B
Bootneck
Hi,
I have a wet UFH system which includes a 9 port manifold that heats 5 loops downstairs and four loops upstairs. I do not have any radiators in the house and the manifold is located next to my boiler (Baxi Combi 130HE) in a downstairs utility room. I moved into the property 7 months ago so have inherited the system. The house has only been built 11 years so I presume it was installed when the house was built. The problem I have is that my room temperatures (specifically in my living room which is upstairs) will not get above 17/18 degrees even when the room stat is set at maximum. When I turned the heating on for the first time it seemed to function correctly however over the last couple of months I have noticed it deteriorate. There is plenty of heat from the flow pipe at the manifold but the return loops are either luke warm or cold.
I initially thought the problem lay with the blending valve but this has since been replaced. I have tried adjusting settings on both the boiler and blending valve but the highest room temperature I get is 18. The impeller on the pump has been checked and it seems to be operating fine. All of the flow meters read at around 1 l/min except for the living room loop which is at 3. This to me does not make sense as although this is showing the highest flow rate this is the worst loop for circulation.
I have included a few photos of the manifold should anyone be able to help.
Also just to confuse the issue further, there is a gate valve which I believe is a manual bypass valve (just visible at bottom of first photo). Can anyone tell me whether this should be open or closed. To date I have been told three different things; one person said open, one said closed and another said open a bit. Would the incorrect position of this valve affect the heating output?
I have a wet UFH system which includes a 9 port manifold that heats 5 loops downstairs and four loops upstairs. I do not have any radiators in the house and the manifold is located next to my boiler (Baxi Combi 130HE) in a downstairs utility room. I moved into the property 7 months ago so have inherited the system. The house has only been built 11 years so I presume it was installed when the house was built. The problem I have is that my room temperatures (specifically in my living room which is upstairs) will not get above 17/18 degrees even when the room stat is set at maximum. When I turned the heating on for the first time it seemed to function correctly however over the last couple of months I have noticed it deteriorate. There is plenty of heat from the flow pipe at the manifold but the return loops are either luke warm or cold.
I initially thought the problem lay with the blending valve but this has since been replaced. I have tried adjusting settings on both the boiler and blending valve but the highest room temperature I get is 18. The impeller on the pump has been checked and it seems to be operating fine. All of the flow meters read at around 1 l/min except for the living room loop which is at 3. This to me does not make sense as although this is showing the highest flow rate this is the worst loop for circulation.
I have included a few photos of the manifold should anyone be able to help.
Also just to confuse the issue further, there is a gate valve which I believe is a manual bypass valve (just visible at bottom of first photo). Can anyone tell me whether this should be open or closed. To date I have been told three different things; one person said open, one said closed and another said open a bit. Would the incorrect position of this valve affect the heating output?
