boilermate 2000 with potterton boilers

[stephenbell]

Took 3 radiators out of the conservatory and replaced them with 2 new ones. Also left two tails off and joined them with elbows for an extension at a later date. But now cant seem to get them to heat up. All the other radiators in the house are warm and the 2 new ones have been aired.

Whoever fitted the 3 old radiators put tee's in where the flow and return goes into the potterton boiler.

The potterton boiler fires up every now and then, not sure if thats what's suppposed to happen and when its off shows a red light.

Any feedback would be appreciated, thanks

 

[mickyg]

sounds like its piped up wrong. All the flow and returns should go back to the boilermate.

 

[sparesmerchant]

You might have been better capping those tails or at least using a gate valve or similar to increase the resistance through. It sounds like the CH flow is simply going around the path of least hydraulic resistance ie. the tails, instead of through the new radiators.

The boiler will fire periodically to maintain the thermal store in the boilermate, completely normal.

 

[stephenbell]

Thats what i thought but why where the radiators before getting warm?

Put 2 ballifixs on the 2 tails before the elbows. When i disconect the elbows and open the ballifixes the water was cold then went really warm. But after i shut them they go cold again after a while. Same with the rads when i air them after a while?

cheers

 

[twgas]

Whoever fitted the 3 old radiators put tee's in where the flow and return goes into the potterton boiler

Maybe a pic or two of this may help - sounds completely wrong.