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General| Model | G23(X) |
|---|---|
| Blower Type | Multi-Speed |
| Warranty | Limited Lifetime Heat Exchanger warranty, 5-Year Limited Parts Warranty |
| AFUE | 80% |
| Ignition System | Hot Surface Ignition |
| Vent Type | Natural Draft |
| Efficiency Rating | Up to 80% |
| Fuel Type | Natural Gas/Propane |
| Stages | Single-stage |
| Blower Motor Type | PSC |
| Ignition Type | Hot Surface |
Detailed technical specifications for G23(X) series furnaces, including input/output, efficiency, and dimensions.
Lists optional accessories for G23(X) furnaces, such as filter kits and venting options.
Provides guidance on pressure regulator adjustments for high altitude installations of G23(X) furnaces.
Illustrates the overall orientation of the G23(X) furnace and its main compartments.
Details the location and identification of major internal components within the G23(X) furnace.
Exploded view and identification of parts for the G23(X) heat exchanger assembly.
Illustrates the control boxes for different G23(X) models, showing internal components.
Describes the main unit components and how to access them for service or maintenance.
Explains the function and purpose of components within the furnace control box.
Provides instructions and illustrations for installing the make-up box for the G23(X) furnace.
Explains the BCC blower control, its settings, and fan timing adjustments.
Outlines essential precautions for handling electronic components to prevent ESD damage.
Details the operational sequence of the furnace during a heating call, from ignition to blower activation.
Describes the intermittent pilot ignition control used in G23(X)-1 to -4 models.
Explains the sequence of operations for the G776 ignition control, including LED diagnostics.
Describes the role and operation of the combustion air blower in the G23(X) furnace.
Lists the horsepower and capacitance ratings for G23(X) series blower motors.
Explains the function and reset procedure for the flame rollout safety switch.
Describes the primary limit control and its role in preventing furnace overheating.
Explains the arrangement and function of pilot, spark electrode, flame sensor, and burners.
Details the SureLight ignition system, its control board, and ignitor for specific models.
Explains the location, function, and mounting of the flame sensor.
Lists and describes the function of each terminal on the SureLight control board.
Provides a guide to interpreting diagnostic codes indicated by the LED lights on the control board.
Describes the electronic ignition sequence, including pre-purge and flame sensing.
Explains how to adjust the fan-off time delay on the SureLight control for comfort.
Describes the gas valve, its safety features, and replacement considerations.
Explains the role of the pressure switch in ensuring combustion air blower operation.
Emphasizes the necessity of sufficient fresh air for proper and safe furnace operation.
Outlines requirements for combustion air, including avoiding contaminants and space definitions.
Explains the criteria for an unconfined space and its air supply requirements.
Defines a confined space and details the air supply and ventilation requirements for it.
Covers compliance with codes, furnace classification, and vent sizing information.
Details requirements for venting G23(X) furnaces into masonry chimneys, including lining and common venting.
Outlines requirements for vent diameter, runs, elbows, and connector types for G23(X) furnaces.
Provides capacity ratings for Type B double-wall vents serving a single appliance.
Lists capacity ratings for Type B double-wall vents with Type B connectors serving single appliances.
Provides capacity ratings for Type B double-wall vents with single-wall connectors serving single appliances.
Shows vent connector capacity ratings for Type B double-wall vents serving multiple appliances.
Lists common vent capacity ratings for Type B double-wall vents serving multiple appliances.
Lists vent connector capacity ratings for Type B double-wall vents with single-wall connectors.
Provides common vent capacity ratings for Type B double-wall vents with single-wall connectors.
Details the procedures for testing and removing a unit from a common venting system.
Covers the requirements and wiring for horizontal side wall venting kits.
Outlines the critical checks and procedures before and during the initial heating start-up.
Describes procedures for safe and emergency shutdown of the furnace.
Provides instructions for safely shutting down the unit for extended periods.
Lists essential checks for the heating system, including AGA certification and gas piping.
Details how to check and verify manifold pressure for correct unit operation.
Explains how to test the gas supply pressure to ensure it's within operational limits.
Describes how to measure gas flow using the meter clocking method.
Provides guidance on adjusting the pressure regulator based on installation altitude.
Explains how to check the flame signal using a DC microammeter for ignition troubleshooting.
Provides a step-by-step guide for measuring the flame signal with a transducer.
Outlines typical operating characteristics and adjustment procedures for the furnace.
Explains how blower operation is controlled by the thermostat and how to adjust fan speeds.
Details the procedure for measuring temperature rise and adjusting blower speed accordingly.
Describes how to measure external static pressure in the furnace's air system.
Provides step-by-step instructions for safely removing the blower motor from the furnace.
Explains how to change blower speed settings for leadless motor configurations.
Details how to adjust blower speed taps for leaded motor configurations using the SureLight control.
Outlines the recommended maintenance schedule and procedures for the G23(X) furnace.
Provides guidance on inspecting, cleaning, or replacing the return air filters.
Details the process for cleaning the heat exchanger and burners for optimal performance.
Instructs on cleaning the supply air blower wheel and mentions motor lubrication.
Describes checks for flue pipe, chimney, and connections to ensure safety and proper function.
Outlines checks for wiring connections, voltage, and blower motor amp-draw.
Illustrates the field wiring connections for the G23(X) furnace, including thermostat and accessories.
Shows the wiring designations for G23(X) furnaces and their corresponding condensing units.
Explains the operational sequence for G23(X) models -1 through -4 during heating.
Provides a flowchart for diagnosing and resolving issues related to the BCC blower control.
Offers a troubleshooting flowchart for situations where the pilot fails to light despite spark.
Provides a troubleshooting flowchart for issues where no spark is produced or the system won't operate.
Offers a flowchart for troubleshooting when the pilot lights but the main valve does not open.
Details the heating sequence of operation for G23(X) models equipped with the SureLight control.
Illustrates the heating sequence of operation for the SureLight control, including normal and abnormal modes.
Continues the heating sequence flowchart, detailing ignition trials and limit checks.
Illustrates the cooling sequence of operation for the SureLight control, including normal and abnormal modes.
Details the sequence of operation for the continuous low speed fan mode.
Provides a troubleshooting guide for common initial power-up issues with the SureLight control.
Addresses issues where the unit fails to operate in cooling, heating, or fan modes.
Covers failures related to combustion air blower operation in cooling/heating modes.
Diagnoses issues where the combustion air blower does not energize during heating.
Addresses combustion air blower issues, specifically pressure switch failures.
Diagnoses issues where the unit fails to fire, but the combustion air blower energizes.
Covers scenarios where the ignitor energizes, but the unit fails to light.
Addresses problems where burners light but the unit shuts down prematurely.
Details issues related to roll-out switch trips, gas leaks, and air leakage.
Addresses issues where the control board signals a low flame sense during heating.
Covers failures related to the indoor blower not operating in various modes.
Addresses potential RF static interference during the ignition sequence.
