should a test be required on more than one unit of
multiple, identical capacities.
The ARI testing of chillers allows a deviation to
chiller capacity of up to 5% at full load. Load
calculations should consider this tolerance.
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The Contractor and proposed chiller manufacturer shall be responsible for
performing the chiller factory test to validate the specified full load
capacity, full load EER, and [IPLV] [NPLV] in accordance with ARI 550/590
except as indicated. [The chiller factory test shall be performed in the
presence of a Government representative.] The Contractor and chiller
manufacturer shall provide to the Government a certified chiller factory
test report in accordance with ARI 550/590 to confirm that the chiller
performs as specified. Tests shall be conducted in an ARI certified test
facility in conformance with ARI 550/590 procedures and tolerances, except
as indicated. At a minimum, chiller capacity shall be validated to meet
the scheduled requirements indicated on the drawings. Tolerance or
deviation shall be in strict accordance with ARI 550/590. Stable operation
at minimum load of 10 percent of total capacity shall be demonstrated
during the factory test.
2.10.1.1
Temperature Adjustments
Temperature adjustments shall adhere to ARI 550/590 to adjust from the
design fouling factor to the clean tube condition. Test temperature
adjustments shall be verified prior to testing by the manufacturer. There
shall be no exceptions to conducting the test with clean tubes with the
temperature adjustments per ARI 550/590. The manufacturer shall clean the
tubes, if necessary, prior to testing to obtain a test fouling factor of
0.0000.
2.10.1.2
Test Instrumentation
The factory test instrumentation shall be per ARI 550/590 and the
calibration shall be traceable to the National Institute of Standards and
Technology.
2.10.1.3
Test Report
A certified test report of all data shall be forwarded to the Government
for approval prior to project acceptance. Calibration curves and
information sheets for all instrumentation shall be provided.
2.10.1.4
Equipment Adjustments
If the equipment fails to perform within allowable tolerances, the
manufacturer shall be allowed to make necessary revisions to his equipment
and retest as required. [The manufacturer shall assume all expenses
incurred by the Government to witness the retest.]
2.10.2
Chiller Sound Test
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NOTE: Require factory sound tests for chiller
applications where sound levels are a critical
issue. Typically, factory sound tests are only
performed on large centrifugal and rotary screw
SECTION 15620A
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