75
RT-PRC005-EN
Mechanical
Specifications
Supply and/or Return Air Smoke
Detector
— With this option factory-
installed, if smoke is detected, all unit
operation will be shut down. Reset will
be manual at the unit. Return Air Smoke
Detectors require minimum allowable
airflow when used with certain models.
See the Installation, Operation, and
Maintenance (IOM) manual for the
models affected and the minimum
allowable airflow required. This option is
available for microprocessor controlled
units.
Black Epoxy Coated Condenser Coil
—
The coil provides corrosion protection to
condenser coils for seacoast application.
The protection is a factory-applied
thermoset vinyl coating, bonded to
normal aluminum fin stock. The uniform
thickness of the bonded vinyl layer
exhibits excellent corrosion protection in
salt spray tests performed in accordance
with ASTM B117.
Dehumidification Option
— The
dehumidification (hot gas reheat) option
shall be a factory-installed option that
provides increased dehumidification. The
option shall consist of a hot-gas reheat
coil located on the leaving air side of the
evaporator coil prepiped and circuited.
The option shall be equipped with
crankcase heater(s), low pressure
switch(es), Frostat™, and a thermostatic
expansion valve(s) (TXV) as standard.
Control Options
Trane Communication Interface
— This
factory or field-installed option shall be
provided to interface microprocessor
controlled units with the Trane Integrated
Comfort
TM
systems.
LonTalk® Communication Interface
—
This factory or field-installed option shall
be provided to allow the unit to
communicate as a Tracer™LCI-R device
or directly with generic LonTalk Network
Building Automation System Controls.
Zone Sensor
— This field-installed
control shall be provided to interface
with the Micro equipped units and shall
be available in either manual, automatic
programmable with night setback, with
system malfunction lights, or remote
sensor options.
Thermostat
— Two stage heating and
cooling operation or one stage heating
and cooling shall be available, for field
installation, in either manual or
automatic changeover. Automatic
programmable electronic with night set
back shall also be available.
Differential Pressure Switches
— These
factory or field-installed sensors allow
individual fan failure and dirty filter
indication for microprocessor controlled
units. 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.
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 shall be available
for microprocessor controlled units. It
can be field-installed, or factory-installed
with the factory-installed economizer.
Differential Enthalpy
— 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
shall be available for microprocessor
controlled units. It can be field-installed,
or factory-installed with the factory-
installed economizer.
Low Ambient Cooling
— All
microprocessor units shall have cooling
capabilities down to 0°F as standard.
Electromechanical models have cooling
capabilites to 40°F as built, or to 0°F by
adding the optional low ambient (frostat)
control.
Thermal Expansion Valve
— All units
shall have a short orifice refrigerate
control metering device. For more exact
refrigerant flow, when using unit in low
airflow applications, a Thermal
Expansion Valve option shall be
available.
Novar Unit Controls
— Optional Novar
rooftop unit controls shall be factory
installed and tested. The Novar
electronic thermostat module will
interface to the unit microprocesser and
will control the unit to the desired stage
of cooling or heating.
Novar Return Air Sensor
— This option,
when used in conjunction with Novar
Controls, will contain a factory provided
and wired zone temperature snesor
located in the return air stream.
CO2 Sensing
— The CO2 sensor shall
have the ability to to monitor space
occupancy levels within the building by
measuring the parts per million of CO2
(Carbon Dioxide) in the air. As the CO2
levels increase, the outside air damper
modulates to meet the CO2 space
ventilation requirements. The CO2
accessory shall be available as field
installed.
Ventilation Override Accessory
—With
the Ventilation Override Accessory
installed, the unit can be set to transition
to up to 3 different pre-programmed
sequences for Smoke Purge,
Pressurization, and Exhaust. The
transition occurs when a binary input on
the RTOM is closed (shorted). This would
typically be a hard wired relay output
from a smoke detector of fire control
panel. The ventilation override accessory
shall be available as field installed.
Humidity Sensor (BAYSENS036)
—Field
installed, wall-mounted humidity sensor
is used to control activation of the hot
gas reheat dehumidification option. The
humidity sensor can be set for humidity
levels between 40% and 60% relative
humidity by adjusting the ReliaTel
Options Module.
Humidity Sensor (BAYSENS037)
—Field
installed, duct-mounted humidity sensor
is used to control activation of the hot
gas reheat dehumidification option. The
humidity sensor can be set for humidity
levels between 40% and 60% relative
humidity by adjusting the ReliaTel
Options Module.
