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Overview of the high-efficiency condensing gas furnace models covered.
Critical warnings about installation, adjustment, alteration, service, or maintenance.
Essential safety rules and precautions to follow during furnace installation.
Special installation requirements for furnaces in the State of Massachusetts.
Guidance on selecting an appropriate and safe location for furnace installation.
Precautions regarding installation in buildings under construction and combustible materials.
Specifies required clearances around the furnace for safe operation and servicing.
Guidelines for supplying combustion and ventilation air in unconfined spaces.
Guidelines for supplying combustion and ventilation air in confined spaces.
Discusses risks and recommendations for combustion air quality.
Explains high-efficiency venting and requirements for direct/non-direct vent.
Details the installation of inlet air restrictor plates and flue pipe screens.
Lists approved materials for vent and air intake piping systems.
Specifies limitations for connecting Category IV furnaces to venting systems.
Provides guidance on selecting appropriate vent pipe size based on length and elbows.
Tables detailing minimum vent pipe diameter requirements for different BTU/HR models and elbows.
Notes on vent termination locations and potential hazards in horizontal venting.
Specifies minimum clearances for direct vent terminals in Canadian and US installations.
Specifies minimum clearances for non-direct vent terminals in Canadian and US installations.
Installation details for horizontal direct venting of upflow models.
Installation details for vertical direct venting of upflow models.
Installation details for horizontal non-direct venting of upflow models.
Installation details for vertical non-direct venting of upflow models.
Installation details for horizontal direct venting of counterflow models.
Installation details for vertical direct venting of counterflow models.
Installation details for horizontal non-direct venting of counterflow models.
Installation details for vertical non-direct venting of counterflow models.
Advice on replacing existing venting systems with new furnaces.
Instructions for installing the condensate drain line and disposal system.
Critical safety warning regarding improper venting and carbon monoxide.
Guidelines for return air ducting when the furnace supplies air to remote areas.
Instructions for connecting ducts for counterflow models on combustible flooring.
General requirements for gas supply piping installation and conversion.
Details on gas piping installation in accordance with local codes and utility regulations.
Illustrates the gas piping connection points and components.
Critical safety warning regarding fire or explosion hazards during gas piping.
Safety precautions and wiring guidelines for electrical connections.
Instructions for installing the filter rack on upflow models.
Information on furnace filters and their installation for various models.
Specifies minimum filter sizes and quantities based on airflow.
Details connections for electronic air cleaners and humidifiers.
Information on twinning furnaces and thermostat installation.
Critical safety instructions for lighting and what to do if gas is detected.
Step-by-step procedure for starting the furnace operation.
Step-by-step procedure for safely shutting down the furnace.
Describes the furnace's operational sequence for heating, fan, and cooling modes.
Explains the function of key control components like pressure and limit switches.
Procedures for measuring and adjusting gas input to the furnace.
How to adjust blower speed to maintain the correct temperature rise.
Guidelines for operating the furnace at high altitudes.
Provides manifold pressure settings for natural gas and propane at various altitudes.
Essential safety precautions before performing any maintenance tasks.
Recommendations for checking and maintaining furnace air filters.
How to inspect main burner flames for proper operation and appearance.
Guidance on checking and maintaining the condensate drain system.
Lists available replacement parts categorized by functional groups.
Details available accessory kits for conversion, filters, and twinning.
Initial visual checks to perform before troubleshooting system issues.
Explains fault codes indicated by the control board's LED for diagnostics.
How to view and clear the stored fault code history on the control board.
Illustrates the electrical connection points and wiring for the furnace.
Provides a detailed schematic of the furnace's electrical system and components.
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