Johnson Controls GVA Series Start-Up & Operation Download

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5586996-JSG-A-0120

25–50 Tons

Premier

Rooftop Units

R-410A

LD26877

Table of Contents

Nomenclature ...................................................................... 4

Pre Start-Up Checklist ......................................................... 7

Start-Up ............................................................................... 9

Long Term Storage ......................................................... 9

Checking System Prior to Initial Start (No Power) ......... 9

Unit Checks (Power Applied) ....................................... 10

Initial Start-Up .............................................................. 16

Refrigerant Charge ............................................... 16

Checking Sub-Cooling and Superheat.................. 16

Leak Checking ...................................................... 17

Gas Heat Models .................................................. 17

Phase Monitor Adjustment .................................... 20

Commissioning Mode................................................... 20

Air Balancing Wizard .................................................... 20

Start-Up Wizard ............................................................ 24

Start-Up Wizard Sequence ................................... 26

Sequences of Operation .................................................... 30

Control Boards ............................................................. 30

Variable Frequency Drives (VFDs) ............................... 37

Unit Type ...................................................................... 38

Occupancy Mode ......................................................... 38

Morning Warm-up/Cool Down ............................... 38

Coast..................................................................... 38

Remote Safety Shutdown ............................................ 39

Low Voltage Monitoring ................................................ 39

Supply Fan Operation .................................................. 39

Supply Fan Alarm.................................................. 39

MZVAV Supply Fan ............................................... 39

SZVAV Supply Fan ............................................... 40

Redundant Supply Fan VFD ................................. 40

Cooling Operation ........................................................ 40

MZVAV Cooling Operation .................................... 40

SZVAV Cooling Operation ..................................... 42

Compressors and Refrigeration Circuits ............... 42

Compressor Staging Sequences .......................... 44

Condenser Systems and Fans.............................. 48

Dehumidification (Hot Gas Reheat)

...................... 49

Economizer ........................................................... 51

Heating ......................................................................... 52

Gas Heating .......................................................... 52

Electric Heating ..................................................... 56

Hydronic Heating .................................................. 56

MZVAV Heating Operation .................................... 56

SZVAV Heating Operation .................................... 57

Ventilation..................................................................... 58

Ventilation Sequences .......................................... 58

Low Mixed Air Temperature Limiting ..................... 58

Demand Control Ventilation .................................. 58

Continuous Ventilation .......................................... 59

Pre-Occupancy Purge........................................... 59

Humidification............................................................... 60

Humidification Sequence

...................................... 60

Exhaust System ........................................................... 60

Modulating Exhaust Fan ....................................... 60

Modulating Exhaust Damper with Fan .................. 60

External Control .................................................... 60

Return Fan ................................................................... 60

Return Fan Discharge Pressure ........................... 61

Supply Fan Airflow Tracking

.................................. 61

Energy Recovery Wheel .............................................. 61

Single Speed Energy Recovery Wheel ................. 61

Variable Speed Energy Recovery Wheel .............. 61

Ultraviolet Lights........................................................... 61

Smoke Control ............................................................. 62

Purge .................................................................... 62

Pressurization ....................................................... 62

Depressurize ......................................................... 62

START-UP

OPERATION

Summary of Contents for GVA Series

Page 1: ...dundant Supply Fan VFD 40 Cooling Operation 40 MZVAV Cooling Operation 40 SZVAV Cooling Operation 42 Compressors and Refrigeration Circuits 42 Compressor Staging Sequences 44 Condenser Systems and Fans 48 Dehumidification Hot Gas Reheat 49 Economizer 51 Heating 52 Gas Heating 52 Electric Heating 56 Hydronic Heating 56 MZVAV Heating Operation 56 SZVAV Heating Operation 57 Ventilation 58 Ventilation...

Page 2: ...FD Field Parameters 37 Table 18 Compressor Numbering 43 Table 19 Compressor Layout 43 Table 20 Compressor Motor Protection 47 Table 21 Saturated Liquid Line Temperature Setpoints and Values 48 Table 22 Gas Heating Stages and Turndown Ratios 52 Table 23 Staged Gas Heating Faults List 53 Table 24 Modulating Gas Heating Faults List 55 Table 25 Electric Heating Steps 56 Table 26 Menus and Submenus 64 ...

Page 3: ...ty Chain Wiring 46 Figure 19 Low Pressure Cutout Switch Wiring 46 Figure 20 Active DAT Setpoint when Unit Is In Idle Mode 50 Figure 21 Active EAT Setpoint Based on Humidity Level 50 Figure 22 HGRH Schematic 51 Figure 23 Effective Indoor Air Quality 59 Figure 24 Status Menu 63 Figure 25 Alarms Menu 63 Figure 26 Alarm Log Menu 63 Figure 27 Summary Menu 63 Figure 28 Commission Menu 63 Figure 29 Contr...

Page 4: ...3Ph 60 Hz Single Point Terminal Block H 460 V 3Ph 60 Hz Dual Point Terminal Block J 460 V 3Ph 60 Hz Single Point Non Fused DISC K 460 V 3Ph 60 Hz Single Point Terminal Block 65KA SCCR L 460 V 3Ph 60 Hz Dual Point Terminal Block 65KA SCCR M 460 V 3Ph 60 Hz Single Point Fused DISC 65KA SCCR N 575 V 3Ph 60 Hz Single Point Terminal Block P 575 V 3Ph 60 Hz Dual Point Terminal Block Q 575 V 3Ph 60 Hz Si...

Page 5: ...d Shaft Grounding Ring Digits 24 Return Exhaust Fan Drive A None B K RPM Digit 25 Evaporator Options G Aluminum Fin Evaporator with SST Drain Pan H Aluminum Fin Evaporator with SST Drain Pan with Condensate Overflow Switch J E Coat Aluminum Fin Evaporator with SST Drain Pan K E Coat Aluminum Fin Evaporator with SST Drain Pan with Condensate Overflow Switch L Copper Fin Evaporator with SST Drain Pa...

Page 6: ... and MAP and Building System Interface Board Y Touchscreen with MAP with BACnet IP and Building System Interface Board Digit 35 Indoor Air Quality IAQ Options 0 None 1 Ultraviolet UV Lights 2 Carbon Dioxide CO2 Sensors Demand Controlled Ventilation 3 UV Lights CO2 Sensors Demand Con trolled Ventilation Digit 36 Gas Heat Shipped Loose Kits 0 None 1 Gas Heat Side Penetration 2 Gas Heat Bottom Penetr...

Page 7: ...AV boxes are verified as operational b Discharge air static pressure transducer tubing is installed in the appropriate location 8 Single zone VAV SZVAV units check whichever option is applicable a A NetSensor is connected to the SA bus on the main control board b The BAS is communicating a zone temperature to the unit 9 Exhaust return fan units a Building static pressure transducer tubing is insta...

Page 8: ...Johnson Controls Premier rooftop unit and verified the pre start up checklist is complete and the unit is ready to be started up by an approved technician Verified by Date With reference to the terms of the above contract we are requesting the presence of your Johnson Controls Authorized Representative at the job site on ____ ____ ____ to start the system and instruct operating personnel Please co...

Page 9: ...e bottom of the cover to set the indicating pointer exactly on the zero mark NOTE The high and low pressure taps must both be open to atmosphere in order to make the zero adjustment 19 Verify proper condensate drain trap installation Fill traps with water prior to unit start up Figure 1 20 Verify the condensate float switch is located just before the top of the drain pan Adjust if necessary 21 Che...

Page 10: ...nstalled the suction and discharge pressures can be monitored via the unit controller d If the optional suction and discharge pres sure transducers are not installed pressures must be monitored with a manifold gauge connected to the service valves located on the suction and discharge lines 9 Check the compressor oil level to ensure that there is no liquid refrigerant in the lower shell of the comp...

Page 11: ... Coil High Capacity Std Efficiency and Std Capacity High Efficiency 0 21 0 30 0 40 0 51 0 64 0 77 0 91 50 Ton Evaporator Coil Std Capacity Std Efficiency 0 21 0 30 0 40 0 51 0 64 0 77 0 91 Evaporator Coil High Capacity Std Efficiency and Std Capacity High Efficiency 0 25 0 35 0 47 0 61 0 76 0 92 1 09 25 30 Ton Hot Gas Reheat HGRH Coil 0 11 0 13 0 27 0 39 0 53 40 50 Ton HGRH Coil 0 18 0 25 0 33 0 4...

Page 12: ...1 Rigid Filter Rack MERV 14 Rigid Filters with 2 inch MERV 8 Pre Filters 0 19 0 20 0 28 0 35 0 43 Vertical Filter Rack 4 inch MERV 8 Filters 0 03 0 03 0 06 0 09 0 12 40 50 Ton Angled Filter Rack 2 inch Throwaway Filters 0 06 0 08 0 09 0 11 0 13 0 15 0 17 Angled Filter Rack 2 inch MERV 8 Filters 0 06 0 08 0 10 0 12 0 15 0 18 0 21 Rigid Filter Rack MERV 15 Bag Filters with 2 inch MERV 8 Pre Filters ...

Page 13: ...SP 2 5 TSP 3 0 TSP 3 5 TSP 4 0 TSP 4 5 TSP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 5 000 746 1 12 855 1 68 964 2 30 1068 3 05 1165 3 79 1256 4 58 1342 5 42 1424 6 15 6 000 816 1 41 906 2 01 997 2 68 1088 3 36 1178 4 18 1265 5 09 1348 5 99 1426 6 88 7 000 894 1 74 974 2 44 1051 3 14 1129 3 89 1207 4 70 1285 5 51 1362 6 46 1437 7 51 8 000 978 2 11 1049 2 90 1119 3 70 1186 4 5...

Page 14: ...6 92 1429 18 55 1477 20 21 1524 21 90 9 000 1218 12 91 1276 14 55 1331 16 23 1383 17 95 1434 19 69 1483 21 47 1530 23 27 10 000 1221 13 64 1279 15 34 1334 17 10 1387 18 90 1438 20 74 1487 22 62 1535 24 52 11 000 1224 14 44 1282 16 18 1338 17 98 1391 19 84 1442 21 75 1491 23 70 1539 25 70 12 000 1227 15 32 1285 17 10 1340 18 94 1394 20 83 1445 22 78 1495 24 79 1542 26 85 13 000 1232 16 25 1289 18 0...

Page 15: ...P RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 5 000 878 2 24 976 3 01 1070 3 86 1158 4 81 6 000 835 1 96 936 2 76 1026 3 60 1110 4 49 1191 5 43 7 000 903 2 42 1000 3 37 1085 4 30 1163 5 26 1237 6 28 8 000 872 1 92 976 2 96 1066 4 04 1149 5 11 1224 6 18 1294 7 26 9 000 955 2 40 1051 3 61 1137 4 78 1215 6 00 1288 7 21 1356 8 40 10 000 1042 2 97 1127 4 35 1211 5 63 1285 6 96 1354 8 31 1420 9 66 1...

Page 16: ...sted on the unit nameplate Refrigerant Charge This rooftop unit comes fully charged from the factory with refrigerant R 410A as standard Refer to the unit nameplate for the factory charge Checking Sub Cooling and Superheat An R 410A temperature and pressure chart lists the associated saturation temperature in one column with the associated pressure in another column As a re sult only one temperatu...

Page 17: ...uring the initial operating period no safeties trip and the unit controls are properly functioning the rooftop unit is ready to be placed into operation Gas Heat Models WARNING ELECTRICAL SHOCK FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly as well as improper servicing can result in dangerous opera tion serious injury death or property damage Before servicing disconnect all el...

Page 18: ...are tight and securely connected to the components such as the ignition control flame sensor gas valve rollout switches and igniter The gas heat start up sequence begins with a 30 sec ond pre purge The next step in the sequence is clos ing the air proving switch The heat section has a combustion air proving switch This switch must close before the ignition sequence can initiate If the air prov ing...

Page 19: ...side the burner There should be little yellow tipping of the flame There may be some smoke through the flue due to tooling oil burning off of the heat exchanger tubing Manifold Staged Gas Pressure Adjustment Small adjustments to the manifold gas pressure can be made by following the procedure outlined below Refer to Figure 2 for the high and low fire pressure regulator adjustment locations HIGH FI...

Page 20: ... ac tive and logged during commissioning mode When a compressor is manually turned on a condens er fan in the associated refrigeration circuit is automati cally turned on This is to protect the compressor from a high pressure condition See Commission Commissioning Mode Air Handler Cooling and Heating menus in Table 28 on page 71 Air Balancing Wizard The air balancing wizard is a grouping of config...

Page 21: ...and to be overridden to this adjusted value when the supply fan output override mode point is set to software This point is only displayed on this balancer view Y Fresh Air Intake Value This input is the current outside airflow through the outside airflow station N Fresh Air Intake Setpoint This input is the current outside airflow setpoint Y Fresh Air Intake Max Sensor Range This input is the cur...

Page 22: ...rom user interface or MAP Hardware Manually Override From Potentiometer on Analog Input Set back to none to release the override command Y Reutrn Fan Override Position This input allows the return fan VFD to be overridden to this adjusted value when the return fan override mode point is set to software Y Return Fan Discharge Pressure This input is the current return fan discharge pressure N Return...

Page 23: ...ilding Pressure Setpoint See Return Fan View Y Exhaust VFD View3 Air Balancing Mode See Supply Fan View Y Unit Enable See Supply Fan View Y Exhaust Fan VFD Command This output is the current output to the exhaust fan VFD N Exhaust Fan Override Mode This input allows the exhaust fan VFD command to be overridden None No Override Software Position Override from user interface or MAP Hardware Manually...

Page 24: ...ulating damper is for a constant speed fan with a modulating damper Variable frequency fan is for a VFD fan with a barometric damper Twinning Enabled The twinning feature is enabled or not represented If twinning is enabled the sequence assumes there is an isolation damper Cooling SW Ena This enable input allows the start up wizard to run the cooling checks when the main enable input is set to ena...

Page 25: ...e from each leg of incoming power SF Lx Amps These three inputs are the user entered amperage from each phase of the supply fan power Output Signals Definitions Wizard Running This output indicates if the start up wizard is running any test Continue Presence This signal is used as the presence indication point for the continue option that the technician needs to set to move through checks Start Up...

Page 26: ... Cmd This is the condenser fan output for one condenser fan It stays on as long as a compressor is on Condenser Fan Speed This is the condenser fan speed output that is 100 when a condenser fan is operating LL Tempx Result This output is the liquid line temperature saved at the time of the circuit charge check Suction Tempx Result This output is the suction line temperature saved at the time of th...

Page 27: ... the start up wizards runs the following exhaust damper checks The unit controller commands the exhaust air damper to 50 displays that the damper is open ing to half then waits 85 seconds When the 50 damper position feedback value is 50 10 the unit controller moves to the next step Otherwise the unit controller displays that the current test has failed The damper test is reported as failed and the...

Page 28: ...eived within 30 seconds the supply fan check is recorded as passed Otherwise the supply fan is stopped and the sup ply fan check is recorded as failed No further start up wizard steps are permitted until the supply fan check passes If the supply fan status is lost during any subse quent start up wizard steps all unit operations are immediately terminated and the start up wizard stops The user reco...

Page 29: ...mmand to 100 stage 1 only waits 60 seconds and then asks the user Check Ok When the user does not answer the question within another 60 seconds the heat stage X is stopped the heat stage X check is record ed as failed and the start up wizard skips to the next electric heat stage When the user answers the question with yes the heat stage X is marked as passed and the start up wizard starts the next...

Page 30: ... during operation both low and high fire stage X are stopped the unit controller commands the modulating gas heat command to 0 Furnace 1 only low or high fire stage X check is recorded as failed and the start up wizard skips to the next furnace test The unit controller cycles through each modulated gas furnace recording the pass fail for each stage The results are compiled into a report and saved ...

Page 31: ...igure 8 The board must be ordered with the unit or is automatically installed when an option is ordered that requires it Modulating gas heat board Figure 9 on page 34 Staged gas heat board Figure 10 on page 34 Field control wiring MUST be a minimum 20 AWG and should contain a shield Consult the wiring diagrams shipped with the unit or use the RTUToolkit app to scan the QR code on the unit nameplat...

Page 32: ...denser Board 2 DIP Switch ON ON NOTE There are two condenser boards installed On the control board panel condenser board 1 is above board 2 1 LD27998 Figure 6 Condenser Boards Table 15 Options Board Field Terminal Points Callout Name Description IO Type IO Number Pin 1 DAP SP Discharge Air Static Pressure Setpoint AI 7 W25 2 DAT SP Discharge Air Temperature Setpoint AI 8 W21 1 2 LD27996 Figure 7 O...

Page 33: ...n Damper 2 Status BI 3 W25 11 SMOKE1 S Smoke Sequence 1 Status BI 4 W24 12 SMOKE2 S Smoke Sequence 2 Status BI 5 W22 13 SMOKE3 S Smoke Sequence 3 Status BI 6 W21 14 G FAN G Fan Thermostat Input BI 7 W53 15 Y1 LOWCOOL Y1 Low Cool Thermostat Input BI 8 W55 16 Y2 HIGHCOOL Y2 High Cool Thermostat Input BI 9 W52 17 W1 LOWHEAT W1 Low Heat Thermostat Input BI 10 W51 18 W2 HIGHHEAT W2 High Heat Thermostat...

Page 34: ...Johnson Controls 5586996 JSG A 0120 Start Up Operation Guide 34 LD28372 Figure 9 Modulating Gas Heat Control Board LD28373 Figure 10 Staged Gas Heat Control Board ...

Page 35: ...Johnson Controls Start Up Operation Guide 5586996 JSG A 0120 35 Operation LD28043 Figure 11 Field Wiring to Building System Interface Board ...

Page 36: ...Johnson Controls 5586996 JSG A 0120 Start Up Operation Guide 36 LD28044 Figure 12 Field Wiring to Options Board LD28044 Figure 13 Field Wiring to Main Control Board ...

Page 37: ... Condenser Fan ERW 1 20 Motor Power Motor Specific Motor Specific Motor Specific Motor Specific Motor Specific 1 22 Motor Voltage Motor Specific Motor Specific Motor Specific Motor Specific Motor Specific 1 24 Motor Current Motor Specific Motor Specific Motor Specific Motor Specific Motor Specific 1 25 Motor Nom Speed Motor Specific Motor Specific Motor Specific 1140 1140 3 02 Min Reference 0 0 0 ...

Page 38: ...into occupied mode Cool ing runs until 5 minutes pass and the operational zone temperature is below the morning cool down setpoint or the early start period expires The control goes into occupied mode thereafter Optimal Start Historical data operational zone temperature OCC setpoint and OAT determine when optimal start be gins The optimal start time is always within the same calendar day The contr...

Page 39: ...ol of the supply fan is different depending on the unit type Supply Fan Alarm All rooftop units have an air proving switch APS The MZVAV configured units also have a factory installed duct static pressure transducer The APS provides proof of operation for the supply fan Once the supply fan is started the APS has 60 sec onds to close When the APS does not close within 60 seconds the following happe...

Page 40: ... setpoint Discharge Air Temperature Reset Rooftop units configured for MZVAV operation have the option to reset the active DAT setpoint via one of five methods These five different methods allow the unit to meet almost any engineer customer specification SZVAV Supply Fan When the unit type is set to SZVAV the supply fan has a VFD When continuous ventilation is user enabled the sup ply fan runs whe...

Page 41: ... value the user wants for the DAT ZT Setpoint for Low DAT When the ZT is equal to greater than this temperature the unit controller regulates to the DAT low setpoint ZT Setpoint for High DAT When the ZT is equal to less than this temperature the unit controller regulates to the DAT high setpoint When the current ZT is somewhere between the ZT setpoints for low and high the unit controller regulate...

Page 42: ... an active cool ing mode The unit controller regulates the DAT setpoint based on the ZT demand The supply fan operates at the SZVAV cooling minimum speed user adjustable When the DAT setpoint reaches the cooling DAT lower setpoint for 5 minutes the unit controller holds the DAT setpoint at the cooling DAT lower setpoint At this time the supply fan speed starts to increase based on ZT demand Thermo...

Page 43: ... 5 7 5 15 0 50T HE Danfoss VSD Tandem 17 5 12 29 5 Tandem 10 10 20 0 25T HC Copeland Single 10 NA 10 0 Tandem 5 7 5 12 5 30T HC Copeland Tandem 8 5 5 5 14 0 Tandem 7 7 14 0 40T HC Copeland Tandem 13 7 20 0 Tandem 10 8 5 18 5 50T HC Copeland Tandem 8 5 15 23 5 Tandem 7 5 15 22 5 NOTES VSD Variable Speed Drive SE Standard Efficiency HE High Efficiency HC High Capacity NA Not Available VSD Tandem Com...

Page 44: ...rigeration system Temporarily increasing the speed of the variable speed drive compressor helps bring the trapped oil back to the variable speed drive compressor The temporary speed boost can be triggered in one of two ways Field changes to the VFD programming should not be required Any field changes to the factory programming must be approved through the product technical sup port team Compressor...

Page 45: ...ompressor Please refer to Table 20 for a list of compressors with motor protec tion modules Compressors without compressor motor pro tection modules have internal overloads in the motor windings The internal overloads are not a part of the safety chain The LPCO switch is not part of the safety chain It is a separate input to the appropriate condenser board The LPCO is ignored for the first 60 seco...

Page 46: ...Johnson Controls 5586996 JSG A 0120 Start Up Operation Guide 46 LD28002 Figure 18 Safety Chain Wiring CONDENSER BOARD 1 CONDENSER BOARD 2 LD28010 Figure 19 Low Pressure Cutout Switch Wiring ...

Page 47: ... alarm and disables the smallest HP compressor of that circuit Logs the current OAT at the time of the liquid line pressure alarm Recalculates the compressor staging and at tempts to continue supply DAT at the active DAT cooling setpoint When the liquid line pressure is greater than the liquid line high pressure limit after 60 seconds the unit controller Disables the smallest HP compressor still i...

Page 48: ...to remove heat from the refrigerant and condense the high pressure high tem perature gas to a high pressure high temperature liquid Ensuring that all the refrigerant is condensed to a liquid is critical for the proper operation of the overall com pressor system The unit uses different combinations of factory installed condenser fans both single speed and variable speed to accomplish the task of co...

Page 49: ...id line temperature reaches 110 0 F the condenser fan VFD speed is 100 At any saturated liquid line temperature between 80 110 0 F the condenser fan VFD speed is somewhere between 15 and 100 When low ambient operation is NOT enabled on a cir cuit the lower range of the OAT cooling enable set point is 45 0 F When low ambient operation IS enabled on a circuit the lower range of the OAT cooling enabl...

Page 50: ...5 minute timer expires the HGRH bleed valve opens Return Air Temperature DAT Setpoint Satisfied Mode Dehumidification Effective Cooling DAT Setpoint Effective Cooling Changeover Setpoint 1 5 F Effective Cooling Changeover Setpoint 0 5 F Return Air Temperature LD28011 Figure 20 Active DAT Setpoint when Unit Is In Idle Mode Dehumidification Sequence The unit controller continuously monitors a RH val...

Page 51: ...h use the outside air damper in their respective se quences There are four economizer options that can be in stalled dry bulb singly enthalpy dual enthalpy and differential dry bulb Changeover Method The unit can be ordered with one of the three econo mizer options Dry Bulb Measures the dry bulb temperature of the outside air to determine if conditions are suit able for economizer operation Single...

Page 52: ...nit controller continuously monitors all the tem perature and humidity sensors installed and determine which economizer method to use depending on the re liability of the sensors For example if the unit was ordered as a dual enthal py economizer and the return air humidity sensor be comes unreliable the unit controller starts to control the economizer in single enthalpy Heating The rooftop unit of...

Page 53: ...he heating operation when a heating de mand still exists After terminating the run cycle the 2 stage gas valve closes and the inducer is controlled to the light off setting for a 45 second post purge cycle After completing the post purge cycle the control ler enters the off cycle In the off cycle all outputs are de energized but all safeties are still monitored Table 23 Staged Gas Heating Faults L...

Page 54: ...burner is in lockout 12 GREEN YELLOW Burner states PURGE split burner is in lockout 13 GREEN YELLOW Prime burner is running burner states GAS_ON WARMUP RUN Split burner is in lockout None None Board not receiving 24 volts Modulating Gas Heat The following sequence refers to the modulating burner only or burners 1A and 1B which are arranged in a split manifold design Any other burners 2 or 3 are co...

Page 55: ...er starts staging on other burners 2 3 or 1B Table 24 Modulating Gas Heating Faults List LED Display Diagnostic Code Type Description 888 1 Lockout Board failure also during power up OFF 2 Status UP mode burner state OFF Pur 3 Status UP mode burner state Purge 16n Status UP mode burner state Ignition HEA Status UP mode burner state Warm up run Status UP mode burner state Run rEt 4 5 Status UP mode...

Page 56: ...he load Red LED 2 flashes Main voltage loss 3 flashes Monitoring alarm load loss SCR open circuit SCR short circuit 4 flashes SCR internal fault ON steady SCR over temperature Hydronic Heating The rooftop unit can be ordered with optional factory installed hot water or steam coils Both hot water and steam coil options can be either low heat or high heat When hot water or steam coils are installed ...

Page 57: ...able they are used in order of priority BAS input times out after 15 minutes when the value is not updated NetSensor Zone temperature sensor Return air temperature Staged Gas Heat When the operational zone temperature is less than the zone heating setpoint the unit enters an active heating mode The unit controller regulates the DAT setpoint based on ZT demand The sup ply fan is operated at full sp...

Page 58: ... speed fan setpoint and the damper minimum position low speed fan setpoint Outside Airflow Measurement The rooftop unit has the option of having an airflow measuring station AMS installed The AMS meets ASHRAE standards for building ventilation The unit controller modulates the outside air damper open closed to maintain the fresh air intake setpoint If DCV is installed with an AMS the outside air d...

Page 59: ...ets the outside air damper minimum position setpoint based on an internal algorithm When the IAQ sensor PPM is greater than the IAQ setpoint the outside airflow setpoint is reset upwards to 5 000 CFM as the IAQ increases from the IAQ setpoint to the IAQ setpoint 100 ppm Figure 23 5 000 CFM Fixed Calculated Outside Airflow Setpoint Outside Airflow Setpoint IAQ Setpoint IAQ Setpoint 100 ppm Effectiv...

Page 60: ...VFD driven ex haust fan and a barometric damper A barometric relief damper has no actuator attached to drive it open closed The barometric relief damper is held closed by spring tension and opens when the exhaust fan starts When the current building pressure rises above the building pressure setpoint the exhaust fan analog out put starts to increase The exhaust fan is energized when the output rea...

Page 61: ...led and the bypass damper is fully opened The ERW is enabled when the difference between the return air and the outside air is greater than the energy recovery setpoint The energy recovery setpoint is the effective DAT heat ing setpoint The unit controller uses enthalpy values to compare the return air and the outside air as long as both RH values are valid When the RH values are not valid the uni...

Page 62: ...urned ON When the unit type is SZVAV the supply fan runs at 100 Return exhaust fan is turned OFF Outside air damper is driven 100 open Return damper is driven 100 closed Exhaust damper is driven 100 closed Depressurize Depressurize mode is used to evacuate the air inside the building without introducing any outside air using the sequence below Supply fan is turned OFF Return exhaust fan is turned ...

Page 63: ...ed with date and time stamps LD28016 Figure 26 Alarm Log Menu Summary Menu Further expands into sensors and unit sub menus The sensors menu displays key op erational parameters and the unit menu displays unit naming information LD28017 Figure 27 Summary Menu Commission Menu Displays commissioning mode options LD28018 Figure 28 Commission Menu Controller Menu Displays network firmware and time setu...

Page 64: ...Wizard Menu Presents a well defined se quence of steps to be performed to start the rooftop unit LD28023 Figure 33 Start Up Wizard Menu Table 26 Menus and Submenus Menu Submenu Parameters Displayed Default Conditions for Parameters Displayed Units Range Status Figure 24 Thermostat Y1 Thermostat Off On Y2 Thermostat Off On W1 Thermostat Off On W2 Thermostat Off On G Thermostat Off On Humidistat Off...

Page 65: ...ure OFF Economizer Damper Position SupplyF S Supply Fan Status OFF Idle OFF Idle ON Purge ON Gas Valve or Limit Fault ON ON Thermostat Request ON Fan Off Delay for Cool ON Fan Off Delay for Heat ON Continuous Fan Occupied Operation ON Normal Command OFF Exceeding Duct Pressure Shutdown SP OFF Low Voltage OFF Fan Overload Lockout OFF Fan VFD Fault OFF Hot Water Freeze Stat OFF Air Proving Switch OF...

Page 66: ...dity RH OprOAH Operational Outside Air Humidity RH OprIAQ Operational Indoor Air Quality ppm OprOAQ Operational Outdoor Air Quality ppm OprSafetyCmd Operating Safety Command Normal Normal Pressurize Depressurize Purge Shutdown Pre Shutdown UnitEn Unit Enable Enable Shutdown Enable Sensors Sensors DAT Discharge Air Temperature deg F RAT Return Air Temperature deg F OAT Outside Air Temperature Input...

Page 67: ...t Name Serial Unit Serial Number ModelName Unit S Unit Status Idle SD Alarm Purge Command Start Up Wizard Morning Warm Up Air Tempering Dehumidification Heating Cooling Economizer Fan Only Comfort Ventilation Start Up Delay Disabled Updating Software UnitEn Unit Enable Enable Shutdown Enable HdwrReset Hardware Reset No No Yes ResetLO Reset Lockouts OFF OFF ON Commission Figure 28 Standard OccMode ...

Page 68: ...to Setup Disabled Controlled by IAQ Diff between IAQ and OAQ MornW En Morning Warm Up Enabled No No Yes PIDTunRst PID Tuning Reset False False True SafetySetup1 Normal Normal Pressurize Depressurize Purge Shutdown SafetySetup2 Normal Normal Pressurize Depressurize Purge Shutdown SafetySetup3 Normal Normal Pressurize Depressurize Purge Shutdown SafetySetupNI Safety Setup Network Input Normal Normal...

Page 69: ... iwg DctPrs Sp Duct Pressure Setpoint 1 5 iwg 0 5 BldgPres Building Static Pressure iwg Bldg Sp Building Pressure Setpoint iwg 0 25 to 0 25 Supply Flow Value cfm Supply Pickup Gain 0 100 Supply Area square feet 0 100 Altitude feet 1 500 to 30 000 SZVAVClgMinFan SZVAV Cooling Minimum Fan Speed 20 67 SZVAVHtgMinFan SZVAV Heating Minimum Fan Speed 20 67 SZVAVMinFanSpd SZVAV Minimum Fan Speed 20 67 Hi...

Page 70: ...ode Exhaust Damper Percent Override Mode OFF OFF ON EDPctOvr Pos Exhaust Damper Percent Override Position 0 0 100 ExDmpPosFanOn Exhaust Damper Position for Exhaust Fan to Turn On 20 20 99 ExDmpPosFanOff Exhaust Damper Position for Exhaust Fan to Turn Off 10 10 89 Exhaust Flow Value cfm Exhaust Pickup Gain 0 100 Exhaust Area square feet 0 100 BldgPres Building Static Pressure iwg Bldg Sp Building P...

Page 71: ... Command OFF OFF ON HRW O Heat Recovery Wheel Output 0 0 100 EAD O Exhaust Damper Command 0 0 100 FaultOut1 OFF OFF ON FaultOut2 OFF OFF ON IsoDmpr Isolation Damper Close Close Open VAV Box MZVAV Box Heat Command OFF OFF ON Commissioning Mode Cooling Commissioning Mode Disable Disable Enable Commissioning Time Remaining minutes Extend Commissioning Time No No Yes SF C Supply Fan Command OFF ON SF ...

Page 72: ...ge Command 7 OFF ON H8 Heating Stage Command 8 OFF ON HWV Hydronic Heat Valve Command 0 0 100 VAV Box MZVAV Box Heat Command OFF OFF ON Network Setup FcBusMode On units with a BACnet IP card installed BACnet MS TP Modbus and N2 are not functional Select one of the available parameters Wired Field Bus Wireless Field Bus N2 Field Bus Modbus Field Bus Ethernet Field Bus Indeterminate FC Bus Mode Addr...

Page 73: ...10 BldgPres Building Static Pressure iwg 1 to 1 MAT Mixed Air Temperature delta deg F 10 to 10 OAT Outdoor Air Temperature Input delta deg F 10 to 10 RAT Return Air Temperature delta deg F 10 to 10 Return Fan Discharge Pressure iwg 1 to 1 EconDampPos Economizer Damper Position open 10 to 10 RAD POS Return Air Damper Position open 10 to 10 PFILT DP Pre Filter Differential Pressure iwg 1 to 1 FFILT ...

Page 74: ...BACnet Integration Setup on page 94 DevName Displays the Device Name Could be Changed by User Address MAC address Refer to Table 29 on page 96 IP Address Refer to Table 28 on page 96 TimeZone Central Eastern Central Mountain Pacific Newfoundland Atlantic Alaska Hawaii Descrip User to Enter Text if Required Comm S Displays the Network Status Not Configured Active Waiting For Poll For Master Not Rec...

Page 75: ...Ver Hardware Version Options Control Board Firm Cond1MainVer Firmware Version Condenser 1 Control Board Cond1AppVer Application Version Condenser 1 Control Board Cond1HardVer Hardware Version Condenser 1 Control Board Cond2MainVer Firmware Version Condenser 2 Control Board Cond2AppVer Application Version Condenser 2 Control Board Cond2HardVer Hardware Version Condenser 2 Control Board CTBMainVer F...

Page 76: ...ur 0 23 minute 0 59 Export Trend Insert the USB into the main control board to use the export trend feature Details Figure 31 OCC OccMode Occupancy Mode External Schedule External OCC Occupancy Input Unoccupied Occupied Unoccupied OprOcc Operational Occupancy Unoccupied Occupied Unoccupied Bypass Standby OccSrc Occupancy Input Source Local Input Local Input Local Network Sensor BAS Network Request...

Page 77: ...En Compressor 1B Enabled Yes No C2A En Compressor 2A Enabled Yes No C2B En Compressor 2B Enabled Yes No Circ1ClgOATCutout Circuit 1 OAT Cooling Cutout deg F 75 Circ2ClgOATCutout Circuit 2 OAT Cooling Cutout deg F 75 MornC En Morning Cool Down Enabled No Yes MornCRAT Sp Morning Cool Down Return Air Temperature Setpoint deg F 50 85 MornCDAT Sp Morning Cool Down Discharge Air Temperature Setpoint deg...

Page 78: ...ntime for a Cooling Stage minutes 3 10 RpdStrtTime Rapid Start Time Limit minutes 0 15 ClgAdapTunEn Cooling Adaptive Tuning Enable No No Yes Clg Service Stage 1A Stage 1B Stage 2A Stage 2B C1A S Compressor 1A Status OFF Idle ON Minimum On Time ON Normal Command OFF Cooling is Disabled OFF OAT Cutout OFF Low Ambient Temperature OFF Low Supply Voltage OFF High Pressure Lockout OFF Low Pressure Locko...

Page 79: ...re Safety 2 Normal Alarm LPS2 LO Low Pressure Lockout 2 Normal Lockout COND A Condensate Alarm Alarm Normal C1A HP Unload Compressor 1A High Pressure Unload Alarm Normal C1B HP Unload Compressor 1B High Pressure Unload Alarm Normal C2A HP Unload Compressor 2A High Pressure Unload Alarm Normal C2B HP Unload Compressor 2B High Pressure Unload Alarm Normal C1A LP Unload Compressor 1A Low Pressure Unl...

Page 80: ...g 2 deg F SatDischTemp2 Saturated Discharge Temperature 2 deg F SatLLTemp2 Saturated Liquid Line Temperature 2 deg F SatSucTemp2 Saturated Suction Temperature 2 deg F Htg Setup Htg En Heating Mode Enabled For Operation No Yes HtgStgs Number of Heating Stages Installed 0 8 Htg Type Heating Control Type None Gas Electric Hot Water Steam HtgOcc Sp Occupied Heating Setpoint deg F 40 85 Common SP deg F...

Page 81: ...ble No Yes DATTemper Sp Discharge Air Temperature Tempering Setpoint deg F 40 60 Htg Service Unit StgHtgCmd Staged Heating Command Htg S Heating Status OFF Idle ON SAT Tempering Morning Warm Up Thermostat Heating Unoccupied Heating Occupied Heating OFF Disabled OFF OAT Lockout OFF SAT Limit OFF Waiting for Changeover Delay Comfort Ventilation OprHtg Sp Operating Heating Setpoint deg F OprHtgDAT SP...

Page 82: ...re Invalid ID Plug Installed Board Failure No Alarm Unknown Fault HeatFaults Applicable to Modulating Gas Heat Not Installed Board Failure Failed Ignition Primary Limit Failure Modulation Valve Failure Air Pressure Sensor Reading Low Air Pressure Sensor Reading High Unexpected Flame Main Burner No Enable Signal During Call for Heat Open Fuse Unexpected Flame Split Manifold Burner Invalid ID Plug I...

Page 83: ...n VFD Fault OFF Hot Water Freeze Stat OFF Air Proving Switch OFF Minimum Off Delay OFF Fan On Delay For Heat OFF Fan Off Delay for Cool SF C Supply Fan Command OFF ON SF O Fan Command SF Runtime hours SF Starts counts OprFanReq Operating Fan Request OFF ON FanReqSrc Fan Request Source Unreliable Local Input Network Sensor High Priority BAS Override Input Not Available FanVFD1 RT Fan VFD1 Accumulat...

Page 84: ...F in Free Cooling No Yes EconOAT SpEn Economizer Outside Air Temperature Enable Setpoint deg F 40 80 EconOAEnth Sp Economizer Outdoor Air Enthalpy Setpoint Btu lb dry air 10 50 MATClgLim Mixed Air Temperature Cooling Limit deg F 40 80 DVent Mode Demand Ventilation Mode of Operation Disabled Controlled by IAQ Diff between IAQ and OAQ DVentMaxEconPos Demand Ventilation Maximum Economizer Position 0 ...

Page 85: ...ir Quality ppm Fr Air Fresh Air Intake Value cfm EconDampPos Economizer Damper Position Open EconAlrmDly FDD Economizer Alarm Delay seconds 1 3 600 EconPosErr FDD Economizer Damper Allowed Error 0 100 EconMinErr FDD Damper Min Position Tolerance 0 10 RAD POS Return Air Damper Position RAD O Return Air Damper Command RAH Alarm Return Air Humidity Sensor Alarm Normal Alarm IAQSenFlt IAQ Sensor Fault...

Page 86: ...iwg 0 5 DctShutdownSp Duct Pressure Shutdown Setpoint iwg 0 5 DAP Min Discharge Air Static Pressure Minimum iwg 0 01 1 DAP AlmDly Discharge Air Static Pressure Alarm Delay seconds 0 600 MZ VAV Service SF O Fan Command DA P Discharge Air Static Pressure in wc DctPrs Sp Duct Pressure Setpoint in wc 0 5 DAT Discharge Air Temperature deg F StgClgCmd Staged Cooling Command Clg S Cooling Status OFF Idle...

Page 87: ...00 SZVAVMinFanSpd SZVAV Minimum Fan Speed 20 67 SZVAVClgMinFan SZVAV Cooling Minimum Fan Speed 20 67 SZVAVHtgMinFan SZVAV Heating Minimum Fan Speed 20 100 SZVAV Service StgClgCmd Staged Cooling Command StgHtgCmd Staged Heating Command OprZT Operational Zone Temperature deg F DAT Discharge Air Temperature deg F SF O Fan Command Econ Economizer Damper Command C1A Compressor 1A Command OFF ON C1B Com...

Page 88: ...d Staged Cooling Command Evaporator Coil Temperature Evaporator Coil Temp deg F OprEvapTempSp Operational Evaporator Temperature Setpoint deg F Discharge Air Temperature deg F OprHGRTempSp Operational HGRH Temperature Setpoint deg F OprZT Operational Zone Temperature deg F OprZH Operational Zone Humidity RH HGR Hot Gas Reheat Command C1A Compressor 1A Command OFF OFF ON C1B Compressor 1B Command O...

Page 89: ...ccupied Wednesday HH MM Occupied HH MM UnOccupied Thursday HH MM Occupied HH MM UnOccupied Friday HH MM Occupied HH MM UnOccupied Saturday HH MM Occupied HH MM UnOccupied Sunday HH MM Occupied HH MM UnOccupied Schedule Edit Weekly Schedule Add Event Monday HH MM Occupied HH MM UnOccupied Tuesday HH MM Occupied HH MM UnOccupied Wednesday HH MM Occupied HH MM UnOccupied Thursday HH MM Occupied HH MM...

Page 90: ...a Enter Circuit 2 Data Circuit 1 Tests Done Circuit 2 Tests Done Compressor Tests Done Electric Heat 1 8 Test Done Verify Electric Heat 1 8 On Gas Heat 1 5 Low Fire Start Gas Heat 1 5 High Fire Start Verify Gas Heat 1 5 Low Fire Verify Gas Heat 1 5 High Fire Gas Heat Module 1 5 Test Done Gas Heat Module 1 5 Cool Down Heating Tests Done Active Test Status Stabilize Wait Check Available Not Run Pass...

Page 91: ...ce Software Premier Firmware WARNING Ensure the latest version of the firmware file is downloaded to the USB drives before starting this process NOTE It is recommended to have two blank flash drives with storage capacity not exceeding 8 GB One flash drive shall be used for the roof top unit firmware update GRYP_RTUUSB PKG and the second flash drive shall be used to update the display firmware GRYP...

Page 92: ...ove all other files from the USB drive prior to adding the current restoration file After the backup completes a comma separated value csv restoration file is created in the top level of the flash drive The file name is drawn from the date and time settings in the main control board at the time the file was created Figure 37 The restoration file size is generally less than 30 KB LD28369 Figure 36 ...

Page 93: ...int SZVAV unoccupied cooling setpoint MZVAV occupied heating enabled MZVAV occupied heating setpoint MZVAV unoccupied heating enabled MZVAV unoccupied heating setpoint Morning warm up enabled Morning warm up return air temperature setpoint SZVAV occupied heating setpoint SZVAV unoccupied heating setpoint Low ambient economizer setpoint Low ambient economizer minimum position Language Units BAS com...

Page 94: ...erminal COM SHLD COM SHLD NOTE The FC bus shield SHLD terminal is isolated and can be used to connect daisy chain the shields for FC bus wiring LD28037 Figure 40 FC Bus Daisy Chain Communication Components FC BUS Terminal Block An FC bus connects to BACnet MS TP Modbus or N2 devices Third party BACnet MS TP or Modbus devic es can also be connected to the FC bus Units shipped with a BACnet IP card ...

Page 95: ...controller and other SA bus devices in a daisy chain configura tion using a 4 wire twisted shielded cable as shown in Figure 41 See Table 27 on page 95 for more infor mation MS TP Bus Cable Recommendations The MS TP bus supports much higher baud rates than the N2 bus Higher baud rates make the MS TP bus less fault tolerant and less immune to in terference from inductive noise sources that may be p...

Page 96: ...ed is false not used Set to the IP address designated for the unit 0 0 0 0 to 255 255 255 255 Static IP Mask This IP mask is used when DHCP enabled is false not used Set to the IP mask for the site 0 0 0 0 to 255 255 255 255 Static IP Router Address This IP router address is used when DHCP enabled is false not used Set to the router IP address for the site 0 0 0 0 to 255 255 255 255 IP Address Rea...

Page 97: ...e 30 MAP Gateway Related Documentation Topic Document Getting up and running quickly with the MAP gateway Mobile Access Portal Gateway Quick Start Guide Part No 24 10737 16 Installing and wiring a MAP gateway Mobile Access Portal Gateway Installation Instructions Part No 24 10737 8 Verasys Verasys is an easy intuitive way to control and optimize single and multi site light commercial or commercial...

Page 98: ...me Delay A BAS command to adjust ZT alarm time delay 0 120 minutes NetZT AV 29526 R W NetZT Network Override ZT A BAS command to adjust network override ZT 0 0 100 0 F OprIAQ AV 29527 R OprIAQ Operational IAQ Displays the active indoor air CO2 PPM NetIAQ AV 29530 R W NetIAQ Network Override IAQ A BAS command to override indoor air CO2 0 5 000 PPM OprZH AV 29531 R OprSH Operational Space Humidity D...

Page 99: ...ure iwg DctPrs Sp AV 29566 R W DctPrs Sp Duct Pressure Setpoint A BAS command to adjust active duct static pressure setpoint iwg DctShutdownSp AV 29567 R W DctShutdownSp Duct Pressure Shutdown Setpoint A BAS command to adjust the duct static pressure unit shutdown setpoint iwg ClgStgs AV 29576 R ClgStgs Number of Cooling Stages Installed Displays the number of cooling stages installed MinRtCoolStg...

Page 100: ...aining 2A Displays the minimum time remaining for compressor 2A to turn off seconds C1A ASCDTmr AV 29635 R C1A ASCDTmr Anti Short Cycle Delay Time Remaining 1A Displays the time remaining for compressor 1A to turn on seconds C1B ASCDTmr AV 29636 R C1B ASCDTmr Anti Short Cycle Delay Time Remaining 1B Displays the time remaining for compressor 1B to turn on seconds C2A ASCDTmr AV 29638 R C2A ASCDTmr...

Page 101: ...ating stage 3 hours HWV AV 29741 R HWV Hydronic Heat Valve Command Displays the output from the control to a hot water steam valve DATTemper Sp AV 29746 R W DATTemper Sp DAT Tempering Setpoint A BAS command to adjust discharge air tempering setpoint 40 0 60 0 F Econ AV 29748 R Econ Economizer Damper Command The commanded economizer damper position EconOAT SpEn AV 29753 R W EconOAT SpEn Economizer ...

Page 102: ...ays the status of exhaust damper command ExDmpPosFanOn AV 29783 R W ExDmpPosFanOn Exhaust Damper Position for Exhaust Fan to Turn ON A BAS command to enable exhaust fan based on exhaust damper position 20 99 ExDmpPosFanOff AV 29784 R W ExDmpPosFanOff Exhaust Damper Position for Exhaust Fan to Turn OFF A BAS command to disable exhaust fan based on exhaust damper position 20 99 HGR AV 29790 R HGR HG...

Page 103: ...16 R W EconAlrmDly FDD Economizer Alarm Delay A BAS command to adjust economizer FDD alarm delay 1 3 600 seconds EconPosErr AV 29917 R W EconPosErr FDD Economizer Damper Allowed Error A BAS command to adjust the outside air damper feedback versus actual position error tolerance 0 100 EconMinErr AV 29918 R W EconMinErr FDD Damper Min Position Tolerance A BAS command to adjust the outside air damper...

Page 104: ...es ON 1 Displays the heating start counts for stage 1 H2 Starts AV 29974 R H2 Starts Heating Number Times ON 2 Displays the heating start counts for stage 2 H3 Starts AV 29975 R H3 Starts Heating Number Times ON 3 Displays the heating start counts for stage 3 H4 Runtime AV 29977 R H4 Runtime Heating Stage 4 Accumulated Runtime Displays the total runtime for stage 4 heating hours H4 Starts AV 29979...

Page 105: ...ondenser Fan 1 Output Displays the active modulating condenser fan 1 value 0 100 ModCondFan2Out AV 30019 R ModCondFan2Out Modulating Condenser Fan 2 Output Displays the active modulating condenser fan 2 value 0 100 ModHtgOut AV 30020 R ModHtgOut Modulating Heat Output Displays the active modulating heat value 0 100 OprHtgDAT SP AV 30021 R OprHtgDAT SP Operating Heating DAT Setpoint Displays the ac...

Page 106: ...048 R LLSubcool1 Liquid Line Sub Cooling 1 Displays the active system 1 liquid line sub cooling temperature F LLSubcool2 AV 30049 R LLSubcool2 Liquid Line Sub Cooling 2 Displays the active system 2 liquid line sub cooling temperature F SatDischTemp1 AV 30050 R SatDischTemp1 Saturated DAT 1 Displays the active system 1 saturated DAT F SatDischTemp2 AV 30051 R SatDischTemp2 Saturated DAT 2 Displays ...

Page 107: ...isplays the thermostat call for stage 2 heating 0 OFF 1 ON G Tstat MV 29511 R G Thermostat G Thermostat Displays the thermostat call of supply fan 0 OFF 1 ON Occ Tstat MV 29512 R OCC Occupancy Input Displays the status of the occupancy input 0 disabled UNOCC 1 enabled OCC Tstat Only MV 29514 R W Tstat Only Thermostat Only Control Enabled A BAS command that allows control of unit by thermostat 0 NO...

Page 108: ...3 high priority OprFanReq MV 29534 R OprFanReq Operating Fan Request Displays the status of supply fan request 0 OFF 1 ON FanReqSrc MV 29535 R FanReqSrc Fan Request Source Displays the source of supply fan request input 0 unreliable 1 local input 2 network sensor 3 high priority NetFanReq MV 29536 R W NetFanReq Network Override Fan Request A BAS command that allows user to request for supply fan 0...

Page 109: ...ff compressors in free cooling mode 0 NO 1 YES C1A MV 29611 R C1A Compressor 1A Command Displays the command of compressor C1A 0 OFF 1 ON C1B MV 29612 R C1B Compressor 1B Command Displays the command of compressor C1B 0 OFF 1 ON C2A MV 29614 R C2A Compressor 2A Command Displays the command of compressor C2A 0 OFF 1 ON C1A S MV 29615 R C1A S Compressor 1A Status Displays the status of compressor 1A...

Page 110: ... Heating Mode Enabled For Operation A BAS command that allows the unit to be placed in a heating mode 0 OFF 1 ON Htg S MV 29708 R Htg S Heating Status Displays the active heating status 0 OFF idle 1 ON 2 SAT tempering 3 morning warm up FSHW MV 29712 R Water FS Low Temp Water Coil Freeze Stat Displays the status of low temperature water coil freezestat 0 normal 1 alarm HtgUnocc En MV 29724 R W HtgU...

Page 111: ... economizer 0 disabled 1 damper not functional 2 purge 3 unavailable sensor fault FreeClg Mode MV 29751 R FreeClg Mode Free Cooling Current Mode Displays the status of the active economizer mode 0 dry bulb temperature 1 differential dry bulb temperature 2 single enthalpy 3 dual enthalpy 4 unreliable FreeClg Sel MV 29752 R W FreeClg Sel Free Cooling Selection Allows for the selection of the economi...

Page 112: ...R W NetSafety Network Override Safety Command A BAS command to override safety command 0 false 1 true SS S MV 29802 R SS S Safety Switch Status Displays the unit safety switch status 0 normal 1 alarm Unit S MV 29803 R Unit S Unit Status Displays the unit status 0 idle 1 SD alarm 2 purge command 3 start up wizard ExcessOutAirFlt MV 29809 R Not Displayed Locally Not Displayed Locally Displays the ex...

Page 113: ...A BAS command to enable HGRH for unoccupied operation 0 NO 1 YES SZVAVEn MV 29908 R W SZVAVEn SZ VAV Enabled A BAS command to enable SZVAV 0 OFF 1 ON ADR S MV 29910 R ADR S Automated Demand Response Displays the automated response status 0 NO 1 YES OffDurUnocc MV 29914 R W OffDurUnocc OFF During UNOCC A BAS command to disable fan during UNOCC mode 0 NO 1 YES EconFltDetectEn MV 29915 R W EconFltDet...

Page 114: ...n in OCC Alarm Displays the unit in occupied alarm status 0 normal 1 alarm H4 MV 29976 R H4 Heating Stage Command 4 Displays the command of heating stage 4 0 OFF 1 ON H4 S MV 29978 R H4 S Heating Stage 4 Status Displays the status of heating stage 4 0 OFF idle 1 ON minimum ON time 2 ON normal command 3 OFF heating is disabled H5 MV 29980 R H5 Heating Stage Command 5 Displays the command of heating...

Page 115: ...arm Displays alarm for active temperature below setpoint in heating mode 0 normal 1 alarm Safety2 MV 30023 R Safety2 Local Safety Command Input 2 Displays the status of local safety command input 2 0 false 1 true Safety3 MV 30024 R Safety3 Local Safety Command Input 3 Displays the status of local safety command input 3 0 false 1 true RunContAlm MV 30027 R RunContAlm Unit Running Continuously Alarm...

Page 116: ...point 45 0 98 0 F OprEvapTempSp AV 30066 R OprEvapTempSp Operational Evap Temperature Setpoint Displays the active evaporator temperature setpoint F OprHGRTempSp AV 30067 R OprHGRTempSp Operational HGRH Temperature Setpoint Displays the active HGRH temperature setpoint F DemLoadshd MV 30075 R DemLoadshd Demand Loadshed Displays the demand load shed command status 0 NO 1 YES SafetySetupNI MV 30079 ...

Page 117: ...d three times Critical C2B locked out due to low pressure LP switch has tripped three times Critical C2C locked out due to low pressure LP switch has tripped three times Critical Unit shutdown due to smoke etc A device in the shut down circuit has opened Critical Exhaust return fan VFD failure Abnormal condition exists on the exhaust return fan VFD Critical Supply fan VFD 1 failure Abnormal condit...

Page 118: ...irflow dirty filters iced on coil low charge ServicePriority C1A shutdown due to high pressure Caused by dirty condenser coils condenser fan failure over charged ServicePriority C1B shutdown due to high pressure Caused by dirty condenser coils condenser fan failure over charged ServicePriority C1C shutdown due to high pressure Caused by dirty condenser coils condenser fan failure over charged Serv...

Page 119: ...ted circuit ServicePriority Building pressure sensor failure Sensor input out of expected range Open or shorted circuit ServicePriority Return fan pressure sensor failure Sensor input out of expected range Open or shorted circuit ServicePriority Evaporator coil temperature 1 sensor failure Sensor input out of expected range Open or shorted circuit ServicePriority C1A shutdown exceeded operating en...

Page 120: ...n pressure sensor failure Sensor input out of expected range Open or shorted circuit Service C1 suction temperature sensor failure Sensor input out of expected range Open or shorted circuit Service C2 suction temperature sensor failure Sensor input out of expected range Open or shorted circuit Service Zone air humidity sensor failure Sensor input out of expected range Open or shorted circuit Servi...

Page 121: ...omizer damper did not open as commanded Damper stuck closed Service Economizer economizing when it should not Economizer damper did not close as commanded Damper stuck open Service Economizer damper not modulating Economizer damper did not respond to a change in the percent open or close command Service Excess outdoor air Too much outside air is being introduced into the unit Outside air damper fa...

Page 122: ...soncontrols com Subject to change without notice Form 5586996 JSG A 0120 Supersedes 5586996 JSG A 1119 All rights reserved The Smart Equipment logo is a trademark of Johnson Controls in the United States and other countries It is a part of the Johnson Controls product portfolio ...

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