N8MPN& N8MPL *8MPN& *8MPL 80+Single Stage Category I Furnace See section 5 for Category [ definition. SAFETY Recognize safety to the potential Understand words hazards, those CAUTIONis highlight install, Untrained performed service to or shipped Follow all safety safety These glasses es. We require personnel. gloves. cover certain these International Lewisburg, you see this symbol on the furnace and in instruction manuals be alert personal that could words or death.
START-UP (Keep Recommended, Dealer but not this page CHECK for future SHEET reference) required, Name: Address: City, Business Card Here Zip or Postal Code: State(Province), Phone: Owner Name: Manual Gas Shut-Off Upstream Address: City, State(Province), Zip or Postal Code: of Furnace/Drip- Leg? YES_I NO_I Drip-Leg Upstream of Gas Valve? YES_I NO_I Blower Speed Checked? NO [_I YES _1 Model Number: YEs_I All Electrical Connections Tight? Serial Number: NO[31 Gas Valve turned ON
1. Safe Installation Requirements FIRE, EXPLOSION, AND ASPHIXIATION HAZARD Improper adjustment, alteration, service, maintance or installation could cause death, personal injury, and/or property damage. Installation or repairs made by unqualified persons could result in hazards to you and others. Installation MUST conform with local codes or, in the absence of local codes, with codes of all governmental authorities having jurisdiction.
Frozen Water Pipe Hazard Ifyourfurnace home could remains off for an extended time, the pipes in your freeze and burst, resulting in serious water damage. If the structure will be unattended take these precautions. FROZEN AND BURST WATER you should Turn off the water supply to the structure and drain the water lines if possible and add an antifreeze for potable water to drain traps and toilet tanks. Open faucets in appropriate areas.
The air temperature rise is within the rated rise range • on The filters used construction oughly to clean process cleaned the must prior circulating be either air during changed the • or thor- to occupancy. Dimensions and Clearances 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 completed.
Dimensions and Clearances (*8MPN/L Models) MINIMUM CLEARANCES MATERIALS TOP TO COMBUSTIBLE FOR ALL UNITS REAR 0 FRONT (combustion air openings in furnace and structure) 3" 5113 Required For Service *24" _E "24"Min. ALL SIDES Of SUPPLY PLENUM 1" SIDES 0 VENT LEFT SIDE Single-Wall -- 3314 5f__ _ _1 --A_ -- • Plugged starting I hole to cut side 7/8 38 Vent 6" Type B-1 Double Wall Vent TOP OF FURNACE B 1" 1" "30" clearancerecommendedfor furnaceremoval.
The horizontal iiiiiiiiiiiiiiiii_!!!!!!!!:!i:iil ¸;i ¸ii ¸ii ¸ii ¸ii ¸ii ¸ii ¸ii¸i ¸ii ¸ii ¸ii ¸iiiiliiiiii;;;iiiiiiii;i;il;i;i;i;iiii_ilili;i;i;i;;i;i;il;i;iiiii ¸i;iiiii!!! furnaces may be installed directly i!i!i!i!i!i!i!i!i!i!i! ii i ! i ! i!! T p,ca, ii!i!!i!iiii! iUp.ow i i i ,nsta.
3. Newlabelsforrightside-up application onoutside ofblower compartment doormaybepurchased inakitfromyourdistributortocoverupside-down labels. Downflow Venting: Thecombustion venterMUSTberotated to ventoutthesideforalldownflow installations, (seeFigure5).Bottomventing isnotpermitted. See"Side venting"forinstructions to rotate theventtotheside.Inaddition torotating theventtotheside a VentPipeShield(NAHAOO2VC) is required toshieldthehot ventpipe.
7. Tighten the three assembly compress 8. (3) or four (4) screws to the collector venter gasket. Replace pressure power leads switch. that secure box. Do tighten to venter 4. Combustion motor the venter screws enough and reconnect to hose to & Ventilation NOTE: Unused open vent hole must be covered. A Vent Cover is supplied with Vent Pipe Shield Kit NAHAOO2VC.
Outside Air (This is ONLY a guide. SubJect to codes of country having jurisdiction.) ThisinstallationNOTapprovedin Canada GasVent Vent G Vent _j_.Gable , GableV_/) ba_ventilated (1) I I/ Soffit Vent I 1 I_ TM SoffitVen, Outlet/1_ _. F...... Air (1) €_:;;_l utletAir (1) II Inlet Attic'_ Top Above Insulation_ Air(1) NG_ _,, _ r-_ -- Inlet Air (2) Inlet Air (1) ........
The Standard Method may be used, if the space has no less vol- (ACH) and equal to or greater than 0.10 ACH. ume than 50 cubic feet per 1,000 BTUH of the maximum input ratings for all gas appliances installed in the space. The standard method permits indoor air to be used for combustion and ventilation air. greater than 0.60 ACH shall not be used.
Z223.1-2002/N FPA 54-2002; and/or Section 7andAppendix Cof theCSAB149.1-05, National Standard ofCanada, Natural Gas andPropane Installation Code; thelocalbuilding codes; furnace andventmanufacturer's instructions. NOTE: The following instructions comply with the ANSI Z223.1/NFPA 54 National Fuel Gas Code and CSA B149.1 Natural Gas and Propane Installation code, based on the input rate on the furnace rating plate.
.2 or a listed, metal lining system. (See Section Chimney Venting of these instructions.) 7 Masonry Listed, corrugated metallic chimney liner systems in masonry chimneys shall be sized by using NFGC tables per 13.1.7 for dedicated venting and per 13.2.19 for common venting with the maximum capacity reduced by 20% (0.80 X maximum capacity) and the minimum capacity use the NSCNGPIC, as shown in the applicable appendix C, section 10. table.
Other than Direct Vent Termination iiiiiiiiiiiiiiiiiiiiiiiiiiiii i i! ii ii ! i ! !iClearance ! ii i i i i i i i i i i i IVIVENTTERMINAL Item A Clearance AIRSUPPLVINLET Descriptions Canadian Clearance above grade, veranda, porch, deck, balcony, or Installation AREA WHERE TERMINAL (1) IS NOT PERMITED U.S. Installation (2) 12" (30cm) # 12" (30 cm) 6" (15 cm) for appliances _< 10,000 BTUH (3kW), 12" (30 cm) for appliances > 10,000 Btuh (3 kW) and _<100,000 Btuh 4' (1.
7. Masonry Chimney Venting Chimney Inspection Ira claytile-lined All masonry chimney construction must conform to Standard ANSI/NFPA 211-2003 and to any state or local codes applicable. The chimney must be in good condition and a complete chimney to the outdoors below the roof line, relining might be required.
CHIMNEY INSPECTION CHART Foradditionalrequirementsrefertothe NationalFuelGasCodeNFPA541ANSIZ223.1-2002andANSIINFPA211-2003Chimneys,Fireplaces,Vents,andSolidFuel Burnin9 Appliancesin the U.S.A. or to the CanadianInstallationCodeCSA B149.1-05 in Canada. I Rebuild Reline andtile debris? Removemortar 1_ .._ Yes tile m.isalignment, mg sections, _10 No Oondonsoto Not Suitable adapter venting ins[ruc_lons Tor /,%-\ opp,cotion / w ",,
If the inspection Exterior Masonry Chimney, FAN+NAT Installations with Type-B Vent Connectors © NFPA & AGA Table ACombined Appliance Maximum Input Rating in Thousands of Btu per Hr INTERNAL 12 19 28 38 6 74 119 178 257 8 80 130 193 279 10 84 138 207 299 15 NR 152 233 334 20 NR NR 250 368 30 NR NR NR 404 INTERNAL (FT) 12 a UL listed (ULC listed in Canada) vent. Relining with a listed metal ered to be a vent-in-a-chase.
Ventdampers onanyappliance connected to the common vent can cause condensation and corrosion in the venting system. Do not use vent dampers on appliances common vented with this furnace. 8. Gas Supply and Piping Gas Piping Requirements CARBON MONOXIDE EXPLOSION HAZARD. Failure to follow result in serious damage. POISONING, FIRE AND NOTE: The gas supply line must be installed by a qualifted technician in accordance with all building codes.
Use ground joint unions and install a drip leg no less than 3" long to trap dirt and moisture before it can enter gas control valve inside furnace. 5, 6, Provide a 1/8" NPT plugged tapping for test gauge connection immediately up stream of gas supply connection to furnace. 7. Use two pipe wrenches when making connections furnace gas control valve from turning.
2. Follow steps 2 through 4 Piping with Street Elbows. Typical Gas Piping ('aMP) FIRE OR EXPLOSION HAZARD. Failure to properly result in death, damage. install metal gas connector could personal injury and/or property A flexible corrugated metal gas connector must be properly installed, shall not extend through the side of the furnace, and shall not be used inside the furnace. Black iron pipe shall be installed at the furnace gas control valve and extend a minimum of 2" outside furnace.
9. Electrical Wiring *8MPN/L Models ELECTRICALSHOCK The J-box is installed in the burner casing. An alternate J-box location HAZARD. Failure to follow safety warnings result in death or personal injury. exactly could Turn OFF electrical power at fuse box or service panel before making any electrical connections and ensure a proper ground connection is made before connecting line voltage.
Electrical Furnace Control Fuse Connections The 24V circuit contains a 5-amp, automotive-type on furnace control. (See Figure 20) Any electrical fuse located shorts of 24V wiring during installation, service, or maintenance may cause fuse to blow. If fuse replacement is required, use only a fuse of identical size (5 amp.). Control 115V.60Hz. Connections Gr_nd 24v c4. Jumper _>_/___ Thermostat I L ! ] , I _ _ _ _ DiagnosticLight .
area. It is often advisable floor or through the attic, to route the return air ducts under the Filters are not supplied • Refer to furnace Technical for air flow information. • Size ductwork to handle air flow for heating (and air conditioning if so equipped). Support Manual (Blower Data) See Table but can be purchased 4 for required high-velocity filter sizes.
Internal Filter in Bottom- Return Installation Optional Duct Standoff 20 x 25 Optional Filter Rack When installing a bottom-mounted filter inside the furnace, install the filter clips on the edge of the bottom duct opening with the wider end of the clips toward the blower, as shown in Figure 25. Clips may be obtained from your distributor or fabricated from sheet metal (Figure 26). Insert filter into side clips first and push filter back until it is fully engaged into back clip.
11. Ductwork and Filter (Downflow) CARBON MONOXIDE POISONING HAZARD. FIRE HAZARD. Failure to properly seal duct could result in death or personal injury. Do NOT draw return air from inside a closet or utility room where furnace is located. Return air duct MUST be sealed to furnace casing. Failure to install furnace on noncombustible subbase could result in death, personal injury and/or property damage.
Exploded View of Sub-Base Furnace ONLY for Exploded Downflow View of Base for Cased Coil Combustible Floor Base I tr Combustible FloorBase 25-21-46b iiiiiiiiiiiiiiiiiiii_i_}! ¸i!}!i}!;;i;iiii! i;;i;i lllliii;}i¸i ¸i¸i¸i¸ i¸ii;i;i ¸;}i;;i;;i;;i;;i;;i;l iiiiii ¸iiiiiiiiiiiiiii iilii}i Setting ¸i!i i¸i Setting the Base Subbase Insulation '_ the Base / II Subbase Furnac_ Insulation / Wood Floor Plenum 25-20-46A _.
Duct Design and Duct Installation Requirements See Section 10. Internal Filter in Top Return Installation When instal ling top-mounted filter inside the furnace, install the fil- ter clips on the edge of the top duct opening with the wider end of the clips toward the blower as shown in Figure 32. Clips may be obtained from your distributor or fabricated from sheet metal (Figure 33). Insert filterintosideclips it is fully engaged into back clip. firstand push filter backuntil 26 Ga.
wiseto decrease manifoldpressureand clockwise to increase NOTE: Adjustment screw cover MUST be replaced on gas control valve before reading manifold pressure and operating furnace. Set manifold 4, 5. pressure to value shown in Table 6 or Table When the manifold pressure is properly set, replace justment screw cover on the gas control valve. the ad- board. Remove manometer connection from manifold presRemove jumper wire from thermostat connection on fan sure tap, and replace plug in gas valve. 7.
MANIFOLDPRESSUREAND ORIFICE SIZE FOR HIGHALTITUDEAPPLICATIONS NATURAL GAS MANIFOLD PRESSURE (" w.c.) .............................................................. MEAN ELEVATION FEET ABOVE SEA LEVEL HEATING 0 to 2001 to 3001 to 4001 to 5001 to 6001 to VALUE 2000 3000 4000 5000 6000 7000 at ALTITUDE BTU/CU. FT. Orifice No. Manifold Pressure Orifice No. Manifold Pressure Orifice No. Manifold Pressure Orifice No. Manifold Pressure Orifice No.
9. After reassembling, turn gas on and check all joints for gas leaks using a soapy solution. All leaks must be repaired immediately. Removing NOx inserts Clearances Measure from face of orifice batck side of the manifold, 29.3 +_11"5mm to the "\k,,..k--..,.,.r_ j 25-40-03 LP Conversion I the furnace rating plate for the LP conversion accessory kit part An accessory kit shall be used to convert to propane gas use, see number. CARBON Failure death, injury.
Ignitor Changing Blower Speed Location ELECTRICAL SHOCK HAZARD. Failure to disconnect power could result in death, personal injury and/or component damage. Turn OFF power to furnace before changing taps. NOTE: Flame sensor has a different orientation in all 050 models. NOTE: The speed taps that the manufacturer sets at the factory for this furnace are based on a nominal 400 CFM per ton cooling and the basic mid range on the temperature rise for heating.
ous-fan option. Thisconnection isintended forthe low speed mo- tor tap, and has a lower contact rating (8 amps) than the heat and cool taps. When the low speed blower lead is connected to this terminal, this will provide low speed blower operation whenever the other two speeds (Heat or Cool) are not energized. EAC not powered in this mode. Thoroughly check proper operation tion. Continuous-Fan Connect low speed lead from circulating air motor to the "Cont" terminal at the furnace control board.
14. Sequence The following of Operation is the normal operating & Diagnostics sequence. Cooling (¥) Request: 24VAC • signals applied Cool motor speed Y & G signals removed • speed Cool motor Continuous to Y & G terminals is energized from Circulating is applied • speed Heat motor G signal • removed Heat motor from NOTE 1) Furnace unless a blower NOTE 2) Heating de-energizes • blower requests NOTE 3) time. delay. delay.
Heating Request with Gas Shut Off: 24 VAC signal applied to W terminal of FCB. The FCB will attempt 4 cycles for ignition Power reset will clear lockout.
II I I ® I Save This Manual For Future Reference Models N8MPN050B12B1 N8MPN075B12B1 N8MPN075F16B1 N8MPN100F14B1 N8MPN100F20B1 N8MPN100J22B1 N8MPN125J20B1 N8MPN125J22B1 N8MPL050B12B1 N8MPL075B12B1 N8MPL075F16B1 N8MPL100F20B1 N8MPL100J22B1 N8MPL125J20B1 N8MPL125J22B1 *8MPN050B12B1 *8MPN075B12B1 *8MPN075F16B1 *8MPN 100F14B1 *8MPN100F20B1 *8MPN100J20B1 *8MPN125J20B1 *8MPN 150J20B1 *8MPL050B12B1 *8MPL075B12B1 *8MPL075F16B1 *8MPL100F20B1 *8MPL100J20B1 *8MPL125J20B1 * Denotes Brand International Comfort Lew
ManufacturersNumber (Mfr No -See RatingPlate) ALL Models(N8MPN) Specifications N8MPN N8MPN N8MPN N8MPN N8MPN N8MPN N8MPN N8MPN 050B12 075B12 075F16 100F14 100F20 100J22 125J20 125J22 General Input(Btuh) Output (Btuh) Temp.
ManufacturersNumber (Mfr No -See RatingPlate) ALL Models(N8MPL) Specifications N8MPL N8MPL N8MPL N8MPL N8MPL N8MPL N8MPL O5OB12 O75B12 O75F16 1OOF20 1OOJ22 125J20 125J22 Input(Btuh) Output (Btuh) Temp. Rise (F) 50,000 40,000 35-65 75,000 60,000 35-65 75,000 60,000 25-55 100,000 80,000 35-65 100,000 80,000 30-60 125,000 100,000 30-60 125,000 100,000 30-60 Electrical(VoltslHz) 115160 115160 115160 115160 115160 115160 115160 Rating PlateAmps. 9.7 9.2 9.7 11.7 13.2 11.7 13.
ManufacturersNumber (Mfr No -See RatingPlate) ALL Models(*8MPN) Specifications *8MPN *8MPN *8MPN *8MPN *8MPN *8MPN *8MPN *8MPN 050B12 075B12 075F16 100F14 100F20 100J20 125J20 150J20 Input(Btuh) Output (Btuh) Temp.
ManufacturersNumber (Mfr No -See RatingPlate) ALL Models(*8MPL) Specifications *8MPL *8MPL *8MPL *8MPL *8MPL *8MPL 050B12 075B12 075F16 100F20 100J20 125J20 Input(Btuh) Output (Btuh) Temp. Rise (F) 50,000 40,000 35-65 75,000 60,000 30-60 75,000 60,000 30-60 100,000 81,000 35-65 100,000 81,000 35-65 125,000 101,000 35-65 Electrical(VoltslHz) 115160 115160 115160 115160 115160 115160 Rating PlateAmps. 9.7 9.0 9.7 12.0 12.0 12.0 .at l_P .at l_P General OasType .at l,P .
15. 1 Circulation Air Blower Data (CFM) N8MPN/L050B12& *8MPN/L050B12(1) • DenotesBrand Air Delivery = in Cubic (Furnace Feet per Minute Rated @0.5" WC 1N8MPN/L100F20 & *8MPN/L100F20(2)(4) • DenotesBrand Air Delivery (C,F.M.) u_ O _ TAP ,10 LOW 472 MED L 704 MED H 1167 LOW MED L MED H HIGH 831 1125 1582 2216 '-£ To .30 814 1123 1588 2179 _ .50 781 1117 1577 2074 =u .70 717 1053 1541 1909 .90 609 964 1373 1745 1.
Circulation • Air Blower Data Continued N8MPN/L125J22(2)(6) _ISMPN150J20(2)(7) * DenotesBrand Air Delivery = in Cubic (Furnace O _ TAP ,10 Feet per Minute Rated LOW 1901 @0.5" MED L 2121 WC (C.F.M.) ESP) Air Delivery = MED H 2362 HIGH 2463 ,£ in Cubic (Furnace u_ u_ Feet per Minute Rated @0.5" WC (C.F.M,) ESP) ._ t; a. ;_ ,u T.. o TAP .10 LOW 1656 MED L 1915 MED H 2168 HIGH .30 1583 1787 2090 2335 2385 _o ,30 ,50 1833 1745 2033 1936 2244 2100 2385 2217 _.
+ + WARNING: CONNECTION DIAGRAM ROLLOUT SWITCH+TO2 INSERIESDEPENDING ONMODEL MAIN LIMIT --R _i R __R f_._ °. 2 / (WHEN USED) -- Y -@-_ I I° . ..... '%... II II I I III, I_=_'_ I_ _ W O__ III _ II I _[-_-r _ 1.1_ k x ' ___ .... + 105°C. 4. provename. Symbols are electrical •.... 5. not as shown the legend. Soliddepicted lines inside circuit inboard are printed circuJt board traces and are 6. 7. Replaceonlywitha5ampfuse.
Parts for N8MPN/L 2 AA 17 16 \ \ u F E S 3 4 H 6 25-25-09 441 01 2613 02 [_
[ Replacement Models - N8MPNO50B12B1, NSMPNO75B12B1, NSMPN125J20B1, NSMPN125J22B1 Replacement part supplied Parts N8MPNO75F16B1, - N8MPN (Natural Gas) NSMPN100F14B1, N8MPNIOOF2OB1, will be current active part. For parts not listed, consult I N8MPNlOOJ22B1, place of purchase. NSMPN No.
[ Replacement Models - N8MPN050B12B1, NSMPN075B12B1, N8MPN125J20B1, NSMPN125J22B1 Replacement part supplied Parts N8MPN075F16B1, I - N8MPN (Natural Gas) NSMPN100F14B1, N8MPN100F20B1, will be current active part. For parts not listed, consult N8MPN100J22B1, place of purchase. N8MPN No.
[ Replacement Models - N8MPNO50B12B1, NSMPNO75B12B1, N8MPN125J20B1, NSMPN125J22B1 Replacement part supplied Parts N8MPNO75F16B1, I - N8MPN (Natural Gas) NSMPN100F14B1, N8MPNIOOF2OB1, will be current active part. For parts not listed, consult N8MPNlOOJ22B1, place of purchase. N8MPN No.
[ Replacement Models - N8MPLO50B12B1, N8MPL125J22B1 Replacement N8MPLO75B12B1, part supplied Key No. will be current Description Functional Part Number Heat Exchanger Parts - N8MPL (Natural Gas) N8MPLO75F16B1, N8MPLIOOF2OB1, active part.
[ Replacement Models - N8MPLO50B12B1, NSMPLO75B12B1, N8MPL125J20B1, NSMPL125J22B1 Replacement part supplied Parts N8MPLO75F16B1, - N8MPL (Natural Gas) NSMPLIOOF2OB1, N8MPLIOOJ2OB1, will be current active part. For parts not listed, consult I N8MPL100J22B1, place of purchase. N8MPL Key No.
[ Replacement Models - N8MPLO50B12B1, NSMPLO75B12B1, N8MPL125J20B1, NSMPL125J22B1 Replacement part supplied Parts N8MPLO75F16B1, - N8MPL (Natural Gas) NSMPLIOOF2OB1, N8MPLIOOJ2OB1, will be current active part. For parts not listed, consult I N8MPL100J22B1, place of purchase. NSMPL No.
Parts for *8MPN/L BB 18 CC x 1 AA 17 Z 16 U 11 \ F 15 E G \ T 16 25-25-09a 441 01 2613 02
I Replacement Models - *SMPNO50B12B1, *SMPNO75B12B1, *SMPN125J20B1, *8MPN150J20B1 Replacement part supplied will be current Parts *8MPNO75F16B1, active part. I - *8MPN (Natural Gas) *SMPN100F14B1, *SMPNIOOF2OB1, For parts not listed, consult *8MPNIOOJ2OB1, place of purchase.
I Replacement Models - *8MPNO50B12B1, *8MPNO75B12B1, *8MPN125J20B1, *8MPN150J2OB1 Replacement part supplied Parts *8MPNO75F16B1, will be current active part. I - *8MPN (Natural Gas) *8MPN100F14B1, *8MPNIOOF2OB1, For parts not listed, consult *8MPNIOOJ2OB1, place of purchase.
I Replacement Models - *SMPN050B12B1, *SMPN075B12B1, *SMPN125J20B1, *8MPN150J20B1 Replacement part supplied will be current Parts *8MPN075F16B1, active part. I - *8MPN (Natural Gas) *SMPN100F14B1, *SMPN100F20B1, For parts not listed, consult *8MPN100J20B1, place of purchase.
I Replacement Models - *8MPLO5OB12B1, Replacement *8MPLO75B12B1, part supplied will be current Parts *8MPLO75F16B1, active part. - *8MPL (Natural Gas) *SMPLIOOF2OB1, *8MPLIOOJ For parts not listed, consult 20B1, I *8MPL125J20B1 place of purchase. *8MPL Key No.
I Replacement Models - *8MPL050B12B1, Replacement *8MPL075B12B1, part supplied will be current Parts *8MPL075F16B1, active part. - *8MPL (Natural Gas) *SMPL100F20B1, *8MPL100J For parts not listed, consult 20B1, I *8MPL125J20B1 place of purchase.
I Replacement Models - '8MPLO5OB12B1, Replacement '8MPLO75B12B1, part supplied will be current Parts "8MPLO75F16B1, active part. - 8MPL "SMPLIOOF2OB1, (Natural Gas) '8MPLIOOJ For parts not listed, consult 20B1, I "8MPL125J20B1 place of purchase. *8MPL Key No.