Central Heating Digital Room Stat

Kuga

Hi,

After reading how it was a good thing to change an old dial room stat to the new digital ones I was hoping someone can help, I would like to replace my old 3 wire dial room stat with a new 2 wire digital one, the problem I have is on my old stat the wiring is as follows,
the terminals from left to right are marked - 4, 5, 1, 3, 2 and wired 4 = Blue, 5 = empty, 1 = Brown, 3 = empty & 2 = black.
On the new stat I have terminals L & SL which I assume to mean 'live' and 'switched live' could anyone advise on which of my wires need to go where on the new stat or is it not possible.
Many Thanks.

CashStrapped

This is a fantastic site, and has just the guide you need.

http://www.diynot.com/wiki/Electrics%3AHow-to-replace-a-room-stat

That should cover everything.

If you are still unsure, use the forum search function as this question can get asked once a week during winter.

C_Mababejive

The new stat may be voltage free with battery backup? Either way, the neutral is not required.