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ZONE VALVE


 
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WSDLTD

from United Kingdom

Joined: 29 Jun 2006
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Location: Derbyshire,
United Kingdom

PostPosted: Tue Sep 30, 2008 12:43 pm Reply with quote

Can any one tell me the wiring for a zone valve, i have basically a combi boiler with a 2 wire stat thats it, how do i wire in my 5 wire zone valve to that so it opens the zone valve when the thermostat calls for heat

Many thanks
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ericmark

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PostPosted: Tue Sep 30, 2008 1:00 pm Reply with quote

The thermostat works directly on the zone valve.
The micro switches in the zone valve work the central heating.
Eric
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WSDLTD

from United Kingdom

Joined: 29 Jun 2006
Posts: 70
Location: Derbyshire,
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PostPosted: Tue Sep 30, 2008 1:10 pm Reply with quote

so where does the power come from to control the valve and stat then?

if i wire the brown and blue direct to the stat and the grey and the orange to the stat terminals will this work then?

it shows the grey and the orange as a aux switch on the diagram
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kablamar

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Joined: 30 Sep 2008
Posts: 105
Location: United Kingdom

PostPosted: Tue Sep 30, 2008 1:32 pm Reply with quote

The brown and blue are live and neutral that power the motor that drives the valve open. When the power is switched off (by a stat for example) an internal spring will drive the valve closed again. There is usually a lever on the side of the valve casing for manual operation.

Each valve has an aux. switch that can be used for firing the boiler, etc. The colours for this switch are normally gray and orange. It doesn't matter which way round but manufacturers diagrams will show the gray as permanent live and the orange as switched live.

Wiring diagram for two port valves here

http://www.gasman.fsbusiness.co.uk/images/spl.gif
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kablamar

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PostPosted: Tue Sep 30, 2008 1:34 pm Reply with quote

I'm asuming the fifth wire is an earth?
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gas4you

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PostPosted: Tue Sep 30, 2008 3:52 pm Reply with quote

What zones are you controlling with a 3 port mid position valve on a combi?

You would usually need 2 stats of some sort icon_confused.gif
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Softus

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PostPosted: Tue Sep 30, 2008 8:13 pm Reply with quote

WSDLTD wrote:
Can any one tell me the wiring for a zone valve, i have basically a combi boiler with a 2 wire stat thats it, how do i wire in my 5 wire zone valve to that so it opens the zone valve when the thermostat calls for heat

This is a really poor attempt at providing information.

Please provide the make and model of the following:

. boiler
. room thermostat
. zone valve
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Lectrician

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PostPosted: Wed Oct 01, 2008 5:27 am Reply with quote

And what is the zone valve zoning?
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ericmark

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PostPosted: Wed Oct 01, 2008 9:35 am Reply with quote

This shows C system with two zone valves,
Eric
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kablamar

from United Kingdom

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Location: United Kingdom

PostPosted: Wed Oct 01, 2008 3:41 pm Reply with quote

ericmark wrote:
This shows C system with two zone valves,
Eric



A system with 2 x two port zone valves as shown in your drawing is called an S Plan. icon_wink.gif
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Lectrician

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PostPosted: Wed Oct 01, 2008 4:04 pm Reply with quote

And thats an overly complicated diagram too!
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ericmark

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PostPosted: Wed Oct 01, 2008 4:13 pm Reply with quote

You will note the pump is only used with central heating not with domestic hot water I seem to remember the S plan had both pumped but the honeywell website has been changed and I can't now find the S, C, Y and W plans any more to confirm.
Eric
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Softus

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PostPosted: Wed Oct 01, 2008 6:10 pm Reply with quote

ericmark wrote:
the honeywell website has been changed and I can't now find the S, C, Y and W plans any more to confirm.

Is this page what you were looking for?
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kablamar

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Location: United Kingdom

PostPosted: Wed Oct 01, 2008 7:21 pm Reply with quote

A very good guide to lots of different systems here icon_wink.gif

http://www.tlc-direct.co.uk/Technical/DataSheets/Horstmann/Pics.pdf
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ericmark

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PostPosted: Wed Oct 01, 2008 8:02 pm Reply with quote

I agree a little over the top but it was not made to answer this post it was one I had done earlier in true Blue Peter style. Thanks for link and it seems as I thought S system pumps all the diagram was C as stated. But no one as yet has said what plan he is working on so I have no intention of designing a system when we don't have half the info.
Eric
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