Heat Controller GUH80A User Manual
Heat Controller GUH80A User Manual

Heat Controller GUH80A User Manual

Single stage & two-stage gas furnaces
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GAS FURNACES
USER'S MANUAL
NON-CONDENSING GAS FURNACES
80+ AFUE
GUH80A Upflow / Horizontal
Furnaces
GDD80A Downflow
Furnaces
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 qualified installer, service agency or the
gas supplier.
• Do not store or use gasoline or other
flammable vapors and liquids in the vicinity
of this or any other appliance.
DO NOT DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
Single Stage & Two-Stage Furnaces
CONDENSING GAS FURNACES
92.1% AFUE
GUH92A Upflow / Horizontal
Furnaces
GDD92A Downflow
Furnaces
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 fire department.
95%+ AFUE
GUH95A & GUH95T Upflow /
Horizontal Furnaces
GDD95A Downflow
Furnaces
WHAT TO DO IF YOU SMELL GAS

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Summary of Contents for Heat Controller GUH80A

  • Page 1 Single Stage & Two-Stage Furnaces USER’S MANUAL CONDENSING GAS FURNACES NON-CONDENSING GAS FURNACES 80+ AFUE 92.1% AFUE 95%+ AFUE GUH95A & GUH95T Upflow / GUH92A Upflow / Horizontal GUH80A Upflow / Horizontal Horizontal Furnaces Furnaces Furnaces GDD92A Downflow GDD80A Downflow GDD95A Downflow Furnaces Furnaces...
  • Page 3: Table Of Contents

    TABLE OF CONTENTS IMPORTANT SAFETY INFORMATION..4 Gas Supply & Piping ........4 Venting System .........4 Clearances to Combustibles ......5 Sources of Corrosion .........5 Filter ............5 Flood Damage ...........5 ABOUT THE FURNACE .......6 Introduction ..........6 Category I Furnaces .........6 Category IV Furnaces ......6 Filter ............6 Thermostat ..........6 Furnace Location ........6...
  • Page 4: Important Safety Information

    IMPORTANT SAFETY INFORMATION IMPORTANT NOTE: If the gas supply fails to shut off Safety markings are used frequently throughout this or if overheating occurs, shut off the gas valve to manual to designate a degree or level of seriousness and should not be ignored.
  • Page 5: Clearances To Combustibles

    IMPORTANT SAFETY INFORMATION detector in hallways near the bedrooms in each sleeping The furnace is designed to have certain clearances to area. CO detectors should be certified to the most combustible items such as wood, paper, etc. Some types recent requirements of the UL, IAS OR CSA Standard of insulation are combustible.
  • Page 6: About The Furnace

    Category IV (Condensing) Furnaces • Single stage furnaces (GUH80A, GDD80A, GUH92A, Category IV furnaces typically have an AFUE rating over GDD92A, GUH95A, & GDD95A models) should be 90% and are mainly vented through plastic PVC pipe.
  • Page 7: Component Locations For Non-Condensing Type Furnaces

    Limit Switch Manifold Igniter Blower Burner Roll-Out Flame Assembly Switch Sensor Assembly GDD80A Downflow Gas Furnace GUH80A Upflow / Horizontal Gas Furnace COMPONENT LOCATIONS FOR CONDENSING TYPE FURNACES Single Stage Models Finish Finish Burner Flange Flange Igniter Assembly Roll-Out Blower Assembly...
  • Page 8: Single Stage Models

    Finish Finish Manifold Flange Flange Burner Blower Assembly Roll-Out Flame Assembly Switch (behind blower panel) Sensor Furnace Main Air Igniter Control Limit Switch Board Gas Valve Inducer Blower Door Switch Limit Switch Furnace (behind blower panel) Control Board Transformer Inducer Pressure Switch Condensate Inducer...
  • Page 9: Startup & Shutdown

    STARTUP & SHUTDOWN STARTING THE FURNACE 1. Make sure the filter is clean and in place. 2. Make sure the vent system is properly installed. 3. Set the thermostat to the lowest setting. 4. Close the manual gas valve outside the furnace. 5.
  • Page 10: Maintenance & Inspection

    MAINTENANCE & INSPECTION FURNACE & AIR DUCTS BLOWER & FILTER • The furnace should be inspected annually by a licensed • It is recommended that the blower compartment be HVAC technician. Table 1 below contains suggested cleaned of dirt or lint that may have accumulated in the inspections and frequency of maintenance.
  • Page 12 ¶ ¶ GUH95T Models Only Specifications & illustrations subject to change 709506A (Replaces 7095060) without notice or incurring obligations (01/14).

This manual is also suitable for:

Guh92aGuh95aGuh95tGdd80aGdd92aGdd95a

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