Is it normal, on a combi boiler set up, for the hot water flow from any tap to drop off as you increase the flow from the adjacent cold water tap? Or is that the symptom of bad installation or even a problem somewhere. The system as a whole is probably no more than 2 years old at the most. The make of boiler is not one I'm familiar with but cannot recall the name here at work (It has enough flashing LEDs at the bottom to take a part time job in a disco).
The reason I ask is that the new place I've bought has an electric shower which is feeble and I want power! So I bought a mixer unit (for use with combi boilers it says on the box) but can foresee a load of fiddling with the temp and flow controls just to get a decent shower.
The alternative, apart from a new boiler and hot water tank system, is to install a separate hot water tank just for the shower. I'd have to heat this with an immersion heater but it would be worth it to get that elusive decent shower. If I went for a hot water tank (which I'd have to buy anyway if I switched boilers) I'd need to have a vent. What would be the best way to do that, non return valve and short copper stub into the loft space (where the tank would be anyway) or is there another way it's usually done?
Appreciate any responses,
Thanks,
Jon.[/i]
The reason I ask is that the new place I've bought has an electric shower which is feeble and I want power! So I bought a mixer unit (for use with combi boilers it says on the box) but can foresee a load of fiddling with the temp and flow controls just to get a decent shower.
The alternative, apart from a new boiler and hot water tank system, is to install a separate hot water tank just for the shower. I'd have to heat this with an immersion heater but it would be worth it to get that elusive decent shower. If I went for a hot water tank (which I'd have to buy anyway if I switched boilers) I'd need to have a vent. What would be the best way to do that, non return valve and short copper stub into the loft space (where the tank would be anyway) or is there another way it's usually done?
Appreciate any responses,
Thanks,
Jon.[/i]