Sears N9MP2, N9MP1, 9MPD manual Cap, Return, Air Clamps, Modelsshownhave Twopressureswitches

Page 24

Horizontal Right Installations (Single Pipe & Direct Vent N9MP1 & N9MP2-A4 Models)

 

 

Vent

Fitting

NOTE: TRAP MUST BE PRIMED BEFOREPlasticOPERATIONveniipls_lv_

& Clamps

 

Combustion

Cap

 

 

Air Pipe,

\

\ \

 

N9MP2 ONLY

 

 

%

518" Hose &\

Return

Air

Clamps _

Inlet

 

 

 

 

 

Supply

 

 

 

 

 

Air

Modelsshownhave__

 

 

 

 

twopressureswitches

 

 

 

 

 

 

 

 

 

dwg 25-23-59a

Horizontal Trap Connection

 

 

 

 

Pressure

Switch

 

 

Plastic

Pressure

3/4"

 

 

Hose

 

"Clamp

ears"

Cap

Switch, Transition

 

Hose,

Transition

 

ps

 

Pointed

OUT

 

 

 

 

 

 

 

Condensate

 

 

 

 

 

Trap &

Gasket

Switch,

Blower

 

 

Preassemble

 

 

 

 

 

and

insert

Drain

Line

 

 

 

 

 

 

 

into furnace

Connections on all

models except 125

Single Pressure Switch

Horizontal Right Installations - (Single Pipe & Direct Vent N9MP1 & N9MP2 Models) (SeeFigure16)

NOTE: DO NOT make hose connections until the hose routing

and lengths have been determined. Remove the condensate trap and drain hoses from the furnace and secure the drain hoses to

the drain stubs on the trap with the hose clamps (position the clamps as shown in Figure 16). Install the condensate trap/hose assembly to the furnace casing. Hook one side of the "clamp ears" on the drain stub through the hole in the casing and push the con- densate trap into position. Secure with the two screws. Recon- nect the drain hoses to the stubs on the vent fitting and the plastic transition and secure with the clamps.

Relocate the plastic caps and clamps on the condensate drain trap from the vertical drain stub to the horizontal drain stubs. Se-

cure the clamps tightly to prevent condensate leakage.

Mount the condensate drain trap in a vertical position to the right side of the furnace using the two screws and gasket that are pro-

vided. Note: The condensate trap will be located under the fur- nace in a vertical position when the furnace is placed horizontally on the right side. If needed, remove the hole plugs from the fur- nace side panel and relocate to the open set of holes in the oppo- site side panel.

NOTE: All gaskets and seals must be in place for sealed combus- tion applications.

Ensure that the vent fitting is securely attached to the combustion blower using the clamps.

NOTE: The vent fitting MUST be installed with the airflow marking arrow pointed toward the vent pipe.

Plug the left drain stub on the vent fitting with the yellow plastic cap.

Remove the pressure switch hose from the upper stub on the plastic transition box.

Relocate the plastic ca ps on the stubs of the plastic transition from the lower stubs to the upper stubs and secure tightly with the clamps.

Route the pressure switch hose to the lower stub on the plastic transition box. Cut off excess hose and discard. Connect the

pressure switch hose to the lower stub on the plastic transition box. Ensure that the hose is routed above the stub on the transi- tion box so that condensate does not collect in the hose. NOTE:

Failure to correctly install the pressure switch hose to the transi- tion can adversely affect the safety control operation.

[_

440 01 111400

Image 24
Contents SingleStage Denotes Brand MP D 0 75 F 12 a #JellJill 440 01 1114Furnace/Drip- Leg? YES Date of Start-UpCO2 ? Frozen Water Pipe Hazard Frozen and Burst Water Pipe HazardInstallation Typical Upflow InstallationLocation and Clearances Winter ShutdownInstallation Requirements Installation PositionsFurnace Installation Considerations LevelingDimensions & Clearances VENTrgMPDAiRI.TAKE TOPCombustion & Ventilation Air For Single Pipe Installation Air Openings and ConnectingDuctsHorizontal Furnace Installation Confined Space Installation RequirementsUnconfined Space Installation EhrFree Area Venting and Combustion Air Check Vent CheckMake the Following Check HoodVent and Combustion Air Piping Single Pipe N9MP1 ModelsDirect Vent N9MP2 Models Dual Certified gMPDModelsPiping Insulation Guidelines Sizing Combustion Air and Vent PipePipe Diameter Table N9MP2 Models Vent Termination ClearancesCondensate Drain Trap Condensate Drain Trap Freeze ProtectionUnited States Only Canada See Canadian Fuel Gas Code OtherThanUpflow Installations Dual Certified *9MPD-A4 Models YellowPlasticCapDrainLine TransitionSomemodels MountingScrews4Drain HorizontalLeft Installations Dual Certified *9MPD-A4Models 25-24-12Switch Hose Si.g.Pre...reSwitchRpeept.oT \ e.spre X3L/\Page ReturnAir Page Left Side Venting Satetrapandsecurewitha3/4clamp Boxandsecurewitha3/4clamp Drainstubonthetransitionandsecurewitha3/4clampStubonthecondensatetrapandsecurewitha3/4clamp VentFitting TPipe & Clamps InletReturn Air Modelsshownhave Twopressureswitches CapReturn Air ClampsLeft Connecting Vent and Combustion Air Piping Combustion Air Pipe Connection Dual Certified orVent Pipe Connection PVCProper Sealing Procedure for Combustion Blower Horizontal TerminationVent Pipe Using Exterior Risers Checkholesizesbymakingsureitissmallerthan the couVertical Termination Vent Termination ShieldingEi271Recommended Alternate Installation for Sustained Cold Concentric Vent and Combustion Air Sidewall TerminationSidewall Inlet Vent and Exhaust Air Termination Rooftop Inlet Vent and Exhaust Air TerminationManifold Gas Pressure Adjustment Alternate Btuh Input RatingsUSA OnlySupplyPressure Gas Supply PressureHigh Altitude Air Pressure Switch Changing Orifices for High AltitudeGeneral Derating Rules Changing OrificesNatural Gas Input Rating Check Typical Gas Piping for UpflowExample Electrical Wiring Power SupplyWiringHumidifier/Electronic Air Cleaner Gas Piping RequirementsInstallation Fan Delay DIP Switch SettingsFan Timer Connections Ductwork and FilterFilter Installation using Optional Filter Rack SizingInsulation FiltersCombustible Floor Installation Availablefromyourdistributor StandoffFilterRackAddition Of Air Conditioning Ubbase for Combustible FloorFurnace Subbase Coil CabinetChecks and Adjustments Adjust Pilot BurnerTemperature Rise Check Main Burner Flame CheckTochecktemperaturerise,usethefollowingprocedure Heating and Continuous BlowerSpeed the SameChanging Blower Speed Continuous Fan OperationGas Valve Diagnostic Codes See Figure Circulating Fan G RequestHeating Request with Gas Supply Line Shut Off OFFTypical Gas Valve Honeywell Honeywell SV9541M Honeywell SV9541M Smart Valve Trouble shooting FlashesFlashes + Flashes + SoftLockoutConcentric Termination Vent Termination ClearancesConcentric Vent Termination Kit # Arerequiredtocompletetheinstallation Concentric Vent Roof InstallationRain Cap to Vent Pipe Assembly Concentric Termination Kit NAHA001CV & NAHA002CV VentingConcentric Vent and Combustion Air Side Termination Concentric Vent Sidewall Attachment 25-22-02440011114O0 N9MP2075B12A4 N9MP2080F16A4 N9MP2100F14A4 N9MP2100J20A4 N9MP2125J20A4Save This Manual For Future Reference Denotes BrandSpecifications N9MP1 GeneralSpecifications N9MP2 Snap HW HSP HwhspNAHA001LV NAHAO01LV NAHA002LV PSC/I/2 PSC/II2Specifications 9MPD 3OONAHA00SLV For 075 Models 3 Ton Units For 100 Models Ton 19 & 22314 UnitsFor 100 Models 5 Ton 223/4 Units For 125 Models 5 Ton UnitsConnection Diagram Disconnect Before Servicing Ladder DiagramD22 = = =@O,c25-23-95 FF18Key Description Part Functional125J 100J 125JO50B 075B 080F LOOF LOOJ 125J IoofLOOJ 125J Non-Functional Number 12A 1GAKeyDescription No. Non-Functional NgMP1 050B 075B 080F 100F 100J 125J Number100F 100J 16A 14A 20AKeyDescription No.Functional Heat Exchanger,Primary Heat Exchanger,SecondaryGMPD Number 050F12AKeyDescription No.Non- Functional Models *9MPDO50F12A4, Natural Gas Replacement part supplied 080J16ANon-Functional Key DescriptionNon- Functional Number

9MPD, N9MP1, N9MP2 specifications

The Sears N9MP2, N9MP1, and 9MPD are prominent models in the realm of residential heating systems, specifically designed to provide efficient and effective heating solutions. These models are part of Sears' commitment to quality and innovation, making them a popular choice among homeowners seeking reliability and performance.

The N9MP2 is a high-efficiency multi-speed gas furnace that boasts an impressive AFUE (Annual Fuel Utilization Efficiency) rating. This feature allows the furnace to convert a significant portion of fuel into usable heat, which effectively translates to lower energy bills for homeowners. The unit is equipped with a two-stage gas valve that provides increased comfort by adjusting the heating output based on demand, ensuring an even temperature throughout the home.

The N9MP1, like its counterpart, is known for its reliability and efficiency. It offers a single-stage operation that is ideal for homes needing consistent heating without the necessity for the more complex stages present in two-stage systems. This model also has a good AFUE rating, making it a cost-effective solution for families looking to reduce their heating expenses. Its design is tailored for easy installation and maintenance, allowing homeowners to keep their heating systems running at optimal performance without hassle.

The 9MPD model takes a step further with its advanced technology integration. It features a sophisticated control board that allows for easier diagnostics and enhanced system management. The 9MPD is also designed with quiet operation in mind, employing advanced sound-reduction technologies to minimize noise levels during heating cycles. Homeowners will appreciate the peace and quiet it brings, particularly in shared living spaces.

All three models are equipped with high-quality insulation and specialized heat exchangers that enhance their thermal efficiency. Additionally, they are designed with safety features such as automatic shut-off systems and robust flame rollout protection, ensuring a safe heating experience.

In terms of characteristics, these models are generally constructed with durable materials, designed to endure harsh weather conditions while providing consistent heating. They can be connected to various home automation systems, which adds to their appeal for tech-savvy consumers.

In conclusion, the Sears N9MP2, N9MP1, and 9MPD represent a comprehensive lineup of reliable, efficient, and technologically advanced heating systems suitable for contemporary homes. Their dedication to performance ensures that homeowners enjoy a warm and energy-efficient environment throughout the chilly seasons.