YCCS TEC BACnet MS/TP Networked Multi-Stage Thermostat Controllers

Transcription

1 YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions TEC26034 Applications The TEC26034 Thermostat Controller is a BACnet MasterSlave/TokenPassing (MS/TP) networked device that provides control of multistage heating/ cooling equipment in York Commercial Comfort System (YCCS) applications. The TEC26034 Thermostat Controller features an intuitive User Interface (UI) with backlit display that makes setup quick and easy. The thermostat controller also employs a unique, ProportionalIntegral (PI) timeproportioning algorithm that virtually eliminates temperature offset associated with traditional, differentialbased thermostat controllers. IMPRTAT: The TEC26034 Thermostat Controller is intended to provide an input to equipment under normal operating conditions. Where failure or malfunction of the thermostat controller could lead to personal injury or property damage to the controlled equipment or other property, additional precautions must be designed into the control system. Incorporate and maintain other devices, such as supervisory or alarm systems or safety or limit controls, intended to warn of or protect against failure or malfunction of the thermostat controller. orth American Emissions Compliance United States This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when this equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. peration of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his/her own expense. Canada This Class (A) digital apparatus meets all the requirements of the Canadian InterferenceCausing Equipment Regulations. Cet appareil numérique de la Classe (A) respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada. Mounting Location Considerations Locate the TEC26034 Thermostat Controller: on a partitioning wall, approximately 5 ft (1.5 m) above the floor in a location of average temperature away from direct sunlight, radiant heat, outside walls, outside doors, air discharge grills, or stairwells, and from behind doors away from steam or water pipes, warm air stacks, unconditioned areas (not heated or cooled), or sources of electrical interference ote: Allow for vertical air circulation to the TEC26034 Thermostat Controller. Installation To install the thermostat controller: 1. Use a Phillipshead screwdriver to remove the security screw if it is installed on the bottom of the thermostat controller cover. ote: ormally, the security screw is packaged separately in a plastic bag with the thermostat controller. Skip this step if the screw is not installed on the bottom of the cover. 2. Pull the bottom edge of the thermostat controller cover and open the thermostat controller as illustrated in Figure 1. YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions 1

2 ote: For surfacemount applications, use durable mounting hardware such as Molly bolt anchors that cannot be easily pulled out of the mounting surface. 7. Secure the base to the wall surface using two mounting screws as illustrated in Figure 3. ote: Be careful not to overtighten the mounting screws. FIG:cvr_rmvl Figure 1: Removing the Thermostat Controller Cover 3. Carefully pull the locking tabs on the right side of the thermostat controller mounting base and unlock the Printed Circuit Board (PCB). pen the PCB to the left as illustrated in Figure 2. FIG:mntng_bs Figure 3: Securing the Thermostat Controller Mounting Base to the Wall PCB Locking Tabs FIG:prntd_crct_brd 8. Swing the PCB back to the right and carefully snap it into the locking tabs on the thermostat controller mounting base. 9. Remove the screw terminal blocks that are attached to a disposable adhesive. Figure 4 illustrates the locations of the screw terminal blocks on the thermostat controller. Figure 2: pening the Thermostat Controller PCB 4. Pull approximately 6 in. (152 mm) of wire from the wall and insert the wire through the hole in the thermostat controller mounting base. 5. Align the thermostat controller mounting base on the wall and use the base as a template to mark the two mounting hole locations. 6. Position the thermostat controller mounting base so that the arrow on the base points upward to indicate the top of the thermostat controller. ote: If you need to install the thermostat on an electrical junction box, use 21/2 x 4 in. (63 x 101 mm) square boxes with mud ring covers, and avoid smaller 11/2 x 4 in. (38 x 101 mm) square or 3 x 2 in. (76 x 51 mm) boxes. This procedure ensures you have enough space for cabling and endofline devices, if needed. Figure 4: Removing the Screw Terminal Blocks FIG:trmnl_blcks 2 YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions

3 Wiring When an existing thermostat controller is replaced, remove and label the wires to identify the terminal functions. When a TEC26034 Thermostat Controller is replaced, simply remove the old screw terminal blocks and reinsert them onto the PCB of the replacement thermostat controller.!! CAUTI: Risk of Electric Shock. Disconnect the power supply before making electrical connections to avoid electric shock. CAUTI: Risk of Property Damage. Do not apply power to the system before checking all wiring connections. Short circuited or improperly connected wires may result in permanent damage to the equipment. IMPRTAT: Make all wiring connections in accordance with local, national, and regional regulations. Do not exceed the electrical ratings of the TEC26034 Thermostat Controller. To wire the thermostat controller: 1. Strip the ends of each wire 1/4 in. (6 mm) and connect them to the appropriate screw terminals as indicated in Figure 5. ote: If multiple wires are inserted into the terminals, be sure to properly twist the wires together prior to inserting them into the terminal connectors. 2. Carefully push any excess wire back into the wall. ote: Seal the hole in the wall with fireproof material to prevent drafts from affecting the ambient temperature readings. 3. Reinsert the screw terminal blocks onto the PCB. 4. Reattach the thermostat controller cover to the mounting base (top side first). 5. Use a Phillipshead screwdriver to reinstall the security screw on the bottom of the thermostat controller cover YIMA0111 Connecting the YCCS System To connect the YCCS System : 1. Set the YCCS System address of the thermostat controller per the engineering drawings and test for bus voltage and polarity prior to wiring the YCCS System. Use the Com addr parameter to set the system bus address for the thermostat controller. 2. bserve the polarity when connecting the bus wires to the thermostat controller. 3. After the bus wires are connected to the first thermostat controller, continue in a daisychained fashion to the next YCCS System device. ote: The bus wiring must be twistedpair lines. Do not run the bus wiring in the same conduit as line voltage wiring (30 VAC or above) or other wiring that switches power to highly inductive loads (such as contactors, coils, motors, or generators). System Communication RS485 serial protocol segments requires proper EndofLine (EL) termination to reduce interference from signal bounce back on the segment. The system requires at least one termination at either end of the segment. The System Manager ships with the EL switch in the factory default, (up) position. Ensure that this device is EL on one end of the System segment. See the EndofLine (EL) Terminations section for more information. The thermostat controller has automatic baud rate detection. Do not exceed the maximum number of devices allowed on a YCCS System bus (38 devices total, including up to 24 TEC Series thermostat controllers). Be sure that the wiring terminations are set correctly and that all communication wiring is daisychained with no taps. See the Troubleshooting section for information on correcting physical bus problems. Figure 5 shows TEC26034 Thermostat Controller wiring; see Figure 6 for a YCCS communication riser. YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions 3

4 Terminal Function Y1 Y2 G RC C RH W1 W2 Aux DI1 DI2 RS Scom S MS,, REF Energizes on a Call for FirstStage Cooling Energizes on a Call for SecondStage Cooling Energizes Fan in Accordance with the Selected Fan Mode 24 VAC from Equipment Transformer 24 VAC (Common) from Equipment Transformer 24 VAC for Heating Stages Energizes on a Call for FirstStage Heating Energizes on a Call for SecondStage Heating Auxiliary utput Digital Input 1 (Filter nly) Digital Input 2 (Disabled) Remote Room Sensor Sensor Common Auxiliary/utdoor Air Sensor Remote Monitoring Supply Temperature Sensor CCS System REF FivePole Left Top Connector Y2 Y1 G RC C SevenPole Bottom Connector Aux DI1 DI2 RS Scom ThreePole Right Top Connector RH W1 W2 S MS Aux Contact (High Side Common) Lighting n/ff Actuation Exhaust Fan Y2 Y1 G RC C RH W1 W2 Aux DI1 DI2 RS Scom S MS REF Cool 2 Cool 1 Fan Heat 1 Heat 2 Aux Supervisory Controller 24 VAC Thermostat Power If using the same power source for the thermostat and heating loads, install a jumper across RC and RH. Remote Room Sensor Auxiliary/ utdoor Air Sensor Remote Monitoring Supply Temperature Sensor FIG:wrng Figure 5: Wiring the TEC26034 Thermostat Controller 4 YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions

5 J J2 J2 J9 J8 J7 J6 J5 AI3 AI4 AI1 AI2 AI3 AI4 AI1 AI2 J J9 J8 J7 J6 J YIMA0111 System Manager Termination Board EL ff S1 System Zone SB SB ZB ZB n J8 J7 J6 ff S2 EL AC System Communication Trunk Tape back Drain Wire ote: Ground the drain wire at the end of the communication trunk. Do not allow the drain wire to contact exposed metal. Zone Coordinator Termination Board EL ff S1 System Zone SB SB ZB ZB n J8 J7 J6 ff S2 EL AC Communication Connector Drain Wire IM Module Address = 4 to 7 Tape back Drain Wire Address Switch AI5 Drain Wire Communication Connector Address Switch AI2 Single Zone Unit AI3 AI4 AI4 AI5 AI3 AI2 AI1 C M Input Terminals Valid Address Range = 1841 TEC26014, TEC26024, TEC26034 Address = 42 to 65 Address = 4 VAV Rooftop Unit AI1 C M Input Terminals Zone Communication Trunk ote: Communication trunk must be 22 AWG (0.65 mm) 3conductor twisted, shielded cable with drain wire. RTU VAV Box Drain Wire Universal RTU Controller LCPEC10010 Address = 18 to 41 Address = 6 C M Drain Wire VAV Valid Address Range = 637 VAV Box Address = 7 C M Drain Wire ote: Ground the drain wire at the end of the communication trunk. Do not allow the drain wire to contact exposed metal. FIG:CCS_sys_rsr Figure 6: System Communication Riser YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions 5

6 676292YIMA0111 EndofLine (EL) Terminations Daisychained RS485 protocol networks require EndofLine (EL) termination to reduce interference. Interference is caused by signal reflection that occurs when data transmissions reach the end of a bus segment and bounce back (Figure 7). The high baud rates on MasterSlave/TokenPassing (MS/TP) bus applications require robust EL termination and strict adherence to the EL termination rules. o EL = o Signal Cushioning (Bounce Back and oise) EL Provides Signal Cushioning (o Bounce Back) o EL n a YCCS System bus or Zone bus, only one EL termination is required due to the fewer number of devices on one bus and the shorter wiring length. Specifically, the System bus must always have a System Manager as the EL device, and the Zone bus must always have a Zone Coordinator as the EL device. Figure 8 shows a YCCS EL wiring example. Figure 7: Interference EL FIG:intrfrnc System Manager must be end of line for system bus System Manager Zone Coordinator must be end of line for zone bus VAV Zone Coordinator To Phone Line To Ethernet Hub Modem LA EL System Zone EL To AC LA EL System Zone SB SB ZB ZB SB SB ZB ZB EL To AC ther System Devices tape off To VAV Zone Devices Zone Sensor CV Unit Controller AI2 AI1 Binary & Mod Simplicity Board LA CBP Zone Coordinator EL System Zone? SB SB ZB ZB EL? To AC ther System Devices To CBP Zone Devices To Temperature, RH%, C2 Sensor, Building Pressure, Light Sensor, Refrigerant Sensor Monitored Contact Monitored Contact AI4 AI3 BI2 BI1 Input utput Module B4 B3 B2 B1 To Scheduled Item 4 To Scheduled Item 3 To Scheduled Item 2 To Scheduled Item 1 To AC Y2 Y1 G RC C RH W1 W2 Aux DI1 DI2 TEC26014 TEC26024 TEC26034 RS Scom S MS _ Ref AT Sensor RAT Sensor SAT Sensor To Zone C2 Sensor To Zone RH% Sensor Zone Sensor AI8 AI7 AI6 AI5 AI4 AI2 AI1 Universal CV Unit Controller BI2 B5 B4 B3 B2 B1 APS W2 W1 Y2 on CCS Y1 HVAC G System R C ther System Devices Figure 8: EndofLine Wiring This end of the Drain Wire connected to cabinet ground FIG:TEC_EL 6 YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions

7 Thermostat Controller Communication Modes After connecting the thermostat controller to the system bus, verify that the device is communicating correctly on the bus segment. A small green light under the thermostat controller cover (on the left edge when facing the thermostat controller) indicates the communications mode when the thermostat controller is operating. The following blink codes may appear: ShortShortLong: Indicates that the baud rate is known and that communication is active. ShortShort: Indicates that the thermostat controller is scanning for the correct baud rate and that there is no communication. ff: Indicates that there is no power to the thermostat controller or that the MS/TP wiring polarity is reversed. Long: Indicates that the MS/TP communication daughter board is the wrong type for the main board. Setup and Adjustments Thermostat Controller User Interface Keys The TEC26034 Thermostat Controller User Interface (UI) consists of five keys on the front cover (Figure 9). The function of each key is as follows: Use the YES key to: confirm menu selections and to advance to the next menu item stop the Status Display Menu from scrolling and to manually scroll to the next parameter on the menu ote: When the thermostat controller is left unattended for 45 seconds, the thermostat controller display resumes scrolling. Use the key to decline a parameter change and to advance to the next menu item. Use the MEU key to: access the Main User Menu or to exit the menu (see the Main User Menu section) access the Installer Configuration Menu or to exit the menu (see the Configuring the TEC26034 Thermostat Controller at the Local Display section. Backlit, plain text Liquid Crystal Display (LCD) is easy to read in any condition. Room Temp 70.0ºF Five keys on the thermostat controller make operation easy and intuitive. Use the UP/DW arrow keys to change the configuration parameters and to activate a setpoint adjustment. Backlit Liquid Crystal Display (LCD) The TEC26034 Thermostat Controller includes a 2line, 8character backlit display. Lowlevel backlighting is present during normal operation, and it brightens when any user interface key is pressed. The backlight returns to low level when the thermostat controller is left unattended for 45 seconds. LightEmitting Diodes (LEDs) Three LEDs are included to indicate the fan status, call for heat, or call for cooling: The fan LED is on when the fan is on. The heat LED is on when heating is on. LightEmitting Diodes (LEDs) indicate system activity. Figure 9: Front Cover of Thermostat Controller The cool LED is on when cooling is on. Programming verview In addition to the YCCS System Manager, the Status Display Menu, the Main User Menu, and the Installer Configuration Menu are used locally to view, program, and configure the thermostat controller. Status Display Menu The Status Display Menu is displayed during normal thermostat controller operation, and continuously scrolls through the following parameters: Room Temperature System Mode FIG:frnt_vw YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions 7

8 Schedule Status (ccupied/unoccupied) utside Temperature An outside air temperature sensor must be installed and connected. Applicable Alarms The backlight lights up as an alarm condition is displayed. ote: Frost and Fan Lock alarms may appear locally at the thermostat controller. Filter alarms appear both at the thermostat controller and at the YCCS System Manager. ote: Press the YES key to temporarily stop this menu from scrolling. Main User Menu Use the Main User Menu to access and change the basic operating parameters of the thermostat controller. Access the menu by pressing the MEU key during normal thermostat controller operation. ote: Select parameters (such as setpoints) are set at the System Manager (Table 1). Any value configured at the thermostat controller is automatically overridden by the value set at the System Manager. The Main User Menu also includes Auto Help. Auto Help appears automatically in the Main User Menu during a pause in programming activity. Installer Configuration Menu Use the Installer Configuration Menu to set up the thermostat controller for applicationspecific operation. To access the menu, press and hold the MEU key for approximately 8 seconds. Configuring the TEC26034 Thermostat Controller at the Local Display The TEC26034 Thermostat Controller ships from the factory with default settings for all configurable parameters. Although all parameters shown in Table 2 appear at the thermostat controller, not all are configurable at the thermostat controller. To reconfigure the parameters set at the thermostat controller, follow the steps in this section. 1. To access the Installer Configuration Menu, press and hold the MEU key for approximately 8 seconds. ote: If the Password parameter is configured, Password 0 appears on the thermostat controller display indicating that the configured password is required to proceed. Use the UP/DW arrow keys to enter the configured password, then press the MEU key to proceed through the Installer Configuration Menu parameters. 2. nce the Installer Configuration Menu begins, release and press the key to scroll through the parameters listed in Table When the desired parameter is displayed, use the YES key to choose the desired selection option. 4. Press the YES key and then the key to continue scrolling through the parameters. When the thermostat controller is in the Installer Configuration Menu and left unattended for approximately 8 seconds, the thermostat controller reverts to the Status Display Menu. Configuring the Thermostat Controller at the System Manager The System Manager overrides select parameters (including setpoints) set at the thermostat controller. These parameters are shown in Table 1. Table 2 shows all parameters which appear at the thermostat controller. To access these parameters: 1. From the System Manager home screen, press the setup icon (shown right). The System Manager Setup screen appears. 2. Press Systems. The Systems screen appears. 3. Select the TEC you want to configure. The TEC Zone screen appears. 4. Press Setup. The TEC Zone Setup screen appears. 5. Select the parameter you want to configure. 6. Select the new value and press K. Complete these steps for all TECs on your System. You can change the name of the thermostat controller and as it appears on your System Manager. Refer to the York Commercial Comfort System (YCCS) System Manager and Zone Coordinator User s Guide (428516) for more information. Setting Heating and Cooling Setpoints All setpoints are set at the YCCS System Manager. Any setpoints created in the TEC26034 UI are overridden by the setpoints created in the System Manager. Setting the Thermostat Controller Password You may configure the thermostat controller password at the thermostat controller; however, this value is automatically overridden by the value entered at the System Manager. By default, the System Manager assigns all TEC260x4 Series Thermostat Controllers on the YCCS System a password of YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions

9 Follow these steps to change the password: 1. From the System Manager home screen, press the Setup icon. The Setup screen appears. 2. Press System Manager. The System Manager Setup screen appears. 3. Press Security (password). The Security (Passwords Required) screen appears YIMA Press Change TEC Configuration Password. If you are not logged on as the Administrator, you are prompted for the Administrator password. After you have entered this password, the Change TEC Configuration Password appears. 5. Enter a new value between 1 and 1,000. You do not need to enter 0s preceding any number less than four digits. 6. Press K. The new password is automatically assigned to every TEC on the System bus. Table 1: Parameters Set at System Manager 1, 2 Parameter Description and Default Selection ptions System Mode Selects the operating status of the Rooftop Unit (RTU). Default: Auto Cooling: RTU provides cooling. Heating: RTU provides heating. ff: o heating or cooling is provided. Auto: RTU operates according to the userset schedule Setpoint Deadband Cooling Unocc Setpoint Cooling cc Setpoint Heating cc Setpoint Heating Unocc Setpoint TEC Configuration Password Temporary ccupancy Time Display Units Sets the minimum deadband between the heating and cooling setpoints. Default: 2.0 Deg F (1.0 Deg C) Sets the unoccupied cooling setpoints. Default: 78.0 Deg F (25.6 Deg C) Sets the occupied cooling setpoints. Default: 72.0 Deg F (22.2 Deg C) Sets the occupied heating setpoints. Default: 68.0 Deg F (20.0 Deg C) Sets the unoccupied heating setpoints. Default: 62.0 Deg F (16.7 Deg C) Sets the protective access password to prevent unauthorized access to the Installer Configuration Menu. Default: 227 Sets the duration of temporary occupancy time. Default: 120 min Sets the display units of measurement. Default: Deg F ptions: 2.0 Deg F, 3.0 Deg F, 4.0 Deg F (1.0 Deg C, 1.5 Deg C, 2.0 Deg C) Range: 72.0 to 86.0 Deg F (22.2 to 30.0 Deg C) Range: 70.0 to 78.0 Deg F (21.1 to 25.6 Deg C) Range: 62.0 to 70.0 Deg F (16.7 to 21.1 Deg C) Range: 55.0 to 68.0 Deg F (12.8 to 20.0 Deg C) Range: 1 to 1,000 See the Setting the Thermostat Controller Password section for setup information. Range: 15 to 240 min ptions: Deg C or Deg F 1. Default values and selection options are shown as they appear on screen. For example, F at the System Manager appears as Deg F. 2. The System Manager automatically overrides any values set locally at the thermostat controller every 15 minutes. YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions 9

10 Table 2: Installer Configuration Menu (Part 1 of 3) Parameter Description and Default Selection ptions Appearing on Display 1 Com addr YCCS System address of the controller. Default: 254 Range: 42 to 65 Pswrd DI1 DI2 MenuScro Lockout Pwr del 2 Frost pr Heat max Cool min Pband Set at System Manager. Set to Filter by System Manager. (Value cannot be changed) Disabled by System Manager. Gives the option of having the display continuously scroll the parameters. Default: on (Filter): A Filter alarm is displayed. This alarm can be connected to a differential pressure switch that monitors a filter. (off): The scroll is inactive. (on): The scroll is active. Disables access at TEC to scheduling, setpoints, and mode settings. Set by System Manager to o Access (2). Value cannot be changed. Sets the delay time period at Range: 10.0 to sec thermostat controller powerup, or each time power is removed and reapplied, before any operation (fan, heating, or cooling) is authorized. Also can be used to sequence the startup of multiple units in one location. Default: 10.0 sec Provides a minimum heating setpoint of 42.0 F/5.5 C to prevent freezing in the zone controlled by the thermostat controller. Default: off (on): Enabled (off): Disabled Set at System Manager (Heating cc Setpoint, Heating Unocc Setpoint). Set at System Manager (Cooling cc Setpoint, Cooling Unocc Setpoint). Proportional Band used by the PI temperature control loop of the thermostat controller. Pband is not converted with C or F scale and is always shown with a range of 2 to 8. Default: 2 (2.0F /1.1C ) Value F Scale Pband/C Scale Pband 2 2.0F /1.1C 3 3.0F /1.7C 4 4.0F /2.2C 5 5.0F /2.8C 6 6.0F /3.3C 7 7.0F /3.9C 8 8.0F /4.4C ote: The use of a larger proportional band is not to use the thermostat controller as a discharge air controller device. The use of a larger proportional band can be used to solve issues for flawed HVAC design with basic sizing and thermostat controller location errors that cannot be worked around. 10 YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions

11 Table 2: Installer Configuration Menu (Part 2 of 3) Parameter Appearing on Display 1 Description and Default Selection ptions Anticycl Heat cph Cool cph Deadband Fan cont Fan del TccTime Cal RS Cal S H stage AntiShort Cycle timer sets the minimum on/off times for heating and cooling. Default: 2.0 min ote: Set the antishort cycle timer to 0.0 min for equipment that already has its own antishort cycle timer. Sets the maximum number of Heating cycles per hour. Default: 4.0 Sets the maximum number of Cooling cycles per hour. Default: 4.0 Set at System Manager. Determines how the fan is activated in response to a call for heating. Default: on ote: The Fan cont parameter applies to W1 when the fan is in the Auto mode only. The Fan cont parameter does not affect fan operation on a call for cooling (Y1). Fan delay extends fan operation after a heating or cooling cycle has ended. Default: off ote: The fan delay is only active when the fan is in the Auto mode. Set at System Manager. Sets the desired room air temperature sensor calibration (offset). The offset can be added to or subtracted from the actual displayed room temperature. Default: 0.0F /0.0C Sets the desired outside air temperature sensor calibration (offset). The offset can be added to or subtracted from the actual displayed room temperature. Default: 0.0F /0.0C Reverts the operation of a twostage thermostat controller to a singlestage thermostat controller when the second heating stage is not needed. Default: 2.0 Range: 0.0 to 5.0 min adjustable in 1minute increments Range: 3.0 to 8.0 cycles per hour Range: 3.0 or 4.0 cycles per hour YIMA0111 (off): The thermostat controller does not activate the fan in response to a call for heating. The fan is activated by the equipment fan and limit control. (on): Enables the thermostat controller to activate the fan in response to a call for heating. (on): Extends fan operation by 60 seconds after a heating or cooling cycle has ended. (off): o extension of fan operation after a heating or cooling cycle has ended. Range: 5.0F /2.5C to 5.0F /2.5C adjustable in 1.0F /0.5C increments Range: 5.0F /2.5C to 5.0F 2.5C adjustable in 1.0F /0.5C increments (1.0): ne Stage (2.0): Two Stages YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions 11

12 Table 2: Installer Configuration Menu (Part 3 of 3) Parameter Description and Default Selection ptions Appearing on Display 1 C stage Reverts the operation of a twostage thermostat controller to a singlestage thermostat controller when the second cooling stage is not needed. Default: 2.0 (1.0): ne Stage (2.0): Two Stages H lock C lock Unocc TM Aux cont Disables heating stage(s) operation when the outside air temperature is greater than the configured value. If the fan mode is set to Auto or Smart, the fan output is also disabled. Requires that an outside air temperature sensor be installed and connected. Default: 120 F/49 C Disables cooling stage(s) operation when the outside air temperature is less than the configured value. If the fan mode is set to Auto or Smart, the fan output is also disabled. Requires that an outside air temperature sensor be installed and connected. Default: 40 F/40 C ot Used. Energizes peripheral devices (lighting equipment, exhaust fans, and economizers). Default: n.o. ote: The contact toggles with the internal ccupied/unoccupied schedule (or the ight Setback [SB] contact on one of the digital inputs, if used). Range: 15 F/26 C to 120 F/49 C adjustable in 5F /5C increments Range: 40 F/40 C to 95 F/35 C adjustable in 5F /5C increments (n.c.): Contact open = ccupied; contact closed = Unoccupied (n.o.): Contact closed = ccupied; contact open = Unoccupied 1. Factoryset parameters appear on the display but cannot be edited by the user at the thermostat controller or System Manager. 2. When adjusting the numeric value, press the UP/DW arrow key to change the value by single increments; press and hold the UP/DW arrow key to change the numeric value in increments of ten. peration Programming/perating the TEC26034 Thermostat Controller nce the thermostat controller is configured and communicating to the System Manager, the System Manager overrides select parameters set at the thermostat controller. To ensure consistency across the YCCS, the System Manager sends a message to the thermostat controller with updated values every 15 minutes. Troubleshooting The following information provides information relative to the TEC26034 Thermostat Controller and YCCS System Communications. Status LEDs The System Manager includes LEDs that indicate communication and alarm status for the controller. Table 3 lists LED descriptions. 12 YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions

13 Table 3: Status LEDs LED Description Green The controller is receiving power from the 24 VAC power supply; alarms are not present. Red The controller is receiving power from the 24 VAC power supply; alarms are present. ff Controller is not receiving 24 VAC power or the controller is in startup mode. YCCS System Communication Problems Several factors may influence the behavior of the System Communication. In addition, certain problems can affect the in multiple ways and have multiple symptoms, which makes the exact diagnosis difficult. For example, duplicate addresses on the can degrade performance, make the device go offline, or stop communication completely. Incomplete Address The TEC26034 Thermostat Controller must have the address set between on the System Communication ; other settings prevent the thermostat controller from communicating on the System Communication. Duplicate Addresses Two or more devices on a communication cannot have the same address. For example, two thermostat controllers cannot both have an address of 42. If two devices on the same have the same address, performance can degrade or serious communication problems may occur. These problems include the devices not coming online and all communication stopping completely. Take care when adding or changing devices that addresses are not duplicated. Check for duplicate addresses, in the following ways, depending on the severity of the situation: If the performance is degraded, check the address settings at the devices with unreliable communications. If a specific device is not communicating, remove the device with communication problems and check if the device address remains online at the System Manager. If the communication problems are severe, and no communication is present, or you cannot determine where communication is unreliable, partition (disconnect and isolate a portion of the system for testing purposes) and test the portion connected to the System Manager. Correcting Physical Communication Problems The communication bus is subject to a number of physical factors that can affect performance. Consider the following list of common physical problems that affect the communications bus: Check status LED to verify power at the controller Check wires Verify wire is 22 AWG (0.6 mm) 3conductor, twisted, shielded cable. Verify shield is continuous and hardgrounded at one end. Check wiring Check for and eliminate TTaps (wire configurations that create a T shape) and star configurations. Ensure bus is wired in daisychain fashion. Verify that appropriate devices have three wires entering and exiting each terminal (devices at the ends of the trunk do not have this wiring). Check EL switch settings Verify the System EL switch on the System Manager is set to and the System Manager is located at the end of the zone bus trunk. Verify that only the EL switch at the end of the system bus is set to and all other system bus EL switches are set to FF. Check connections, polarity, and lengths Verify communications loops are less than approximately 304 m (1,000 ft) total in length. If you are using one transformer to power multiple devices, verify the device 24 VAC power connection follows the polarity of the common and 24 V terminations. Check for opens and shorts Check terminations Check for sources of interference YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions 13

14 Check bus voltages: Check addresses: () to must be within 2.0 to 3.0 VDC Check for duplicate addresses. () to must be within 1.5 to 2.54 VDC Verify the address range is sequential. () to () must be within 0.3 to 1.0 VDC Correcting Thermostat Controller Problems ote: Values may fluctuate due to ongoing communications. This operation is normal provided the voltage is within the defined range. The TEC26034 Thermostat Controller may also have problems specific to the device. Use Table 4 and Table 5 as additional troubleshooting resources. Table 4: Alarm Messages Display Function Frost Indicates that the heating is energized by the low limit frost protection room temperature setpoint 5.6 C (42 F). Fan Lock Indicates that the heating and cooling action are locked out due to a defective fan operation. Filter 1 Indicates that the filter(s) is dirty in accordance with the Digital Input. 1. This alarm also appears at the System Manager. Table 5: Additional Thermostat Controller Troubleshooting Details 1 Symptom Probable Causes Multiple The baud rate may have been changed on some devices on the network but not all devices. Symptoms A download may be in progress. There may be a fault at a device. A repeater may be needed or may be configured incorrectly. There may be a duplicate device object name or instance. Poor Performance Excessive bus traffic may exist (bus overload). The baud rate may be set too low. There may be too many devices on the network. There may be unaccounted devices on the network. There may be unusually slow devices on the network or devices that are slow to respond. Thermostat A power failure or other failure may have occurred at the thermostat. Controller Goes Communication may have been disabled at the thermostat controller. ffline Thermostat Controller Does ot Come nline A thermostat controller may be connected to the wrong bus. A baud rate may be specified in the new thermostat controller that is incompatible with the running network. o device on the network is configured to use a specific baud rate, but all devices are set to use auto baud. At least one device must have an assigned baud rate. Set the baud rate in the bus supervisor and set all other devices to auto baud. 1. For common MS/TP troubleshooting information, refer to the MS/TP Communications Technical Bulletin (LIT ). 14 YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions

15 Accessories All the accessories in Table 6 include mounting hardware; contact the nearest Johnson Controls representative to order any of these parts. ote: Review the technical specifications of the optional accessories prior to their use in an application. Table 6: Accessories (rder Separately) Code Description umber SE6001 TE6361M1 1 TE6363P YIMA0111 Remote Indoor Air Temperature Sensor Duct Mount Air Temperature Sensor utside Air Temperature Sensor 1. Refer to the TE6300 Series Temperature Sensors Product Bulletin (LIT216320) for additional TE636xxx Series 10k ohm Johnson Controls Type II Thermistor Sensors. Repair Information If the TEC26034 Thermostat Controller fails to operate within its specifications, replace the unit. For a replacement thermostat controller, contact the nearest Johnson Controls representative. YCCS TEC26034 BACnet MS/TP etworked MultiStage Thermostat Controllers Installation Instructions 15

16 Technical Specifications TEC26034 Thermostat Controllers Power Requirements Relay Contact Rating (Y1, Y2, G, W1, W2, and AUX) Digital Inputs Analog Inputs Wire Size Temperature Sensor Type 19 to 30 VAC, 50/60 Hz, 2 VA (Terminals RC and C) at 24 VAC ominal, Class 2 or Safety ExtraLow Voltage (SELV) 19 to 30 VAC, 1.0 A Maximum, 15 ma Minimum, 3.0 A Inrush, Class 2 or SELV VoltageFree Contacts across Terminal C to Terminals DI1 and DI2 Resistive Inputs (RS and UI3) for 10k ohm Johnson Controls Type II egative Temperature Coefficient (TC) Thermistor Sensors 18 AWG (1.0 mm Diameter) Maximum, 22 AWG (0.6 mm Diameter) Recommended Local 10k ohm Johnson Controls Type II egative Temperature Coefficient (TC) Thermistor Sensor Temperature Range Backlit 40.0 F/40.0 C to F/ 50.0 C in 0.5 Increments Display Heating 40.0 F/4.5 C to 90.0 F/32.0 C Control Cooling 54.0 F/12.0 C to F/38.0 C Control Accuracy Temperature ±0.9F /±0.5C at 70.0 F/21.0 C Typical Calibrated Minimum Deadband 2F /1C between Heating and Cooling Ambient Conditions perating 32 to 122 F (0 to 50 C); 95% RH Maximum, oncondensing Storage 22 to 122 F (30 to 50 C); 95% RH Maximum, oncondensing Compliance United States UL Listed, File E27734, CC XAPX, Under UL 873, Temperature Indicating and Regulating Equipment FCC Compliant to CFR 47, Part 15, Subpart B, Class A Shipping Weight Canada Europe Australia and ew Zealand BACnet International UL Listed, File E27734, CC XAPX7, Under CA/CSA C22.2 o. 24, Temperature Indicating and Regulating Equipment Industry Canada, ICES003 CE Mark Johnson Controls, Inc., declares that the BACnet Thermostats are in compliance with the essential requirements and other relevant provisions of the EMC Directive 2004/108/EC. CTick Mark, Australia/Z Emissions Compliant BACnet Testing Laboratories (BTL) Listed BACnet Application Specific Controller (BASC) 0.75 lb (0.34 kg) The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products YIMA0111 Subject to change without notice. Printed in U.S.A. Ref: Copyright April 28, 2011 by Johnson Controls, Inc. All rights reserved. Supersedes: othing Johnson Controls Unitary Products 5005 York Drive orman, K 73069