Quest Controls BACnet T-Stat, User Manual

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BACnet T ‐ Stat User’s Manual Rev 1.1, 7/28/11 Page | 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. 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
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Stand alone or network operation to control HVAC system
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BACnet MS/TP communications
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Control based on internal or remote zone temperature sensor
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Monitor zone temp, discharge air temp and fan status
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7 day timeclock with 2 Occupied and 1 UnOccupied schedules
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2 stages of cooling + 2 stages of heat + 1 fan
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Backlight display
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2 line 16 character display for ease of use
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Adjustable Min & Max run time for stages
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Sensor calibration through keypad
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5 button keypad and display for easy programming
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Lockout or limit user access via password
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Temp displayed in F or C
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Override with selectable Occupied timer (0 to 240 min)
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BACnet MAC address & BACnet Net address
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Temp user adjust limit
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Daylight Savings Time adjustment
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Use industry standard 10k type 3 thermistor