Replacing 7 radiators

[Sfc]

Hi guys, am replacing 7 radiators like for like with new TRV's,Lockshields and small amounts of pipework. Would you recommend adding inhibitor to the system before or after a flush after the work has been completed. Thank you for your replies, opinions

 

[IDCHAPPY]

Inhibitor is the last thing to go in..otherwise you just flush it out and its gone 🙂

 

[Sfc]

Thanks that man! Would you run the heating after a flush and once the Inhibitor has been added?

 

[IDCHAPPY]

What i would do, if the system is getting on a bit is
1. Put some cleanser into one of the radiators a few days before you start
2. Run the heating a few time to get it about the system
3. Drain and remove rads
4. Flush
5. Pipe up new rads, fill one with inhibitor but leave the radiator shut till your sure you have no leaks.
6. Once all is watertight open rad with inhibitor and fire up heating system to get it about the system.

 

[Sfc]

What i would do, if the system is getting on a bit is
1. Put some cleanser into one of the radiators a few days before you start
2. Run the heating a few time to get it about the system
3. Drain and remove rads
4. Flush
5. Pipe up new rads, fill one with inhibitor but leave the radiator shut till your sure you have no leaks.
6. Once all is watertight open rad with inhibitor and fire up heating system to get it about the system.

Thanks for your feedback, The rads are already removed and new rads are already hung so won't be able to perform the method this way unfortunately.

 

[Ermintrude]

Just connect new rads, and flush as if old. 80% of the cack in old rads. If you have still got old rads on system flush them with valves on new rads closed. Make sure one rad hasn't got trv just two locksheilds.