Hi there,
I have a Vogue S32 Gen 2 in an empty rental property and noticed that the Boiler Pressure Gauge was high at about 3 bar. It may be that the old Tenants over pressured it with the filling loop, as I’ve certainly only filled it to 1.5 bar historically. I drained down the CH water pressure to about 2 bar from a Radiator point. But I noticed that the pressure went back up after boiler operation. Initially I thought it was heat expansion or pump pressure flow as the whole system had not been used for months. I then drained down a little further, aiming for about 1.5 bar, but did not reach that level. I was a bit puzzled, but through I‘d let it stabilise as the boiler has not been running in the empty property for nearly 6 months though Covid.
Then I tried running the boiler for a bit and switched on the hot water tap, the pressure gauge dropped with HW flow down to about 1 bar. Switching off the HW tap and the pressure rose back up above 2 bar. I thought that with a System Boiler, the HW flow should not impact pressure in the boiler ?
Running the Cold water tap, there is of course no impact on the boiler pressure.
Perhaps my brain is a bit rusty, but surely there should be no link between Boiler system pressure and HW flow in a System Boiler with HW tanks ?
Any thoughts on this ?
I have a Vogue S32 Gen 2 in an empty rental property and noticed that the Boiler Pressure Gauge was high at about 3 bar. It may be that the old Tenants over pressured it with the filling loop, as I’ve certainly only filled it to 1.5 bar historically. I drained down the CH water pressure to about 2 bar from a Radiator point. But I noticed that the pressure went back up after boiler operation. Initially I thought it was heat expansion or pump pressure flow as the whole system had not been used for months. I then drained down a little further, aiming for about 1.5 bar, but did not reach that level. I was a bit puzzled, but through I‘d let it stabilise as the boiler has not been running in the empty property for nearly 6 months though Covid.
Then I tried running the boiler for a bit and switched on the hot water tap, the pressure gauge dropped with HW flow down to about 1 bar. Switching off the HW tap and the pressure rose back up above 2 bar. I thought that with a System Boiler, the HW flow should not impact pressure in the boiler ?
Running the Cold water tap, there is of course no impact on the boiler pressure.
Perhaps my brain is a bit rusty, but surely there should be no link between Boiler system pressure and HW flow in a System Boiler with HW tanks ?
Any thoughts on this ?