worcester 12ri boiler wiring problem help

[shaungde]

just been asked to connect boiler with danfoss fp715 si programmer & danfoss 3 port valve.the problem i have encountered is the boiler switched live demand has 1 connection & the danfloss programmer has hot water only, heating only or both on together. if i connect the switched live to either terminal, i can only get a feed on 1 or the other! i can only think of introducing a 2 gang manual switch, which would allow me to link out hw & ch, by switching either feed off at switch it will allow the boiler to be used in all modes. i'm sure i shouldnt really have to do this. antbody know what i should be doing

[Slowspark]

The boiler switched live is probably to fire the boiler from the heating side and would normally be fed from the orange of the 3 port valve.

You may find this link to some more explainations and diagrams useful:
electriciansblog.co.uk/2012/01/central-heating-boiler-electrical-wiring-connection-diagrams-for-electricians/