Recent content by gmt

on the gauge i have it stays at 25psi which i think is a little less than 2bar. Thanks for all your help folks. I probably should have got a plumber in the first place when i saw it was a sealed system but i have learned a lot in the last few days..thanks again. Gerry

Boiler in on a vertical pipe, i'm after turning on heating again and it seems fine. What psi should i see at air valve on expansion tank?

Hello, We have heat! not sure why, checked all valves, rads, got pressure to 1.5 bar as before and turned on boiler, its been running for 1/2 hour or more and all rads heating nicely. When i opened "silver screw" on pump there was a short gush of air before water, could the pump have been air...

Hotter than pipe below it, pipe from boiler to pump is copper but from pump to house is Qual pex. Just checked pressure on air valve on Expansion vessel and it has gone up to 20p/in. Water pressure in system has dropped.

don't worry about insulting me... i appreciate suggestions and as a retired telecom technician i know the obvious is often overlooked...When i open silver screw on pump i get trickle of water. When the pipes leave the boiler they go under ground to the house ( about 10m) both pipes are hot..Flow...

even though all rads bleed through to water, is it possible to have an air lock in the 1" pipes coming from boiler to house?... can a pump be vibrating and making noise but not pumping water?

i have gone through the system a number of times...and all valves are open, or at least seem open, pump runs after burner stops, i can hear it and feel vibration in pipe..should the valves on both sides of the pump be open fully?

External gercrosse boiler stops after 10 minutes, water very hot at both sides of pump but no hot water in house, rads or HW tank.. Sealed system, replaced radiator recently, refilled to 1.5 bar, expansion vessel at 12p/in, all valves open, all rads bled...pump running..