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plumbing and heating: wire a towerstat rf into my ideal isar


 
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alfieboy1

from United Kingdom

Joined: 17 Aug 2010
Posts: 7
Location: Essex,
United Kingdom

PostPosted: Tue Aug 17, 2010 3:40 pm Reply with quote

Hi I wonder if anyone can help im trying to wire a towerstat rf into my ideal isar HE 24 on the boiler wiring I have a 5 core cable BLU BROWN BLK GREY & EARTH THE BLK AND GREY are not connected and there is a link wire between the 2 terminals marked L1 & L2 the BROWN is wired into L3 Earth into Earth and BLU into N on the back of the stat I have a N & L & NO & NC and a COMM for 230v wiring it looks like you put a link between L & COMM N to N can anyone tell me what L1 and L2 are and in what order are they SL on or SL off as note to sure what gos where
Regards Alfieboy1
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D_Hailsham

from United Kingdom

Joined: 18 Oct 2007
Posts: 8455
Location: Sussex,
United Kingdom
Thanked: 969 times

PostPosted: Tue Aug 17, 2010 4:38 pm Reply with quote

There are to ways you can wire this.

1. Link L to Common at the Stat and connect NC (SL ON) to L2

2. Connect Common to L1 and NC (SL ON) to L2

In both cases, there must be a supply to L and N of the Stat; and the link must be removed between L1 and L2
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alfieboy1

from United Kingdom

Joined: 17 Aug 2010
Posts: 7
Location: Essex,
United Kingdom

PostPosted: Tue Aug 17, 2010 5:43 pm Reply with quote

D_Hailsham wrote:
There are to ways you can wire this.

1. Link L to Common at the Stat and connect NC (SL ON) to L2

2. Connect Common to L1 and NC (SL ON) to L2

In both cases, there must be a supply to L and N of the Stat; and the link must be removed between L1 and L2



Hi thanks for promp reply so there is no need for the L1 to be used I did try it this way with just a switched live and got no heating when called for on stat got the fan blade symbol come up but no heating i did wire a honeywell stat between L1 and L2 and that works fine but that was only on a fly lead
Regards Alfieboy1
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D_Hailsham

from United Kingdom

Joined: 18 Oct 2007
Posts: 8455
Location: Sussex,
United Kingdom
Thanked: 969 times

PostPosted: Tue Aug 17, 2010 6:39 pm Reply with quote

Have you checked that the two parts of the Towerstat talk to each other?

First check the RF addresses are the same (page 7 - RF Address Code setting)), then check communication between the two parts (page 17 - testing RF transmission range).

Do you have a multimeter? If so you can check the voltages.
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