Otherwise, derive the leakage rate for each system
based on procedure outlined in SMACNA Leakage Test
Mnl for Seal Class A. If round/oval metal ductwork
only is specified, C sub L = 3 will be used,
otherwise C sub L = 6 may be used. The value of P
used will be equal to the highest duct static
pressure class; i.e., 3, 4, 6, or 10, for the
ductwork to be tested. Where major components such
as fans, coils, filters, etc. will be included in
ductwork test, an appropriate allowance will be
included in the maximum allowable leakage rate.
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Perform ductwork leak test for the entire air distribution and exhaust
system, including fans, coils, [filters, etc.] [filters, etc. designated as
static pressure Class 750 Pa 3 inch water gauge through Class 2500 Pa 10
inch water gauge.] Test procedure, apparatus, and report shall conform to
SMACNA Leakage Test Mnl. The maximum allowable leakage rate is [_____] L/s
cfm. Ductwork leak test shall be completed with satisfactory results prior
to applying insulation to ductwork exterior.
3.5
DAMPER ACCEPTANCE TEST
Operate all fire dampers and smoke dampers under normal operating
conditions, prior to the occupancy of a building to determine that they
function properly. Test each fire damper equipped with fusible link by
having the fusible link cut in place. Test dynamic fire dampers with the
air handling and distribution system running. Reset all fire dampers with
the fusible links replaced after acceptance testing. To ensure optimum
operation and performance, install the damper so it is square and free from
racking.
3.6
TESTING, ADJUSTING, AND BALANCING
The requirements for testing, adjusting, and balancing are specified in
Section [15990A TESTING, ADJUSTING, AND BALANCING OF HVAC SYSTEMS] [15950N
HVAC TESTING/ADJUSTING/BALANCING]. Testing, adjusting, and balancing shall
begin only when the air supply and distribution, including controls, has
been completed, with the exception of performance tests.
3.7
PERFORMANCE TESTS
After testing, adjusting, and balancing is complete as specified, test each
system as a whole to see that all items perform as integral parts of the
system and temperatures and conditions are evenly controlled throughout the
building. Make corrections and adjustments as necessary to produce the
conditions indicated or specified. Capacity tests and general operating
tests shall be conducted by an experienced engineer. Tests shall cover a
period of not less than [_____] days for each system and shall demonstrate
that the entire system is functioning according to the specifications.
Make coincidental chart recordings at points indicated on the drawings for
the duration of the time period and shall record the temperature at space
thermostats or space sensors, the humidity at space humidistats or space
sensors and the ambient temperature and humidity in a shaded and weather
protected area.
3.8
CLEANING AND ADJUSTING
Provide a temporary bypass for water coils to prevent flushing water from
SECTION 15895
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