Kenmore N8MSL User Manual Download

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Summary of Contents for N8MSL

Page 1: ...IONS 20 115 V WIRING 20 J BOX RELOCATION 20 ELECTRICAL CONNECTION TO J BOX 20 ELECTRICAL DATA 21 24 V WIRING 22 ACCESSORIES 22 VENTING 23 GENERAL VENTING REQUIREMENTS 23 MASONRY CHIMNEY REQUIREMENTS 24 APPLIANCE APPLICATION REQUIREMENTS 26 ADDITIONAL VENTING REQUIREMENTS 26 SIDEWALL VENTING 27 START UP ADJUSTMENT AND SAFETY CHECK 30 GENERAL 30 START UP PROCEDURES 30 ADJUSTMENTS 31 SPEED SELECTION ...

Page 2: ... 81DEINLET BOTHSlDF m t 1 vz oj m_4 l 147 8 la_ a nOTH DES _A L11 4 1 Sl _ r_ NOTES 1 Two additional 7 8 in 22 mm diameter holes are located in the top plate 2 Minimum return air openings at furnace based on metal duct If flex duct is used see flex duct manufacturer s recommendations for equivalent diameters a For 800 CFM 16 in 406 mm round or 14 1 2 x 12 in 368 x 305 mm rectangle b For 1200 CFM 2...

Page 3: ...tallation adjustment alteration service maintenance or use can cause explosion fire electrical 15 1 16 383 23 584 4 102 170 77 Use a vent adapter between furnace and vent stack See Installation Instructions for complete shock or other conditions which may cause death personal injury or property damage Consult a qualified installer service agency or your distributor or branch for information or ass...

Page 4: ...rature limits may affect reliability of heat exchangers motors and controls See Figure 3 Figure 2 Clearances to Combustibles I INSTALLATION I Improper adjustment alteration service maintenance or installation can cause serious injury or death Read and follow instructions and arecautions in User s Information Manual erovided with this furnace Installation and service must be performed by a qualifie...

Page 5: ...rical Code NEC ANSI NFPA 70 2008 Step 8 Venting NFGC NFPA 54 ANSI Z223 1 2009 chapters 12 and 13 ELECTROSTATIC DISCHARGE ESD PRECAUTIONS PROCEDURE FURNACE RELIABILITY HAZARD Failure to follow this caution may result in furnace component damage Electrostatic discharge can affect electronic components Follow the Electrostatic Discharge Precautions Procedure listed below during furnace installation a...

Page 6: ...ions AIRFLOW THE BLOWER IS LOCATED TOTHE RIGHT OFTHE BURNER SECTION AND AiR CONDITIONED AIR IS DISCHARGEDTO THE LEFT THE BLOWER IS _7 LOCATED ABOVE THE BURNER SECTION AND CONDITIONEDAIR IS DISCHARGED DOWNWARD AIRFLOW THE BLOWER IS LOCATED BELOWTHE BURNER SECTION AND CONDITIONED AIR IS DISCHARGED UPWARD _ HORIZONTAL RIGH_AIRF L_C w THE BLOWER IS LOCATED TO THE LEFT OF THE BURNER SECTION AND CONDiTi...

Page 7: ...ce while the structure is under construction is deemed to be intermittent operation per our installation instructions The air temperature rise is within the rated rise range on the furnace rating plate and the gas input rate has been set to the nameplate value The filters used to clean the circulating air during the construction process must be either changed or thoroughly cleaned prior to occupan...

Page 8: ...R COMBUSTION AIR STANDARD or KNOWN AIR INFILTRATION METHOD Outdoor Combustion Air Method 1 Provide the space with sufficient air for proper combus tion ventilation and dilution of flue gases using per manent horizontal or vertical duct s or opening s dir ectly communicating with the outdoors or spaces that freely communicate with the outdoors The opening shall commence within 12 in 300 mm of the c...

Page 9: ... A03174 The Standard Method 1 The space has no less volume than 50 cu ft per 1 000 Btuh of the maximum input ratings for all gas appli ances installed in the space and 2 The air infiltration rate is not known to be less than 0 40 air changes per hour ACH The Known Air Infiltration Rate Method shall be used if the infiltration rate is known to be 1 Less than 0 40 ACH and 2 Equal to or greater than ...

Page 10: ...window anddoor frames between sole plates andfloors between wall ceil ing joints between wallpanels atpenetrations for plumbing electrical and gaslines etc Combination ofIndoor andOutdoor Air 1 Indoor openings shallcomply withtheIndoorCom bustion AirMethod below and 2 Outdoor openings shallbelocated asrequired inthe Outdoor Combustion Air Method mentioned previ ously and 3 Outdoor openings shall b...

Page 11: ...mbustible floor subbase Coil model number END4X or ENW4X Coil casing model number NAEA 1 Determine application being installed from Table 4 2 Construct hole in floor per Table 4 and Figure 11 3 Construct plenum to dimensions specified in Table 4 and Figure 11 4 If downflow subbase is used install as shown in Figure 12 If coil model numbers END4X ENW4X or coil casing model number NAEA is used insta...

Page 12: ... working platform at location where all required furnace clearances are met See Figure 2 and Figure 17 For furnaces with 1 in 25 mm clearance requirement on side set furnace on non combustible blocks bricks or angle iron For crawl space installations if the furnace is not suspended from the floor joists the ground underneath furnace must be level and the furnace set on blocks or bricks Roll Out Pr...

Page 13: ...ording to accepted national standards such as those published by Air Conditioning Contractors Association ACCA Sheet Metal and Air Conditioning Contractors National Association SMACNA or American Society of Heating Refrigerating and Air Conditioning Engineers ASHRAE or consult The Air Systems Design Guidelines reference tables available from your local distributor The duct system should be sized t...

Page 14: ...80 985 810 675 440 Bottom High 1980 1915 1835 1750 1655 1495 1365 1185 965 700 1102116A or Med Low 1745 1710 1650 1560 1450 1340 1205 1090 865 605 Side s Low 1530 1515 1470 1400 1310 1215 1095 990 830 670 High 2485 24t 5 2340 2255 2160 2060 1950 1840 1720 1565 Bottom Only Med Low 2135 2100 2060 2000 1930 1860 1765 1670 1555 1425 Low 1855 1840 1815 1775 1725 1675 1600 1510 1405 1290 Bottom Sides Hi...

Page 15: ... Unit Suspension A02020 4 6mm THREADED ROD 4 REQ OUTER DOOR ASSEMBLY c 8 203mm MtN FOR DOOR REMOVAL SECURE ANGLE IRON TO BOTTOM OF FURNACE WITH 3 8 x3 4 19mm SCREWS TYPICAL FOR 2 SUPPORTS 1 25ram SQUARE 1 1 4 x1 1 4 x1 8 32x32x3mm ANGLE IRON OR UNI STRUT MAY BE USED 2 HEX NUTS 2 WASHERS 2 LOCK WASHERS REQ PER ROD A10130 441 01 1402 02 15 ...

Page 16: ...CE AND SECURE WTH 4 8 x 3 4 t9 mm SHEET METAL SCREWS 2 SCREWS IN SiDE AND 2 SCREWS iN BOTTOM A10131 Figure 17 Typical Attic Installation LINE CONTACT ONLY PERMISSIBLE BETWEEN LINES FORMED BY INTERSECTIONS OF THE TOP AND TWO SIDES OF THE FURNACE JACKET AND BUILDING JOISTS STUDS OR FRAMING ENTRY EQUIPMENT MANUAL SHUT OFF GAS VALVE i TYPE B VENT 173 4 451 mm OVERALL 43 4 121mm UNDER DOOR 1 25mm UNDER...

Page 17: ...NNECTION 1 CONNECTION 2 CONNECTION 3 COMBINATIONS ONLY ONLY ONLY OF 1 2 AND 3 5 TONS AND YES NO NO NO GREATER ALL OTHER MODELS YES NO NO NO 2000 CFM AND GREATER AT 6 ESP HI COOLING SPEED Figure 20 Horizontal Return Air Configurations and Restrictions RETURN i AIR RETURN AIR _ SIDE RETURNAIR _ NOTPERMI_ED FOR 066 060 22 2O AIR FLOWMODELS II II II II I _lt_ _ SIDE RETURN AIR _M NOT PERM _ED FOR 066 ...

Page 18: ... could result in personal injury death and or property damage Never purge a gas line into a combustion chamber Never test for gas leaks with an open flame Use a commercially available soap solution made specifically for the detection of leaks to check all connections FIRE OR EXPLOSION HAZARD Failure to follow this warning could result in personal injury death and or property damage Use proper leng...

Page 19: ...d nipple should extend below level of furnace gas controls Place a ground joint union between furnace gas control valve and exterior manual equipment gas shutoff valve A 1 8 in 3 mm NPT plugged tapping accessible for test gauge connection MUST be installed immediately upstream of gas supply connection to furnace and downstream of manual equipment shutoff valve Piping should be pressure and leak te...

Page 20: ...status indicator light will flash a status code 10 and furnace wilt NOT operate J BOX RELOCATION NOTE If factory location of J Box is acceptable go to next section ELECTRICAL CONNECTION TO J BOX NOTE On 14 in 356 mm wide casing models the J Box shall not be relocated to other side of furnace casing when the vent pipe is routed within the casing 1 Remove and save two screws holding J Box See Figure...

Page 21: ...nit operates satisfactorily Unit ampacity 125 percent of largest operating component s full load amps plus 100 percent of all other potential operating components load amps Time delay type is recommended Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop MINIMUM WIRE GAUGE 14 14 14 14 14 14 14 12 14 14 12 14 12 12 EAC humidifier etc ...

Page 22: ... v connections at the 24 v terminal strip See Figure 25 Connect terminal Y as shown in Figure 26 for proper cooling operation Use only AWG No 18 color coded copper thermostat wire The 24 v circuit contains an automotive type 3 amp fuse located on the control Any direct shorts during installation service or maintenance could cause this fuse to blow If fuse replacement is required use ONLY a 3 amp f...

Page 23: ...s Code ANSI Z223 1 NFPA 54 and these instructions Determine that there is no blockage or restriction leakage corrosion and other deficiencies which could cause an unsafe condition 3 As far as practical close all building doors and windows and all doors between the space in which the appliance s connected to the venting system are located and other spaces of the building 4 Close fireplace dampers 5...

Page 24: ...an the maximum capacity given in Table 8 and 4 The input rating of each space heating appliance is greater than the minimum input rating given in Table 9 for the local 99 Winter Design Temperature Chim neys having internal areas greater than 38 in2 24516 mm 2 require furnace input ratings greater than the in put ratings of these furnaces See footnote at bottom of Table 9 and 5 The authority having...

Page 25: ...tile fuel oil residue debris Clay tile misalignment missing sections gaps Condensate Remove metal vent or liner Yes lined with properly sized listed liner or Yes Reline Part B of instructionsfor Remove mortar and tile debris Not Suitable Install chimney I adapter per instructions _lot Suitable 1 1 Line chimney with property sized listed flexible metal liner or Type B vent per NFGC Vent Sizing Tabl...

Page 26: ...uh per Hour VENT HEIGHT INTERNAL AREA OF CHIMNEY SQ IN SQ MM FT M 12 19 28 38 7741 12258 18064 24516 Local 99 Winter Design Temperature 17 to 26 degrees F 6 0 55 99 141 8 52 74 111 154 10 NR 90 125 169 15 NR NR 167 212 20 NR NR 212 258 30 NR NR NR 362 Local 99 Winter Design Temperature 5 to 16 degrees F 6 NR 78 121 166 8 NR 94 135 182 10 NR 111 149 198 15 NR NR 193 247 20 NR NR NR 293 30 NR NR NR ...

Page 27: ... portion of the furnace casing door Refer to the Vent Guard Kit Instructions for complete details The horizontal portion of the venting system shall slope upwards not tess than 1 4 in 6 mm per linear ft 21 mm m from the furnace to the vent and shall be rigidly supported every 5 ft 1 5 M or less with metal hangers or straps to ensure there is no movement after installation SIDEWALL VENTING This fur...

Page 28: ...ing these figures A03208 Figure 29 Upflow Application Vent Elbow Right j SEE NOTES 1 2 3 4 7 8 9 on the pages following these figures A03209 SEE NOTES 1 2 3 4 5 7 8 9 on the page following these figures A03210 Figure 31 Downflow Application Vent Elbow Up SEE NOTES 1 2 4 5 7 8 9 on the page following these figures A03211 28 441 01 1402 02 ...

Page 29: ...page following these figures A03213 Figure 35 Horizontal Left Application Vent Elbow Ric SEE NOTES 1 2 4 5 7 8 9 on the page following these figures A032t 4 Figure 36 Horizontal Left Application Vent Elbow Up o _ SEE NOTES 1 2 4 5 7 8 9 on the page following these figures A03215 Figure 37 Horizontal Left Application Vent Elbow Right 11 S SEE NOTES 1 2 4 5 7 8 9 on the page following these figures ...

Page 30: ...imney Adapter Kit may be required for exterior masonry chimney applications Refer to Chimney Adapter Kit for sizing and complete applicationdetails 8 Securevent connectorto furnace elbowwith 2 corrosion res istantsheet metal screws spaced approximately 180 apart 9 Secure all other single wall vent connectorjoints with 3 corro sion resistant screwsspaced approximately 120 apart Secure Type B vent c...

Page 31: ...0 000 36 40 0 62 2743 3048 Derate multiplier factors are based on midpoint altitude for altitude ran e FIRE HAZARD Failure to follow this warning could result in injury death and or property damage DO NOT bottom out gas valve regulator adjusting screw This can result in unregulated manifold pressure and result in excess overfire and heat exchanger failures FURNACE DAMAGE HAZARD Failure to follow t...

Page 32: ...gulator seat cap on gas valve 5 Set temperature rise The furnace must operate within the temperature rise ranges specified on the furnace rating plate Do not exceed temperature rise range specified on unit rating plate Determine the temperat ure rise as follows NOTE Blower access door must be installed when taking temperature rise reading Leaving blower access door off will result in incorrect tem...

Page 33: ...ins used for the selected heat off delay Factory heat off delay setting is 120 sec 8 Set airflow CFM for cooling Select the desired blower motor speed lead for cooling airflow See Table 5 Air Delivery CFM With Filter See Table 12 for lead color identification Figure 41 Gas Control Valve A06666 Figure 42 Orifice Hole A93059 Figure 43 Amp Draw Check With Ammeter SUBBASE TERMINALS WITH THERMOSTAT REM...

Page 34: ...ec and flash status code 1 2 before beginning the call for heat again i Furnace should ignite normally Step 5 Checklist 1 Put away tools and instruments Clean up debris 2 Verify that heat off delay time is selected as desired 3 Verify that blower and burner access doors are prop erly installed 4 Cycle test furnace with room thermostat 5 Check operation of accessories per manufacturer s in structio...

Page 35: ...e 42 3 5 42 3 6 42 3 7 42 3 3 42 3 4 42 3 5 43 3 8 42 3 3 42 3 4 43 3 6 43 3 8 42 3 2 43 3 5 43 3 6 43 3 7 43 3 3 43 3 4 43 3 5 44 3 6 43 3 2 43 3 4 44 3 4 44 3 5 43 3 2 44 3 3 44 3 4 44 3 5 42 3 4 42 3 5 42 3 6 42 3 2 42 3 3 42 3 4 43 3 7 43 3 8 42 3 2 43 3 5 43 3 6 43 3 7 43 3 3 43 3 4 43 3 5 43 3 1 43 3 2 43 3 3 43 2 9 43 3 0 43 3 1 43 2 8 43 2 9 43 3 0 43 2 6 43 2 7 43 2 8 42 3 2 42 3 3 42 3 4...

Page 36: ...1 43 3 2 43 3 4 43 3 5 675 43 2 9 43 3 0 43 3 1 43 3 2 700 43 2 7 43 2 8 43 2 9 43 3 0 725 43 2 5 43 2 6 43 2 7 43 2 8 750 43 2 4 43 2 4 43 2 5 43 2 6 775 43 2 2 43 2 3 43 2 4 43 2 4 800 43 2 1 43 2 1 43 2 2 43 2 3 825 48 3 7 43 2 0 43 2 1 43 2 2 625 43 2 9 43 3 0 43 3 1 43 3 2 650 43 2 7 43 2 8 43 2 9 43 3 0 675 43 2 5 43 2 6 43 2 7 43 2 8 700 43 2 3 43 2 4 43 2 5 43 2 6 725 43 2 2 43 2 2 43 2 3 ...

Page 37: ...43 3 2 43 3 3 43 3 4 43 3 5 900 43 3 0 43 3 1 43 3 2 43 3 3 925 43 2 8 43 2 9 43 3 0 43 3 1 950 43 2 7 43 2 8 43 2 9 43 2 9 975 43 2 5 43 2 6 43 2 7 43 2 8 1000 43 2 4 43 2 5 43 2 6 43 2 7 775 43 3 5 43 3 7 43 3 8 42 3 2 800 43 3 3 43 3 4 43 3 5 43 3 7 825 43 3 1 43 3 2 43 3 3 43 3 4 850 43 2 9 43 3 0 43 3 1 43 3 2 875 43 2 8 43 2 9 43 3 0 43 3 1 900 43 2 6 43 2 7 43 2 8 43 2 9 925 43 2 5 43 2 6 4...

Page 38: ...stion air supply Disconnectedor obstructedpressuretubing Low inlet gas pressure if LGPSused Restrictedvent If it opensduring blower on delay period blower will come onfor the selected blower off delay 4 LIMIT CIRCUITFAULT Indicates a limit draft safeguard flame rollout or blocked vent switch if used is open Blowerwillrun for 4 minutesor until open switchremakes whichever is longer If open longer t...

Page 39: ... supply to the furnace Check accessories and cooling unit for additional electrical supplies that must be shut off during furnace servicing Lockout and tag switch with a suitable warning label Verify proper operation after servicing The electrical ground and polarity for 115 v wiring must be properly maintained Refer to Figure 26 for field wiring information and Figure 48 for furnace wiring inform...

Page 40: ...he furnace such as a humidifier or electronic air cleaner Perform any service or maintenance to the accessories as recommended in the accessory instructions CLEANING AND OR REPLACING AIR FILTER The air filter arrangement will vary depending on the application The filter is exterior to the furnace casing NOTE If the filter has an airflow direction arrow the arrow must point towards the blower CUT H...

Page 41: ...Remove any jumpers or re connect any disconnected thermostat leads Replace blower access door 17 Downflow or horizontal furnaces with vent pipe through furnace only a Install and connect short piece of vent pipe inside furnace to existing vent b Connect vent connector to vent elbow 18 Reinstall casing door 19 Turn on gas supply and cycle furnace through one complete heating and cooling cycle Verif...

Page 42: ...lector box flange 11 Spray releasing agent on the heat exchanger cell panel where collector box assembly contacts cell panel NOTE A releasing agent such as a vegetable oil cooking spray that does not contain corn oil canola oil halogenated hydrocarbons or aromatic content which may prevent an inadequate seat from occuring and RTV sealant such as G E RTV 162 G E RTV 6702 or Dow Corning RTV 738 seal...

Page 43: ...or is energized on HEAT speed 25 sec after the gas valve GV is energized Simultaneously the electronic air cleaner terminal EAC 1 AMP is energized and remains energized as long as the blower motor BLWM is energized f Heat Off Delay When the thermostat is satisfied the R to W circuit is opened de energizing the gas valve GV stopping gas flow to the burners and de energizing the 24 v humidifier term...

Page 44: ...T TWIN TERMINAL TRANSFORMER 115VAC 24VAC JUNCTION UNMARKED TERMINAL PCS CONTROL TERMINAL FACTORY WIRING 115VAC FACTORY WIRING 24VAC FIELD WIRING 115VAC FIELD WIRING 24VAC CONDUCTOR ON CONTROL PCB FIELD WIRING SCREW TERMINAL FIELD EARTH GROUND EQUIPMENT GROUND FIELD SPLICE PLUG RECEPTACLE SCHEMATIC DIAGRAM TO 115 VAC FIELD DISCONNECT SWITCH _ L1 I NEUTRALI 2 _ E _PMENT NATURAL PROPANEGASES _ I SP l...

Page 45: ...ll repeat 4 times then go on to component test If no previous code is present a component test will begin without flashing any status codes Component Test Sequence Gas valve and humidifier will not be turned on Inducer motor will start and remain on until the end of the blower test then off The following components are on for 10 15 seconds each individually hot surface igniter blower speeds FAN if...

Page 46: ...reset Turn off power and wait 5 minutes to retry Check for Stuck closed gas valve relay on control Miswire or short to gas valve wire POLARITY Check for correct line voltage polarity If units are twinned check for proper low voltage 24V transformer phasing 1 2 BLOWER ON AFTER POWER UP 115V OR 24V Normal operation Blower runs for 90 seconds if unit is powered up during a call for heat R W W1 closed...

Page 47: ...32 000 BTU hr 155 154 000 BTU hr 14 14 3 16 17 17 1 2 21 21 24 24 1 2 08 800 CFM max 12 1200 CFM max 14 1400 CFM max 16 1600 CFM max 20 2000 CFM max 22 2200 CFM max SALES MAJOR REVISION DIGIT ENGINEERING MINOR REVISION DIGIT TYPE FEATURE HEAT INPUT CABINET WIDTH NOMINAL MAXIMUM COOLING AIRFLOW 5 IN W C TO OBTAIN INFORMATION ON PARTS Consult your installing dealer or the classified section of your ...

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