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General| Model | 912SC |
|---|---|
| Type | Gas Furnace |
| Efficiency Rating | 92.1% AFUE |
| Heating Capacity | 40, 000-120, 000 BTU/h |
| Blower Type | Variable Speed |
| Stages | Single-stage |
| Blower Motor Type | ECM |
| Ignition Type | Hot Surface Ignition |
| Fuel Type | Natural Gas |
| Warranty | 10-year limited warranty |
| Warranty on Heat Exchanger | 20 Years Limited |
| Warranty on Parts | 10-year limited warranty |
Critical hazards related to fire, explosion, electrical shock, and CO poisoning.
Warnings regarding combustible materials and ignition sources.
Cautions about potential damage to unit components due to improper use.
Safety advice for handling sheet metal parts with sharp edges.
Hazards associated with improper furnace use or installation.
Risks of CO poisoning and component damage from contaminated air.
Safety warnings for installing the furnace in a garage or hazardous atmosphere.
Warning about potential fire hazards related to improper venting.
Hazards of air contaminants corroding furnace components.
Risks from negative pressure conditions affecting furnace operation.
Notes for upflow installation where trap relocation is not needed.
Procedure for relocating the condensate trap for downflow installations.
Steps for repositioning the condensate trap in horizontal orientations.
Precautions against freezing that could cause property damage.
Warnings about potential damage from plugged drains or failed pumps.
Routing condensate drain for upflow/downflow installations.
Detailed steps for making the right-side condensate drain connection.
Detailed steps for making the left-side condensate drain connection.
Specific requirements for installing the furnace in an upflow configuration.
Instructions for connecting the supply-air ductwork to the furnace.
Instructions for using the bottom opening for return air.
Instructions for using side openings for return air, with configuration notes.
General guidelines for duct system design, sizing, and sealing.
Guidance on properly sizing return ductwork and filtering systems.
Methods for treating ductwork to reduce noise and vibration.
Critical safety warnings regarding gas leaks and open flames.
Cautions to prevent damage to gas controls and burner alignment.
Specific requirement for sealing gas pipe entry in direct-vent applications.
Specific requirements for Canada, conforming to CSA B149 code.
Essential step to ensure proper drainage and prevent CO release.
Steps to safely purge gas lines and check for leaks.
Warning about improper regulator adjustment affecting safety.
Caution against incorrect orifice handling causing burner noise or flame issues.
Verifying inlet gas pressure is within the specified range for maximum heat.
Understanding furnace wiring and control connections.
Using the service label and troubleshooting guide to diagnose issues.
Procedure to test individual furnace components for proper function.
Warnings about storing flammable materials near the furnace.
Safety precautions for performing maintenance or service.
Warning about operating furnace without a filter or with access doors removed.
Detailed sequence of operations during the heating cycle.
Detailed sequence of operations during the cooling cycle.
Operation of the blower when only the fan is activated.
How the furnace operates in conjunction with a heat pump system.
Procedure to initiate the furnace's component self-test sequence.
Explanation of the furnace model number designation.
