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Detailed technical specifications including heat input, water flow rates, pressure, and electrical data.
Diagrams and details of the various connection points on the boiler.
Requirements and considerations for the gas supply to the boiler.
Details of the electrical supply requirements, including voltage, frequency, and earthing.
General safety requirements and procedures for electrical installation.
Procedure for checking and measuring the gas inlet working pressure.
Procedure for checking and measuring the main burner pressure.
Procedure for adjusting the central heating output and range rating of the boiler.
Tables detailing burner pressures and gas rates for different outputs and gas types.
Using diagnostic indicator lights to check boiler operation for DHW and CH.
Procedure for cleaning the burner and primary heat exchanger.
A systematic procedure for diagnosing and resolving boiler faults.
Fault finding steps for electrical supply issues, fuses, and the on/off control.
Fault finding procedures for issues related to the pump and fan operation.
Troubleshooting steps for central heating demand and external controls.
Fault finding for the flue system, air pressure switch, and ignition.
Troubleshooting gas valve issues and checking central heating system pressure.
Fault finding for burner operation, modulation, and diverter valve.
Troubleshooting steps for domestic hot water (DHW) operation.
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