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PKGP-PRC004-EN
49
Mechanical
Specifications
Control Options
COMM3/4 Trane Communications
Interface — An option for a factory or
field-installed Trane Communication
Interface is available to allow twisted
wire pair communication with an
Integrated Comfort
™
system.
Comm-5 LonTalk Communication
Interface — This factory or field-installed
option shall be provided to allow the unit
to communicate as a Trane Comm-5
device or directly with generic LonTalk
Network Building Automation System
Controls.
Zone Sensors — This field-installed
option shall be provided to interface with
the micro equipped Precedent and shall
be available in either manual, automatic,
programmable with night setback, with
system malfunction lights or remote
sensor options.
Differential Pressure Switches — These
factory or field-installed options allow for
individual fan failure and dirty filter
indication. The fan failure switch will
disable all unit functions and “ flash” the
Service LED on the zone sensor. The
dirty filter switch will light the Service
LED on the zone sensor and will allow
continued unit operation.
Reference Enthalpy Control — Replaces
the dry bulb control with a wet bulb
changeover controller which has a fully
adjustable set point. Enthalpy control
offers a higher level of comfort control,
along with energy savings potential,
than the standard dry bulb control. This
is due to the additional wet bulb sensing
capability. This option can be field-
installed or factory-installed with the
factory-installed economizer.
Differential Enthalpy Control — Replaces
the standard dry bulb control with two
enthalpy sensors that compare total heat
content of the indoor air and outdoor air
to determine the most efficient air
source. This control option offers the
highest level of comfort control, plus
energy efficiency, available. This option
can be field-installed or factory-installed
with the factory-installed economizer.