Modulens AGC 25 Installation And Service Manual

Gas fired floor-standing condensing boiler
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Modulens
Gas fired floor-standing condensing boiler
AGC 10/15
AGC 15
AGC 25
AGC 35
300026081-001-08
Installation and
Service Manual
EN

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Table of Contents
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Summarization of Contents

Safety Instructions and Recommendations
General Safety Instructions
Provides essential safety guidelines for using the boiler, including precautions for gas and flue gas leaks.
Recommendations
Details important recommendations for installation, maintenance, and modifications to the boiler.
About This Manual
Symbols Used
Explains the meaning of danger, warning, caution, and information symbols used in the manual.
Abbreviations
Lists and defines common abbreviations used throughout the installation and service manual.
After Sales Service Internet Site
Provides information on accessing the manufacturer's website for documentation and technical support.
Technical Specifications
Homologations
Details CE identification, NOx classification, connection types, gas categories, and factory test procedures.
Technical Specifications
Provides detailed technical data including outputs, efficiencies, gas consumption, temperatures, and sensor characteristics.
Technical Description
General Description
Describes the boiler's features, efficiency, emissions, control panel, and hot water production capabilities.
Main Parts
Identifies and lists the key components of the boiler, with a diagram for reference.
Operating Principle
Explains the boiler's operating principles with skeleton diagrams, circulation pump details, and water flow rate.
Installation
Regulations Governing Installation
Emphasizes that installation must be performed by a qualified engineer according to local regulations.
Package List
Details the standard delivery contents and lists available accessories for the boiler installation.
Choice of the Location
Provides guidance on selecting an appropriate location for the boiler, including checking the type plate.
Positioning the Appliance
Details minimum recommended distances and warnings for positioning the boiler and DHW calorifier.
Ventilation
Explains ventilation requirements, connection to chimneys, and cautions regarding combustion air contamination.
Main Dimensions
Provides key dimensions for the boiler, including overall size and specific measurement points.
Positioning the Boiler on its Own
Details steps for removing packaging, opening panels, and safely handling the boiler during installation.
Fitting the Boiler to a DHW Tank
Explains how to position the DHW tank and then fit the boiler to it, referencing previous steps.
Positioning the Boiler to the Left or Right of a DHW Tank
Provides instructions for positioning the boiler relative to a DHW tank, referencing previous steps.
Reversing the Opening Direction of the Control Panel Door
Details the procedure for changing the opening direction of the control panel access door.
Hydraulic Connections
Covers essential hydraulic connections, including flushing the system for new and existing installations.
Hydraulic Connection of the Heating Circuit
Explains how to connect the heating water outlet and return pipes and install filling/drainage valves.
Connection of the Water Circuit for Domestic Use
Briefly mentions referring to the DHW tank manual for domestic water circuit connections.
Connecting the Expansion Vessel
Details the standard fitting of expansion vessels for different boiler models and system volumes.
Connecting the Condensate Discharge Pipe
Provides instructions and cautions for connecting the condensate discharge pipe, including gradient and material considerations.
Filling the Condensate Trap
Explains the procedure for filling the condensate trap with water before boiler startup.
Gas Connection
Provides safety warnings and steps for connecting the gas inlet pipe and shut-off valve.
Flue Gas System Connections
Details various flue gas connection classifications (B33, C13, C33, etc.) with diagrams and explanations.
Lengths of the Air/Flue Gas Pipes
Provides tables showing maximum lengths for air/flue gas pipes based on connection type and boiler model.
Installing the Outside Sensor
Offers advice on choosing the best location for the outside sensor and how to connect it.
Electrical Connections
Covers electrical connections, including the control unit, general recommendations, and access to terminals.
Recommendations
Provides critical warnings and recommendations for carrying out electrical connections safely and correctly.
Access to the Connection Terminal
Details the steps for opening the control panel door and removing the front panel to access connection terminals.
Position of the PCBs
Illustrates the location of the Printed Circuit Boards (PCBs) within the boiler's control system.
Connecting a Direct Heating Circuit
Explains how to connect a direct heating circuit, including safety thermostat and sensor connections.
Connecting a Heating Circuit and a Domestic Hot Water Tank
Details the electrical connections for a heating circuit combined with a domestic hot water tank (HL/SHL type).
Connecting Two Circuits and a Domestic Hot Water Tank
Explains electrical connections for two circuits and a domestic hot water tank, including pump, sensor, and valve connections.
Hot Water Storage Tank Connection
Details connections for hot water storage tanks, including the QUADRO DU 750 and independent tanks.
Pool Connection
Explains how to connect a swimming pool circuit, including pumps, sensors, and heat exchangers.
Connecting a Mixed Tank
Briefly describes heating the DHW tank in winter mode and using an electrical resistor in summer mode.
Connecting the Options
Explains how to connect various options like remote controls, monitoring modules, and second DHW tanks.
Connection in Cascade
Details cascade connections for DHW tanks after mixing tanks, including master and secondary boiler configurations.
Electrical Diagram
Presents the principle diagram and wiring scheme for the boiler's electrical connections.
Filling the System
Covers filling the system, including water treatment recommendations and cautions regarding chemical additives.
Filling the System
Details the procedure for filling the heating system, including opening valves, checking pressure, and verifying connections.
Commissioning
Control Panel
Explains the functions of the control panel keys, including setting, mode selection, and installer access.
Description of the Display
Details key functions, flame output levels, and solar status indicators displayed on the control panel.
Access to the Various Browsing Levels
Describes how to access User, Installer, and After Sales levels via specific key presses on the control panel.
Browsing in the Menus
Explains how to navigate menus, select parameters, modify values, and confirm changes using the rotary button.
Check Points Before Commissioning
Outlines preparatory steps before commissioning, including gas type, circuits, pressure, and electrical connections.
Putting the Appliance into Operation
Details steps for putting the boiler into operation, including opening the gas supply and turning on the switch.
Gas Settings
Explains how to adapt the boiler for different gas types, including setting fan speed and air/gas ratio.
Checking and Setting Combustion
Details the procedure for checking and setting combustion O2 levels at full load using a flue gas analyzer.
Basic Setting for the Gas/Air Ratio
Details steps for basic gas/air ratio adjustment, including fan/mixing elbow unit removal.
Checks and Adjustments After Commissioning
Covers post-commissioning checks, parameter display modes, and specific installation parameter settings.
Setting the Parameters Specific to the Installation
Guides on setting specific installation parameters for different circuits (A, B, C) and functions like DHW and pool management.
Naming the Circuits and Generators
Explains how to rename circuits (A, B, C, DHW) and generators for better identification in the system.
Setting the Heating Curve
Illustrates setting heating curves without BCT and with BCT, defining parameters like maximum temperature and day set point.
Finalizing Work
Outlines the final steps for commissioning, including removing equipment, refitting panels, and user explanation.
Reading Out Measured Values
Explains how to access and read various measured values displayed in the #MEASURES menu.
Changing the Settings
Covers changing settings like language, calibrating sensors, and accessing professional settings.
Calibrating the Sensors
Guides on calibrating room sensors for circuits A, B, and C, and setting room offsets and antifreeze activation.
Professional Settings
Details professional settings for boiler parameters like maximum temperature, fan speed, and pump speed.
Configuring the Network
Guides on configuring the network for cascade systems, including setting master/slave roles and communication parameters.
Return to the Factory Settings
Provides instructions on how to reset the appliance to factory default settings, including parameter resets.
Switching Off the Appliance
Installation Shutdown
Offers a caution against switching off the mains supply and recommends activating HOLIDAYS mode for long periods.
Antifreeze Protection
Explains the boiler's antifreeze protection functions and the HOLIDAYS mode for installation protection.
Checking and Maintenance
General Instructions
Emphasizes that maintenance must be done by qualified personnel, with annual inspections and use of original parts.
Chimney Sweep Instructions
Provides a caution that flue sweeping must be done by a qualified engineer and recommends checking combustion.
Standard Inspection and Maintenance Operations
Details standard maintenance operations, including checking hydraulic pressure, expansion vessel, and ionization current.
Checking the Hydraulic Pressure
Explains how to check hydraulic pressure, top up water levels, and interpret pressure gauge symbols.
Checking the Expansion Vessel
Details how to remove the cover and check the expansion vessel for proper function or replacement.
Checking the Ionization Current
Instructs to read the ionization current from the #MEASURES menu for diagnostic purposes.
Checking the Tightness of the Flue Gas Evacuation and Air Inlet Connections
Requires checking the tightness of flue gas evacuation and air inlet connections for safety and performance.
Checking Combustion
Explains how to measure O2 in flue gases at full load using an analyser and compare with specified values.
Checking and Closing the Automatic Air Vent
Details steps for checking and closing the automatic air vent, including panel removal and leak checks.
Checking the Safety Valve
Instructs to check the safety valve for water presence and leaks, replacing it if necessary.
Checking the Condensate Trap
Covers checking, cleaning, filling the siphon, and repositioning the condensate trap.
Checking the Burner and Cleaning the Heat Exchanger
Provides detailed steps for checking the burner, cleaning the heat exchanger, and checking electrodes.
Troubleshooting
Anti-hunting
Explains the 'Anti-short-cycle' operating mode and the 'Operation assured' message, not an error.
Messages (Code type Bxx or Mxx)
Lists error codes (Bxx/Mxx) displayed on the control panel and provides checking/solution steps for each.
Faults (Code type Lxx or Dxx)
Explains how to note error codes (Lxx/Dxx), switch off/on the boiler, and consult the fault table.
Parameter and Input/Output Check (Mode Tests)
Explains how to use menus to target malfunction causes by checking parameters and input/output signals.
Spare Parts
General
Advises using only original or recommended spare parts for replacements and providing reference numbers when ordering.
Spare Parts
Provides exploded views and lists of spare parts for the boiler, categorized into Casing, Water unit, and Control panel.
Casing
Illustrates spare parts for the boiler casing, such as front panels, side panels, and control panel doors.
Spare Parts List
Provides a comprehensive list of spare parts with markers, code numbers, and descriptions for Exchanger-Casing and Water unit.
Appendix
Information on the Ecodesign and Energy Labelling Directives
Contains information regarding the ecodesign and energy labelling directives applicable to the product.
Specific Information
Recommendations
States that only qualified persons are authorized for assembly, installation, and maintenance.
Ecodesign Directive
Confirms product conformance with European Directive 2009/125/EC on ecodesign of energy-related products.
Technical Data
Presents technical parameters for boiler space heaters, including heat output, efficiency, and auxiliary consumption.
Circulation Pump
Notes that the benchmark for efficient circulators is EEI ≤ 0.20.
Disposal and Recycling
Warns that boiler removal and disposal must be done by a qualified installer according to regulations.

Table of Contents