Big blue humidity universal thermostat with humidity/dehumidity control and automatic heat/cool changeover option single stage, multi-stage, heat pump (16 pages)
Overview The Emerson Programmable Touchscreen Thermostat (P/N 810-1600) 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 used to control systems such as conventional Rooftop Units (RTU) and Heat Pumps (HP).
Installation 2.1. Enclosure Figure 2-1 - Emerson Programmable Thermostat Enclosure 2.2. Thermostat Location The thermostat should be mounted: > About 5 ft (1.5 m) from the floor. > On a part of wall without hidden pipes or ductwork. > In a room that operating limits are within 32°F to 122°F (0°C to 50°C).
NOTE: Both top and bottom securing screws are optional and normally not installed on the units. 2.3.2. Mounting the Baseplate on the Wall Figure 2-3 - Baseplate (Back view) 4 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
To fix the baseplate on a wall, pass the wires through the opening of the baseplate, and use either 2x self-taping screws and dry-wall anchors, or regular 6-32 machine screws to attach on a standard single-gang electrical junction box (2” x 4”). CAUTION! Do not over-tighten the screws when attaching the baseplate on a wall as physical damage may occur.
For systems with only one stage, second stage terminal (Y2) can be left floating (open). NOTE: Stage 1 and Stage 2 for Heat Pumps are Compressor Stages (Heat/Cool) and not only Cool Stages. 8 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
Operation 3.1. Graphical User Interface (GUI) The display of the device is used as the Graphical User Interface to show some of the status, setpoints and actual measurements such as room temperature and relative humidity. The display is a resistive touch-type that allows users to navigate and to change values that are shown on the display (see Figure 3-1).
Press CA to cancel and exit the configuration menu without saving any changes. Figure 3-3 - Modbus Address Configuration Menu Address Number Modbus Device Address 1 to 247 Range from 1 to 247 Table 3-1 - Modbus Device Address Range 10 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
SC is shown on the right side of the display to indicate which parameter is being changed (SC stands for System Configuration). The current revision of the Emerson Programmable Touchscreen Thermostat supports Conventional HVAC Systems such as RTU and Heat-pump Systems using a ...
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Table 3-4 - Thermostat System Configuration IMPORTANT! Prior to any change of system configuration, the unit must be set to IDLE configuration first, and then to the final desired configuration. 12 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
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IMPORTANT! A factory reset of all parameters will occur when the system is in IDLE configuration, except the current date and time that are kept with the use of a Real-Time Clock (RTC). This factory reset will be triggered on the first start of the device, and when newly configured from RTU, HP_O or HP_B to IDLE configuration.
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IDLE prior to the final configuration each time. This mechanism is to prevent any undesired operation on such an important setting. 14 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
The fourth configuration menu (see Figure 3-9) allows users to test the full segments display. This allows a complete review of the display segments and to inform the user of all possible segments in the current Emerson Programmable Touchscreen Thermostat revision. Press the check icon to go to the next parameter.
Select between H12 for 12-hours AM/PM and H24 for 24-hours format, and then press the check icon to go to the next parameter (see Figure 3-13). Press CA to cancel and return to the normal display without saving any changes. 16 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
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IMPORTANT! If time is set through Modbus network, the format to use for the time parameter should be 24-hours (0-23). The actual time display on the thermostat will be according to the selected time setting (12H or 24H). Figure 3-13 - Time Format Setting •...
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. Figure 3-16 - Wake-up Display 18 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
3.5.1. Temperature Setpoints • To change either the heating or cooling setpoint, press the desired setpoint on the right side of the display (either COOL or HEAT, see Figure 3-17) and the corresponding setpoint configuration menu will appear with arrows (see Figure 3-18). Figure 3-17 - Temperature Setpoint Access Figure 3-18 - Temperature Setpoint Menu (either COOL or HEAT) Menus &...
Table 3-5 - Thermostat Mode 3.5.3. Fan Mode To change the Fan mode, press the (see Figure 3-20). Text on the right side of the icon will display COOL, HEAT, and AUTO. 20 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
Figure 3-20 - Fan Mode Selection Fan Mode Description COOL Fan will be activated when thermostat is in active cooling mode only. HEAT Fan will be activated when thermostat is in active heating mode only. AUTO Fan will be activated when thermostat is in either cooling or heating mode. Table 3-6 - Fan Mode 3.5.4.
3.5.6. Schedule Mode The thermostat can operate on either a schedule or unscheduled operation. Schedule Mode Inactive (Unscheduled Operation) The Schedule Mode set to Inactive is the most basic mode of the thermostat. The user can change the temperature setpoints on the display, see Section 3.1., Graphical User Interface (GUI).
Unoccupied Mode brings energy savings with more conservative setpoints. Figure 3-24 - Thermostat Occupancy Mode When the thermostat is in Occupied Mode, a person-shaped icon will appear on the display (see Figure 3-25). 24 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
Figure 3-25 - Occupied Mode Icon on Display 3.5.8. Manual Override When the thermostat is under a scheduled operation, a user can make a manual override, see Section 3.1., Graphical User Interface (GUI). The programmed schedule will resume when the next event/period will occur if the internal schedule is running.
3.6.1. RS-485 Serial Link The thermostat is equipped with a RS-485 serial data link to communicate with the BMS. Communication with the Emerson Programmable Touchscreen Thermostat is performed via the Modbus RTU protocol over the RS-485 link. The Modbus network is used to read the status of the thermostat and/or apply new settings to modify its operation.
3.7. Power Outage In case of a power outage, the last settings of the thermostat are kept in volatile memory and retrieved upon power restore. The only exception not stored in non-volatile memory is the Manual Override Mode (see Section 3.5.8., Manual Override).
Input modes are configured to the following settings and are read only. IN1 = Thermistor (used for the Indoor temperature) IN2 = Thermistor (used for the Outdoor temperature) IN3 = Thermistor (used for the Supply Air temperature) 28 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
IN4 = 0-10V (Used for a Remote Humidity sensor) IN5 = Digital (used for a Fan proof input) Although the input can accept up to 10V voltage, the IN4 has been adapted for a 0-5V sensor. So, = 0%RH and 5V = 100%RH. INPUT INx STATE The input is not used.
Default Value: 60 seconds Temperature Filter Time is the time constant on the temperature measurement. (Time base for the software sampling, with four (4) samples required to get the filtered value). 30 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
3.8.9. Temperature Hysteresis Default Value: 1°C Temperature hysteresis is the temperature difference between activation and deactivation of an output stage (either the cooling or heating) during normal operation. 3.8.10. Minimum Temperature Deadband (Read-Only) Default Value: 2°C Minimum temperature deadband between heat and cool setpoints. This deadband feature prevents the thermostat to send heat and cool activation simultaneously.
Expand UltraSite to view Directory Level and Site Level see Figure 4-1. Right-click Site Level and click Connect. Expand Site Level and locate the E2 Unit where the Touch T-Stat.dsc will be installed. 32 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
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Right-click on the unit and select Upload Description File Figure 4-1 - Upload Description File Click Browse and select the appropriate description (*.dsc) file for Touch T-Stat.dsc from the computer and click Open Figure 4-2 - E2 Description File Upload Click Upload.
4.2.2. E2 COM Port Setup Log into the E2 by pressing Press then to access General controller Info. Press twice to move to C3: Serial tab (Figure 4-4) 34 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
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Figure 4-4 - C3: Serial Tab Press the to select the Com Port that the device is wired to (COM2, COM4 or COM6). Press for LOOK UP and select MODBUS-1, MODBUS-2 or MODBUS-3. Press to set configuration. Set the MODBUS connection as follows: ...
A window with Select Network appears on the screen, select the Modbus number where you configured the device and press . Default for the device is 1. Select the address for the device and press 36 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
A window will appear. Press and a confirmation will show MODBUS Device Address is set. Figure 4-6 - Modbus Device Address is Set NOTE: Refer to Section 3.2.1. to set the Device Address on the thermostat. Site Supervisor 4.4. Device and COM Port Setup in Site Supervisor 4.4.1.
> Com Port data size: 8 > Com Port Parity: None > Com Port Stop Bits: 1 Click Save to save the changes. Figure 4-9 - Set Com Port Parameters 38 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
4.4.3. Adding the Touchscreen Thermostat Application in Site Supervisor Click the Control Inventory icon (the box) Expand the HVAC category and go to the Add Control drop-down list and select Touch T-Stat. Figure 4-10 - Add Controls 4.4.4. Installing and Commissioning the Touchscreen Thermostat Click the Port ID drop-down list to select Modbus assigned to the Com Port selected in Section 4.4.3.
Wait a few seconds and the device should appear Online. Figure 4-12 - Device is Online 40 • Emerson Programmable Touchscreen Thermostat I&O Manual 026-1739 Rev 0...
> Check the configuration of DIP switches to match your network (PU+, EOL and PD-). Table 5-1 - Thermostat Troubleshooting If a problem is still present after the above suggestions, please contact Emerson Electronics and Solutions Technical Support 770-425-2724 or email [email protected].
This device must accept any interference received, including interference that may cause undesired operation CAUTION! Any changes or modifications not approved by Emerson can void the user’s authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
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Technologies Retail Solutions, Inc. and/or its affiliates (collectively “Emerson”), reserves the right to modify the designs or specifica- tions of such products at any time without notice. Emerson does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any product remains solely with the purchaser and end-...