Help required in wiring of a new digital Central heating timer control

Cocolewis

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

TELLIT01

Get somebody in who actually knows what they are doing. It shouldn't cost more than a couple of hours labour and is infinitely preferable to electrocuting yourself.

EssexExile

Search the web for conversion charts. If you are novice though they will be as clear as mud!

Owain_Moneysaver

Please note that neutral is a designation and not a colour. Do you mean the wire is grey, or unsleeved copper (which should all be green/yellow sleeved and connected to earth, but some installers will have wrongly reused the earth wire for something else)?

coffeehound

Hot water pump?

Owain_Moneysaver

I can't find a terminal 7 in any Coral wiring diagrams online. Given the age of the system it might need some attention to work with the desired replacement programmer.