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Essential notices for users and service personnel regarding safe operation and maintenance.
Explains the meaning and use of safety symbols and labels in the manual for hazard identification.
Critical warning about the dangers of high voltage and necessary precautions before servicing.
Details the meaning of each digit in the model number for product identification and features.
Details crucial safety warnings and procedures for handling and operating the furnace.
Details methods for calculating and providing indoor combustion air based on building codes.
Procedures for providing combustion air directly from the outdoors via openings or ducts.
Specific requirements for converting to propane or installing at high altitudes.
Instructions and restrictions for the installation of vent, flue, and combustion air piping systems.
Guidelines for gas supply connections, sizing, and pressure requirements.
Procedures for adjusting furnace operation for high altitude installations.
Instructions and warnings for converting the furnace to operate on propane gas.
Details the purpose and settings for DIP switches on the PCBBF137 control board.
Explains the function and configuration of DIP switches on the PCBBF139 control board.
Tables correlating DIP switch settings with CFM values for cooling and continuous fan modes.
Tables showing CFM Rise values based on DIP switch settings for heating modes.
Steps for verifying furnace heating output and performance against specifications.
Detailed steps for accurately measuring the furnace's gas input using the gas meter.
How to verify transformer phasing and polarization for correct electrical operation.
Procedures for verifying voltage levels and power supply to furnace components.
How to measure and verify the incoming gas supply pressure.
Steps to measure and adjust manifold gas pressure for optimal burner operation.
A detailed chart linking operational symptoms and LED codes to potential faults and solutions.
How to interpret diagnostic LED codes and retrieve fault history.
Electrical schematic for the MEC96 Rev AA furnace model.
General