substitution request - Alliance Construction Solutions

Project No.: 10145
550 15 th Street Dual Brand Hotel
03/16/2012
e. Indicate the sizes, velocities and flow (CFM or gpm) for main and branch
circuits and ducts. Include outside air intakes, exhaust air and relief air
louvers.
f. For rapid identification and for reporting purposes, all outlets shall be
numbered. The same applies to fan-coil and/or heating/cooling units in
hydronic systems.
g. Clearly indicate thermostat locations and other special conditions needed
by the TAB team in the field.
4. Report Forms:
a. Report forms shall be standard NEBB forms. Generate custom forms that
contain the information required by this Section when a standard NEBB
form does not exist for certain types of equipment. All design column
spaces shall be fully filled out for this submittal. When additional
information is required by this Section, it shall be written in on the NEBB
form.
b. If terminal airflows are to be determined by velocity readings, calculate
and submit the terminal velocities using the manufacturer's K factors.
c. Submit locations where pitot traverses of duct mains and branches are to
be made. Determine the number of readings, calculate velocities and set
up the duct pitot traverse test reports.
3.02 GENERAL SYSTEM AND EQUIPMENT PROCEDURES:
A. Balance all air and water flows at terminals to within +10% to –5% of design flow
quantities. Notify Contractor/Engineer in writing of conditions detrimental to the proper
completion of the test and balance work. Provide the Contractor/Architect/Engineer with a
copy of the notification.
B. Pressure relationships indicated on drawings shall take priority over air quantities.
C. Mark equipment settings with paint, including damper control positions, balancing cocks,
circuit setters, valve indicators, fan speed control settings and similar controls and devices,
to show final settings at completion of test-adjust-balance work.
D. Patch holes in insulation, ductwork and housings which have been cut or drilled for test
purposes, in a manner recommend by the original installer.
E. Measure, adjust and report equipment running motor amps and power factor, KW, rated
motor amperage, listed motor power factor, voltage, and all other nameplate data.
Perform these measurements for all equipment operational modes.
F. Check and adjust equipment belt tensioning.
G. Check keyway and setscrew tightness. Report any loose screws and notify Mechanical
Contractor prior to equipment balancing.
H. Record and include in report all equipment nameplate data.
I. Verify that all equipment safety and operating controls are in place, tested, adjusted and
set prior to balancing.
23 0593 - 6 TESTING, ADJUSTING, AND
BALANCING FOR HVAC