Hi All
I have what I believe is a open circuit heating system.
Live in a three storey house with 2 rads on ground, boiler and 4 rads on first floor, hot water tank and 4 rads plus controls on second floor.
I'm not 100% sure but bathroom rad could be on the primary pipe from boiler to pump.
Boiler seems good as creates lovely hot water.
Pump is a grundfos installed upside down on setting 3.
Mechanical valve I think its a Honeywell 3 port valve.
Issue I'm getting is when hot water and heating on together I don't get any water pushed round the rad system.
When hot water is off I do but its not great second floor rads get super hot (valves on those rads only a crack open) - rads on first floor get warm - rads on ground floor get nothing.
I have also noticed attic seems to have lots of moisture (so don't know if getting pumping over - will check tonight as well as try to draw a diagram of pipework )
Had a power flush on the system about 2 years ago.
Any thoughts on if its the pump or the 3 port valve, or if I have a blockage somewhere else?
Every plumber I've ever called seems to only want to suggest another power flush.
I have what I believe is a open circuit heating system.
Live in a three storey house with 2 rads on ground, boiler and 4 rads on first floor, hot water tank and 4 rads plus controls on second floor.
I'm not 100% sure but bathroom rad could be on the primary pipe from boiler to pump.
Boiler seems good as creates lovely hot water.
Pump is a grundfos installed upside down on setting 3.
Mechanical valve I think its a Honeywell 3 port valve.
Issue I'm getting is when hot water and heating on together I don't get any water pushed round the rad system.
When hot water is off I do but its not great second floor rads get super hot (valves on those rads only a crack open) - rads on first floor get warm - rads on ground floor get nothing.
I have also noticed attic seems to have lots of moisture (so don't know if getting pumping over - will check tonight as well as try to draw a diagram of pipework )
Had a power flush on the system about 2 years ago.
Any thoughts on if its the pump or the 3 port valve, or if I have a blockage somewhere else?
Every plumber I've ever called seems to only want to suggest another power flush.