outdoor and return air damper assembly to prevent the supply air temperature from dropping below 55 ºF. Changeover from compressor to economizer operation shall be provided by an integral electronic enthalpy con- trol that feeds input into the basic module. The outdoor intake opening shall be covered with a rain hood that matches the exterior of the unit. Water eliminator/filters shall be provided. Simultaneous economizer/compressor operation is also possible. Dampers shall fully close on power loss. Available with barometric relief or power exhaust.
2.MOTORIZED OUTDOOR AIR DAMPERS – Outdoor and return air dampers that are interlocked and posi- tioned by a
ADDITIONAL FACTORY INSTALLED OPTIONS
•ALTERNATE INDOOR BLOWER MOTOR – For appli- cations with high restrictions, units are available with optional indoor blower motors that provide higher static output and/or higher airflow.
•CONVENIENCE OUTLET
•ELECTRIC HEAT - Electric heaters range from 9 kW to 54 kW and are available in all the voltage options of the base unit.
•PHASE MONITOR - Designed to prevent damage in out-
•COIL GUARD - Designed to prevent condenser coil damage.
•BAS CONTROLS - Include supply air sensor, return air sensor, dirty filter indicator and air proving switch.
•DIRTY FILTER SWITCH – This kit includes a differential pressure switch that energizes the fault light on the unit thermostat, indicating that there is an abnormally high- pressure drop across the filters.
•BREAKER – An HACR breaker can be factory installed on gas heat units or cooling units with electric heat.
•DISCONNECT SWITCH - A disconnect can be factory installed on a cooling only units sized for the largest elec- tric heat available.
•STAINLESS STEEL HEAT EXCHANGER – For applica- tions in a corrosive environment, this option provides a full stainless steel heat exchanger assembly.
•STAINLESS STEEL DRAIN PAN – Provides years of
•SMOKE DETECTOR – A smoke detector can be factory mounted and wired in the supply and/or return air com- partments.
OTHER PRE-ENGINEERED ACCESSORIES AVAILABLE
•ROOF CURB - 14” and 8” high, full perimeter knockdown curb, with hinged design for quick assembly.
•BAROMETRIC RELIEF DAMPER – (Unit mounted – Downflow, Duct Mounted – Horizontal) – Contains a rain hood, air inlet screen, exhaust damper and mounting hardware. Used to relieve internal air pressure through the unit during economizer operation.
•PROPANE CONVERSION KIT – Contains new orifices and gas valve springs to convert from natural to L.P. gas.
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•ECONOMIZER (Downflow and Horizontal flow)
•POWER EXHAUST – (Unit mount – Downflow, Duct mount – Horizontal flow)
•DUAL ENTHALPY KIT - Provides a second input to economizer to monitor return air.
Subject to change without notice. Printed in U.S.A. |
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Copyright © 2008 by Johnson Controls, Inc. All rights reserved. | Supersedes: |
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