Sensors; Heat Cool Mode Status - Trane IntelliPak 2 Installation, Operation And Maintenance Manual

Occupied Bypass Operation: 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.
Occupied Standby Operation: 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 32. Occupancy Status
Occupancy Occupancy
Request Input
Occupied Occupied
Occupied Unoccupied
Occupied Unoccupied
Unoccupied Any State
Unoccupied Any State
Bypass Occupied
Bypass Unoccupied
Bypass Unoccupied
Standby Any State
Standby Any State
Auto Occupied
Auto Unoccupied
Auto Unoccupied
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
RT-SVX073A-EN
Bypass Occupancy
Timer Status
Any Number Occupied
Zero Standby
Not Zero Bypass
Zero Unoccupied
Not Zero Bypass
Any Number Occupied
Zero Standby
Not Zero Bypass
Zero Standby
Not Zero Bypass
Any Number Occupied
Zero Unoccupied
Not Zero Bypass
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 for heating and
cooling control. 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. Most
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.
Heat
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.
Unit Startup
63