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58MEC
DELUXE 4---WAY MULTIPOISE 2---STAGE
CONDENSINGGAS FURNACE
SIZES060TO120
ServiceandMaintenanceInstructions
NOTE: Read the entire instruction manual before starting the
SAFETYCONSIDERATIONS
installation.
Recognize safety information. This is the safety--alert symbol .
When you see this symbol on the furnace and in instructions or
manuals, bealertto thepotentialforpersonalinjury.
TABLEOFCONTENTS
Understand the signal words DANGER, WARNING, and
PAGE
CAUTION. These words are used with the safet
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Installing and servicing heating equipmentcan behazardousdueto gas and electrical components. Only trained and qualified service agency personnel should install, repair, or service heating equipment. Untrained personnel can perform basic maintenance functions described in User’s Information Manual such as cleaning and replacing air filters. All other operations must be performed by trained service personnel. When working on heating equipment, observe precautions in the literature, on tags, and o
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1. Disconnect all power to the furnace. DO NOT TOUCH Step1—Cleaningand/orReplacingAirFilter THECONTROL ORANY WIRECONNECTED TOTHE The air filter arrangement may vary depending on the application CONTROL PRIOR TO DISCHARGING YOUR BODY’S or orientation. See Tables 1 and 2 for filter size and type ELECTROSTATIC CHARGE TO GROUND. information. 2. Firmly touch a clean, unpainted, metal surface of the fur- nace chassis which is close to the control. Tools held in a ! person’s hand during grounding will
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Table1–FurnaceAirFilterTable FILTERQUANTITYANDSIZE* FURNACECASINGWIDTH FILTERTYPE SIDERETURN{* BOTTOMRETURN* IN(MM) IN(MM)* IN(MM) IN(MM) (1)16x 25x 3/4 { (1)16x 25x 3/4 17---1/2(445) 3/4(19mm)thickwashable (406x 635x 19) { (406x 635x 19) (1)16x 25x 3/4 (1)20x 25x 3/4 { 21(533) 3/4(19mm)thickwashable (406x 635x 19) (508x 635x 19) { (1)16x 25x 3/4 (1)24x 25x 3/4 { 24---1/2(610) 3/4(19mm)thickwashable (406x 635x 19) (610x 635x 19) { Table2–AirFilterLocatedinFilterCabinet FILTERCABINETHEIGHT --- IN
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(1.) Connect1 tube(blueorblueand whitestriped) from collectorbox. (2.) Connect1 tube(violetorunmarked)from inducer housing. PLUG (3.) Connect1 tube(reliefport, green orpink)from CAP collectorbox. COLLECTOR BOX NOTE: Ensure tubes are notkinked orpinched, asthis willaffect DRAIN TUBE (BLUE operation. & WHITE STRIPED) c. Connectfield drain to condensatetrap. COLLECTOR BOX TUBE (PINK) 13. Reconnectwires. Refer to furnace wiring diagram and connect thermostat leads if previously disconnected. (SeeFig
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! CAUTION UNITDAMAGEHAZARD Failure to follow this caution may result in damage to furnace. Labelallwirespriorto disconnection when servicingcontrols. Wiring errorscan causeimproperand dangerousoperation. 5. Removewiresfromgasvalve. Notelocation forreassembly. 6. Remove burner box pressure tube from gas valve regulator fitting. 7. Unplug igniterfrom harness. 8. Remove igniter leads from slot in manifold grommet. 9. Remove screws that secure manifold to burner box. (See Fig. 6.) NOTE: Do notremove
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21. Check for gas leaks. 9. Remove 2 screws attaching top filler panel and rotate up- wards to gain access to screws attaching burner box to cell 22. Replacemain furnacedoor. panel. Step4—CleaningHeatExchangers 10. Removescrewsattaching burnerboxto cellpanel. (SeeFig. The following items should be performed by a qualified service 6). technician. NOTE: Burner box, cover, manifold, gas valve, and burner PRIMARYHEATEXCHANGERS assembly should beremoved asoneassembly. If the heat exchangers get an ac
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inducer assembly. See Flushing Collector Box and Drainage inducerhousing. Apply asmallbead ofG.E. RTV 162, G.E. RTV System section fordetailson removing inducerassembly. 6702, or Dow--Corning RTV 738 sealant to groove in collector box. (SeeFig. 12.) Step5—FlushingCollectorBoxandDrainage 11. Refer to furnace wiring diagram and reconnect wires to in- System ducermotorand pressureswitchesorconnectors. 1. Turn off gas and electrical supplies to furnace. 12. Reconnect pressure tubes to pressure switc
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TUBE ROUTING Furnace is shipped from factory in upflow configuration. Pressure tube and drain tube routing MUST match the diagrams below. Condensate Trap on LEFT Condensate Trap; Factory Installed Tube location when used in UPFLOW application Side Optional in Blower Shelf BURNER ENCLOSURE BURNER ENCLOSURE (Blower access panel removed) PRESSURE REFERENCE PRESSURE REFERENCE TUBE ASSEMBLY TUBE ASSEMBLY CAP CAP COLLECTOR BOX TUBE (PINK) PLUG PLUG COLLECTOR BOX TUBE COLLECTOR BOX TUBE (PINK) COLLECTO
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BURNER FLAME ! CAUTION BURNER BURNHAZARD Failure to follow this caution may result in personal injury. Allow igniter to cool before removal. Normal operating temperatures exceed 2000°F (1093°C). a. Removeburnerbox cover. b. Remove igniter wires from slot in manifold grommet. (SeeFig. 7.) c. Using a1/4 in. driver, removethesinglescrew securing theigniterbracketto theburnerbox bracket(SeeFig. MANIFOLD 13.)and carefully withdraw theigniterand bracketas- A89020 sembly through thefrontofthebur
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! CAUTION UNITANDPROPERTYDAMAGEHAZARD Failureto follow thiscautionmay resultin furnacecomponent orproperty damage. If this furnace is to be operated in an unconditioned space where the ambient temperatures may be 32_F(0_C) or lower, freeze protection measures must be taken. (See Fig. 18). See CONDENSATE DRAIN PROTECTION section of Installation, Start--up, and Operating Instructions. A05075 Fig.13 -- IgniterBracket Step8—CheckingHeatTapeOperation(If Applicable) In applications where the ambient t
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FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-V WIRING 1-STAGE THERMOSTAT TERMINALS WY RG C FIVE FIELD-SUPPLIED WIRE FUSED DISCONNECT TWO-WIRE 208/230- OR HEATING- 460-V ONLY THREE PHASE W2 BLK BLK GND GND COM WHT WHT W/W1 208/230-V GND SINGLE GND Y/Y2 PHASE 115-V FUSED JUNCTION DISCONNECT BOX GND R GND SWITCH CONTROL CONDENSING (WHEN REQUIRED) G BOX UNIT 24-V TERMINAL BLOCK NOTES: 1. Connect Y-terminal as shown for
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IHI/LOR IDM HSIR 1 PL2 IDR PL1 1 1 2 3 PLT ON OFF 24V MTR TAPS L2 W2 Y DHUM G COM W/W1 Y/Y2 R 24V SET UP SWITCHES LOW HEAT ONLY TWINNING AND/OR ACRDJ - AIR CONDITIONING AND BLOWER COMPONENT TEST RELAY DISABLE JUMPER OFF-DELAY TERMINAL LHT OFF DLY 24-V THERMOSTAT TERMINALS HUMIDIFIER TERMINAL TEST / TWIN (24 VAC 0.5 AMPS MAX) HUM TRANSFORMER 24 VAC CONNECTIONS FUSE 3-AMP PL1-LOW VOLTAGE MAIN HARNESS CONNECTOR 3-AMP FUSE SEC-2 SEC-1 LED OPERATION COM 2
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A99118 A99119 Fig.19 -- Inducer Housing Drain Tube Cap Fig.20 -- Funnel in Drain Tube and Antifreeze Running Through Trap Record the code and repeat the disconnect and reconnect of the red 1. Remove blower accessdoor. wire, recording each code until code 11 is displayed indicating no 2. Disconnect thermostat R lead from furnace control. additional codes. Afterthe lastcode isdisplayed orafter 2 minutes 3. Manually closeblowerdoorswitch. in the code recall mode the control will return to normal st
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SERVICE If status code recall is needed, briefly remove then reconnect one main limit wire to display last stored status code. Repeat remove-and-reconnect four more times for previous four status codes, after which the five codes repeat. Status code 11 will display when less than four previous status codes exist. On RED LED controls do not remove power or blower door before initiating status code recall. LED CODE STATUS CONTINUOUS OFF - Check for 115VAC at L1 & L2, & 24VAC at SEC-1 & SEC-
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A08343 Fig.22 -- WiringDiagram 16 58MEC
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A05095 17 TROUBLESHOOTING GUIDE — TWO-STAGE START NO NO NO Is LED status light on? Is there 115V at L1 and L2? Is door switch closed? Close door switch and go back to START. YES YES YES NO NO NO Is there 24V at SEC-1 and SEC-2? Is there 115V going to switch? Is circuit breaker closed? YES YES YES Replace furnace control. Replace door switch. Check for continuity in wire from circuit breaker to furnace. Replace transformer. Close circuit breaker and go back to START . Check for correct line volta
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A05095 Copyright 2009 CarrierCorp. S 7310 W. MorrisSt. S Indianapolis, IN 46231 Printed inU.S.A. EditionDate:09/09 CatalogNo:58MEC---01SM Manufacturer reserves therighttochange,atanytime,specifications anddesigns withoutnoticeandwithoutobligations. Replaces:NEW 18 11 NO PREVIOUS CODE – Stored codes 32 LOW-HEAT PRESSURE SWITCH DID 43 LOW-HEAT PRESSURE SWITCH OPEN 45 CONTROL CIRCUITRY LOCKOUT Auto- are erased after 72 hours. On RED LED NOT CLOSE OR REOPENED – If open WHILE HIGH-HEAT PRESSURE rese
