158 | Carrier 48/50AJ specs

APPENDIX B — CCN TABLES (cont)

MAINTENANCE DISPLAY TABLES (cont)

TABLE	DISPLAY NAME	RANGE	UNITS	POINT NAME	WRITE STATUS
ENTHALPY	Outdoor Air Enthalpy			OAE
	Outdoor Air Enthalpy			OAE
	Outside Air Temperature		dF	OAT	forcible
	Outside Air Rel.Humidity		%	OARH	forcible
	Outside Air RH Sensor			OARHSENS	config
	OA Dewpoint Temp Limit		dF	OADEWCFG	config
	OutsideAir DewPoint Temp		dF	OADEWTMP
	OutsideAir Humidty Ratio			OA_HUMR
	OA H2O Vapor Sat.Pressur		"Hg	OA_PWS
	OA H2O Partial.Press.Vap		"Hg	OA_PWS
	Return Air Enthalpy			RAE
	Return Air Temperature		dF	RAT	forcible
	Controlling Return Temp		dF	RETURN_T	forcible
	Return Air Rel.Humidity		%	RARH	forcible
	Return Air Temp Sensor			RATSENS	config
	Return Air RH Sensor			RARHSENS	config
	Altitude……..in feet:			ALTITUDE	config
	Atmospheric Pressure		"Hg	ATMOPRES	config
LINKDATA	Supervisory Element #			SUPE-ADR
	Supervisory Element #			SUPE-ADR
	Supervisory Bus			SUPE-BUS
	Supervisory Block Number			BLOCKNUM
	Average Occup. Heat Stp.		dF	AOHS
	Average Occup. Cool Stp.		dF	AOCS
	Average Unocc. Heat Stp.		dF	AUHS
	Average Unocc. Cool Stp.		dF	AUCS
	Average Zone Temperature		dF	AZT
	Average Occup. Zone Temp		dF	AOZT
	Linkage System Occupied?			LOCC
	Next Occupied Day			LNEXTOCD
	Next Occupied Time			LNEXTOCC
	Next Unoccupied Day			LNEXTUOD
	Next Unoccupied Time			LNEXTUNC
	Last Unoccupied Day			LLASTUOD
	Last Unoccupied Time			LLASTUNC
MILLIAMP	IAQ milliamps		ma	IAQ_MA
	IAQ milliamps		ma	IAQ_MA
	OAQ milliamps		ma	OAQ_MA
	SP Reset milliamps		ma	SPRST_MA
	4-20 ma Demand Signal		ma	DMDLMTMA	forcible
	EDT Reset milliamps		ma	EDTRESMA
	OARH milliamps		ma	OARH_MA
	RARH milliamps		ma	RARH_MA
	BP milliamps		ma	BP_MA
	SP milliamps		ma	SP_MA
MODES	System Mode…………:	ascii text strings
	System Mode…………:	ascii text strings
	HVAC Mode…………..:	ascii text strings
	Control Mode………..:	ascii text strings
	Currently Occupied	On/Off		MODEOCCP
	Timed Override in effect	On/Off		MODETOVR
	DCV resetting min pos	On/Off		MODEADCV
	Supply Air Reset	On/Off		MODESARS
	Demand Limit in Effect	On/Off		MODEDMLT
	Temp.Compensated Start	On/Off		MODETCST
	IAQ pre-occ purge active	On/Off		MODEIQPG
	Linkage Active - DAV	On/Off		MODELINK
	Mech.Cooling Locked Out	On/Off		MODELOCK
	HVAC Mode Numerical Form	0-24		MODEHVAC
OCCDEFME	Current Day, Time & Date:	ascii date & time		TIMEDATE
	Current Day, Time & Date:	ascii date & time		TIMEDATE
	Occupancy Controlled By:	ascii text		OCDFTXT1
		ascii text		OCDFTXT2
		ascii text		OCDFTXT3
	Currently Occupied	Yes/No		MODE_OCC
	Current Occupied Time			STRTTIME
	Current Unoccupied Time			ENDTIME
	Next Occupied Day & Time			NXTOC_DT
	Next Unocc. Day & Time			NXTUN_DT
	Last Unocc. Day & Time			PRVUN_DT
	Current Occup. Period #			PER_NO
	Timed-Override in Effect	Yes/No		OVERLAST
	Timed-Override Duration		hours	OVR_HRS

158

Image 158

Carrier 48/50AJ specifications 158

Contents

Controls, Start-Up, Operation, Service and Troubleshooting Contents Contents Safety Considerations Series Product Line GeneralBasic Control Usage Sents pressing Enter to move into the next level Scrolling Marquee System Pilot User Interface Test START-UP Fan Performance 48AJ,AK020,025 and 48A2,A3020 Units Fan Performance 48AJ,AK027,030 and 48A2,A3025-030 Units Fan Performance 48AJ,AK,A2,A3035 Units Fan Performance 48AJ,AK036 Units Fan Performance 48AJ,AK,A2,A3040 Units Fan Performance 48AJ,AK041 Units Fan Performance 48AJ,AK,A2,A3050 Units Fan Performance 48AJ,AK051 Units Fan Performance 48AJ,AK,A2,A3060 Units Fan Performance 50AJ,AK020,025 and 50A2,A3020 Units Fan Performance 50AJ,AK027,030 and 50A2,A3025-030 Units Fan Performance 50AJ,AKA2,A3035 Units Fan Performance 50AJ,AK036 Units Fan Performance 50AJ,AK,A2,A3040 Units Fan Performance 50AJ,AK041 Units Fan Performance 50AJ,AK,A2,A3050 Units Fan Performance 50AJ,AK051 Units Fan Performance 50AJ,AK,A2,A3060 Units Fan Performance 48AW,AY020,025 and 48A4,A5020 Units Fan Performance 48AW,AY027,030 and 48A4,A5025-030 Units Fan Performance 48AW,AY,A4,A5035 Units Fan Performance 48AW,AY036 Units Fan Performance 48AW,AY,A4,A5040 Units Fan Performance 48AW,AY041 Units Fan Performance 48AW,AY,A4,A5050 Units Fan Performance 48AW,AY051 Units Fan Performance 48AW,AY,A4,A5060 Units Fan Performance 50AW,AY020,025 and 50A4,A5020 Units Fan Performance 50AW,AY027,030 and 50A4,A5025-030 Units Fan Performance 50AW,AY,A4,A5035 Units Fan Performance 50AW,AY036 Units Fan Performance 50AW,AY,A4,A5040 Units Fan Performance 50AW,AY041 Units Fan Performance 50AW,AY,A4,A5050 Units Fan Performance 50AW,AY051 Units Fan Performance 50AW,AY,A4,A5060 Units Motor Limitations Air Quantity Limits 48AJ,AK,AW,AY,A2,A3,A4,A5 Controls Quick Start Air Quantity Limits 50AJ,AK,AW,AY,A2,A3,A4,A5Page Service Test Indoor Air Quality IAQ Options Service Test MLV Third Party Control Demand Controlled Ventilation Control Controls Operation Operating Modes Display Table Expansion Range CCN Point Hvac TYP = 3 TSTAT-MULTI TYP = 6 SPT-2 STG There will be no MAT calculation Unit ConfigurationExpansion Range Units CCN Point Defaults Under Configuration→UNIT Setpoints Machine Dependent ConfigurationsSupply Air Reset Configuration Cooling Configuration Advanced Scroll Temperature Protection Label Are VAV occupied cooling offsets under Setpoints Cool Mode Evaluation Cool/Heat Set Point Offsets Configuration LV.T Stage Sequence Stage Sequence 48/50AJ,AW020-027Stage Sequence 48/50AJ,AW030-060 Stage Sequence 48/50A2,A4030-060 Staging Sequence with Hot Gas Bypass 48/50AK,AY030-060Stage Sequence 48/50A2,A4020-027 Staging Sequence with Hot Gas Bypass 48/50A3,A5030-060 Run Status Mode Trip Helper PCT = MAT EDT/ C.CAP Run Status Cool Display Expansion Range Units CCN Point Write Status Control will not attempt to learn MAT over time Inputs→GEN.I→DL.S1 Inputs→GEN.I→DL.S2 Demand Limit Configuration Expansion Range Units CCN Point Default Condenser Fan Staging FAN Relay 48/50A Unit Size Heating Configuration Occupied Heating Enable OC.EN This configuration Expansion Range Units CCN Default Point Ohsp Uhsp Mode Trip Helper Table Expansion Units CCN Point Unit Size Staged Gas ConfigurationStaged Gas Heat 48AJ,AK,AW,AY Units Unit Model no Staged Gas Heat 48A2,A3,A4,A5 Units Relay Output Stage LED Indication Error Code IGC LED IndicatorsHvac mode = Tempering Vent CapacityPage As an example, the static pressure reset limit SP.LM = Static Pressure Control Configuration Fan Status Monitoring Dirty Filter Switch Points Static Pressure Reset Related PointsFan Status Monitoring Configuration None Outdoor Enthalpy Changeover Economizer Configuration Table Custom Changeover Curve Example SPT 2 Stage Tstat 2 StageSPT Multi-Staging Economizer Run Status Table PE.A PE.B PE.C Building Pressure ConfigurationPower Exhaust Staging BP.CF = PID Expansion Range CCN Write Point Status Indoor Air Quality Control The indoor air quality Trol can also be set up to respond to a discrete IAQ input Described above when DAQ is above the DAQ Fan On SetWill be turned off when DAQ is below the DAQ Fan Off Set IQ.A.F = 2 Fan On Occupied/Unoccupied IAQ IAQ Purge Configuration → IAQ → IAQ.P → IQ.PG Indoor Air Quality Configuration Dehumidification Configuration Expansion Range Units CCN Point Temperature Compensated Start This logic isCarrier Comfort Network CCN System It CCN Configuration Expansion Range Units Point Default Alert Limit Configuration Sensor Trim Configuration Discrete Switch Logic Configuration The SW.LG Display Configuration Time Clock ConfigurationSwitch Logic Configuration Remote Switch Configuration Closed Remote Switch Logic ConfigurationOpen Troubleshooting Time Clock Configuration Compressor Stops on High Pressure Cooling Service AnalysisProblem Solution Compressor does not RUN Compressor Cycles on LOW Pressure Compressor Loses OIL Unit Operates TOO Long or ContinuouslySystem is Noisy Frosted Suction Line Problem Cause Remedy Gas Heating Service AnalysisElectric Heat Service Analysis IGC Service Analysis Logic 5K Thermistor Temperature vs. Resistance SCT Sensors English 5K Thermistor Temperature vs. Resistance SCT Sensors SI 143 Pressure Voltage Psig Drop Pressure Voltage Psig Pressure Voltage Psig Drop 175 503 PCT = MAT EDT/C.CAP Expansion Range Units Point Write Status Auto View of Run Status Display TableEconomizer Run Status Display Table CCN/Linkage Display Table Mode Trip Helper Display TableCooling Information Display Table Compressor Run Hours Display Table Expansion Range Units Point Write Status Tmgd Time Guard Display TableSoftware Version Numbers Display Table Expansion Range Units Point Write Status Vers Alert and Alarm Codes P051 CEM Check for welded contactor Verify CS wiring T122 Circuit a High Saturated Suction Temperature Page Page At Configuration→UNIT→SENS→FLT.S Factory-Installed Components Major System Components 102 103 104 Typical Auxiliary Control Box Wiring Schematic 105 ~~~ ~~~~ 106 107 108 109 110 111 112 Typical Power Schematic 48/50A2,A3,A4,A5060 Unit Shown 113 Typical Controls Option Wiring Schematic 114 115 Typical Small Chassis Component Location Size 020-035 Units 116 Typical Large Chassis Component Locations Size 036-060 Units 117 Main Control Board MBB Inputs and Outputs 118 Economizer Control Board ECB1 Inputs and Outputs 119 Outputs Sfanvfd VAV Control Board ECB2 Inputs and Outputs120 Staged Gas Control Board SCB Inputs and Outputs 121 122 Controls Expansion Board CEM InputsIGC Board Inputs and Outputs 123 Terminal Function Board SW1 SW2 SW3 SW4 ECB1 ECB2 SCB CEM W2 G124 Field Connection Terminal Strips 125 126 IME Hvac 127CID Service 128 Gas Heat Section Details Lubrication Manufacturer Lubricant Evaporator-Fan Motor Replacement Evaporator Fan Service and ReplacementBelt Tension Adjustment To adjust belt tension 131 132 Condenser-Fan AdjustmentRound Tube, Plate Fin Unit Charge Unit Refrigerant Size Liquid Charging Chart 48/50A2,A3,A4,A5020 with R-410A Refrigerant 133 27 Ton Mchx Circuit a Charging Chart 134 Charging Chart 48/50A2,A3,A4,A5030 with R-410A Refrigerant 135 Charging Chart 48/50A2,A3,A4,A5035 with R-410A Refrigerant 136 Charging Chart 48/50A2,A3,A4,A5040 with R-410A Refrigerant Charging Chart 48/50A2,A3,A4,A5050 with R-410A Refrigerant Charging Chart 48/50A2,A3,A4,A5060 with R-410A Refrigerant 138 Gas Valve Part Number EF33CW271 Main Burner Removal Mode RUN Status 140 Appendix a Local Display Tables 141 Description Range Units CCN Point Default 142 Mode Inputs 143 Mode Configuration 144 145 →BP.SP 146 →SC.OV→SPT.O Mode Time Clock 147 Appendix B CCN Tables 148 149 Appendix B CCN TablesStatus Display Tables Tstat 150Display Name Range Units Point Name Write Status Temps Uinputs 151 Name Range Units Point Name Default Allm Config TablesName Range Units Point Name Default Schedovr 152 SERVICE-CONFIG Tables 153 Trim Name Range Units Point Name Default Heat154 Name Range Units Point Name Default Swlg 155 156 Display Name Range Units Point Name Write Status ALARMS01ALARMS02 ALARMS03 ALARMS04 ALARMS05 Compresr Dmandlim Display Name Range Units Point Name Write Status Econmin Maintenance Display Tables157 Ecdiag 158 159 160 161 Appendix C VFD InformationTable a VFD Terminal Designations Over Ride Table B VFD ConfigurationsAppendix C VFD Information Fig. C Standard Display Example Appendix C VFD Information Appendix C VFD Information Table C Fault Codes 166 Table E Maintenance Intervals Table D Alarm CodesReplace the cooling fan Restore power 167 Fig. D Main Fan Replacement Frame Sizes R1-R4 Fig. F Internal Enclosure Fan Replacement 169 Appendix D Mode Selection Process Appendix E UPC Open Controller 171 172 Table a SW3 Protocol Switch Settings For MS/TPTable B Baud Selection Table DS8 DS7 DS6 DS5 DS4 DS3 173 Table C MS/TP Wiring RecommendationsAppendix E UPC Open Controller Rmcorp Wiring Specifications Recommended Vendors and Part Numbers174 CMP 175 Table E LED Status IndicatorsRUN LED Error LED Status LED Status 176 Bacnet Point Name Read Units Default Range Object IDNetwork Points List Object Name Point Appendix E UPC Open Controller Network Points List 177 178 Bacnet Point Name Read Units Default Range Object ID Only 179 180 181 182 Index 183 Copyright 2010 Carrier Corporation Controls SET Point and Configuration LOG Expansion Range Default Entry CL-2 CL-3 CL-4 CL-5 Unit START-UP Checklist PRE-START-UP