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Modification of this appliance can be extremely hazardous. Always consult manufacturer before making changes.
Alerts users to hazards, supervision, flammables, and provides steps for gas leaks.
Detailed steps for starting and operating the furnace, including safety checks and procedures.
Instructions for safely turning off the furnace and its components.
Explains the sequence of events during normal furnace heating cycles.
Describes the function of main components like the blower assembly and controls.
Explains the automatic solid state rectifier system for dual voltage models.
Diagnoses common reasons for the furnace not producing heat, including electrical and gas supply checks.
Explains the role of the fan switch in controlling blower operation sequence.
Describes the limit control's purpose to prevent overheating and its bypass caution.
Details the two purposes of the air switch: air prover and ignition timing.
Provides guidance on routine cleaning and maintenance for optimal performance.
Instructions for adjusting the thermostat heat anticipator for proper heating cycles.
Explains the need to derate gas input for altitudes above 4000 ft to prevent issues.
Explains how the thermostat triggers the ignitor for burner ignition and safety shutdown.
Details the components of the direct spark ignition system: control module, electrode, and wires.
States that the solid state control module is not field repairable and warns about applying power incorrectly.
Covers checks for input polarity, grounding, wiring, high voltage, and valve malfunctions.
Illustrates the direct spark ignition system wiring for 12 VDC models.
Provides a simplified schematic view of the wiring diagram.
Details the direct spark ignition wiring for 120 VAC/12 VDC models, including rectifier and transformer.
Presents a schematic of the dual voltage wiring diagram for clarity.
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General