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www.ultimatehandyman.co.uk Forum Index -> Plumbing Forum
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IDontBelieveIt
Senior Member
Joined: 29 Jul 2008
Posts: 836
Location: North Hampshire
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 Posted: Sat Sep 27, 2008 4:19 pm Post subject: Three port valves.... |
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Gotta install a frost stat on a system that uses a 3-port valve.
Is it the grey wire from the 3-P valve that should be driven by HW OFF of the controller/timer? It's a Honeywell 3 port valve.
Cheers
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thescruff
Senior Member
Joined: 10 Mar 2008
Posts: 4379
Location: Bath
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| Posted: Sat Sep 27, 2008 5:01 pm Post subject: |
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No it isn't.
More info on the boiler and programmer please.
Usually the best way is via L & ch on in the programmer (4) ?
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IDontBelieveIt
Senior Member
Joined: 29 Jul 2008
Posts: 836
Location: North Hampshire
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| Posted: Sat Sep 27, 2008 5:47 pm Post subject: |
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Cheers Scruff. I thin I have mixed 2 things here.
The frost free stat is one thing and I am kind of happy about that,. The boiler is in a loft space so needs to frost free. I drive the stat with permanent live, the switched output of the frost stat then goes via a pipe sensor to the boiler demand so it fires up regardless of the controller/timer. As soon as the pipe stat sense heat it then breaks the supply which the shuts down the boiler.
I am also due to rewire up the wiring centre as the current one is a birds nest of choc blocks (loads) all shoved into a back box and a blanking plate fitted on top. I will be replacing it with a Honeywell wiring station and it was the 23 port valve I have problems with as there is no spring return unlike a 2 port valve so it has to be driven back?
Cheers again Scruff
Victor
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thescruff
Senior Member
Joined: 10 Mar 2008
Posts: 4379
Location: Bath
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| Posted: Sat Sep 27, 2008 6:50 pm Post subject: |
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The frost stat and the pipe stat can be connected in series.
What does a 23 port valve look like.
Needs some numbers.
I assume the 3port is the diverter type and not the flow share.
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IDontBelieveIt
Senior Member
Joined: 29 Jul 2008
Posts: 836
Location: North Hampshire
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| Posted: Sat Sep 27, 2008 7:11 pm Post subject: |
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Will bet the info for you Scruff - not on site at the moment 
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Tryanything
Senior Member
Joined: 18 Aug 2007
Posts: 1300
Location: Essex
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| Posted: Sat Sep 27, 2008 10:01 pm Post subject: |
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| thescruff wrote: |
What does a 23 port valve look like.
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Very big l should imagine
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