Ideal FF330/350 open vent dripping into small header tank

[mrhaynes00]

Hi - the open vent is constantly dripping into the small header. I can not see a pressure gauge in the system and suspect the following:

a. the coil in the immersion tank has split
b. the PRV is faulty
c. the big guy upstairs has it in for me

Any thoughts or resolves would be muchly appreciated. Just lost my job so make it a low cost fix please!!

Mark

 

[mountainman]

If you have a small tank and an open vent above it then you won't have a prv.

 

[Simon F]

Hello Mark, welcome to the forum.
the low cost option is simple, do nothing ( not recommended )
option A seems the most plausible.
is the cold feed tank for the hw cylinder higher than the ch f+e tank??

you could test it to confirm the coil is at fault, a simple test could be to:-
overnight turn of the supply to the cold feed tank, mark the level check if it goes down ( this will only work if you don't use the hot water at the same time! )
or bung the cold feed to the hw cylinder and see what happens.

 

[mrhaynes00]

Hi Simon and Thanks.

The feed to the big tank in the loft is higher than for the smaller one.

The (what looks like the cylinder vent) drips into the smaller tank.

If I turn of the CW feed to the big tank (I think this is what you are suggesting) - to test the coil - what should I be looking for?

The external overflo runs at anything from a regular trip to a constant drizzle at about 5L per hour.

When the CH fires up and thr pump runs, the drips stop for about 30-60 seconds. (pump on No. 2). Then it reverts to a drizzle.

What am I looking for to confirm the coils is faulty?

Does this signal the need for a nre HW cylinder?

Thanks again in advance - Mark - V poor, S.Yorks