Table of Contents
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48/50TC04---30, 50TCQ04---24
48/50HC04---28, 50HCQ04---12
48/50LC04---26
Factory Installed Option
RTU Open
Multi ---Protocol Controller
TABLE OF CONTENTS
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Controls, Start---Up, Operation
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Table of Contents
Troubleshooting
Related Manuals for Carrier 48/50HC04-28
Summary of Contents for Carrier 48/50HC04-28
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Page 1: Table Of Contents
48/50TC04---30, 50TCQ04---24 48/50HC04---28, 50HCQ04---12 48/50LC04---26 Factory Installed Option RTU Open Multi ---Protocol Controller Controls, Start---Up, Operation and Troubleshooting TABLE OF CONTENTS Dehumidification Test ......Power Exhaust Test . -
Page 2: Safety Considerations
....efficiency. RTU Open enables the unit to run in 100% stand- - alone control mode, Carrier’s i- - Vu Open network, RTU OPEN START- -UP SHEET . - Page 3 Board Power (AO-1) 0-10VDC 4-20mA BO-1 BO-2 BO-3 BO-4 BO-5 VFD Output AO-2 BO-6 (2-10V) BO-6 3-Volt BO-7 (H) Humidimizer Lithium Battery BO-7 (Reversing Valve/High Speed Fan/Y3) BO-8 BO-8 (Power Exhaust) LonWorks Option Card Port Network Comm Example set for BACnet MS/TP and 76.8K baud (1, 2, and 4 ON)
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Page 4: Sensors And Accessories
There are 2 types of space temperature sensors available S Return air enthalpy sensor (33CSENTSEN) required for from Carrier, resistive input non-communicating (T55, T56, differential enthalpy control and T59) and Rnet communicating (ZS- - CAR, ZS- - C- - CAR,... - Page 5 C14119 Fig. 2 - - Typical Factory Option Wiring - - 50LC 14- - 26 Shown...
- Page 6 C14146 Fig. 3 - - Typical Factory Option Wiring - - 48LC 04- - 06 Shown...
- Page 7 C13768 Fig. 4 - - Typical Factory Option Wiring - - 48TC 17- - 30 Shown...
- Page 8 C13668 Fig. 5 - - Typical Factory Option Wiring - - 50HC 17- - 28 Shown...
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Page 9: Sensor Averaging
Resistive Non- - Communicating Sensor Wiring Rnet Communicating Sensor Wiring For sensor with setpoint adjustment up to 1000 ft (305m), The Rnet bus allows local communication with the RTU use three-conductor shielded cable 20 gauge wire to Open, including communicating sensors. The Rnet bus connect the sensor to the controller. - Page 10 Combination Temperature and CO Sensor If using a combination temperature and CO sensor (33ZCT55CO2- - 02 or 33ZCT56CO2- - 02), refer to the installation instructions provided with the sensor. SENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4 SPACE TEMPERATURE AVERAGING — 4 SENSOR NON-COMMUNICATING APPLICATION SENSOR 3 SENSOR 1 SENSOR 2...
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Page 11: Relative Humidity Sensors (Space Or Duct Mounted)
Relative Humidity Sensors (Space or Duct Humidistat Mounted) The accessory humidistat provides the RTU Open insight to the relative humidity in the space. The humidistat reads The accessory space humidity sensor or duct humidity the RH level in the space and compares it to its setpoint to sensor is used to measure the relative humidity of the air operate a dry contact. -
Page 12: Fire Shutdown
J4-1 or J4-4 + 24 VDC Supply Voltage J4-2 or J4-5 (-)4 to 20 mA Current Loop Output to RTU Open Relative Humidity Sensor (Polarized Male Connector) SPAN ZERO 4-20 GND 0-5V 0-10V C12756 Fig. 12 - - Duct Relative Humidity Sensor Typical Wiring To wire return air enthalpy sensor:--MP use to configure Filter Status. -
Page 13: Communication Wiring- -Protocols
Building Automation System Protocols are the communication languages spoken by i- - Vu is a Carrier front-end and Building Automation control devices. The main purpose of a protocol is to System (BAS). It is a web based network system that uses communicate information in the most efficient method a native BACnet over MS/TP communication protocol. -
Page 14: Modbus
SW3 Protocol Selection PROTOCOL BACnet MS/TP Unused Select Baud Select Baud (Master) Modbus Unused Select Baud Select Baud (Slave) Unused (Slave) LonWorks Unused NOTE: DS = Dip Switch BACnet MS/TP SW3 example shown Baud Rate Selections BAUD RATE 9600 19,200 38,400 76,800 C07166... -
Page 15: Local Access
LON OC Rev.4 Network Connector C12750 Fig. 17 - - LON- - OC and LON Network Wiring Local Access Wall Mounted Equipment Touch Field Assistant The Equipment Touch is a wall mounted interface used to Field Assistant is a computer program included with the connect to the RTU Open to access the control purchase of the Tech Tool Kit (USB-TKIT). -
Page 16: Start- -Up
START- -UP from the network, or from the Equipment or System Touch. Once turned ON, other entries may be made with IMPORTANT: Follow the base unit’s start-up sequence the display or through the network. To turn Service Test documented in its specific instructions. Use the base unit’s on, change the value of Test Mode to ON, to turn Service start-up check list when performing the start-up. -
Page 17: Power Exhaust Test
Power Exhaust Test DCV Max Ctrl Setpoint – The difference between indoor and outdoor CO level which results in maximum This point allows the board’s power exhaust (PE) output ventilation damper position. to be manually turned On (Enable) and Off (Disable). Range = 0-9999ppm Default = 650ppm Power Exhaust test can operate simultaneously with other... -
Page 18: Inputs
CO sensor before a door alarm is generated. NOTE: For Inputs 1 & 2, if using Carrier air quality Range = 0 to 3600 seconds Default = 60 seconds sensors do not use 24Vdc from RTU Open board. External Setpoint Adjustment –... -
Page 19: Service Configuration
Input 5 - - This input is a discrete input and can be NOTE: When unit type is set to LC WeatherExpert other configured to be one of six different functions: No Function, configuration settings in the Service Configuration menu Fire Shutdown, Fan Status, Filter Status, Remote Occupancy, will become hidden from user’s view. -
Page 20: Operation
Number of Heat Stages – Indicates how many heat Outdoor CO Sensor Value @ Min mA – Sets the outdoor stages are available for use. See configuration in value when the board reads 4 mA at input 1 or 2. Appendix A for details on specific unit configuration. -
Page 21: Indoor (Supply) Fan
switch input. Inputs 3, 5, 8, and 9 on plug J5 can be S Outdoor Air Temperature, if valid, is greater than the hard-wired to command the unit’s occupancy. The Cooling Lockout Temperature setpoint. Occupancy Contact point show the status as on or off, on S Indoor Fan is ON. -
Page 22: Supply Fan
Supply Fan Economizer The RTU Open supply fan may be configured for 1 of 3 The Economizer dampers are used to provide free cooling Fan Control modes: when the outside conditions are suitable and Indoor Air Quality, if optional CO sensor is installed. -
Page 23: Space Air Quality
The sequence of operation for economizer cooling is the space of contaminates just prior to the beginning of the same with or without an enthalpy switch, except that an occupied period. enthalpy switch imposes one more validation on the The following conditions must be true for pre- - occupancy suitability of outside air for economizer cooling. -
Page 24: Dehumidification
allowing more outdoor air into the space depending on the Unocc Free Cooling. In this mode the damper is utilized relationship of the indoor air quality to the differential to bring in outdoor air for free cooling during unoccupied setpoint. If all the above conditions are true, the IAQ periods. -
Page 25: Fan Status
Fan Status S optimal start data The VVT Master performs mathematical calculations and Fan Status may be configured on any unused binary input algorithms on the data and then sends the composite channel. A typical application would be an airflow switch, information to the air source. -
Page 26: Thermistor Troubleshooting
lines of a Modstat is shown in Fig. 19. The application CAUTION software version shows the current running software of the board. In this case the rtum2_iv6- - 3_06_20140403 refers UNIT OPERATION HAZARD to RTU Open software version 3_06_20140403. The last 8 digits of the number refer to a date (YYYYMMDD). - Page 27 Table 3 – LED’s The LED’s on the RTU Open show the status of certain functions If this LED is on... Status is... Power The RTU Open has power The RTU Open is receiving data from the network segment The RTU Open is transmitting data over the network segment The binary output is active The Run and Error LED’s indicate control module and network status If Run LED shows...
- Page 28 Table 4 - - RTU Open Alarms (cont) BACnet Object ACTION TAKEN BY POINT NAME RESET METHOD PROBABLE CAUSE NAME CONTROL Indoor Air Quality Sensor iaq_sensor_fail No IAQ Operation Automatic Sensor reading is out of range. Bad sensor, bad wiring, failure to receive Network or Linkage RH value, or sensor configured incorrectly.
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Page 29: Alarms
Alarms if the SPT value from the Network or Airside Linkage is no longer being received. When this occurs the Unit Status will Alarms are provided to indicate a possible problem with be Shutdown and the System Mode will be Run. Sensor, the controller or unit. - Page 30 Cooling, heating, and supply fan operation continues. two inputs will be disabled as inputs. This alarm will However, the controller’s IAQ control function is disabled automatically be cleared when configuration is corrected. until the fault condition is corrected. An example of this would be: Input 1 = IAQ Sensor, input OAQ Sensor 2 = IAQ Sensor;...
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Page 31: Performance
runtime accumulator by setting the maintenance point every 24 hours at midnight if Save Performance Data Reset Filter Runtime Alarm to On, back to Off, and Daily is set to Enable. clicking the OK button after each setting. Setting unit Heating Utilization configuration Filter Service Alarm Timer value to 0 The amount of time the equipment has operated in the... - Page 32 Heating Utilization Third Party Networking The value of the Heating Utilization when the current Third party communication and networking troubleshooting performance data was last reset. should be done by or with assistance from the front end 3rd party technician. A Module Status Report (Modstat) can be Previous High OAT run from Field Assistant or Equipment Touch (see Table 5 to The value of the Recorded High OAT when the current...
- Page 33 APPENDIX A - - USER INTERFACE MENUS Field Assistant Navigation Properties Control Program Status Configuration Unit Configuration Setpoints Alarm Configuration Service Configuration Maintenance Performance Alarms Linkage C14143...
- Page 34 APPENDIX A - - USER INTERFACE MENUS (CON’T) Access Level Equipment Touch Menu 3=ADMIN POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu 2=USER 1=No PW STATUS RTU Properties Menu> 3, 2, 1 Equipment Status mode_status 1=Disabled Properties>Control Program Status 2=Test >Status 3=Run...
- Page 35 APPENDIX A - - USER INTERFACE MENUS (CON’T) Access Level Equipment Touch Menu 3=ADMIN POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu 2=USER 1=No PW INPUT CONFIGURATION RTU Properties Menu> Input 1 Function ai1_function 1=No Sensor IAQ Sensor Properties>Control Program> Startup Wizard 2=IAO Sensor Configuration>...
- Page 36 APPENDIX A - - USER INTERFACE MENUS (CON’T) Access Level Equipment Touch Menu 3=ADMIN POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu 2=USER 1=No PW SETPOINT RTU Properties Menu> Occupied Heating Setpoint occupied_heat_setpoint 40-90 °F Properties>Control Program> Unit Configuration> Configuration>Setpoints Occupied Cooling Setpoint occupied_cool_setpoint...
- Page 37 APPENDIX A - - USER INTERFACE MENUS (CON’T) Access Level Equipment Touch Menu 3=ADMIN POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu 2=USER 1=No PW SERVICE CONFIGURATION RTU Properties Menu> Unit Type unit_type 1=Heat/Cool Heat/Cool (TC/HC models, and LC Properties>...
- Page 38 APPENDIX A - - USER INTERFACE MENUS (CON’T) Access Level Equipment Touch Menu 3=ADMIN POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu 2=USER 1=No PW SERVICE TEST Service Test test_enable Disable/Enable Disable Properties>Control Program> Configuration> Fan Test fan_test Disable/Enable Disable Service Configuration>Service Test High Speed Fan Test...
- Page 39 APPENDIX A - - USER INTERFACE MENUS (CON’T) Access Level Equipment Touch Menu 3=ADMIN POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu 2=USER 1=No PW OCCUPANCY (MAINTENANCE) RTU Properties Menu> BAS On / Off keypad_ovrde 1=Inactive Inactive Properties>Control Program Maintenance (Occupancy) 2=Occupied Maintenance>Occupancy...
- Page 40 APPENDIX A - - USER INTERFACE MENUS (CON’T) Access Level Equipment Touch Menu POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu 3=ADMIN 2=USER 1=No PW ALARMS RTU Properties Menu> 3, 2, 1 Safety Chain safety_alarm Normal/Alarm Properties>Control Program> Alarms Alarms 3, 2, 1 Space Temperature Alarm Status...
- Page 41 APPENDIX B - - THIRD PARTY POINTS LIST RTU Open Protocol Maps BACnet Info Modbus Info N2 Info LonWorks Info Point N2 Network Point Name Units BACnet BACnet Modbus N2 Network Access Modbus Register Type Point SNVT Type SNVT Name Point Name Object ID Register #...
- Page 42 APPENDIX B - - THIRD PARTY POINTS LIST (CON’T) RTU Open Protocol Maps BACnet Info Modbus Info N2 Info LonWorks Info Point N2 Network Point Name Units BACnet BACnet Modbus N2 Network Access Modbus Register Type Point SNVT Type SNVT Name Point Name Object ID Register #...
- Page 43 APPENDIX B - - THIRD PARTY POINTS LIST (CON’T) RTU Open Protocol Maps BACnet Info Modbus Info N2 Info LonWorks Info Point N2 Network Point Name Units BACnet BACnet Modbus N2 Network Access Modbus Register Type Point SNVT Type SNVT Name Point Name Object ID Register #...
- Page 44 APPENDIX B - - THIRD PARTY POINTS LIST (CON’T) RTU Open Protocol Maps BACnet Info Modbus Info N2 Info LonWorks Info Point N2 Network Point Name Units BACnet BACnet Modbus N2 Network Access Modbus Register Type Point SNVT Type SNVT Name Point Name Object ID Register #...
- Page 45 APPENDIX C - - EQUIPMENT TOUCH NAVIGATION SCREENS Home Equipment Touch is a touchscreen device with a 4.3 in. Color LCD display that can be connected to the RTU Open controller to view or change its property values, schedule equipment, view trends and alarms, and more, without having to access the Building Automation system’s server.
- Page 46 RTU Open Properties Show/Hide Configuration C14137 C14136 You can configure Show/Hide conditions for values on the Navigates to the Property pages. following screens: Login with one of the following passwords: S Standby User level - - type user S Home Admin level - - type admin S Snapshot NOTE: Only the buttons that are authorized for a specific...
- Page 48 Catalog No: 48---50LHTCQ---01T Copyright 2014 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 05/14 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: 48--- 50LC--- 7--- 26--- 2T / 48--- 50HCTQ--- 02T...
- Page 49 RTU OPEN START- -UP SHEET RTU Model Number: Date: RTU Serial Number: Performed by: RTU Open Software Version: Company: Protocol and Baud Rate: Network Address: CONFIGURATION POINTS POINT NAME BACnet Object RANGE DEFAULT ENTRY SETPOINT Occupied Heating Setpoint occupied_heat_setpoint 40-90 °F Occupied Cooling Setpoint occupied_cool_setpoint 55-99 °F...
- Page 50 CONFIGURATION POINTS (CON’T) POINT NAME BACnet Object RANGE DEFAULT ENTRY UNIT CONFIGURATION Fan Mode fan_mode 1=Auto Continuous 2=Continuous 3=Always On Power Fail Restart Delay start_delay 0-30 sec Fan Off Delay fan_delay_off 0-180 sec Minimum Cooling SAT sat_cl_min 45-75_F Maximum Heating SAT sat_ht_max 85-150_F Vent Dmpr Pos / DCV Min Pos...
- Page 51 CONFIGURATION POINTS (CON’T) POINT NAME BACnet Object RANGE DEFAULT ENTRY INPUT CONFIGURATION Input 1 Function ai1_function 1=No Sensor IAQ Sensor 2=IAO Sensor 3=OAQ Sensor 4=Space RH Sensor Input 2 Function ai2_function 1=No Sensor No Sensor 2=IAO Sensor 3=OAQ Sensor 4=Space RH Sensor Input 3 Function di3_function 1=No Function...
- Page 52 = These points are not visible when unit type is configured for LC WeatherExpert Catalog No: 48---50LHTCQ---01T Copyright 2014 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 05/14 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.