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580J/558J*04- 30, 548J*04- 24
581J/551J*04- 28, 549J*04- 12
Factory Installed Option
RTU Open
Controls, Start- Up, Operation,
TABLE OF CONTENTS
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Table of Contents
Related Manuals for Bryant 580J 04-30
Summary of Contents for Bryant 580J 04-30
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Page 1: Table Of Contents
580J/558J*04- 30, 548J*04- 24 581J/551J*04- 28, 549J*04- 12 Factory Installed Option RTU Open Controls, Start- Up, Operation, and Troubleshooting TABLE OF CONTENTS Power Exhaust Test ......Economizer Test . -
Page 2: Safety Considerations
NOTE: Lon Works requires addition of LON option card. the unit, and other safety precautions that may apply. Follow all safety codes. Wear safety glasses and work Bryant’s diagnostic display tools such as Field Assistant, gloves. BACview Handheld or Virtual BACview can be used Follow all safety codes. - Page 3 Board Power (AO-1) 0-10VDC 4-20mA DO-6 (H) Dehumidification DO-7 (Reversing Valve/High Speed Fan) DO-8 (Power Exhaust) Lonworks Option Card Port Network Comm Example set for BACnet MS/TP and 76.8K baud (1, 2, and 4 ON) Protocol Selector *Remove SPT (temp input) BACnet, Modbus, or N2 SPT (common) both for 0-5V...
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Page 4: Sensors And Accessories
S Space relative humidity sensor (33ZCSENSRH-02) Space Temperature Sensor (SPT) S Duct relative humidity (33ZCSENDRH-02) SPT sensors available from Bryant are resistive input S Humidistat (--HL--38MG-029) non-communicating (T55, T56, and T59) sensors. These sensors have a variety of options consisting of: timed S Smoke Detectors (CRSMKSEN002A00, override button, set point adjustment, and a LCD screen. - Page 5 C12745 Fig. 2 - Typical Factory Option Wiring...
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Page 6: Co 2 Sensor(S) (Iaq And Oaq)
Resistive Non- Communicating Sensor Wiring Rnet Communicating Sensor Wiring For sensor with setpoint adjustment up to 500 ft (152m), The Rnet bus allows local communication with the RTU use three-conductor shielded cable 20 gauge wire to Open, including field supplied communicating sensors. connect the sensor to the controller. - Page 7 SENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4 SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATION SENSOR 3 SENSOR 1 SENSOR 2 SENSOR 6 SENSOR 4 SENSOR 5 LEGEND Factory Wiring Field Wiring SENSOR 7 SENSOR 8 SENSOR 9 SPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATION C07133 Fig.
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Page 8: Relative Humidity Sensors
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 9: 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. 9 - Duct Relative Humidity Sensor Typical Wiring To wire return air enthalpy sensor:--MP Filter Status... -
Page 10: Communication Wiring- Protocols
BACnet- only controllers. This is the default Bryant possible. Different protocols exist to provide different communications protocol. Each RTU Open module acts as kinds of information for different applications. In the BAS an MS/TP Master. -
Page 11: 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 12: Local Access
LON OC Rev.4 Network Connector C12750 Fig. 14 - LON- OC and LON Network Wiring Local Access Virtual BACview Virtual BACview is a freeware computer program that BACview Handheld functions as the BACview Handheld. The USB Link The BACview is a keypad/display interface used to interface (USB- L) is required to connect a computer to connect to the RTU Open to access the control the RTU Open board. -
Page 13: Start- Up
START- UP Service Test mode has the following changes from normal operation: IMPORTANT: Follow the base unit’s start-up sequence S Outdoor air temperature limits for cooling circuits, documented in its specific instructions. Use the base unit’s economizer, and heating are ignored. start-up check list when performing the start-up. -
Page 14: Dehumidification Test
Dehumidification Test Effective Cooling Setpoint – The current setpoint value cooling operation will control to. units with factory Reheat option, Range = 0-120_F dehumidification relay is used to change the output status Optimal Start - The earliest time prior to occupancy, at to operate the circuits in different Reheat modes. -
Page 15: Inputs
Setpoint Adjustment – Set to enable or disable the setpoint adjustment function of the locally installed space NOTE: For Inputs 1 & 2, if using Bryant air quality sensor. sensors do not use 24Vdc from RTU Open board. External... -
Page 16: Service
Input 5 - This input is a discrete input and can be Economizer Exists – This tells the controller if there is an configured to be one of six different functions: No economizer installed on the unit. Function, Fire Shutdown, Fan Status, Filter Status, Factory Default = NO if no economizer, or YES if Remote Occupancy, or Door Contact. -
Page 17: Clockset
Clockset BAS On/Off This submenu screen allows you to set the date and time When Occupancy Source is set to BAS On/Off, RTU manually. The Daylight Savings Time (DST) can also be Open follows occupancy based on an On/Off command to changed here. -
Page 18: Supply Fan
S Always On - The fan runs continuously regardless of S Heat mode is not active and the time guard between modes equals zero. occupancy or calls for heating and cooling. S If occupied and the SPT > (occupied cool setpoint plus Occupancy can be determined by BACnet schedules, BAS schedules, or in response to a remote occupancy switch. -
Page 19: Power Exhaust
a setpoint that is halfway between the effective cool and If all of the above conditions are met, the controller uses a heat setpoints. If the SAT drops below the cooling low PID logic loop to energize or de- energize heat outputs to supply air setpoint (+ 5_F), the economizer will ramp satisfy the heat demand. -
Page 20: Demand Limit
A compressor safety tripped indicator circuit is available dehumidification output. The output will also de- energize on most Bryant rooftop equipment. A Compressor Safety if the fan relay is de- energized. Alarm indicates that the equipment requires attention. -
Page 21: Troubleshooting
TROUBLESHOOTING Table 2 – Thermistor Resistance vs Temperature Values for Space Temperature Sensor, Supply Air Temperature General Sensor, and Outdoor Air Temperature Sensor The RTU Open controller acts as an intelligent imbedded thermostat to the rooftop unit, but can be monitored and TEMP TEMP RESISTANCE... - Page 22 C10825 Fig. 16 - Example Modstat...
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Page 23: Communication Led's
Communication LED’s The LED’s indicate if the controller is speaking to the devices on the network. The LED’s should reflect communication traffic based on the baud rate set. The higher the baud rate the more solid the LED’s will appear. Table 3 –... - Page 24 Table 4 – RTU Open Alarms BACnet Object ACTION TAKEN BY POINT NAME RESET METHOD PROBABLE CAUSE NAME CONTROL Over load Indoor Fan or Electric Heater Safety Chain safety_alarm Immediate Shutdown Automatic overheat Smoke detected by smoke detector or Fire Shutdown fire_alarm Immediate Shutdown Automatic...
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Page 25: Alarms
Alarms Space Temp Sensor This alarm occurs if the space sensor wired to the RTU Alarms are provided to indicate a possible problem with Open is disconnected or shorted for more than 10 seconds. the controller or unit. Alarms can be checked through a When this occurs the Unit Status will be Shutdown and network and/or the local access device. - Page 26 Low Space Relative Humidity The following values are related to the Space Temperature alarm: This alarm indicates the space humidity falls below the Alarming Temperature – This variable displays the alarm configuration Low Space Humidity Alarm Limit for value of the space temperature that is in alarm and is only 5 minutes.
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Page 27: Third Party Networking
Third party communication and networking troubleshooting For further information about third party networking contact should be done by or with assistance from the front end 3rd Bryant applications engineering. party technician. A Module Status Report (Modstat) can be run from the BACview or Virtual BACview (see Table 5 to Table 5 –... -
Page 28: Appendix A - User Interface Menus
APPENDIX A - USER INTERFACE MENUS Field Assistant Navigation Properties Equipment Status Configuration Unit Configuration Setpoints Alarm Configuration Service Configuration Maintenance Alarms C12770 BACview Navigation NOTE: The Tables in Appendix A describe parameters of each of the menu levels shown below. STANDBY HOME SYSTEM... - Page 29 APPENDIX A - USER INTERFACE MENUS (CON’T) System Settings Menu BACview Menu POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu STANDBY RTU Open System Mode run_status 1=Off 2=Fan Only 3=Economizer 4=Cooling 5=Heating 6=Dehumidification 7=Test 8=Shutdown 9=Unocc Free Cooling (NT- 10=Fire Shutdown 11=IAQ Override 12=Pre- OCC Purge...
- Page 30 APPENDIX A - USER INTERFACE MENUS (CON’T) Status Menu BACview Menu POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu STATUS HOME>STATUS Equipment Status mode_status 1=Disabled Properties>Equipment> 2=Test Status 3=Run System Mode run_status 1=Off 2=Fan Only 3=Economizer 4=Cooling 5=Heating 6=Dehumidification 7=Test 8=Shutdown 9=Unocc Free Cooling (NTFC)
- Page 31 APPENDIX A - USER INTERFACE MENUS (CON’T) Configuration Menus BACview Menu POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu UNIT CONFIGURATION HOME>CONFIG> Properties>Equipment> UNIT UNIT CONFIGURATION Configuration> 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...
- Page 32 APPENDIX A - USER INTERFACE MENUS (CON’T) Configuration Menus (con’t) BACview Menu POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu HOME>CONFIG> Properties>Equipment> UNIT>INPUT Configuration> INPUT CONFIGURATION Unit Configuration Input 1 Function ai1_function 1=No Sensor No Sensor 2=IAO Sensor 3=OAQ Sensor 4=Space RH Sensor Input 2 Function ai2_function...
- Page 33 APPENDIX A - USER INTERFACE MENUS (CON’T) Configuration Menus (con’t) BACview Menu POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu SETPOINT HOME>CONFIG> Occupied Heating Setpoint occupied_heat_setpoint 40- 90 ° F Properties>Equipment> SETPOINT Configuration>Setpoints Occupied Cooling Setpoint occupied_cool_setpoint 55- 99 ° F Unoccupied Heating Setpoint unoccupied_heat_set- 40- 90 °...
- Page 34 APPENDIX A - USER INTERFACE MENUS (CON’T) Alarm Menus BACview Menu POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu ALARMS HOME>ALARM Properties>Equipment> CURRENT ALARMS Alarms Safety Chain safety_alarm Normal/Alarm Fire/Smoke Shutdown fire_alarm Normal/Alarm Supply Fan Failure sfan_fail_alarm Normal/Alarm Supply Fan in Hand sfan_hand_alarm Normal/Alarm Compressor Safety...
- Page 35 APPENDIX A - USER INTERFACE MENUS (CON’T) Service Menu BACview Menu POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu SERVICE HOME>CONFIG> Properties>Equipment> SERVICE SERVICE CONFIGURATION Configuration> Service Configuration Unit Type unit_type 1=Heat/Cool Heat/Cool (580/558J and 581/55J 2=HP O/B Ctrl models) 3=HP Y1/W1 Ctrl HP Y1/W1 Ctrl (548J and 549J models)
- Page 36 APPENDIX A - USER INTERFACE MENUS (CON’T) Maintenance Menu BACview Menu POINT NAME BACnet Object RANGE DEFAULT Field Assistant Menu MAINTENANCE HOME>MAINT Properties>Equipment> UNIT MAINTENANCE Maintenance Occupancy Status occ_status Occupied/Unoccupied Temp Compensated Start tcs_status Inactive/Active - Or- - Or- Learning Adaptive Start aos_status Pre Occupancy Purge purge...
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Page 37: Appendix B - Third Party Points List
APPENDIX B - THIRD PARTY POINTS LIST (in alphabetical order) BACnet Modbus Lonworks Read/ Network Network Point Name Register Register Write Point Point BACnet Point Name Object ID SNVT Type SNVT Name Type Type Address Active Compressor Stages comp_run AV:2020 float value 40031 SNVT_count_inc (9) - Page 38 APPENDIX B - THIRD PARTY POINTS LIST (CON’T) (in alphabetical order) BACnet Modbus Lonworks Read/ Network Network Point Name Register Register Write Point Point BACnet Point Name Object ID SNVT Type SNVT Name Type Type Address High Space Temperature spt_hi_alarm BV:7011 discrete in 10035...
- Page 39 APPENDIX B - THIRD PARTY POINTS LIST (CON’T) (in alphabetical order) BACnet Modbus Lonworks Read/ Network Network Point Name Register Register Write Point Point BACnet Point Name Object ID SNVT Type SNVT Name Type Type Address Setpoint / Cooling Occupied occ_cl_stpt AV:3001 float value...
- Page 40 Catalog No: TS- 5580J- 01 2012Bryant Heating & Cooling Systems. D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 11/12 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: New...
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Page 41: Rtu Open Start- Up Sheet
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 BACview Menu POINT NAME BACnet Object RANGE DEFAULT ENTRY SETPOINT HOME>CONFIG> Occupied Heating Setpoint occupied_heat_setpoint 40- 90 °... - Page 42 CONFIGURATION POINTS (CON’T) BACview Menu POINT NAME BACnet Object RANGE DEFAULT ENTRY UNIT CONFIGURATION HOME>CONFIG> UNIT CONFIGURATION UNIT 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 °...
- Page 43 CONFIGURATION POINTS (CON’T) BACview Menu POINT NAME BACnet Object RANGE DEFAULT ENTRY HOME>CONFIG> INPUT CONFIGURATION UNIT>INPUT Input 1 Function ai1_function 1=No Sensor No Sensor 2=IAO Sensor 3=OAQ Sensor 4=Space RH Sensor Input 2 Function ai2_function 1=No Sensor 1 (No FIOP) 2=IAO Sensor 2 (FIOP) 3=OAQ Sensor...
- Page 44 CONFIGURATION POINTS (CON’T) BACview Menu POINT NAME BACnet Object RANGE DEFAULT ENTRY SERVICE HOME>CONFIG> SERVICE CONFIGURATION SERVICE Unit Type unit_type 1=Heat/Cool Heat/Cool (580/558J and 581/55J models) 2=HP O/B Ctrl HP Y1/W1 Ctrl (548J and 549J models) 3=HP Y1/W1 Ctrl Compressor Stages comp_stages One stage/ Two Stage One Stage (sizes 04- 07, and A08- A12)
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