Programming instructions

Programming Power Block settings

To program curves

1. In the main window, click Settings, and then Ventilation.

2. Below Your Power Blocks, select the Power Block you want to program and then click Edit curves.

The Ventilation growth curves window displays.

3. Make the changes to the curve. For more information, read Tips for working with curves on

page 37.

 To enable or disable a curve, below Enabled curves, select or deselect the curve you want.

There is a checkmark in the box when the curve is enabled.

 To change the current day, beside Current day, type a number in the box or click Up or Down.

 To change the curve length, beside Curve length, type a number in the box or click Up or

Down.

4. Click OK to save the changes and return to the Settings window.

Select Ventilation starts any enabled curves and sends the current day's settings to the Power

Block.

Programming the temperature setbacks

A temperature setback automatically changes set points during specific times, called the setback

period, each day. The setback amount can be from 0.1 to 25°F (0.1 to 14°C). There are two types of

setback: DIF and power save.

DIF setback

DIF stands for differential method. During the setback period for DIF, Select Ventilation actively

cools the area to try to lower the temperature to the new set point. DIF is similar to manually setting

the master set point back by a number of degrees for a certain time every day. Because all equipment

follows the master set point, all equipment gets setback the same number of degrees.

For example, if the master set point is 70°F and the DIF setback is 5°, during the setback period, the

following happens.

When the temperature is above the setback, there is active cooling; Select Ventilation

operates fans and other cooling equipment.

When the temperature is below the setback, there is active heating; Select Ventilation

operates heating equipment.