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APT IMM24F wiring (immersion timer)

  • 17-04-2020 07:18PM
    #1
    lisij
    Registered Users, Registered Users 2 Posts: 397 ✭✭


    Hello,

    Im moving house really soon and would like to reinstall the APT IMM24F immersion timer, currently i have a Nest Thermostat installed

    Issue is, while on Nest the wiring is pretty much understandable as they are marked quite well and nest provided with a manual:
    N - blue wire
    L - brown wire
    2 - grey wire
    3 - black wire

    The APT only has 3 connections:
    1 - live out
    2 - live in (brown wire i assume)
    3 - neutral (blue wire i assume)

    Where does grey and black go to?

    Can anyone assist or it is not that simple as changing the light bulb :) and i should call a electrician

    Ill see if i can add some pictures to the post


Comments

  • #2
    kramer1
    Closed Accounts Posts: 305 ✭✭kramer1


    Is this for controlling a boiler!? Apt may not be suitable depending on the switch line


  • #3
    lisij
    Registered Users, Registered Users 2 Posts: 397 ✭✭lisij


    kramer1 wrote: »
    Is this for controlling a boiler!? Apt may not be suitable depending on the switch line

    What do you mean its not suitable, it was there in the first place before Nest was installed


  • #4
    Hintel
    Closed Accounts Posts: 110 ✭✭Hintel


    Not sure which is L and N there , looks like they brought a 5 core to the controller


  • #5
    lisij
    Registered Users, Registered Users 2 Posts: 397 ✭✭lisij


    Hintel wrote: »
    Not sure which is L and N there , looks like they brought a 5 core to the controller

    3 is N, 2 is L no?


  • #6
    irishkopite 2011
    Registered Users, Registered Users 2 Posts: 193 ✭✭irishkopite 2011


    Join brown and Grey together - Live in
    Black - Live out
    Blue - neutral


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  • #7
    lisij
    Registered Users, Registered Users 2 Posts: 397 ✭✭lisij


    irishkopite 2011 wrote: »
    Join brown and Grey together - Live in
    Black - Live out
    Blue - neutral

    Would you mind helping me understand the diagram?

    Why grey goes with the brown?


  • #8
    irishkopite 2011
    Registered Users, Registered Users 2 Posts: 193 ✭✭irishkopite 2011


    lisij wrote: »
    Would you mind helping me understand the diagram?

    Why grey goes with the brown?
    The brown and grey are permanent lives, they are the same thing. Normally what would be done is one live brought to the unit and then just loop the lives but the nest has small terminals and its awkward to get two connections into one terminal, it was just done this way for handiness. When you take the nest off I'd guess that you will see the brown and grey joined in the same connector at the back. I hope I explained this well.


  • #9
    lisij
    Registered Users, Registered Users 2 Posts: 397 ✭✭lisij


    irishkopite 2011 wrote: »
    The brown and grey are permanent lives, they are the same thing. Normally what would be done is one live brought to the unit and then just loop the lives but the nest has small terminals and its awkward to get two connections into one terminal, it was just done this way for handiness. When you take the nest off I'd guess that you will see the brown and grey joined in the same connector at the back. I hope I explained this well.
    Thank you very much, works no problem.


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