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Automatic By-pass valves

Discussion in 'Plumbing and Central Heating' started by Doods, 29 Dec 2011.

  1. Doods

    Doods

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    Central Heating Info
    Please can anybody advise if it is OK to install a DU144 Automatic By-pass valve in a vertical position, on the pipe between my pumped flow before the 3- way valve and the cylinder return pipe (as shown on attached picture)

    Thanks
     
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  3. Whitespirit66

    Whitespirit66

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    Why do you want one with a 3 port valve?

    And, yes you can.
     
  4. Doods

    Doods

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    I have TRV's on all radiators and I think that not having a Bypass is causing my boioer to cut out.

    Thanks for your help
     
  5. ALEC1

    ALEC1

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    you should have a room thermostat to shut everything down!
     
  6. Doods

    Doods

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    Sorry, I also have a room stat which i have set just above the required temperature to ensure that it the pump is always being called for heat, otherwise as you say it all shut off and the house get cold.

    Still trying to add a photo of my proposed addition of a by-pass[b]hello [/b]world
     
  7. Andygasman2010

    Andygasman2010

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    On the radiator in the area where the room stat is you shouldn't have a TRV. This radiator will act as the bypass, just remove the head. You can add a bypass as you say but I wouldn't bother.
     
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  9. Doods

    Doods

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    Thank you to all of you for your advice. Back to my 1st question is it OK to put a bypass valve in the position indicated on the photo
     
  10. ALEC1

    ALEC1

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    sorry mate its a nonsense to put a by pass on a y plan...as suggested make one of the radiators a bypass by removing the trv. it should be the radiatir where the theemostat is...
     
  11. chris1337

    chris1337

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    yes , but it doesnt belong there

    listen to andygasman2010 , this is what you need to do

    you dont want to stop your room stat from turning your boiler off by trv in this area shutting down first

    this will cause boiler to cycle on boiler stat through your intended bypass valve...not very efficient

    Chris
     
  12. Whitespirit66

    Whitespirit66

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    Somehow, the information being given is completely 'bypassing' your conciousness. :D

    What the hell, waste your sixty quid on parts and a whole day installing it, then most of another day on here asking how to get air locks out of your rads. You seen determined. :LOL:

    If it was me I would rather spend the 5 mins pulling the head off of a TRV to get the same effect.
     
  13. chris1337

    chris1337

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    its not even the same effect , putting bypass valve in makes system much worse than just simply removing the head where room stat is

    Chris
     
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