Ok wondering if this might be an issue.
Conventional Gas fired CH system.
Gravity fed system pipework has been altered in the past C 20 years ago, new boiler fitted C2 years ago 3 port valve c 18 months old and pump c 3 years old. All works reasonably well house is reasonably warm, never hot enough for the Mrs though!!!! and HW is there unless someone has a bath and someone else decides to have a shower immediately after. The boiler was moved from one end of the kitchen and therefore has a C 15 foot low level run ie dropping 4-5 foot behind the kitchen units before heading back to where it was originally positioned
Since its got colder I seem to find air channelling ( if it does that) through the system shortly after the HW system comes on but not every night. My desk is below the airing cupboard and sometimes there is a big burp and sometimes just a little stream of air over 4-5 minutes, usually 15 -25 mins after the HW circuit is activated. Seems odd. Also seems odd that its around the time that the HW switches on and not the CH.
Have tried bleeding the system - rads and get nothing although realistically I think that the system needs re balancing as not all get that hot. The rads I intend changing soon as they are C30 years old and make a fair bit of noise, as does the pipework!
Any ideas what is occurring and anything I can do to help diagnose
Conventional Gas fired CH system.
Gravity fed system pipework has been altered in the past C 20 years ago, new boiler fitted C2 years ago 3 port valve c 18 months old and pump c 3 years old. All works reasonably well house is reasonably warm, never hot enough for the Mrs though!!!! and HW is there unless someone has a bath and someone else decides to have a shower immediately after. The boiler was moved from one end of the kitchen and therefore has a C 15 foot low level run ie dropping 4-5 foot behind the kitchen units before heading back to where it was originally positioned
Since its got colder I seem to find air channelling ( if it does that) through the system shortly after the HW system comes on but not every night. My desk is below the airing cupboard and sometimes there is a big burp and sometimes just a little stream of air over 4-5 minutes, usually 15 -25 mins after the HW circuit is activated. Seems odd. Also seems odd that its around the time that the HW switches on and not the CH.
Have tried bleeding the system - rads and get nothing although realistically I think that the system needs re balancing as not all get that hot. The rads I intend changing soon as they are C30 years old and make a fair bit of noise, as does the pipework!
Any ideas what is occurring and anything I can do to help diagnose
