How to flush a non pressurised CH system.

jawjawsdad

I want to flush my central heating system and then put some rust inhibitor in. What is the easiest way to go about doing this?

Thanks

gas4you

Hire a powerflush machine, then remove your pump and connect the machine to the pump valves.

Block off the vent and cold fill pipe, add the cleanser and bob's you uncle.

Canucklehead

Good afternoon: see here.
Btw...read the disclaimer before you proceed;)
HTH

Canucklehead