Carrier 58TUA Installation, Start-up, And Operating Instructions Manual

Also see for 58TUA: Service and maintenance instructions User's information manual User's information manual Installation, start-up, and operating instructions Installation, start-up, and operating instructions

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Carrier 58TUA Installation, Start-up, And Operating Instructions Manual Manual pdf 13 page image

4. With furnace operating, set thermostat below room tempera-ture and observe that furnace goes off. Set thermostat aboveroom temperature and observe that furnace restarts.ADJUSTMENTS1. Set gas input rate.The gas input rate must be set for both high fire and low fire.Each adjustment is made independently at the gas controlregulators.There are 2 methods of adjusting the gas input rate. Thepreferred method is by using Table 8 and following instruc-tions in item a. The second method is by clocking the gasmeter and following instructions in item b.The procedure in item b. MUST be used for altitudes above2000 ft.The gas valve regulator has been nominally set at 1.5-in. wcfor low fire and 3.5-in. wc for high fire for natural gas.a. Check gas input rate using Table 8.(1.) Obtain average yearly heat value for local gas supply.(2.) Obtain average yearly specific gravity for local gassupply.(3.) Verify furnace model. Table 8 can only be used formodel 58TUA Furnaces.(4.) Check and verify orifice size in furnace. NEVERASSUME THE ORIFICE SIZE. ALWAYS CHECKAND VERIFY.(5.) Find natural gas heat value and specific gravity inTable 8.(6.) Follow heat value and specific gravity lines to point ofintersection. Find orifice size and manifold pressuresettings for proper operation at given natural gasconditions on low and high fire.Fig. 12—Unit Wiring DiagramA94232FUSED DISCONNECTSWITCH (WHEN REQ'D)NOTE #1JBWHTBLKGRNGRNFU2COMPONENT TESTTo initiate the component test sequence with no thermostat inputs and with all inducer Post-Purge andBlower-Off Delay periods completed, short the 'TWIN/TEST' terminal to the 'COM' terminal for about twoseconds. The control will turn ON the inducer motor Low-Speed, inducer motor High-Speed, HSI,blower motor Low-Gas-Heat Speed, blower motor High-Gas-Heat Speed, and blower motor High-CoolSpeed for 7-15 seconds each. Neither the gas valve nor the humidifier will be turned ON.ALS1ALS2BHI/LORBHT/CLRBLWMBLWRCAPCPUDSSEAC-1EAC-2FRS1FRS2FSEFU1FU2GVHPSHPSRHSIHSIRHUMIDMIDRIHI/LORILKJBLEDLGPSLPSLSMGVRLEGENDAUXILIARY LIMIT SWITCH, OVERTEMP.–MANUAL RESET, SPST-(N.C.)AUXILIARY LIMIT SWITCH, OVERTEMP.–AUTO. RESET, SPST-(N.C.)BLOWER MOTOR SPEED CHANGE RELAY, SPDTBLOWER MOTOR SPEED CHANGE RELAY, SPDTBLOWER MOTOR, 4-SPEED, PERMANENT-SPLIT-CAPACITORBLOWER MOTOR RELAY, SPST-(N.O.)CAPACITORMICROPROCESSOR AND CIRCUITRYDRAFT SAFEGUARD SWITCHELECTRONIC AIR CLEANER CONNECTION (115 VAC 1 AMP MAX.)ELECTRONIC AIR CLEANER CONNECTION (COMMON)FLAME ROLLOUT SWITCH OVERTEMP.–MANUAL RESET, SPST-(N.C.)FLAME ROLLOUT SWITCH OVERTEMP.–MANUAL RESET, SPST-(N.C.)FLAME-PROVING SENSOR ELECTRODEFUSE, 3 AMP, AUTOMOTIVE BLADE TYPE, FACTORY INSTALLEDFUSE, FIELD INSTALLEDGAS VALVE-REDUNDANT LOW-HEAT OPERATORS, 2-STAGEHIGH-HEAT PRESSURE SWITCH, SPST-(N.O.)HIGH-HEAT PRESSURE SWITCH RELAY, SPST-(N.C.)HOT-SURFACE IGNITOR (115 VAC)HOT-SURFACE IGNITOR RELAY, SPST-(N.O.)24VAC HUMIDIFIER CONNECTION (.5 AMP MAX.)INDUCED DRAFT MOTOR, 2-SPEED, SHADED–POLEINDUCER MOTOR RELAY, SPST-(N.O.)INDUCER MOTOR SPEED CHANGE RELAY, SPDTBLOWER DOOR INTERLOCK SWITCH, SPST-(N.O.)JUNCTION BOXLIGHT-EMITTING DIODE FOR STATUS CODESLOW GAS-PRESSURE SWITCH, SPST-(N.O.)LOW-HEAT PRESSURE SWITCH, SPST-(N.O.)LIMIT SWITCH, OVERTEMPERATURE-AUTO RESET, SPST-(N.O.)MAIN GAS VALVE RELAY, DPST-(N.O.)–1 = VALVE –2 = HUMIDIFIERPL1PL2PL3PL4PL6PL7SW1SW2SW3 & 4TJTRANTWIN/TEST12-CIRCUIT CONNECTOR9-CIRCUIT CONNECTOR3-CIRCUIT IDM CONNECTOR1-CIRCUIT FPS CONNECTOR2-CIRCUIT HSI CONNECTOR2-CIRCUIT LINE/NEUTRAL CONNECTORHIGH-HEAT-ONLY SWITCH, SPST-(MANUAL) *LOW-HEAT-ONLY SWITCH, SPST-(MANUAL) *BLOWER-OFF DELAY SETTING SWITCHES,SPST-(MANUAL) *TWINNING JUMPER, SPDT FOR MASTER ORSLAVE STATUS-(MANUAL CHANGE-OVER)TRANSFORMER-115VAC/24VAC1-CIRCUIT TWINNING BUSS CONNECTOR,ALSO STATUS CODE RECALLJUNCTIONTERMINALCONTROL TERMINALFACTORY POWER WIRING (115VAC)FACTORY CONTROL WIRING (24VAC)FIELD POWER WIRING (115VAC)FIELD CONTROL WIRING (24VAC)CONDUCTOR ON CONTROLFIELD WIRING SCREW TERMINALFIELD GROUNDEQUIPMENT GROUNDFIELD SPLICEPLUG RECEPTICLE1.2.3.4.5.6.7.8.9.10.11.12.13.14.USE ONLY COPPER WIRE BETWEEN THE DISCONNECT SWITCH ANDTHE UNIT.IF ANY OF THE ORIGINAL WIRE, AS SUPPLIED, MUST BE REPLACED, USETHE SAME OR EQUIVALENT TYPE WIRE.INDUCER (IDM) AND BLOWER (BLWM) MOTORS CONTAIN INTERNAL AUTO-RESET THERMAL OVERLOAD SWITCHES.BLOWER MOTOR SPEED SELECTIONS ARE FOR AVERAGE CONDITIONS.SEE INSTALLATION INSTRUCTIONS FOR DETAILS ON OPTIMUM SPEEDSELECTION.REPLACE ONLY WITH A 3-AMP FUSE.AUXILIARY LIMIT SWITCHES (ALS1 & 2) USED ON DOWNFLOW MODELSONLY.THIS WIRE MUST BE CONNECTED TO FURNACE SHEET METAL FORCONTROL TO PROVE FLAME.FACTORY CONNECTED WHEN LGPS NOT USED.SYMBOLS ARE AN ELECTRICAL REPRESENTATION ONLY.BLOWER-ON DELAY: GAS HEATING 45 SECONDS, COOLING/HEAT PUMP 2SECONDS.COOLING/HEAT PUMP BLOWER-OFF DELAY IS 90 SECONDS.IGNITION-LOCKOUT WILL OCCUR AFTER FOUR CONSECUTIVE UNSUC-CESSFUL TRIALS-FOR-IGNITION. CONTROL WILL AUTOMATICALLY RESETAFTER THREE HOURS.CONTROL MUST BE GROUNDED AT PIN 10 OF 12-PIN CONNECTOR.NA - NOT APPLICABLENOTES:320854-401 REV. DLS FRS2 NOTE #8LPSCONNECTION DIAGRAMREDREDREDFRS1(WHEN USED)HEATSET-UPSWITCHNORMHI HTLO HTSWITCH1 2ONOFFONOFFONOFFONOFFSWITCH3 4BLOWER-OFFDELAY(SEC.)90 SEC135 SEC180 SEC225 SEC 2-STAGEFURNACECONTROLBLOWER-OFF DELAY1 42 3 BLOWER-OFF DELAYLOW-HEAT ONLYHIGH-HEAT ONLYONOFFW2 Com24VW/W1Y/Y2R G HUMTWINTESTLED123TJMSREDREDORNYELREDORN ORNYELNOTE #8DSS LGPSALS1(WHEN USED)NOTE #6ALS2ORNBRNBLUWHTGRN101112P1123789BLKGRYSEC2PR1 PR2L1 L2COMMONHI-COOLHI-GASHEATSEC1LO-GASHEATEAC-2EAC-1PARKFU1PL2YEL(WHEN USED)1 PL4 WHT FSE1 2BLKPL6HSIWHTIDMGRNREDWHTBLK1 2 3 PL3REDBLKWHTBRNGRY BRNHPS HIPMCGRNGRNBLUL1L21 2 WHTBLKILKWHTBLKPL7BLKWHTCAPBRN BRNNOTE #4COMHIMED HIMED LOLOREDBLUWHTBLKYELBLURED BLWMREDBLUWHTBLKTRANSCHEMATIC DIAGRAM(NATURAL GAS & PROPANE)TO 115VAC FIELD DISCONNECT SWITCHEQUIPMENT GROUNDILKL1PL7BLWRHSIR EAC-1 EAC-2BHT/CLRBHI/LOR LO-GAS-HEATPARKHI-COOLCOMMONHI-GAS-HEATLOMED LOMED HIHICOMBLWML2BRNBRNCAPNOTE #4IDRIHI/LORPR1 115VAC24VACTRANPR2SEC1 SEC2FU1NOTE #5 HPSRHSIPL6PL312213394781562LOHICOMIDMN/AN/A122396541107811N/AFRS1(WHEN USED)FRS2LSMGVR-2HUMRTWINTESTSLAVEMASTERW/W1SW1W2Y/Y2GCOMSW4SW3SW2CPUTWINNINGJUMPERTJMGVR-1PL1N/AN/A PL4FSEM PCNOTE#7HIGVHPSNOTE #8LGPS(WHEN USED)NOTE #8 LPSDSSALS1ALS2GVFACTORYSETTINGPL2GRYNOTE #1***13