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STRYKER VAV USER GUIDE
62-2030—01 14
RELATED TOPICS
“1. About Stryker VAV” on page 2
“2. Configuration” on page 4
K factor This is the VAV Box K-factor used to calculate the flow value.
IMPORTANT NOTES:
1. The K factor must be configured before starting the airflow balancing procedure.
2. The K factor must be obtained from specsheet of the terminal box manufacturer. If this is
not know, set the value to 1400.
3. Do not change the K value after the VAV box has been balanced.
4. Never set the K value to invalid or zero.
Flow Control Throttling
Range
The flow control throttling range is between 0-5000 FPM.
Flow Control Dead Band The flow control dead band must be configured based on the damper motor speed.
For Floating actuators:
For proportional actuators:
NOTE: Proportional actuators are not recommended for pressure independent airflow
control.
NOTE: Set the Flow Control Dead Band to 30fpm when the airflow filter is enabled.
Maximum Analog Output
Change per second
The flow control maximum analog output change per second.This must be configured based on
the damper motor speed.
Minimum Analog Output
Change per Second
This is the minimum amount the Analog Output will be changed per second for flow control.
Enable Low Flow Alarm Enable this option, if you want the controller to track and report low air flow as an alarm.
Enable airflow filter Enable this option to filter the air flowing inside the zone.
NOTE: Note: Set the Flow Control Dead Band to 30 fpm when the airflow filter is enabled.
Table 8. Flow Setpoint Fields. (Continued)
Name Definition
Motor Speed (sec) Deadband (fpm)
15 125
30 65
60 30
90 to 420 20
Model Number Deadband (fpm)
ML7174 460
ML7287 260
ML7475 330
MN7505 or MN7510 45
Motor Speed (sec)
maxAOchg per sec
15 to 90 1.1
180 0.56
420 0.24