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 theTrane Integrated ComfortTM systems.
LonTalk® Communication Interface — This factory or field-installed option shall be provided to allow the unit to communicate as aTracer™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 ExpansionValve — All units shall have a short orifice refrigerate control metering device. For more exact refrigerant flow, when using unit in low airflow applications, aThermal ExpansionValve 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 theVentilation 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.
