Chillers
ULTIMA 2000
Chillers
6
Installation & Maintenance Manual : 903-099 IM E 05/00
General Description
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UNIT IDENTIFICATION
AIR COOLED SCREW LIQUID CHILLER
USC
Ultima Screw Chiller
250 - 650
Model Size (Expressed as Nominal Cooling in kW)
D-
D
ual Circuit - Standard Chiller
DQ-
D
ual Circuit -
Q
uiet Chiller
DSQ-
D
ual Circuit -
S
uper
Q
uiet Chiller
8, 12 or 16
Number of Fans
Example
USC300D-8
INTRODUCTION
The Airedale range of Ultima air cooled liquid chillers covers the nominal capacity range
250kW to 650kW in 27 model sizes including Standard D, Quiet DQ and
Super Quiet DSQ
variations.
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Attention has been placed on maximising the unit’s performance while keeping the sound
levels and footprint to an absolute minimum.
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REFRIGERANTS
The range has been designed and optimised for operation with the ozone benign
R407C refrigerant.
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The Standard Ultima chiller comes complete with:
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•
Head Pressure Control - fans are individually switched by a Microprocessor
STANDARD CHILLER
- D
•
Evaporator Trace Heating
•
Quiet Fans
•
Single Screw Compressors
•
Shell & Tube Evaporator
•
Dual Independent Refrigeration Circuits
With the benefits of the Standard range, the Quiet chiller is supplied with an acoustic
package, which incorporates:
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QUIET CHILLER
- DQ
•
Acoustically lined compressor enclosures
•
3 phase Head Pressure Controllers, which modulate the fan speeds collectively to
maintain a constant condensing pressure with minimum fan speeds.
SUPER QUIET CHILLER
- DSQ
With the benefits of the Standard range, the Super Quiet chiller is supplied with a Quiet
acoustic package, which incorporates the following to become one of the quietest
chillers available:
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•
Acoustically lined compressor enclosures
•
Reduced speed 680 rpm condenser fans
•
3 phase Head Pressure Controllers, which modulate the fan speeds collectively to
maintain a constant condensing pressure with minimum fan speeds.
•
The use of enhanced performance condenser coils on the DSQ Quiet Package
enables a chiller capacity similar to the D and DQ
models to be maintained.
