Document Outline

• 90+ Single Stage
  • Safety Rules
    • Frozen Water Pipe Hazard
  • 2. Installation
    • Furnace Installation Considerations
    • Condensate Trap and Drain Lines
    • Horizontal Furnace Installation
    • Leveling
    • Vent and Combustion Air Connections
  • 3. Combustion & Ventilation Air
  • For Single Pipe Installation
    • CARBON MONOXIDE POISONING HAZARD
    • Failure to provide adequate combustion and ventilation air could result in death and/or personal injury.
    • Use methods described here to provide combustion and ventilation air.
    • Air Openings and Connecting Ducts
    • Confined Space Installation
    • Requirements
    • Unconfined Space Installation
      • CARBON MONOXIDE POISONING HAZARD
      • Failure to supply additional air by means of ventilation grilles or ducts could result in death and/or personal injury.
      • An unconfined space or homes with tight construction may not have adequate air infiltration for proper combustion and ventilation of flue gases.
      • Most homes will require additional air.
    • Venting and Combustion Air Check
      • Figure 6
      • Vent Check
  • For Two Pipe Installation
  • 4. Vent and Combustion Air Piping
    • Single Pipe (N9MP1 Models)
    • Direct Vent (N9MP2 Models)
    • Dual Certified f9MPD Models)
    • Contaminated Combustion Air
    • Vent and Combustion Air Piping Guidelines
    • Piping Insulation Guidelines
    • Sizing Combustion Air and Vent Pipe
    • Condensate Drain Trap Freeze Protection
      • Figuro 13
      • Downflow Right Side Vent and Trap
      • Figure 18
      • Connecting Tee Trap to Condensate Trap and Main Drain Line
      • CARBON MONOXIDE POISONING HAZARD
      • Failure to properly seal vent piping could result in death, personal injury and/or property damage.
      • Cement or mechanically seal all joints, fittings, etc. to prevent leakage of flue gases.
      • Combustion Air Pipe Connection (Dual Certified or Direct Vent)
    • Connecting Vent Pipes and Termination
    • Horizontal Termination
    • Using Exterior Risers
    • Vertical Termination
    • Vent Termination Shielding
  • 5. Gas Supply and Piping
    • Alternate BTUH Input Ratings (USA Only)
    • Supply Pressure
    • Gas Supply Pressure
    • Manifold Gas Pressure Adjustment
    • MANIFOLD PRESSURE AND ORIFICE SIZE FOR HIGH ALTITUDE APPLICATIONS
    • General Derating Rules
    • High Altitude Air Pressure Switch
    • Changing Orifices for High Altitude
    • Natural Gas Input Rating Check
      • Figuro 30
      • Typical Gas Piping for Upflow
      • Figure 31
      • Typical Gas Piping for Downflow
    • Gas Piping Requirements
    • Additional LP Connection Requirements
    • Final Check
  • 6. Electrical Wiring
    • Power Supply Wiring
    • J-Box Relocation
    • Thermostat
    • Optional Equipment
    • Humidifier/Electronic Air Cleaner
      • REDUCED FURNACE LIFE HAZARD
      • Failure to follow caution instructions may result in reduced furnace life.
      • Do NOT exceed 115V/0.8 amp. maximum current load for both the EAC terminal and the HUM terminal combined.
    • Control Center Fuse
    • Fan Control
  • 7. Ductwork and Filter
    • Installation
    • Sizing
    • Insulation
    • Filters
    • Filter Installation using Optional Filter Rack
    • Addition Of Air Conditioning
    • Downflow Furnace Installation Non-Combustible Floor Installation
    • Combustible Floor Installation
      • FIRE HAZARD
      • Failure to install unit on noncombustible subbase could result in death, personal injury and/or property damage.
      • Place furnace on noncombustible subbase on downflow applications, uniess installing on non- combustibie flooring.
    • Subbase for Combustible Floor
      • Figure 38
      • Furnace Subbase
      • Figuro 41
      • Condensate Line Raised by Base
  • 8. Checks and Adjustments
    • Startup
      • FIRE OR EXPLOSION HAZARD.
      • Failure to correct hazard could result in death, personal injury, and/or property damage.
      • If any sparks, odors or unusual noises occur, immediately shut OFF power to furnace. Check for wiring errors or obstruction to blower.
    • Manifold Gas Pressure Adjustment
    • Adjust Pilot Burner
    • Main Burner Flame Check
    • Temperature Rise Check
    • Changing Blower Speed
      • ELECTRICAL SHOCK HAZARD
      • Failure to do so could result in death and/or personal injury.
      • Turn OFF power to furnace before changing speed taps.
      • REDUCED FURNACE LIFE HAZARD
      • Failure to properly set the air temperature rise may result in reduced furnace life.
      • Use ONLY the following blower motor speed taps for setting air temperature rise.
    • Continuous Fan Operation
    • Separate speed selections for Heat, Cool, and Continuous Fan
    • Heating and Continuous Blower Speed the Same
  • 9. Furnace Maintenance
  • 10. Sequence of Operation & Diagnostics
    • Cooling (Y) Request:
    • Gas Valve Diagnostic Codes (See Figure 44)
      • LED
      • STATUS
      • INDICATES
      • CHECK/REPAIR
  • 11. Concentric Termination
    • Vent Termination Clearances
      • CARBON MONOXIDE POISONING, FIRE AND EXPLOSION HAZARD
      • Failure to properly vent this furnace could result in death, persona! injury and/or property damage.
      • Inlet and outlet pipes may NOT be vented directly above each other (standard vent terminals).
    • Concentric Vent Termination NAHA001CV & NAHA002CV
      • Figure 4S
      • Kit Components
      • Figuro 47
      • Concentric Vent Dimensional Drawing
      • Concentric Termination Kit NAHA001CV & NAHA002CV Venting Table for *9MPD Models
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    • Four Position Furnace
      • Model Specifications
        • Specifications (N9MP1)
        • Specifications (N9MP2)
        • Specifications (*9MPD)
        • iQ
        • Models - N9MP1050B12B1, N9MP1075B12B1, N9MP1080F16B1, N9MP1100F14B1, N9MP1100J20B1 &
        • N9MP1125J20B1 - N9MP2050B12B1, N9MP2075B12B1, N9MP2080F16B1, N9MP2100F14B1, N9MP2100J20B1 &
        • N9MP2125J20B1 (Natural Gas)
        • Replacement part supplied will be current active part. For parts not listed, consult place of purchase.
        • Models - N9MP1050B12B1, N9MP1075B12B1, N9MP1080F16B1, N9MP1100F14B1, N9MP1100J20B1 &
        • N9MP1125J20B1 - N9MP2050B12B1, N9MP2075B12B1, N9MP2080F16B1, N9MP2100F14B1, N9MP2100J20B1 &
        • N9MP2125J20B1 (Natural Gas)
        • Replacement part supplied will be current active part. For parts not listed, consult place of purchase.
        • Models - N9MP1050B12B1, N9MP1075B12B1, N9MP1080F16B1, N9MP1100F14B1, N9MP1100J20B1 &
        • N9MP1125J20B1 - N9MP2050B12B1, N9MP2075B12B1, N9MP2080F16B1, N9MP2100F14B1, N9MP2100J20B1 &
        • N9MP2125J20B1 (Natural Gas)
        • Replacement part supplied will be current active part. For parts not listed, consult place of purchase.
        • Models - N9MP1050B12B1, N9MP1075B12B1, N9MP1080F16B1, N9MP1100F14B1, N9MP1100J20B1 &
        • N9MP1125J20B1 - N9MP2050B12B1, N9MP2075B12B1, N9MP2080F16B1, N9MP2100F14B1, N9MP2100J20B1 &
        • N9MP2125J20B1 (Natural Gas)
        • Replacement part supplied will be current active part. For parts not listed, consult place of purchase.
        • Models - *9MPD050F12B1, *9MPD075F12B1, ’9MPD080J16B1, *9MPD100J14B1, *9MPD100J20B1 & *9MPD125L20B1 (Natural Gas) ‘Denotes Brand
        • Replacement part supplied will be current active part. For parts not listed, consult place of purchase.
        • Models - *9MPD050F12B1, ’9MPD075F12B1, ’9MPD080J16B1, *9MPD100J14B1, *9MPD100J20B1 & *9MPD125L20B1 (Natural Gas) ‘Denotes Brand
        • Replacement part supplied will be current active part. For parts not listed, consult place of purchase.
        • Models - *9MPD050F12B1, *9MPD075F12B1, ’9MPD080J16B1, *9MPD100J14B1, *9MPD100J20B1 & *9MPD125L20B1 (Natural Gas) ‘Denotes Brand
        • Replacement part supplied will be current active part. For parts not listed, consult place of purchase.
        • Models - *9MPD050F12B1, *9MPD075F12B1, ’9MPD080J16B1, *9MPD100J14B1, *9MPD100J20B1 & *9MPD125L20B1 (Natural Gas) ‘Denotes Brand
        • Replacement part supplied will be current active part. For parts not listed, consult place of purchase.