substitution request - Alliance Construction Solutions

1. Preliminary Testing and Balancing Schedule:
Project No.: 10145
550 15 th Street Dual Brand Hotel
03/16/2012
a. Prepare a project schedule. Schedule shall indicate critical path of the
balancing process and shall incorporate both requirements of other
contractors (including joint efforts) necessary to meet test and balance
commitments and process flow of test and balance work. Coordinate with
GC and insert critical steps into project master schedule.
2. Data to be Procured:
a. Fan and pump curves, including performance data.
b. Manufacturer's performance data for all equipment to be balanced: Data
shall include air and hydronic pressure differences, the direction of air
and water flow, temperature differentials, capacities, operating
temperatures and pressures, and limit of safety temperatures and
pressures.
c. Fan and pump motor nameplate data.
d. Motor starters, including sizes, locations and thermal overload protection
ratings.
e. Drives: Sheave data, pitch diameters, belt sizes and quantities, limits of
adjustment, types of belt guards, etc.
f. Effective areas (K factors) for all air terminal devices for the velocitymeasuring
instrument recommended. Also obtain air pattern adjustment
and sound data.
g. Manufacturer's data and test procedures for all air handling devices, such
as variable air volume boxes, constant volume regulators, static pressure
dampers, etc.
h. Manufacturer's data for air pressure drop across louvers, filter banks,
sound traps, remote coils and other devices in the air distribution system.
Note whether louvers are provided with screening and whether filter
pressure drop data is for clean, partially dirty, or dirty filters.
i. Temperature Control Diagrams: Obtain necessary data required for TAB
work.
j. Assemble manufacturer's catalog data for all HVAC equipment, including
pumps, air moving equipment and air terminal devices. This requirement
is in addition to shop drawings and submittal data where possible. Only
include performance data which pertains to the T&B work. Construction
technical data is not required.
k. All data shall be compared to the information on the construction
documents. Discrepancies shall be identified for review by the Engineer.
All data shall be recorded in the design columns of NEBB report forms.
3. System Schematic Drawings:
a. Submit reduced drawings of each HVAC duct system. The test and
balance contractor can obtain drawing files from MDP& Associates for
development of these drawings.
b. Submit similar drawings for extensive piping systems.
c. For large buildings or where there is more than one system, submit a
separate layout for each floor or for each system. Identify test locations,
outlets, etc. on these drawings.
d. All test locations, which include dampers, regulating devices, terminal
units, supply outlets, return and exhaust inlets, etc., shall be numbered.
23 0593 - 5 TESTING, ADJUSTING, AND
BALANCING FOR HVAC