Moved water tanks and having problems

[Luapsetab]

I am in the middle of a loft conversion and have moved my water tanks to a new position. I have put the hot water header tank as high as i can to maintain as much pressure as i can. The expantion tank i have positoned on top of that. Since doing this the expantion tank has become part of the circuit with the vent having hot water continuously running from it. Can anyone give me some advise on how to solve this problem.
Cheers, Paul.

 

[bster]

is the vent pipe still the same distance from the top of the F&E tank as it was before. Measured from the highest part of the vent pipe not the actual oultet of the pipe?

 

[Rob]

sounds like the configuration of your Cold feed and Open vent has been altered which doesnt suit system, was it done by yourself?

 

[Luapsetab]

sounds like the configuration of your Cold feed and Open vent has been altered which doesnt suit system, was it done by yourself?

I helped but my mate(who is a plumber) Did it.
He's gone away to think about it so i thought i'd try and get a second opinion.

 

[Luapsetab]

The vent pipe is about 400mm at the top above the water level.

 

[Luapsetab]

The vent pipe is about 400mm at the top above the water level.

 

[Rob]

what about the cold feed the pipe off the bottom of the tank?

 

[bster]

If there is room, increase the vent pipe height and see what happens, if it stops pumping over and everything else works then your sorted.

If not check weather the relationship between pump, cold feed and vent has been changed.

check if pump speed has been altered.

May be blockage caused when draing a dirty tank also.



Please take not that i am only an apprentice!!!

 

[Luapsetab]

The cold feed pipe from the bottom of the tank goes down to the airing cupboard to the pump then to the motorised valve. The pipe does run horizontal for about three feet due to the position of the tank. We have made sure that there is as much slope on the pipe as we could get.