Hi. I have a 7 yr old Worchester 24i. Im trying to install a Drayton digistat+3 programmable room stat but with no joy. On the stat i have a 3 way terminal which reads: C,ON,OFF.
On the boiler i have a 6 way terminal block as follows: CN,CI,CL,RN,RI,RL with a link pin between RI and RL...