Thanks for your replies :)
I think that the manual is misleading because there is a mains loop switch from the boiler, and I have tested it with a multimeter and one of the two contacts has 230v AC.
There is another low voltage loop which you remove the jumper from to enable the use of a mains...
Hello,
I mistakenly purchased a dual channel Hive self install from Amazon - but didn't realise why it was so cheap.
Anyway I thought - this should work - I can just ignore the hot water functionality.
My boiler is a Heatline S24 Compact Combi, which did have an external controller fitted...