Sears Essential Guide to N9MP Furnace Installation and Maintenance

Page 16

Upflow Installations Top Vent

ONLY

_

Caps(2)

ellowor black Plastic

Co_

(Optional)

VentDrain

&Clamps

Pressure Switch Detail

le Pressure Switch

ID RubberTube

1/2" ID Drain

 

StreetEIbow

Drain Connector Black PVC

/'CPVC

(Looseparts bag)

3/4"PVC X l/z" CPVC

 

(Loose parts bag)

 

Casing Grommet Black Rubber

5/8" ID

(Loose parts bag)

Drain Line Vent Tee 3/4"PVC or l/z" CPVC(Field supplied)

25-24-42

Drain Tube(& Clamps) Black Rubber /8 ID,

Cut length to fit (Loose parts bag)

Upflow Installations Top Vent (See Figure 9)

Remove plug from the side of the furnace casing where Drain Tu be will exit.

Install casing grommet (black rubber 5/8" ID grommet - in loose parts bag)

Install the 1/2" CPVC street elbow on discharge of Trap

Install the black PVC tube connector (3/4" PVC x 1/2" CPVC from loose parts bag) as shown in the illustration above.

Cut the black Drain Tube (5/8" ID - in loose parts bag) to length to fit between Trap and tube connector through grommet.

Clamp both ends of the Drain Tube using clamps provided.

Glue the CPVC street elbow to the Trap using appropriate cleaner and solvent cement.

Connect the Tee trap and the main drain line exiting the casing as shown Figure 18.

Note: It is recommended that all PVC piping and fitting connec- tions be fit up and inspected before final cementing. Trap must be

primed before operation. Verify all condensate drain connec- tions are securely clamped. A coupling and clamps (in loose part bag) may be installed as shown for future servicing of the vent sys- tem.

[_

440 01 1020 04

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Contents Table of Contents SingleStageKeep This page for future referenceYES NOE YESSafety Rules FrozenWater Pipe Hazard InstallationLocation and Clearances Typical Upflow Installation Installation RequirementsTypical Downflow Installation Dimensions & Clearances Leveling Combustion Ventilation Air Air Openings and Connecting DuctsRequirements Venting and Combustion Air Check ExampleUnusually Tight Construction Ventilation AirFor Two Pipe Installation Vent and Combustion Air PipingSingle Pipe N9MP1 Models Direct Vent N9MP2 ModelsTocompensateforoxygenburnedSee.Confined Space Installa Piping Insulation GuidelinesContaminated Combustion Air Vent and Combustion Air Piping GuidelinesSizing Combustion Air and Vent Pipe N9MP1 & *9MPD ModelsVent Termination Clearances Carbon Monoxide POISONING, Fire and Explosion Hazard440O1102004 Clearance Description15cmforappliances10,OOOBTUH3kW,12 CondensateDrain Trap Condensate Drain Trap Freeze ProtectionUpflow Installations Top Vent Upflow Installations Top Vent See FigureUpflowInstallationsVentthru LeftSide Upflow Installations Vent thru Left Side See FigureSwitch Side ViewAll Models Vent thru Right Side See Figure All ModelsVentthru RightSideOnly Inlet 4= Downflow Left Side Vent and Trap SeeFigureDownflow Right Side Vent and Trap Downflow Right Side Vent and Trap See FigurePVC 3/4 Coupling & Clamps 112ID Drain Hose On SomeHorizontal Left Thru Top Horizontal Left-Thru Top SeeHorizontal Left-Side Vent See Figure Horizontal Left-Side VentHorizontal Right thru Top Yellowor black16ID Rubber Tube\\ Relief Tube ExtensionHorizontalRight-SideVent Horizontal Right Side Vent SeeFigureConnecting Tee Trap to Condensate Trap and Main Drain Line Connecting Vent and Combustion Air PipingOpen Tee Tee TrapConnecting Vent Pipes and Termination Proper Sealing Procedure for CombustionVent Pipe Connection Fire HazardUsing Exterior Risers Horizontal TerminationVertical Termination Vent Termination ShieldingMulti Vent Termination Clearances Concentric Vent and Combustion Air Sidewall TerminationSidewall Inlet Vent and Exhaust Air Termination CmbustincncentricRoof -AirTerminationventandManifold Gas Pressure Adjustment Supply PressureGas Supply Pressure IAIternate Input Ratings, USA onlyNatural PressureFor the 50,000, 75,000, 100,000 and 125,000 Btuh Models TaiHigh Altitude Air Pressure Switch General Derating RulesElectrical SHOCK, Fire or Explosion Hazard Changing OrificesGas Piping Requirements Manual shut- offLow Pressure ValveElectrical Wiring InstallationsPower SupplyWiring Humidifier/Electronic Air CleanerFan Delay DIP Switch Settings Fan Timer ConnectionsReduced Furnacelife Hazard Mountedto eithertheleftorrightInstallation Ductwork and FilterSizing InsulationFilter Installation using Optional Filter Rack Downflow Furnace InstallationCombustible Floor Installation Downflow applications, unless installing on nonFloorDimensions SubbasesforCombustibleFloorsDimensionsFurnace Subbase Checks and Adjustments Adjust Pilot BurnerGas SupplyPressure StartupTemperature Rise Check Heating and Continuous BlowerSpeed SameChanging Blower Speed Reduced Furnace Life HazardFurnace Maintenance FIRE, EXPLOSION, or Carbon Monoxide HazardsHeating W Request Circulating Fan G RequestHeating Request with Gas Supply Line Shut Off Gas Valve Diagnostic Codes See Figure Typical Gas Valve HoneywellOFF ThanHoneywell SV9541M Smart Valve Sequence of Operation Honeywell SV9541M Smart Valve Trouble shooting Flashes Flashes + I FlashLED IndicatesConcentric Termination Vent Termination ClearancesConcentric Vent Termination Kit # LED INDICATESCHECK/REPAIRRequiredtocompletetheinstallation TicalterminationispreferredFieldsuppliedpipeandfittingsareRain Cap to Vent Pipe Assembly Concentric Vent and Combustion Air Side TerminationTable for N9MP2 Models 50,000 & 80,000 Btuh Furnaces Roof OverhangAir Elbow Concentric Vent Sidewall Attachment25-22-02 N9MP2075B12B1 N9MP2080F16B1 N9MP2100F14B1 N9MP2100J20B1 N9MP2125J20B1Denotes Brand 25-23-30Specifications N9MP1 Model SpecificationsGeneral Specifications N9MP2 Gas & IgnitionSpecifications 9MPD BlowerDataFor 050 Models 3 Ton Units For 075 Models 3 Ton UnitsFor 100 Models Ton 19 & 22314 Units For 080 Models 4 Ton 19 & 22314 UnitsIlttl Neutral tData UI I BKw25-23-95 Key Description Part Functional125J 100J 125JNon-Functional 1GB14B 20B 12B 16B 14BNo. Non-Functional 16B 14B 20B 12BKey Description N9MP1 N9MP2 OsobPart not Illustrated NAHF002LP9MPD Number 080F12B 075F12B 080J16B 100J14B100J20B 128L20B Capacitor,7.SMfd.,370VParts *gMPD KeyDescription No.Non- FunctionalNumber 050F12B 078F12B 080J16B 100J14B 100J2OB 125L20BPart GMPD Non- FunctionalNumber 050F12B 075F12B 080J16B1013816 + Order from Service Parts 44001 Non- Functional Number050F12B 075F12B 080J16B 100J14B IOOJ20B

9MPD100J20B1, N9MP2100J20B1, 9MPD050F12B1, N9MP1100J20B1, N9MP1125J20B1 specifications

The Sears N9MP1075B12B1, N9MPD125L20B1, N9MP1050B12B1, N9MPD080J16B1, and N9MP2125J20B1 are part of the trusted line of gas furnaces manufactured by Sears, specifically designed to deliver reliable heating solutions for residential applications. These models incorporate cutting-edge technology and robust engineering, making them popular choices among homeowners looking for efficiency and comfort.

One of the main features of these models is their high-efficiency operation. With Annual Fuel Utilization Efficiency (AFUE) ratings exceeding 90%, these furnaces convert a significant portion of fuel into usable heat, thereby reducing energy costs. The N9MP series employs a multi-speed blower system that optimizes airflow for enhanced comfort while minimizing noise levels, ensuring a pleasant indoor environment.

The N9MPD125L20B1 and N9MPD080J16B1 variants highlight their adaptability through dual-stage heating capabilities. This technology allows the furnace to adjust its output based on the thermal demands of the home, preventing energy wastage during milder conditions while providing robust heating during extreme cold spells. The two-stage combustion process not only improves comfort but also contributes to lower greenhouse gas emissions.

Durability is another hallmark of these Sears models. With heavy-duty heat exchangers crafted from high-quality materials, they are built to withstand the rigors of regular use. Additionally, the inclusion of advanced safety mechanisms ensures that the system operates securely, reducing potential risks associated with gas furnaces.

The N9MP2125J20B1 model stands out due to its whisper-quiet operation. Homeowners can enjoy a warm home without the disruptive sound commonly associated with traditional heating systems, thanks to the insulated cabinet design and efficient blower operation.

Furthermore, these models come equipped with user-friendly digital thermostats, which allow precise temperature control and programmable settings, enabling homeowners to tailor their heating needs to fit their lifestyle. The compatibility with smart home systems also adds convenience, enabling users to manage their heating remotely, saving even more energy.

In conclusion, the Sears N9MP1075B12B1, N9MPD125L20B1, N9MP1050B12B1, N9MPD080J16B1, and N9MP2125J20B1 gas furnaces exemplify innovation in heating technology. Their energy-efficient designs, advanced features, and durable construction make them reliable choices for homeowners seeking comfort and sustainability in their heating solutions.