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General| Fuel Type | Natural gas |
|---|---|
| Max. Heat Output | 24 kW |
| Efficiency | Up to 98% |
| Control System | Vitotronic |
| Water Pressure | Max. 3 bar |
| Type | Wall-mounted condensing boiler |
Provides critical steps to follow immediately if a gas leak is detected.
Outlines safety actions required upon smelling flue gas.
Outlines the necessary on-site preparation for gas, water, and electrical connections.
Details power supply cable requirements, fuse rating, and cable protrusion for connections.
Illustrates the steps for physically mounting the boiler and making basic connections.
Instructions for connecting parallel or coaxial flue gas systems and bends.
Procedure for installing the gas shut-off valve and performing a leak/soundness test.
Diagram showing electrical connections for accessories and primary power supply.
Details power supply requirements, safety warnings, and fuse rating for 230V connection.
Lists sequential steps for commissioning, inspection, and maintenance procedures.
Continues the detailed list of essential commissioning and inspection tasks.
Details the process for filling the heating system, including water quality requirements and steps.
Instructions for performing the heating system venting procedure.
Steps to verify the gas type and convert the burner if necessary.
Flowchart illustrating normal operation and potential faults within the system.
Procedure for measuring the static and supply pressure of the gas.
Steps for testing and adjusting nozzle pressure at upper and lower rated outputs.
Instructions on how to set and record the maximum output for heating operation.
Procedure to check flue system integrity using CO2/O2 concentration.
Step-by-step guide for safely disassembling, cleaning, and reassembling the burner.
Procedure for removing, cleaning, and reinstalling the flue gas heat exchanger.
Steps for checking electrode wear, contamination, and gap settings.
Procedure for checking, replacing, or reinstalling the flow limiter and flow switch.
Instructions for checking and recharging the diaphragm expansion vessel's inlet pressure.
Safety warning and procedure for checking the soundness of gas equipment under pressure.
Guide for conducting flue gas emissions tests using an analyser for different flue types.
Procedure for accessing and navigating the Code 1 settings menu.
Procedure for accessing and navigating the Code 2 settings menu.
Summary of service functions, key combinations, and corresponding page references.
Procedure for scanning boiler temperatures, coding card data, and system status.
Procedure for testing various relay outputs such as burner, valves, and pumps.
Steps to scan and view operating conditions and sensor data.
Diagrams and explanations of fault display elements: indicator, symbol, number, and code.
Procedure for identifying, acknowledging, and clearing system faults.
Procedure to access and scan the fault history log.
Table detailing fault codes, their causes, and recommended troubleshooting measures.
Continuation of the fault code table, listing causes and corresponding measures.
Table detailing fault codes related to programming unit and remote control communication.
Table listing fault codes related to pump speed and LON communication faults.
Table detailing fault codes for room temperature sensors and burner blockages.
Table listing fault codes related to temperature limiters and air pressure switches.
Table detailing fault codes for gas pressure switches and fan speed anomalies.
Table listing fault codes related to electromagnetic interference (EMC) and faulty PCBs.
Procedure for checking, servicing, and replacing the plate-type heat exchanger.
Procedure for testing the resistance of the outside temperature sensor and comparing with a curve.
Procedure for checking and replacing boiler water, comfort, and flow temperature sensors.
Details how the unit maintains set boiler water temperature in heating mode.
How the burner modulates to reach DHW outlet temperature.
How the control unit determines and regulates boiler water temperature based on external factors.
Details how the burner modulates to reach DHW outlet temperature.
Schematic diagram illustrating the internal electrical connections within the boiler unit.
Schematic diagram illustrating the external electrical connections to the boiler.
Instructions on how to correctly order spare parts using part and item numbers.
Template for recording static pressure, supply pressure, gas analysis, and ionisation current.
Details on voltage, frequency, protection class, temperature limits, and power consumption.
Table providing connection values for natural gas and LPG at maximum load.
Efficiency ratings, standby loss, and power consumption data for central heating.
Statement of product compliance with relevant standards and directives, including the Efficiency Directive.
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