3.2.5.6
Background Noise Correction
Determine background noise component of room sound (noise) levels for each
(of eight) octave bands as prescribed by AABC or NEBB.
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NOTE: Choose one of the following options.
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NOTE: Choose the text immediately below or the text
below entitled "TAB Work On Performance Tests Within
Seasonal Limitations." Use the text immediately
below in the case where the winter outdoor design
dry bulb temperature and the summer outdoor design
dry bulb temperature are within 19.4 degrees C 35
degrees F of each other. This will reduce the
number of trips to the contract site from two (one
per season) to one for performance testing by the
TAB field team. Use the second option, in the other
cases.
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][3.2.6
TAB Work on Performance Tests Without Seasonal Limitations
3.2.6.1
Performance Tests
In addition to the TAB proportionate balancing work on the air distribution
systems and the water distribution systems, accomplish TAB work on the HVAC
systems which directly transfer thermal energy. TAB the operational
performance of the [heating systems] [and] [cooling systems].
3.2.6.2
Ambient Temperatures
On each tab report form used for recording data, record the outdoor and
indoor ambient dry bulb temperature range and the outdoor and indoor
ambient wet bulb temperature range within which the report form's data was
recorded. That is, record these temperatures at beginning and at the end
of data taking.
3.2.6.3
Water Chillers
For water chillers, data as required by NEBB Form TAB 15-83, NEBB TABES
shall be reported, including refrigeration operational data.
3.2.6.4
Refrigeration Units
For refrigeration compressors/condensers/condensing units, data as required
by NEBB Form TAB 15-83, NEBB TABES shall be reported, including
refrigeration operational data.
3.2.6.5
Coils
Heating and cooling performance capacity tests shall be reported for [hot
water], [chilled water], [DX] [and steam coils] for the purpose of
verifying that the coils meet the indicated design capacity. Submit the
following data and calculations with the coil test reports:
[a.
For Central station air handlers with capacities greater than
SECTION 15950N
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