Hi All, I have recently had a new Combi boiler installed - ideal logic 30KW I’m having issues with three rads (landing, back bedroom and front bedroom) every other one is fine and we have a total of 3 towel rads, 4 doubles and 5 singles in our house when the heating is on I can hear like a water / boiler noise from these rads, even when the heating is off and we use the hot water we hear the same noise. I have tried the following to resolve the issue 1. bleed all rads so no ai 2. Turn pump speed down to 70% as this is lowest it can go 3. Drain the system and re fill and bleed 4. Remove TVR heads to see if any issue 5. Turn down lock shield heads to restrict the flow of water 6. All rads and tvr, are less than 2 years old if anyone can shed some light it would be great and it’s driving me mad! thanks Martin
Do all the radiators that you are having issues with happen to be on the same floor? Can you try turning off the TRV/valve on all the other radiators and see if the ones you were having an issue with still make the noise? Leave those running for a short while and then bleed those radiators.
Hi, yes they are on the same floor I will turn the other two rads that are on that floor and run the heating.. do I then bleed the rads that are left on? thanks
I have just completed that and also turned off all bar one rad upstairs, a little bit of air came out but still making the noise.
Sometimes opening up the lockshields on the rads in question can help. It can effect the balancing a bit but worth a try.
You need to turn off all radiators in the house except each of the ones making a noise in turn and vent those after running them for a while individually. Also note if the noise is still there when you do that.
evening all, I have tried this tonight as well as bleeding the rads in questions by shutting flow and return valves and no air came out, I’m 100% certain there is no air in the pipework, I’m Thinking it’s the boiler noise travelling through the pipework.
well its been established there is no air currently in the affected radiators,it's a process of elimination maybe adjust the external bypass,ie let it pass more water
locate the external bypass valve,it will have + & - settings or just numbers,hopefully there is an auto bypass valve fitted
That's good as that's another one to tick off the list.................get the fitter back to check out the installation would be a good move.
as I said I think I’ve got a issue with my pipework rather than the install, so going to get that looked at I think.