Installation Guide

Accessing the Damper Characterization Table
Manually Entering Damper Characterization Data
While not ideal, the damper characterization data can be calculated and entered manually in the AFMSTable. This
should only be done if — in the allotted time for Setting Up an AFMS on page 3 — the ΔT is unlikely to be greater
than the Min Delta Temp for the duration of Learning Mode. In that case, for reliability, running Learning Mode at a
later available time is still recommended.
Accessing the AFMS Table
1.
Go to AFMS, then select the Device Name of the AFMScontroller.
2.
Select theTune tab.
Interpreting the AFMSTable
Label Description
OAFraction
Percentage (expressed as a decimal) of the supply airflow that is outside
airflow at the given outside air damper position
Outside Air Closed Outside air damper at closed position
Outside Air 5 Outside air damper at 0–5% open
Outside Air 10
Outside air damper at 5–10% open
Outside Air 15
Outside air damper at 10–15% open
Outside Air 20 Outside air damper at 10–20% open
Outside Air 30
Outside air damper at 20–30% open
Outside Air 40
Outside air damper at 30–40% open
Outside Air 50 Outside air damper at 40–50% open
Outside Air 60
Outside air damper at 50–60% open
Outside Air 70
Outside air damper at 60–70% open
Outside Air 80 Outside air damper at 70–80% open
Outside Air 90
Outside air damper at 80–90% open
Outside Air 100
Outside air damper at 90–100% open
Calculating the damper characterization data
Use the %OA equation found in ASHRAEStandard 111, section 7.6.3.3: "Flow Rate Approximation by Temperature
Ratio".
Note: Find ASHRAE Standard 111 on this page of read-only versions of ASHRAE standards.
KMC AFMS Commander Application Guide 14 AG230215A