Thanks for the quick advice!
Just to clarify the first 2 steps.
1. Heat link live into any of the 3 terminals on the far left.
So the live from heat link can be placed in numbers 1,2 or 3 on the WC?
2. Link live in 2 and 5 in HL.
So connect the live from WC above into 2 and 5 on heatlink...