Analogue Heat Control to Digital - Wiring?

[Sapper]

Hi - my heating system is controlled by an Flash Immermat timer, which packed it in yesterday (switch came off). I thought it would be a good opportunity to replace it with an electronic version with a boost button/7 day timer etc. Got an Invensys/Drayton Tempus 1 controller in B&Q today

I thought I would be able to wire it using like for like, but it's not so straightfoward - can anyone out there help me out? How do I wire the new controller ( wiring diagram linked below) from the old controller (wiring diagram also linked below).

Or do I have the wrong type of controller?
Old timer wiring
New timer wiring

 

[D_Hailsham]

heating system is controlled by an Flash Immermat timer,

This timer is usually used for immersion heaters.

What sort of heating system do you have?
Combi boiler or traditional with a HW cylinder (usually in airing cupboard)?
Make and model of boiler

Got an Invensys/Drayton Tempus 1 controller in B&Q today

May be OK;depends on your system, so need answers to questions above

 

[Sapper]

Hi - it's a traditional heating system with a cylinder in the airing cupboard. The boilers a Potterton Subprima gas boiler....Thanks

 

[D_Hailsham]

Hi - it's a traditional heating system with a cylinder in the airing cupboard. The boilers a Potterton Subprima gas boiler....Thanks

Do you have any motorised valves? If so how many and what type?
How is the temperature of the HW controlled?

The Tempus 1 is a single channel controller so it can only be used to control when the boiler goes on and off.