Breakdown Bible PDF updated 2025

The Breakdown Bible was designed as a

way to help people learn the sequences

of heating wiring.

When I began my journey into

breakdown and repair, I found it difficult

to get my head around the wiring

diagrams. I began drawing the

components out in order of sequence to

help me understand… the first

Breakdown Bible was born.

I’d like to thank everyone that has

purchased one and hope it helps you

become confident in heating wiring, the

way it has helped me.

Y plan, S plan and combi boiler wiring

By purchasing this item you are agreeing to the statutory copyright laws that you will not print, share or sell this literature and will solely be for personal use