Sears Furnace Manual for N8MPN Models: Setup and Operating Instructions

Page 5

The air temperature rise is within the rated rise range on the furnace rating plate, and the firing rate has been setto the rating plate value.

The filters used to clean the circulating air during the

construction process must be either changed or thor- oughly cleaned prior to occupancy.

The furnace, ductwork and filters are cleaned as neces-

sary to remove drywall dust and construction debris from

all HVAC system components after construction is com- pleted.

Verify proper furnace operating conditions including igni-

tion, gas input rate, air temperature rise, and venting ac- cording to these installation instructions.

Dimensions and Clearances (N8MPN/L)

 

 

 

 

 

 

 

MINIMUM

CLEARANCES

TO

COMBUSTIBLE

 

MATERIALS

FOR

ALL

FURNACES

 

REAR

 

 

 

 

0

 

FRONT (combustion

air

openings

3"

 

in furnace

and structure)

 

 

 

 

Required

For Service

 

 

*24"

 

ALL SIDES Of SUPPLY PLENUM

1"

"24" Min.

SIDES

 

 

 

 

0

 

 

 

 

 

 

61/2

VENT

 

 

 

 

 

 

 

 

 

 

 

 

Single-Wall Vent

 

 

 

6"

 

Type B-1

Double-Wall

Vent

1"

 

TOP OF FURNACE

 

 

 

1"

LEFT SIDE

 

 

 

 

"30" clearancerecommendedfor furnaceremovaL

 

_-,__--

33/4

A

 

 

 

 

 

 

 

 

 

 

 

 

 

--

B--

Horizontalposition: Linecontactis permissibleonly betweenlines

 

 

 

 

formed by intersectionsof top andtwo sidesof furnacejacket, and

 

 

 

 

buildingjoists, studsor framing.

 

 

 

21/4

 

 

FRONT

 

 

 

 

 

 

 

 

 

 

 

Plugged starting

 

 

 

 

 

 

 

hole to cut side

 

 

I

 

281/2

--

 

 

 

 

-- 33/4 I,,_

I

 

18112 -

13114_1_ o_

'°pening

I 47/8

11/2

2F-_

/1 RIGHT SIDE

17/8 _

21314

®

I265/8

C__BOTTOM

Drawing is representative, but some models may vary

1_13t/4

I_ 41116

DIMENSIONS IN INCHES

DIMENSIONAL INFORMATION

11124,10 213,4

Furnace

Cabinet

Bottom

ReturnAir

Model

A

B

C

D

Opening

N8MPN/L05OB12

151/2

14

13/8

125i8

 

NSMPN/L075B12

 

 

 

 

N8MPN/LO75F16

 

 

 

 

 

N8MPN100F14

19118

175/8

21/8

143/4

 

N8MPN/L1OOF20

 

 

 

 

 

N8MPN/L1OOJ22

 

 

 

 

 

N8MPN/L125J20

22314

21114

115116

183/4

 

NSMPN/L125J22

 

 

 

 

 

265/8

Plugged starting holetocut

sideductopening

NOTE: Evaporator "A" coil drain pan dimensions may vary from furnace duct opening size. Always consult evaporator

specifications for duct size requirements.

Furnace is designed for bottom return or side return.

Return air through back of furnace is NOT allowed.

25-23-44al

441 O1 261302

[_

Image 5
Contents 80+SingleStage Limit Opens AddressDrip-Leg Upstream of Gas Valve? Yesi NOI Dealer NameFIRE, EXPLOSION, and Asphixiation Hazard Safe Installation RequirementsFrozen Water Pipe Hazard Installation RequirementsLocation and Clearances Carbon Monoxide Poisoning HazardDimensional Information Dimensions and Clearances N8MPN/LFurnace ReturnAirFurnace Installation Installation PositionsDimensions and Clearances *8MPN/L Models 41IHorizontal Typical Horizontal InstallationDownflow Fire HazardRotating the Venter Assembly Pressure Switch RelocationSide Venting Burn HazardCombustion & Ventilation Air Air Openings and Connecting DuctsOutdoor Combustion Air Method RequirementsSoffitVen ThisinstallationNOTapprovedin CanadaIndoor Combustion Air FreeAreaVentilation Air MINIMUMSPACEVOLUMEFOR100%COMBUSTIONCategory I Safe Venting Requirements Andventilationair Fromindoors ftVenting to Existing Masonry Chimney Venting and Combustion Air CheckVent Check Lowing CheckHorizontal Venting Category I Furnaces With External Power VentersVent Termination Combined Venting into a Masonry ChimneyIviventterminal Chimney Inspection Masonry Chimney VentingFailure to properly vent this furnace could result Authority having jurisdiction approvesSll Chimney Inspection ChartType-B Double-Wall Vent Connectors FAN+NAT Installations withExterior Masonry Chimney Nfpa & AGAVentdampersonanyapplianceconnectedto the common vent Gas Supply and PipingGas Pressures Typical Gas Piping N8MPPiping with Street Elbows Left Side Gas Supply Piping N8MPPiping with Close Nipples and Standard Elbows Typical Gas Piping aMP Final CheckPiping with Street Elbows Fire or Explosion HazardPower Supply Wiring Electrical WiringBox Relocation ThermostatFurnace Control Ductwork and Filter Upflow/HorizontalFurnace Control Fuse Duct DesignFilters Duct Installation RequirementsHigh-Velocity Air Filter Sizes max600FPM Risk of Reduced Furnace LifeInternal Filter in Bottom- Return Installation Optional Filter Rack Installation Side ReturnAddition Of Air Conditioning 20 x 25 Optional Filter RackDuctwork and Filter Downflow Sub-bases For Combustible Floors DimensionsOutlet Duct Flange Sub-Bases for Combustible Floors Furnace OnlySub-base for Combustible Floors Downflow Coil Exploded View of Sub-Base for Furnace onlyAdapter Box Non-Combustible FloorStartup Checks and AdjustmentsManifold Gas Pressure Adjustment Wiseto decreasemanifoldpressureand clockwiseto Orifice SizingNatural Gas Input Rating Check Operation Above 2000 AltitudeI! i! i I! i! i! i! i High Altitude Air Pressure SwitchChanging Orifices Natural GAS Manifold Pressure w.cMain Burner Flame Check LP ConversionFIRE, EXPLOSION, Unit Damage Hazard Removing NOx insertsChanging Blower Speed Hard Wired Continuous-Fan OperationIgnitor Location Reduced Furnace Life HazardSeparate speed selections for Heat, Cool, Ous-fanoptionThisconnectionisintendedfor.thelow speed moFIRE, EXPLOSION, or Carbon Monoxide Poisoning Hazards Electrical SHOCK, Fire or Explosion HazardContinuous Circulating Fan Hard-Wired Cont Request Sequence of Operation & DiagnosticsContinuous Circulating Fan G Request Heating W RequestHeating Request with Gas Shut Off Control Board Diagnostic Codes See FigureControl Board OFFDenotes Brand N8MPN050B12B1 N8MPL050B12B1N8MPN075F16B1 N8MPL075F16B1 General InputBtuh This Data is Subject to Change Without Notice44101261302 Limits& Controls 441olPSC/II2 PSC/I/2 Natto LP NAHA001LP1172958PSC/I/2 PSCII/2 PSCI3/4 NatlLP NatlLP NatlLP NatlLP NatlLP NatlLP NatlLP NatlLP8MPN 441Ol261302 N8MPN/L075B12& *8MPN/L075B121 * Denotes Brand N8MPN/L050B12& *8MPN/L050B121 DenotesBrandN8MPN/L075F16& *8MPN/L075F1613* DenotesBrand N8MPN100F14& *8MPN100F141 Denotes Brand44101261302 N8MPN/L125J2226ISMPN150J2027* DenotesBrand II,DUER%I .ICAPACITOR a Eutrali SwitchNdif Junction Relay Heatimhio\ u 16 \Nsmpn Replacement Parts N8MPN NaturalGasIoof Replacement Parts N8MPN NaturalGasKey Description Part 12B1 14B1 20B1Parts Not Illustrated 20A1 22A1N8MPL Replacement Parts N8MPL NaturalGasKey Description Part 050B 075F NSMPLIOOF2OB1 N8MPLIOOJ2OB1 NSMPLO75B12B1NSMPL125J22B1 NsmplParts for *8MPN/L IReplacement Parts *8MPN NaturalGas Panel Top Partnot Illustrated Key Description Parts *8MPL NaturalGas075B Replacement Parts 8MPL NaturalGas

8MPN125J20B1, N8MPL050B12B1, N8MPL100F20B1, 8MPN050B12B1, 8MPL075F16B1 specifications

Sears has long been recognized as a prominent name in the retail and home appliance industry, and its commitment to quality is evident in its range of products, including the N8MPN100F20B1, N8MPN100F14B1, 8MPL125J20B1, 8MPN100J20B1, and 8MPN075B12B1 models. These products combine advanced technology with user-friendly features to meet the demands of modern consumers.

The N8MPN100F20B1 and N8MPN100F14B1 models are equipped with innovative energy-saving technologies that help reduce electricity consumption while maintaining optimal performance. Both units feature robust insulation and efficient compressors designed for maximum cooling efficiency. They are also designed with smart controls, allowing users to customize their experience through programmable settings and remote access capabilities, ensuring comfort and convenience.

The 8MPL125J20B1 model stands out for its multipurpose functionality. This model is known for its impressive range of capabilities, making it suitable for various applications, from cooling to heating. Equipped with advanced thermal management systems, it ensures that the temperature remains consistent and comfortable, regardless of external conditions. This versatility, combined with an easy-to-use interface, makes it a favorite among households.

The 8MPN100J20B1 offers a sleek design paired with high-performance features. Its compact size makes it ideal for urban living spaces, while its quiet operation ensures minimal disruption. The model also boasts a high energy efficiency rating, aligning with modern sustainability trends. With its intuitive controls, users can easily adjust settings to match their preferences, ensuring a personalized environment.

Lastly, the 8MPN075B12B1 model is designed for those who value efficiency without sacrificing performance. This unit provides effective cooling solutions while being lightweight and easy to install. Its durable construction and reliability make it an excellent choice for both residential and commercial applications.

Overall, the Sears range of N8MPN and 8MPN models showcases the company’s focus on integrating technology with user convenience. Each unit is designed to deliver exceptional performance, energy efficiency, and versatility, making them essential additions to any home or office. With their advanced features and characteristics, these models demonstrate Sears' commitment to innovation and consumer satisfaction, reinforcing its legacy in the appliance industry.