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Installation
Emergency Stop Switch (5S71)
A normally closed (N.C.) switch (5S71) wired to the RTM may be used during emergency situations
to shut down all unit operations. When opened, an immediate shutdown occurs. An emergency
stop diagnostic is entered into the Human Interface and the unit must be manually reset. Refer to
the appropriate illustrations in
Figure 34, p. 69
or
Figure 41, p. 89
for the proper connection
terminals in the unit control panel. The switch must be rated for 12 ma @ 24 VDC minimum.
Occupied/Unoccupied Contacts (5K86)
To provide Night Setback control if a remote panel with NSB (5U58) was not ordered, a field
supplied contact (5K86) must be installed. This binary input provides the Occupied/Unoccupied
status information of the building to the RTM. It can be initiated by a time clock, or a Building
Automation System control output. The relay's contacts must be rated for 12 ma @ 24 VDC
minimum. Refer to the appropriate illustrations in
Figure 34, p. 69
or
Figure 41, p. 89
for the proper
connection terminals in the unit control panel.
Demand Limit Relay (5K89)
If the unit is equipped with a Generic BAS Module (1U51), (i.e. unit model number digit 21+ is a "K"),
a normally open (N.O.) switch may be used to limit the electrical power usage during peak periods.
When demand limit is initiated, the mechanical cooling and heating operation is limited to either
50% or 100%. Demand limit can be initiated by a toggle switch closure, a time clock, or an ICSTM
control output. These contacts must be rated for 12 ma @ 24 VDC minimum.
Outside Air Sensor (3RT3) - (BAYSENS016*)
This device senses the outdoor air temperature and sends this information in the form of an analog
input to the RTM. It's factory installed on units with an economizer, but can be field provided/
installed and used for informational purposes on units without an economizer. Refer to the
appropriate illustrations in
Figure 34, p. 69
or
Figure 41, p. 89
for the proper connection terminals
in the unit control panel. Refer to
Table 30, p. 82
for Temperature vs. Resistance coefficient.
Generic Building Automation System (1U51)
The Generic Building Automation System (GBAS) module allows a non-Trane building control
system to communicate with the rooftop unit and accepts external setpoints in form of analog
inputs for cooling, heating, demand limiting, and supply air pressure parameters.
Generic Building Automation System Module (GBAS 0-5 VDC) - Provided for those cases where
non-Tracer building management system is used. The GBAS module provides a binary input for
Demand Limiting, four (4) analog inputs for setpoint adjustment and five (5) relay outputs for
diagnostic reporting. Inputs can use a potentiometer or 0-5 VDC signal.
Generic Building Automation System Module (GBAS 0-10 VDC) - Used to provide broad control
capabilities for building automation systems other than Trane's Tracer system. The GBAS module
provides a binary input for Demand Limiting, four (4) analog inputs for setpoint adjustment and
four (4) analog outputs as well as one (1) relay output for diagnostic reporting. Inputs can use a
potentiometer or 0-10 VDC signal.
Refer to
Figure 41
for the input wiring to the GBAS module and the various desired setpoints with
the corresponding DC voltage inputs for both VAV and CV applications.
For complete application details of the module, refer to Engineering Bulletin UN-PRB001-EN.
Wall or Duct Mount Humidity Sensor (5U108) - (BAYSENS036*)
This field-installed humidity sensor is mounted in the space or in the return air duct, sending an
analog input to the RTM or ECEM. It must be ordered/installed for dehumidification control with
modulating hot gas reheat, but can also be used for humidification applications.
RT-SVX36G-EN
83
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