problem iflo 3 port valve install? help required please.

[twgas]

Where does the "bleed" go?

 

[sifly2]

An auto air vent just above the tank.
Found the problem I somehow have overlooked putting the 3 port in wrong!..
Thanks again for pointing it out.

 

[D_Hailsham]

That looks like an ACL drayton valve, if so its connected wrong

It doesn't matter which brand valve it is, it's been installed incorrectly.

For a start, the pump should be connected to the centre port!

 

[St0rmer66]

Never seen one done like that before . I thought mixing up the "A" and "B" port was bad enough! (everyone has done that at least once, I'm sure!)

 

[twgas]

DH, have you ever seen a drayton tam4?

 

[D_Hailsham]

DH, have you ever seen a drayton tam4?

No.

What's the relevance? The valve has been installed incorrectly, i.e the wrong pipes have been connected to each port.

 

[St0rmer66]

Haven't seen a TAM4 for a while now! Quite a job to change over now the relays etc are obsolete.

 

[twgas]

DH, have you ever seen a drayton tam4?

No.

What's the relevance? The valve has been installed incorrectly, i.e the wrong pipes have been connected to each port.

A 3 port valve where the centre is an outlet rather than the inlet

 

[D_Hailsham]

A 3 port valve where the centre is an outlet rather than the inlet

No wonder the OP was confused. Who was the bright spark who thought of that idea?

 

[sifly2]

Strangely it seems better now!

I even took the valve out to check it worked OK, never put one in before but that's no excuse for not seeing the obvious, I knew which port went where, so think the brain must have gone to sleep!

Oh well won't do that again, that's for sure.

Thanks again for the advice.

 

[D_Hailsham]

Alarm bells started ringing when I read this:

if I set hot water only valve travels across

The valve doesn't move for HW only as the HW port is open when the valve is not powered.

 

[45yearsagasman]

View media item 32248This should give you some idea on the way to pipe up your airing cupboard.
Ignore the fact that the sketch shows a pair of valves. The sequence of connecting the pipes is vital. The feed and vent connections still don't look correct to me, but that may be because I can't see where they go on the pic.

 

[sifly2]

That's almost how it is plumbed, only difference is a 3 port, and feed pipe is plumbed to cylinder return.

 

[D_Hailsham]

That's almost how it is plumbed, only difference is a 3 port, and feed pipe is plumbed to cylinder return.

1. Which boiler do you have (make and model)?

2. Where is the vent plumbed in?

 

[sifly2]

Vent is as per drawing... Boiler is a back boiler, baxi I think 40+ years old, serviced regularly by local gas safe technician.