Factory-installed options

Alternate fan motors and drives are available to pro- vide the widest possible range of perfomance.

Field-installed accessories

Two-row hot water coils have copper tubes mechani- cally bonded to aluminum plate fins and non-ferrous headers.

One-row steam coil has copper tubes and aluminum fins. The Inner Distributing Tube (IDT) design provides unifor m temperatures acrossthe coil face.The steam coil hasa broad operating pressure range; up to 175 psig (1207 kPag) at400 F (204.4 C) and up to 300 psig (2069 kPag)at 300 F (148.9 C). The IDT steam coils are especiallysuited to ap-plications where sub-freezingair enters the unit.

Electric r esistance heat coils have an open-wire design and are mounted in a rigid frame. Safety cutouts for high temperature conditions are standard. Terminal block for single-point power connection is included.

Economizer (enthalpy contr olled) provides ventilation air and ``free'' cooling if outside ambient temperature and humidity are suitable. Can also be used with CO2 sensors to help meet indoor air quality requirements.

Discharge plenum directs the air discharge directly into the occupied space; integral horizontal and vertical louvers enable redirection of airflow. Accessory is available un- painted or painted. Field assembly required.

Standard units available from the factory are in Double skin.

Return-air grille provides a protective barrier over thereturn-air opening and givesa finished appearanceto unitsinstalled in the occupied space. Accessoryis availableunpaintedor painted.

Subbase provides a stable, raised platform and room forcondensatedrain trap connection for verticalfloor-mountedunits. Accessoryis availableunpainted or painted.

Over head suspension package includes necessarybracketsto support units in horizontal ceiling installations.

CO2 sensors can be used in conjunction with the economizeraccessory to help meet indoor air quality requirements.The sensor signals the economizer to open whenthe CO2 level in the space exceeds the set point. A CarrierComfort System programmable thermostat can be used tooverride the sensor if the outside air temperatureis too high or too low.

Carrier's line of thermostats provide both programmableand non-programmable capability with the newDebonair line of commercial programmable thermostats,the TEMP System controls offer communication capabilitywith staged heating and cooling, the Commercial Electronicthermostats provide 7-day programmablecapabilityfor economicalapplications,while the Non-Programmablethermostatsoffer a multitude of stagedheating and coolingsubbaseoptions.

Condensate drain trap includes an overflow shutoff switch that can be wired to turn off the unit if the trap becomes plugged. Kit also includes a wire harnessthat can be connectedto an alarm if desired. The transparent trap is designedfor easy service and maintenance.