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control to the normal occupied setpoints and comfort
demands of the occupants.
UUnnooccccuuppiieedd OOppeerraattiioonn: The IntelliPak unit is typically
shut down and is not providing temperature control to
the normal occupied setpoints. No ventilation is
required or provided. Temperature control is
determined by energy conservation and building
protection thresholds.
OOccccuuppiieedd BByyppaassss OOppeerraattiioonn: The IntelliPak unit is
temporarily in an Occupied state for some period of
time and will automatically return to unoccupied
operation when the bypass timer expires. The
Occupied Bypass Timer is a user-adjustable field.
However setting the timer to 0 minutes effectively
disables Timed Override at the equipment controller.
OOccccuuppiieedd SSttaannddbbyy OOppeerraattiioonn: Standby does not
apply to a discharge air controller (VVDA, CVDA unit
type). These units treat Standby as Occupied. Space
temperature control units in an Occupied-Standby state
are controlling to occupied standby temperature
setpoints. Normal operation will resume when
Occupancy Status goes to an Occupied state.
Table 28. Occupancy Status
Occupancy
Request
Occupancy
Input
Bypass
Timer
Occupancy
Status
Occupied Occupied Any Number Occupied
Occupied Unoccupied Zero Standby
Occupied Unoccupied Not Zero Bypass
Unoccupied Any State Zero Unoccupied
Unoccupied Any State Not Zero Bypass
Bypass
Occupied Any Number Occupied
Bypass Unoccupied Zero Standby
Bypass Unoccupied Not Zero Bypass
Standby Any State Zero Standby
Standby Any State Not Zero Bypass
Auto Occupied Any Number Occupied
Auto Unoccupied Zero Unoccupied
Auto Unoccupied Not Zero Bypass
Timed Override
Timed Override (TOV) is a function that allows a user,
located in the conditioned space, to temporarily
override the IntelliPak operation from unoccupied
mode to occupied mode (referred to as Occupied-
Bypass). To accomplish this, Trane wired or wireless
zone sensor devices are equipped with “On” and
“Cancel” push buttons. Some sensors refer to the
buttons as “Occupied” and “Unoccupied”. Timed
override operation applies, in some way, to all unit
types.
On Wired sensors, the timed override request (ON) and
timed override cancel (CANCEL) buttons momentary
modify the zone temperature thermistor resistance to a
value outside the normal zone temperature operating
range. The Symbio 800 controller detects this change;
however, this momentary button press does not
disrupt the space temperature value being used. The
press duration is 0.5 to 8 seconds.
Wireless sensors process the timed override request/
cancel signal at the sensor and communicate the
appropriate timed override status (mode).
Service Pin Message Request
A secondary feature of wired zone sensors is Service
Pin Message Request, not associated with TOV. An On/
Occupied push button press for 8 to 30 seconds can
initiate Neuron ID and Program ID message broadcast
on a LON network. This function is used to install and
troubleshoot LON networks. This feature benefits
installation of a LON device by initiating the service pin
message from a zone sensor rather than at the
equipment.
Sensors
The IntelliPak unit uses many types of sensors. Many
sensors are factory installed. Some sensors are field
installed and may be wired or wireless. Field installed
wired sensors are available from Trane and many other
sources. In every case, the correct type of sensor must
be used.
All sensors are factory calibrated and require no field
re-calibration. See the Product Catalog for more
information on sensors.
Heat Cool Mode Status
Heat Cool Mode Status reports the unit mode of
operation. The Symbio 800 can receive mode inputs
from different external and local input sources that are
arbitrated; however, the control active operating mode
represents the capacity being delivered to the building
and reported via Heat Cool Mode Status.
HHeeaatt
In this mode, the controls provide heating capacity per
heat type installed, active heat setpoint, and
occupancy. Application requirements such as full or
modulating air flow are also considered in heating
mode. All forms of cooling capacity are effectively
disabled.
If Heat is the requested mode when the unit does not
have heat capacity configured or heat is disabled, Heat
is reported as Heat Cool Mode Status. If the unit cannot
provide heat, the supply fan is enabled to operate (as
configured) to provide ventilation during occupied
modes of operation.
SSeeqquueennccee ooff OOppeerraattiioonn
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