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General safety warnings, symbols, and essential precautions for appliance handling and operation.
Critical warning about carbon monoxide poisoning risks and necessary ventilation.
Essential safety guidelines and step-by-step instructions for starting the furnace.
Procedure for safely shutting off the gas supply to the appliance.
Steps to protect electronic components from static electricity during service.
Requirements for propane conversion and high altitude operation adjustments.
Instructions for wiring thermostats and connecting optional accessories.
Detailed steps for the furnace's heating cycle, including speed selection.
Steps involved in the furnace's cooling mode operation and speed selection.
Information on required filter sizes and installation for DM80SN and DC80SN models.
Procedure to verify phase alignment between transformer primary and secondary sides.
Annual inspection points for flue, burners, sensors, and blowers.
Guidance on cleaning or replacing air filters for optimal furnace performance.
List of necessary tools for performing furnace diagnostics and maintenance.
Troubleshooting electrical voltage, wiring continuity, and thermostat functionality.
Procedures for checking blower motors and gas valve operation and pressure.
Testing ignitors, flashback, pressure switches, and limit controls.
Tables showing CFM for cooling at various static pressures and tap settings.
Tables showing CFM and temperature rise for heating at different static pressures.
Explanation of system modes, menu options, and LED status indicators.
Chart detailing symptoms, fault descriptions, LED status, and corrective actions.
General
