Figure 4 ‐ Programming Flow ............................ 7 Figure 5 ‐ Setting Communication Jumpers ......................... 1 2 1.0 Overview The Quest Controls BACnet thermostat is designed for unitary equipment with single or multi‐stage heating and cooling packages. It is an easy to use thermostat for small to medium sized commercial buildings. The Quest Controls BACnet T‐Stat provides functionality and configurability to accommodate most conventional & heatpump applications. The application specific approach ensures that commissioning is straightforward and hassle‐free. Each BACnet T‐Stat contains internal programming logic & an internal schedule to operate independently and can be configured to lockout local access to ensure programming integrity and ongoing correct control. The BACnet T‐Stat can also remotely communicate through BACnet MSTP with the OspreyFMS dashboard. The BACnet T‐Stat contains an onboard temp sensor making it suitable for zone mounting, or remote input for panel mounting. The BACnet T‐Stat includes an additional 4/20 milliamp input, digital input, and analog & digital outputs. 1.1 Applications Quest’s BACnet thermostat is designed to control most unitary hvac equipment including: Rooftop Units Split‐systems Gas Packs Heat Pumps 1.2 Features and Benefits • Stand alone or network operation to control HVAC system • BACnet MS/TP communications ...
2.0 Installation / Wiring The BACnet TStat utilizes a simpletounderstand, application specific configuration for wiring to either a Single or TwoStage Conventional or Heat Pump Mechanical Unit. Back mounting plate 5-3/8", 5-1/2" with cover 3-1/4" 1-1/2" 2-1/4" 1-1/16" 1-9/16" 1/2" Figure 1 – Back Plate Mounting 2.1 Installing the mounting plate 1. Plan the Location – When zone mounting, the T‐Stat should be near eye level, on an interior wall and away from external sources of heat or cold (windows, doors, HVAC supply ducts, Servers, etc) 2. Prepare the Area ‐ The mounting screw holes will line up on a standard duplex outlet box, or can be flush mounted to the wall. When flush mounting, ensure clearance for the wires to exit through the center window on the back plate. Install outlet box or screw anchors, run thermostat wires, sensor wire, and bus cable. 3. Remove the cover ‐ The cover of the T‐Stat is held on by four clips, two on the top and two on the bottom. Remove the cover carefully, the cover may be snug and depressing the clips through the slot openings may help in getting the cover off. BACnet T‐Stat User’s Manual Rev 1.1, 7/28/11 Page | 3 ...
4. Mount the Plate ‐ Dress the wires through the center window on the back plate and install mounting screws. Tighten screws to ensure the plate is mounted securely, but do not over tighten and warp the back plate. 2.2 Wiring 1. Terminate the Wire Connections – Cut off excess wire, dress wire flush to the back panel and strip 1/4” of insulation to expose conductor. Insert and tighten using the Wire Terminations diagram. 2. Connection Descriptions: ZONE + For mounting a remote temperature sensor, set Jumper ZONE – J1/2 to top & middle and SENS SPOT to off on front panel SUPPLY + Supply Duct temperature sensor SUPPLY – FAN P + FAN Proof of Run current transducer FAN P – MA + 24 mA input for optional sensor MA 24/‐ “On future models” D IN + Digital input for optional input D IN – ...
3. Typical Wiring Diagram For remote mounting of zone sensor From Q3 Gateway To Additional T-Stats DO- D1+ C ZONE SUPPLY FAN P D IN WIRE RACEWAY FAN COOL HEAT R C G Y 1 Y2 W/B W2 O 24VAC HVAC Control Interface Located in HVAC system ...
3.0 Front Panel Display/Keypad Operation The Quest BACnet T‐Stat has a 2X16 character backlit LCD display and five buttons for status review and programming. The backlit is normally off but will turn on with a press of any key. The backlight will turn off after a few seconds of no keys being pressed. The first press of the keypad will turn on the backlight and tell the T‐Stat to be ready for additional key presses. All keypad operation described below is after you press and release any key to enable the backlight. 3.1 Run Mode The display will show the current day of the week and time along with the zone sensor reading on the top line. The second line will show the system status i.e. calling for cooling or heating along with the fan status of ON or Auto. Additional status information can be reviewed by pressing the left or right arrow keys. This will cycle the display on the second line to show: Occupied status, current setpoints, control mode, Fan proof status and supply air reading. 3.2 Occupied Override Press the center button until the T‐Stat asks if you want to enter occupied override mode. The default value is No, so use the up or down arrow to change the value to Yes. Then press the center button again to accept your choice. If you choose Yes then the T‐Stat will be in occupied override mode for the programmed delay time or unless the user presses the center button again to disable the occupied override mode. 3.3 Adjusting Setpoints The T‐Stat will allow users to adjust the setpoints up or down based upon the allowable amount programmed into the T‐Stat. Press either the up or down arrow until the Setpoint Change message appears on line one. Then use the up/down arrows to increase or decrease the setpoints. Note both the heat and cool setpoints will move the same amount to maintain the factory specified operating window. The pre programmed limit will prevent the user from adjusting the setpoints out of the allowable range. Press the center button to accept your changes. These changes will stay in place during the occupied hours and reset when the Stat goes into unoccupied. If the Stat was in the unoccupied mode when the user pressed the up/down arrows it will go into occupied override mode (same as pressing the center button) and allow the setpoint adjustment. 3.4 Programming the TStat Press and hold the left and right arrow simultaneously until the display Access Code says Program Choices. The screen is password protected with the factory default password of 11. Use the up/down arrow keys to change the password value and press the center button to log in. Passwords can be turned off or changed to any value from 11 to 99 via BACnet. From this menu use the up/down arrows to navigate to the BACnet T‐Stat User’s Manual Rev 1.1, 7/28/11 ...
available choices: System, Setpoints, Schedules, Clock & Run. Choosing one of these options will present the available choices. Use the up/down arrows to cycle through the choices for each field and the center button to accept the change and move to the next choice. Once you start in one of the program menus, you must step through all choices until the end in order to accept your changes. Press the center button to accept the current program value and go on to the next choice. The factory default values are underlined below: NOTE: Factory default for temperature readings is in Fahrenheit. 3.4.1 Programming flow: Mon 09:09A 81 F Access Code Program Choices Entering System Cool1 Fan Auto System Menu Program Choices Entering Run Menu Program Choices Entering Schedules Schedules Menu Program Choices Entering Clock Menu Clock Program Choices Entering Setpoints Setpoints Menu Figure 4 ‐ Programming Flow 3.4.2 Sub Menus System:This is the menu for doing the initial system setup. Items programmed under this menu are: HVAC type: Conventional 1, Conventional 2, Heat pump 1, Heat pump 2, Gas heat 1, Gas heat 2 Control Mode: Auto, Cool, Heat, Off ...
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Setpoints: Used to set all of the T‐Stats setpoints Occ Cool Spt: 40‐90 (72) Occ Heat Spt: 40‐90 (68) Unocc Cool Spt: 40‐90 (85) Unocc Heat Spt: 40‐90 (55) Cool Stg 2 Delta: 1‐9 (2) Heat Stg 2 Delta: 1‐9 (2) C/H Min Delta: 2‐9 (4) User Adjust Max: 0‐5 (5) Clock: This is used to set the system clock. Use the right arrow key to move to the next field and the up/down arrow to change the field. Time is entered in 24 hour format. Press the center button to accept changes. Schedules: Schedules support two occupied windows per day. The top line will show the day of the week and either window 1 or 2. Use the up/down arrow keys to change the field’s value and the left/right arrow keys to change to the hours and minutes fields. Time is entered in 24 hour format. Press the center button to accept the changes to the window and move to the next available window. You must cycle through all windows to get to the end and complete the programming. It is acceptable to just press the center button to skip and move on to the next window. In this example, on Monday morning at 8am the T‐Stat will switch to the occupied setpoints. This will continue until 5pm when it will revert to the unoccupied settings. Since the window 2 time is all zeros, there will not be a second occupied window for that day. In this example, there will be two occupied mode changes on Monday. The first is from 5am and runs until 8am and the second will occur at 4:30pm and continue until 10pm. ...
4.0 BacNET Programming The BACnet thermostat may be programmed using either the keypad and display or through the OspreyFMS web interface. Keypad can also be locked out to require remote programming only. Before programming with the OspreyFMS interface, then you must set the address, baud rate and temperature scale. 5.0 OspreyFMS Interface OspreyFMS provides a tool for easy, straightforward commissioning and ongoing management of the BACnet thermostat. Authorized users can remotely sign into the interface to monitor, schedule, program and alarm. To find out if Osprey FMS is available at your installation, speak with the project manager or contact Quest Controls for more information. 5.1 Logging In OspreyFMS is compatible with most versions of Internet Explorer, Firefox, Chrome and Safari running on Windows OS, OS X, iOS or any operating system with browser support for javascript. To log in, go to https://www.ospreyfms.com. If you have an already assigned user name and password enter it here (Note: both are cAsE sEnSiTiVe). To a request a login, click on the link at the bottom of the page or contact your project manager. 5.2 Main Dashboard Page After logging in, the main dashboard page provides monitoring and alarming information on all your connected sites. Clicking on a site on the left of the map will bring up the connected controls, including the BACnet thermostats in the table below the map. Each icon below represents a BACnet thermostat and signifies its current operating status. For details consult the OspreyFMS manual. BACnet T‐Stat User’s Manual Rev 1.1, 7/28/11 Page | 9 ...
To access the programming page, click on the BACnet thermostat icon in the bottom table. A popup will appear. Click on the Program tab, and then click on the Controller Programming button at the bottom right. 5.3 Programming Page The programming page provides an interface for making any change to program settings on the BACnet thermostat. The page also provides tools for assigning schedules and alarms. For details on creating schedules and alarms refer to the OspreyFMS manual. For a larger image of the Programming Page please refer to Attachment 2 at the end of this manual. BACnet T‐Stat User’s Manual Rev 1.1, 7/28/11 Page | 10 ...
Making changes in the Programming Page is straightforward and can be made by typing in the desired value. All programming capabilities outlined earlier in the manual are reflected on this page. Sections on the page include: • Heating & Cooling Setpoints • Schedule Selection • Alarm Options • System Mode Options • Calibrations & Lockouts • Stage Offsets & Differentials • Fan Proving & Local Override Once all changes are completed, click the Save Changes button. Changes will be sent down via the internet to the respective BACnet thermostat. Allow 5 minutes for the changes to take effect. 6.0 Setting Communications Jumpers The jumpers are on the T‐Stat main board, remove the mounting plate and turn over the T‐Stat to locate the jumpers. Refer to Figure 5 for jumper identification and settings. 6.1 RS485 End of Line and Biasing Wiring of the RS485 network will require the use of End of Line and Bias Resistors. We have Jumpers J13 , J14 & J17 for this. Function is as follows to: enable the End of Line resistor (EOL) move jumper J13 to pins 1 & 2 (UP). To enable line biasing the move jumpers J14 & J17 to positions 1 &2 (UP). EOL is required for the last board in a daisy chaining. Biasing is only required if needed on the network. Please note that jumper 13 is second from left, 14 is third and 17 is fifth (or last jumper). 6.2 Remote Zone Sensor Jumper 12 When a remote mounted Zone Temperature sensor is used, the T‐Stat NOTE: Jumpers J15 & J16 are for future configuration and must be left in the disabled position on pins 2 & 3. The board will experience communications issues if those jumpers are moved. BACnet T‐Stat User’s Manual Rev 1.1, 7/28/11 Page | 11 ...
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(Future Use) Jumper on pins 1 &2 enables “End of Line Resistor” Jumper on pins 1 &2 enables “Line Biasing” (Future Use) Jumper on pins 1 &2 enables “Line Biasing” Denotes pin 1 Jumper on pins 1 &2 when using a “Remote Zone Temperature Sensor” Denotes pin 1 Figure 5 ‐ Setting Communication Jumpers BACnet T‐Stat User’s Manual Rev 1.1, 7/28/11 Page | 12 ...
7.0 Care and Cleaning The BACnet T‐Stat should provide years of uninterrupted service. Minimal preventive maintenance is required. However; it is important to make sure that the T‐ Stat is kept free of dust. A dusty T‐Stat will not allow air to circulate properly around the built‐in temperature sensor effecting proper operation of the unit. 8.0 Troubleshooting LCD Screen is dark and no characters are Remove cover and verify presence of power on the “R” displayed terminal, check connection of the common on the “C” terminal. Check for presence of 24VAC between R and C. T‐Stat mode say Cool1, but compressor Verify connection to HVAC unit. Ensure short‐cycle timer is does not engage not inhibiting unit. Clock loses time after power failure Replace the CR1025 Lithium battery Buttons do not respond Press buttons slowly, some functions may take pressing the button twice. Display is corrupted First, cycle power to the unit. If this does not correct the problem, reset system by removing the T‐Stat body from the mounting plate. Then return the body to the mounting plate while depressing the up arrow, center button and down arrow all at the same time. The display will respond with “Cold Sense”, these buttons must be held for a minimum 5 second. This will begin a system restart and the display will respond with “Cold Start”. Release the buttons at this time. This action will reset the T‐Stat and return all settings to their factory defaults. All custom schedules will be erased. ...
9.0 Specifications Power Agency Approvals UL UL873 (US) and CSA C22.2 No.24 (Canada) Interoperability FCC Compliant to CFR 47, Part 15, Subpart B, Communication BACnet MS/TP Class A (US) BACnet Profile B‐ASC CA Title 24 Baud Rate 9600, 19200, 38400, 57600, 76800 bps MAC Address BACnet MS/TP MAC Address; Inputs Adjustable from 1 – 127 Digital Input Relay dry contact only across Network Address BACnet Net Address; C terminal to DI1 Adjustable from 1 – 4194 ...
Attachment 1 BACnet Protocol Implementation Conformance Statement Date: June 7, 2011 Vendor Name: Quest Controls, Inc. Product Name: Qstat 10000 Product Model Number: 10000 Application Software Version: 1.0.0 Firmware Revision: 1.0.0 BACnet Protocol Revision: 1 Product Description: The Quest BACnet T-Stat operates as either a standalone or networked controller of unitary HVAC equipment. It is designed for two-stage selectable control of conventional (Electric &...
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Analog Input Object Detail Supported Properties Writable? Property Range Restrictions Object Identifier Object Name Description Object Type Present Value Status Flags Event State Out of Service Units Instance Description Writable? Notes AI-0 Raw Zone Temp Fahrenheit or Celsius reading of the zone thermistor, directly from the sensor (no offsets applied).
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Instance Description Writable? Units Limits Default Notes address. Note that the device object id is the MSTP Network * 1000 + the MAC address. AV-1 MSTP Network None 0..4194 MS/TP Network address should be unique for each network. You should restart the unit after changing the address.
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Instance Description Writable? Units Limits Default Notes cooling stage. AV-14 Heat Min On Time Seconds 60..600 The minimum time that a heating stage must be on before the system will change from that particular stage. AV-15 Heat Min Off Time Seconds 60..600 The minimum time that a heating...
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Instance Description Writable? Units Limits Default Notes AV-27 Mon Sched Win 2 Start Minutes 0..1440 Number of minutes since midnight to begin occupied mode for this window. AV-28 Mon Sched Win 2 End Minutes 0..1440 Number of minutes since midnight to end occupied mode for this window.
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Instance Description Writable? Units Limits Default Notes 0 to mark this window as unused. AV-39 Thu Sched Win 2 Start Minutes 0..1440 Number of minutes since midnight to begin occupied mode for this window. AV-40 Thu Sched Win 2 End Minutes 0..1440 Number of minutes since midnight...
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Instance Description Writable? Units Limits Default Notes window. Set both the Start and End values to 0 to mark this window as unused. AV-51 Sun Sched Win 2 Start Minutes 0..1440 Number of minutes since midnight to begin occupied mode for this window.
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Supported Properties Writable? Property Range Restrictions Present Value Y (Priority array not available) Status Flags Event State Out of Service Polarity Instance Description Writable? Default Notes BV-0 Temperature Units 0 – Use Fahrenheit 1 – Use Celsius BV-1 Occupied Fan Mode 0 –...
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Instance Description Writable? Limits Default Notes MI-2 Control Mode 1..4 1 – Auto (both cool and heat) 2 – Cooling only 3 – Heating only 4 - Off MI-3 Operation Mode Status 1..6 1 – Off 2 – Cooling stage 1 3 –...
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Supported Properties Writable? Default Property Range Notes Restrictions APDU Timeout 3 seconds Number of APDU Retries Database Revision Maximum Info Frames 1..127 Maximum Masters 1..127 Local Time Local Date UTC Offset -780..780 Minutes offset from UTC. Negative numbers are east of zero degree meridian.
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Secure Device - is capable of using BACnet Network Security (NS-SD BIBB) Multiple Application-Specific Keys: Supports encryption (NS-ED BIBB) Key Server (NS-KS BIBB) Character Sets Supported: Indicating support for multiple character sets does not imply that they can all be supported simultaneously. ™...