York AFFINITY R-410A DNX Technical Manual

Also see for AFFINITY DNX Series: Technical guide Technical guide

Contents

York AFFINITY R-410A DNX Technical Manual Manual pdf 5 page image

333491-YTG-C-1108Johnson Controls Unitary Products 5between the mechanical cooling and economizeroperation. Independent blade design insures propercontrol and less than 1% leak rate. Includes hood andmesh bird screen filter integrated into the hood, dry bulbsensor and relief damper. Separate field accessories ofsingle enthalpy and dual enthalpy are also available. Abuilt-in barometric relief of 25% is provided.• Single Enthalpy Sensor - Sensor replaces dry bulbsensor standard in economizer kit. Provides improvedeconomizer operation by sensing the dry bulbtemperature from outdoors plus the enthalpy content ofthe outdoor air.• Dual Enthalpy Sensor - Additional sensor to singleenthalpy sensor. Sensor senses both the return airtemperature dry bulb and humidity in conjunction with thesingle enthalpy to determine the most economical mix.Single Enthalpy sensor also required.• Hail Guard Kit - Kit contains protective grilles made ofexpanded aluminum with full perimeter frame. Slopedhoods are also included to assure maximum protection.• Anti Short Cycle Timer (DNZ Units Only) - Automaticallyprevents the compressor from restarting for 5 minutes aftercycled off.Not required if Thermostat 2ET07700224 and2ET04700224 are used. Standard in all DNX and DNYunits.• Filter/Frame Kit (Single Phase Only) - Kit contains thenecessary hardware to field install return air filters into thebase unit. Pre-cut filter racks and appropriate cleanablestandard size filters are shipped in one kit. The filter rackis suitable for either 1" or 2" filters. (1" filter is supplied)This kit is available for single phase horizontal or verticalduct application only. Standard in all 3 Phase models.• Motorized Fresh Air Damper - Designed for ductmounted side supply/return and unit mounted downsupply/return applications. Damper capable of providing0% through 50% of outdoor air (field supplied). Closes onpower loss, includes hood and screen assembly.• Rectangle To Round Adapters - Kit includes one supplyand one return air rectangle to round duct adapter.Adapters are preformed and designed to fit over currentduct openings on the base unit. Transition is from sidesquare duct opening to 14" round duct opening.• Roof Curbs - NRCA approved curbs provide proper fit tobase unit for rooftop installations. Curbs are designed tobe assembled through hinge pins in each corner. Kit alsoprovides seal strip to assure a water tight seal. 8 and 14inch high roof curbs are available.• Manual Outdoor Damper - Provides 0% through 50%outdoor air capability (field adjustable). Designed for ductmounted side supply/return applications. Includes hoodand screen assembly.• Wall Thermostat - The units are designed to operate with24-volt electronic and electro-mechanical thermostats. Allunits can operate with single stage heat/single stage coolthermostats - with or without the economizer.• Low Ambient Kit - Kit provides necessary hardware toconvert unit to operate in cooling cycle down to 0º F.Standard unit operation 45º F.• Transformer Kit - Kit provides necessary hardware toprovide single phase models from factory furnished 40 VAtransformer capability to 75 VA transformer capability.(Required on installations with economizer or motorizeddamper.)Guide SpecificationsGeneralUnits shall be manufactured by Unitary Products in an ISO9001 certified facility. YORK’s Affinity™ package units give youthe flexibility and choices you need in today’s market. Thesepackaged cooling/heating air conditioners are designed foroutdoor installation. Only utility and duct connections arerequired at the point of installation. The single or two stage gasfired heaters have aluminized steel tubular heat exchangersand spark to pilot ignition. They are available in natural gas withfield conversion to propane.DescriptionUnits shall be factory-assembled, single packaged, ElectricCooling/Gas Heating units, designed for outdoor mountedinstallation. For SEER ratings, refer to technical literature. Theyshall have built in, equal size, field convertible duct connectionsfor down discharge supply/return or horizontal dischargesupply/return. The units shall be factory wired, piped, chargedwith R-410A Refrigerant and factory tested prior to shipment. Allunit wiring shall be both numbered and color coded. All unitsshall be manufactured in a facility certified to ISO 9001standards, and the cooling performance shall be rated inaccordance with DOE and ARI test procedures. The heatingperformance shall be rated to DOE and GAMA test procedures.Units shall be CSA listed and classified to ANSI Z21.47/CAN/CSA 2.3 standards and UL 1995/CAN/CSA No. 236-M90conditions.Unit CabinetUnit cabinet shall be constructed of galvanized steel, withexterior surfaces coated with a non-chalking, powdered paintfinish, certified at 1000 hours salt spray test per ASTM-B117standards. The unit top shall be a single piece “Water Shed”design, with drip edges and no-seam corners to provideoptimum water integrity. Unit shall have a rigidly mountedcondenser coil guard to provide protection from objects andpersonnel after installation. Indoor blower section shall beinsulated with up to 3/4” thick, aluminum, foil faced insulation,fastened to prevent insulation from entering the air stream.Cabinet panels shall be “large” size, easily removable forservicing and maintenance, with built-in lift handles. Unit shallbe built on a formed, “Super-Structure” design base pan, withembossments at critical points to add strength, rigidity and aidin minimizing sound. Full perimeter base rails shall be providedto assure reliable transit of equipment, overhead rigging, fortruck access and proper sealing on roof curb applications. Base