23 09 23.13 20 Attachment 5.pdf
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- N4008524R2785
About this file
This document is a technical specification file detailing Change of Value (COV) and Trend Configuration Standards for HVAC and building management systems at Camp Lejeune. The document provides precise configuration guidelines for various measurement points, including specific Change of Value (COV) settings for different parameters such as temperature, humidity, static pressure, fan outputs, valve outputs, and differential pressure. The standards specify decimal point precision for each measurement type, ranging from whole numbers to hundredths of a decimal place. The second section of the document outlines trend configuration requirements, specifying trend types (Interval or Change of State), intervals (15 minutes for analog points), and buffer sizes for different point types like Analog Outputs, Analog Inputs, Binary Outputs, Binary Inputs, and Setpoints.
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Text version
Camp Lejeune COV and Trend Configuration Standards
The following Change of Value (COV) and Trend configurations shall be followed unless required otherwise.
Example using VAV Box points
Object
ID COV
Display Precision
ZNT‐SP 0.1
ZN‐T 0.3
SA‐F 3
DPR‐O 1 1
HTG‐O 1 1
DA‐T 0.3
DAT‐SP 0.1
* COV settings
Temperature = 0.3 deg F
Humidity = 1.0 %
Static Pressure = 0.1 in wc
Fan Outputs = 1.0 %
Valve Outputs = 1.0 %
Differential Pressure = 0.1 psi
VAV Air Flow = 3 cfm
Airflow Station = 10 cfm
RPM=10
kwh=25
HZ=1
HW‐DP=.1
Flow=3 gpm Water DP = .1 psi
** Decimal Points Set
Temperature = 10ths (one to right of decimal .9) Humidity = 10ths (one to right of decimal .9) Static Pressure = 100ths (hundredths two to right of decimal .09) Fan Outputs = 1s (no decimal) Valve Outputs = 1s (no decimal) Dampers Outputs = 1s (no decimal) Differential Pressure = 10ths (one to right of decimal .9) VAV Air Flow = 1s (no decimal) Water DP = 10ths (one to right of decimal .9)
Camp Lejeune COV and Trend Configuration Standards
Trend Configurations – Interval and Change of State (COS)
Point Type Trend Type Interval Buffer (Total before rollover or archive)
Analog Output (AO) Interval 15 minute 480
Analog Input (AI) Interval 15 minute 480
Binary Output (BO) COS COS 100
Binary Input (BI) COS COS 100
Setpoint COS COS 100
File details come from the government source that posted it. Updated .