Please can anyone answer 3 questions about central heating?

[Martell]

The bit that I have circled in the picture needs to be undone and then the head will come off the trv. They may only be finger tight but if you struggle to grip things you may needs some adjustable grips.

View attachment 35462

Ok thank you very much. I'll try that tomorrow.

 

[dancinplumba]

Thank you. The room stat is about 10 feet away from the nearest rad and about 7 feet off the floor. It's set 5 degrees higher than the actual room temperature.

should be 4 ft

 

[Martell]

Sorry I wasn’t having a go but it had been said several times

No I know you're trying to help, but I've put all these suggestions to an engineer. He said draining and refilling the system wouldn't help, that he had no concern about the new TRVs that had been fitted, that I would need to keep bleeding the system as the noise was being caused by air, that the location of my room stat is not an issue. I do have faith in what he told me and he's offered to come back but it's taking too muc to solve the problem of the gushing sound in the pipes and rads but I wondered if I should be better informed or I'll just keep going over the same suggestions!

 

[Martell]

should be 4 ft

Ok thank you.

 

[Harvest Fields]

No I know you're trying to help, but I've put all these suggestions to an engineer. He said draining and refilling the system wouldn't help, that he had no concern about the new TRVs that had been fitted, that I would need to keep bleeding the system as the noise was being caused by air, that the location of my room stat is not an issue. I do have faith in what he told me and he's offered to come back but it's taking too muc to solve the problem of the gushing sound in the pipes and rads but I wondered if I should be better informed or I'll just keep going over the same suggestions!

The valves on the other end of the radiator may be restricted down to much. That causes noise.

 

[SimonG]

Open the trv head fully before you try and unscrew it. It can make it easier to remove.

 

[Martell]

The valves on the other end of the radiator may be restricted down to much. That causes noise.

Ok that's interesting. Would it be a gushing, coursing noise as if water is being forced through the rads and pipes? It's much worse if the boiler pressure is up to maximum. I've turned down the boiler pressure and eliminated the noise from the rads in my living room (still noisy in the hall and bathroom but they don't bother me). Trouble is, with the boiler pressure turned down, of course, the rads don't get so hot (ok for now but might not be ok when winter sets in).

 

[Martell]

Open the trv head fully before you try and unscrew it. It can make it easier to remove.

Cheers. Thanks very much.

 

[Riley]

Ok that's interesting. Would it be a gushing, coursing noise as if water is being forced through the rads and pipes? It's much worse if the boiler pressure is up to maximum. I've turned down the boiler pressure and eliminated the noise from the rads in my living room (still noisy in the hall and bathroom but they don't bother me). Trouble is, with the boiler pressure turned down, of course, the rads don't get so hot (ok for now but might not be ok when winter sets in).

How are you changing pressure??

 

[Martell]

How are you changing pressure??

Sorry perhaps I'm using the wrong words! The boiler has 2 dials with numbers, one for heating and one for hot water and the heating dial has been running at number 7 (maximum) so I turned it down to 5. I'm guessing this isn't pressure, then? It's temperature?