Zone Valves

Discussion in 'Plumbers' Talk' started by oliver1234, Oct 21, 2010.

  1. oliver1234

    oliver1234 New Member

    Further to my earlier post re: changing my girlfriends cylinder.

    The current system is pumped but there are no controls apart from a timer so it's either hot water and heating or nothing.

    Whilst I have the system drained to replace the leaking cylinder I plan to convert it to a crude S plan by fitting a zone valve on the feed to the heating circuit, problem is I won't have time to do the wiring etc because I'm going away for a while.

    Are zone valves normally open when un-powered or do they need power to reamin open?

    Thanks chaps, as always your help is greatly appreciated.
     
  2. tomplum

    tomplum Active Member

    zone valves are closed and need power to open,
    your main problem will be whether there are any rads taken off the circs before the cylinder or it won't work
    the rule is this,
    from boiler first tee vent, second tee, cold feed, third tee cylinder, and on the return last tee before boiler is the cylinder,
    hope this is usefull
     
  3. oliver1234

    oliver1234 New Member

    Thanks Tom that's great, I will take a picture a bit later and post it on photobucket.

    I did have a quick look last night and it looked like it would work but i'm not sure!
     
  4. oliver1234

    oliver1234 New Member

    Took a picture but can't get in online!

    Can confirm that the order of things is as you said Tom and there aren't any radiators teed off before the cylinder.

    I think my main problem is that the existing cylinder is only 1030 mm high by 370mm wide and there isn't any room for a wider one in the cupboard.
     
  5. Captain Leaky

    Captain Leaky New Member

    You would be wiser to leave things as they are then do a proper conversion later when you have the time.
     
  6. oliver1234

    oliver1234 New Member

    Thanks Skip but what do you mean?

    Is the cylider size the problem or do you just think I shouldn't fit a zone valve until I have time to wire it up?
     
  7. Captain Leaky

    Captain Leaky New Member

    Don't fit the valve until you can do it properly.
     
  8. oliver1234

    oliver1234 New Member

    OK.. I won't, must admit I was wondering how I was going to keep it open to allow the heating to work until I'd got it wired.
     
  9. superfurryanimal

    superfurryanimal New Member

    You can manually open honeywell zone valves
     
  10. oliver1234

    oliver1234 New Member

    http://www.flickr.com/photos/55035994@N06/5102230293/

    Managed to get the picture online.

    The pipe nearest the door is the flow to the rads, I intend to fit the zone valve between the two compression couplings you can see.

    The vent is the horizontal piece of 22 at the bottom and the feed from the FE vessel is T'd in above it.

    Just in case you're wondering, the bent piece of 15 you can see above the pump terminates just out of view, it is an air vent.
     
  11. superfurryanimal

    superfurryanimal New Member

    *treating her to a fully pumped system... get her a new carpet son !

    [Edited by: admin]
     
  12. oliver1234

    oliver1234 New Member

    You've got a point Furry! lol
     
  13. Captain Leaky

    Captain Leaky New Member

    Not really worth the hassle of upgrading IMHO ;)
     
  14. oliver1234

    oliver1234 New Member

    What do you reckon then Skip...get a new house? lol
     
  15. superfurryanimal

    superfurryanimal New Member

    oli ... Dont fogert to cut a bypass in if you aint got 1 on ya boiler :)
     
  16. oliver1234

    oliver1234 New Member

    Will it need one?

    Won't the heating coil do the job? (bear in mind I'm only fitting one zone valve)
     
  17. superfurryanimal

    superfurryanimal New Member

    nor, i thought u was going for 2...

    why dont you fit 2 honeywell valves & a bypass ?

    u can open the honeywell ones with a lever till u get time to wire it in .
     
  18. chris roast

    chris roast Member

    fit a three port zone valve, no bypass required
     
  19. G Brown

    G Brown New Member

    yup, 3 port valve...or leave well alone - if it aint broke dont fix it.
     
  20. doing a bit

    doing a bit New Member

    the t above the pump looks ideal to swap and fit a 3port to make it a y plan , whatever you do fit gate valves either side to allow easy maintenance later, as said you can manually lock open motorised valves
     

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