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