York MagnaDRY Technical Manual

Contents

York MagnaDRY Technical Manual Manual pdf 3 page image

265485-XTG-B-1208Johnson Controls Unitary Products 3FEATURES• Standard Efficiency– All standard efficiency units havea minimum EER of 10.5 (3.08 CoP). Gas/electric unitshave electronic spark ignition and power vented combus-tion with steady state efficiencies of 80%.• Service Friendly – The Predator® incorporates a num-ber of enhancements which improve serviceability.The motor and blower slide out of the unit as a commonassembly. This facilitates greater access to all the indoorairflow components, thus simplifying maintenance andadjustment.Service time is reduced through the use of hinged, tool-less panels. Such panels provide access to frequentlyinspected components and areas, including the controlbox, compressors, filters, indoor motor & blower, and theheating section. The panels are screwed in place at thefactory to prevent access by children or other unauthor-ized persons. It is recommended that the panels besecured with screws once service is complete.Service windows have been placed in both condensersection walls. Rotation of the cover allows easy accessto the condenser coils for cleaning or inspection.Both the unit control board and ignition control board uti-lize flash codes to aid in diagnosis of unit malfunctions.Unique alarm codes quickly identify the source of theunit alarm.All units use the same standard filter size. This stan-dardization removes any confusion on which filter sizesare needed for replacement.The non-corrosive drain pan slides out of the unit to per-mit easy cleaning. The drain pan is accessed by remov-ing the drain pan cover plate on the rear of the unit.Once the plate is removed, the drain pan slides outthrough the rear of the unit.All Predator® units have a second model nameplatelocated inside the control access door. This is to preventdeterioration of the nameplate through weathering.• Environmentally Aware – For improved Indoor AirQuality, foil faced insulation is used exclusively through-out the units.• Balanced Heating – The Predator® offers “Ultimate Heat-ing Comfort” with a balance between 1st and 2nd stagegas heating. The 1st stage of a gas heat Predator® unitprovides 60% of the heating capacity. Balanced heatingallows the unit to better maintain desired temperatures.FIGURE 1 - PREDATOR® COMPONENT LOCATIONRoof curbs in eight- andfourteen-inch heights. Roofcurbs for transitioning fromYork Sunline™ footprint tothe DR Series footprints arealso available (field-installedaccessory)Base rails w/forkliftslots (three sides)and lifting holesCompressor #2access (high-efficiencycompressorw/crankcaseheater)Dual stagecooling formaximumcomfortSecond modelnameplateinside hingedaccess panelTerminal block forhi-voltage connectionSimplicity™ control boardw/screw connector for T-statwiring and network connectionsDisconnect location(optional disconnect switch)Filter access(2” throw-away)Filter drier(solid core)Condenser sectionSlide-out motor andblower assembly foreasy adjustmentand serviceBelt-driveblower motorPower ventor motor20-gauge alumi-nized steel tubularheat exchanger forlong life (stainlesssteel option)Two-stage gasheating to maintainwarm, comfortabletemperatureIntelligent controlboard for safe andefficient operationSlide-out drain panwith steel 3/4” NPT,female connectionCompressor #1 access(high-efficiency compressorw/crankcase heater)Toollessdoor latchSide entry powerand control wiringknockouts