- Joined
- 23 Sep 2023
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As in the title, having issues with hot water since changing pipes.
The house I'm in used to have a gravity fed system, but was replaced with a modern combi at some point (Baxi platinum) .
Combi hot outlet is 28mm. It used to run all the through the airing cupboard, converting to 15mm on the way up, do the loop around the loft (without being connected to anything up there anymore) and come back down at 22m. It needed to be moved for a project.
I've cut out the loop to the loft and ran a new 15mm pipe (plastic) straight to the back of the bathroom where it currently Ts off to feed the sink (22mm original pipework, reduces later), and the kitchen (15mm). Eventually I'll run a more direct route to the kitchen and redo the 22mm sink run to 15mm, but can't until other work is done in the bathroom).
There doesn't seem to be any leaks, flow rate is decent at 10l / min roughly, but much less than the cold water. The boiler does not recognise the hot water being on (no light activating, no errors) and the water at the boiler is making a bit of a wooshing sound (boiler on or off). Only thing I can think of is air trapped in the system (hearing some noises at that T to the sink and kitchen, same at the reduction from 28mm to 15mm) or doing this has shaken up some rubbish in the pipes settled from the old gravity fed system. I've tried refilling gradually a few times but no luck. I'd try the hose method but don't currently have a way to attach one to the taps. Any advice appreciated.
Cold water pipes are connected in exactly the same way with the same fittings, except they don't connect to any older 22mm pipework. They are fine. Lots of pressure (possibly too much).
The house I'm in used to have a gravity fed system, but was replaced with a modern combi at some point (Baxi platinum) .
Combi hot outlet is 28mm. It used to run all the through the airing cupboard, converting to 15mm on the way up, do the loop around the loft (without being connected to anything up there anymore) and come back down at 22m. It needed to be moved for a project.
I've cut out the loop to the loft and ran a new 15mm pipe (plastic) straight to the back of the bathroom where it currently Ts off to feed the sink (22mm original pipework, reduces later), and the kitchen (15mm). Eventually I'll run a more direct route to the kitchen and redo the 22mm sink run to 15mm, but can't until other work is done in the bathroom).
There doesn't seem to be any leaks, flow rate is decent at 10l / min roughly, but much less than the cold water. The boiler does not recognise the hot water being on (no light activating, no errors) and the water at the boiler is making a bit of a wooshing sound (boiler on or off). Only thing I can think of is air trapped in the system (hearing some noises at that T to the sink and kitchen, same at the reduction from 28mm to 15mm) or doing this has shaken up some rubbish in the pipes settled from the old gravity fed system. I've tried refilling gradually a few times but no luck. I'd try the hose method but don't currently have a way to attach one to the taps. Any advice appreciated.
Cold water pipes are connected in exactly the same way with the same fittings, except they don't connect to any older 22mm pipework. They are fine. Lots of pressure (possibly too much).
