Dentech AYRDYNE, Installation, Operation And Maintenance Manual

Page: 25 / 44

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AIRFLOW
OPERATION
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OUTPUT FREQUENCY (Hertz)
This numeric display and bar graph shows
blower speed in hertz.
INITIALIZATION SPEED (Hertz)
This numeric entry/display shows the speed
that the blower will run at when the system
is started. This value is adjustable between
minimum and maximum blower speed, normally
set at 20 and 60 hertz. Factory default setting is
45 hertz.
INITIALIZATION DELAY (s)
This numeric entry/display shows the amount
of time that the blower will maintain its
initialization speed when the system is started.
The elapsed time display (xx /) shows how much
time has accumulated. This value is adjustable
between 0 and 300 seconds (s). Factory default
setting is 30s.
MODE SELECTION
The mode selection allows the user to choose
between Auto or Manual control of the Airflow
Controller system.
Auto
Default and recommended mode of
operation. The controller adjusts the
blower speed in order to maintain a
constant airflow.
Manual
Blower speed set according to Manual
Speed numeric entry/display.
MANUAL SPEED (Hertz)
When in Manual mode, Manual Speed numeric
entry/display is made visible and the blower
speed is set to this value. This is used to set and
maintain blower speed.
a
b
8
9
10
11
12
Decreasing Blower Speed
System is running above the maximum
set point and decreases blower speed
in order to decrease airflow.
Maintaining Blower Speed
System is running inside the minimum
and maximum range.
Manual Blower Speed
System is in manual mode and the
blower speed is controlled by the
Manual Speed numeric entry/display.
Blower Running at Limit
System is running outside of the
minimum and maximum range but the
blower is running at limit which
prevents further airflow adjustment.
MAXIMUM SET POINT
This numeric entry/display shows the
maximum set point for the static pressure.
When static pressure rises above this set
point, blower speed is decreased. This value
is adjustable between the minimum set point
and the maximum transmitter output. Factory
default setting is 4 inWC.
MINIMUM SET POINT
This numeric entry/display shows the minimum
set point for the static pressure. When static
pressure falls below this set point, blower
speed is increased. This value is adjustable
between the minimum transmitter output and
maximum set point. Factory default setting is
2 inWC.
SPEED CHANGE DELAY (ms)
This numeric entry/display shows the delay
before increasing or decreasing blower speed.
Change this value to adjust how the blower
responds to changing readings of static,
velocity, or flow. This value is adjustable
between 0 and 5000 milliseconds (ms). Factory
default setting is 500ms.
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7
d
e
f
g
3.3