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General| Type | Combi Boiler |
|---|---|
| Mounting | Wall-mounted |
| Output Power | 24 kW |
| DHW Output | 24 kW |
| Efficiency | 92% |
| ErP Heating Efficiency Class | A |
| ErP Water Heating Efficiency Class | A |
| Dimensions (H x W x D) | 700 x 400 x 300 mm |
| Weight | 31 kg |
| Fuel Type | Natural Gas |
| DHW Flow Rate | 9.8 l/min |
| Central Heating Max Pressure | 3 bar |
| Warranty | 7 years |
Details requirements for installation, commissioning, service, and repair according to regulations.
Lists relevant British Standards and codes of practice for installation.
Covers general, preparation, and technique advice for safe boiler handling.
Describes the Baxi Duo-tec 2 Combi GA Range boilers and their specifications.
Lists available optional extras and items included in the boiler packaging.
Identifies and lists the main components of the boiler.
Explains how the boiler operates in central heating mode.
Explains how the boiler operates for domestic hot water supply.
Details the boiler's frost protection and pump protection mechanisms.
Specifies appliance categories, electrical supply, and protection ratings.
Provides data for pressures, flow rates, and external dimensions.
Lists temperature settings, weights, and other technical parameters.
Provides detailed measurements and clearances for boiler installation.
Details compliance with Water Byelaws and guidelines for system water treatment.
Explains the boiler's bypass and the need for external system controls.
Details the process of filling and pressurising the central heating system.
Explains the expansion vessel and safety relief valve functions and requirements.
Details DHW circuit requirements and advice for hard water areas.
Provides recommendations for shower controls connected to the appliance.
Specifies suitable locations and required clearances for boiler installation.
Addresses ventilation requirements for boilers installed in compartments.
Outlines requirements for gas and electrical supply and connections.
Specifies requirements for boiler installation in rooms with baths or showers.
Provides general guidelines for siting balanced flue terminals.
Details horizontal flue systems, lengths, and support requirements.
Specifies flue lengths, trims, and accessories.
Explains the use and fitting of terminal guards and deflectors.
Covers risk assessment, gas check, unpacking, and wall plate fitting.
Details the process for flushing the heating or return pipe.
Instructions for lifting, fitting the boiler, and connecting the discharge pipe.
Instructions for connecting the condensate drain pipework.
Details fitting the flue elbow and securing the terminal.
Guides on making electrical connections for mains and external controls.
Outlines preliminary electrical system checks before commissioning.
Details steps for commissioning the boiler, including system checks.
Explains de-aeration and gas type check functions during commissioning.
Details how to check gas inlet pressure and gas rate during commissioning.
Explains how to adjust the boiler's gas type setting.
Covers replacing panels, user handover, and safety advice.
Explains how to drain the central heating system and activate de-aeration.
Recommends annual servicing and details safety checks and combustion tests.
Outlines the steps for performing an annual service inspection.
Details the procedure for changing spark ignition and flame sensing electrodes.
Instructions for removing and replacing the fan assembly.
Guides on how to change the air/gas venturi component.
Steps for removing and replacing the burner.
Instructions for replacing the boiler's internal insulation pieces.
Guides on replacing flue, heating, and DHW sensors.
Instructions for replacing the safety thermostat and pressure sensor.
Steps for replacing the pump head or the entire pump assembly.
Details the process of fitting a new automatic air vent.
Guides on replacing the Hall Effect sensor and pressure relief valve.
Details how to replace the heating pressure gauge.
Steps for replacing the plate heat exchanger and its seals.
Instructions for replacing the diverter valve motor or assembly.
Guides for replacing the Printed Circuit Board (PCB) and Removable Data Stick (RDS).
Details replacing the gas valve and the need for recalibration.
Instructions for replacing the expansion vessel.
Explains how to check the boiler's combustion performance and CO2 levels.
Guides on activating and performing the boiler's calibration function.
Details the procedure for adjusting the CO2 levels to calibrate the boiler.
Provides a wiring diagram for boiler components and external controls.
Lists initial checks for gas, water, and electrical supplies before troubleshooting.
Explains error codes displayed by the boiler and their meanings.
Details how to reset or de-activate the 'Service Due' message.
Details positioning requirements for the optional outdoor sensor.
Guides on wiring and connecting the optional outdoor sensor to the boiler.
Explains how to select the appropriate sensor curve for temperature control.
Details wiring and connecting the optional 7-day wired sensor.
Guides on wiring and connecting optional wireless sensors and receivers.
