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Optional Occupancy Detection Equipment Operation
Optional Occupancy Detection Equipment Operation
The T180 thermostat can be used with optional S200 series
occupancy detection equipment. Purchasing and installing this
equipment to compliment the thermostat adds energy savings
by setting back HVAC operation during occupied and
unoccupied times.
Occupancy Operation (Install JP3)
The T180 can be used with PECO S200 series occupancy
detection equipment. The occupancy and switch inputs are
designed to connect to the SB200 slave sensor and SE200 door
switch.
The Occupancy Sensor is a low-level switch that is open when
there is occupancy and closed when unoccupied.
The Door Switch is a low-level switch that is open when the
door is open and closed when the door is closed. This system
requires both an Occupancy Sensor and a Door Switch.
Operation From an Occupied Mode
The T180 operates normally and looks for a door close. A door
close signal initiates occupancy status detection.
If occupancy is detected, the T180 will maintain normal
HVAC control. It then waits for a door open signal before
determining occupancy again.
If no occupancy signal is detected within 2 minutes, the T180
changes to unoccupied mode and controls at setback
temperature values.
Operation From an Unoccupied Mode
In an Unoccupied State, the T180 sets heating and cooling set
points to setback values, as determined in the service menu. In
this mode, the fan is automatically set to cycle with demand.
The T180 will continually monitor the room for occupancy.
Any occupancy detection, including door open, will set the
operation to occupied mode.
In either mode, if the door is left open for more than 2 minutes
the T180 will disable the HVAC system. A one-time ten
minutes override can be initiated by pressing any thermostat
keypad.
Optional detection equipment configurations and operation are
described below.
SB200-001 Occupancy Sensor
The SB200-001 occupancy sensor
occupancy sensor for automatic control of a guest room HVAC
system. It incorporates an innovative dual delay processor
which allows the sensor to verify the nature of occupancies,
and is capable of eliminating unnecessary actuations of the
HVAC device due to unintentional passages or short time
occupancies. The sensor may also serve as a slave sensor
(Figure 12, page
15).
14
(Figure
11) serves as an
The sensor switch is open in occupied mode and closed in
unoccupied mode. An optional door and/or window switch
(Figure
11) is open when the door/window is open and is
closed when the door/window is closed.
Note: To use this configuration, a jumper must be installed to
JP3 to allow occupancy input.
Note: An optional door and/or window switch
be added for use with the SB200-001 sensor.
Operation
In an occupied mode, the thermostat operates normally and
looks for a door open signal. When the door opens, the
thermostat waits for a door close signal. If the door is open for
more than two minutes, the thermostat turns the HVAC system
outputs to OFF. During this two minute period, if any button is
pressed on the keypad, the time delay is extended to ten
minutes. The time delay can only be extended once. Once the
HVAC outputs transition to OFF, a door closure is required to
re-enable the outputs. When the door closes, the thermostat
starts a two minute timer and tries to detect occupancy. If the
timer expires and no occupancy is detected, the thermostat
transitions to an unoccupied state. If occupancy is detected
while the timer is running, the thermostat will remain in the
occupied mode.
In an unoccupied mode, the thermostat sets heating and
cooling set points to setback values as determined by factory
or user settings. The fan is automatically set to cycle with
demand. The thermostat continually monitors the occupancy
sensor and will enter into occupied mode if occupancy is
detected.
If the installation is only using a door/window switch, the
thermostat will disable the HVAC outputs if this output is open
for longer than two minutes.
To enable door/window switch only operation, install a jumper
to JP3 (see
Installing, Mounting and Wiring the Thermostat‚
page
4) and the occupancy input must be shorted to circuit
common.
Figure 11: Optional equipment configuration #1
(Figure
11) can
Daikin IM 1019
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