central heating timer

nige

I have a flash immermat timer and it has stopped work I am upgrading it to the Flash programmer plus 1
How would I wire up the new one

on the old timer (flash immermat) its wired like this

1 Phase in = 2 brown wires live
2 N in = 2 blue wire nuetral
3 N out = 1 blue wire nuetral
4 Phase out = 2 brown wires

wire diagram for the old flash immermat
http://download.hager.com/controls.hager.com/files_download/Notices%20PDF/9419_527_01_GB.pdf

The new timer has the following
230v ac mains input
L
N
and then has these 2 also
1 = live to boiler
2 = link to L (NB. do not link L+2 if 24 volt required or volt free contact required)

The heating boiler is a potterton suprima
The hot wtaer also gets hot when the heating is on



Thanks
Nige

ntpm

Basically the old timer had internal wiring that made a contact (linked) L IN to L out when required...on "time" or if you selected "constant".

N in and N out were also linked internally. (Perminent link)


The new timeclock makes a contact between 1 and 2. (basically making a switch In and OUT).
(option to allow you switch 240V or volt free).
As your original clock switched 240V Lin to Lout you need a link wire.

So you need to put a link wire between
Terminal 2 and L -= this will give 240V on the input.
Terminal 1 now becomes your Live Out.


To clarify this is how i see your NEW wiring terminal

L= two live Brown cable (as before L in)
plus link to Terminal 2

N= 3 blue cables ( 2 from original N in and 1 from original N out)

terminal 1 (live to boiler) = two live brown cables ( as before L out)

terminal 2 ( link) = link cable to L terminal.

nige

thank you ill give that a go