Fitting TRV Valves

[tigerstyle]

So next job is to fit some TRVs ready for winter, I've looked at a few youtube guides, and it seems easy enough.

Is it just a case of draining down the whole system (already found my drain port, nicely placed by the back door) buying a load of them and going for it?

Worth taking the rads of and flushing them at the same time? 20 year old system and don't think it's ever been 'powerflushed'

Then bottle of inhibitor poured in before closing up the system, and stupid question, how do you refill it? I didn't google that part yet!

 

[tigerstyle]

ahhh one video had a section afterwards on balancing your rads/system afterwards, thats a totally different kettle of fish isn't it? Going to a spanner in the works I think.

I don't think my system has any gauges on it. Just a header tank in the loft, cylinder it cupboard boiler in kitchen.

 

[tigerstyle]

Thanks for the input, this project is on the back burner for a few weeks, but Draytons + Inhibitor are on the list.

Filling with inhibitor will be easy when the system is drained down, just pour it into the top of one of the rads after the system has been drained and all pipes secured back up?

Worth running a bottle of sludge remover through the system before draining? Would the presumably need to drain then refill with just water, run it up to temp, drain again and then put the inhibitor in to stop mixing of chemicals in there? Unless the sludge remover and inhibitor are safe and don't react?