York D2CE Technical Manual
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® SINGLE PACKAGEGAS / ELECTRIC UNITS ANDSINGLE PACKAGE AIR CONDITIONERSD2CE / D2CG 300 CONSTANT VOLUME25 NOMINAL TONS8.5 EERSUNLINE 2000 ™036-21359-001-B-0302FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALEDESCRIPTIONSunline™ 2000 series convertible package rooftop mod-els have two independent refrigerant circuits for efficientpart load operation. Although the units are primarilydesigned for curb mounting on a roof, they can also beslab-mounted at ground level or set on steel beams abovea finished roof.Cooling only, cooling with gas heat and cooling with electricheat models are available with a wide variety of factory-mounted options and field-installed accessories to makethem suitable for almost every application.All units are self-contained and assembled on full perimeterbase rails with holes in the four corners for overheadrigging.Every unit is completely piped, wired, charged and testedat the factory to simplify field installation and to provideyears of dependable operation. Powder paint cabinets pro-vide an exceptionally durable finish with the 750 hour saltspray process per ASTM-B117 test standard.All models (including those with an economizer) are suit-able for either bottom or horizontal duct connections. Mod-els with power exhaust are suitable for bottom ductconnections only. For bottom duct, you remove the sheetmetal panels from the supply and return air openingsthrough the base of the unit. For horizontal duct, youreplace the supply and return air panels on the rear of theunit with a side duct flange accessory.All models are available with five different outdoor airdamper options:• Single enthalpy economizer• Differential (dual) enthalpy economizer• Single enthalpy economizer with power exhaust• Differential (dual) enthalpy economizer withpower exhaust• Motorized outdoor air damperA fixed outdoor air intake assembly is shipped in the returnair compartment of all units ordered without an economizeror motorized outdoor air damper option. The assemblyincludes a rain hood with a damper that can be set for 10,15 or 25% outdoor air. With bottom duct connections, theintake damper assembly should be mounted over theopening in the return air panel. With horizontal ductwork, itshould be mounted on the return air duct.Technical Guide |
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