6
% FULL LOAD CAPACITY CONTROL
MODEL NUMBER
ASQ045B - ASQ070B
ASQ080B- ASQ150B
ASQ160B - ASQ200B
ASQ220B - ASQ280B
ASQ300B - ASQ440B
100-50-OFF
100-75-63-50-25-OFF
100-83-66-50-33-16-OFF
100-87-75-63-50-37-25-12-OFF
100-92-83-75-66-58-50-42-33-25-16-8-OFF
NOTES:
1. All models have slider capacity control valve on all compressors.
2. HGBP = Hot gas bypass available on lead compressor for all models (option).
3. HGBP modulates to approximately 50% of its compressor lowest unloaded capacity.
SEMI-HERMETIC COMPACT TWIN SCREW COMPRESSORS
All compressors are compact semi-hermetic
twin screw
of the high capacity and efficiency due to its perfect profile form
ratio 5:6. Simple and robust construction with slider control valve for capacity unloading, suction/discharge shut-off valves,
check valve in discharge gas outlet, oil sight glass, oil fill/drain service valve, directly flanged-on three stage oil separator
with long-life fine filter 10 microns mesh size, robust axial bearings in tandem configuration, suction gas filter, internal
pressure relief valve and manual lock-out electronic protection system for thermal motor winding temperature, phase
reversal, discharge gas temperature protection controls
.
CONDENSER COILS
W-configuration condenser coils are corrugated fin and tube type, constructed of seamless 3/8" dia. & 0.014" (0.35 mm)
thick copper tubes, mechanically bonded to aluminum fins for maximum heat transfer efficiency.
As an option, copper
fins or acrylic coated aluminum fins or other coated coils may be provided.
The fins have full self spacing collars
which completely cover each tube. The staggered tube design improve the thermal efficiency. End plates support
sheets are 14 gauge galvanized steel, formed to provide structural strength. Each coil is pressure tested in the factory
at not less than 450 psi air pressure.
COMPACT DESIGN SHELL AND TUBE WATER COOLERS
The DX shell & tube cooler with removable ‘U’ shaped bundled tubes are made of internally grooved copper tubes
expanded into a heavy steel tubular sheets.
The chiller cooler & baffles are constructed of steel and brass respectively. The coolers are insulated with heavy closed
cellular foam insulation (3/4" thick). All chiller barrels are fitted with vent, drain connection and victaulic water pipe
connection as standard.
WATER SIDE
REFRIGERANT SIDE
DESIGN PRESSURE,
(BAR/PSIG)
TEST PRESSURE,
(BAR/PSIG)
DESIGN PRESSURE,
(BAR/PSIG)
TEST PRESSURE,
(BAR/PSIG)
SHELL & TUBE
HEAT
EXCHANGER
(COOLER)
16/235
22.8/335
29/426
41.5/610
STD
10/147
11.3/165
15.5/228
23.3/342
ASME (option)
CABINET
All units are of heavy gauge (G-90) galvanized steel. Steel sheet panels are zinc coated and galvanized by hot dip
process of lock-forming quality conforming to ASTM A 653 commercial weight G-90 followed by air dry paint or backed on
electrostatic polyester dry powder coat.
CONTROL PANEL
The control panel design is equivalent to NEMA 4 (
I
P55) with hinged door for easy access ensuring dust and weather-
proof construction. Internal power and control wiring is neatly routed, adequately anchored and all wires identified with
cable markers as per NEC standards applicable to HVAC industry.
The electrical controls used in the control panel are UL approved which are reliable in operation at high ambient condi-
tions for a long period.
100-50-HGBP-OFF
100-75-63-50-25-HGBP-OFF
100-83-66-50-33-16-HGBP-OFF
100-87-75-63-50-37-25-12-HGBP-OFF
100-92-83-75-66-58-50-42-33-25-16-8-HGBP-OFF
OPTION-2
OPTION-1
