3.1.7
Pressure Gages
Pneumatic output lines shall have pressure gages mounted near the digital
controllers.
3.1.8
Pneumatic Tubing
Run concealed tubing in finished areas, and run exposed tubing in
unfinished areas such as mechanical equipment rooms. For tubing to be
enclosed in concrete, provide rigid metal conduit or intermediate metal
conduit. Provide tubing parallel and perpendicular to building walls
throughout. Maximum spacing between tubing supports shall be 5 feet. With
the compressor turned off, test each tubing system pneumatically at 1.5
times the working pressure, with a maximum pressure drop of 1 psig.
Correct leaks. Caulking of joints will not be permitted. Do not run
tubing and electrical power conductors in the same conduit.
3.1.9
Control Drawings
a.
Post laminated copies of as-built control system drawings in each
mechanical room.
b.
Provide 3 sets of as-built control drawings to the Contracting
Officer.
3.2
Test and balance support
Controls contractor will coordinate with and provide full time on-site
technical support to test and balance (TAB) personnel specified under
Section 15950N HVAC TESTING/ADJUSTING/BALANCING or any other documents in
the project specification. This support shall include:
a.
On-site operation of control systems for proper operating modes
during all phases of balancing and testing.
b.
Control setpoint adjustments for proper balancing of all relevant
mechanical systems, including VAV boxes.
c.
Setting all control loops with setpoints and adjustments
determined by TAB personnel.
3.3
FIELD QUALITY CONTROL
3.3.1
General
a.
Obtain approval of the field test plan and performance
verification test plan for each phase of testing before beginning
that phase of testing. Give the Contracting Officer written
notification of planned testing at least 30 days prior to test.
Notification shall be accompanied by the proposed test procedures.
In no case will the Contractor be allowed to start testing
without written Government approval of field test plan and
performance verification test plan.
b.
Demonstrate compliance of the heating, ventilating, and air
conditioning control system with the contract documents. Furnish
personnel, equipment, instrumentation, and supplies necessary to
perform calibration and site testing. Ensure that test personnel
are regularly employed in the testing and calibration of DDC
SECTION 15910N
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