This is our Technical Information page.

You will find here links to various publications such as installation notes, service manuals, hints and tips etc.
If you need to speak to one of our technical team, please ensure you have the invoice or order number your enquiry relates to at hand when you call our technical helpline.
We regret we cannot discuss in-depth technical matters which do not relate to an existing purchase.
You can always send an email with any questions to

Testing Procedure for Ideal Isar fans

Gledhill GT155 Fitting instructions

Gledhill GT152 Fitting Instructions

Glow-worm Micron and Hideaway Jumper Setting

Glow-wom Micron and Hideaway Thermistor Problem

Johnson and Starley Fault Finding Guide

Potterton Suprima Electrode Lead Problems

Potterton Suprima Fault Finding Guide

Links to manuals for boilers.

Baxi, Main & Potterton Manuals includes many other makes also.

Biasi Boiler Manuals

Ideal Boiler Manuals

Glow-worm Boiler Manuals