Carrier WEATHERMAKER 48J Started Manual

Also see for 48AJ: Installation, Start-Up and Service Instructions Installation instructions Operation and service guide Operating and service guide

CompensatedStartsectionformoreinformation.A setting of0 minutes indicates Temperature Compensated Start in Coolingis not permitted.Temperature Compensated Start Heating Factor (T(_.H) --This factor is used in the equation of the Temperature Compen-sated Start Time Bias for heating. Refer to the TemperatureCompensated Start section for more information. A setting of0 minutes indicates Temperature Compensated Start in Heatingis not permitted.Fan Fail Shuts Downs Unit (SFS.S) -- This configurationwill determine whether the unit should shut down on a supplyfan status fail or simply alert the condition and continue to run.If set to YES, then the control will shut down the unit and sendout an alarm if supply fan status monitoring fails. If set to NO,the control will not shut down the unit if supply fan status mon-itoring fails but the control will send out an alert.Fan Status Monitoring (SFS.M) -- This configuration selectsthe type of fan status monitoring to be performed.0 - NONE -- No switch or monitoring1 - SWITCH --Use of the fan status switch2 - SP RISE -- Monitoring of the supply duct pressure.VAV Unoccupied Fan Retry Time (VAES) -- Machine con-trol types 1 and 2 (VAV-RAT, VAV-SPT) monitor the return-airtemperature during unoccupied periods to determine if there isa valid demand for heating or cooling before initiating an unoc-cupied heating or cooling mode. If the routine runs but con-cludes a valid demand condition does not exist, then the pro-cess is not permitted for the period of time defined by this con-figuration. Reducing this value allows a more frequent re-sampling process. Setting this value to zero will prevent anysampling sequence.Unit Size (SIZE) -- There are several unit sizes (tons) for theA Series control. Make sure this configuration matches the sizecalled out by the model number of the unit. This is important asthe cooling stage tables are directly determined based on thisconfiguration.Discharge Pressure Transducers (DRXR)-- This configurationconfigures the unit for use with discharge pressure transducers.The 48/50A2,A3,A4,A5 units will be automatically configuredfor discharge pressure transducers and DRXR should be set toYes.Suction Pressure Transducer Type (SRXR) -- This configu-ration specifies the type of suction pressure transducer that isbeing used. Set SRXR to 0 for support of a pressure transducerwith a range of 0 to 135 psig. Set SRXR to 1 for support of apressure transducer with a range of 0 to 200 psig.NOTE: The 48/50A2,A3,A4,A5 units do not require a changeto the SRXR factory default setting.Refrigerant Type (RFG 7") -- This configuration specifies thetype of refrigerant used in the unit. Configuration RFG T is setto 0 if the refrigerant used is R-22. Configuration RFG T is setto 1 if the refrigerant used is R-410A. Do not change thissetting.Condenser Type (CND./3 -- This configuration specifies thetype of condenser installed in the unit. Configuration CND. T isset to 0 if the condenser is a round tube, plate fin coil (RTPF).Configuration CND. T is set to 1 if the condenser is a micro-channel heat exchanger coil (MCHX).MAT Calc Config (MAI:S) -- This configuration gives theuser three options in the processing of the mixed-air tempera-ture (MAT) calculation:• MAT.S = 0There will be no MAT calculation.• MA_S=IThe control will attempt to learn MAT over time. Any timethe system is in a vent mode and the economizer stays at aparticular position for long enough, MAT is set to equalEDT. Using this, the control has an internal table whereby itcan more closely determine the true MAT value.MAT.S = 2The control will not attempt to learn MAT over time.To calculate MAT linearly, the user should reset the MATtable entries by setting MAT.R to YES. Then set MAT.S = 2.The control will calculate MAT based on the position of theeconomizer, outside-air temperature, and return-airtemperature.To freeze the MAT table entries, let the unit run withMAr.S= 1. Once sufficient data has been collected, change MAT.S= 2. Do not reset the MAT table.ITEMUNITC.TYPCVFNRM.CFCEMTCS.CTCS.HSFS.SSFS.MVAVSSIZEDP.XRSP.XRRFG. TCND. TMAT.SMAT.RMAT.DALTIDLAYSTATAUX.RSENSSPT.SSP.O.SSP.O.RRRH.SFLT.STable 43 -- Unit ConfigurationEXPANSIONUNIT CONFIGURATIONMachine Control TypeFan Mode (O=Auto, l=Cont)Remote Switch ConfigCEM Module InstalledTemp.Cmp.Strt.Cool FactrTemp.Cmp.Strt.Heat FactrFan Fail Shuts Down UnitFan Stat Monitoring TypeVAV Unocc.Fan Retry TimeUnit Size (20-60)Discharge Press. TransducersSuct. Pres. Trans. TypeREFRIG: 0=R22, 1=R410ACND HX TYP: O=RTPE I=MCHXMAT Calc ConfigReset MAT Table Entries?MAT Outside Air DefaultAltitude ........ in feet:Startup Delay TimeTSTAT-Both Heat and CoolAuxiliary Relay ConfigINPUT SENSOR CONFIGSpace Temp SensorSpace Temp Offset SensorSpace Temp Offset RangeReturn Air RH SensorFilter Stat.Sw.Enabled ?[ RANGE I UNITS [ CCN POINT I DEFAULTS1-60-10-3Yes/No0 - 600 - 60Yes/No0-20 - 72020 - 60Yes/No0-10-10-10-2Yes/No0-1 O00 - 600000 - 900Yes/No0-3Enable/DisableEnable/Disable1 -10Enable/DisableEnable/Disableminminmin%secCTRLTYPEFAN MODERMT/NCFGGEM BRDTCSTCOOLTCSTHEATSFS SHUTSFS MONSAMPMINSUNITSIZEDP TRANSSPXRTYPEREFRIG TCOILTYPEMAT SELMATRESETMATOADOSALTITUDEDELAYTSTATALLAUXRELAYSPTSENSSPTOSENSSPTO RNGRARH-SENSFLTS_ENA410No00No05020No0Unit dependentUnit dependent1No2000No0DisableDisable5DisableDisable36