I am unsure if a pump would help as the boiler might struggle to heat the water as quick as the pump pulls it.
Someone suggested a seperate hot water tank (we live in a bungalow so the only place is the loft) to use for the feed, along with a pump. We have good pressure on the cold rising.
Can anyone help???
Yeah, combi's without sufficient pressure are a problem with showers. :cry:
Fitting a pump would not work as it will draw water to fast from the boiler to be effective.
Putting a tank into the loft is not on as you will also need an immersion cylinder to store the hot water as well.
This will not work well with a combi boiler as they are not made for that type of system.
I had the same problem in my house, I only cured it by fitting a very large boiler.
The pressure in the hot and cold should be the same as far as I know, with a pressure valve fitted on the cold supply to the boiler to cap it at about 2.5 bar.
With small boilers and large mixer showers with all the bells and whistles a high output combi is required.
thanks for that arnak. so short of buying an expensive new boiler i'm stuck! I thought a dedicated immersion tank in the loft might be a cheaper option. do you know if building regs allow an immersion in the loft?
thanks for that Arnak.
So short of buying an expensive big boiler i'm stuck!
I thought a dedicated immesion (not on the CH system) might be the cheaper option?
Do you know if building regs allow an immersion in the loft?