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Need help?Do you have a question about the Saunier Duval Themaclassic F18E SB and is the answer not in the manual?
Legal requirements for gas appliance installation and servicing by competent persons.
Safe electrical connection, earthing, polarity, and wiring standards.
Advice on safe lifting and handling of the appliance.
Procedure for filling the F24E boiler system and resetting.
Procedure for filling the F18E SB boiler system and resetting.
Overview of F24E/F18E SB boilers, features, and installation notes.
Safety feature for obstructed flue operation.
Automatic safety shutdown upon overheating.
Details on the safety valve and its handling.
Recommendations for regular checks, cleaning, and servicing by competent persons.
Guidance on using approved spare parts and contacting service.
How to adjust the central heating temperature setting.
How to adjust DHW temperature for F24E models.
Understanding the boiler's ON indicator light and fault signals.
Instructions for setting time and programmes on the analogue programmer.
Instructions for using the digital programmer, including keypad and display.
Guide to setting the current time and day on the programmer.
Steps to program heating schedules for 24-hour or 7-day operation.
How to temporarily or permanently override programmed settings.
Common problems and solutions for programmer operation.
Detailed heating, hot water, combustion, electrical, and gas specs for F24E.
Detailed heating, combustion, electrical, and gas specs for F18E SB.
Warning about handling sharp sheet metal parts to prevent injury.
Compliance with UK and IE regulations for installation and safety.
Requirements for gas supply installation in GB and IE, including pressure.
Guidance on piping, expansion vessels, and components for safe operation.
Information on the automatic bypass and minimum flow rates.
Instructions on filling the F24E system using the integral filling device.
Methods for filling the F18E SB system, noting no permanent mains connection.
Requirements for DHW circuits, fittings, and flow restrictor installation.
Recommendations for scale reducers in areas with hard water.
Diagram and list of components for the F24E boiler.
Diagram and list of components for the F18E SB boiler.
Recommended clearances and wall mounting for the boiler.
Requirements for fitting a terminal guard if persons could contact it.
Overview of available flue systems and extensions.
Ventilation requirements for boilers installed in cupboards.
Description of the components included in the fixing jig pack for installation.
Instructions for cutting the wall opening for the flue, including slope.
Connecting pipework and gas supply according to regulations.
Warning about sharp edges during installation.
Steps for lifting, fitting, and connecting the boiler to the bracket.
Instructions for extending the safety valve discharge pipe.
Details the kit of parts for the telescopic flue assembly.
Information on rear and side flue lengths and dimensions.
Instructions on how to cut the flue pipe, avoiding burrs.
Step-by-step guide for fitting the telescopic flue assembly.
Details the kit for the horizontal top flue system, including length suitability.
Diagrams showing rear and side flue configurations and dimensions.
Instructions for cutting the flue, emphasizing no burrs or sharp edges.
Detailed steps for assembling and fitting the horizontal top flue.
Information on replacement supply cables.
Warnings and connection methods for external controls.
How to connect external controls that use mains voltage.
Steps for performing preliminary electrical system checks.
Reference to section for gas type conversion.
Step-by-step guide to filling the heating system and bleeding air.
Importance of bleeding air and potential causes of frequent refilling.
Procedure to adjust the central heating output using potentiometers.
Explanation of dip switch functions for pump and heating temperature.
Guidance on demonstrating operation, maintenance, and safety to the user.
Procedure for changing the gas type, requiring a conversion kit.
Information on adjusting the built-in bypass valve.
How to perform a combustion analysis using a sampling point.
Steps for draining, isolating, and checking gas soundness.
Instructions for removing the front and control panels.
Steps for removing the sealed chamber and side panels.
Instructions for removing the combustion chamber cover and burner.
Checking ignition/flame gaps and removing the fan.
Instructions for cleaning the heat exchanger.
Cleaning or replacing the domestic water inlet filter.
Cleaning or replacing the central heating filter.
Checking seals, insulation, and flue system.
General instruction to reassemble parts in reverse order.
Locating and resetting the overheat thermostat.
Troubleshooting steps for when the boiler has no heating output.
Troubleshooting steps for no hot water with heating operational.
Diagnosing faults where the burner lights but goes out without flame detection.
Troubleshooting flame detection issues.
Troubleshooting when the burner doesn't light but spark is present.
Diagnosing issues with room temp and radiator performance.
Troubleshooting steps for luke-warm water at taps.
Diagnosing issues with the fan not starting.
Troubleshooting fan issues when no sparks are detected.
Instructions for draining the central heating circuit, DHW, and boiler.
Procedure for replacing the central heating thermistor.
Steps to remove and replace the fan and air pressure switch.
Cleaning or replacing water inlet and heating filters.
Procedures for replacing the burner and its injectors.
Steps for replacing the burner injector assembly.
Procedure for replacing the overheat thermostat.
Steps for replacing ignition and flame sense electrodes.
Steps for removing and replacing the heat exchanger.
Procedure for replacing combustion chamber insulation.
Steps for removing and replacing the main control board.
Steps for replacing user interface board and mains switch.
Procedures for replacing 230V controls board and analogue programmer.
Steps for replacing the central heating pump head.
Procedures for replacing filling tap and RPZ valve.
Procedures for replacing drain point and water flow sensor.
Procedures for replacing water pressure sensor and bypass valve.
Procedures for replacing air vent and gas control valve.
Procedure for replacing the stepper motor on the gas control valve.
Steps for removing and replacing the discharge safety valve.
Procedure for replacing the three-way valve head.
Steps for replacing the three-way valve actuator.
Procedure for removing and replacing the ignition unit.
Steps for replacing the DHW plate heat exchanger.
Procedure for replacing the expansion vessel, noting boiler removal.
Steps for replacing the seal on the sealed chamber cover.
General| Mounting | Wall-mounted |
|---|---|
| Central Heating Output (kW) | 18 |
| Efficiency Class Heating | A |
| Efficiency Class Water Heating | A |
| Water Pressure | 1-3 bar |
| Ignition | Electronic |
| Heat Exchanger Material | Copper |
| Fuel Type | Gas |
