MECHANICAL SPECIFICATIONS
SINGLE PACKAGE AIR COOLED GAS/ELECTRIC UNITS FOR 12.5 NOMINAL TONS
PREDATOR® MAGNUM - DJ 150
11.35 EER
GENERAL
Units shall be manufactured by York International Unitary Products Group in an ISO 9001 certified facility. YORK® Predator® Magnum units are convertible single packages with a common footprint cabinet and common roof curb for all
with independent refrigeration circuits to provide 2 stages of cooling. The units were designed for light commercial appli- cations and can be easily installed on a roof curb, slab, or frame. All Predator® units are
DESCRIPTION
Units shall be factory assembled, single package, (Elec/Elec, Gas/Elec), designed for outdoor installation. Units shall have a minimum EER of 11.35. They shall have built in field con- vertible duct connections for down discharge supply/return or horizontal discharge supply/return and be available with fac- tory installed options or field installed accessories. The units shall be factory wired, piped and charged with
UNIT CABINET
Unit cabinet shall be constructed of G90 galvanized steel with exterior surfaces coated with a
evaporator fan performance without removing panels or cre- ating bypass of the coils. Condensate pan shall be slide out design, constructed of a non corrosive material, internally sloped and conforming to ASHRAE
INDOOR (EVAPORATOR) FAN ASSEMBLY
Fan shall be a belt drive assembly and include an adjustable pitch motor pulley. Job site selected brake horsepower shall not exceed the motors nameplate horsepower rating plus the service factor. Units shall be designed to operate within the service factor. Fan wheel shall be double inlet type with for- ward curve blades, dynamically balanced to operate smoothly throughout the entire range of operation. Airflow design shall be constant volume. Bearings shall be sealed and permanently lubricated for longer life and no maintenance. Entire blower assembly and motor shall be slide out design.
OUTDOOR (CONDENSER) FAN ASSEMBLY
The outdoor fans shall be of the direct drive type, discharge air vertically, have aluminum blades riveted to corrosion resistant steel spider brackets and shall be dynamically bal- anced for smooth operation. The outdoor fan motors shall have permanently lubricated bearings internally protected against overload conditions and staged independently. A cleaning window shall be provided on two sides of the units for coil cleaning.
REFRIGERANT COMPONENTS
Compressors:
a.Shall be scroll type, direct drive, internally protected with internal
b.Shall have internal spring isolation and sound muffling to minimize vibration and noise, and be externally isolated on a dedicated, independent mounting.
Coils:
a.Evaporator and condenser coils shall have aluminum plate fins mechanically bonded to seamless internally enhanced copper tubes with all joints brazed. Special Phenolic coating shall be available as a factory option.
b.Evaporator and condenser coils shall be of the direct expansion,
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