BACnet TStat by Quest Controls User’s Manual Rev 1.1 COPYRIGHT NOTICE Copyright © 2011 by Quest Controls Inc. (QUEST). The material discussed in this publication is the proprietary property of QUEST. QUEST retains all rights to reproduction and distribution of this publication. Specifications are subject to change without notice. Rev 1.
Table of Contents 1.0 Overview ................................................................................................................................................. 2 1.1 Applications......................................................................................................................................... 2 1.2 Features and Benefits ......................................................................................................................... 2 2.
Figure 4 ‐ Programming Flow.........................................................................................................................................7 Figure 5 ‐ Setting Communication Jumpers ................................................................................................................. 12 1.0 Overview The Quest Controls BACnet thermostat is designed for unitary equipment with single or multi‐stage heating and cooling packages.
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" Back mounting plate 3-5/8", 3-7/8" with cover 1-1/16" 1-9/16" 1/2" Figure 1 – Back Plate Mounting 2.1 Installing the mounting plate 1.
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.
3. Typical Wiring Diagram CT For remote mounting of zone sensor From Q3 Gateway To Additional T-Stats + - + - + - + - + - + ZONE SUPPLY FAN P MA D IN DO- D1+ C BUS AOP WIRE RACEWAY FAN COOL HEAT R C G Y 1 Y2 W/B W2 O Y1 Y2 W1 W2 Cool Stage 2 Heat Stage 1 Heat Stage 2 24VAC F Cool Stage 1 C Supply Fan R HVAC Control Interface Located in HVAC system Figure 3 – Typical Wiring Diagram BACnet T‐Stat User’s Manual Rev 1.
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.
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.
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.
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.
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.
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.
(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.
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.
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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 & Gas heat) and heatpump units.
Analog Input Object Detail Supported Properties Writable? Property Range Restrictions Object Identifier N N/A Object Name N N/A Description N N/A Object Type N N/A Present Value N N/A Status Flags N N/A Event State N N/A Out of Service N N/A Units N N/A Instance Description Writable? Notes AI-0 Raw Zone Temp N Fahrenheit or Celsius reading of the zone thermistor, directly from the sensor (no offsets applied).
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 Y None 0..4194 0 MS/TP Network address should be unique for each network. You should restart the unit after changing the address. Note that the device object id is the MSTP Network * 1000 + the MAC address. AV-2 Zone Offset Y TempF or TempC -9F..9F 0 Added to AI-0 (Zone sensor) to create AV-19 (Zone Reading).
Instance Description Writable? Units Limits Default Notes cooling stage. AV-14 Heat Min On Time Y Seconds 60..600 120 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 Y Seconds 60..600 120 The minimum time that a heating stage must be off before the system will change into that particular heating stage. AV-16 Max User Spt Adjust Y TempF or TempC 0..
Instance Description Writable? Units Limits Default AV-27 Mon Sched Win 2 Start Y Minutes 0..1440 0 Number of minutes since midnight to begin occupied mode for this window. AV-28 Mon Sched Win 2 End Y Minutes 0..1440 0 Number of minutes since midnight to end occupied mode for this window. Set both the Start and End values to 0 to mark this window as unused. AV-29 Tue Sched Win 1 Start Y Minutes 0..1440 0 Number of minutes since midnight to begin occupied mode for this window.
Instance Description Writable? Units Limits Default Notes 0 to mark this window as unused. AV-39 Thu Sched Win 2 Start Y Minutes 0..1440 0 Number of minutes since midnight to begin occupied mode for this window. AV-40 Thu Sched Win 2 End Y Minutes 0..1440 0 Number of minutes since midnight to end occupied mode for this window. Set both the Start and End values to 0 to mark this window as unused. AV-41 Fri Sched Win 1 Start Y Minutes 0..
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 Y Minutes 0..1440 0 Number of minutes since midnight to begin occupied mode for this window. AV-52 Sun Sched Win 2 End Y Minutes 0..1440 0 Number of minutes since midnight to end occupied mode for this window. Set both the Start and End values to 0 to mark this window as unused.
Supported Properties Writable? Property Range Restrictions Present Value Y (Priority array not available) N/A Status Flags N N/A Event State N N/A Out of Service N N/A Polarity N N/A Instance Description Writable? Default Notes BV-0 Temperature Units Y 0 0 – Use Fahrenheit 1 – Use Celsius BV-1 Occupied Fan Mode Y 0 0 – Fan mode auto 1 – Fan mode always on BV-2 Unoccupied Fan Mode Y 0 0 – Fan mode auto 1 – Fan mode always on BV-3 Force Occupied Mode Y N/A BV-4 Zone
Instance Description Writable? Notes 255 – Remove bypass BO-1 Output Y1 Y 0 – De-energize Output 1 – Energize Output 255 – Remove bypass BO-2 Output Y2 Y 0 – De-energize Output 1 – Energize Output 255 – Remove bypass BO-3 Output W1/B Y 0 – De-energize Output 1 – Energize Output 255 – Remove bypass BO-4 Output W2 Y 0 – De-energize Output 1 – Energize Output 255 – Remove bypass BO-5 Output O Y 0 – De-energize Output 1 – Energize Output 255 – Remove bypass Multistate Input Object Detail
Instance Description Writable? Limits Default Notes MI-2 Control Mode Y 1..4 1 1 – Auto (both cool and heat) 2 – Cooling only 3 – Heating only 4 - Off MI-3 Operation Mode Status N 1..6 0 1 – Off 2 – Cooling stage 1 3 – Cooling stage 2 4 – Heating stage 1 5 – Heating stage 2 6 – Heating stage 3 Device Object Detail Supported Properties Writable? Default Property Range Restrictions Object Identifier N 1 N/A Note that the device object id is the MSTP Network * 1000 + the MAC address.
Supported Properties Writable? Default Property Range Restrictions APDU Timeout N 3 seconds N/A Number of APDU Retries N 3 N/A Database Revision N 0 N/A Maximum Info Frames Y 1 1..127 Maximum Masters Y 127 1..127 Local Time Y N/A N/A Local Date Y N/A N/A UTC Offset Y 0 -780..780 Daylight Savings Status Y False N/A Notes Minutes offset from UTC. Negative numbers are east of zero degree meridian.
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. : ISO 10646 (UTF-8) ISO 10646 (UCS-2) IBM™/Microsoft™ DBCS ISO 10646 (UCS-4) BACnet T‐Stat User’s Manual Rev 1.
Attachment 2 – Osprey Programming Page BACnet T‐Stat User’s Manual Rev 1.