Trane Intellipak 2 Service Manual

General Information
RT-SVX24K-EN11
modules, sensors, remote panels, and customer binary
contacts to satisfy the applicable request for economizing,
mechanical cooling, heating, and ventilation. Refer to the
following discussion for an explanation of each module
function.
Rooftop Module (RTM - Standard on all units)
The rooftop Module (RTM) responds to cooling, heating,
and ventilation requests by energizing the proper unit
components based on information received from other
unit modules, sensors,
remote...

General Information
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outside air humidity sensor, and the return air temperature
sensor to utilize the lowest possible humidity level when
considering economizer operation. In addition, it receives
space pressure information which is used to maintain the
space pressure to within the setpoint control band. Refer
toFigure 1 for the Humidity vs. Voltage input values.
Multi Purpose Module MPM (Optional - used
with Return Fan Control, Energy Recovery, and
Evaporative Condensers)
The MPM supports...

General Information
RT-SVX24K-EN13
Generic Building Automation System Module
(GBAS - Optional used with
non-Trane building control systems)
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 the form of analog inputs for cooling, heating,
supply air pressure, and a binary Input for demand limit. Refer to the “Field Installed Control Wiring” section for the
input wiring to the GBAS module...

General Information
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Return Air Temperature Sensor
An analog input device used with a return humidity sensor
on CV and VAV applications when the comparative
enthalpy option is ordered. It monitors the return air
temperature and compares it to the outdoor temperature
to establish which temperature is best suited to maintain
the cooling requirements. It is mounted in the return air
section and is connected to the ECEM.
Leaving Evaporator Temperature Sensor
An analog input device used with CV...

General Information
RT-SVX24K-EN15
remain off for a minimum of three minutes. If the LP cutout
trips four consecutive times during the first three minutes
of operation, the compressors on that circuit will be locked
out and a manual reset diagnostic is initiated.
Saturated Condenser Temperature Sensors
Analog input devices used on CV and VAV applications
mounted inside a temperature well located on a
condenser tube bend. They monitor the saturated
refrigerant temperature inside the condenser coil and...

General Information
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Morning Warm-Up—Zone Heat
When a system changes from an unoccupied to an
occupied mode, or switches from STOPPED to AUTO, or
power is applied to a unit with the MWU option, the heater
in the unit or external heat will be brought on if the space
temperature is below the MWU setpoint. The heat will
remain on until the temperature reaches the MWU
setpoint.
If the unit is VAV, then the VAV box/unocc relay will
continue to stay in the unoccupied position and the VFD
output...

General Information
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g. turn the supply fan “Off”
h. closes the outside air damper
i. turns “On” the SERVICE light at the Remote Panel
j. initiates a “Low Temp Limit” diagnostic to the
Human Interface
Compressor Circuit Breakers
The Scroll Compressors are protected by circuit breakerswhich interrupt the power supply to the compressors if the
current exceeds the breakers “must trip” value. During a
request for compressor operation, if the Compressor
Module detects a problem outside normal...

General Information
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Space Temperature Averaging
Space temperature averaging for Constant Volume
applications is accomplished by wiring a number of
remote sensors in a series/parallel circuit.
The fewest number of sensors required to accomplish space temperature averaging is four. The Space
Temperature Averaging with Multiple Sensors figure illustrates a single sensor circuit (Single Zone), four
sensors wired in a series/parallel circuit (Four Zone), nine
sensors wired in a series/parallel...

General Information
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Unit Control Modules
Unit control modules are microelectronic circuit boards
designed to perform specific unit functions. The control
modules, through proportional/integral control
algorithms, provide the best possible comfort level for the
customer. They are mounted in the control panel and are
factory wired to their respective internal components.
The control modules receive and interpret information from other unit modules, sensors, remote panels, and
customer binary...

General Information
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Single Zone Variable Air Volume
(SZVAV) Only
The IntelliPak controls platform will support Single Zone
VAV as an optional unit control type in order to meetASHRAE 90.1. The basic control will be a hybrid VAV/CV configured unit that provides discharge temperature
control to a varying discharge air temperature target
setpoint based on the space temperature and/or humidity
conditions. Concurrently, the unit will control and optimize
the supply fan speed to maintain the...