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Topic Title: Replacing old electro mechanical timer
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Created On: 16 April 2014 11:36 PM
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 16 April 2014 11:36 PM
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Posts: 1
Joined: 16 April 2014

Hi, I'm new here and was looking for a bit of help from anyone who may be familiar with mechanical timers. I am replacing an old Horstmann 423 diamond timer in my house.I am replacing with a new Horstmann 425 tiara.When I removed the old one I noted that I had 3 black wires going to N, 3 bare wires going to earth, and 3 red wires.The first went to 1, which was linked to L and 3.The second went to 2, and the 3rd wire went to 4.Could anyone give me any assistance as to hook up the new Tiara timer?Thanks.
 17 April 2014 06:58 AM
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Posts: 82
Joined: 07 August 2013

On the new tiara, blacks are all neutrals (N), bare copper is earth, should be sleeved accordingly with green/yellow sleeving. The first red is permanent live (L) requires links to both 2&5, the second red (2) should go in 1 and third red (4) should go in 4.


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