036-21187-001 REV A (0301)
Unitary Products Group
3
GENERAL MECHANICAL SPECIFICATIONS
GENERAL - All 2 to 10 ton models ship with a full refrigerant
charge. The 12 and 15 ton models are shipped as separate
evaporator and condensing unit modules (nitrogen holding
charge only). The 4 through 10 ton units include refrigeration
line shut-off valves to allow the units to be field split. All pack-
ages/models are designed for suspended mounting via inte-
gral structural channels.
CABINET - All cabinets are completely constructed of 18
Gauge corrosion resistant "Galvalume" coated 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 1/2" thick 2 lb. density insulation.
Service panels are equipped with lifting handles for ease of
removal and handling.
COMPRESSORS - All models utilize "Scroll" type hermetic
compressors. Compressors are mounted on rubber isolators
to minimize vibration transmission. Internal overload protec-
tion is provided. External high pressure and low pressure cut-
out switches are included in each compressor control circuit.
Crankcase heaters are standard on all models.
REFRIGERANT CIRCUIT - The 2 to 5 tons units use a single
refrigeration circuit. The 8 to 15 ton units feature two indepen-
dent refrigeration circuits. Each 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-through configuration.
Large evaporator coil face area minimizes potential water
blow-off (max face velocity is 550 fpm at rated airflow).
INDOOR/OUTDOOR FANS - Forward curved, double inlet
and double width centrifugal blowers are used for both evap-
orator and condenser air movement. blow wheels are fabri-
cated of galvanized steel. Blowers employ solid steel shafts,
supported in permanently lubricated ball bearing. All blow-
ers are belt driven 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 man-
ual reset circuit is also provided on each compressor control
circuit in the event of high/low pressure cutout. A 24 volt con-
trol circuit with oversize transformer, is provided for field con-
nection.
FILTERS - All models are shipped with 2 inch thick medium-
efficiency throwaway filters factory installed. Filter rack is
internal to the cabinet.
FACTORY INSTALLED ACCESSORIES
OVERSIZED EVAPORATOR FAN MOTORS - Increased
horsepower motors and drive components are available for
those applications where external static pressure require-
ments exceed the capability of the standard motor.
PRODUCT NOMENCLATURE
D
3
H
H
0
6
0
A
4
6
PRODUCT CATEGORY
VOLTAGE CODE
D = Single Package Air
Conditioner
(Air Cooled)
NOMINAL
COOLING
CAPACITY (MBH)
06 = 208/230-1-60
25 = 208/230-3-60
46 = 460-3-60
58 = 575-3-60
024 = 24,000 BTUH
036 = 36,000BTUH
048 = 48,000BTUH
060 = 60,000BTUH
096 = 96,000BTUH
120=120,000BTUH
144=144,000BTUH
180 = 080,000 BTUH
PRODUCT GENERATION
FACTORY INSTALLED
ELECTRIC HEAT
Number = Generation
A = No Electric Heat Installed
PRODUCT IDENTIFIER
SK = Vertical Indoor Packaged Unit
HH = Horizontal Indoor Packaged
Unit
Summary of Contents for D3HH 024
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