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FEATURES
These ASQ air cooled screw water chillers offer the ultimate combination of energy saving design, superior engineering
features and flexibility of application as required by today’s market.
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These chillers incorporate the newest advanced microprocessor controller. This controller monitors analog and digital
inputs to achieve precise control & protective functions of the air cooled water chiller units. This microprocessor
controller is complete with all the hardware and software necessary to control the chiller unit and insures its efficiency
and reliability.
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Designed to conform to
ARI standard 550/590
water chilling packages using the vapor compression cycle.
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Designed to conform to
ANSI/ASHRAE 15-1994
Safety code for Mechanical Refrigeration.
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Compact unit design and excellent serviceability.
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All packaged chillers incorporate compact water coolers with enhanced inner grooved copper tubes bundled into a
"U" shaped and expanded into a steel tubular sheet which offer efficient water flow as well as heat transfer design
resulting in optimal unit performance.
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High Energy Efficiency Ratio (EER) semi-hermetic compact
twin screw compressors
provided in these units.
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Single point power connection to minimize job site installation cost and time.
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Completely wired control panel with the advanced microprocessor controller provides all the necessary operating and
safety controls.
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Compressors are with
part winding start
.
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Low noise condenser fans, direct drive at 860 RPM with rolled form venturi design to eliminate short circuiting of
airflow.
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All fans are die cast aluminum propeller type with aerodynamic design, top discharge, provided with protective
grille mounted on top panel within the unit casing.
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All condenser fan motors are totally enclosed air over type (TEAO) with class ''F'' winding insulation and ball bearings.
Inherent thermal protection of the automatic reset type and specially designed for outdoor application.
CAPACITY CONTROL
A. Standard settings:
These chillers are equipped with
stepless capacity control
system as standard for very accurate response to load
requirements and best part load efficiency. Each compressor is equipped with a slider controller that enables to modulate
capacity between 25% to 100%, thus giving a broad range to control total chiller capacity between 10% to 100% on an
average. This system has following advantages:
1. Infinite capacity modulation allows the compressor capacity to exactly match the cooling load.
2. Reduce compressor cycling that leads to better operational reliability.
3. Reduce operating cost.
B. Optional settings:
The COOLINE packaged chillers incorporate stepped load shedding as required by some energy management systems.
Modulation of capacity in response to system load requirements is affected by a microprocessor controller which moni-
tors the leaving water temperature.
Capacity control is achieved by cycling compressor ON/OFF and slider capacity pre-set control valve. The use of slider
control valve provides excellent part load capacities.
On multiple compressor units, capacity is controlled by a combination of slider capacity control valve and compressor
staging. For such optional stepped load shading, please see the following table.
STANDARD SPECIFICATIONS
