a.
Ability to communicate with digital controllers, uploading and
downloading of control programs
b.
Text editing program:
Demonstrate ability to edit the control
program off line.
c.
Reporting of alarm conditions: Force alarms conditions for each
alarm, and ensure workstation receives alarms.
d.
Reporting trend and status reports: Demonstrate ability of
software to receive, display, and save trend and status reports.
3.3.6
Performance Verification Tests
Conduct the performance verification tests to demonstrate control system
maintains setpoints, control loops are tuned, and controllers are
programmed for the correct sequence of operation. Conduct performance
verification test during seven days of continuous HVAC and DDC systems
operation and before final acceptance of work. Specifically the
performance verification test shall demonstrate the following:
3.3.6.1
Execution of Sequence of Operation
Demonstrate the HVAC system operates properly through the complete sequence
of operation, for example seasonal, occupied/unoccupied, and warm-up.
Demonstrate proper control system response for abnormal conditions by
simulating these conditions. Demonstrate hardware interlocks and safeties
work. Demonstrate the control system performs the correct sequence of
control after a loss of power.
3.3.6.2
Control Loop Stability and Accuracy
Furnish the Government graphed trends of control loops to demonstrate the
control loop is stable and that setpoint is maintained. Control loop
response shall respond to setpoint changes and stabilize in 3 minutes.
Control loop trend data shall be real time and the time between data points
shall not be greater than one minute. The contractor shall provide a
printer, either the project printer or temporary, at the job site for
printing graphed trends. The printer shall remain on the job site
throughout Performance Verification Testing to allow printing trends.
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NOTE: The A&E or designer of the system should
prepare a spreadsheet for the PVT testing
(performance verification test) as applied to the
installed system. It is suggested that the PVT be
shown on a separate "M" drawing immediately after
the Sequence of Operation with requirements for
conducting the test using the workstation provided
by this specification. Use the Sequence of
Operation as a guideline. Show on the spreadsheet
the workstation requirements, surge protection, and
special inputs/outputs. As a minimum the
spreadsheet should contain the following elements...
PVT REQUIREMENT--EXPECTED RESULT--DATE--REVIEWER'S
SIGNATURE
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SECTION 15910N
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