Bosch Worcester 37CD1comb- Rad remove, refit & refill in

15 Aug 2009
Reaction score
United Kingdom
Hi all
My c/h'ng is just over a yr old. I have removed a rad to decorate.
1.Please advise on how to replanish inhibitor and which one i should use.
2. How do i rebuild pressure on refitting rad
Many Thanks Ash
Sponsored Links
is it a closed or vented system? that is to say - combi boiler or tank in the loft and a hot water cylinder somewhere.

vented can be poured into the loft tank as it is refilled, but as you mention pressure, it's probably combi so it goes in through an upstairs rad (towel rails are good as the plugs are often on top) carefully funneled into the end plug on a normal rad (if there is one) or pumped into the filling loop with a kit like a rapid dose. pressure is restored by opening the filling loop till the pressure is up at say 2 bar, then bleeding all the rads and topping the pressure to the region of 1 to 1.5 bar
See FAQ's for advice on filling a system with a filling loop or a WB internal charge key. Better still your MI's.

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

Sponsored Links