Welcome To ATAG Academy

Welcome to the ATAG Academy! An educational hub dedicated to providing valuable resources and training for heating professionals. Discover the wide range of courses and resources available at the ATAG Academy and how they can help you enhance your skills and knowledge. Join us on this journey of professional development.

Unboxing The Boiler

Get a firsthand look at the unboxing process and the components that come with your boiler purchase. We share important tips on handling and inspecting your new ATAG boiler upon delivery. Follow these instructions to ensure a smooth and successful installation.

ATAG Boiler Hanging & Connecting

In this video, we guide you through the process of hanging the jig, boiler, and pipework options. Learn how to correctly position and secure the jig for optimal boiler installation. We also discuss various pipework options, providing insights into the best practices for efficient and professional installation.

Fluing Options

Dive into the topic of fluing options, specifically horizontal and vertical configurations. Explore the benefits and considerations of each flue type for your boiler system. Gain valuable insights to help you make an informed decisions when it comes to flue installations. Discover the best fluing options for your specific requirements.

External Controls Options

An introduction to all control options available on the iSeries range of ATAG boilers.

Water Quality

In this video, we highlight the signifcance of water quality in maintaining the longevity and efficiency of your heating system. Learn about the impact of water quality on boiler performance ad how to ensure optimal water conditions. We share expert advice on testing, treating and maintaining water quality to protect your heating system.

Commissioning & Parameters

An introduction into the significance of parameters and commissioning in maintaining your boiler's optimal performance. Learn about the essential parameters to consider and how to set them correctly for efficient operation.

Explore our extensive library from technical guides to product information sheets.
Technical Guide 2019

Technical Guides

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Installer Economiser IMAGE-1

Product Information Sheets

iR Range Installation Guide

Installation Guides


Explore all of our guides

Frequently Asked Questions


How do I speak to someone to apply to become an ATAG Selected Partner?

A: The ATAG team is on hand to chat through any questions you have, whenever you have them. If you’d prefer not to apply online here, you can call us on 0800 254 5065 to book a product demonstration at a time and place that suits, and then complete the application with one of our Technical Product Managers

How are ATAG Selected Partners assessed?

All ASPs must apply to register, with proof that they are fully Gas Safe Registered installers before any application can be processed. We look at the number of installs you are currently performing and will meet you onsite for your first installation to assess competency. We do not ask for any financial or employment information regarding your business.

What do I do with the boiler that has a fault code 118?

Error code 118 could mean that the system pressure is too low and you may see that the system pressure gauge indicates that the pressure in the system is below the 1 bar pressure.

The pressure within the system can be seen in two ways. There is an analogue gauge, which can be found under the bottom left hand side of the boiler or you can find a digital reading from the digital display of the control panel. The digital display can be seen by pressing the Eco button for 6 seconds and then scroll through (tap + plus button) to ‘A6’ which will display the water pressure.

The system pressure should be set around 1.0 – 1.2 bar when the water is cold.

When the system is working and the water is heated up within the system, water expands due to heat and you may see the pressure rise up to around 1.8 – 2.4bar when hot. This is normal as water system pressure increases due to heat.

So we are looking for the system pressure to be set around 1.0 – 1.2 bar when the water is cold.

Turn off any clocks and room thermostat for heating or hot water controls.

On the iC and iC Economiser Plus models, to re-pressurise the system you will need to find the filling loop (copper ‘U’ shaped tube with two nuts at each end). On the underside of the boiler there is a filling loop position where this copper ‘U’ shaped tube will connect between the small blue and black isolation valve connection. If not in position, remove the caps and install as shown and tighten up the nuts hand tight.

The taps should be opened a quarter of a turn and the water will start to refill the system (water should be heard filling the system). You should see the pressure gauge rise back up between 1 bar and 1.2 bar pressure and then stop filling. The error code 118 will stop and the boiler will now operate. If the error code 118 is still active, fill up the system a little more but not over 1.5bar.

The display should now show ‘OK’, which means the pressure level is correct and the boiler is ready to operate.

(If you do fill the system too much and the pressure gauge is too high, just bleed water from a radiator until the pressure on the gauge goes down to below 1.2 bar).


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