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Essential safety precautions for appliance use and installation.
Steps to follow if a gas smell is detected.
Safe installation practices, environmental, and operational precautions.
Specific warnings on electrical shock, gas pressure, and water temperature.
Lists main features, components, and technical data.
Covers unpacking, contents, and how to open the unit.
Key rules for safe installation and operation.
Physical size and required spacing around the unit.
Lists compliant materials, configurations, and clearances.
Tables detailing maximum pipe lengths for different systems.
Guidelines for using elbows in vent pipes.
Specific clearance requirements for direct vent systems.
Specific clearance requirements for single pipe systems.
Illustrates approved vertical and horizontal venting installations.
Instructions for condensate drain connection and freeze prevention.
Steps and considerations for installing the backdraft reducer.
Method to calculate equivalent vent length for adjustments.
Tables for fan speed settings based on altitude and pipe size.
Step-by-step guides for adjusting fan speeds.
Specific regulations for CO detectors in MA.
Manufacturer requirements and signage.
Air requirements for twin pipe, concentric, and single pipe systems.
Guidelines for providing air in enclosed areas.
Guidelines for choosing the installation spot.
Instructions for attaching the unit to the wall.
Compliance, safety, and pipe connection details.
Tables for sizing natural and LP gas pipes.
How to connect water pipes to the unit.
Recommended water parameters and testing.
Instructions for installing the pressure relief valve.
Instructions for filling the trap before vent pipe installation.
Instructions for filling the trap after vent pipe installation.
Diagram and notes for recirculation systems.
Safety precautions and pump sizing for space heating.
Procedures for performing gas pressure tests.
Details on electrical power supply and grounding.
How to access and check fuses.
Explanation of the LCD display elements and indicators.
Crucial safety steps before powering on.
Basic operation controls.
How solar mode and remote control work.
General operation and error reset procedures.
Using the program button for temperature presets.
Explanation of the locked condition status.
Tasks to perform yearly for maintenance.
Steps for preparing for winter and removing mineral scale.
Servicing the condensing heat exchanger unit.
Conditions and steps for CO2 adjustment.
Table of programmable values and their settings.
Accessing diagnostic modes and checking operating hours.
General advice for troubleshooting the appliance.
Diagnosing issues with burner ignition and water flow.
Addressing low flow and fluctuating temperatures.
Diagnosing noise and water pressure problems.
Troubleshooting specific error codes.
Troubleshooting specific error codes.
Troubleshooting specific error codes.
Troubleshooting specific error codes.
Visual representation of electrical connections and components.
Resistance vs temperature chart for the outlet sensor.
Resistance vs temperature chart for the inlet sensor.
Resistance vs temperature chart for backflow/exhaust sensors.
Diagram showing the appliance's operational sequence.
Labeled diagram showing internal parts.
Parts list for the front cover and outer shell.
Parts list for heat exchanger and fans.
Parts list for the burner and air mixer.
Parts list for the gas valve.
Parts list for water connections.
Parts list for the control unit and electrical components.
Information on recycling packaging and saving water.
Details of warranty terms and what's not covered.
Legal disclaimers on warranties.
Steps for submitting a warranty claim.
Checklist for installers and info on obtaining parts.
General