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CONTEMPORARY CONTROLS BAST-421C-B2 BACnet Communicating Thermostat User Manual
Floating Deadband
The Heat and Cool temperature setpoints could be “attached” together. This
•
means that as one setpoint is adjusted and “hits” against the deadband
region, it will “push” the deadband region and the other setpoint along the
temperature setpoint axis to allow for adjustment while maintaining the
configured deadband. If the setpoint is adjusted back the other way, it will
“pull” the deadband region and the other setpoint along the temperature
setpoint axis.
Minimum Cooling Setpoint and Maximum Heating Setpoint
•
Minimum Cooling Setpoint will be confined by set point low limit plus
dead band and Minimum cooling setpoint [AV-39] Default 18°C/ 65°F
•
Maximum Heating Setpoint will be confined by set point high limit
minus dead band and Maximum heating setpoint [AV-40] Default
25°C/ 77°F
Fan Control Output
•
Lowest Fan Speed is the speed the fan will default to after a control action
(Heating or Cooling) with fan in AUTO mode. If the lowest fan speed
[MSV4] is set as “Stop (1)”, the fan will automatically shut off after the
control action plus a 2-minute fan-off time delay. During this delay, the AUTO
icon will flash. If lowest fan speed is set to “Low (2)” the fan will run
continuously after a control action
•
Fan Mode can be toggled between AUTO or ON by using the FAN button on the
thermostat or BACnet object [MSV0] Fan Mode (BACnet supervisor). By default,
this value is set to “Auto(1)”, the AUTO icon is displayed, and fan operation will
be controlled automatically. To put the fan in ON mode set [MSV0] to “Low(2)”.
This will cause the fan to run continuously (no AUTO icon is displayed). Fan
icon spins when fan is active. The FAN button can be locked to limit user
access to this feature or the BACnet supervisor can be programmed to default
the thermostat to certain state at the end of an occupancy cycle.
UM-15093000-AA2
Page 15
| General | Details |
|---|---|
| Name | CONTEMPORARY CONTROLS BAST-421C-B2 BACnet Communicating Thermostat User Manual |
| Make | CONTEMPORARY CONTROLS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.65 MB |
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