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UNITSIZEVOLTS—HERTZ—PHASEOPERATINGVOLTAGE RANGEMax* Min*Table 4—Electrical DataMAXUNITAMPSUNITAMPACITY†MINWIRESIZEMAX WIRELENGTH(FT)‡MAX FUSEOR CKT BKRAMPS**040-08 115—60—1 127 104 6.1 8.4 14 44 15040-12 115—60—1 127 104 7.3 10.0 14 37 15060-08 115—60—1 127 104 6.1 8.4 14 44 15060-12 115—60—1 127 104 7.1 9.8 14 38 15060-16 115—60—1 127 104 9.5 12.8 14 29 15080-12 115—60—1 127 104 7.6 10.4 14 36 15080-16 115—60—1 127 104 10.0 13.4 14 28 15080-20 115—60—1 127 104 14.1 18.4 12 31 20100-16 115—60—1 127 104 10.2 13.5 14 27 15100-20 115—60—1 127 104 14.8 19.3 12 30 20120-20 115—60—1 127 104 14.6 19.1 12 30 20140-20 115—60—1 127 104 14.3 18.8 12 30 20* Permissible limits of voltage range at which unit will operate satisfactorily.† Unit ampacity = 125 percent of largest operating component’s full load amps plus 100 percent of all other potential operating components’ (EAC, humidifier, etc.) fullload amps.‡ Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.** Time-delay type is recommended.BLOWER OFF-DELAYTWINNING AND/ORCOMPONENT TESTTERMINALJ2 JUMPERBLOWER OFF-DELAYJ290 150120 180HUMIDIFIER TERMINAL(24-VAC 0.5 AMP MAX.)24-V THERMOSTATTERMINALSG Com W Y R24VTEST/TWINHUMPLTTRANSFORMER 24-VACCONNECTIONS3-AMP FUSELED OPERATION &DIAGNOSTIC LIGHT115-VAC(L2)NEUTRALCONNECTIONSNUETRAL BLWSTATUS CODE LEDFUSE 3-AMPSEC-2 SEC-1EAC-20.5 AMP@24VACL2PLT 1PL1-LOW VOLTAGE MAINHARNESS CONNECTORCOOLHEATCOOL HEAT1-AMP@SPARE-1 SPARE-2EAC-1 115VACPR-1L1PL2 1SPARE-1SPARE-2BLOWER SPEEDSELECTION TERMINALS115 VAC (L1) LINEVOLTAGE CONNECTIONEAC-1 TERMINAL(115-VAC 1.0 AMP MAX.)PL2-HOT SURFACEIGNITER & INDUCERMOTOR CONNECTORFig. 31—Control BoardA0210022Downloaded from www.Manualslib.com manuals search engine
→Step 1—Removal of Existing Furnaces fromCommon Vent SystemsWhen an existing Category I furnace is removed or replaced, theoriginal venting system may no longer be sized to properly ventthe remaining attached appliances. An improperly sized CategoryI venting system could cause the formation of condensate in thefurnace and vent, leakage of condensate and combustion products,spillage of combustion products into the living space, etc.CARBON MONOXIDE POISONING HAZARDFailure to follow the steps outlined below for each applianceconnected to the venting system being placed into operationcould result in carbon monoxide poisoning or death.The following steps shall be followed for each applianceconnected to the venting system being placed into operation,while all other appliances connected to the venting system arenot in operation:1. Seal any unused openings in venting system.2. Inspect the venting system for proper size and horizontalpitch, as required in the National Fuel Gas Code, ANSIZ223.1/NFPA 54 or the CSA B149.1, Natural Gas andPropane Installation Code and these instructions. Determinethat there is no blockage or restriction, leakage,corrosion and other deficiencies, which could cause anunsafe condition.3. As far as practical, close all building doors and windowsand all doors between the space in which the appliance(s)connected to the venting system are located and otherspaces of the building.4. Close fireplace dampers.5. Turn on clothes dryers and any appliance not connected tothe venting system. Turn on any exhaust fans, such asrange hoods and bathroom exhausts, so they are operatingat maximum speed. Do not operate a summer exhaust fan.6. Follow the lighting instructions. Place the appliance beinginspected into operation. Adjust the thermostat so applianceis operating continuously.7. Test for spillage from draft hood equipped appliances at thedraft hood relief opening after 5 minutes of main burneroperation. Use the flame of a match or candle.8. If improper venting is observed during any of the abovetests, the venting system must be corrected in accordancewith the National Fuel Gas Code, ANSI Z223.1/NFPA 54and/or CSA B149.1, Natural Gas and Propane InstallationCode.9. After it has been determined that each appliance connectedto the venting system properly vents when tested asoutlined above, return doors, windows, exhaust fans,fireplace dampers and any other gas-fired burning applianceto their previous conditions of use.Vent system or vent connectors may need to be resized. For anyother appliances when resizing vent systems or vent connectors,system or connector must be sized to approach minimum size asdetermined using appropriate table found in the NFGC or NSC-NGPIC.→In Canada, construct all combustion-air and vent pipes for this unitof CSA or ULC listed schedule-40 PVC, PVC-DWV or ABS-DWV pipe and pipe cement. SDR pipe is NOT approved inCanada.See Table 7 for maximum pipe lengths and Fig. 36, 37, 38, 39, and40 for exterior piping arrangements.NOTE: Furnace combustion-air and vent pipe connections aresized for 2-in. pipe. Any pipe size change should be made outsidefurnace casing in vertical pipe. (See Fig. 32.) This allows properdrainage of vent condensate.Combustion-air and vent pipes must terminate together in sameatmospheric pressure zone, either through roof or sidewall (rooftermination preferred), using accessory termination kit. See Table5 for required clearances.Table 5—Combustion-Air and Vent PipeTermination ClearancesLOCATIONCLEARANCE (FT)U.S.A. CanadaAbove grade level or above anticipatedsnow depth1 1†Dryer/Water heater vent See Note 5 See Note 5From plumbing vent stack 3 3From any mechanical fresh air intake See Note 4 See Note 6For furnaces with an input capacityless than 100,000 Btuh—from any nonmechanicalair supply (windows or 1 1doors which can be opened) orcombustion-air openingFor furnaces with an input capacitygreater than 100,000 Btuh–from anynon-mechanical air supply (windows 1 3or doors which can be opened) orcombustion-air openingFrom service regulator vent, electricand gas meters, and relief equipmentSee Note 6 See Note 6Above grade when adjacent to publicwalkwaySee Note 3 See Note 3† 18 in. above roof surface in Canada.NOTES: 1. If installing 2 adjacent Furnaces, refer to Multiventing and VentTerminations section for proper vent configurations.2. When locating combustion-air and vent terminations, consideration must begiven to prevailing winds, location, and other conditions which may causerecirculation of the appliance’s own flue products or the flue products ofadjacent vents. Recirculation can cause poor combustion, inlet condensateproblems, and accelerated corrosion of heat exchangers.3. Vent termination can not terminate less than 2 ft horizontal and 7 ft abovepublic walkway or where condensate vapor or droplets may be a hazard.4. Vent termination must be at least 3 feet above any forced draft inlets within10 feet horizontal. Vent termination must be at least 3 feet horizontal fromother direct vent appliances intake unless otherwise specified by manufacturer.5. 3 ft radius of furnace air-intake terminal and 1 ft horizontally from verticalcenterline of furnace air-intake terminal.6. Above a meter/regulator within 3 feet horizontally of vertical centerline ofmeter/regulator vent outlet to a maximum vertical distance of 15 ft.Furnace combustion-air and vent pipe connections must be attachedas shown in Fig. 33. Combustion-air intake plug fitting andinducer housing alternate vent cap may need to be relocated insome applications.NOTE: Slope combustion-air and vent pipes a minimum of 1/4in. per linear ft with no sags between hangers.Step 2—Combustion-Air and Vent PipingGENERALCombustion-air and vent pipe, fittings, primers, and solvents mustconform to American National Standards Institute (ANSI) standardsand American Society for Testing and Materials (ASTM)standards. See Table 6 for approved materials for use in the U.S.A.Downloaded from www.Manualslib.com manuals search engine23When combustion-air pipe is installed above a suspendedceiling, pipe must be insulated with 3/8-in. thick Armaflextypeinsulation. Combustion-air pipe should also be insulatedwhen it passes through warm, humid space.
Page 1 and 2: Visit www.carrier.com58MCA4-Way Mul
Page 3 and 4: SAFETY CONSIDERATIONSApplication of
Page 5 and 6: BLOWER SHELFCONDENSATETRAP (INSIDE)
Page 7 and 8: →NOTE: Failure to use CPVC elbows
Page 9 and 10: PLUGCAPAUXILIARY "J" BOXCOLLECTOR B
Page 11 and 12: COMBUSTION - AIRINTAKEVENT5 3 ⁄ 4
Page 13 and 14: This gas furnace may be used for co
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Page 17 and 18: →supply/outlet or air conditionin
Page 19 and 20: →→→FIRE OR EXPLOSION HAZARDFa
Page 21: SCHEMATIC DIAGRAM(NATURAL GAS & PRO
Page 25 and 26: 12″ MIN12″ MINVENT PIPEVENT PIP
Page 27 and 28: Table 7—Maximum Allowable Pipe Le
Page 29 and 30: ALTITUDE (FT)8001 to 9000‡ALTITUD
Page 31 and 32: ROOF18″ MAXIMUMBRACKETVERTICAL SE
Page 33 and 34: AA96128Fig. 41—Rooftop Terminatio
Page 35 and 36: →→The thermostat closes the R-t
Page 37 and 38: e. Find closest natural gas heat va
Page 39 and 40: U.S.A. OnlyU.S.A. OnlyU.S.A. OnlyTa
Page 41 and 42: U.S.A. and CanadaU.S.A. and CanadaU
Page 43 and 44: BURNERORIFICETable 11—Altitude De
Page 45 and 46: LOAD CALCULATION____________ Heatin
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