Ventilation Override Module; Variable Speed Module; Interprocessor Communications Board; Lontalk/Bacnet Communication Interface Module - Trane IntelliPak Installation, Operation And Maintenance Manual

Ventilation Override Module

(VOM - Optional 1U51)
Important: The ventilation override system should not
be used to signal the presence of smoke
caused by a fire as it is not intended nor
designed to do so.
The Ventilation Override module initiates specified
functions such as; space pressurization, exhaust, purge,
purge with duct pressure control, and unit off when any
one of the five (5) binary inputs to the module are
activated.The compressors and condenser fans are
disabled during the ventilation operation. If more than one
ventilation sequence is activated, the one with the highest
priority is initiated.

Variable Speed Module

(VSM - Optional 1U123)
The Variable Speed module used in eFlex variable speed
units provides a 0-10VDC output analog speed signal to
control the compressor VFD.
signal (VDC) and corresponding compressor speed (RPM)
at 0%, 50% and 100% Intellipak command speeds (Spd %):
Table 3. VSM output signal (VDC)
Spd 0%
Variable
speed unit
VDC RPM
40T 0 1500
50T 0 1500
55T 0 1500
60T 0 1500
70T 0 1500
Note: voltages and speed +/- 1%
During Auto Run mode, the Intellipak command speed
(Spd %) can be monitored at the HI.The 0-10VDC signal
and compressor RPM is displayed on theTRV200 inverter
keypad (1U128).
Figure 1. Display - TRV200 inverter keypad (1U128)
0-10VDC
signal
The VSM output signal can also be checked in ServiceTest
mode. Compressor relays should be commanded off as
shown in Figure 2, and the Spd% command can be
changed at the HI.Then check the VSM output signal
RT-SVX36K-EN
Table 3 lists VSM output
Spd 50% Spd 100%
VDC RPM VDC RPM
4.7 3632 9.5 5762
3.9 3271 7.9 5042
3.9 3271 7.9 5042
4.8 3660 9.6 5820
4.8 3660 9.6 5820
against Table 3. VSM output signal voltage is measured
between terminals 53 and 55 at the VFD (3U119) input.
Figure 2. VSM output signal

Interprocessor Communications Board

(IPCB - Optional 1U55 used with the Optional
Remote Human Interface)
The Interprocessor Communication Board expands
communications from the rooftop unit UCM network to a
Remote Human Interface Panel. DIP switch settings on the
IPCB module for this application should be; Switches 1 and
2 "Off" , Switch 3 "On" .
LonTalk/BACnet Communication Interface
Module
(LCI/BCI - Optional 1U54/1U104 - used on
units with Trane ICS™ or 3rd party Building
Automation Systems)
The LonTalk or BACnet Communication Interface modules
expand communications from the unit UCM network to a
TraneTracer Summit or a 3rd party building automation
system and allow external setpoint and configuration
adjustment and monitoring of status and diagnostics.

Exhaust/Comparative Enthalpy Module

(ECEM - Optional 1U52 used on units with
Statitrac and/or comparative enthalpy
options)
The Exhaust/Comparative Enthalpy module receives
information from the return air humidity sensor, the
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
to Figure 4, p. 14 for the Humidity vs. Current input values.
General Information
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