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Steps to turn on the boiler, including checks.
Procedure to shut down the boiler.
Mode for heating and hot water operation.
Setting the desired hot water temperature.
Setting the desired heating system temperature.
How to set the clock time correctly.
Programming the boiler's timer functions.
Manual clock control options.
Procedures for draining and refilling the system.
Information on the heating safety valve.
Information on the domestic hot water pressure relief valve.
Cleaning the boiler casing.
Caution regarding boiler casing removal.
Procedure for filling the heating system.
Pipe diameter for heating system connections.
Pipe diameter for hot water system connections.
Pipe diameter for gas connection.
Pipe diameter for domestic safety valve connection.
Pipe diameter for heating safety valve connection.
Connecting system pipework to fixing jig fittings.
Routing of safety valve discharge pipes.
Gas supply requirements and testing procedures.
Regulations for gas appliance installation and servicing.
Recommended space around the boiler for servicing.
Marking hole position for rear flue installation.
Marking hole position for side flue installation.
Instructions for cutting the flue hole in the wall.
Notes on flue hole cutting and fall direction.
Minimum acceptable spacings for the flue terminal.
Information on required terminal guards.
Ventilation requirements for boiler enclosures.
Installation compliance with relevant regulations.
Warning about handling sheet metal edges.
Suitability for top outlet flue connection.
Measuring flue pipe lengths for installation.
Using flue extension kits for longer runs.
Calculating flue lengths when using extension kits.
Notes on cutting lengths for extended flues.
Steps for assembling the flue system components.
Permissible length and restrictor for concentric flue.
Requirement for earthing the boiler.
Connecting system controls to the electrical supply.
Recommended isolation methods for the electrical supply.
Alternative plug and socket usage guidelines.
Importance of continuous mains supply for operation.
Warning about applying external voltage to terminals.
Wiring compliance and guarantee implications.
Connecting room thermostats and external controls.
Purging air from the gas supply.
Steps for filling the heating system.
Removing air from radiators after filling.
Checking and refilling system pressure.
Steps to turn on and light the boiler.
Procedure to shut down the boiler.
Setting heating and hot water mode.
Setting the maximum heating temperature.
Adjusting the boiler's heating output.
Presetting maximum heating temperature.
Indication and rectification of no gas supply.
Indication and rectification of low system pressure.
Fault codes and symbols for other issues.
Overview of the boiler's general safety features.
Safety response to flue obstructions.
Boiler shutdown due to overheating.
Boiler behavior during power supply interruptions.
Boiler's built-in frost protection mechanism.
Adjusting the gas valve settings.
Setting minimum gas pressure.
Setting maximum gas pressure.
Adjusting the built-in bypass.
Steps for boiler service preparation.
Removing the upper front panel.
Removing the sealed chamber cover.
Accessing the lower part of the boiler.
Removing the boiler side panels.
Removing the combustion chamber cover.
Procedures for burner removal and cleaning.
Procedures for heat exchanger inspection and cleaning.
Reassembling removed parts in reverse order.
Checking the flue system for blockages.
Checking fan operation.
Cleaning the cold water inlet filter.
Replacing the domestic hot water thermistor.
Replacing the central heating thermistor.
Replacing the storage vessel thermistor.
Replacing the fan.
Replacing the air pressure switch.
Replacing the domestic water flow sensor.
Replacing the printed circuit board (PCB).
Replacing the pump.
Replacing the domestic hot water heat exchanger.
Replacing the system pressure sensor.
Replacing the gas valve module.
Replacing the 3-way valve head.
Replacing the 3-way valve/bypass housing.
Replacing the modulating coil.
Replacing the gas valve.
Replacing the central heating safety valve.
Replacing the storage vessel safety valve.
Replacing the heat exchanger.
Replacing the central heating expansion vessel.
Replacing the high limit thermostat.
Replacing combustion chamber insulation.
Replacing the burner.
Replacing burner injectors.
Replacing the ignition electrode.
Replacing the flame sense electrode.
General| Fuel Type | Gas |
|---|---|
| Output | 28 kW |
| Domestic Hot Water Output | 28 kW |
| Energy Efficiency Class | A |
| Efficiency | 93% |
| ERP Rating | A |
| Max working pressure | 3 bar |
| Water connections | 15 mm |
| Mounting | Wall-mounted |
| Fuel | Natural Gas |
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