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