Baxi 424 Combi 2 User Manual

Please keep these instructions in a safe place.
If you move house, please hand them over to the next occupier.
United Kingdom
en
User Guide
High-efficiency wall-hung condensing gas boiler
424 Combi 2 - 430 Combi 2
424 Combi LPG 2 - 430 Combi LPG 2

Baxi 424 Combi 2 Specifications

General

Boiler Type	Combi
Mounting	Wall-mounted
Output	24 kW
Dimensions (HxWxD)	700 x 400 x 300 mm
Fuel Type	Natural Gas
Hot Water Flow Rate	9.8 l/min
Max. working pressure	3 bar
Central Heating Output	24 kW

Summary

Safety

General Safety Instructions

Key safety guidelines for operating the boiler and preventing hazards.

Recommendations

Advice on system checks, accessibility, and proper maintenance for optimal performance.

Liabilities

Clarifies the responsibilities of users, installers, and the manufacturer.

About this manual

General

Introduction to the manual's purpose, intended audience, and safety warnings.

Symbols Used

Explains the meaning of various danger levels and symbols used in the document.

Abbreviations and Glossary

Provides definitions for technical terms and abbreviations used throughout the manual.

Technical Specifications

Homologations

Details certification numbers, NOx class, and boiler type classifications.

Technical Data

Comprehensive technical data including heat output, energy efficiency, and consumption figures.

Dimensions and Connections/Clearances

Illustrates boiler dimensions and identifies all pipe connections and clearances required.

Description of the Product

General Description

An overview of the boiler's purpose, features like low emissions, high efficiency, and compact design.

Operating Principle

Explains air-gas adjustment, combustion process, and how heating and hot water are produced.

Control Panel Description

Detailed explanation of the control panel, knobs, icons, and button functions.

Accessories & Options

Information on available accessories and optional features for the boiler.

Operation

Start-up

Step-by-step guide for the initial power-up and boiler initialization process.

Changing the Heating Flow Temperature

Instructions on how to adjust the desired water temperature for the heating system.

Changing the Domestic Hot Water (DHW) Temperature

Guidance on setting and adjusting the temperature for domestic hot water.

Shutdown

Procedures for safely switching off the heating and domestic hot water functions.

Frost Protection

Details on the boiler's automatic frost protection feature and its operation.

Settings

Access to User Parameters

Method for navigating and accessing user-configurable settings on the control panel.

List of User Parameters

A comprehensive table detailing user parameters, their factory settings, and ranges.

Maintenance

General

Overview of general maintenance, annual servicing, and warranty requirements.

Maintenance Instructions

Routine checks, cleaning advice, and pressure monitoring for boiler upkeep.

Filling the Installation

Steps for re-pressurising the heating system if water pressure is too low.

Venting the Installation

Procedure for removing air from the heating circuit to ensure quiet operation.

Maintenance Message

Explanation of the 'SVC' indicator for scheduled maintenance.

Troubleshooting

Temporary and Permanent Faults

Classification and overview of fault codes displayed by the boiler.

Error Codes

Detailed list of temporary and permanent fault codes with causes and solutions.

Fault Finding

A guide to diagnosing and resolving common operational problems and issues.

Decommissioning

Decommissioning Procedure

Instructions for safely disconnecting and preparing the boiler for removal.

Disposal

Disposal and Recycling

Guidance on environmentally responsible disposal and recycling of the appliance.

Environmental

Energy Saving

Practical tips for optimizing energy efficiency and reducing consumption.

Room Thermostats and Settings

Advice on using room thermostats effectively for comfort and energy savings.

Warranty

General

Conditions necessary for maintaining the validity of the boiler's warranty.

Standard Warranty Terms and Conditions

Comprehensive details on warranty registration, service requirements, and claims.

Appendix

Product Fiche - Combination Boilers

Technical data and energy efficiency classifications for combi boilers.

Package Fiche - Boilers

Information regarding the energy efficiency of complete boiler packages.

Package Fiche - Combination Heaters (Boilers or Heat Pumps)

Energy efficiency details for combined heating systems including solar contribution.