Hi there,
I've been having high boiler pressure (between 2.5 to 3.5 bars) for over a week now. We had a plumber come in a couple of days ago who drained the central heating circuit, added two bottles of inhibitor and filled it back up so that the boiler showed 1 bar pressure.
We have left the filling loop disconnected, so high pressure definitely isn't because of that. The plumber said we might need to get another expansion vessel outside the boiler to accomodate for the volume of the system.
So the next day the pressure was back at 2.5 bars, and now I'm also getting the smell of the inhibitor in our domestic hot water! I can't smell the inhibitor in cold water from the tap, but the smell is definitely in the hot tap water.
Can't work out how the inhibitor from the CH circuit would get into the domestic hot water or why the pressure is that high - I thought the heating circuit is meant to be sealed? Could there be a leak between our CH circuit and mains water or the megaflo?
So I'm a bit worried about the high pressure (3.5 bars when the boiler is on), and the potential health hazard of inhibitor in our bath water.
As it's NYE it'll be pretty hard to get a plumber in this weekend, anything I can do in the meanwhile? Is the boiler safe to leave on if the pressure gets to 3.5 bar?
We've got the following:
Boiler: Greenstar 30CDi system boiler
Hot water tank: 210 litre unvented indirect Megaflo tank
As I understand the central heating loop runs inside a coil through the megaflo to heat up the domestic water in the tank.
Many thanks for any suggestions and happy New Year to all the forum members!
Joun,
London SW19
I've been having high boiler pressure (between 2.5 to 3.5 bars) for over a week now. We had a plumber come in a couple of days ago who drained the central heating circuit, added two bottles of inhibitor and filled it back up so that the boiler showed 1 bar pressure.
We have left the filling loop disconnected, so high pressure definitely isn't because of that. The plumber said we might need to get another expansion vessel outside the boiler to accomodate for the volume of the system.
So the next day the pressure was back at 2.5 bars, and now I'm also getting the smell of the inhibitor in our domestic hot water! I can't smell the inhibitor in cold water from the tap, but the smell is definitely in the hot tap water.
Can't work out how the inhibitor from the CH circuit would get into the domestic hot water or why the pressure is that high - I thought the heating circuit is meant to be sealed? Could there be a leak between our CH circuit and mains water or the megaflo?
So I'm a bit worried about the high pressure (3.5 bars when the boiler is on), and the potential health hazard of inhibitor in our bath water.
As it's NYE it'll be pretty hard to get a plumber in this weekend, anything I can do in the meanwhile? Is the boiler safe to leave on if the pressure gets to 3.5 bar?
We've got the following:
Boiler: Greenstar 30CDi system boiler
Hot water tank: 210 litre unvented indirect Megaflo tank
As I understand the central heating loop runs inside a coil through the megaflo to heat up the domestic water in the tank.
Many thanks for any suggestions and happy New Year to all the forum members!
Joun,
London SW19