3.2.7.3
Sound Measurements
Comply with paragraph entitled "Sound Measurement Work," specifically, the
requirement that a room must be operating in its noisiest mode at the time
of sound measurements in the room. The maximum noise level measurements
could depend on seasonally related heat or cooling transfer equipment.
3.2.7.4
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.
3.2.7.5
Water Chillers
Water chillers: For water chillers, data as required by NEBB Form TAB
15-83, NEBB TABES shall be reported, including refrigeration operational
data.
3.2.7.6
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.
3.2.7.7
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
26,370 Watts7.5 tons (90,000 Btu) cooling, such as factory
manufactured units, central built-up units and rooftop units,
capacity tests shall be conducted in accordance with AABC MN-4,
procedure 3.5, "Coil Capacity Testing."
Entering and leaving wet and dry bulb temperatures shall not be
determined by single point measurement, but shall be the average
of multiple readings in compliance with paragraph 3.5-5,
"Procedures", (in subparagraph d.) of AABC MN-4, Procedure 3.5,
"Coil Capacity Testing."
Submit part-load coil performance data from the coil manufacturer
converting test conditions to design conditions; the data shall be
used for the purpose of verifying that the coils meet the
indicated design capacity in compliance with AABC MN-4, Procedure
3.5, "Coil Capacity Testing," paragraph 3.5.7, "Actual Capacity
Vs. Design Capacity" (in subparagraph c.).
b.
For units with capacities of 26370 Watts7.5 tons (90,000 Btu) or
less, such as fan coil units, duct mounted reheat coils associated
with VAV terminal units, and unitary units, such as
through-the-wall heat pumps:
The apparent coil capacity shall be determined by calculations
SECTION 15950N
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