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PIR APPLICATION GUIDE FOR TB7200 AND TB7300 SERIES THERMOSTATS
23 63-4526—01
3. TB7300 networked fan coil application—3 levels of occupancy with a remote PIR sensor
Advanced network interface can be obtained when thermostats are fully integrated to the reservation system
In these cases, the occupancy network commands state enumerations text presented by a front end system can be expanded to
better represent the nature of the application.
Sequence of operation
At initial power-up, when the thermostat 24 Vac power supply is applied; if there is no occupancy network command received by
the thermostat and if the PIR devices do not detect any movement, the initial occupancy of the zone will be stand-by mode.
Occupied state network command
At any time, an occupied network command will always force the local zone to be in occupied mode and to use the occupied
setpoints.
Unoccupied state network command
At any time, an unoccupied network command will always force the local zone to be in unoccupied mode and to use the
unoccupied setpoints. If the thermostat local override function is not locked out by configuration, the local user may initiate a
temporary local override to occupied as dictated by the temporary occupancy time configuration parameter setting.
Local occupancy state network command
If previously in unoccupied mode when the thermostat receives a local occupancy state network command, the local PIR
occupancy loop will now be enabled. If the PIR devices do not then detect any movements, the occupancy of the zone will be
stand-by mode.
As soon as the PIR device detects a movement or motion, the occupancy status switches to occupied and the occupied setpoints
are used. The room will then be in occupied mode until a door toggle is detected.
If a door toggle is detected, then the room switches to stand-by mode and the stand-by setpoints are used. If any occupants are
left in the room, local movements must be seen to resume the occupied mode.
While in stand-by mode, if no motion is detected in the zone for the entire unoccupied timer duration, then the room switches to
unoccupied mode and the unoccupied setpoints are used.
At anytime, if the PIR device detects a local movement or motion, the occupancy status switches to occupied and the occupied
setpoints are used.
Set-up and Configuration
Thermostat used TB73x5X5014X (lodging models)
PIR used BI1 configured for remote PIR sensor
BI2 Configuration Door dry contact
Stand-by timer value Not used
Unoccupied timer value 6.0 hours
Network interface used BACnet MS/TP or wireless
Occupancy network commands state Front end system state text examples
Local Occupancy ( PIR active ) Room rented PIR economy enabled
Occupied Room rented high comfort assured
Unoccupied Room not rented
Remote PIR Sensor
BACnet or Echelon Network
Door Switch
BACnet or wireless network
Door Switch
Remote PIR Sensor
Unoccupied Time
= 6 Hours
Always
Occupied
First Movement Detected
by a PIR Device
Occupied
Stand-By
Unoccupîed
Time
Door Open/Close
Toggle Detected
Unoccupied Time Elapsed
= Unoccupied Mode
Network Command
= Local PIR Occupancy
Initial Network
Command = Unoccupied
PIR Movements Ignored
Network Command
= Occupied
PIR Movements Ignored
Network Command
= Unoccupied
PIR Movements Ignored