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boiler condensate drains airtight?

  • 22-04-2015 8:01am
    #1
    slipstream
    Registered Users, Registered Users 2 Posts: 199 ✭✭


    are boiler condensate drains airtight or would a trap be needed?

    i would guess the drain is airtight to keep out sewer smells but i can find no information on this in the manuals.

    slip


Comments

  • #2
    Calahonda52
    Registered Users, Registered Users 2 Posts: 12,888 ✭✭✭✭Calahonda52


    Smells should never arise as the pipe is never sealed at the exit end.
    It is airtight at the boiler end

    “I can’t pay my staff or mortgage with instagram likes”.



  • #3
    Dtp1979
    Registered Users, Registered Users 2 Posts: 12,870 ✭✭✭✭Dtp1979


    slipstream wrote: »
    are boiler condensate drains airtight or would a trap be needed?

    i would guess the drain is airtight to keep out sewer smells but i can find no information on this in the manuals.

    slip

    A trap is needed if joining into the sewer. Make sure the is an air break in the pipe from the boiler joining the sewer pipe. If not then the boilers own trap could have its water seal siphoned. This would lead to dangerous fumes being emitted into the pipe


  • #4
    slipstream
    Registered Users, Registered Users 2 Posts: 199 ✭✭slipstream


    Dtp1979 wrote: »
    A trap is needed if joining into the sewer. Make sure the is an air break in the pipe from the boiler joining the sewer pipe. If not then the boilers own trap could have its water seal siphoned. This would lead to dangerous fumes being emitted into the pipe

    we have a short (2m) airtight connection from boiler to sewer pipe at present.

    would all recent boilers have an internal water trap on their condensate drain? we have a viess mann vitodens.


  • #5
    Dtp1979
    Registered Users, Registered Users 2 Posts: 12,870 ✭✭✭✭Dtp1979


    slipstream wrote: »
    we have a short (2m) airtight connection from boiler to sewer pipe at present.

    would all recent boilers have an internal water trap on their condensate drain? we have a viess mann vitodens.

    Ye that'd have its own trap.


  • #6
    Calahonda52
    Registered Users, Registered Users 2 Posts: 12,888 ✭✭✭✭Calahonda52


    slipstream wrote: »
    we have a short (2m) airtight connection from boiler to sewer pipe at present.

    What do u mean by airtight?

    “I can’t pay my staff or mortgage with instagram likes”.



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  • #7
    slipstream
    Registered Users, Registered Users 2 Posts: 199 ✭✭slipstream


    Calahonda52 wrote: »
    What do u mean by airtight?

    Solvent welded pipe from the boiler to 4" drain connection.

    I say airtight as we have done airtightness tests and no leaks were found at this location.


  • #8
    Calahonda52
    Registered Users, Registered Users 2 Posts: 12,888 ✭✭✭✭Calahonda52


    Grand, and no bends in it where water could lodge and freeze?

    As said by otherwise u need an air break into the gully for the sewer, it must not go into the rainwater gully if you have two separate systems

    “I can’t pay my staff or mortgage with instagram likes”.



  • #9
    [Deleted User]
    Posts: 0 ✭ [Deleted User]


    slipstream wrote: »
    Solvent welded pipe from the boiler to 4" drain connection.

    I say airtight as we have done airtightness tests and no leaks were found at this location.

    Also Vissmann look for a air gap where the condensate hose connects on to the plastic pipe so that if ever the pipe gets blocked the condensate doesn't back up and destroy the boiler.


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