FIELD-INSTALLED ACCESSORIES
•SINGLE INPUT ELECTRONIC ENTHALPY ECONO- MIZERS - Includes a
The enthalpy system contains one sensor that monitors the outdoor air and determines when the air is cool enough and dry enough to provide free cooling.
The rainhood is painted to match the basic unit and must be
•MOTORIZED OUTDOOR AIR INTAKE DAMPER - Includes a
The rain hood is painted to match the basic unit and must be field assembled before installing.
•ROOF CURBS -
They're designed to fit inside the base rails of the unit and include both a wood nailing strip and duct hanger supports.
•HIGH ALTITUDE NATURAL GAS - Burner orifices and pilot orifices are provided for proper furnace operation at altitudes up to 6,000 feet.
•PROPANE - Burner orifices, pilot orifices and gas valve parts are provided to convert a natural gas furnace to propane.
•HIGH ALTITUDE PROPANE - Burner orifices and pilot orifices are provided for proper furnace operation at alti- tudes up to 6,000 feet. This accessory supplements the basic propane conversion kit.
•SIDE DUCT FLANGES -
•BAROMETRIC RELIEF DAMPER - This damper acces- sory can be used to relieve internal building air pressure on units with an economizer without power exhaust. This accessory includes a rain hood, a bird screen and a fully assembled damper. With bottom duct connections, the damper should be mounted over the opening in the return air panel. With horizontal ductwork, the accessory should be mounted on the return air duct.
•HIGH STATIC DRIVE - A smaller blower pulley and a shorter belt increase the speed of the supply air blower for applications with a higher CFM and/or static pressure requirements.
•ENTHALPY ACCESSORY CONTROL KIT - This kit contains the required components to convert a single enthalpy economizer to dual enthalpy.
•BURGLAR BARS - Mount in the supply and return openings to prevent entry into the duct work.
•FLUE EXHAUST EXTENSION KIT - In locations with wind or weather conditions which may interfere with proper exhausting of furnace combustion products, this kit can be installed to prevent the flue exhaust from entering nearby fresh air intakes.
•WOOD SKID - Allows unit to be handled with 90” forks.
•CO2 SENSOR - Senses CO2 levels and automatically overrides the economizer when levels rise above the present limits.
•COIL GUARD - Customers can purchase a coil guard kit to protect the condenser coil from damage. This is not a hail guard kit.
•PHASE MONITORS - Designed to prevent unit damage. The phase monitor will shut the unit down in an
8 | Johnson Controls Unitary Products |