Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Apt Timer for Central Heating

  • 08-01-2015 11:41AM
    #1
    leinster93
    Registered Users, Registered Users 2 Posts: 326 ✭✭


    Was looking to replace the current timer for the central heating with an APT timer. When I took the cover off the current one i saw there's a brown, grey, green/yellow and black wire. The APT timer has a live in/live out, neutral and an earth connection.
    Taking the brown as the live, grey as the neutral and the green/yellow as the earth, I'm a little stumped as to what to do with the black wire. Is there a protocol for such?


Comments

  • #2
    Pete67
    Registered Users, Registered Users 2 Posts: 1,257 ✭✭✭Pete67


    Black is the switched live - connect it to the live out connection on the new timer. Both browns go to the live in terminal, both grays to the neutral terminal, and both green/yellows to the earth terminal. Make sure the supply is isolated before working on the wiring.


  • #3
    Tom44
    Registered Users, Registered Users 2 Posts: 951 ✭✭✭Tom44


    Pete67 wrote: »
    Black is the switched live - connect it to the live out connection on the new timer. Both browns go to the live in terminal, both grays to the neutral terminal, and both green/yellows to the earth terminal. Make sure the supply is isolated before working on the wiring.

    Above is correct.
    Brown perm. Live to boiler is for a pump overrun when clock switches off boiler.

    "ALL Boilers" should also have a switched 3 or 5 amp fuse switch on supply to timeclock. This is to protect the appliance and also provide a way of turning of all power, (includung perm. live) for boiler servicing.
    Fuse board switch is not enough.


  • #4
    leinster93
    Registered Users, Registered Users 2 Posts: 326 ✭✭leinster93


    Thanks for all the replies. Very helpful.


Advertisement