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Page 36

SURELIGHT CONTROL

COOLING SEQUENCE OF OPERATION

NORMAL COOLING MODE

ABNORMAL COOLING MODE

IGNITION CONTROL MAIN POWER ON.

CONTROL SELF DIAGNOSTIC CHECK.

IS CONTROL OPERATING NORMALLY?

YES

POWER ON

GAS VALVE OFF. COMBUSTION AIR INDUCER OFF.

INDOOR BLOWER OFF WITH NORMAL DELAY.

SIGNAL CIRCUIT BOARD FAILURE AT LED.

INTERRUPT MAIN POWER TO RESET CONTROL.

YES

TURN INDUCER ON FOR 1 SECOND (Control 56L83, 97L48

)

IS POLARITY REVERSED?

ROLLOUT SWITCH MONITORED CONTINUOUSLY.

IS ROLLOUT SWITCH CLOSED?

LED: SLOW FLASH RATE REMAINS UNCHANGED

THROUGHOUT COOLING CYCLE.

THERMOSTAT CALLS FOR COOLING.

COMPRESSOR CONTACTOR AND SYSTEM

FAN ENERGIZED AFTER DELAY.

(Control 69M15 2 second delay)

(Control 56L83, 97L48 0 second delay)

COOL SPEED AND ELECTRONIC AIR

CLEANER TERMINAL IS ENERGIZED.

COMPRESSOR OFF.

THERMOSTAT OPENS.

COOLING SPEED AND ELECTRONIC AIR CLEANER

TERMINAL OFF WITH FIELD ADJUSTABLE DELAY.

(Control 69M15 2 or 45 seconds)

(Control 56L83, 97L48 0 second del;ay)

YES

THERMOSTAT OFF

GAS VALVE OFF. COMBUSTION AIR INDUCER OFF.

INDOOR BLOWER OFF WITH NORMAL DELAY.

SIGNAL CIRCUIT BOARD FAILURE AT LED.

SEQUENCE HOLDS UNTIL ROLLOUT SWITCH CLOSES.

IS THERE

PROPER GROUND?

IS VOLTAGE

ABOVE 75 VOLTS?

YES

LED#1 AND LED#2
ALTERNATING FAST
FLASH. SIGNAL
HOLDS UNTIL UNIT IS
PROPERLY GROUND.

LED#1 AND LED#2 ALTERNATING FAST

FLASH. SIGNAL HOLDS UNTIL VOLTAGE

RISES ABOVE 75 VOLTS.

LED#1 FAST FLASH LED#2 SLOW FLASH

YES

Содержание G50UH Series

Страница 1: ...n only and do not supersede or replace local or state codes In the absence of local or state codes the guidelines and procedures outlined in this manual except where noted are recommended only and do...

Страница 2: ...CH33 36B 2F CH33 42B 2F CH33 44 48B 2F Electrical characteristics 120 volts 60 hertz 1 phase less than 12 amps OPTIONAL ACCESSORIES MUST BE ORDERED EXTRA Air Filter and Rack Kit Number and size of fi...

Страница 3: ...36C 2F CH33 48C 2F CH33 50 60C 2F Electrical characteristics 120 volts 60 hertz 1 phase less than 12 amps OPTIONAL ACCESSORIES MUST BE ORDERED EXTRA Air Filter Rack Kit Horizontal end 87L96 1 18 x 25...

Страница 4: ...g Base Dimensions H x W x D 4 x 21 5 8 x 28 5 8 in 102 x 549 x 727 mm 4 x 24 5 8 x 28 5 8 in 102 x 625 x 727 mm Number and size of field provided fil ter 20 x 25 x 1 in 508 x 635 x25 mm 24 x 24 x 1 in...

Страница 5: ...6K63 1 16 x 25 x 1 406 x 635 x 25 EZ Filter Base Catalog Number Shipping Weight 73P57 8 lbs 4 kg 73P58 10 lbs 5 kg Base Dimensions H x W x D 4 x 21 5 8 x 28 5 8 in 102 x 549 x 727 mm 4 x 24 5 8 x 28 5...

Страница 6: ...with 1 in 25 mm cleanable filter not furnished field provided in place Also see Filter Air Resistance table G50UH 24A 070 PERFORMANCE External Static Air Volume Watts at Various Blower Speeds Externa...

Страница 7: ...h 1 in 25 mm cleanable filter not furnished field provided in place Also see Filter Air Resistance table G50UH 36B 090 PERFORMANCE External Static Air Volume Watts at Various Blower Speeds External St...

Страница 8: ...555 1265 595 459 40 100 1820 860 699 1670 790 611 1470 695 525 1255 590 443 50 125 1740 820 664 1600 755 575 1420 670 496 1215 575 414 60 150 1635 770 624 1530 720 544 1350 635 464 1175 555 400 70 17...

Страница 9: ...t with 1 in 25 mm cleanable filter not furnished field provided in place Also see Filter Air Resistance table G50UH 48C 135 PERFORMANCE External Static Air Volume Watts at Various Blower Speeds Extern...

Страница 10: ...filter not furnished field provided in place Also see Filter Air Resistance table G50UH 60C 110 1 2 3 PERFORMANCE Single Side Return Air Air volumes in bold require field fabricated transition to acc...

Страница 11: ...60 667 30 75 2205 1040 1218 2075 980 924 1860 875 782 1605 755 655 40 100 2130 1005 1189 2005 945 905 1815 855 752 1595 750 636 50 125 2045 965 1159 1920 905 864 1750 825 726 1565 740 619 60 150 1955...

Страница 12: ...tts 00 0 2715 1280 1407 2255 1065 1070 1910 900 850 1660 785 674 10 25 2640 1245 1403 2250 1060 1030 1900 895 834 1645 775 668 20 50 2540 1200 1355 2245 1060 1006 1890 890 821 1630 770 665 30 75 2480...

Страница 13: ...nable filter not furnished field provided in place Also see Filter Air Resistance table G50UH 60D 155 1 2 3 PERFORMANCE Single Side Return Air Air volumes in bold require field fabricated transition t...

Страница 14: ...r Air volumes in bold require field fabricated transition to accom modate 20 x 25 x 1 in 508 x 635 x25 mm cleanable air filter in order to maintain proper air velocity External Static Air Volume Watts...

Страница 15: ...10 0 2 49 HIGH ALTITUDE G50UH 1 1 High Altitude Orifice Kit Natural Gas Only High Altitude Prove Switch Kit LPG Propane Kit G50UH 1 to 14 Natural Gas Only 4501 7500 ft 1373 2286m 7501 10 000 ft 2287...

Страница 16: ...Burner Bottom Shield Limit Shield Secondary Limit as required NOx Units Only G50UH X PARTS ARRANGEMENT UP FLOW POSITION FIGURE 1 Gas Manifold 135 and 155 kBtuh units only Flame rollout switches are lo...

Страница 17: ...HEATING COMPONENTS COMBUSTION AIR INDUCER PROVE SWITCH PRIMARY LIMIT PRIMARY LIMIT SHIELD GAS VALVE ROLLOUT SWITCHES MANIFOLD BURNER ASSEMBLY NOx Insert NOx Units Only HEAT EXCHANGER FLUE COLLECTOR B...

Страница 18: ...also located in the control box The switch provides overcurrent protection to the trans former T1 The breaker is rated 3A at 32V If the cur rent exceeds this limit the breaker will trip and all unit...

Страница 19: ...times with an inter purge and warm up time between trials of 35 seconds Af ter a total of five trials for ignition including the initial trial the control goes into Watchguard Flame Failure mode Af t...

Страница 20: ...4 shows 24 volt and 120 volt control terminal designations Tables 5 and 6 show jack plug terminal designations See table 8 for troubleshooting diagnostic codes Units equipped with the SureLight system...

Страница 21: ...ight control utilizes less power to energize the ignitor on successive calls for heat The control continues to ramp down the voltage to the ignitor until it finds the lowest amount of power that will...

Страница 22: ...tor improperly attached ON ON ON OFF Circuit board failure or control wired incorrectly OFF ON y FAST FLASH SLOW FLASH Main power polarity reversed Switch line and neutral SLOW FLASH FAST FLASH Low fl...

Страница 23: ...the board voltage cannot be measured so ignitor must be ohmed Ohm value should be 10 9 to 19 7 See figure 12 for ignitor location NOTE The G50UH X furnace contains electronic components that are polar...

Страница 24: ...60C 110 4 5 units 2 5 32 36C 110 2 5 32 48C 60D 135 6 and later 1 to 5 units 2 3 8 2 5 32 60D 155 2 60 Horizontal Applications The G50UH X furnace can be installed in horizontal ap plications The comb...

Страница 25: ...nace control energizes the supply air blower and closes the gas valve The limit automatically resets when unit tempera ture returns to normal The switch must reset within three min utes or SureLight...

Страница 26: ...throw proving switch elec trically connected to the furnace control The purpose of the switch is to prevent burner operation if the combustion air inducer is not operating or if the flue becomes obstr...

Страница 27: ...rical power to unit if service is to be performed 3 Remove access panel 4 Switch lever on White Rodgers gas valve to OFF turn knob on Honeywell valve clockwise to OFF Do not force 5 Replace access pan...

Страница 28: ...anifold pres sure settings Manifold Adjustment Procedure 1 Connect a test gauge to outlet pressure tap on gas valve See figures 15 16 and 17 Start unit and allow 5 minutes for unit to reach steady sta...

Страница 29: ...AD TO IGNITION CONTROL SENSOR WIRE FIGURE 20 TABLE 16 FLAME SIGNAL in MICROAMPS SureLight Normal Low Drop Out 56L83 97L48 0 61 0 21 0 60 0 20 69M15 0 31 0 25 0 30 0 24 V TYPICAL OPERATING CHARACTERIST...

Страница 30: ...COOL terminal The con tinuous blower tap is connected to the FAN terminal To change existing heat tap turn off power then switch out speed tap on HEAT with tap connected to one of two PARK terminals S...

Страница 31: ...n air inducer Leaving off screws may cause leaks 13 Clean burner by running a vacuum with a soft brush at tachment over face of burners Visually inspect inside of burners and crossovers for any blocka...

Страница 32: ...2 minutes or control goes into 5 minute Watchguard Pressure Switch delay Once S18 closes a 15 second pre purge follows 4 SureLight control A92 energizes ignitor A 20 second warm up period begins 5 Ga...

Страница 33: ...oes into 5 minute Watchguard Pressure Switch delay Once S18 closes a 15 second pre purge follows 4 SureLight control A92 energizes ignitor A 20 second warm up period begins 5 Gas valve opens for a 4 s...

Страница 34: ...COMBUSTION AIR INDUCER OFF INDOOR BLOWER OFF WITH DELAY LED 1 OFF LED 2 SLOW FLASH Sequence holds until PROVE switch closes or thermostat resets control NO NO YES NO IS THERE PROPER GROUND IS VOLTAGE...

Страница 35: ...CER OFF INDOOR BLOWER OFF WITH DELAY LED 1 ALT SLOW FLASH LED 2 ALT SLOW FLASH IS 60 MINUTE RESET PERIOD COMPLETE YES 4 SECONDS YES HAS CONTROL RESET IGNITION SEQUENCE FOUR TIMES FLAME SIGNAL NORMAL S...

Страница 36: ...ACTOR AND SYSTEM FAN ENERGIZED AFTER DELAY Control 69M15 2 second delay Control 56L83 97L48 0 second delay COOL SPEED AND ELECTRONIC AIR CLEANER TERMINAL IS ENERGIZED COMPRESSOR OFF THERMOSTAT OPENS C...

Страница 37: ...OPENS COMBUSTION AIR INDUCER AND HEATING ACCESSORY TERMINAL ARE DE ENERGIZED INDOOR BLOWER SWITCHES TO COOL SPEED THERMOSTAT OPENS INDOOR BLOWER SWITCHES TO CONTINUOUS BLOWER ELECTRONIC AIR CLEANER T...

Страница 38: ...ION 1 Manually reset the roll out switch by pushing the top button ACTION 2 Determine the cause of the roll out switch activation before leaving furnace code LED 1 O 1 2 2 Roll out switch failure ACTI...

Страница 39: ...1997 combustion air inducer will cycle 5 seconds on 55 seconds off LED 1 Alternating Fast Flash LED 2 Alternating Fast Flash 2 1 2 Broken or failed ignitor ACTION 1 Unplug ignitor and read resistance...

Страница 40: ...ing demand Diagnostic lights flash the pressure switch failure code 2 5 minutes after heating demand 4 1 2 Prove switch does not close due to obstructions in the pressure lines ACTION 1 Remove any obs...

Страница 41: ...ssure switch code LED 1 Off LED 2 Slow Flash 6 1 1 Low pressure differential at the prove switch ACTION 1 Check for restricted exhaust vent Remove all blockage ACTION 2 Check for proper vent sizing Se...

Страница 42: ...6 3 3 Insufficient flow through the heat ex changer caused by a sooted or re stricted heat exchanger ACTION 1 Check for sooting deposits or other restrictions in the heat exchanger assembly Clean asse...

Страница 43: ...Properly locate the sense rod or replace if rod cannot be located correctly sense code LED 1 Slow Flash LED 2 Fast Flash 7 1 2 Sense rod is contaminated ACTION 1 Check sense rod for contamination or...

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