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Two vent pipes to header tank

  • 11-06-2020 10:19am
    #1
    alan4cult
    Registered Users, Registered Users 2 Posts: 1,583 ✭✭✭


    Is it normal to have two vent pipes in an unvented central heating system? I think it might be to do with an old back boiler which was removed from the system a few years ago. One of the vent pipes has a valve in the hot press that turns it on and off. Is it not dangerous to have a valve on a vent pipe?

    The other vent pipe and f&e pipe have no valves.


Comments

  • #2
    John.G
    Registered Users, Registered Users 2 Posts: 3,623 ✭✭✭John.G


    Well, you can have a unvented CH system but have a vented hot water cylinder OR you could have a vented CH system (with F&E tank & vent or vents) with a unvented hot water cylinder. Whichever system or combination of systems is fitted cannot have a valve on its vent pipe under any circumstances.


  • #3
    alan4cult
    Registered Users, Registered Users 2 Posts: 1,583 ✭✭✭alan4cult


    Thanks John,
    It's time I call a plumber and have the valve removed as very dangerous. I've currently tied it open so nobody can close accidentally. I have an f&e pipe, it also has a valve but I imagine this is for draining the system, it's open too.


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