Table of Contents
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GAS FURNACES
USER MANUAL
80+ AFUE High Effi ciency Furnaces
*SA/*TA Upfl ow/Horizontal
*SK/*TK Downfl ow
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly
could result in serious injury or property
damage.
• Installation and service must be performed
by a qualifi ed installer, service agency or
the gas supplier.
• Do not store or use gasoline or other
fl ammable vapors and liquids in the
vicinity of this or any other appliance.
READ ALL INSTRUCTIONS THOROUGHLY. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
92.1%, 95.1% and 97%+ AFUE Models Only
Single Stage, Two-Stage, and Modulating Furnaces
95.1% AFUE Condensing Furnaces
*TC Upfl ow/Horizontal
*TL Downfl ow
97%+ AFUE Modulating Furnaces
*MQ Upfl ow/Horizontal
WARNING:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a
neighbors phone. Follow the gas suppliers
instructions.
• If you cannot reach your gas supplier, call
the fi re department.
92.1% AFUE Condensing Furnaces
*SC Upfl ow/Horizontal
*SL Downfl ow
WHAT TO DO IF YOU SMELL GAS
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Related Manuals for Nordyne *MQ 97%+ Upfl ow/Horizontal
Summary of Contents for Nordyne *MQ 97%+ Upfl ow/Horizontal
- Page 1 GAS FURNACES Single Stage, Two-Stage, and Modulating Furnaces USER MANUAL 80+ AFUE High Effi ciency Furnaces 92.1% AFUE Condensing Furnaces *SA/*TA Upfl ow/Horizontal *SC Upfl ow/Horizontal *SK/*TK Downfl ow *SL Downfl ow 95.1% AFUE Condensing Furnaces *TC Upfl ow/Horizontal *TL Downfl ow 97%+ AFUE Modulating Furnaces *MQ Upfl...
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Page 3: Table Of Contents
atulations on the purchase on your new furnace! With our dedication to quality, superior reliability, Congr and outstanding warranty, we know you will be pleased with this new appliance. This furnace has been designed and built to provide many years of safe and dependable home comfort, providing it is properly installed and regular maintenance has been performed. -
Page 4: Safety Information
SAFETY INFORMATION Safety markings are used frequently throughout this CLEARANCES TO COMBUSTIBLES manual to designate a degree or level of seriousness and The furnace is designed to have certain clearances to should not be ignored. WARNING indicates a potentially combustible items such as wood, paper, etc. Some types hazardous situation that if not avoided, could result in of insulation are combustible. -
Page 5: Gas Supply And Piping
SAFETY INFORMATION • New or newly renovated homes may require more WARNING: frequent changing until the construction dust has minimized. Filters designed to remove smaller particles The furnace was shipped from the factory such as pollen, may require additional maintenance. equipped to operate on natural gas. -
Page 6: Component Information
COMPONENT INFORMATION The furnace components shown on pages 9 - 11 will help Category IV Furnaces to identify and locate various parts of the furnace. The Category IV furnaces typically have an AFUE rating over component you need to familiarize yourself with is the 90% and are mainly vented through plastic PVC pipe. -
Page 7: Startup And Shutdown
STARTUP AND SHUTDOWN STARTING THE FURNACE: 12. Turn the thermostat back up to force ignition. 1. Make sure the fi lter is clean and in place. 13. Observe operation, including burners. If burners fail 2. Make sure the vent system is properly installed. to ignite, call a licensed HVAC technician. -
Page 8: Maintenance Table
FREQUENCY OF MAINTENANCE MAINTENANCE ITEM BEGINNING OF EACH END OF EACH MONTHLY HEATING SEASON HEATING SEASON Verify furnace area is free of combustible materials. Verify combustion and ventilation air is not restricted. Verify no signs of physical deterioration of the furnace. Verify no obstructions or restrictions in vent or chimney. -
Page 9: Location Of Single-Stage Furnace Components
LOCATION OF SINGLE-STAGE FURNACE COMPONENTS STATUS FLAME STATUS BLOWER DELAY FLAME BLOWER DELAY *SA 80+ Upfl ow/Horizontal Gas Furnace *SK 80+ Downfl ow Gas Furnace ITEM COMPONENT ITEM COMPONENT ITEM COMPONENT ITEM COMPONENT Blower Assembly Flame Rollout Switch Gas Valve Pressure Switch Blower Door Switch Flame Sensor... -
Page 10: Location Of Two-Stage Furnace Components
LOCATION OF TWO-STAGE FURNACE COMPONENTS *TA 80+ Upfl ow/Horizontal Gas Furnace *TK 80+ Downfl ow Gas Furnace ITEM COMPONENT ITEM COMPONENT ITEM COMPONENT ITEM COMPONENT Blower Assembly Flame Rollout Switch Gas Valve Motor Choke Blower Door Switch Flame Sensor Igniter Motor Control Board Burner Assembly Furnace Control Board... -
Page 11: Location Of Modulating Furnace Components
LOCATION OF MODULATING FURNACE COMPONENTS ITEM COMPONENT NAME Blower Assembly Blower Door Switch Burner Assembly Finish Flange Flame Roll-Out Switch Flame Sensor Furnace Control Board Gas Manifold Gas Valve Igniter Inducer Assembly Inducer Limit Switch Motor Choke (C and D cabinets only) Motor Control Board Motor Control Box Pressure Switches... - Page 12 ¢708967`¤ 7089670 Specifi cations and illustrations subject to change without notice or incurring obligations. O’Fallon, MO 708967 Printed in U.S.A. (10/08)