Old Randall Programmer

[Reidyboy31]

Hello everyone, some assistance please? I am looking to add a smart thermostat to my heating system and am looking for a wiring diagram for the existing programmer - it is an old Randall 702 circa 1986 and is a tan colour any help would be appreciated
Thanks

 

[ianmcd]

if you remove the randall from its back plate it should have the wiring diagram on the back, if it doesnt post a pic of the wiring

 

[Reidyboy31]

thanks for the reply, I have checked and there is no diagram, I am just in the process of reading through a conversion table on the Danfoss website and I think I may be getting somewhere

Thanks again