Replumbing radiators
Discussion
Hi,
On Christmas Eve last year my rads downstairs froze and burst. I bypassed them and have been using just the ones upstairs since.
I didn't want to have to rip the floors up at Christmas you see.
Anyway, now that the weather is warm I've got next week to sort them, the under-drawings on my house are very shallow so I'll have to pull up the floorboards.
It was plumbed using microbore copper (upstairs still is) using a manifold to provide the send and return to each rad there are 3 rads downstairs (5 upstairs) and I want to only have to do this once so the plan is to replace all the pipework downstairs and lag it properly, rather than just find the burst bit and fix it.
Currently there is a 22mm feed from the boiler upstairs that supplies the circuit upstairs and the one down.
My plan was to create a feed and return pipe rather than use the manifold approach using 15mm pipe with a pressure relief valve (this means I can install stats on the rads too).
My concern with this though is that as upstairs will still be microbore it could cause issues with not being balanced. Don't really want to have to pull the floor up upstairs too.
Any advice would be appreciated.
On Christmas Eve last year my rads downstairs froze and burst. I bypassed them and have been using just the ones upstairs since.
I didn't want to have to rip the floors up at Christmas you see.
Anyway, now that the weather is warm I've got next week to sort them, the under-drawings on my house are very shallow so I'll have to pull up the floorboards.
It was plumbed using microbore copper (upstairs still is) using a manifold to provide the send and return to each rad there are 3 rads downstairs (5 upstairs) and I want to only have to do this once so the plan is to replace all the pipework downstairs and lag it properly, rather than just find the burst bit and fix it.
Currently there is a 22mm feed from the boiler upstairs that supplies the circuit upstairs and the one down.
My plan was to create a feed and return pipe rather than use the manifold approach using 15mm pipe with a pressure relief valve (this means I can install stats on the rads too).
My concern with this though is that as upstairs will still be microbore it could cause issues with not being balanced. Don't really want to have to pull the floor up upstairs too.
Any advice would be appreciated.
Shouldn't be a problem.
I think I'd be tempted to drop pipes from above in trunking rather than connect underneath the floor.
Although I appreciate you may not want pipework on show.
I'd definitely consider putting a frost stat under the floor, so it fires up the heating when the temperature get near freezing
I think I'd be tempted to drop pipes from above in trunking rather than connect underneath the floor.
Although I appreciate you may not want pipework on show.
I'd definitely consider putting a frost stat under the floor, so it fires up the heating when the temperature get near freezing
dirkgently said:
Microbore works on higher pump pressures than small bore heating. In reality you probably wont have any problems on a small system, but I think I would split the system into two zones and have a separate pump for each.
Splitting my combi to use two pumps that way would probably be more involved than replumbing the 5 rads upstairs so it was all the same.Gassing Station | Homes, Gardens and DIY | Top of Page | What's New | My Stuff