COPELAND 026-1739 Programmable Touchscreen Thermostat User Manual

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USER MANUAL  

Programmable  

Touchscreen Thermostat  

Installation and Operation User Manual  

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General	Details
Name	COPELAND 026-1739 Programmable Touchscreen Thermostat User Manual
Make	Copeland
Language	English
Filetype	PDF (Download)
File size	0.72 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• Copeland

COPELAND 026-1739 Programmable Touchscreen Thermostat User Manual Overview

Summary of Contents

• Page 1: User manual for the programmable touchscreen thermostat. Installation and operation instructions provided.
• Page 2: Page 2
• Page 3: Temperature filter time (sampling rate) Temperature hysteresis Minimum temperature deadband (read-only) Minimum setpoint Maximum setpoint Stage difference Compressor minimum ON time Compressor minimum OFF time Programmable touchscreen thermostat setup for E2 and site supervisor Troubleshooting
• Page 4: Overview The programmable touchscreen thermostat is a configurable device intended for light commercial applications. The thermostat is a communicating, intelligent sensor and controller combination with built-in temperature and humidity sensors. It is used to control systems such as conventional rooftop units and heat pumps. The thermostat communicates over a Modbus RTU network that easily integrates with a building management system. Specifications Power requirements include 18VAC to 30VAC, 50-60Hz, with less than 3.6 VA at 24VAC nominal. The maximum wire size is 18AWG, with 22AWG recommended. The temperature setting range is from 32°F to 122°F (0°C to 50°C). Temperature accuracy is +/- 0.6°C, +/- 1.1°F, within the operating temperature range. The operating temperature range is from 32°F to 122°F (0°C to 50°C). The thermostat is designed to comply with UL60730 and FCC regulations. Dimensions are H 4.72” x W 5.47” x T 1.32”.
• Page 5: Terminal identification and electrical ratings are provided in the document. The table includes maximum current ratings for various signal names. The signals include power supply common, heat stages, dehumidification, reversing valve, and cooling stages. Voltage specifications range from 18-30VAC at 50/60Hz. Relay outputs are designated for different stages of heating and cooling. There are references for DC signals and remote thermistor inputs. The document also mentions a remote humidity sensor. Fan control and fan proof input are included in the terminal identification. The document references a specific programmable touchscreen thermostat model. The content is ©2024 Copeland LP.
• Page 6: Installation Enclosure Thermostat location The thermostat should be mounted about 5 ft (1.5 m) from the floor. It should be placed on a part of the wall without hidden pipes or ductwork. The thermostat should be in a room with operating limits of 32°F to 122°F (0°C to 50°C). Humidity operating range should be within 0% to 95% relative humidity, non-condensing. To open the thermostat enclosure, grip the top and bottom edge and pull straight. To close the thermostat enclosure, align the top and bottom tabs and push firmly toward the wall. The thermostat should not be mounted nearby a window, on an outside wall, or next to a door leading outside. It should not be exposed to direct light and heat from any heat source.
• Page 7: Mounting the baseplate on the wall involves passing wires through the opening and using screws to attach it to a standard electrical junction box. Turn off power to the HVAC system at the main power panel to avoid electrical shock or damage. Do not over-tighten the screws when attaching the baseplate to prevent physical damage. Keep the thermostat housing and vents clean to avoid malfunction. Once the baseplate is affixed, proceed with wiring connections to the terminal block. Refer to the wiring guide for conventional systems (24V AC) for configuration and signals definition. For systems with only one stage, second stage terminals can be left floating. The document includes tables for single and dual transformer systems. Figures illustrate the baseplate and terminal block labels. Warnings and cautions are provided to ensure safe installation and operation.
• Page 8: Thermostat communication and wiring guide for heat pump systems are outlined. Modbus connections and terminal specifications are provided. Input terminals for the thermostat include various remote sensors and fan control inputs. Stage 1 and Stage 2 for heat pumps refer to compressor stages, not just cooling stages. For systems with a single stage, the second stage terminal can be left open. Output terminals for the thermostat include multiple relay outputs for cooling, heating, and fan control. Power terminals for the thermostat are specified, including 24VAC power supply connections. The document includes tables for communication connections, input terminals, power terminals, and output terminals. Reference for DC signals is mentioned in relation to the thermostat's operation. The document is part of the user manual for the programmable touchscreen thermostat.
• Page 9: Configuration menu allows users to change the Modbus device address. Ad is shown on the display to indicate which parameter is being changed. To change the value, press either the up or down arrow, and then press the check icon. Press CA to cancel and exit the configuration menu without saving changes. The display is used as the Graphical User Interface to show status, setpoints, and actual measurements. On the first start-up of the thermostat, the default system configuration is idle. The second configuration menu allows users to change the Modbus device baud rate. br is shown on the display to indicate which parameter is being changed. To access the configuration menu, press the technician icon for 10 seconds. If previously configured, a technician icon should be displayed on the main screen.
• Page 10: Configuration menu allows users to set the thermostat system configuration. SC indicates which parameter is being changed. The current revision supports Conventional HVAC Systems such as RTU and Heat-pump Systems. There are four possible configurations: IDLE, RTU, HP_O, and HP_B. In IDLE configuration, all outputs are open and controls are inactive to prevent issues. To change the value, press the up or down arrow, then the check icon to proceed. Only IDLE and the current configuration are accessible when already configured in RTU, HP_O, or HP_B. To change from a functional configuration to another, set the thermostat to IDLE first. By default, the thermostat is configured as 2 heat-stages and 2 cool-stages. A factory reset occurs when set to IDLE, except for the current date and time.
• Page 11: Configuration menu allows modification of heating stages. The letters HS indicate heating stages, with possible values of 1 or 2 stages. Press the Done icon to proceed to the next menu; values are not saved until the last configuration menu. System configuration must be set to IDLE before final configuration to prevent undesired operations. Ensure correct system configuration is selected before commissioning the device on E2 or Site Supervisor/E3. Changing system configuration after commissioning may prevent proper reading or writing of parameters. The configuration menu also allows modification of cooling stages. The letters CS indicate cooling stages, with possible values of 1 or 2 stages. Press the Done icon to move to the next menu; values will not be saved until the last configuration menu is reached. Refer to figures for visual representation of heating and cooling stages settings.
• Page 12: Configuration menu allows users to test the full display segments. If parameters are changed, the thermostat will reboot. The display will show “--” before the device restarts. The display turns off for a few seconds during reboot. The configuration menu provides the current system revision number. The revision number is shown with three digits and contains a decimal. Touch CA to cancel previous changes and return to normal display. The temperature unit can be changed to either °F or °C. Press the unit indicator to toggle between °F and °C. The software revision will be updated for the latest official release.
• Page 13: The last step is the day of the week that will be flashing at the top of the screen. To change the day of the week, press either the up or down arrow to the desired value, and then press the check icon to save the changes. On the main display, the clock at top right shows the actual time. To change or update the time, press the clock on the display. If time is set through the Modbus network, the format to use for the time parameter should be 24-hours. The first step in time settings is to set the time format between 12 hours AM/PM or 24 hours. To access or wake-up the display, press anywhere on the screen. Control icons will appear on both right and left side of the display. The second step is the hour field that will be flashing on the top right of the screen. The third step is the minutes field that will be flashing on the top right of the screen. The display will return to backlight off after about 30 seconds of inactivity on the touch display. This backlight off state is essential to avoid important temperature measurement shifts due to thermostat self-heating. The actual time display on the thermostat will be according to the selected time setting (12H or 24H).
• Page 14: Temperature setpoints can be changed by pressing the desired setpoint on the display. The corresponding setpoint configuration menu will appear with arrows. To change the thermostat mode, press the icon displayed on the screen. The active mode will be shown as COOL or HEAT, along with the number of stages activated. Thermostat modes include OFF, COOL, HEAT, and AUTO. In OFF mode, the thermostat is inactive. In COOL mode, the thermostat operates only for cooling. In HEAT mode, the thermostat operates only for heating. AUTO mode allows automatic switching between cooling and heating.
• Page 15: Fan mode can be either AUTO or ON. In AUTO mode, the fan is active only during heating or cooling calls. In ON mode, the fan remains active regardless of thermostat mode or heating and cooling conditions. When FAN_MODE is AUTO, the fan icon and the text AUTO are displayed. The fan indicator shows the status according to heating or cooling. In AUTO mode, the fan activates only when there is a heating or cooling call. When FAN_MODE is ON, the fan icon is displayed with no text. The fan stays active as long as FAN_MODE is ON. The fan indicator shows four dashes over the fan when it is ON. The fan operates independently of thermostat mode in ON mode.
• Page 16: Active stage indicator shows the mode is active with the number of activated output stages and the target temperature setpoint. The display indicates output activation status based on the number of output stages configured (1 to 2 stages for cooling and heating). In a 2-stage configuration, the output activation can be 0% OFF or 100% (2-stages ON). In a 1-stage configuration, the output activation can also be 0% OFF or 100% (1-stage ON). If Modbus communication occurs, the Building Management System (BMS) controls the thermostat with its own schedule. The thermostat can operate on either a schedule or unscheduled operation. Schedule mode inactive is the basic mode where temperature setpoints can be changed on the display. If Modbus communication is lost for 10 minutes or more, the internal schedule takes over to control the thermostat. Schedule mode active describes the thermostat behavior against a programmed schedule, which can only be activated by the Modbus network. Scheduled operation can be done via the BMS schedule or the back-up schedule.
• Page 17: The internal schedule is based on four events/periods for each day, which can be programmed on a 5 & 2 day schedule. For each period, the Start Time, the Thermostat Mode and the Occupancy Mode are set. The Thermostat Mode can be set to either OFF, COOL, HEAT or AUTO. The Occupancy Mode can be set to either Occupied or Unoccupied through the scheduler parameters. The Backup schedule is programmed with default values for weekdays and weekends. When the Schedule Mode is set to Follow, there are two groups of temperature setpoints related to the occupancy status of the room. The Occupied Mode has setpoints that are more comfortable for the occupants, while the Unoccupied Mode brings energy savings with more conservative setpoints. When the thermostat is under scheduled operation, the user can make a manual override by modifying certain parameters. The word “override” appears on the left-lower corner of the screen when activated.
• Page 18: Screen lock options include complete and partial locking of the thermostat touchscreen. When completely locked, users cannot modify any parameters. Partially locked screens allow users to adjust setpoints only. The screen lock function is accessible remotely through the Modbus network interface. Users can reset the override by pressing override on the GUI for both BMS and Backup schedules. A lock icon appears when the screen is completely locked or when an attempt is made to modify locked parameters. If communication with the BMS is lost, the screen auto-unlocks after 10 minutes. Override values are temporary and not stored in memory, while scheduled values are read from memory. The BMS can read the override status to check if an override is active. Overrides remain in effect under specific conditions related to BMS and Backup schedules.
• Page 19: Switch #1 enables a pull-up resistor on the RS-485 network for bias purposes. The thermostat communicates with the BMS via an RS-485 serial data link using the Modbus RTU protocol. Switch #2 allows for the addition of a termination resistor on the RS-485 network. Three DIP switches enable or disable termination and bias resistors for the RS-485 network. Switch #3 enables a pull-down resistor on the RS-485 network for bias purposes. In case of a power outage, the thermostat retains the last settings in volatile memory. The thermostat is equipped with a Real-Time Clock connected to a backup battery. The default control configuration of the thermostat is IDLE to prevent equipment damage. The thermostat can control various HVAC equipment types, including rooftop units and heat-pump systems. The expected lifetime of the backup battery is seven years.
• Page 20: Thermostat behavior is influenced by room temperature, setpoints, and activated stages. The dead band minimum, hysteresis, and stage diff parameters have write access and require careful configuration. The input can accept up to 10V voltage, but IN4 is adapted for a 0-5V sensor. There are five input terminals (IN1 to IN5) that can be configured with mode, state, and offset Modbus parameters. IN1 has a supplementary weight Modbus parameter that affects input value and control temperature registers. Input modes are read-only and configured for specific sensors. IN1 is used for indoor temperature, IN2 for outdoor temperature, IN3 for supply air temperature, IN4 for a remote humidity sensor, and IN5 for a fan proof input. The thermostat updates the input value based on local or remote connections. Input states include options for digital switches and thermistors. Configuration registers impact the overall functionality of the thermostat.
• Page 21: Economizer mode is used to cool the room with fresh outdoor air instead of air cooled by the compressor to save energy. To activate the Economizer mode, certain conditions must be met, including enabling the Economizer and setting the thermostat mode to AUTO or COOL. The outdoor temperature must be below the Economizer changeover setpoint value and the room temperature. The Supply Air temperature must be above the Economizer supply air temperature setpoint value. When activated, the FAN and ECO output relays are energized until the set point cool is reached. The pre-occupancy purge is used when the schedule is active, energizing the FAN and ECO relay outputs before transitioning from unoccupied to occupied. To activate the pre-occupancy purge, the Economizer must be enabled and the scheduler must be enabled. In dehumidification mode, if the current humidity measure is equal to or higher than the dehumidification RH setpoint, the AUX output relay is activated. When dehumidification mode is set to OFF, the AUX output relay is always deactivated. There is no information on the status of the economizer or dehumidification on the display.
• Page 22: Hold mode allows users to prevent changes to specific parameters on the screen or by the BMS. Parameters that can be held include setpoint heat, setpoint cool, thermostat mode, occupancy mode, and fan mode. The HOLD function can only be activated when the schedule is active. When HOLD is active, the BMS cannot disable the schedule or reset the override. The HOLD function can be fixed for 1, 2, 3, or 4 hours. To activate HOLD mode, press the room temperature digits and use the arrows to set the time. The word HOLD will be displayed on the upper-right corner of the screen when activated. To deactivate HOLD mode, set the time of HOLD to zero using the DOWN arrow. The BMS can verify if HOLD mode is active or inactive.
• Page 23: Internal temperature offset measurement is applied. Temperature difference between engagement of stage 1 and stage 2 is for both heating and cooling mode. Time delay before stopping the fan after heating or cooling stages turn off is 60 seconds. Compressor output will be kept activated for a minimum period equivalent to Min ON time parameter. Once deactivated, the compressor output will be kept deactivated for a minimum period equivalent to Min OFF time parameter. Temperature Filter Time is the time constant on the temperature measurement. Temperature hysteresis is the temperature difference between activation and deactivation of an output stage. Minimum temperature deadband prevents simultaneous heat and cool activation. Minimum allowable temperature setpoint for a user is 59°F (15°C). Maximum allowable temperature setpoint for a user is 77°F (25°C).
• Page 24: Programmable touchscreen thermostat setup for E2 and Site Supervisor The touchscreen thermostat requires adding a description file (P/N 527-0729) to E2. Ultrasite32 software must be installed to perform a description file upload. Connect to E2 using UltraSite32. Once completed, disconnect from the E2 and reboot the E2 controller. Do not omit the step of rebooting the controller. Log into the E2 by pressing the appropriate keys. Access general controller info. Move to the C3: Serial tab.
• Page 25: Commissioning the thermostat involves selecting the correct Com Port and Modbus settings. Ensure the system configuration is selected correctly prior to commissioning the device on the E2 or Site Supervisor/E3. Changing the system configuration after commissioning may result in parameters not being properly read or written. The default address for the device is 1. Press the appropriate buttons to enter the Network Summary screen and select the Modbus number. Installation of the thermostat application requires entering the desired number of devices under Quantity. A confirmation window will indicate when the Modbus device address is set. Refer to Section 3.2.1 for instructions on setting the device address on the thermostat. Press buttons to save changes and return to the Home screen after configuration. Ensure to follow the steps carefully to avoid issues with device communication.
• Page 26: Device and COM port setup in Site Supervisor Modbus device setup The polarity of the MODBUS connection between Site Supervisor and Touchscreen Thermostat is reversed. Click Save to save the changes. Site Supervisor COM port setup Click the Settings icon (the gear) and select General. Adding the Touchscreen Thermostat application in Site Supervisor Click the Control Inventory icon (the box). Select the Com Port the device is wired to (Com Port 1 - 4). Set the Modbus connection parameters including baud rate, data size, parity, and stop bits.
• Page 27: Ensure the system configuration is selected correctly prior to commissioning the device. Changing the system configuration after commissioning will result in some parameters not being able to be properly read or written. The E2 or Site Supervisor/E3 application will need to be deleted and then recreated if changes are made post-commissioning. Click the Port ID drop-down list to select Modbus assigned to the Com Port. Click the Address drop-down list to select the Modbus Address (default address is 1). Click the Association drop-down list to select the HVAC Zone to associate with the thermostat. Click Update to save settings. Wait a few seconds and the device should appear Online. Setting up the thermostat update is illustrated in the figures provided. The document pertains to the 026-1739 R4 Programmable Touchscreen Thermostat.
• Page 28: Troubleshooting In the unlikely occurrence of a problem with the thermostat, please try the following suggestions. Most problems can usually be corrected promptly and easily. Make sure the operating conditions are within the specifications (temperature range and humidity range). Open the thermostat enclosure as per Section 2.3, Thermostat Installation and wait 30 seconds prior to closing the enclosure. Check the circuit breaker for 24VAC and reset if necessary. Check the power switch at HVAC system and make sure it is ON. Check that the room temperature is not under 0°C or 32°F. Check that the room temperature is not above 50°C or 122°F. Set Thermostat Mode to HEAT, and make sure the HEAT temperature setpoint is higher than the current room temperature. Set Thermostat Mode to COOL, and make sure the COOL temperature setpoint is lower than the current room temperature. Check that Rc terminal is properly connected to R terminal with shorting jumper wire.
• Page 29: Regulatory Information Non-safety declaration: The thermostat does not exhibit any safety risk to the user if the usage guidelines are followed. Power supply guidelines: The thermostat must be power supplied by an NEC Class II limited power 24VAC transformer. FCC compliant to CFR47, Part 15, Subpart B, Class B. This device complies with Part 15 of the FCC Rules. Operation is subject to two conditions: it may not cause harmful interference and must accept any interference received. Any changes or modifications not approved by Copeland can void the user’s authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class B digital device. This equipment generates, uses, and can radiate radio frequency energy and may cause harmful interference if not installed and used according to the instructions. If this equipment does cause harmful interference to radio or television reception, the user is encouraged to try to correct the interference by various measures. This Class B digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment regulations. California Proposition 65: This product can expose you to chemicals including lead, which are known to cause cancer and birth defects or other reproductive harm.
• Page 30: For more product information, scan the QR Code. Visit our website for the latest technical documentation and updates. The contents of this publication are presented for informational purposes only and are not to be construed as warranties or guarantees. Copeland reserves the right to modify the designs or specifications of such products at any time without notice. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end-user. ©2024 Copeland is a trademark of Copeland LP.