Vent (Proportional) - Equipment Programming

The vent opening is defined in percentage terms where 0% is vent closed and 99% is where the vent is fully open. NORM is the normal stage when neither heating or cooling is usually required. C1 is the lowest stage of cooling, and C6 is the highest (or maximum) cooling stage. Enter your desired vent opening percentage for each of the stages. The Open Time is the time in minutes and seconds that it takes for the vent to go from its full closed to full open position or vice versa.(see blow example)

Note: This equipment type requires 2 consecutive output channels 1&2, 3&4, etc. The first channel (odd numbered) must be wired to OPEN the vent, and the other (even numbered) to CLOSE it.

Note: to determine the vent open time, turn manual toggle switch on, and using a clock or stopwatch, time the vent as it goes from its closed to open position

Wind Overrides Wind overrides limits are important for safe and effective vent operation. Of course, a weather station (or Link4 anemometer) must already be installed to use this feature. First you have to set Dir , which is the direction that the vent faces when open. You have eight choices: N, NE, E, SE, S, SW, W, and NW.

The Pearl™ offers the ability to read true vent position if you’ve wired a vent position sensor to your Pearl.

This field sets which Position Sensor to look at (that you have defined in your Menu Mapping).

If the vent position reading is different from where the computer thinks the vent is by more than a certain percentage that you select, then an alarm is triggered assuming that the reading has persisted for the length of time that you also must enter. This is an alarm that is particularly useful if a worker were to leave the vent open from using the manual switches. When the alarm triggers both the high and low alarm relays are turned on and both the high and low temp LED lights are on.

The purpose for the Auto-calibrate mode is to establish the open-close run time of the vent between the open and close positions of the position sensors. When the Auto-calibrate option is switched ON , this mode is engaged and the vent will automatically go through the open-close routine and the runtime between the position sensor positions will be saved in memory. Pearl

To program Vent (Proportional) from Pearl Cloud Platform you would do the following:

To program Vent (Proportional) from Pearl Cloud Platform you would do the following:

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