Lennox SL280DF070V36A Unit Information Download Page 57

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Page 57

Ignition Control 107045-XX

FIGURE 2

Optional Accessories With Communicating System

CUT*

R−DS

W914

LENNOX

COMMUNICATING
OUTDOOR UNIT

LENNOX COMMUNICATING

INDOOR UNIT

LENNOX COMMUNICATING

THERMOSTAT OR DAMPER

CONTROL MODULE

NVENTIONAL TERMINAL

FLOAT

SWITCH

LENNOX COMMUNICATING

INDOOR UNIT

CONVENTIONAL

OUTDOOR UNIT

(1 OR 2 STAGE)

LENNOX COMMUNICATING FURNACE

EL296V, SL280V, SL280VN, SL297V, SLP99V

cutting DS to R will not cause

communication interuption

or error code

A2L

Summary of Contents for SL280DF070V36A

Page 1: ...FV model units are equipped with a communicating enabled SureLight two stage variable speed integrated control All units use a redundant gas valve to assure safety shut off as required by CSA All spec...

Page 2: ...overcurrent protection 15 20 20 20 Shipping Data lbs 1 package 130 153 164 173 NOTE Filters and provisions for mounting are not furnished and must be field provided 1 Annual Fuel Utilization Efficien...

Page 3: ...ooling speed minimum 250 cfm Lennox iHarmony Zoning System Applications Minimum blower speed is 250 cfm SL280DF070V36A BLOWER MOTOR WATTS COOLING 1 Cooling Speed DIP Switch Settings Motor Watts Variou...

Page 4: ...ling speed minimum 380 cfm Lennox iHarmony Zoning System Applications Minimum blower speed is 380 cfm SL280DF090V48B BLOWER MOTOR WATTS COOLING 1 Cooling Speed DIP Switch Settings Motor Watts Various...

Page 5: ...ed minimum 450 cfm Lennox iHarmony Zoning System Applications Minimum blower speed is 450 cfm SL280DF090V60C BLOWER MOTOR WATTS COOLING 1 Cooling Speed DIP Switch Settings Motor Watts Various External...

Page 6: ...peed minimum 450 cfm Lennox iHarmony Zoning System Applications Minimum blower speed is 450 cfm SL280DF110V60C BLOWER MOTOR WATTS COOLING 1 Cooling Speed DIP Switch Settings Motor Watts Various Extern...

Page 7: ...CK SWITCH HEAT EXCHANGER COMBUSTION AIR INDUCER COMBUSTION AIR INDUCER PRESSURE SWITCHES GAS VALVE BURNER BOX ASSEMBLY INNER BLOWER ACCESS PANEL ACCESS PANEL CONTROL BOX Includes two stage integrated...

Page 8: ...92 Units are equipped with the communicating enabled Sure Light two stage variable speed integrated control This control is used with the communicating thermostat as part of a communicating comfort sy...

Page 9: ...mostat Move the DIP switch to ON for use with a single stage thermostat While in the single stage thermostat mode the burners will always fire on first stage heat The combustion air in ducer will oper...

Page 10: ...DEMAND FROM 1ST STAGE T STAT R CLASS 2 VOLTAGE TO THERMOSTAT G MANUAL FAN FROM T STAT C THERMOSTAT SIGNAL GROUND CONNECTED TO TRANSFORMER GRD TR CHASIS GROUND GRD Y1 THERMOSTAT 1ST STAGE COOL SIGNAL...

Page 11: ...2ND STAGE T STAT W1 HEAT DEMAND FROM 1ST STAGE T STAT R CLASS 2 VOLTAGE TO THERMOSTAT G MANUAL FAN FROM T STAT C THERMOSTAT SIGNAL GROUND CONNECTED TO TRANSFORMER GRD TR CHASIS GROUND GRD Y1 THERMOSTA...

Page 12: ...OFF OPTION B OFF 82 100 OFF OPTION C OFF 100 100 OFF OPTION D OFF 100 OFF DEFAULT 10 10 HIGH SPEED MEDIUM HIGH SPEED MEDIUM LOW SPEED LOW SPEED 7 PROTECTIVE PLASTIC FILM ON DIP SWITCHES MAY BE REMOVED...

Page 13: ...flame signal mode The integrated control will display the flame current on 7 segment LED in in micro amps uA Flame signal mode is exited after any of the following Power is reset Pressing and holding...

Page 14: ...t Alarm clears 5 seconds after fault recovered E111 Low line voltage Reverse line power voltage wiring System resumes normal operation 5 seconds after fault recovered E112 Ground not detected System s...

Page 15: ...ge appropriate feature will be set as installed and that could be seen in About screen In normal operation after control recognizes sensors alarm will be sent if valid temperature reading is lost To g...

Page 16: ...for correct operation and restriction Resumes normal operation after fault is cleared E227 Low pressure switch open during trial for ignition or run mode Check pressure inches w c of low pressure swi...

Page 17: ...ing connections 1 hour soft lockout Clears when calibration has finished successfully E290 Ignitor circuit fault Failed ignitor or triggering cir cuitry Measure resistance of hot surface ignitor Repla...

Page 18: ...Volts between R O on integrated control with non communicating outdoor unit Dual fuel module required for heat pump application Configuration link R to O needs to be restored Replace link or hard wir...

Page 19: ...pressor open run circuit Required amount of current is not passing through Run current transformer Clears the error after current is sensed in RUN sensor or 1 normal compressor run cycle or after powe...

Page 20: ...w line voltage Line Voltage Low Voltage lower than nameplate rating Check power line voltage and correct Alarm clears 5 seconds after fault recovered E111 Low line voltage Reverse line power voltage w...

Page 21: ...that could be seen in About screen In normal operation after control recognizes sensors alarm will be sent if valid temperature reading is lost To get rid of setting and alarm redo configu ration and...

Page 22: ...for correct operation and restriction Resumes normal operation after fault is cleared E227 Low pressure switch open during trial for ignition or run mode Check pressure inches w c of low pressure swi...

Page 23: ...ars when heat call finishes successfully E275 Soft lockout Flame sensed out of sequence Flame signal is gone Shut off gas Check for gas valve leak 1 hour soft lockout Clears when flame has been proven...

Page 24: ...operate but might not meet efficiency and capacity pa rameters Alarm will clear when commissioning is exited Cleared after commissioning is complete E334 Relay Y1 stuck on interated control Replace in...

Page 25: ...d 110 F at the exact moment that the blower is de en ergized Longer off delay settings provide lower supply air temperatures shorter settings provide higher supply air temperatures TABLE 6 provides th...

Page 26: ...eed Switch 11 Switch 12 Switch 13 Increase 24 On On On Increase 18 On On Off Increase 12 On Off On Increase 6 On Off Off Factory Default Off Off Off Decrease 6 Off Off On Decrease 12 Off On Off Decrea...

Page 27: ...rmal Operation 1 On On On Acceptable 24 VAC High 100 Compressor and indoor blower follow thermostat demand BASIC MODE only active on a Y1 thermostat demand Normal Operation 1 On On On Acceptable 24 VA...

Page 28: ...by allowing the room space to maintain a cooler room thermostat setpoint ROOM THERMOSTAT CALLS FOR FIRST AND SECOND STAGE COOLING BASIC MODE only active on a Y1 thermostat demand Normal Operation 1 On...

Page 29: ...WER MOTOR COMPONENTS STATOR WINDINGS OUTPUT SHAFT BEARING ROTOR FIGURE 8 The controller uses sensing devices to sense what posi tion the rotor is in at any given time By sensing the posi tion of the r...

Page 30: ...to the unit before attempting to service motor WARNING Disconnect power from unit and wait at least five minutes to allow capacitors to discharge before attempting to service motor Failure to wait ma...

Page 31: ...Line Voltage Connector J49 4 Pin Control Connector J48 5 Pin J49 4 Pin FIGURE 9 BLOWER B3 HARNESS CONNECTORS MOTOR with INTEGRATED CONTROLLER SHAFT P49 4 Pin P48 5 Pin P48 5 Pin P49 4 Pin J48 Connecto...

Page 32: ...A Measure the resistance between each of the three motor leads 3 pin plug and the unpainted part of the end shield If the winding resistance to ground is 100k ohms replace the motor and control module...

Page 33: ...14 The limit is a N C SPST manual reset limit connected in series with the secondary limit S21 When S47 senses rollout the circuit breaks and the ignition control immedi ately stops ignition and close...

Page 34: ...Page 34 HEATING COMPONENTS Sight Glass Sensor Rollout Switch Rollout Switch alternate location Gas Valve and Manifold Assembly Burners Ignitor FIGURE 14...

Page 35: ...ug and control If the reading is not correct the issue is the ignitor Test 3 Insert meter probes into the terminals 1 and 5 Use small diameter probes in order to not damage plug Check voltage during 2...

Page 36: ...are a single pole single throw proving switch electrically connected to the furnace control The purpose of the switch is to prevent burner operation if the com bustion air inducer is not operating or...

Page 37: ...lly started steps 1 through 11 may need to be repeated to purge air from gas line Turning Off Gas To Unit 1 Set thermostat to lowest setting 2 Turn off all electrical power to unit if service is to be...

Page 38: ...t use matches candles flame or any other source of ignition to check for gas leaks D Testing Gas Supply Pressure White Rodgers Gas Valve An inlet post located on the gas valve provides access to the s...

Page 39: ...33 66 82 164 IMPORTANT For safety shut unit off and remove manometer as soon as an accurate reading has been obtained Take care to replace pressure tap plug G Proper Combustion Furnace should operate...

Page 40: ...kit required 3 A natural to L P propane gas changeover kit is necessary to convert this unit Refer to the changeover kit installation instruction for the conversion procedure NOTE Units may be install...

Page 41: ...diameter hole in supply and return air plenums Insert manometer hose flush with inside edge of hole or insulation Seal around the hose with permagum Connect the zero end of the manometer to the discha...

Page 42: ...xchanger inspection procedure This procedure can be viewed at www ahrinet org 8 Ensure sufficient combustion air is available to the furnace Fresh air grilles and louvers on the unit and in the room w...

Page 43: ...ful with the collector box gasket If the gasket is damaged it must be replaced to prevent leakage 6 Disconnect gas supply piping Remove the screw securing the burner box cover and remove cover Remove...

Page 44: ...utlet 18 Reconnect gas supply piping 19 Turn on power and gas supply to unit 20 Set thermostat and check for proper operation 21 Check all piping connections factory and field for gas leaks Use a leak...

Page 45: ...Page 45 VII Wiring and Sequence of Operation Wiring Diagram With Ignition Control 103130 XX SL280DFV Schematic Wiring Diagram...

Page 46: ...Page 46 Wiring Diagram With Ignition Control 107045 XX...

Page 47: ...tat demand for low fire first stage heat is satisfied the gas valve is de energized and the field selected indoor blower off delay begins The combustion air inducer begins a 5 second post purge period...

Page 48: ...HARGE AIR SENSOR CLIP ON BOARD LINK W915 Y1 TO Y2 FOR TWO STAGE OPERATION Communicating Integrated Control Communicating Thermostat Outdoor Unit nace air handler control and four wires between the out...

Page 49: ...s 18 RSBus Rf W Gh Gs Cf HVAC EQUIP DEHUMIDIFIER CONTROL HVAC EQUIPMENT DH 24V IN JUMPER COMMUNICATING ENABLED FURNACE COMMUNICATING ENABLED FURNACE ICOMMUNICATING THERMOSTAT CONVENTIONAL NON COMMUNIC...

Page 50: ...DOOR UNIT LENNOX COMMUNICATING THERMOSTAT OR DAMPER CONTROL MODULE CONVENTIONAL TERMINALS FLOAT SWITCH LENNOX COMMUNICATING INDOOR UNIT CONVENTIONAL OUTDOOR UNIT 1 OR 2 STAGE LENNOX COMMUNICATING FURN...

Page 51: ...N 12 minutes ON DO NOT CUT ANY ON BOARD LINKS S1 T STAT FURNACE TERM STRIP OUTDOOR UNIT 1 Heat 2 Cool NOTE Use DIP switch 2 to set second stage heat ON delay OFF 7 minutes ON 12 minutes ON CUT ON BOAR...

Page 52: ...RD LINK W915 2 STAGE COMPR S1 T STAT FURNACE TERM STRIP OUTDOOR UNIT 2 Heat 2 Cool with t stat with humidity control OFF CUT ON BOARD LINK W915 2 STAGE COMPR CUT ON BOARD LINK W914 DEHUM OR HARMONY S1...

Page 53: ...ol OFF CUT ON BOARD LINK W951 HEAT PUMP T STAT FURNACE TERM STRIP HEAT PUMP 67M41 Y H L Y2 D B L Y2 T T outdoor sensor Dual Fuel Two Stage Heat Pump ComfortSense thermostat w bilities Capable of 2 sta...

Page 54: ...MP CUT ON BOARD LINK W914 DEHUM OR HARMONY T STAT FURNACE TERM STRIP HEAT PUMP 67M41 Y H L Y2 D B L Y2 T T outdoor sensor Dual Fuel Two Stage Heat Pump ComfortSense thermostat w bilities Capable of 2...

Page 55: ...FOR TWO STAGE OPERATION Communicating Integrated Control Communicating Thermostat Outdoor Unit nace air handler control and four wires between the outdoor unit and the furnace air handler control Whe...

Page 56: ...otal length of all con nections on the RSBus is limited to 1500ft Wire gauge of RSBus wire is 18 RSBus Rf W Gh Gs Cf HVAC EQUIP DEHUMIDIFIER CONTROL HVAC EQUIPMENT DH 24V IN JUMPER COMMUNICATING ENABL...

Page 57: ...IT LENNOX COMMUNICATING INDOOR UNIT LENNOX COMMUNICATING THERMOSTAT OR DAMPER CONTROL MODULE CONVENTIONAL TERMINALS FLOAT SWITCH LENNOX COMMUNICATING INDOOR UNIT CONVENTIONAL OUTDOOR UNIT 1 OR 2 STAGE...

Page 58: ...2 minutes ON DO NOT CUT ANY ON BOARD LINKS S1 T STAT FURNACE TERM STRIP OUTDOOR UNIT H 1 Heat 2 Cool NOTE Use DIP switch 2 to set second stage heat ON delay OFF 7 minutes ON 12 minutes ON CUT ON BOARD...

Page 59: ...INK W915 2 STAGE COMPR S1 T STAT FURNACE TERM STRIP OUTDOOR UNIT H 2 Heat 2 Cool with t stat with humidity control OFF CUT ON BOARD LINK W915 2 STAGE COMPR CUT ON BOARD LINK W914 DEHUM OR HARMONY S1 T...

Page 60: ...T ON BOARD LINK W951 HEAT PUMP L7742U T STAT FURNACE TERM STRIP HEAT PUMP 67M41 Y H L Y2 D B L Y2 T T outdoor sensor H Dual Fuel Two Stage Heat Pump ComfortSense thermostat w bilities Capable of 2 sta...

Page 61: ...T ON BOARD LINK W914 DEHUM OR HARMONY L7742U T STAT FURNACE TERM STRIP HEAT PUMP 67M41 Y H L Y2 D B L Y2 T T outdoor sensor H Dual Fuel Two Stage Heat Pump ComfortSense thermostat w bilities Capable o...

Page 62: ...ntegrated control will store code in memory and will automatically exit Program Unit Capacity Size Mode and reset If second period expires or push button is held less than five seconds control will au...

Page 63: ...INDUCER OFF AFTER POST PURGE HARD LOCKOUT ERROR CODE FLASHES YES YES YES 1 2 1 LOW PRESSURE SWITCH OPENS 1 2 HARD LOCKOUT REQUIRES THERMOSTAT RESET OR CYCLING OF POWER TO RESET THE LOCKOUT 3 IN CASE H...

Page 64: ...2ND STAGE HEAT YES CALL FOR HEAT SATISFIED INDUCER SWITCHED TO HIGH SPEED SINGLE STAGE THERMOSTAT 2 STAGE THERMOSTAT NO INDUCER SWITCHED TO LOW SPEED 5 MINUTE DELAY ERROR CODE FLASHES HIGH PRESSURE S...

Page 65: ...TISFIED NO YES DE ENERGIZE 2ND STAGE GAS VALVE INDUCER SPEED SWITCHED TO LOW SPEED 1 2 3 1ST STAGE HEAT 1ST STAGE CALL FOR HEAT SATISFIED NO YES GAS VALVE DE ENERGIZED INDUCER OFF AFTER 5 SECOND POST...

Page 66: ...PECIFIC PROFILE IS SELECTED USING THE 1 1 2 2 1 1 1 2 2 DE ENERGIZE 1ST STAGE COOLING CONTACTOR COMPRESSOR FAN 2ND STAGE COOLING REQUEST STILL ACTIVE COOLING REQUEST STILL ACTIVE CALL FOR COOLING WAIT...

Page 67: ...REQUEST FOR COOLING RECEIVED GO TO CALL FOR 1ST STAGE HEAT YES GO TO CALL FOR COOLING 1 1 1 4 YES NO CALL FOR FAN INDOOR BLOWER ON CONTINUOUS FAN SPEED MAINTAIN INDOOR BLOWER AT CONTINUOUS FAN MAINTAI...

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