Complete Compiled Specification.pdf - Peck Ormsby Construction

Temperature Tabulation:
Of all conditioned spaces on a room-by-room basis, a total of at least three readings will be taken of each room
on successive days. Record outside ambient temperature at two-hour intervals. The total variation in
conditioned space temperatures shall not exceed 2 deg. variance from the thermostat settings.
Air Volumes and Velocities:
As measured at each supply grille, return air grille, and exhaust air grille or air handling device. In all fan
systems, the air quantities indicated on the plans may be varied as required to secure a maximum temperature
variation of two degrees within each separately controlled space, but the total air quantity indicated for each
zone must be obtained. It shall be the obligation of the contractor to furnish or revise fan drive and/or motors, if
necessary, without cost to the Owner, to attain the specified air volumes.
Air Pressure:
As measured across each supply fan, cooling coil, heating coil, air handling unit filter and exhaust fan. Relate
these readings to the particular fan curve in terms of CFM handled at the various static pressures, and their
relationship to fan power and fan instability.
Water Temperature:
Shall be taken entering and leaving the coils and heat exchangers under maximum load conditions in each case.
Water Pressure:
At all gauge connections, pressure readings at coils and pumps shall be related to coil and pump curves in terms
of gpm handled and confirmed by gpm flow thru Venturi units at each air handler. The flow of water thru all
water coils shall be adjusted by manipulating valves until the rated pressure drop across each coil is obtained
and total water flow is verified by Venturi readings. On those with 3-way valves, rated pressure drop shall first be
adjusted thru the coils in each of the several systems and the temperature differential between inlet and outlet
shall be determined to be in each of the several systems and the temperature differential between inlet and
outlet shall be determined to be in accordance with its rating. The bypass valves shall then be adjusted on each
coil until an equal pressure drop between supply and return connections is obtained with the three-way valves
set to bypass all coils in each of the several systems.
Electrical Current/Voltage:
Measurements to be taken at the drive motor on each piece of equipment.
Fan Speeds:
To be measured in RPM.
_________________________________________________________________________________________
SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
BALANCING 15043-4