I have a question about my gas central heating system. I have an open vented, pumped flow, wet system. I have bled all the rads on the system. I have three rads which are probably the furthest from the pump (one of which is in my cellar) that have cold spots.
I had to turn the pump down last year because it was causing water to vent to the outside of the house.
If I turn the pump up will this warm up the rads?
Do I need to turn the thermostats up allow the system to heat to a higher temperature, and so heat up these rads?
If I do have to turn up the pump pressure is there any other way of stopping the water venting to the outside?
Thanking you in advance.