Range pipes banging loudly

[marionp]

Please can anyone help..... I recently got an oil burner taken away and got the pipes sealed off as I also use a solid fuel Wamsler range to heat my water/radiators as oil is too expensive for me. Since I got the pipes capped I have had really bad water pressure/banging away in the pipes.... this only happens when the fire reaches a certain tempreture, I have to run my water to stop the banging...... and now I notice is starting to come out the water flow pipe outside......any ideas would be greatly appreciated

Meant too say that the radiators are heating ok,

 

[Norcon]

Maybe air in the system now.

Or maybe the pipes need joining and not capped. Your plumber should have left this in a safe condition having the solid fuel appliance in operation and ensuring everything was alright.