CH550 and CH551 Chiller Operator’s & Installation Manual
© 2002-2010, IMI Cornelius Inc.
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Publication Number: 91272
INTRODUCTION
The Cornelius “CH” Series Water Chillers (Models CH550-A and CH551-A) are specifically designed to cool
clean water before it is circulated to the cooling application. The Unit includes a complete refrigeration system
and associated controls housed in a sturdy sheet metal enclosure with perforated panels for air circulation.
Options include a reservoir and a choice of pumps and temperature controls to provide a self-contained liquid
cooling circulation system tailored to a particular closed loop or tank application.
On closed loop systems, the Unit is provided with a pump and reservoir for recirculation of water from the chiller
to the process. On tank cooling systems, the Unit is provided without the reservoir and the pump is optional for
recirculation of water from the chiller to the tank. Control temperature is sensed on the outlet of the chiller for
closed loop systems and it is sensed on the inlet of the chiller for tank cooling systems.
The pump options consist of a small magnetic drive pump as standard with a variety of magnetic drive and
positive displacement pumps available for particular flow and pressure requirements. An optional bypass valve is
available for the pump circulation system. (This valve is standard on Units utilizing the positive displacement
pumps). This can be used to adjust pump flow and pressure to match process requirements. This valve also
allows internal recirculation within the chiller in the event the chiller outlet is obstructed.
SPECIFICATIONS
CH550-A
CH551-A
Condensing Unit Horse Power
1/2
1/2
Electrical (Volts/Phase/Hz)
115/1/60
230/1/60
F. L. A. (Amps)
12.5
6.2
Reservoir Capacity (Gal.)
2
2
Refrigerant 134-A (Lbs)
1.375
1.375
Stainless Steel Connections
1/2 in. FPT
1/2 in. FPT
Operating Water Temperature Range
40°-100° F
40°-100° F
Net Weight (Lbs)
160
160
Dimensions : Depth (Inches)
Width (Inches)
Height (Inches)
16-3/4
15-1/8
28-1/2
16-3/4
15-1/8
28-1/2
