Advantage BG-N4 Series, Instruction Manual

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BG-N4 Glycol Chiller
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ADVANTAGE ENGINEERING, INC.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
Email: service@AdvantageEngineering.com
E. Valves and filters may be installed in the process water piping to facilitate service and
maintenance provided that such devices maintain the full inside diameter of the process
connection. If installed, all such devices must be open and clean during unit operation.
F. It is important to check all external process connections for leaks prior to starting the unit.
It is also important to check external connections for leaks and internal hose clamps and
connections for leaks after servicing the unit.
2.4 AIR COOLED CONDENSER
A. Air-cooled condensers require ambient air temperatures between -20°F and 95°F for
efficient operation. Operating above 95°F may result in elevated condensing pressures
and eventual shut-down on the high pressure limit switch. Air temperatures below -20°F
may result in over condensing pressures and cause a low pressure refrigerant fault.
B. Air flow is generated by the motor mounted fans or centrifugal blowers. Air flow is from
the outside of the chiller, through the condenser and exhausted through the top of the
unit. Exhaust air can not be ducted on motor mounted fan models.
C. The unit must have a minimum of 4 feet clearance at the air intake and 10 feet at the
vertical exhaust air discharge and must have adequate ventilation to dissipate the
rejected heat. The unit must not be placed in non-ventilated areas.
D. The unit has an air-cooled refrigerant condenser. A motor driven fan generates air flow
through the condenser to remove heat from the refrigerant system. The air cooled
condenser on the unit will discharge approximately 15,000 BTU per hour for every 12,000
Btu per hour of process cooling and the air flow rate is approximately 1,000 CFM per
compressor horsepower.
H. All air cooled units must have all enclosure panels in place before operating compressor.
Air will not be drawn through the condenser coil if the panels are not in place. Starting the
unit without the enclosure panels in place will result in a refrigerant fault.
I. Condenser Air Filtering. Use a filter that produces very low air flow restrictions.
Generally a disposable fiberglass filter with a MERV rating of 2 - 3 provides adequate
air filtration. The purpose of the filter is to prevent large particles such as dust, lint and
debris from fouling the condenser. You should be able to see through the filter media.
Using restrictive filter media can cause loss of chiller capacity, difficulty running in warm
weather and fan motor overheating.
Typical Filter materials.