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Can anyone Please help!!!
I have a really old Baxi back boiler with a Horstmann Coral dial timer that has stopped working and need to replace with a new digital one. Did some research online and saw that it could be replaced with a Sunvic Sunpro2000 which i have now purchased but am a bit confused as to which wire need to go where as the old Coral has 8 wiring terminals (2 are empty) and the new one only 6.
There are 5 wires going into the old timer from various parts of the system as listed below:
A. MAINS WIRE (2 CORE RED/BLACK)
B. CENTRAL HEATING PUMP (3 CORE BLACK/RED/NEUTRAL)
C. HONEYWELL CH VALVE (3 CORE BLUE/BROWN/NEUTRAL)
D.HOT WATER PUMP (3 CORE BLUE/BROWN/NEUTRAL)
E. CABLE GOING TO BACK BOILER (4 CORE BLUE/BROWN/BLACK/NEUTRAL)
The Coral has 8 terminals numbered 1 to 8 and the wires listed above go to the following terminals:
1.RED MAINS (A) / BROWN BACK BOILER (E)
2.BLACK MAINS (A) / BLUE HW PUMP (D)
3.BLUE HONEYWELL (C) / BLACK CH PUMP (B) / BLUE BACK BOILER (E)
4.BROWN HONEYWELL (C) / RED CH PUMP (B)
5. EMPTY
6.EMPTY
7.BROWN HW PUMP (D)
8.BLACK BACK BOLIER (E)
(7 & 8 ALSO HAVE A SMALL RED BRIDGE CABLE LINKING THEM)
The new Sunpro 2000 has 6 terminals as shown below :
LIVE, NEUTRAL, 1-HW OFF, 2-CH OFF, 3-HW ON, 4-CH ON
SO CAN SOMEONE PLEASE GIVE ADVISE WHICH CABLES NEED TO GO WHERE ON THE NEW TERMINAL
I have a really old Baxi back boiler with a Horstmann Coral dial timer that has stopped working and need to replace with a new digital one. Did some research online and saw that it could be replaced with a Sunvic Sunpro2000 which i have now purchased but am a bit confused as to which wire need to go where as the old Coral has 8 wiring terminals (2 are empty) and the new one only 6.
There are 5 wires going into the old timer from various parts of the system as listed below:
A. MAINS WIRE (2 CORE RED/BLACK)
B. CENTRAL HEATING PUMP (3 CORE BLACK/RED/NEUTRAL)
C. HONEYWELL CH VALVE (3 CORE BLUE/BROWN/NEUTRAL)
D.HOT WATER PUMP (3 CORE BLUE/BROWN/NEUTRAL)
E. CABLE GOING TO BACK BOILER (4 CORE BLUE/BROWN/BLACK/NEUTRAL)
The Coral has 8 terminals numbered 1 to 8 and the wires listed above go to the following terminals:
1.RED MAINS (A) / BROWN BACK BOILER (E)
2.BLACK MAINS (A) / BLUE HW PUMP (D)
3.BLUE HONEYWELL (C) / BLACK CH PUMP (B) / BLUE BACK BOILER (E)
4.BROWN HONEYWELL (C) / RED CH PUMP (B)
5. EMPTY
6.EMPTY
7.BROWN HW PUMP (D)
8.BLACK BACK BOLIER (E)
(7 & 8 ALSO HAVE A SMALL RED BRIDGE CABLE LINKING THEM)
The new Sunpro 2000 has 6 terminals as shown below :
LIVE, NEUTRAL, 1-HW OFF, 2-CH OFF, 3-HW ON, 4-CH ON
SO CAN SOMEONE PLEASE GIVE ADVISE WHICH CABLES NEED TO GO WHERE ON THE NEW TERMINAL