Help Changing Horstmann 425 Diadem For Drayton Tempus 6

[W4rdie]

Help anybody? I am wanting to change my Horstmann 425 Diadem analogue heating panel for a Drayton Tempus 6 for my gravity fed hot water/pumped central heating system, the Diadem has a 9 pin backplate and the Tempus only has 6, I have the diagrams from both manufactures but neither seem to explain anything clearly, can anyone help please ??

 

[sparkieno1]

Although not a difficult job you should get an electrician or heating engineer.Not for DIY IMO.

 

[petit_pablo]

The horstman has 3 live connections. If i remember correctly its:

E - N - L - Hw On - Common - Hw Off - Heat On - Common - Heat off (not used).

I would imagine the replacment clock has the 1 live and no commons.