How to flush

[timbalcombe]

Hi,

Need to add some inhibitor after having drained system down to repair a valve.
Now that I know I can do it, I would like to replace some old valves. I would like to clean the system using F3 added to the rad.

I have an ecotec pro28 combi.
What is the best procedure for performing a flush using the connected filling hose.
Do I keep the in valve on the boiler open (seems obvious!), and just open up the fill valve, thus letting mains presure into the system and flushing it out?
This seems to easy, and I'm sure there must be something else apart from having the rad valves open of course.
Thanks

 

[JohnD]

First, fourth and fifth

//www.diynot.com/forums/viewforum.php?f=7

 

[timbalcombe]

do I keep the return side on the boiler closed?

 

[JohnD]

have another look at //www.diynot.com/wiki/plumbing:flushing_heating_systems

the paragraph headed "Closing boiler circuit."

 

[danlightbulb]

Having just also read that guidance, how do you flush upstairs rads when the only drain point is off the downstairs rad valves?

 

[timbalcombe]

cheers Jon

 

[JohnD]

Having just also read that guidance, how do you flush upstairs rads when the only drain point is off the downstairs rad valves?

have another look at //www.diynot.com/wiki/plumbing:flushing_heating_systems

the 3rd paragraph in the "Flushing procedure." section