York DY 048 Technical Manual

Also see for DY 036: Technical guide

York DY 048 Technical Manual Manual pdf 6 page image

343615-YTG-B-03086 Johnson Controls Unitary ProductsFACTORY-INSTALLED OPTIONS• SINGLE INPUT ELECTRONIC ENTHALPY ECONO-MIZERS - Includes a slide-in / plug-in damper assemblywith fully modulating spring-return motor actuator capa-ble of introducing up to 100% outdoor air with nominal1% leakage type dampers.The enthalpy system contains one sensor that monitorsthe outdoor air and determines when the air is coolenough and dry enough to provide free cooling.The rainhood is painted to match the basic unit and mustbe 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 apre-set position whenever the supply air blower is oper-ating and will drive fully closed when the blower unitshuts down.The rain hood is painted to match the basic unit andmust be field assembled before installing.• PHENOLIC COATED EVAPORATOR AND CON-DENSER COILS - Special coating process that utilizesTechnicoat 10-1TM processes. Coating is applied by totalimmersion of the complete coil for maximum protection.• ELECTRIC HEATERS - Wired for single point powersupply. These nickel chromium heater elements are pro-vided with limit and automatic reset capability to preventoperation at excessive temperatures.• FILTER OPTIONS - Standard units are shipped with 1”throw-away filters installed. 2” pleated filters are offeredas a factory installed option.• CONVENIENCE OUTLET - This 110 volt outlet can be“powered” by the unit with a stepdown transformer or theunit may be ordered with a “non-powered” convenienceoutlet that can be wired in the field.• DISCONNECT SWITCH - For gas heat units and coolingunits with electric heat, a HACR breaker sized to the unitis provided. For cooling only units, a switch sized to thelargest electric heat available for the particular unit isprovided. Factory installed option only.• BAS - Building Automation System ControlsSimplicity® INTELLI-Comfort™ CONTROL - The York®Simplicity® INTELLI-Comfort™ control is factoryinstalled. It includes a supply air sensor, a return air sen-sor, and an outside air sensor. There are provisions for afield installed dirty filter indicator switch, an air-provingswitch, an Outside Air Humidity sensor, a Return AirHumidity sensor, an Inside IAQ sensor, and an OutsideAir IAQ sensor. Construction mode operation, 365-dayreal time clock with 7 day programming plus holidayscheduling is built-in. Two different modes of demandventilation are achieved through the INTELLI-Comfort™using CO2 sensors. It uses an inside CO2 sensor to per-form Demand Ventilation. It can also use an OutsideCO2 sensor to perform Differential Demand Ventilation.It uses a Patented Comfort Ventilation algorithm to pro-vide comfortable ventilation air temperature. The pat-ented economizer-loading algorithm will protect theequipment when harsh operating conditions exist.Humidity in the occupied space or return duct can bemonitored and controlled via humidity sensors and theon-board connection for hot gas re-heat system. It usesthe INTELLI-Start™ algorithm to maximize energy sav-ings by recovering the building from the Unoccupied Set-points to the Occupied Setpoints just in time for theOccupied Time Period to begin. The Simplicity®INTELLI-Comfort™ balances space temperature, venti-lation air temperature, CO2 and humidity for ultimatecomfort.• Simplicity® INTELLI-Comfort™ with MOD LINK CON-TROL - The York® Simplicity® INTELLI-Comfort™ withMod Link control is factory installed. It includes all thefeatures of the INTELLI-Comfort™ control with an addi-tional control to translate communications from MOD-BUS to the BACnet MSTP protocol.• Novar® BAS CONTROL - The Novar® ETC-3 buildingautomation system controller is factory installed.Includes supply air sensor, return air sensor, dirty filterindicator switch, and air proving switch.• JOHNSON CONTROLS BAS CONTROL - The JohnsonControl YK-UNT-1126 building automation system con-troller is factory installed. Includes supply air sensor,return air sensor, dirty filter indicator switch, and air prov-ing switch.• CPC BAS CONTROL - The Computer Process ControlsModel 810-3060 ARTC Advanced Rooftop building auto-mation system controller is factory installed. Includessupply air sensor, return air sensor, dirty filter indicatorswitch and air proving switch.• HONEYWELL BAS CONTROL - The HoneywellW7750C building automation system controller is factoryinstalled. Includes air supply sensor, return air sensor,dirty filter indicator switch, and air proving switch.• SMOKE DETECTORS - (supply air & return air) Thesmoke detectors stop operation of the unit by interruptingpower to the control board if smoke is detected within theair compartment.• COIL GUARD - Customers can purchase a coil guard kitto protect the condenser coil from damage. This is not ahail guard kit.