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31

ELECTRICAL SHOCK, FIRE OR EXPLOSION

HAZARD

Failure to follow this warning could result in personal

injury or death.
Before installing, modifying, or servicing system, main

electrical disconnect switch must be in the OFF position and

install a lockout tag.

There may be more than one

disconnect switch. Lock out and tag switch with a suitable

warning label. Verify proper operation after servicing.

!

WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this caution may result in improper

furnace operation or failure of furnace.
Label all wires prior to disconnection when servicing

controls. Wiring errors can cause improper and dangerous

operation.

CAUTION

!

INTRODUCTION

GENERAL

These instructions are written as if the furnace is installed in an
upflow application. An upflow furnace application is where the

blower is located below the combustion and controls section of

the furnace, and conditioned air is discharged upward. Since this
furnace can be installed in any of the 4 positions shown in Fig. 4,

you must revise your orientation to component location
accordingly.

ELECTRICAL CONTROLS AND WIRING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal

injury or death.
There may be more than one electrical supply to the

furnace. Check accessories and cooling unit for additional

electrical supplies that must be shut off during furnace

servicing. Lock out and tag switch with a suitable warning

label.

!

WARNING

The electrical ground and polarity for 115--v wiring must be
properly maintained. Refer to Fig. 24 for field wiring information

and to Fig. 38 for furnace wiring information.

NOTE

: If the polarity is not correct, the STATUS LED on the

control will flash rapidly RED and prevent the furnace from
heating. The control system also requires an earth ground for
proper operation of the control and flame--sensing electrode.
The 24--v circuit contains an automotive--type, 3--amp. fuse
located on the control. (See Fig. 38) Any shorts of the 24--v

wiring during installation, service, or maintenance will cause this

fuse to blow. If fuse replacement is required, use ONLY a 3--amp.
fuse. The control LED will display a three flash AMBER code

when fuse needs to be replaced.
Proper instrumentation is required to service electrical controls.

The control in this furnace is equipped with a multi--colored

Status Code LED (Light--Emitting Diode) to aid in installation,
servicing, and troubleshooting. The furnace control LED is either

ON continuously, rapid flashing, or displaying a flash code in one
of three colors (Red, Green, or Amber).
For an explanation of status codes, refer to service label located
on blower access door or Fig. 35 and the Service guide at the end

of this manual.
See Fig. 35 for a summary of fault codes and a brief explanation

of fault codes.
The stored status code will not be erased from the control
memory, if 115-- or 24--v power is interrupted.

1. To retrieve status code, proceed with the following:

NOTE

: NO thermostat signal may be present at control, and all

blower--OFF delays must be completed.

a. Remove outer access door.

b. Remove inner blower door.

c. Close blower door interlock switch.

d. Depress and hold SW1 button once (for less than 5

seconds).

2. When above items have been completed, the LED flashes

the fault code history (up to 5 fault codes from newest to

oldest). Record the status code(s) for further troubleshoot-
ing.

3. Check LED status. If no previous faults in the history,

control will rapidly flash the LED GREEN.

A180212

Fig. 35 -- Service Label

Summary of Contents for 58SU0A Series

Page 1: ...WALL VENTING 24 START UP ADJUSTMENT AND SAFETY CHECK 26 START UP PROCEDURES 26 ADJUSTMENTS 26 CHECK SAFETY CONTROLS 28 SERVICE AND MAINTENANCE PROCEDURES 31 ELECTRICAL CONTROLS AND WIRING 32 CARE AND MAINTENANCE 33 CLEANING AND OR REPLACING AIR FILTER 33 BLOWER MOTOR AND WHEEL 33 FLAME SENSOR CLEANING 34 CLEANING HEAT EXCHANGER 35 SEQUENCE OF OPERATION 36 FAULT CODE RECALL 37 CLEAR FAULT MEMORY 37...

Page 2: ...e space as specified in Air for Combustion and Ventilation section 4 Combustion products must be discharged outdoors Connect this furnace to an approved vent system only as specified in the Venting section of these instructions 5 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 as specified ...

Page 3: ...LY IN MM D BOTTOM INLET WIDTH IN MM VENT CONNEC TION IN MM SIZE SHIP WT LB KG ACCESSORY FILTER MEDIA CABINET SIZE IN MM 58SU0A040E17 12 17 1 2 445 15 7 8 403 11 9 16 294 16 406 4 102 118 54 16 406 58SU0A060E17 16 17 1 2 445 15 7 8 403 11 9 16 294 16 406 4 102 126 57 16 406 58SU0A080E21 20 21 533 19 3 8 492 13 5 16 338 19 1 2 495 4 102 140 64 20 508 58SU0A100E21 20 21 533 19 3 8 492 13 5 16 338 19 ...

Page 4: ...ing S Current edition of NFGC NFPA 54 ANSI Z223 1 Chapters 12 and 13 ELECTROSTATIC DISCHARGE ESD PRECAUTIONS PROCEDURE FURNACE RELIABILITY HAZARD Improper installation or service of furnace may cause premature furnace component failure Electrostatic discharge can affect electronic components Follow the Electrostatic Discharge Precautions Procedure listed below during furnace installation and servi...

Page 5: ...t component damage Corrosive or contaminated air may cause failure of parts containing flue gas which could leak into the living space Air for combustion must not be contaminated by halogen compounds which include fluoride chloride bromide and iodide These elements can corrode heat exchangers and shorten furnace life Air contaminants are found in aerosol sprays detergents bleaches cleaning solvent...

Page 6: ...Sq mm Round Duct In mm Dia Free Area of Open ing and Duct Sq In Sq mm Round Duct In mm Dia Free Area of Opening and Duct Sq In mm Round Duct In mm Dia 40 000 20 12904 5 127 14 8696 5 127 10 6452 4 102 60 000 30 19355 6 152 20 13043 5 127 15 9678 5 127 80 000 40 25807 7 178 27 17391 6 152 20 12904 5 127 100 000 50 32258 8 203 34 21739 7 178 25 16130 6 152 Not all input sizes are available EXAMPLE D...

Page 7: ...aces could create a NEGATIVE PRESSURE CONDITION at the furnace Make up air MUST be provided for the ventilation devices in addition to that required by the furnace Refer to Carbon Monoxide Poisoning Hazard warning in venting section of these instructions to determine if an adequate amount of make up air is available The requirements for combustion and ventilation air depend upon whether or not the...

Page 8: ...sed if the infiltration rate is known to be 1 Less than 0 40 ACH and 2 Equal to or greater than 0 10 ACH Infiltration rates greater than 0 60 ACH shall not be used The minimum required volume of the space varies with the number of ACH and shall be determined per Table 3 or Equations 1 and 2 Determine the minimum required volume for each appliance in the space and add the volumes together to get th...

Page 9: ...shipped with bottom closure panel installed in bottom return air opening This panel MUST be in place when only side return air is used NOTE Side return air openings can be used in UPFLOW and most HORIZONTAL configurations Do not use side return air openings in DOWNFLOW configuration Leveling Legs If Desired In upflow position with side return inlet s leveling legs may be used See Fig 10 Install fi...

Page 10: ...d on a Combustible Floor Table 4 Opening Dimensions In mm FURNACE CASING WIDTH APPLICATION PLENUM OPENING FLOOR OPENING A B C D 17 1 2 445 Upflow Applications on Combustible or Noncombustible Floor ing KGASB subbase not required 16 406 21 5 8 549 16 5 8 422 22 1 4 565 Downflow Applications on Noncombustible Flooring KGASB subbase not required 15 7 8 403 19 483 16 1 2 419 19 5 8 498 Downflow applic...

Page 11: ...stall bottom filler panel and screws Side Return Air Inlet Side Return Air Inlet These furnaces are shipped with bottom closure panel installed in bottom return air opening This panel MUST be in place when side return air inlet s is used without a bottom return air inlet FILTER ARRANGEMENT CARBON MONOXIDE AND POISONING HAZARD Failure to follow this warning could result in personal injury or death ...

Page 12: ...s Connect supply air duct to supply air outlet on furnace Bend flange inward past 90_ with wide duct pliers See Fig 14 The supply air duct must be connected to ONLY the furnace supply outlet or air conditioning coil casing when used When installed on combustible material supply air duct must be connected to ONLY the factory approved accessory subbase or a factory approved air conditioning coil cas...

Page 13: ...TICAL AGAINST THE FURNACE SIDES AND NOT PULL AWAY FROM THE FURNACE SIDES METHOD 1 FOLD ALL STRAPS UNDER FURNACE AND SECURE WTH 4 8 x 3 4 19 mm SHEET METAL SCREWS 2 SCREWS IN SIDE AND 2 SCREWS IN BOTTOM A10131 Fig 16 Horizontal Suspension with Straps A180240 Fig 17 Typical Attic Installation ...

Page 14: ...rnace gas control valve and extend a minimum of 2 in 51 mm outside the furnace WARNING Gas piping must be installed in accordance with national and local codes Refer to current edition of NFGC Installations must be made in accordance with all authorities having jurisdiction If possible the gas supply line should be a separate line running directly from meter to furnace NOTE In the state of Massach...

Page 15: ... 19 mm washable filter media such as contained in factory authorized accessory filter rack To determine airflow performance without this filter assume an additional 0 1 in W C available external static pressure 2 Adjust the blower speed tabs as necessary for the proper air temperature rise for each installation 3 If the same motor speed tap is needed for heating and cooling a Jumper Wire accessory...

Page 16: ...16 A02075 Fig 19 Upflow Return Air Configurations and Restrictions A02163 Fig 20 Downflow Return Air Configurations and Restrictions A180279 Fig 21 Horizontal Return Air Configurations and Restrictions ...

Page 17: ...is may consist of electrical wire conduit approved for electrical ground or a listed grounded power cord where permitted by local code when installed in accordance with existing electrical codes Refer to the power cord manufacturer s ratings for proper wire gauge Do not use gas piping as an electrical ground WARNING FURNACE MAY NOT OPERATE Failure to follow this caution may result in intermittent ...

Page 18: ... ground screw on J Box bracket 5 Connect line voltage leads as shown in Fig 24 6 Reinstall cover to J Box Do not pinch wires between cover and bracket BX CABLE INSTALLATION IN FURNACE J BOX 1 Remove cover from J Box 2 Route BX cable into 7 8 inch diameter hole in J Box 3 Secure BX cable to J Box bracket with connectors ap proved for the type of cable used 4 Secure field ground wire to green ground...

Page 19: ...R AND IGNITER 115 VAC NEUTRAL CONNECTOR ECM BLOWER 115VAC PRIMARY OF TRANSFORMER 115 VAC EAC 115 VAC WHEN USED FLAME SENSOR HUMIDIFIER 115 VAC WHEN USED NO CONNECTION AT GND PIN 8 J9 IS USED FOR GND GROUNDED AT BURNER BOX OR CASING COOL ON DELAY AND HEAT OFF DELAY JUMPER SHOWN IN FACTORY DEFAULT POSITION ECM BLOWER MOTOR SPEED OUTPUTS 24 VAC COOL HEAT FAN SPARE1 2 ARE FOR MOTOR TAPS NOT BEING USED...

Page 20: ... of National Fuel Gas Code ANSI Z223 1 NFPA 54 NFGC Parts 12 and 13 the local building codes and furnace and vent manufacturers instructions These furnaces are design certified as Category I furnaces in accordance with current edition of ANSI Z21 47 CSA 2 3 and operate with a non positive vent static pressure to minimize the potential for vent gas leakage Category I furnaces operate with a flue lo...

Page 21: ...0 6 0 NR NR 250 368 30 9 1 NR NR NR 404 Table 9 Minimum Allowable Input Rating of Space Heating Appliance in Thousands of BTUH per Hour VENT HEIGHT FT M INTERNAL AREA OF CHIMNEY IN2 MM2 12 7741 19 12258 28 18064 38 24516 Local 99 Winter Design Temperature 17 to 26_F 8 to 3_C 6 1 8 0 55 99 141 8 2 4 52 74 111 154 10 3 0 NR 90 125 169 15 4 6 NR NR 167 212 20 6 1 NR NR 212 258 30 9 1 NR NR NR 362 Loc...

Page 22: ...22 A180242 Fig 25 Chimney Inspection Chart ...

Page 23: ... of the number of vent connector elbows The vent connector can exit the furnace through one of two locations on the casing 1 Attach the single wall vent connector to the furnace vent elbow and fasten the vent connector to the vent elbow with at least two field supplied corrosion resistant sheet metal screws located 180_ apart NOTE An accessory flue extension is available to extend from the furnace...

Page 24: ...owing these figures A03213 Fig 28 Horizontal Left Application Vent Elbow Left SEE NOTES 1 2 4 5 6 7 8 9 on the page following these figures A03207 Fig 29 Downflow Application Vent Elbow Left then Up SEE NOTES 1 2 4 7 8 9 on the page following these figures A03214 Fig 30 Horizontal Right Application Vent Elbow Right SEE NOTES 1 2 4 5 7 8 9 on the page following these figures A03215 Fig 31 Horizonta...

Page 25: ...oper operation See Fig 24 3 Gas supply pressure to the furnace must be greater than 4 5 In W C 0 16 psig but not exceed 14 In W C 0 5 psig 4 Check all manual reset switches for continuity 5 Install blower compartment door Door must be in place to operate furnace 6 Replace outer door Start Up Procedures FIRE AND EXPLOSION HAZARD Failure to follow this warning could cause personal injury death and o...

Page 26: ...d to next step NOTE If orifice hole appears damaged or it is suspected to have been redrilled check orifice hole with a numbered drill bit of correct size Never redrill an orifice A burr free and properly sized orifice hole is essential for proper flame characteristics 5 Verify natural gas input rate by clocking meter NOTE Gas valve regulator adjustment cap must be in place for proper input to be ...

Page 27: ... wall 2 Connect an amp meter as shown in Fig 34 across the R and W subbase terminals or R and W wires at wall 3 Record amp draw across terminals when furnace is in heating and after blower starts 4 Set heat anticipator on thermostat per thermostat in structions and install on subbase or wall R Y W G 10 TURNS THERMOSTAT SUBBASE TERMINALS WITH THERMOSTAT REMOVED ANITICIPATOR CLOCK ETC MUST BE OUT OF...

Page 28: ...ools h Re install vent connector Table 11 Gas Rate Cu Ft Hr SECONDS FOR 1 REVOLUTION SIZE OF TEST DIAL SECONDS FOR 1 REVOLUTION SIZE OF TEST DIAL 1 Cu Ft 2 Cu Ft 5 Cu Ft 1 Cu Ft 2 Cu Ft 5 Cu Ft 10 360 720 1800 50 72 144 360 11 327 655 1636 51 71 141 355 12 300 600 1500 52 69 138 346 13 277 555 1385 53 68 136 340 14 257 514 1286 54 67 133 333 15 240 480 1200 55 65 131 327 16 225 450 1125 56 64 129 ...

Page 29: ...2 3 2 3 2 4 5000 925 2 1 2 1 2 2 2 3 1524 950 2 0 2 0 2 1 2 2 975 1 9 1 9 2 0 2 0 1000 1 8 1 8 1 9 1 9 Table 13 Gas Valve Outlet Pressure for Gas Heat Values at Altitude 60 000 Tabulated Data Based on 60 000 BTUH Input for 0 ft 0m to 5000 ft 1524 M above sea level ALTITUDE RANGE ft m AVG GAS HEAT VALUE AT ALTITUDE Btu cu ft SPECIFIC GRAVITY OF NATURAL GAS 0 58 0 60 0 62 0 64 Manifold Pressure in W...

Page 30: ...GRAVITY OF NATURAL GAS 0 58 0 60 0 62 0 64 Manifold Pressure in W C U S A 900 3 3 3 4 3 5 3 6 0 925 3 1 3 2 3 3 3 4 0 950 2 9 3 0 3 1 3 2 975 2 8 2 9 3 0 3 1 to 1000 2 6 2 7 2 8 2 9 1025 2 5 2 6 2 7 2 8 2000 1050 2 4 2 5 2 6 2 6 610 1075 2 3 2 4 2 4 2 5 1100 2 2 2 3 2 3 2 4 U S A 800 3 5 3 7 3 8 2 8 2001 825 3 3 3 4 3 6 3 7 611 850 3 1 3 2 3 3 3 5 875 3 0 3 1 3 2 3 3 to 900 2 8 2 9 3 0 3 1 925 2 6...

Page 31: ...s not correct the STATUS LED on the control will flash rapidly RED and prevent the furnace from heating The control system also requires an earth ground for proper operation of the control and flame sensing electrode The 24 v circuit contains an automotive type 3 amp fuse located on the control See Fig 38 Any shorts of the 24 v wiring during installation service or maintenance will cause this fuse...

Page 32: ...sary 4 Check electrical connections for tightness and controls for proper operation each heating season Service as necessary 5 Inspect the vent pipe vent system before each heating season for rust corrosion water leakage sagging pipes or broken fittings Have vent pipes vent system serviced by a qualified service agency 6 Inspect any accessories attached to the furnace such as a humidifier or elect...

Page 33: ...g plate Recommended operation is at the midpoint of the rise range or slightly above Refer to SET TEMPERATURE RISE under START UP ADJUSTMENT and SAFETY CHECK CAUTION NOTE Refer to Table 5 for motor speed lead relocation if leads were not identified before disconnection 14 Refer to furnace wiring diagram and connect thermostat leads if previously disconnected 15 To check blower for proper rotation ...

Page 34: ...g components Mark wires to aid in reconnection of be careful when discon necting wires from switches because damage may occur a Inducer motor b Transducer c Limit over temperature switch d Gas valve e Hot surface igniter f Flame sensing electrode g Burner thermal switch h DSS Draft Safeguard 5 Remove screws that fasten the inducer cover assembly to the cell panel Be careful not to damage the colle...

Page 35: ... mounting bracket screw Follow the sequence of operation through the different modes Read and follow the wiring diagram very carefully The blower door must be installed for power to be conducted through the blower door interlock switch ILK to the furnace control CPU transformer TRAN inducer motor IDM blower motor BLWM hot surface igniter HSI and gas valve GV Sequence of Operation Heating 1 Call fo...

Page 36: ...er will be energized to run on Fan speed Fault Code Recall 1 Function When the SW1 button is pressed momentarily the control displays the last five 5 fault codes recorded in non volatile memory upon demand 2 Operation The control must be powered and the thermostat satisfied no call for heat or cool Depress and release the SW1 button once less than 5 seconds the LED will flash the Fault Code Histor...

Page 37: ...37 A180211 Fig 38 Wiring Diagram ...

Page 38: ...rnace returns to normal operation Check Main limit Draft Safeguard Burner Thermal Switch are all in the Main Limit Circuit Check for any blockages in flue pipe or blower airside restrictions like dirty filter blocked inlet to burner or restriction in burner box that was pulled in through the air inlet 5 FLASHES RED Flame Present with Gas Valve OFF When detected the control energizes the inducer at...

Page 39: ...ing dealer or classified section of your local telephone directory under Heating Equipment or Air Conditioning Contractors and Systems headings for dealer listing by brand name or contact CARRIER CORPORATION Consumer Relations Department P O Box 4808 Syracuse New York 13221 4808 1 800 CARRIER Have available the model number series number and serial number located on the unit rating plate to ensure...

Page 40: ...orp S 7310 W Morris St S Indianapolis IN 46231 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 58SU0A 03SI Replaces 58SU0A 02SI Edition Date 09 19 ...

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