Document Outline

• N8MPN & N8MPL *8MPN & *8MPL
  • ama
• A WARNING
  • START-UP CHECK SHEET
  • 1. Safe Installation Requirements
• WARNING
  • Frozen Water Pipe Hazard
• WARNING
  • 2. Installation
• WARNING
  • Location and Clearances
• A WARNING
  • Installation Requirements
  • Installation Positions
  • Furnace Installation
• WARNING
• WARNING
  • Pressure Switch Relocation
  • Rotating the Venter Assembly
  • 4. Combustion & Ventilation Air
• WARNING
  • Contaminated Combustion Air
  • Outdoor Combustion Air Method
  • Air Openings and Connecting Ducts
  • Requirements
  • Indoor Combustion Air
• A WARNING
  • 5. Gas Vent Installation
    • Ventilation Air
• WARNING
  • Category I Safe Venting Requirements
  • Venting and Combustion Air Check
• WARNING
  • Venting to Existing Masonry Chimney
  • 6. Horizontal Venting
    • Category I Furnaces With External Power Venters
    • Vent Termination
  • 7. Masonry Chimney Venting
• A WARNING
  • 8. Gas Supply and Piping
• WARNING
  • Gas Supply Requirements
  • Gas Piping Requirements
• A WARNING
• WARNING
• WARNING
  • Final Check
  • 9. Electrical Wiring
• A WARNING
  • Power Supply Wiring
  • J-Box Relocation
  • Thermostat
  • Optional Equipment
• CAUTION
  • Furnace Control Fuse
  • Furnace Control
  • 10. Ductwork and Filter (Upflow/HorizontaO
• WARNING
  • Duct Installation Requirements
• WARNING
  • Filters
• CAUTION
  • Optional Filter Rack Installation: Side Return
  • Internal Filter in Bottom- Return Installation
  • Addition Of Air Conditioning
  • 11. Ductwork and Filter (Downflow)
• WARNING
• WARNING
• WARNING
• WARNING
  • 12. Checks and Adjustments
    • Gas Supply Pressure
    • Manifold Gas Pressure Adjustment
• WARNING
  • Natural Gas Input Rating Check
  • Orifice Sizing
• WARNING
  • MANIFOLD PRESSURE AND ORIFICE SIZE FOR HIGH ALTITUDE APPLICATIONS
  • High Altitude Air Pressure Switch
  • Changing Orifices
  • LP Conversion
• CAUTION
• WARNING
  • Main Burner Flame Check
  • Changing Blower Speed
  • Air Temperature Rise Check
• WARNING
  • 13. Furnace Maintenance
• WARNING
• WARNING
  • 14. Sequence of Operation & Diagnostics
    • Cooling (Y) Request:
    • Continuous Circulating Fan (G) Request:
    • Continuous Circulating Fan Hard-Wired (Cont) Request:
    • Heating (W) Request:
    • Heating Request with Gas Shut Off:
    • Control Board Diagnostic Codes (See Figure 40)
      • Z
  • Parts for N8MPN/L