York R-410A manual Guide Specifications, Field Installed Accessories

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savings by recovering the building from the Unoccupied Setpoints to the Occupied Setpoints just in time for the Occupied Time Period to begin. The Simplicity™ INTELLI-Comfort™ balances space temperature, ventilation air temperature, CO2 and humidity for ultimate comfort.

Simplicity™ INTELLI-Comfort™ with ModLINC Control - The York® Simplicity™ INTELLI-Comfort™ with ModLINC control is factory installed. It includes all the features of the INTELLI-Comfort™ control with an additional control to translate communications from MODBUS to the BACnet MSTP protocol.

Novar® BAS Control - The Novar® ETC-3 building automation system controller is factory installed. Incudes supply air sensor, return air sensor, dirty filter indicator switch, and air proving switch.

Johnson Controls BAS Control - The Johnson Control YK-UNT-1126 building automation system controller is factory installed. Includes supply air sensor, return air sensor, dirty filter indicator switch, and air proving switch.

CPC BAS Control - The Computer Process Controls Model 810-3060 ARTC Advanced Rooftop building automation system controller is factory installed. Includes supply air sensor, return air sensor, dirty filter indicator switch and air proving switch.

Honeywell BAS Control - The Honeywell W7750C building automation system controller is factory installed. Includes air supply sensor, return air sensor, dirty filter indicator switch, and air proving switch.

Field Installed Accessories

YORK® offers several equipment accessories for field installation, for the ZJ/ZR/ZF Series.

•Single Input Electronic Enthalpy Economizers - Includes a slide-in /plug-in damper assembly with fully modulating spring-return motor actuator capable of introducing up to 100% outdoor air with nominal 1% leakage type dampers.

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 field-assembled before installing.

•Motorized Outdoor Air Intake Damper - Includes a slide-in /plug-in damper assembly with a 2-position, spring return motor actuator which opens to some pre-set position whenever the supply air blower is operating and will drive fully closed when the blower unit shuts down.

The rain hood is painted to match the basic unit and must be field assembled before installing.

•Roof Curbs - Fourteen-inch high roof curbs provide a water-tight seal between the unit and the finished roof.

These full perimeter curbs meet the requirements of the National Roofing Contractors Association (NRCA) and are shipped knocked-down for field assembly.

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 altitudes up to 6,000 feet. This accessory supplements the basic propane conversion kit.

•Side Duct Flanges - One-inch flanges replace the supply and return air panels on the rear of the unit to accommodate horizontal duct connections. These flanges can also be used individually for bottom supply / horizontal return or horizontal supply/bottom return. They cannot be used on units with power exhaust.

•Barometric Relief Damper - This damper accessory 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 - May include a belt, blower pulley, motor pulley or a motor change to enhance blower performance.

•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 out-of phase condition.

Guide Specifications

General

Units shall be manufactured by York International Unitary Products Group in an ISO 9001 certified facility.

York's ZJ/ZR/ZF units are convertible single package units. All models have four independent refrigerant circuits for efficient part load operation and maximum comfort control. Although the units are primarily designed for curb mounting on a roof, they

8 Johnson Controls Unitary Products