DATE:
DESCRIPTION:
"DPV" SERIES VERTICAL INDOOR SYSTEM
GENERAL MECHANICAL SPECIFICATIONS
GENERAL
All models 5-15 tons ship as factory-charged unitized packages. The 20 ton model shall be shipped as
separate evaporator and condensing unit modules (nitrogen holding charge only). All units may be field
split and installed as separate modules to suit on-site requirements. All packages are designed for free-
standing mounting on the floor, or on a field fabricated structural steel stand. The 5, 8, and 10 ton models
are shipped with vertical evaporator fan discharge as standard. The 12, 15, and 20 ton models are
shipped horizontal discharge as standard.
CABINET
All cabinets are completely constructed of heavy gauge galvanized steel. The entire unit interior ( both
evaporator and condensing section ) is insulated with 1/2" thick, 2 lb. density insulation. Service panels
are equipped with lifting handles for ease of removal and handling. Duct flanges for condenser discharge,
condenser intake, and evaporator discharges, are provided with the unit for field installation. Duct flange
on evaporator return is incorporated into the filter frame.
COMPRESSORS
All models utilize "Scroll" type hermetic compressors. Compressors are mounted on rubber isolators to
minimize vibration transmission. Internal overload protection is provided. External high pressure and low
pressure cutout switches are included in each compressor control circuit. Crankcase heaters are
standard on all models.
REFRIGERANT CIRCUITS
The 5 ton units have a single refrigeration circuit. The 8-20 ton units feature two independent refrigeration
circuits. Each refrigeration circuit includes an adjustable thermal expansion valve (with external
equalizer), liquid line filter drier, sight glass/moisture indicator, and service gauge ports.
EVAPORATOR AND CONDENSER COILS
The evaporator and condenser coils are constructed of internally enhanced copper tubes mechanically
bonded to rippled aluminum plate fins. Both coils are employed in a draw-thru configuration. Large
evaporator coil face area minimizes potential water blow-off.
INDOOR/OUTDOOR FANS
Forward curved, double inlet and double width centrifugal blowers are used for both evaporator and
condenser air movement. Blower wheels are fabricated of galvanized steel. Blowers employ solid steel
shafts, supported in permanently lubricated ball bearing. All blowers are belt driven. Variable-pitch motor
sheaves allow for field adjustment of blower rpm.
ELECTRICAL/CONTROLS
All units are completely factory wired with all necessary controls. Manual reset protection is provided on
both evaporator and condenser motors. A manual reset circuit is also provided on each compressor
control circuit in the event of high/low pressure cutout. A 24 volt control circuit, with oversize transformer,
is provided for field connection.
FILTERS
All models are shipped with 2-inch thick medium-efficiency throwaway filters factory installed. Filter rack
is external to the cabinet (shipped loose).
Johnson Controls maintains a continuous product improvement policy, therefore specifications are subject to change without notice.
March 2008
MECHANICAL SPECIFICATIONS
DPV144 VERTICAL UNIT
AIR-COOLED SELF-CONTAINED
Form YK145.12-PA6 (308)
2 of 4
Page 11
