York SUNLINE MAGNADRY WR240 Technical Manual

Also see for SUNLINE MAGNADRY WR 180: Technical guide Installation manual

Contents

York SUNLINE MAGNADRY WR240 Technical Manual Manual pdf 9 page image

262292-YTG-B-0107Unitary Products Group 9struction mode operation, 365-day real time clock with 7day programming plus holiday scheduling is built-in. Twodifferent modes of demand ventilation are achievedthrough the INTELLI-Comfort™ using CO 2 sensors. Ituses an inside CO2 sensor to perform Demand Ventila-tion. It can also use an Outside CO2 sensor to perform Dif-ferential Demand Ventilation. It uses a Patented ComfortVentilation algorithm to provide comfortable ventilation airtemperature. The patented economizer-loading algorithmwill protect the equipment when harsh operating condi-tions exist. Humidity in the occupied space or return ductcan be monitored and controlled via humidity sensors andthe on-board connection for hot gas re-heat system. Ituses the INTELLI-Start™ algorithm to maximize energysavings by recovering the building from the UnoccupiedSetpoints to the Occupied Setpoints just in time for theOccupied Time Period to begin. The Simplicity® INTELLI-Comfort™ balances space temperature, ventilation airtemperature, CO2 and humidity for ultimate comfort.Simplicity® INTELLI-Comfort™ with ModLINC CON-TROL - The York® Simplicity® INTELLI-Comfort™ withModLINC control is factory installed. It includes all the fea-tures of the INTELLI-Comfort™ control with an additionalcontrol to translate communications from MODBUS to theBACnet MSTP protocol.Novar® BAS CONTROL - The Novar® ETC-3 buildingautomation system controller is factory installed. Includessupply air sensor, return air sensor, dirty filter indicatorswitch, and air proving switch.JOHNSON CONTROLS BAS CONTROL - The JohnsonControl YK-UNT-1126 building automation system control-ler is factory installed. Includes supply air sensor, returnair sensor, dirty filter indicator switch, and air provingswitch.CPC BAS CONTROL - The Computer Process ControlsModel 810-3060 ARTC Advanced Rooftop building auto-mation system controller is factory installed. Includes sup-ply air sensor, return air sensor, dirty filter indicator switchand air proving switch.HONEYWELL BAS CONTROL - The Honeywell W7750Cbuilding automation system controller is factory installed.Includes air supply sensor, return air sensor, dirty filterindicator switch, and air proving switch.• COIL GUARD - Customers can purchase a coil guard kitto protect the condenser coil from damage. This is not ahail guard kit.• 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.• STAINLESS STEEL HEAT EXCHANGER - Forapplications in corrosive environments, this optionprovides a full stainless steel heat exchanger assembly.• STAINLESS STEEL DRAIN PAN - An optional rust-proofstainless steel drain pan is available to provide years oftrouble-free operation in corrosive environments.• PHASE MONITORS - Designed to prevent unit damage.The phase monitor will shut the unit down in an out-of-phase condition.• HIGH SPEED DRIVE - May include a belt, blower pulley,motor pulley or a motor change to enhance blowerperformance.• DIRTY FILTER SWITCH - This kit includes a differentialpressure switch that energizes the fault light on the unitthermostat, indicating that there is an abnormally highpressure drop across the filters. Factory installed option orfield installed accessory.• HINGED FILTER DOOR/”TOOLLESS” BLOWER ANDACCESS PANELS (not hinged) - This option allows foreasy access and maintenance.NOTE: Knobs are shipped separately within the unit toprevent shipping damage. These must be fieldinstalled for toolless operation.• LOW SPEED DRIVE - Includes a motor change whenhigh airflow is not required. (WR300 & WR240 only)FIELD-INSTALLED ACCESSORIES• SINGLE INPUT ELECTRONIC ENTHALPYECONOMIZERS - Includes a slide-in / plug-in damperassembly with fully modulating spring-return motoractuator capable of introducing up to 100% outdoor airwith nominal 1% 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 tosome pre-set position whenever the supply air blower isoperating and will drive fully closed when the blower unitshuts down.The rain hood is painted to match the basic unit and mustbe field-assembled before installing.Factory installed smoke detectors in the return air,may be subjected to freezing temperatures during“off” times due to out side air infiltration. these smokedetectors have an operational limit of 32°F to 131°F.smoke detectors installed in areas that could be outside those limitations will have to be moved to preventhaving false alarms.