Sterlco M2B+ Controller - Manual (Page 28)

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4-7 Adjusting the Automatic Venting Timer
When the Auto Vent Cycle Timer is set, the controller will open the venting valve for the set
time at the startup of the unit. The Auto Venting Timer can be turned off, or it can be set to a
specified time period. For water TCUs, Auto Vent can be set between 1 and 10 minutes. For
hot oil TCUs, the vent time can be set between 1 and 60 minutes. TCUs are programmed at
the factory to Auto Vent for 1 minute for water units and 10 minutes for oil units.
Use the following procedure to adjust the Auto Vent Cycle parameter:
1. Press the Index button one time to access the Primary menu.
2. Press the Enter button.
3. Press the Index button until the display reads “Auto Vent Cycle.”
4. Press the Enter button.
5. Use the Up and Down buttons to set the cycle time to the desired time.
6. Press the Enter button to save the cycle time.
7. Press the Alarm Silence button to return to Running mode.
4-8 Using Crash Cool
The Crash Cool feature allows the user to quickly cool the process down. Once Crash Cool is
turned on, the setpoint is automatically adjusted to 0ºF, and the cooling valve is opened. Oil
TCUs not equipped with the optional heat exchanger will cool only through convection and
radiation.
Use the following procedure to being “Crash Cool”:
1. Press the Index button one time to access the Primary menu.
2. Press the Enter button
3. Press the Index button until the display reads “Crash Cool.”
4. Press the Enter button.
5. Use the Up and Down buttons to set the “Crash Cool” parameter to “ON.”
6. Press the Enter button to begin crash cooling. The setpoint will change to 0, and the
cool output will turn on.
7. Press the Alarm Silence button to return to Running mode.