Carrier 50HCQA Installation Manual

48/50HC 04---28Single Package Rooftop Unitswith ComfortLink Controls Version 2.Xand PURONr (R---410A) RefrigerantCont ro ls , St art---Up, Operat io n

10Power ExhaustIf a Power Exhaust accessory was field installed, the unit must beconfigured for it by setting ConfigurationECONPE.EN toENBL. The def

100MODE — CONFIGURATION (cont)ITEM EXPANSI O N RANGE UNITS DEFAULTCCN TABLE/S u b --- T A B L ECCN POINT ENTRYHMZR Humidimizer Config HMZR_CFGREHT Hum

101MODE — CONFIGURATION (cont)ITEM EXPANSI O N RANGE UNITS DEFAULTCCN TABLE/S u b --- T A B L ECCN POINT ENTRYAIR.Q Air Quality Config. IAQ_CFGIA.CF I

102MODE — CONFIGURATION (cont)ITEM EXPANSI O N RANGE UNITS DEFAULTCCN TABLE/S u b --- T A B L ECCN POINT ENTRYALM.O Alarm Relay Config. ALM_CFGA.SPC S

103UNIT START-UP CHECKLISTMODEL NO.:DATE:I. PRE-START-UP:SERIAL NO:TECHNICIAN:j VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNITj VERIF

104Copyright 2012 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 09/12Manufacturer reser ves the right to change, at any ti

11Table 3 – Setting an Occupied Time Schedule — Weekdays Only for 7:30 to 22:30DISPLAYMENUSUB-SUBMODEKEYPADENTRYITEM DISPLAY ITEM EXPANSION COMMENTTIM

12SERVICE TESTThe Service Test function can be used to verify proper operation ofcompressors, heating stages, Humidi--MiZert System, indoor fan,power

13Heating TestThe heating (HEAT) submenu is used to change output status forthe individual heat stages, gas or electric. The fans (FANS) andcooling (C

14CONTROLS OPERATIONDisplay ConfigurationThe ConfigurationDISP submenu is used to configure the localdisplay settings.Metric Display (METR)This varia

15System Mode (SYS)In Run Status and Operating Modes, the current system mode isdisplayed with expandable text. This is an overall state of the unit.T

16When the space sensor has a setpoint slider adjustment, the cooland heat setpoints (occupied) can be offset by sliding the bar fromone side to the o

17Staged Air Volume (SAV) Units (FTYP = LEN VFD)The SAV Option is a new method of controlling the supply fan in atypical constant volume rooftop unit.

18Constant Volume (CV) Units (FTYP = 1--Speed)Single speed fan units are controlled by the Indoor Fan Relay 1(Outputs FANS IDF.1) on the main base b

19expire before another stage can be added or a stage can besubtracted. If at any time the Supply--Air Temperature (SAT) fallsbelow the Minimum Supply

2Alarms and Alerts 32...Control Module Communication 39...Communication Failures 39...

20Staging ControlOnce the unit is in a heating mode, it must decide what the demand isand how to satisfy. Based on the unit control configuration, req

21EconomizerIf an economizer is installed, then Economizer Installed(ConfigurationECONEC.EN) should be set to YES. Theeconomizer damper is controlle

22The shape of the Economizer Minimum Position vs. Fan Speedcurve is determined by the configuration parameters: Econ Min at25% Fan speed (Configurati

23Power Exhaust (SAVt units)To enable power exhaust, set Power Exhaust Installed(ConfigurationECONPE.EN) to YES. Both power exhaustfans are wired to

24IA.CF = 3 (Control Minimum Position)When IA.CF = 3, an external 4 to 20 mA source is used to set theminimum position. The 4mA signal corresponds to

25Sensor Value at 4ma (ConfigurationAIR.QH.4M)setsthe%display for a 4mA input from the relative humidity sensor. RHSensor Value at 20ma (Configurati

26COMPCOND COIL HUMIDI-MIZER COILEVAP COILINDOOR ENTERINGAIRMETERINGDEVICERLV.xRDV.xOUTDOOR AIRCLOSED VALVEOPEN VALVECLV.xC12360Fig. 9 -- Normal Cooli

27COMPCOND COIL HUMIDI-MIZER COILEVAP COILINDOOR ENTERINGAIRMETERINGDEVICERLV.xRDV.xOUTDOOR AIRCLOSED VALVEOPEN VALVECLV.xC12362Fig. 11 -- Hot Gas Reh

28COMPCOND COIL HUMIDI-MIZER COILEVAP COILINDOOR ENTERINGAIRMETERINGDEVICELDV.xRDV.xOUTDOOR AIRCLOSED VALVEOPEN VALVE3-WAY VALVEC12364Fig. 13 -- Subco

29Reheat ControlThe cooling staging and compressor control routines areresponsible for controlling each circuit in one of the threesub--modes (Cool, R

3FIRE, EXPLOSION HAZARDFailure to follow this warning could result in personalinjury, death and/or property damage.Improper installation, adjustment,

30When the Start Bias Time is greater than zero the algorithm willsubtract it from the next occupied time to calculate the new starttime. When the new

31ConfigurationCCNLDSHR.MXCThis configuration tells the unit the maximum cooling stagesallowed to be on during a redline condition.ConfigurationCC

32components to be checked while the unit is not operating. SeeService Test.Complete Unit StoppageThere are several conditions that can cause the unit

33alert. The possible causes are a welded contactor, frozencompressor relay on MBB, or adverse conditions.Alert Codes T064 and T065 – Circuit Saturate

34Alert Codes T143 and T144 -- Circuit Failure to PressurizeAlert codes T143 and T144 are for circuits A and B respectively.These alerts have “Service

35ConfigurationUNITFN.SW. Verify that the configurationis set correctly. Verify the wiring and fan status switch. The hoseshould be connected to the

36Alert Code T416 -- OAQ Input Out of RangeThis alert occurs when the OAQ input (on ECB) is less than 3.5mA and the sensor is configured as installed.

37Table 9 – ComfortLink Alarm CodesALARMORALERTNUMBERDESCRIPTIONACTION TAKEN BYCONTROLRESETMETHODPROBABLE CAUSET051Compressor A1 Safety TripAdd Strike

38Table 9 — ComfortLink Alarm Codes (cont)ALARMORALERTNUMBERDESCRIPTIONACTION TAKEN BYCONTROLRESETMETHODPROBABLE CAUSEA154 Serial EEPROM Hardware Fail

39Control Module CommunicationRed LEDProper operation of the MBB and ECB control boards can bevisually checked by looking at the red status LEDs. When

4Accessory Navigator DisplayThe accessory hand-held Navigator display can be used with the48/50HC units. (See Fig. 2.) The Navigator display operates

40Cooling TroubleshootingUse the Scrolling Marquee display or a CCN device to view thecooling status display and the cooling diagnostic display (seeAp

41Humidi--MiZert TroubleshootingUse the unit Scrolling Marquee display or a CCN device to viewthe cooling status display and the cooling diagnostic di

42Economizer TroubleshootingUse the unit Scrolling Marquee display or a CCN device to viewthe economizer status display and the economizer diagnosticd

43Heating TroubleshootingUse the unit Scrolling Marquee display or a CCN device to viewthe heating status display and the heating diagnostic display (

441 FLASH - INDOOR FAN DELAYMODIFIED (HEATING)2 FLASHES - OPENING OF LIMITSWITCH3 FLASHES - FLAME SENSORINDICATES FLAME WITHCLOSED GAS VALVE4 FLASHES

45Table 15 – IGC Board LED Alarm CodesLEDFLASHCODEDESCRIPTIONACTION TAKEN BYCONTROLRESET METHOD PROBABLE CAUSEOn Normal Operation— — —Off Hardware Fai

46Phase Loss ProtectionThe phase loss protection option will monitor the three-phase electricalsystem to provide phase reversal and phase loss protect

47SCT.ASCT.ASCT.A48/50HC 04 SIZE48/50HC 05, 06 SIZES48/50HC 07 SIZEC12366Fig. 17 -- Saturated Condensing Temperature Thermistor Location — 48/50HC 04-

4848/50HC 08, 09 SIZESSCT. BSCT. ASCT. ASCT. ASCT. BSCT. BSCT. A48/50HC 11 SIZE 48/50HC 12 SIZEC12367Fig. 18 -- Saturated Condensing Temperature Therm

49SCT. BSCT. ACIRCUIT “B”CIRCUIT “A”C12368Fig. 19 -- Saturated Condensing Temperature Thermistor Location — 48/50HC 14ComfortLINK v2.X

5Table 2 – Scrolling Marquee Mode and Menu Display StructureRUNSTATUSSERVICETESTTEMPERATURES PRESSURES SETPOINTS INPUTS OUTPUTS CONFIGURATIONTIMECLOCK

50SCT.BSCT.AC11477Fig. 20 -- Saturated Condensing Temperature Thermistor Location — 48/50HC 17--20SCT.BSCT.AC11478Fig. 21 -- Saturated Condensing Temp

51Table 17 – Temperature (_F) vs Resistance/Voltage Drop Values for OAT, SAT, and SPT Thermistors (10K at 25_C Type II Resistors)TEMP(F)RESISTANCE(Ohm

52Table 18 – Temperature (_F) vs. Resistance/Voltage Drop Values for SCT Sensors (5K at 25_C Resistors)TEMP(F)RESISTANCE(Ohms)VOLTAGEDROP (V)TEMP(F)RE

53Table 19 – Pressure (psig) vs. Voltage Drop Values for Suction Pressure TransducersPRESSURE(psig)VOLTAGEDROP (V)PRESSURE(psig)VOLTAGEDROP (V)PRESSUR

54C12291Fig. 22 -- Typical Control Diagram for 48HC 04--14 Units (48HC 08--09 shown)ComfortLINK v2.X

55C12292Fig. 23 -- Typical Power Diagram for 48HC 04--14 Units (48HC 08--09 shown)ComfortLINK v2.X

56C12338Fig. 24 -- Typical Control Diagram for 50HC 04--14 Units (50HC 14 shown)ComfortLINK v2.X

57C12369Fig. 25 -- Typical Power Diagram for 50HC 04--14 Units (50HC 14 non--Humidi--MiZert shown)ComfortLINK v2.X

58C12370Fig. 26 -- Typical Control Diagram 48HC 17--28 UnitsComfortLINK v2.X

59C12371Fig. 27 -- Typical Control Diagram 50HC 17--28 UnitsComfortLINK v2.X

6Conventions Used in This ManualThe following conventions for discussing configuration points forthe local display (Scrolling Marquee or Navigator ac

60C12372Fig. 28 -- Typical Humid--MiZer Power Diagram and Component Arrangement 48/50HC 17--28 UnitsComfortLINK v2.X

61C12373Fig. 29 -- Typical Non--Humid--MiZer Power Diagram and Component Arrangement 48/50HC 17--28 UnitsComfortLINK v2.X

62Main Base Board (MBB)See Fig. 30 and Table 20. The MBB is the center of theComfortLink control system. It contains the major portion of theoperating

63Table 20 – Main Base Board (MBB) ConnectionsDISPLAYNAMEPOINT DESCRIPTION SENSOR LOCATION TYPE OF I/OCONNECTIONPIN NUMBERINPUTSInput power from TRAN2

64Economizer Control Board (ECB)The ECB controls the economizer actuator. (See Fig. 31 and Table21.) The control signal from the ECB uses either the M

65Table 21 – Economizer Control Board (ECB) ConnectionsDISPLAYNAMEPOINT DESCRIPTIONSENSORLOCATIONTYPE OF I/OCONNECTIONPIN NUMBERINPUTSInput power from

66Integrated Gas Control (IGC) BoardThe IGC is provided on gas heat units. (See Fig. 32 and Table 22.)The IGC controls the direct spark ignition syste

6748/50HC 04--14 Units —Low Voltage Terminal Board (TB)The field connection terminal board has 30 terminals oriented in 3rows of 10 terminals. The fro

68Table 24 – Upper and Lower Field Connection Terminal (TB A and TB B) Board Connections (17--28 Size Units)TERMINALBLOCKTERMINALLABELDISPLAYNAME*DESC

69Table 25 – Central Terminal Board (CTB) ConnectionsCONNECTIONLABELPIN NUMBER POINT DESCRIPTION 24Vac FROM 24Vac TODDCT’STAT7 Compressor 1 Call MBB E

7CFM to the application requirements. The VFD’s settings shouldnot be used for adjusting fan performance. Specific VFDinformation can be found in Appe

70Scrolling Marquee DisplayThis device is the keypad interface used to access rooftopinformation, read sensor values, and test the unit. (See Fig. 35.

71CCN BUSBUILDING SUPERVISORCLROOFTOPUNITROOFTOPUNITROOFTOPUNITROOFTOPUNITCLNETWORKOPTIONSREMOTECCN SITENON CARRIERHVACEQUIPMENTAUTODIALGATEWAYCOMFORT

72Protective DevicesCompressor ProtectionOvercurrentEach compressor has internal line break motor protection.OvertemperatureEach compressor has an int

73TO MAINBASE BOARDREDBLKREDBLKREDBLKSENSOR 1SENSOR 2SENSOR 3REDBLKSENSOR 6SENSOR 5REDBLKSENSOR 4REDBLKREDBLKREDBLKSENSOR 8SENSOR 7 SENSOR 91REDBLKTB1

74Outdoor Air QualityThe outdoor air quality (OAQ) sensor is a field-installed accessorythat measures CO2levels in the air. When installing this senso

75APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — RUN STATUSITEM EXPANSION RANGE UNITSCCN TABLE/S u b --- T A B L ECCN POINTCCN WRITESTATUSRUN STATUS

76APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — RUN STATUS (cont)ITEM EXPANSION RANGE UNITSCCN TABLE/S u b --- T A B L ECCN POINTCCN WRITESTATUSECON

77APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — RUN STATUS (cont)ITEM EXPANSION RANGE UNITSCCN TABLE/S u b --- T A B L ECCN POINTCCN WRITESTATUSSTRT

78APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — SERVICE TESTITEM EXPANSION RANGE UNITS CCN TABLE/Sub --- TABLE CCN POINTSERVICE TESTTEST Field Servi

79APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — INPUTSITEM EXPANSION RANGE UNITSCCN TABLE/S u b --- T A B L ECCN POINTCCN WRITESTATUSDISPLAYWRITESTA

8OUTDOOR AIRSCREEN(HIDDEN)CONTROL BOXACCESS PANELFILTER AND INDOOR COILACCESS PANELINDOOR BLOWERACCESS PANELGAS SECTIONACCESS PANELC11475Fig. 5 -- 48/

80APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — CONFIGURATIONITEM EXPANSI O N RANGE UNITS DEFAULTCCN TABLE/S u b --- T A B L ECCN POINTPAGENO .CONFI

81APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — CONFIGURATION (cont)ITEM EXPANSI O N RANGE UNITS DEFAULTCCN TABLE/S u b --- T A B L ECCN POINTPAGENO

82APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — CONFIGURATION (cont)ITEM EXPANSI O N RANGE UNITS DEFAULTCCN TABLE/S u b --- T A B L ECCN POINTPAGENO

83APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — CONFIGURATION (cont)ITEM EXPANSI O N RANGE UNITS DEFAULTCCN TABLE/S u b --- T A B L ECCN POINTPAGENO

84APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — CONFIGURATION (cont)ITEM EXPANSI O N RANGE UNITS DEFAULTCCN TABLE/S u b --- T A B L ECCN POINTPAGENO

85APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — TIME CLOCKITEM EXPANSION RANGE UNITS DEFAULTCCN TABLE/S u b --- T A B L ECCN POINTTIME CLOCK CONFIGU

86APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — OPERATING MODESITEM EXPANSION RANGE UNITSCCN TABLE/S u b --- T A B L ECCN POINTCCNWRITESTATUSDISPLA

87APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — OPERATING MODES (cont)ITEM EXPANSION RANGE UNITSCCN TABLE/S u b --- T A B L ECCN POINTCCNWRITESTATUS

88APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — OPERATING MODES (cont)ITEM EXPANSION RANGE UNITSCCN TABLE/S u b --- T A B L ECCN POINTCCNWRITESTATUS

89APPENDIX A — LOCAL DISPLAY AND CCN TABLESMODE — OPERATING MODES (cont)ITEM EXPANSION RANGE UNITSCCN TABLE/S u b --- T A B L ECCN POINTCCNWRITESTATUS

9CONTROLS QUICK SET--UPThe following information will provide a quick guide to setting upand configuring the 48/50HC series units with ComfortLinkcont

90APPENDIX B — CONTROL MODES WITH Humidi--MiZer SYSTEM AND ECONOMIZERThermostat input shown for cooling demand (versus temperaturesensor and set poin

91APPENDIX C — VARIABLE FREQUENCY DRIVE (VFD)On units equipped with supply fan VFDs, the indoor fan motor iscontrolled by a 3-phase VFD. The supply fa

92Table 27 – VFD Parameters Configured by Factory or VFD KeypadParameter Group Parameter Title ABB Parameter HVAC Default CARRIEROptions COMM PROT SEL

93Table 31 – VFD Motor Default ConfigurationsUNIT SIZE(Digits7&8)UNITVOLTAGE(Digit 12)UNITSTATICOPTION(Digit 10)COMFORTLINK CCN POINT (DISPLA Y ME

94Table 31 — VFD Motor Default Configurations (cont)UNIT SIZE(Digits7&8)UNITVOLTAGE(Digit 12)UNITSTATICOPTION(Digit 10)COMFORTLINK CCN POINT (DISP

95VFD DiagnosticsThe drive detects error situations and reports them using:1. Green and red LEDs on the body of the drive (located underthe keypad)2.

96Table 32 — FAULT CODES (cont)FAULTCODEFAULT NAME IN PANEL DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION11 ID RUN FAIL The motor ID run was not compl

97Table 32 — FAULT CODES (cont)FAULTCODEFAULT NAME IN PANEL DESCRIPTION AND RECOMMENDED CORRECTIVE ACTION1008PAR PFA MODEParameter values are inconsis

98CONTROL SET POINT AND CONFIGURATION LOGMODEL NO.:SERIAL NO.:DATE:TECHNICIAN:SOFTWARE VERSIONSMBB: CESR131504----_ _ECB: CESR131249----_ _MARQ: CESR1

99MODE — CONFIGURATION (cont)ITEM EXPANSI O N RANGE UNITS DEFAULTCCN TABLE/S u b --- T A B L ECCN POINT ENTRYI.FAN INDOOR FAN CONFIG AFAN_CFGFTYP In d