Carrier 50HCQ04---12- Manuals

10 Combination Temperature and CO 2 Sensor If using a combination temperature and CO 2 sensor (33ZCT55CO2--02 or 33ZCT56CO2--02), refer to the installation instructions provided with the sensor. LEGEND RED RED BLK BLK J20 1 2 RED BLK BLK RED BLK RED SENSOR 2 SENSOR 3 SENSOR 4 SENSOR 1 SPACE TEMPERAT...

11 Relative Humidity Sensors (Space or Duct Mounted) The accessory space humidity sensor or duct humidity sensor is used to measure the relative humidity of the air within the space or return air duct. The RH reading is used to control the Humidi-MiZer R option of the rooftop unit. For wiring distan...

12 SPAN ZERO 4-20 mA VAC or VDC GND 0-5V or 0-10V 1 2 3 4 5 6 ON J4-1 or J4-4 + 24 VDC Supply Voltage J4-2 or J4-5 (-)4 to 20 mA Current Loop Outputto RTU Open Relative Humidity Sensor(Polarized Male Connector) C12756 Fig. 12 -- Duct Relative Humidity Sensor Typical Wiring To wire return air enthalp...

13 C10821 Fig. 13 -- Enthalpy Switch and Sensor Wiring Communication Wiring--Protocols General Protocols are the communication languages spoken by control devices. The main purpose of a protocol is to communicate information in the most efficient method possible. Different protocols exist to provide...

14 SW3 Protocol Selection PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1 BACnet MS/TP (Master) Unused OFF OFF OFF ON OFF Select Baud Select Baud Modbus (Slave) Unused OFF OFF ON ON OFF Select Baud Select Baud N2 (Slave) Unused OFF OFF OFF ON ON OFF OFF LonWorks Unused ON ON OFF ON OFF OFF ON NOTE:DS = Dip...

15 LON OC Rev.4 Net 1 2 J15 COMM OPTION NetworkConnector C12750 Fig. 17 -- LON--OC and LON Network Wiring Local Access Wall Mounted Equipment Touch The Equipment Touch is a wall mounted interface used to connect to the RTU Open to access the control information, read sensor values, and maintenance. ...

16 START--UP IMPORTANT : Follow the base unit’s start-up sequence documented in its specific instructions. Use the base unit’sstart-up check list when performing the start-up. At the end of this manual there is an additional RTU OpenStart-up Sheet to be completed and included with the baseunit check...

17 Power Exhaust Test This point allows the board’s power exhaust (PE) output to be manually turned On (Enable) and Off (Disable). Power Exhaust test can operate simultaneously with other Service Test Points. Economizer Test This point allows the board’s economizer output to be manually controlled f...

18 DCV Max Vent Damper Pos – This is the greatest position the economizer can open to while trying to control the indoor air quality levels Range = 0 -- 75% open Default = 50% open Supply Fan Service Alarm Timer – The timer set for the Supply Fan Runtime Alarm. After the number of hours set on this ...

19 Input 5 -- This input is a discrete input and can be configured to be one of six different functions: No Function, Fire Shutdown, Fan Status, Filter Status, Remote Occupancy, or Door Contact. This input can also be configured to be either a Normally Open (N/O) or a Normally Closed (N/C) switch. I...

20 Number of Heat Stages – Indicates how many heat stages are available for use. See configuration in Appendix A for details on specific unit configuration. Factory Default = 1 for single heat stage units 2 for dual stage units 0 for cooling only units Continuous Occupied Exhaust – This point tells ...

21 switch input. Inputs 3, 5, 8, and 9 on plug J5 can be hard-wired to command the unit’s occupancy. The Occupancy Contact point show the status as on or off, on is occupied and off is unoccupied. Indoor (Supply) Fan The indoor fan can be configured to operate in three different manors. The configur...

22 Supply Fan The RTU Open supply fan may be configured for 1 of 3 Fan Control modes: S Single -- The fan operates at one speed only and provides on/off operation S Two Speed -- The fan operates at 1 of 2 speeds depending on the mode of operation and load conditions. During fanonly or single stage c...

25 Fan Status Fan Status may be configured on any unused binary input channel. A typical application would be an airflow switch, current sensing relay, or other device that provides a supply fan running verification. Enabling this function displays the supply fan’s status on the equipment graphic. I...

26 UNIT OPERATION HAZARD Power must be ON to the RTU Open when replacing the battery or date, time, and trend data will be lost. CAUTION ! 1. Remove the battery from the controller, making note of the battery’s polarity. 2. Insert the new battery, matching the battery’s polarity with the polarity in...

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 Rx The RTU Open is receiving data from the network segment Tx The RTU Open is transmitting data over the network segment BO# The binary output is active Th...

29 Alarms Alarms are provided to indicate a possible problem with the controller or unit. Alarms can be checked through a network and/or the local access device. All alarms are listed in Table 4 with name, object name, action taken by control, reset method, and possible cause. Some alarms can occur ...

31 runtime accumulator by setting the maintenance point Reset Filter Runtime Alarm to On, back to Off, and clicking the OK button after each setting. Setting unit configuration Filter Service Alarm Timer value to 0 disables the filter service alarm function. Airside Linkage Alarm This alarm indicate...

32 Heating Utilization The value of the Heating Utilization when the current performance data was last reset. Previous High OAT The value of the Recorded High OAT when the current performance data was last reset. Previous Low OAT The value of the Recorded Low OAT when the current performance data wa...

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 48 --- 50L H TC Q --- 01T

41 APPENDIX B -- THIRD PARTY POINTS LIST RTU Open Protocol Maps Point Name Point Access Units BACnet Info Modbus Info N2 Info LonWorks Info BACnet Point Name BACnet Object ID Modbus Register Type Modbus Register # N2 Network Point Type N2 Network Point Address SNVT Type SNVT Name SPT Sensor Read Onl...

45 APPENDIX C -- EQUIPMENT TOUCH NAVIGATION SCREENS 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 Buil...

46 RTU Open Properties C14136 Navigates to the Property pages. Login with one of the following passwords: S User level -- type user S Admin level -- type admin NOTE : Only the buttons that are authorized for a specific password level are visible. Show/Hide Configuration C14137 You can configure Show...

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 70 Oc...