ADJUSTING, AND BALANCING OF HVAC SYSTEMS.
3.4
SYSTEM PERFORMANCE TESTS
3.4.1
General Requirements
Before each refrigeration system is accepted, tests to demonstrate the
general operating characteristics of all equipment shall be conducted by a
registered professional engineer or an approved manufacturer's start-up
representative experienced in system start-up and testing, at such times as
directed. Tests shall cover a period of not less than [48] [_____] hours
for each system and shall demonstrate that the entire system is functioning
in accordance with the drawings and specifications. Corrections and
adjustments shall be made as necessary and tests shall be re-conducted to
demonstrate that the entire system is functioning as specified. Prior to
acceptance, service valve seal caps and blanks over gauge points shall be
installed and tightened. Any refrigerant lost during the system startup
shall be replaced. If tests do not demonstrate satisfactory system
performance, deficiencies shall be corrected and the system shall be
retested. Tests shall be conducted in the presence of the Contracting
Officer. Water and electricity required for the tests will be furnished by
the Government. Any material, equipment, instruments, and personnel
required for the test shall be provided by the Contractor. Field tests
shall be coordinated with Section 15990A TESTING, ADJUSTING, AND BALANCING
OF HVAC SYSTEMS.
3.4.2
Test Rport
The report shall document compliance with the specified performance
criteria upon completion and testing of the system. The report shall
indicate the number of days covered by the tests and any conclusions as to
the adequacy of the system. The report shall also include the following
information and shall be taken at least three different times at outside
dry-bulb temperatures that are at least 3 degrees C 5 degrees F apart:
a.
Date and outside weather conditions.
b.
The load on the system based on the following:
(1) The refrigerant used in the system.
(2) Condensing temperature and pressure.
(3) Suction temperature and pressure.
(4) For absorption units, the cooling water pressures and
temperatures entering and exiting the absorber and condenser.
Also the refrigerant solution pressures, concentrations, and
temperatures at each measurable point within the system.
(5) Running current, voltage and proper phase sequence for each
phase of all motors.
(6) The actual on-site setting of all operating and safety
controls.
(7) Chilled water pressure, flow and temperature in and out of
the chiller.
(8) The position of the [capacity-reduction gear] [gas supply
control valve] [fuel oil supply valve] at machine off, one-third
loaded, one-half loaded, two-thirds loaded, and fully loaded.
3.5
DEMONSTRATIONS
Contractor shall conduct a training course for the operating staff as
SECTION 15620A
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