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I n s t a l l a t i o n & S e r v i c i n g
Instructions
XL70
XL110
XL140
These instructions are to be retained by the user.

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Summarization of Contents

Installation and mounting
Wall-mounted in line
Describes the wall-mounted installation method for boilers.
Free-standing in line
Details the free-standing in-line installation method for boilers.
Free-standing back-to-back
Explains the free-standing back-to-back installation method for boilers.
Connecting the boiler
Provides instructions for connecting the boiler to the system.
Hydraulic and gas line system
Heating system
Details the installation of the central heating system.
Expansion vessel
Explains the requirement and installation of an expansion vessel.
Water quality
Specifies requirements for filling water quality in the heating system.
Gas line
Covers the installation and requirements for the gas line.
Condensate drain
Details the installation and routing of the condensate drain pipe.
Hot water supply
Discusses the connection and control of the hot water supply.
Flue gas system
Parallel boiler connection
Describes the standard parallel connection for flue gas outlet and air supply.
Concentric boiler connection
Explains how to convert the boiler to a concentric flue connection.
Connecting the flue gas outlet-/air supply system
Details connecting the flue gas outlet and air supply systems.
Individual flue gas outlet
Outlines considerations for an individual flue gas outlet system.
Collective flue gas outlet
Discusses options for collective flue gas outlet systems.
Collective flue gas outlet under-pressure
Details venting lengths for under-pressure collective flue gas systems.
Collective flue gas outlet over-pressure
Details venting lengths for over-pressure collective flue gas systems.
Condensate vent collective flue gas outlet system
Explains condensate drainage for collective flue gas systems.
Electrical connections
External controls
Describes connecting and using external boiler controls.
Wiring diagram
Provides a detailed wiring diagram for boiler connections.
Boiler control
Operational status
Explains the different operational statuses displayed by the boiler.
Operation
Details the boiler's keyboard operation and control functions.
Commissioning
Guides the user through the boiler commissioning process.
Setting the maximum flow water temperature with On/Off-control
Details setting the max flow temperature for On/Off control.
Filling the heating system
Describes the heating system filling procedure.
Basic settings
Menu structure at Basic level
Outlines the menu navigation for basic settings.
Clock program
Details the clock program settings for heating and hot water.
Parameters
Basic settings
Provides an overview of essential boiler configuration parameters.
Timeprog options
Explains options for setting time programs.
Inspection and maintenance
Maintenance intervals
Specifies the recommended intervals for boiler maintenance.
Checks prior to commissioning
Lists essential checks before boiler commissioning.
Emission check
Details the procedure for checking boiler emissions.
Check O₂
Explains how to check and set the oxygen percentage.
Maintenance activities
Describes various maintenance tasks for boiler components.
Counter running hours
Explains how to reset the service counter.
Warranty
Refers to warranty terms and conditions.

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