Central Heating System Flush

[NISAR1]

Hi,

I am going to service my central heating system (not the boiler). I have got sentinel x300 which you put in to a radiator and then turn on the heating system with all radiators turned to max. After an hour I will drain the whole system out from 2 points fixing a hosepipe to the 2 radiators. Once that is done I will insert the x100 inhibitor and fill the system up with fresh water. I will then bleed all the radiators and make sure the bar pressure is at 1.

Have I missed anything out?

Thanks

[Dogsbody2]

No, except to say that you really have to flush it several times to get every last bit of the flushing agent, together with dislodged ferrous / ferric (iron) sediment out of the system. Invariably, this takes a fair bit of time, as you have to rough bleed the rads (to fill them back up with water) and briefly run the pump (to mix unflushed solution and fresh water up) between each drain down.

The number of times you do it really depends on the design of your system - some leave more litres of undrained sediment in than others.

Personally I do this in September - not in the middle of the heating system, just in case something untoward goes wrong, but it depends if you have a current problem, I guess.

[NISAR1]

Thanks dogsbody2.

[The Builder]

Do as Dogs suggests, Nisar................ but you only left out one thing .......putting the kettle on .............. and the biscuits ;o)