Honeywell PIR Application Guide for TB7200 and TB7300 Series s 63-4526-01 User Manual

Page 11

PIR APPLICATION GUIDE FOR TB7200 AND TB7300 SERIES THERMOSTATS

63-4526—01

4. TB7300 networked fan coil application —2 levels of occupancy with a remote PIR sensor

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 device does 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 device does not then detect any movement, the occupancy of the zone will be

stand-by mode.

As soon as the PIR device detects a movement or motion while in the local occupancy state network command, the occupancy

status switches to occupied and the occupied setpoints are used.

Anytime the PIR device detects local motion, the elapsed stand-by timer value will be reset. If no motion is detected in the zone

for the entire stand-by timer duration, then the room switches to stand-by mode and the stand-by 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.

While in the local occupancy state network command, the local zone never goes into unoccupied mode and the unoccupied

setpoints are never used.

Set-up and Configuration
Thermostat used

TB73x0X5014X (commercial models)

PIR used

BI1 configured for remote PIR sensor

BI2 Configuration

None, no function

Stand-by timer value

2.0 hours

Unoccupied timer value

0.0 hours

Network interface used

BACnet MS/TP or wireless

Remote PIR Sensor

BACnet or Echelon Network

Remote PIR Sensor

BACnet or wireless network

Unoccupied Time

= 0 Hours

Stand-By Time

= 2 Hours

First Movement Detected
by a PIR Device

Occupied

Stand-By

Unoccupîed

Time

Stand-By Time Elapsed
= Stand-By 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