Carrier 50HCQ04---12 User Manual

48/50TC04---28, 50TCQ04---1248/50HC04---14, 50HCQ04---12F acto r y Ins talled O ptio nR T U --- O P E NCont ro ls , St art---Up, Operat io nand Tro ub

10C10821Fig. 10 -- Enthalpy Switch and Sensor WiringCommunication Wiring--ProtocolsGeneralProtocols are the communication languages spoken bycontrol d

11SW3 Protocol SelectionPROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1BACnet MS/TP(Master)Unused OFF OFF OFF ON OFF Select Baud Select BaudModbus(Slave)Unus

12C10817Fig. 14 -- LON--OC and LON Network WiringLocal AccessBACview6HandheldThe BACview6is a keypad/display interface used toconnect to the RTU--OPEN

13START--UPIMPORTANT: Follow the base unit’s start-up sequencedocumented in its specific instructions. Use the baseunit’s start-up check list when per

14Dehumidification TestFor units with the factory Reheat option, thedehumidification relay is used to change the output statusto operate the circuits

15Vent Dmpr Pos / DCV Min Pos – Minimum damperposition for ventilation during the occupied periodRange = 95-150_F Default = 120_FDCV Max Vent Damper P

16Input 5 -- This input is a discrete input and can beconfigured to be one of six different functions: NoFunction, Fire Shutdown, Fan Status, Filter S

17USERPWThis submenu screen allows you to change the userpassword to a four number password of choice. The Userpassword change screen is only accessib

18CoolingThe compressor outputs are controlled by the CoolingControl PID Loop and Cooling Stages Capacity algorithm.They will be used to calculate the

19If all of the above conditions are met, the controller uses aPID logic loop to energize or de--energize heat outputs tosatisfy the heat demand. If t

2SAFETY CONSIDERATIONSInstallation and servicing of air-conditioning equipmentcan be hazardous due to system pressure and electricalcomponents. Only t

20Optimal StartThe RTU--OPEN may utilize Optimal Start, which adjuststhe effective setpoints to achieve the occupied setpointsby the time scheduled oc

21TROUBLESHOOTINGGeneralThe RTU--OPEN controller acts as an intelligentimbedded thermostat to the rooftop unit, but can bemonitored and controlled fro

22C10825Fig. 16 -- Example ModstatCommunication LED’sThe LED’s indicate if the controller is speaking to thedevices on the network. The LED’s should r

23Table 4 – RTU--OPEN AlarmsPOINT NAMEBACnet ObjectNAMEACTION TAKEN BYCONTROLRESET METHOD PROBABLE CAUSESafety Chain safety_alarm Immediate Shutdown A

24AlarmsAlarms are provided to indicate a possible problem withthe controller or unit. Alarms can be checked through anetwork and/or the local access

25The following values are related to the Space Temperaturealarm:Alarming Temperature – This variable displays thevalue of the space temperature that

26Airside Linkage AlarmThis alarm indicates that RTU-OPEN was connected to azoned system called Linkaget and it lostcommunications with its linkage ma

27APPENDIX A -- USER INTERFACE MENUSField Assistant NavigationPropertiesEquipmentStatusConfigurationUnit ConfigurationSetpointsAlarm ConfigurationServ

28APPENDIX A -- USER INTERFACE MENUS (CON’T)Standby BACview Screen and Login ScreenBACview MENU POINT NAME BACnet OBJECT VALUESTANDBY R T U --- O P E

29APPENDIX A -- USER INTERFACE MENUS (CON’T)Status MenusBACview MENU POINT NAME BACnet OBJECT RANGEFIELD ASSISTANTMENUHOME Select function below Prope

3C10818Fig. 1 -- RTU--OPEN Control Module

30APPENDIX A -- USER INTERFACE MENUS (CON’T)Configuration MenusBACview MENU POINT NAMEBACnetOBJECTRANGE DEFAULT FIELD ASSISTANT MENUHOME Select functi

31APPENDIX A -- USER INTERFACE MENUS (CON’T)Configuration Menus (con’t)BACview MENU POINT NAMEBACnetOBJECTRANGE DEFAULT FIELD ASSISTANT MENUHOME Selec

32APPENDIX A -- USER INTERFACE MENUS (CON’T)Configuration Menus (con’t)BACview MENU POINT NAMEBACnetOBJECTRANGE DEFAULT FIELD ASSISTANT MENUHOME Selec

33APPENDIX A -- USER INTERFACE MENUS (CON’T)Configuration Menus (con’t)BACview MENU POINT NAMEBACnetOBJECTRANGE DEFAULT FIELD ASSISTANT MENUHOME Selec

34APPENDIX A -- USER INTERFACE MENUS (CON’T)Maintenance MenuBACview MENU POINT NAME BACnet OBJECT RANGEFIELD ASSISTANTMENUHOME Select function below P

35APPENDIX A -- USER INTERFACE MENUS (CON’T)Alarm MenusBACview MENU POINT NAME BACnet OBJECT RANGEFIELD ASSISTANTMENUHOME Select function below Proper

36APPENDIX B -- THIRD PARTY POINTS LIST(IN ALPHABETICAL ORDER)BACnet Modbus N2 LON WorksPoint NameRead/WriteBACnet PointNameOBJECTIDRegisterTyp eRegis

37APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)(IN ALPHABETICAL ORDER)BACnet Modbus N2 LON WorksPoint NameRead/WriteBACnet PointNameOBJECTIDRegisterTy

38APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)(IN ALPHABETICAL ORDER)BACnet Modbus N2 LON WorksPoint NameRead/WriteBACnet PointNameOBJECTIDRegisterTy

39APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)(IN ALPHABETICAL ORDER)BACnet Modbus N2 LON WorksPoint NameRead/WriteBACnet PointNameOBJECTIDRegisterTy

4Table 1 – RTU--OPEN Inputs and OutputsPOINT NAMEBACnet OBJECTNAMETYPE OF I/OCONNECTION PINNUMBER(S)DEDICATED INPUTSSpace Temp / Zone Temp zone_temp A

40APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)(IN ALPHABETICAL ORDER)BACnet Modbus N2 LON WorksPoint NameRead/WriteBACnet PointNameOBJECTIDRegisterTy

41RTU--OPEN START--UP SHEETRTU Model Number: Date:RTU Serial Number:Performed by:RTU--- OPEN Software Version: Company:Protocol and Boad Rate: Network

42CONFIGURATION POINTS (CON’T)BACviewMENUPOINT NAMEBACnetOBJECTRANGE DEFAULT ENTRYHOME Select function belowCONFIG CONFIGURATIONUNITUNIT CONFIGURATION

43CONFIGURATION POINTS (CON’T)BACviewMENUPOINT NAMEBACnetOBJECTRANGE DEFAULT ENTRYHOME Select function belowCONFIG CONFIGURATIONINPUTINPUT CONFIGURATI

44CONFIGURATION POINTS (CON’T)BACviewMENUPOINT NAMEBACnetOBJECTRANGE DEFAULT ENTRYHOME Select function belowCONFIG CONFIGURATIONSERVICESERVICE CON FIG

5C10819Fig. 2 -- Typical Factory Option Wiring

6Resistive Non--Communicating Sensor WiringFor sensor with setpoint adjustment up to 500 ft (152m),use three-conductor shielded cable 20 gauge wire to

7J2012REDBLKREDREDBLKBLKBLKREDBLKREDSENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4J20REDBLKREDBLKSENSOR 2SENSOR 1REDREDBLKSENSOR 3SENSOR 4BLKBLKREDREDREDBLKBLKSE

8Relative Humidity Sensors (Space or DuctMounted)The accessory space humidity sensor or duct humiditysensor is used to measure the relative humidity o

9Relative Humidity Sensor(Polarized Male Connector)J4-1 or J4-4 + 24 VDC Supply VoltageJ4-2 or J4-5 (-) 4 to 20 mA Current Loop Outputto RTU-OPEN4-20