Airwell RWC 360 [2/16] Compressors
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Airwell RWC 360 [2/16] Compressors

Airwell RWC 200 [2/16] Compressors
Page 2
Specification
General characteristics
The water-cooled water chillers RWC and remote air-cooled water
chillers RWR are a compact design suitable for chilled water or
glycol cooling. They are designed to be located in a plant room.
RWC chillers require a cooling tower or dry cooler for heat rejection,
and RWR chillers require an air-cooled condenser (supplied by
others) for heat rejection.
Benefits
A narrow width and low base area make them an ideal replacement
for existing chillers in refurbished buildings.
The range is available with refrigerant R407C with zero ozone
depletion value.
Units are easy to install with low weight, single power and control
supplies plus flow and return water connections.
The units are acoustically lined with high-density insulation to ensure
a particularly quiet operation.
All models have two refrigerant circuits to provide 50% safety factor,
and user-friendly microprocessor control. All components are easily
accessible for maintenance operations.
The chillers shall be completely factory assembled with all
interconnecting refrigerant piping and wiring ready for field
installation. After assembly a full test run shall be performed with
water flowing through the evaporators.
The RWC models shall be pressure tested, evacuated and fully
charged with refrigerant and include an initial oil charge. RWR
models shall be pressure tested evacuated and include a nitrogen
holding charge and an initial oil charge.
The unit base and frame shall be of heavy gauge galvanized steel
fastened with stainless steel nuts and bolts. Models shall have a
galvanized steel enclosure with an access panel. Galvanized steel
parts shall be finished in baked paint colored white RAL 9001.
Compressors
The Scroll compressors shall have internal motor protection and an
internal overflow valve from discharge to suction. Starting shall be
direct on line. The compressors shall be mounted on rubber anti-
vibration pads and housed in a separate enclosure ensuring an
efficient acoustic insulation.
Evaporators
The dual circuit evaporator shall be the direct expansion type
with refrigerant in the tubes and chilled liquid flowing through the
baffled shell. The design working pressure of the shell will be 10
bars and 30 bars on the tube side. Vent and drain connections shall
be provided. The cooler shall be covered with flexible, closed-cell,
foam insulation.
Condensers
The condenser shall be a cleanable shell and tube type with a built
in sub-cooler and removable water heads. The design working
pressure on the waterside shall be 10 bars.
For units RWR, one provision shall be made for connection to a
remote air-cooled condenser (supplied by others).
Refrigerant circuits
Two refrigerant circuits shall be provided and each circuit shall
include : a service valve for refrigerant charging, suction, discharge
and liquid line isolating valves, a sight glass with moisture indicator,
a thermostatic expansion valve, and a wire mesh filter.
Power and control panel
All controls and motor starting equipment necessary for full unit
operation shall be factory wired and tested. Control and power
components shall be located in separate compartments. The panel
shall be designed to IP53 weather protection.
The control compartment shall contain an electronic circuit board
and a soft touch key control panel with display of operating
functions, alarms and stops.
The power compartment shall contain compressor contactors, fuses
and supply protection.
Accessories and options
Acoustic Kit
Acoustic jacket fitted on each compressor.
Remote Control Kit
Field mounted control panel to provide remote control.
HP & LP Pressure Gauge Kit
Factory fitted mechanical gauge kit for display of unit operating
parameters.
Condenser Manifold Kit (RWC only)
Field mounted manifolds to provide a single point of connection for
leaving and return water circuits of condensers.
Flow Switch Kit
Field mounted flow switches for evaporator water circuits.
Pressostatic Valves
(RWC only)
Pressostatic valves are remotely located in the leaving condenser
water pipe work from each of the two condensers. They are wired
to the RWC control panel.
When the actual condensing pressure equals the control set point,
the valves open the modulating water flow.

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