I've recently been given a Drayton Digistat 3 programmable thermostat. In it there are 3 connectors:-
1- c
2- sat
3- call
the boiler has 4 connections :-
1 Ns
2 Ls
3 Lr
4 Spare
2 & 3 are currently linked
Could someone please tell me the wiring configuration for the programmer/thermostat
Thanks.......Eric :-)