SingleStage
Table of Contents
This page for future reference
Keep
YES NOE
YES
Safety Rules
FrozenWater Pipe Hazard
Installation
Location and Clearances
Typical Upflow Installation
Installation Requirements
Typical Downflow Installation
Dimensions & Clearances
Leveling
Combustion Ventilation Air
Air Openings and Connecting Ducts
Requirements
Example
Venting and Combustion Air Check
Unusually Tight Construction
Ventilation Air
Vent and Combustion Air Piping
For Two Pipe Installation
Single Pipe N9MP1 Models
Direct Vent N9MP2 Models
Piping Insulation Guidelines
TocompensateforoxygenburnedSee.Confined Space Installa
Contaminated Combustion Air
Vent and Combustion Air Piping Guidelines
N9MP1 & *9MPD Models
Sizing Combustion Air and Vent Pipe
Vent Termination Clearances
Carbon Monoxide POISONING, Fire and Explosion Hazard
Clearance Description
440O1102004
15cmforappliances10,OOOBTUH3kW,12
Condensate Drain Trap Freeze Protection
CondensateDrain Trap
Upflow Installations Top Vent See Figure
Upflow Installations Top Vent
Upflow Installations Vent thru Left Side See Figure
UpflowInstallationsVentthru LeftSide
Switch
Side View
All Models Vent thru Right Side See Figure
All ModelsVentthru RightSide
Only
Downflow Left Side Vent and Trap SeeFigure
Inlet 4=
Downflow Right Side Vent and Trap See Figure
Downflow Right Side Vent and Trap
PVC 3/4
Coupling & Clamps 112ID Drain Hose On Some
Horizontal Left-Thru Top See
Horizontal Left Thru Top
Horizontal Left-Side Vent
Horizontal Left-Side Vent See Figure
Yellowor black
Horizontal Right thru Top
16ID Rubber Tube\\
Relief Tube Extension
Horizontal Right Side Vent SeeFigure
HorizontalRight-SideVent
Connecting Vent and Combustion Air Piping
Connecting Tee Trap to Condensate Trap and Main Drain Line
Open Tee
Tee Trap
Proper Sealing Procedure for Combustion
Connecting Vent Pipes and Termination
Vent Pipe Connection
Fire Hazard
Horizontal Termination
Using Exterior Risers
Vertical Termination
Vent Termination Shielding
Concentric Vent and Combustion Air Sidewall Termination
Multi Vent Termination Clearances
Sidewall Inlet Vent and Exhaust Air Termination
CmbustincncentricRoof -AirTerminationventand
Supply Pressure
Manifold Gas Pressure Adjustment
Gas Supply Pressure
IAIternate Input Ratings, USA only
Pressure
Natural
For the 50,000, 75,000, 100,000 and 125,000 Btuh Models
Tai
General Derating Rules
High Altitude Air Pressure Switch
Electrical SHOCK, Fire or Explosion Hazard
Changing Orifices
Manual shut- off
Gas Piping Requirements
Low Pressure
Valve
Installations
Electrical Wiring
Power SupplyWiring
Humidifier/Electronic Air Cleaner
Fan Timer Connections
Fan Delay DIP Switch Settings
Reduced Furnacelife Hazard
Mountedto eithertheleftorright
Ductwork and Filter
Installation
Sizing
Insulation
Downflow Furnace Installation
Filter Installation using Optional Filter Rack
Combustible Floor Installation
Downflow applications, unless installing on non
FloorDimensions
SubbasesforCombustibleFloorsDimensions
Furnace Subbase
Adjust Pilot Burner
Checks and Adjustments
Gas SupplyPressure
Startup
Heating and Continuous BlowerSpeed Same
Temperature Rise Check
Changing Blower Speed
Reduced Furnace Life Hazard
FIRE, EXPLOSION, or Carbon Monoxide Hazards
Furnace Maintenance
Heating W Request
Circulating Fan G Request
Heating Request with Gas Supply Line Shut Off
Typical Gas Valve Honeywell
Gas Valve Diagnostic Codes See Figure
OFF
Than
Honeywell SV9541M Smart Valve Sequence of Operation
Flashes Flashes + I Flash
Honeywell SV9541M Smart Valve Trouble shooting
LED
Indicates
Vent Termination Clearances
Concentric Termination
Concentric Vent Termination Kit #
LED INDICATESCHECK/REPAIR
TicalterminationispreferredFieldsuppliedpipeandfittingsare
Requiredtocompletetheinstallation
Concentric Vent and Combustion Air Side Termination
Rain Cap to Vent Pipe Assembly
Table for N9MP2 Models 50,000 & 80,000 Btuh Furnaces
Roof Overhang
Air Elbow
Concentric Vent Sidewall Attachment
25-22-02
N9MP2100F14B1 N9MP2100J20B1 N9MP2125J20B1
N9MP2075B12B1 N9MP2080F16B1
Denotes Brand
25-23-30
Specifications N9MP1
Model Specifications
General
Gas & Ignition
Specifications N9MP2
BlowerData
Specifications 9MPD
For 075 Models 3 Ton Units
For 050 Models 3 Ton Units
For 100 Models Ton 19 & 22314 Units
For 080 Models 4 Ton 19 & 22314 Units
Neutral t
Ilttl
Data
UI I BKw
25-23-95
Functional
Key Description Part
125J
100J 125J
1GB
Non-Functional
14B 20B
12B 16B 14B
16B 14B 20B 12B
No. Non-Functional
N9MP1 N9MP2 Osob
Key Description
Part not Illustrated
NAHF002LP
Number 080F12B 075F12B 080J16B 100J14B
9MPD
100J20B 128L20B
Capacitor,7.SMfd.,370V
KeyDescription No.Non- Functional
Parts *gMPD
Number 050F12B 078F12B 080J16B 100J14B 100J2OB
125L20B
Non- Functional
Part GMPD
Number 050F12B 075F12B
080J16B
Non- Functional Number
1013816 + Order from Service Parts 44001
050F12B 075F12B 080J16B 100J14B
IOOJ20B