KMC Controls BAC-5051 TRUEFIT Measurement System Router User Guide

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Set Control Mode  

On the Configure page, in the System Setup group:  

1. For Control Mode, select from the drop-down menu the option that will be  

the AFMS’s normal mode for this installation:  

• OA FLOW CTRL: The AFMS modulates the damper actuator to maintain  

the Outside Air Flow Setpoint (CFM).  

• PASS THROUGH: The AFMS passes control of the damper actuator to  

another controller. (The AFMS measures and monitors only.)  

• MAT CTRL: The AFMS modulates the damper actuator to maintain the  

Mixed Air Temp Setpoint (°F/°C).  

2. Click Save.  

ABOUT TESTING AND BALANCING AFMS  

If everything was installed and configured correctly prior to running Learning  

Mode, the AFMS Table data is very reliable. The AFMS uses the same method  

from ASHRAE Standard 111 (Section 7.6.3.3, “Flow Rate Approximation by  

Temperature Ratio”) that a good tester and balancer should use. Furthermore, as  

the AFMS performs the method, it takes the OAT, RAT, and MAT measurements  

simultaneously and several times for reliable averages, increasing the reliability  

of the data.  

However, should verification be required, the following guidelines should be  

observed:  

• Make measurements using NIST-traceable instruments.  

• Use the method from ASHRAE Standard 111, Section 7.6.3.3, “Flow Rate  

Approximation by Temperature Ratio” to calculate the table data.  

• Should an adjustment be needed, adjust single data items from the AFMS  

Table rather than making a linear adjustment.  

NOTE: TAB OA Factor (found in the Calibration group under Tune) should be at 1  

and not adjusted.  

If large adjustments need to be made to the AFMS Table data, one or more of the  

sensors may have been installed incorrectly and/or a setting was misconfigured  

prior to running Learning Mode. The problem should be corrected by fixing the  

installation and/or configuration, then running Learning Mode again.  

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BAC-5051(A)E Pages for Configuring an AFMS, AG230819C  

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General	Details
Name	KMC Controls BAC-5051 TRUEFIT Measurement System Router User Guide
Make	KMC CONTROLS
Language	English
Filetype	PDF (Download)
File size	0.27 MB

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