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When the controller is powered after a reset or power outage, curtains controlled by static pressure will:
• Go into their tunnel mode setting if the temperature is above the Tunnel Entry temperature.
• Fully close if the outside temperature is 10 degrees Fahrenheit (5.5 degrees Celsius) or more below the setpoint
temperature. Then the curtains open to their proper opening size.
• Fully open if the outside temperature is not more than 10 degrees Fahrenheit (5.5 degrees Celsius) below the
setpoint temperature. Then the curtains close to their proper opening size.
Side Curtain Settings - continued
Perform Re-Sync
The curtains readjust themselves automatically with the controller when they open or close completely. When the
device is within 1”, or within three seconds of travel time, of fully open or closed, the channel is left on, allowing
the limit switch of the curtain to stop the moving of the curtain. This allows both the curtain and controller to
synchronize their positions.
However, you can have the curtain perform this re-synchronization manually once a day if needed. Set “Perform
Re-Sync at” to the time of day to perform the re-synchronization. If the curtain is less than 50% open at the specified
time, the controller will turn on the Close relay for the full amount of the Close Travel time of the device. If the
curtain is more than 50% open, the Open relay will turn on for the full Open Travel time. This will make sure the
device’s actual opening size matches the controller’s calculated opening.
• If the curtain is moving when Re-Sync is supposed to happen, the Re-sync operation will wait until
the curtain has stopped moving before it will turn the relay on for the full travel time.
• The Re-sync will happen regardless of what the controller is doing at the time of the Re-sync. So
the Re-sync needs to be done at a time of day that will have the least effect on the environment of
the barn. Example: you don’t want the Re-sync to close the curtain when a lot of fans are running,
which can cause the curtain to fail to reopen due to suction.
• If the curtain seems to be out of sync often, check to make sure the manual winch has been
properly adjusted and the travel times of the device are accurate.
Tunnel Enter and Exit opening sizes
These two settings allows the setting of the minimum opening size of the curtain before the controller will enter or
exit tunnel mode. When the controller starts to enter Tunnel mode, any curtain open less than their "Tunnel Entry
Size" will open to the Entry size setting. Any curtain that is open more than their "Tunnel Entry Size" will start to
close, but will not close below the Entry size. Once all the curtains and inlets are open to at least their Entry size,
the controller will go into Tunnel mode. When the controller starts to exit tunnel mode, the curtains and inlets will
operate the same way as they did when entering Tunnel, but using the "Exit Size" value for its minimum opening size,
before exiting tunnel mode.
SIDE CURTAIN GROUP #1 SETTING Z1-S01
Tunnel Entry size: 10 Exit size: 5
All the curtains and inlets will open to their set sizes regardless of their operating modes. Once Tunnel
mode or Natural Vent mode is entered, the curtains and inlets will operate based on their operating
modes again.
Curtain Movements at Power Up
SYSTEM
SETUP
SIDE CURTAIN GROUP #1 SETTING Z1-S01
Perform Re-Sync at : 0:00