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Lennox Core Unit Controller, Setup Manual

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Lennox Core Unit Controller Setup Manual Download Page 47

47

Table 11.  CORE Control System Alarm and Event Codes

SELECTED ALARMS (MARKED WITH * IN TAbLE RESULT IN THE CLOSURE OF THE SERVICE RELAY CONTACTS (DO1). 

ALARM 

CODE

DISPLAY MESSAGE

EVENT ACTION

212

MAJOR LOSS CONDENSER AIRFLOW

Major Loss of Condenser Airflow

213

MAJOR LOSS EVAPORATOR AIRFLOW 

Major Loss of Evaporator Airflow

214

C1 COMPRESSOR FLOODING 

Compressor Flooding Compressor 1

215

C2 COMPRESSOR FLOODING 

Compressor Flooding Compressor 2

216

C3 COMPRESSOR FLOODING 

Compressor Flooding Compressor 3

217

C4 COMPRESSOR FLOODING 

Compressor Flooding Compressor 4

218

C1 SAT LIQUID TEMP SENSOR

Saturated Liquid Temperature Sensor Circuit 1 has failed.
Saturated Liquid Temperature Sensor Circuit 1 has become dislodged.

219

C2 SAT LIQUID TEMP SENSOR

Saturated Liquid Temperature Sensor Circuit 2 has failed.
Saturated Liquid Temperature Sensor Circuit 2 has become dislodged.

220

C3 SAT LIQUID TEMP SENSOR

Saturated Liquid Temperature Sensor Circuit 3 has failed.
Saturated Liquid Temperature Sensor Circuit 3 has become dislodged.

221

C4 SAT LIQUID TEMP SENSOR

Saturated Liquid Temperature Sensor Circuit 4 has failed.
Saturated Liquid Temperature Sensor Circuit 4 has become dislodged.

222

C1 LIQUID TEMP SENSOR

Liquid Temperature Sensor Circuit 1 has failed.
Liquid Temperature Sensor Circuit 1 has become dislodged.

223

C2 LIQUID TEMP SENSOR

Liquid Temperature Sensor Circuit 2 has failed.
Liquid Temperature Sensor Circuit 2 has become dislodged.

224

C3 LIQUID TEMP SENSOR

Liquid Temperature Sensor Circuit 3 has failed.
Liquid Temperature Sensor Circuit 3 has become dislodged.

225

C4 LIQUID TEMP SENSOR

Liquid Temperature Sensor Circuit 4 has failed.
Liquid Temperature Sensor Circuit 4 has become dislodged.

226

C1 SAT SUCTION TEMP SENSOR

Saturated Suction Temperature Sensor Circuit 1 has failed.
Saturated Suction Temperature Sensor Circuit 1 has become dislodged.

227

C2 SAT SUCTION TEMP SENSOR

Saturated Suction Temperature Sensor Circuit 2 has failed.
Saturated Suction Temperature Sensor Circuit 2 has become dislodged.

228

C3 SAT SUCTION TEMP SENSOR

Saturated Suction Temperature Sensor Circuit 3 has failed.
Saturated Suction Temperature Sensor Circuit 3 has become dislodged.

229

C4 SAT SUCTION TEMP SENSOR

Saturated Suction Temperature Sensor Circuit 4 has failed.
Saturated Suction Temperature Sensor Circuit 4 has become dislodged.

230

C1 SUCTION TEMP SENSOR 

Suction Temperature Sensor Circuit 1 has failed.
Suction Temperature Sensor Circuit 1 has become dislodged.

231

C2 SUCTION TEMP SENSOR 

Suction Temperature Sensor Circuit 2 has failed.
Suction Temperature Sensor Circuit 2 has become dislodged.

232

C3 SUCTION TEMP SENSOR 

Suction Temperature Sensor Circuit 3 has failed.
Suction Temperature Sensor Circuit 3 has become dislodged.

233

C4 SUCTION TEMP SENSOR 

Suction Temperature Sensor Circuit 4 has failed.
Suction Temperature Sensor Circuit 4 has become dislodged.

234

UTEC INTERNAL FAULT GV1 ROM 

RAM

235

UTEC INTERNAL FAULT GV2 ROM 

RAM

236

UTEC MAX FLAME LOSS GV1

237

UTEC MAX FLAME LOSS GV2

238

UTEC FALSE FLAME GV1

239

UTEC FALSE FLAME GV2

240

UTEC INTERNAL FAULT GV1 VALVE

241

UTEC INTERNAL FAULT GV2 VALVE

242

UTEC VALVE FAULT LOCKOUT GV1

Summary of Contents for Core Unit Controller

Page 1: ...ersedes 3 2021 WARNING Improper installation adjustment alteration service or maintenance can cause property damage personal injury or loss of life Installation and service must be performed by a licensed professional HVAC installer or equivalent or service agency ...

Page 2: ...Service App RTU Menu 8 9 1 Setup 8 9 2 Data 18 9 3 Service 22 9 4 Settings 26 10 Special Equipment Configurations 28 10 1 Thermal Protection Switches S5 S8 S31 and S180 28 10 2 Blower Operation with Effective Occupancy 28 10 3 Enabling Economizer and Settings 30 10 4 Free Cooling Compressor Lockout Mode and Low Ambient Set Point 30 10 5 Demand Control Ventilation 32 10 6 Determining Indoor Air Qua...

Page 3: ...nician to download and transfer unit information to help verify service was performed USB software updates on the CORE Unit Controller enhance functionality without the need to change components 1 3 Configurable Sequences of Operation Single Zone VAV Discharge Control Cooling With room sensor or 24V DDC Three Cooling Stages With compatible thermostat or DDC additional relay Four Heating Stages usi...

Page 4: ...main installed across both pins as shipped from the factory a HUMIDISTAT COMMON ISOLATION HMD_COM Jumper The humidity HUM sensor commons are located on connector P298 and may be isolated if they are powered remotely Remove jumper This jumper is located to the right of P299 connector This jumper would be removed only in unique situations where the device supplying the thermostat humidistat signals ...

Page 5: ...tivity Slow Flash 1 second on 1 second off Fast Flash second on second off A flickering LED flashes significantly faster than a fast flash NOTE LEDs are energized by 24VAC thermostat inputs f LOCAL INTERFACE PUSH BUTTONS AND HEART BEAT Figure 2 Push Buttons and Heart Beat g LOCAL INTERFACE FOUR CHARACTER SEVEN SEGMENT LED STATUS CODES Table 2 Status Codes Status Code Definition PnSt Pre Install A1...

Page 6: ... required On demand or automatic CORE Unit Controller connects to cloud via IP Ethernet Can check on demand or nightly Configurable via app Default On demand Free updates Updates are also available via USB 2 Network Types The following are the types of communication network types supported Table 3 Network Types Screen Label Network Type LON LonTalk BACNET BACnet MS TP and IP LCONN L Connection RTU...

Page 7: ...e RTU name model number serial number and firmware version 6 System Overview Room Sensor Mode a The system overview shall put emphasis on the zone temperature and RH The zone temperature rh indicates a _ _ if out of range The RH value will not appear if not configured b The system overview in room sensor mode places emphasis on the current operating modes c The system overview indicates all active...

Page 8: ...GM Tonnage 4 5 6 Efficiency 7 High Efficiency H Standard Efficiency S Ultra High Efficiency U 10 Factory Electric or Gas Heat See unit nameplate for applicable electric or gas heat designation 11 Design Sequence 1 First revision 12 Voltage See unit nameplate for applicable electric voltage designation Refrigerant 8 HFC 410A 4 Blower Type 9 Belt Drive 1 speed B Direct Drive D EBM MSAV E Mitsubishi ...

Page 9: ...3 N Not Installed Y Installed 8 Load Shedding N Not Installed G Global P297 pin 9 2 Installed on DI 2 3 Installed on DI 3 9 Field Electric Heat 1 Air Flow Proving Switch S52 3 Overflow Switch S149 S179 4 Motor Overload Switch S42 Not Installed N Installed on DI 2 2 Installed on DI 3 3 7 Zone Bypass Damper N Not Installed Y Installed 6 IAQ Options N Not Installed 1 UV Lamp Installed 1 2 3 4 5 6 7 8...

Page 10: ...OINT DEHUMIDIFICATION DEADBAND OVERCOOL LIMIT ON PREVIOUS COOLING BLOWER OCCUPIED SELECT SENSOR TYPE SELECT SENSOR TYPE NONE REHEAT DIGITAL INPUT 4 NETWORK SENSOR LOCAL SENSOR INSTALL SUMMARY DEHUMIDIFACTION SETPOINT DEHUMIDIFICATION DEADBAND OVERCOOL LIMIT DEHUMIDIFACTION SETPOINT DEHUMIDIFICATION DEADBAND ENHANCED DEHUMIDIFCATION ON OFF DEHUMIDIFICATION DEADBAND OVERCOOL LIMIT YES NO CONDITIONS ...

Page 11: ...1 ON CONTINUOUS 2 ON CONTINUOUS 3 NONE WIRE THERMOSTAT RETURN AIR BACKUP EDIT RETURN AIR BACKUP SETPOINTS NETWORK S BUS SENSOR LOCAL OR NONE NETWORK S BUS SENSOR LOCAL OR NONE NETWORK S BUS SENSOR SUMMARY NETWORK THERMOSTAT SELECT CONTROL MODE SELECT RELATIVE HUMIDITY SENSOR SOURCE SELECT TEMPERATURE SENSOR SOURCE SELECT CO2 SENSOR SOURCE SELECT OCCUPIED BLOWER MODE SELECT BACKUP MODE Figure 8 BAC...

Page 12: ...ONLY SUMMARY ROOMSENSOR NETWORK THERMOSTAT SELECT CONTROL MODE LOCAL ORNONE AUTO CYCLE ONCONTINUOUS1 ONCONTINUOUS2 ONCONTINUOUS3 NONE WIRETHERMOSTAT RETURNAIR BACKUP EDITRETURNAIR BACKUPSETPOINTS NETWORK S BUSSENSOR LOCAL ORNONE NETWORK S BUSSENSOR LOCAL ORNONE NETWORK S BUSSENSOR SUMMARY SELECT RELATIVE HUMIDITY SENSOR SOURCE SELECT TEMPERATURE SENSOR SOURCE SELECTCO2 SENSOR SOURCE SELECT OCCUPIE...

Page 13: ...1 ONCONTINUOUS2 ONCONTINUOUS3 NONE WIRETHERMOSTAT RETURNAIR BACKUP EDITRETURNAIR BACKUPSETPOINTS NETWORK LOCAL ORNONE NETWORK LOCAL ORNONE NETWORK SUMMARY SELECT CONTROL MODE SELECTRELATIVE HUMIDITYSENSOR SOURCE SELECT TEMPERATURE SENSOR SOURCE SELECTCO2 SENSOR SOURCE SELECT OCCUPIED BLOWER MODE SELECT BACKUPMODE Figure 10 LonTalk Menu Structure ...

Page 14: ...L ORNONE NETWORK S BUSSENSOR SUMMARY NETWORK THERMOSTAT SELECT CONTROL MODE SELECT RELATIVE HUMIDITY SENSOR SOURCE SELECT TEMPERATURE SENSOR SOURCE SELECTCO2 SENSOR SOURCE SELECT OCCUPIED BLOWER MODE SELECT BACKUPMODE Figure 11 S Bus Menu Structure NETWORK INTEGRATION NETWORK STATUS NETWORK SETUP NETWORK SETUP WIZARD STAND ALONE RTU AUTO CYCLE ON CONTINUOUS NONE RETURN AIR BACKUP EDIT RETURN AIR B...

Page 15: ...TWORK GROUP NUMBER NODE NUMBER FUNCTIONS PROXY RELAY FRIEND PROVISON SENSOR NETWORK CUSTOM NAME FOR NODE OPTIONAL PRESS BEACONING BUTTON NODE PROVISION Figure 13 Wireless Sensor Network Setup Menu Structure NETWORK INTEGRATION NETWORK SETUP CLOUD IP CONFIGURATION NETWORK STATUS REMOTE SERVER ACCESS NETWORK STATIC DYNAMIC DHCP NONE CLOUD IP CONFIGURATION IP ADDRESS SUBNET MASK DNS DEFAULT GATEWAY P...

Page 16: ...RE SETPOINT SET FRESH AIR SETPOINTS SUMMARY SET BUILDING PRESSURE SETPOINT Figure 15 Motorized Outdoor Air Damper Only Menu Structure TEST AND BALANCE BLOWER DAMPER TEST AND BALANCE MSAV BLOWER CFM SETTINGS START AND STOP BLOWER SUMMARY DAMPER CALIBRATION CLOSE DAMPER VAV BLOWER OPEN ALL ZONE BOXES VAV BLOWER START VAV CALIBRATOIN BLOWER ON STATIC PRESSURE VAV CALIBRATOIN STATIC PRESSURE SETPONT D...

Page 17: ...N SET FREE COOLING SUPPLY SETPOINT Figure 17 Economizer Global Menu Structure TEST AND BALANCE BLOWER DAMPER TEST AND BALANCE MSAV BLOWER CFM SETTINGS START AND STOP BLOWER SUMMARY SELECT ECONOMIZER OPTION ENTHALPY OFFSET FREE COOLING SET FREE COOLING SUPPLY AIR SETPONT DAMPER CALIBRATION CLOSE DAMPER VAV BLOWER OPEN ALL ZONE BOXES VAV BLOWER START VAV CALIBRATOIN BLOWER ON STATIC PRESSURE VAV CAL...

Page 18: ... per the active alarm requirements Indicate the number of occurrences of an alarm in the past thirty 30 days See Table 11 CORE Control System Alarm and Event Codes on page 37 for alarm details ALARM HISTORY VIEW AND CLEAR ALARMS Figure 19 Alarm Menu Structure 9 2 2 Data Trending Trended data within the CORE controller is stored internally for up to two weeks and available in a user friendly format...

Page 19: ...ew the runtimes of the different system components Component Runtime The mobile application shall display hours of runtime for each component The precision of the measurement shall be hours minutes Runtime Cycles The mobile application shall display cycles of runtime by component Clearing of Runtime The mobile application shall support clearing of runtime on a component basis The available compone...

Page 20: ...LT COMPRESSOR 1 COMPRESSOR 2 COMPRESSOR 3 COMPRESSOR 4 CONDENSER FAN 1 CONDENSER FAN 2 CONDENSER FAN 3 CONDENSER FAN 4 FILTER DEHUMIDIFCATON POWER ON PRE INSTALL FREE COOLING OPERATION POWER EXHAUST STAGE 1 Figure 22 Runtimes Menu Structure ...

Page 21: ...ans heat status damper blower power exhaust and other service relay output and Crankcase Heater 1 through 4 SYSEM DATA SENSORS OUTPUTS INPUTS AND OUTPUTS LOCAL THERMOSTAT INPUTS SENSORS DIGITAL INPUTS SETPOINTS ADVANCED BACNET MS TP BACNET IP S BUS INPUTS WIRELESS SENSORS LOCAL INPUTS NETWORK INPUTS OUTPUTS COMPRESSOR REHEAT COIL OUTDOOR FANS HEAT STATUS DAMPER BLOWER POWER EXHAUST OTHER CIRCUIT 1...

Page 22: ...r tests Blower Speed Damper Position Power Exhaust Outdoor Fans 1 through 4 COMPONENT TEST COOLING STAGE 1 COOLING STAGE 1 2 3 OR 4 COMPRESSOR 1 2 3 OR 4 COMPRESSOR 2 2 3 OR 4 COMPRESSOR 3 2 3 OR 4 COMPRESSOR 4 2 3 OR 4 COOLING BLOWER DAMPER DAMMPER POSITION POWER EXHAUST COOLING STAGE 2 COOLING STAGE 3 COOLING STAGE 4 BLOWER SPEED AND CFM DAMPER POSITION AND DAMPER FEEDBACK STATUS OUTDOOR FAN FAN...

Page 23: ...e being used or e mailed There is also the option in this section to load a system profile from USB as well REPORT REPORT NAME FILE NAME SERVICE REPORT SYSTEM LOGS SYSTEM PROFILE USB STORAGE USER PROFILE MOBILE SAVE SHARE USB SAVE SHARE REPORT NAME FILE NAME MOBILE SAVE SHARE USB SAVE SHARE SAVE USER PROFILE LOAD USER PROFILE Figure 25 Report Menu Structure 9 3 3 Advanced Control The interface wil...

Page 24: ...rmware image from a W4 USB drive e Version Selectable The mobile application will allow the user to choose which version of the firmware in the USB drive shall be used f Confirmation Dialog The mobile application will present a confirmation dialog to the user before updating the CORE Unit Controller g Upgrade Time The mobile application should be able to upgrade the unitary controller firmware is ...

Page 25: ...25 REPORT CLOUD FIRMARE UPDATE AUTOMATIC CLOUD UPDATE ON OR OFF USB FIRMWARE UPDATE UPGRADE FROM USB ON OR OFF Figure 27 Firmware Update Menu Structure ...

Page 26: ...EED HIGH SELECT VENTILATOIN OPTION NONE BUILDING PRESSURE CONTROL DEMAND CONTROL VENTILATION SET POWER EXHAUST MODE BLOWER ON EXTERNAL ENABLE OCCUPIED ALWAYS SET ECONOMIZER TRAVEL SETPOINTS POWER EXHAUST SET BUILDING PRESSURE SETPOINT FRESH AIR TEMPERATING SET FRESH AIR SETPOINT SUMMARY SET BUILDING PRESSURE SETPOINT SET DEMAND CONTROL VENTILATION DAMPER DEHUMIDIFIER DISABLED BLOWER OCCUPIED PREVI...

Page 27: ...rect the user towards the install menu The mobile application shall provide a menu to run Install New M4 CORE Unit Controller Install new CORE Unit Controller will first confirm with the user if it is okay to Clear all Configuration If the user confirms that it is okay to Clear All Configuration the app shall ask the user if they are sure If the user confirms the menu directs the user towards the ...

Page 28: ...ation Description for their descriptions b LonTalk BACnet and L Connection These two new options are available when using these networks types that supplies a room occupancy signal in addition to the scheduled occupancy NOTE For L Connection the same two options are also available when using an optional room occupancy sensor Ifaroomoccupancysensorisnotphysically installed and configured for the ne...

Page 29: ...upied 1 space unoccupied 2 space occupied timed override Table 7 Blower Operation Schedule Manual Schedule Sensor Effective Blower Occupancy OCC Blower Mode Blower Operation 0 2 n a n a OCCUPIED AUTO CYCLES ON CONTINOUS 1 ON CONTINOUS 2 ON CONTINOUS 3 Cycles On On On 1 n a n a UNOCCUPIED AUTO CYCLES ON CONTINOUS 1 ON CONTINOUS 2 ON CONTINOUS 3 Cycles 3 255 0 0 2 255 OCCUPIED AUTO CYCLES ON CONTINO...

Page 30: ...d the M3 shall resume damper modulation 10 4 Free Cooling Compressor Lockout Mode and Low Ambient Set Point Go to SETTINGS RTU OPTION EDIT PARAMETER COOLING 285 FRCL COMP LCKOUT MD Default value is 2 Range is 0 to 2 0 Disable Compressor Lockout 1 Lockout Compressor if outdoor air is suitable regardless of outdoor air temperature 2 Lockout Compressor if outdoor air temperature is below Parameter 10...

Page 31: ... system Step 3 SINGLE ENTHALPY OPERATION ODE In the single enthalpy mode dampers open for free cooling when the outdoor enthalpy is less than the enthalpy set point Parameter 162 ECON FREECLENTH SP dampers will try to modulate discharge air temperature RT6 to Parameter 159 FREE COOL SUPPLY SP which has a default setting of 55 0 F 13 C a Go to SETUP INSTALL press SAVE until you get to the Configura...

Page 32: ...r interface a Connect a direct current ammeter as shown in figure 4 to measure current output of A7 or A62 b The reading will be between 4 and 20 ma and depends on outdoor temperature and humidity Refer to figure 3 to approximate reading Go to DATA SYSTEM DATA SENSORS OUTPUTS LOCAL INPUTS SENSORS LOCAL scroll down to INDOOR AND OUTDOOR ENTHALPY c If the meter reads zero check sensor wiring harness...

Page 33: ...n or meet required specifications Use the user interface to change Parameter 117 through 123 Go to SETTINGS RTU OPTIONS EDIT PARAMETER IAQ INPUT MODE Select a demand control ventilation mode with Parameter 134 Modes 3 and 4 will bring on the unit blower when demand control ventilation calls for maximum damper open and returns to auto blower when demand control ventilation damper returns to 0 The o...

Page 34: ...it Controller BACnet module on the other end terminations are ONLY at the ends of the chain Cable type twisted pair with shield 22 awg minimum Belden 88761 or 8761 Lennox 27M19 94L63 68M35 terminated terminated not terminated not terminated CONTROLLER ROUTER minated ated not terminated terminated per mfg instructions The configuration shown above has terminations on the unit controller BACnet modu...

Page 35: ...nches of water column Table 9 Abbreviations Abbreviation Definition LED Light emitting diode An indicator light found either as individual elements or grouped together as segments to form characters LP Low pressure LT Limit M4 CORE Unit Controller main controller board A55 MGV Modulating gas valve MSAV Multi Stage Air Volume OAC Outdoor air control OAS Outdoor air suitable for free cooling OAT Out...

Page 36: ...gets Mode Desired Airflow cfm PWM Cool High 1800 57 Cool Low 1300 31 Heat 2000 70 Ventilation 1200 27 Smoke 2000 70 Economizer Differential Pressure 2000 Supply Airflow cfm Damper Position Diff Pressure in H20 0 0 39 50 0 23 100 0 06 Outside Airflow Targets Minimum Outside Air Minimum DCV 200 cfm Maximum DCV 0 cfm Minimum CO2 700 ppm Maximum CO2 1200 ppm Alarm Status Log 143 04 03 2014 19 26 13 RE...

Page 37: ...an be recalled later NOTE Any references in the user interface referencing Advanced Airflow actually indicates SmartAirflow 13 2 Service Relays Selected alarms marked with in the following table result in the closure of the service relay contacts DO1 The contacts remain closed until the CORE Unit Controller resets or alarm condition is cleared and alarm status is read via explicit S BUS command Ot...

Page 38: ...ch compressor lockout and alarm will be cleared after the CORE Unit Controller reset High pressure switch compressor lockout and alarm will be cleared on termination of cooling demand Default is 3 occurrences and can be set between 1 and 7 occurrences 14 HIGH PRESS S7 OPEN COMP2 Compress is off Check charge fans or coil This feature is not support in Model L at this time NOTE On Ultra High efficie...

Page 39: ...menu to clear lockouts Number of occurrences is set using Parameter 99 max lo occurrences Default is 3 occurrences 26 LOW PRESS S98 OPEN COMP Compressor if off Check charge fans and coil 27 STRIKE3 LOW PRESS S98 OPEN COMP3 Compressor is off Check charge fans and coil Use service menu to clear lockouts Number of occurrences is set using Parameter 99 max lo occurrences Default is 3 occurrences 28 LO...

Page 40: ...reference delay Factory delay default is 300 seconds 50 PRIMARY HEAT1 LIMIT OPEN S10 Heat section 1 primary gas heat limit switch is open Check air flow air filter limit switch and wiring 51 STRIKE3 PRIMARY HEAT1 LIMIT OPEN S10 Heat section 1 primary gas heat limit switch is open Check air flow air filter limit switch and wiring Number of occurrences is reached 52 SECONDARY HEAT1 LIMIT OPEN S21 He...

Page 41: ...MP SENSOR If measurement of the discharge air temperature sensor is out of specified range including open short detection the alarm will be activated Alarm will automatically clear once in range condition is detected Check sensor and wiring 78 RETURN AIR TEMP SENSOR If measurement of the return air temperature sensor is out of specified range including open short detection the alarm will be activa...

Page 42: ...DE Check communication loss with network sensor or if CORE Unit Controller If NETWORK INTEGRATION is set to RTU STANDALONE MODE and backup sensor is set to RETURN AIR BACKUP While running in backup mode the unit controller will set this alarm The unit controller will return from Backup mode to Primary Main mode on a reset or after the Primary mode room Sensor is not in error or OR network communic...

Page 43: ...al EEPROM write error 114 INTERNAL PLL CLOCK ERROR Internal PLL clock error 115 TEST MODE UNIT TEST switch in test mode 116 TEST MODE AT RESET UNIT TEST switch in test mode at reset 117 HIBERNATION MODE To insure correct voltage phasing before startup use refrigerant pressure gauges to check proper compressor operation and arrow label for blower rotation 118 NO DISPLAY Display is not connected or ...

Page 44: ...reset CORE Unit Controller 130 VFD BYPASS ENGAGED VFD bypass mode Mode is engaged Blower may or may not be disengage 131 RESERVED 132 VFD BYPASS UNCONFIG VFD bypass mode has not been selected Unit operates as if bypass is not installed 133 RESERVED 134 LOW SUPPLY AIRFLOW Advanced Airflow enabled RTU indicates airflow target cannot be achieved Check cause of airflow reduction such as dirty filter c...

Page 45: ...to the CORE Unit Controller The alarm is immediately cleared and a history of the event is stored 177 NO MODEL NUMBER Missing model configuration data Run setup install and complete model number information 178 LOW SUMP SUPERHEAT 179 STRIKE3 LOW SUMP SUPERHEAT 180 DEFECTIVE CRANKCASE HEATER1 181 DEFECTIVE CRANKCASE HEATER2 182 SUCTION PRESSURE SENSOR 183 COMP1 SUMP TEMP SENSOR Alarm will occur whe...

Page 46: ...emperature trip switch is detected as closed Compressor will not restart until the corresponding temperature trip switch is closed and the minimum off delay has expired 193 STRIKE3 HIGH TEMP S7 OPEN COMP1 The unit controller will disable compressor operation lockout Check switch charge fans and coil Default is three occurrences Alarm will be automatically cleared after removal of cooling demand 19...

Page 47: ...d Temperature Sensor Circuit 3 has failed Liquid Temperature Sensor Circuit 3 has become dislodged 225 C4 LIQUID TEMP SENSOR Liquid Temperature Sensor Circuit 4 has failed Liquid Temperature Sensor Circuit 4 has become dislodged 226 C1 SAT SUCTION TEMP SENSOR Saturated Suction Temperature Sensor Circuit 1 has failed Saturated Suction Temperature Sensor Circuit 1 has become dislodged 227 C2 SAT SUC...

Page 48: ...Y CONTACTS DO1 ALARM CODE DISPLAY MESSAGE EVENT ACTION 243 UTEC VALVE FAULT LOCKOUT GV2 244 255 RESERVED 500 Error Reading USB Device Error Reading USB Device 501 USB Device not Mounted USB Device not Mounted 502 USB Device Full USB Device Full 503 Invalid DIN number Invalid DIN number received from M4 Indicates DIN incompatibility ...

Page 49: ...cooling or ventilation 9 MIN DAMPER LOW BLWR Minimum Damper Position During High Speed Blower Operation 0 0 100 Minimum damper position during low speed blower operation Use Parameter 132 during high speed blower operation 10 FREE CL STG UP DLY Free Cooling Blower Stage Up Delay 0 300 1800 Sec Applicable to Standard Efficiency 3 to 6 ton only Free cooling blower stage up delay Blower runs low spee...

Page 50: ...set point during smoke alarm 35 BLR STC PRES VT SP Constant Air Volume with Bypass Damper Static Pressure Set Point for Ventilation 0 1 5 w c Constant air volume with bypass damper static pressure set point for ventilation 36 BLR STC PRES HT SP Constant Air Volume with Bypass Damper Static Pressure Set Point for Heating 0 1 5 w c Constant air volume with bypass damper static pressure set point for...

Page 51: ...sor after a 20 second delay A value of 30 disables the low threshold or open alarm trap Electric Heating Parameters 58 HT ELEC WARMUP DLAY Electric Heat Warm up Time Delay for Economizer 0 60 136 Minutes Warm up time delay The time that the economizer is forced closed during warm up first occupied heat demand 60 HT ELEC BL OFF DLAY Electric Heat Blower Off Delay Set Point 0 System Dependent 300 Se...

Page 52: ...ces Service output activation Maximum gas valve sense occurrences stored before service output is energized NOTE Heating stage is not locked out 74 HT GAS STG UP TMR Gas Stage Up Timer 0 912 3600 Seconds Stage up timer The maximum time that lower stage runs before calling next heat stage Used in room sensor applications Disabled if set to 0 75 HT GAS STG DWN TMR Gas Stage Down Timer 0 0 3600 Secon...

Page 53: ... 3 31 Default may be altered at factory test 80 ºF Low ambient lockout for compressor 3 A value of 31ºF will disable low ambient lockout function Temperature setting must be greater than or equal to Parameter 86 and less than or equal to Parameter 88 88 COMP4 LO TMP LCKOUT Low Ambient Temperature Lockout for Compressor 4 31 Default may be altered at factory test 80 ºF Low ambient lockout for compr...

Page 54: ...ditrol reheat Conditions Blower must be energized Must be occupied At least one previous cooling demand 4 Relative Humidity measurement display No Supermarket or Humiditrol reheat 5 Humiditrol reheat Conditions At least one previous cooling demand 6 Humiditrol reheat Conditions Blower must be energized Must be occupied 7 Humiditrol reheat Conditions None 106 DEHUMID SETPOINT Dehumidification Set P...

Page 55: ...oling Y2 Adds all mechanical stages 2 Wired thermostat operation Two cooling stages and Units with Economizers Y1 Free Cooling Y2 adds first stage of mechanical 3 Wired thermostat operation Three cooling stages Y1 only first stage Y2 only second stage Y1 Y2 third stage NOTE Units with Economizers Y2 only adds first stage of mechanical Y1 Y2 adds first and second stage of mechanical 4 Discharge air...

Page 56: ...fresh air damper is closed to minimum position 121 DCV HI TMP OV ST CL Demand Control Ventilation Outdoor Air Control Hi Temperature Override Start Closing 31 75 132 F High outdoor air temperature where fresh air damper begins to close 122 DCV LO TMP OV FL CL Demand Control Ventilation Outdoor Air Control Low Temperature Override Full Closed 31 10 132 F Low outdoor air temperature where fresh air ...

Page 57: ...nd no blower AUTO ON 5 Outdoor air control with outdoor temperature limit 6 Outdoor air control with outdoor temperature limit 7 Building pressure control System 1 Parameters 137 OCC HEAT STPT Occupied Heating Set Point 40 Default may be altered at factory test 95 F Backup occupied heating set point Used if the communications link is lost for 5 minutes between the M3 and NCP Used only with room se...

Page 58: ...applications Differential temperature must be less than or equal to Parameter 145 145 COOL STAGE2 DIFFER Cooling Stage 2 Differential 0 1 3 F Cooling stage 2 differential Used only with room sensor applications Differential temperature must be greater than or equal to Parameter 144 and less than or equal to Parameter 146 146 COOL STAGE3 DIFFER Cooling Stage 3 Differential 0 1 5 3 F Cooling stage 3...

Page 59: ...he time when occupancy scheduler indicates occupied by the occupancy sensor indicates not occupied The 25 minimum is achieved by turning blower on for 30 minutes and off for 90 minutes 155 FREECOOL LOCKOUT SP Free Cooling Lockout Set Point 30 30 60 F Locks out free cooling when outdoor temperature is below the set value Setting value to 29 F disables free cooling lockout 156 FRESH AIR HEAT SP See ...

Page 60: ...tion This is the factory default setting Holds off compressor on Y2 call until damper has modulated to maximum position Parameter 131 FREE CL MAX DAMPER for three minutes After three minutes compressor starts and the free cooling setpoint is lowered to 45 F Damper is not locked at maximum open while compressor is on but modulates to maintain 45 F discharge air temperature When Y2 is satisfied comp...

Page 61: ...ring unoccupied period 176 DACH STAGE DEADBAND Discharge Air Control Heating Stage Deadband 5 5 20 F Discharge Air Control Heating dead band 177 DACH FAH STG UP TMR Discharge Air Control Heating Stage Up Time Delay 0 180 900 Seconds Discharge Air Control Heating and Fresh Air Heating stage up time delay 178 DACH FAH STG DN TMR Discharge Air Control Heating and Fresh Air Heating Control Stage Down ...

Page 62: ...wer on 4 On when heating demand 5 On when cooling demand 6 On when heating or cooling demand 7 System Relative Humidity A55_ P298_5 RH 8 System Indoor Air Quality A55_ P298_3 IAQ 9 System Outdoor Air Temperature A55_P267_1 2 OAT 10 Energy Recovery System 11 SCR Option for Electric Heat Algorithm Y for input sources 7 9 0 Hysteresis loop see sections 14 2 14 4 1 Window On when input is in range see...

Page 63: ...ng set point Parameter 159 202 DACC OAT RS ADJ SP Discharge Air Control Cooling Outdoor Air Temperature Cooling Reset Set Point 40 80 100 F Discharge Air Control Cooling outdoor air temperature cooling reset set point Also used to reset free cooling set point Parameter 159 203 DACC OAT RS PRP BND Discharge Air Control Cooling Outdoor Ambient Air Temperature Cooling Proportional Band 1 20 60 F Disc...

Page 64: ...ng reset proportional band 214 DACH RS LIMIT Discharge Air Control Heating Return Air Heating Reset Limit 5 10 20 F Discharge Air Control Heating reset limit This limits the total DACH reset allowed 215 EXH FN STG1 DAMP SP Exhaust Fan Stage 1 Damper Set Point 0 50 100 Exhaust fan stage 1 damper set point 216 EXH FN STG1 DAMP DB Exhaust Fan Stage 1 Damper Deadband 0 Default may be altered at factor...

Page 65: ...d Efficiency 3 to 6 ton units only 235 LO SP CFM ALARM EU Advanced Airflow Low Speed CFM Alarm Evaluation 0 1800 3600 Seconds Applicable to Standard Efficiency 3 to 6 ton units only 236 NO AIRFLOW ALARM EU Advanced Airflow No Airflow Alarm Evaluation 0 20 300 Count Applicable to Standard Efficiency 3 to 6 ton units only 237 OUTDOOR AIR TARGET Outdoor Air Target 0 0 750 CFM Applicable to Standard E...

Page 66: ...SET 0x00000080 Enable Supply Static Pressure Sensor Alarm ALGO_LO_STATIC_PRESSURE_ ALARM 0x00000100 Enable Low Outdoor Temp override of DCV OAC operation ALGO_LO_OAT_ DCV_OAC_OVERRIDE 0x00000200 Enable High Outdoor Temp override of DCV OAC operation ALGO_HI_OAT_ DCV_OAC_OVERRIDE 0x00000800 Enable Free Cooling Blower Stage Up 305 LON HEARTBEAT TIME LonTalk Heartbeat Time 0 100 10 000 Seconds Heartb...

Page 67: ...taged Output A 2 Otherwise off 11 DI2 on PID set point B 1 DI3 on Staged Output A 2 Otherwise off 12 Reserved 1 DI3 on M3 doesn t matter 2 DI2 on M3 is off 331 GP A02 SP A General Purpose A02 Set Point A 0 0 100 Analog output channel 2 set point A 332 GP A02 SP B General Purpose A02 Set Point B 0 0 100 Analog output channel 2 set point B 333 GP A02 STG A General Purpose A02 Stage A 0 0 100 Analog ...

Page 68: ...on PID set point B 1 DI3 on PID set point A 2 Otherwise off 10 DI2 on PID set point B 1 DI3 on Staged Output A 2 Otherwise off 11 DI2 on PID set point B 1 DI3 on Staged Output A 2 Otherwise off 12 Reserved 1 DI3 on M3 doesn t matter 2 DI2 on M3 is off 345 GP A03 SP A General Purpose A03 Set Point A 0 0 100 Analog output channel 3 set point A 346 GP A03 SP B General Purpose A03 Set Point B 0 0 100 ...

Page 69: ...ture Parameter 362 3 F fixed dead band or compressor 1 is turned on 2 On when Occupied 3 On when blower on 4 On when heating demand 5 On when cooling demand 6 On when heating or cooling demand 7 System RH use Parameter 361 8 System IAQ use Parameter 360 9 System OAT use Parameter 362 10 On based on GP3 Temperature Sensor 1 use Parameter 362 11 On based on GP3 Temperature Sensor 2 use Parameter 362...

Page 70: ... temperature is Parameter 369 and P 371 seconds have passed with compressor 1 off Off when outdoor air temperature Parameter 369 3 F fixed dead band or compressor 1 is turned on 2 On when Occupied 3 On when blower on 4 On when heating demand 5 On when cooling demand 6 On when heating or cooling demand 7 System RH use Parameter 368 8 System IAQ use Parameter 367 9 System OAT use Parameter 369 10 On...

Page 71: ...ed used for low heating for certain P volt models 385 BACNET CS COEXIST This will allow the CS8500 to act as a slave to the CORE Unit Controller and connect via BACNET 0 0 1 Option 0 Disabled default Required setting for connection with ICON system 1 Enabled BACNET CS8500 can co exist 386 VAV SMK PRESS SP VAV supply static pressure set point during smoke operation 0 1 5 in w c 387 VAV VT PRESS SP ...

Page 72: ...H FN SMK PRES SP Exhaust Fan set point for PID control 0 50 0 50 0 50 in w c 406 EXH FN MIN SPEED Exhaust Fan PID loop min speed 0 50 100 407 EXH FN MAX SPEED Exhaust Fan PID loop max speed 0 100 100 408 EXH FN MANUAL RESET Exhaust Fan PID loop manual reset value 0 100 100 409 EXH FN P CONTSTANT Exhaust Fan PID loop proportional constant 0 20 127 Counts 410 EXH FN I CONSTANT Exhaust Fan PID loop i...

Page 73: ...e Parameter Short Description Control Value Units Description Min Default Max 416 BLOWER COOL OUTPUT Blower Cooling High 20 Depends on equipment 100 Applicable to High Efficiency 3 to 5 ton units only Blower staged percentage output high speed used for high cooling or ventilation ...

Page 74: ...74 15 CORE Control System Inputs and Outputs 15 1 CORE Unit Controller A55 Input Outputs Table 13 J304 S Bus Table 14 J299 Digital Input ...

Page 75: ...75 Table 15 J297 TSTAT Inputs and Service Relays Table 16 J298 Analog Sensors Table 17 J378 Duct Sensors ...

Page 76: ...76 Table 18 J379 Ultra Condenser Table 19 J380 Smart Air Table 20 J381 Indoor Blower and Outdoor Fan Variable Speed Table 21 J382 All Evaporators ...

Page 77: ...77 Table 22 J383 Ultra Evaporators Table 23 J384 Economizer ...

Page 78: ...78 Table 24 J385 All Condensers Table 25 J386 Refrigerant Loss Detection Table 26 J387 Options Table 27 J388 Pressure Switches ...

Page 79: ...79 Table 28 J389 Compressors 1 and 2 Table 29 J390 Relays Table 30 J391 Compressor 2 Stage Table 31 J392 Blower ...

Page 80: ...80 Table 32 J393 Gas Heat Table 33 J393 Electric Heat Table 34 J394 ReHeat Table 35 J388 C Box ...

Page 81: ...81 Table 36 J389 C Box Table 37 J395 Power In Table 38 J358 MODUS Vs COMPR Table 39 J413 Modbus ...

Page 82: ...AT3 GND 3 HEAT3 Heat 3 24VAC OUT 6 EH_LIMIT Elec Ht Limit Sw Rtrn SW 24VAC 2 EH_LIMIT Elec Ht Limit Sw 24VAC OUT 5 24VAC_EXT 24 VAC Power 24VAC OUT 1 GND Ground 24VAC_EXT GND 4 2 1 3 5 6 7 8 1 2 3 4 5 6 7 8 W HT GRY GRY RED BRN W HT GRY W HT J396 Table 41 P396 Gas Heat J396 Table 42 P397 Compressor Fans J397 Table 43 P398 Compressors 3 and 4 J398 ...

Page 83: ... Table 44 P399 Pressure Switches 3 and 4 J399 Table 45 P400 24VAC J400 Table 46 P401 All Evaporators J401 Table 47 P402 Ultra Evaporators J402 Table 48 P403 Options J403 Table 49 P404 All Condensors J404 ...

Page 84: ...G Lennox Par t 106505 01 TE VAL U LOK BOARD HEADERS CONNECTI NG PLUG HOUSI NGS CIRCUITS BOARD HEADER DESIGNATION BOARD HEADER OEM PART TE CONNECTING PLUG DESIGNATION LENNOX PART CONNECTING PLUG OEM PART TE COLOR 8 J396 2029138 8 P396 106509 04 2029094 8 RED 10 J397 1 2029142 0 P397 106510 05 1 2029100 0 BLUE 4 J398 1586040 4 P398 106507 02 1969614 4 WHITE 8 J399 2029142 8 P399 106510 04 2029100 8 ...

Page 85: ...85 Table 54 J406 A12 M4 Control J406 A12 Table 55 J374 Versions 1 through 4 ...

Page 86: ...86 Table 56 J10 GV1 S18 J10 S18 Table 57 J408 GV1 S47 J408 Table 58 J412 MODUS 2 Table 59 J411 MODUS 1 ...

Page 87: ...Part Numbers 15 4 W4 Control Table 62 W4 Control W4 Board BACnet Wi Fi Antenna Wi Fi Antenna Bluetooth Antenna Connector 1 Connector 2 Connector Ethernet Connector 1 Ethernet Connector 2 USB M4 Connector bottom side Bluetooth Switch Config Reset Switch Wi Fi Switch Battery ...

Page 88: ...ilable LonTalk SETUP NETWORK INTEGRATION NETWORK WIZARD LONTALK Setup information to be verified with integrator Follow wiring instructions including network termination XIF file available Neuron ID on sticker Expert level LonTalk service manual available Damper SETUP TEST BALANCE DAMPER Verify damper minimum positions Refer to Economizer section of manual for more detail Local Mode SETUP NETWORK ...

Page 89: ...1 5 A55 J 299 DI 1 R FI RE ALARM CONTACT SUPPLI ED BY OTHERS C P299 J299 P387 J387 R J297 P297 J298 P298 A55 J 298 A55 J 298 A55 J 298 2 3 4 538078 01 Rev 0 538078 01 HEATING SECTION A COOLING SECTION B WIRING DIAGRAM FLOW SECTION B3 COOLING SECTION C ACCS SECTION D ACCS CTRL SM OKE DETECT A173 5 6 SENSOR 1 SENSOR 2 7 7 7 S52 I ON TEM P R C G Y1 C Y1 Y2 R C I AQ R C I AQ R I AQ I AQ C SUPERM ARKET...

Page 90: ...use harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equip ment off and on the user is encouraged to try to correct the interference by one of the following mea sures Reorient or relocate th...

Page 91: ...91 ...

Page 92: ...mpers 4 L L CONNECTION 36 LED Operation Indicators 5 LEDs 4 Low Ambient Set Point 31 M Menu Selection Overview 8 Minimum Damper Position 31 MODBUS 4 Motorized Outdoor Air Damper 32 O Outdoor Air Suitable for Free Cooling 31 Overview 3 P Parts and Kits 38 Phase Voltage Detection 39 Q Quick Start Guide 90 S Service Relays 39 System Status Screen 7 System Status Screen Unit Operation 8 T Thermal Prot...

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