CENTRAL HEATING CONTROLS NIGHTMARE!!!

[PETEINENGLAND]

WANTING TO CHANGE STAT ON AN EXISTING NON COMBI SYSTEM FROM DIAL TYPE TO DIGITAL (BOTH HONEYWELL)


THE EXISTING DIAL TYPE HONEYWELL T6360 IS CONNECTED TO A HONEYWELL ST699B TIME CONTROL

HAVING REMOVED THE COVER THE T6360 IS WIRED AS FOLLOWS

YELLOW TO 1
BLUE TO 2
RED TO 3
EARTH WIRE TO EARTH TERMINAL

SO I NEED TO KNOW WHICH WAY TO CONNECT THE THREE WIRES TO THE TERMINALS ON THE NEW HONEYWELL DIGITAL DT200 MARKED A, B, C - STRANGELY THE NEW ONE HAS NO EARTH???

OR PUT ANOTHER WAY WHICH TERMINALS ON T6360 ARE SAME AS ABC ON DT 200?

ASKED AN ELECTRICIAL AND SHOWED HIM WIRING DIAGRAMS FOR BOTH STATS AND HE TOLD ME :-

1 = A
2 = B
3 = C

SO I WIRED

YELLOW WHICH WAS ON 1 TO A
BLUE WHICH WAS ON 2 TO B
RED WHICH WAS ON 3 TO C

SWITCHED BACK ON - TIME CONTROL ST699 BLEW UP - THANKS MATE!

NOW GOT TO PAY £55 FOR NEW PROGRAMMER AND DONT WANT TO DO SAME AGAIN

PLEASE HELP ANYONE!

PETE MALTBY

THANKS


_____________________________
lynda, moderator

please note forum rules 1a & 6