cannot find return pipe for bathroom radiator

[bluesky]

i have converted a regular boiler to combination one, there is a 15mm pipe after the pump and i found it was the flow for the radiator in the bathroom, however this radiator is not hot although all the others work fine, i am thinking something wrong with the return pipe but cannot find it at all, anyone has met this kind of thing before?

cheers in advance

 

[Rickster123]

Hi mate it sounds like the old radiator was run from the primary flow and return. What did you do with the old primary return pipe work? Did you just cap it in the airing cupboard?

 

[on31ll]

what are you saying ? that there isnt a flow and return pipe ? just one pipe ?? think a picture or two may help

 

[jtsplumbing]

Are you saying there is only one pipe connected to the radiator ??

 

[on31ll]

Are you saying there is only one pipe connected to the radiator ??

i no thats what im thinking ? i cant picture the problem

 

[erpkid]

As APPlumbing says in the old days it was common to run a rad off the primary flow and return so that you had heat in the bathroom for drying whenever you had the system set to heat water but as in summer you did not want the house warmed. You will need to track the pipes and re-connect. Sometimes on older systems this rad was on a gravity loop but this depends on the age of the property.

 

[bluesky]

many thanks all,

i removed the pump, capped the flow for DHW, connected the primary flow and primary return, there is a bypass and i capped it, there is a 15mm pipe going to the bathroom radiator, however i cannot find a 15mm return pipe for the radiator, the pipe for the radiator is under wooden floor, how can i get sure it is connected to the primary return already?

 

[jtsplumbing]

Why not just repipe it and have done instead of wasteing time trying to find it.??

 

[stevetheplumber]

its easy to find its the one on the opposite side to the flow i assume your not gsr?

 

[on31ll]

its easy to find its the one on the opposite side to the flow i assume your not gsr?

or tech cert or level 2 ?

 

[dancinplumba]

its easy to find its the one on the opposite side to the flow i assume your not gsr?

haha nice one stevie

 

[on31ll]

you are going to post more info on your situation. bit confusing for us. so you have a combi boiler now ? with an external pump aswell ? has the cold water storage cistern and hot water cylinder been removed if it is a combi ?

 

[Avatar]

Its definitely attached to the primaries, so you need to cap them off and attach radiator to the main pipe network elsewhere as convenient . . . .

People sometime had this mystery saying 'I don't know why my bathroom rad comes on when I turn the hot water on' - well this is why!

Still it is nice to respond when so many guys have bothered to answer your question . . . . ..

 

[bluesky]

i assue the radiator is still connected to primary return,