Hello there, av got me self a new house, with a ferroli combi boiler installed , it looks like an old one.No probs with the rads but it takes yonks to fill the bath. The pressure is on No 1 would adding more water to the system raising the pressure to say No 2 make the water in the bath come out any faster. Or am i diceing with death
Boiler pressure
- Thread starter plasterer
- Start date
Sponsored Links
B
breezer
when you say The pressure is on No 1 are you sure thats not the temperature adjustment.
also what is the flow rate out of the taps (hot and cold) you can do this with a 1 litre jug, time how long it takes to fill it.
also what is the flow rate out of the taps (hot and cold) you can do this with a 1 litre jug, time how long it takes to fill it.
There are two seperate functions on a combi.
One relates to the central heating circuit, where the pipes and radiators hold water under pressure of about 1bar, this water is self contained, in theory it remains in the circuit unless of course you have a leak or the pressure is increased or you drain it off.
The other function is mains cold water enters the boiler or passes through the boiler on its way to the hot water taps and is totally seperate from the heating water.
So the answer is, there is no point in increasing the pressure as it is not related.
Basically you are filling the bath under mains pressure but this pressure will be restricted in order for the cold water to gain heat in the heat exchanger. If it is an old boiler, the heat exchanger may have scale formed adding further restriction to the water flow.
This is just my opinion.
One relates to the central heating circuit, where the pipes and radiators hold water under pressure of about 1bar, this water is self contained, in theory it remains in the circuit unless of course you have a leak or the pressure is increased or you drain it off.
The other function is mains cold water enters the boiler or passes through the boiler on its way to the hot water taps and is totally seperate from the heating water.
So the answer is, there is no point in increasing the pressure as it is not related.
Basically you are filling the bath under mains pressure but this pressure will be restricted in order for the cold water to gain heat in the heat exchanger. If it is an old boiler, the heat exchanger may have scale formed adding further restriction to the water flow.
This is just my opinion.
Yes.
Not your's, but that of the expansion vessel. As Mandate says, the pressure has nothing to do with what comes out of the tap, but increasing the pressure will reduce the life of your expansion vessel.
Baths and combis are generally incompatible, and sometimes are made worse by scaling in the secondary heat exchanger.
If you're getting more than 9 litres/min out of the hot tap, be thankful, it could be worse. You can check it using a bucked and stopwatch.
Sponsored Links
B
breezer
oilman said:
i suggested a 1 litre jug, but i suppose a bucked will do (if only we knew what a bucked is)
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Similar threads
