Hi,
I have just fitted new pipe work for a new CH system. The system is all connected back to a combi boiler. I have not fitted the rads yet as I want to decorate etc. first but all the stabbings are in with stop ends on.
I want to pressure test the pipe work before I get the gas engineers to connect the boiler up etc. I have an air kit but I don't want to use this as it is bad practice (and dangerous) as far as I know.
My aim initially was to connect the flow / return at the end and lowest point in the house with a isolation valve and drain off, and then fill the system with the filling loop.
The query I have is that the system will be full of air? Will the boiler have an air admittance valve and even if it does, surely air will remain in other areas of the system. Should I fit AAV to some of the rad stabbings first at the highest point or am I just overthinking it?
Just trying to safely test that is all. Would be happy going for air but it doesn't sound safe given the PSI and I trust what others say on the matter. Would be happy with water as I can see any leaks and now is the time for them.
Cheers all.
slimj
I have just fitted new pipe work for a new CH system. The system is all connected back to a combi boiler. I have not fitted the rads yet as I want to decorate etc. first but all the stabbings are in with stop ends on.
I want to pressure test the pipe work before I get the gas engineers to connect the boiler up etc. I have an air kit but I don't want to use this as it is bad practice (and dangerous) as far as I know.
My aim initially was to connect the flow / return at the end and lowest point in the house with a isolation valve and drain off, and then fill the system with the filling loop.
The query I have is that the system will be full of air? Will the boiler have an air admittance valve and even if it does, surely air will remain in other areas of the system. Should I fit AAV to some of the rad stabbings first at the highest point or am I just overthinking it?
Just trying to safely test that is all. Would be happy going for air but it doesn't sound safe given the PSI and I trust what others say on the matter. Would be happy with water as I can see any leaks and now is the time for them.
Cheers all.
slimj