ok, so have a 1930s bungalow which bought about a year ago. Going through some building work at the moment and with the ceilings off, it is best time to take a look at the plumbing.
About 3 yrs ago the boiler ( conventional type with hot water cylinder in the roof void) got replaced by a combi boiler ( Worcester Bosch 30Si I think ). But the water pressure is not good at all. When one cold water is running, others almost come to a drible. I know with the combi you get pressure issues, but I thought this was only for hot water and not cold ?
Looking at some of the pipe work, it seems that when they did the boiler, they just chopped and shaped and cut the pipes to whatever they needed without thinking about anything else.
So gonna be ripping out all the pipes and redo them in the proper organised way.
Questions I have:
1) Seems the main cold feed that goes in to the boiler and also Ts to the kitchen tap is 15mm. Is this normal?
2) The CH pipes coming out the boiler are 22mm but somewhere they get reduced to 15mm before going out to the rads. Again is this normal ?
3) there seems to be multiple stop cocks around the house and around the main feed coming in. I can see 1 outside before getting to the meter. THen I can see 2 more inside. BUt can't see what they are for as they are behind a kitchen unit. Will be ripping the unit out to see the pipe work. Again is this normal?
4) To make the pressure better, I am thinking about running 22mm pipes everywhere and then reduce to 15mm just before they go into taps/sinks and ... , is this ok to be done?
Thanks for all the advice.
About 3 yrs ago the boiler ( conventional type with hot water cylinder in the roof void) got replaced by a combi boiler ( Worcester Bosch 30Si I think ). But the water pressure is not good at all. When one cold water is running, others almost come to a drible. I know with the combi you get pressure issues, but I thought this was only for hot water and not cold ?
Looking at some of the pipe work, it seems that when they did the boiler, they just chopped and shaped and cut the pipes to whatever they needed without thinking about anything else.
So gonna be ripping out all the pipes and redo them in the proper organised way.
Questions I have:
1) Seems the main cold feed that goes in to the boiler and also Ts to the kitchen tap is 15mm. Is this normal?
2) The CH pipes coming out the boiler are 22mm but somewhere they get reduced to 15mm before going out to the rads. Again is this normal ?
3) there seems to be multiple stop cocks around the house and around the main feed coming in. I can see 1 outside before getting to the meter. THen I can see 2 more inside. BUt can't see what they are for as they are behind a kitchen unit. Will be ripping the unit out to see the pipe work. Again is this normal?
4) To make the pressure better, I am thinking about running 22mm pipes everywhere and then reduce to 15mm just before they go into taps/sinks and ... , is this ok to be done?
Thanks for all the advice.