Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

View the thread, titled "Swapping K1 radiator to a bigger P+ one" which is posted in UK Plumbers Forums on UK Plumbers Forums.

I want to swap a K1 radiator with a P+, the same size on a combi system. Can i turn off both valves, remove the existing radiator, put the new one on the existing brackets, and reconnect the existing valves, and then top up. Would draining the entire system be necessary? If draining is not necessary would i have to add inhibitor to the system if i just replaced the radiator as i have suggested. Obviously from the question you can see i am a diyer.
 
In theory you can replace without new brackets and/or pipework adjustment. However as the radiators will be different depths it is unlikely to be that straightforward as the pipework will be a different distance from the wall.

I would use the new brackets, fit the new radiator tails, then adjust the pipework and valves to suit. Possibly repacing the valves dependent on condition. I would put some more inhibitor in, if you know which type is already installed. If any of the water looks dirty, I would flush the whole system and refill with inhibitor. You will have to make that decision when you know what condition yours is in.
 
Amount of play depends on the route of the pipework and whether it’s plastic or copper.
If it’s copper coming out of a concrete floor - very little play. If it has run along the wall on top of the skirting board, then yes you can probably connect it with no alteration.
You just have to see how much play you have.
 

Official Sponsors of Plumbers Talk

Reply to the thread, titled "Swapping K1 radiator to a bigger P+ one" which is posted in UK Plumbers Forums on Plumbers Forums.

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.

Weekly or Monthly Email Digest

Back
Top