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Statutory requirements for gas appliance installation and safety.
Details on air and flue duct types and compatibility.
Legal and regulatory requirements for appliance installation.
Guidelines for selecting a suitable location for appliance installation.
Recommendations for flue terminal placement according to standards.
Requirements and considerations for the gas supply connection.
Electrical connection requirements and safety precautions.
Procedures for preparing the installation wall and marking fixings.
Procedures for filling and venting the central heating system.
Steps for initial startup, checking gas pressure, and burner operation.
How to diagnose and reset lockout conditions.
How to perform a combustion analysis and check gas pressure.
Procedure for removing and replacing the gas control valve, fan, and burner.
A functional wiring diagram showing electrical connections.
General checks to perform before diagnosing faults.
Information on the digital display error codes and reset procedure.
Referencing diagnostic charts for troubleshooting appliance failures.
Troubleshooting steps for domestic hot water demand issues.
Troubleshooting steps for central heating demand issues.
Table detailing fault codes, reasons, and actions.
Table detailing blocking codes, reasons, and actions.
Procedures for removing, replacing, and setting up the gas control valve.
Detailed steps for gas control valve replacement.
Setup for combustion check after gas valve replacement.
Procedure for replacing the heat exchanger, including thermal fuse checks.
Procedure for replacing the control PCB.
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General