I can understand everything except the following:
A) Boiler (B)
2...Switched live to TB1 (via the P)
Which "P" terminal does it use as a junction?
B)...Programmer (P)
2...nothing
What is connected to "P" terminal 1? Do the terminals on "P" have any labels, apart from numbers?
Terminal Block (TB)
1...to B2/V4/
Which "B" and "V" terminals do you mean?
2...to P1/P(N)/V3/CT2
Again,which terminals do you mean?
What are the model numbers of the valve, thermostats and programmer?
A) Boiler (B)
2...Switched live to TB1 (via the P)
Which "P" terminal does it use as a junction?
B)...Programmer (P)
2...nothing
What is connected to "P" terminal 1? Do the terminals on "P" have any labels, apart from numbers?
Terminal Block (TB)
1...to B2/V4/
Which "B" and "V" terminals do you mean?
2...to P1/P(N)/V3/CT2
Again,which terminals do you mean?
What are the model numbers of the valve, thermostats and programmer?