3 port valve change 4 to 5 wire.

[Dan Masey]

I need to change a 3 port valve tomorrow as the valve is screwed and leaking badly. It's a 4 wire potterton but I want to replace with a 5 wire honeywell. Can anyone help with the wiring? Where does the extra wire go????

 

[gassafe]

What's the extra wire?

In the past I have only seen the extra wire as an earth, so just took that into the wiring centre...

 

[Kev the gas]

And would the extra wire be GREEN AND YELLOW ?????????????

Sorry for shouting but if unsure pass the job on

 

[gassafe]

Honeywell or drayton may do a 3 port valve comparison also so you can see see what changes to make

 

[Kev the gas]

Lol synchronised earthing with gassafe :clap:

 

[tamz]

It doesn't take much figuring out.

 

[kay-jay]

Metal head valves require an earth

 

[gassafe]

Metal head valves require an earth

The drayton has an earth too but plastic head !

 

[kay-jay]

The drayton has an earth too but plastic head !

Some placcy ones do all metal ones do I think.
Anyway all four wire and five wires do the same job the fifth wire is earth regardless.

 

[PETE 123]

4 wire l earth n live out for on
5 wire l earth n live out for on live out when off

 

[Roger Welton]

4 wire l earth n live out for on
5 wire l earth n live out for on live out when off

Correct for 2 port but Dan is looking at a 3 port

 

[tamz]

The so called 4 wire motorised valves only lack an earth (2 or 3 port) as they are electrically isolated from the valve body.

 

[lame plumber]

have a read all in here http://www.google.co.uk/url?sa=t&rc...g4CADQ&usg=AFQjCNFoF8kBJG_Ukn4EQ9iJiESbkpX1kg

 

[village idiot]

Extra wire should be connected to the earth terminal.

 

[tom609]

Seem to think two wires linked together but cant remember for sure call honewell tech they will tell you

 

[tamz]

Where do you get the red from?

 

[tom609]

Where do you get the red from?

Thought i had edited it before anyone saw it ha hayour too quick tamz

 

[tamz]

Thought i had edited it before anyone saw it ha hayour too quick tamz

Must have just clicked in at the right time :smile:

It is a potterton mid pos valve. Same colours as any other mid position just no earth.
The valves that had a red were 6 wire valves like the danfoss heatshares.
Sunvics/sopacs had a red instead of an orange.

 

[DaveTidy]

When changing a valve for a Honeywell, go to the honey valve interchangability table on page 18 and look at the potterton 4 wire at the bottom which will show you colour for colour.

Link

 

[Dan Masey]

Thanks for the replies. I'm useless at wiring, normally ours spark would change the actuators but I'm changing it all today. Didn't realise the 4 wire version doesn't have an earth.

 

[DaveTidy]

Be careful as some 4 wires are priority valves which although a Honeywell 4073a fits physically, it is not a compatable replacement!