Programming instructions

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The Ventilation settings window is where you program the variable stage settings. The following
example is for cooling stages. The window for a heating stage is similar.
A This button displays the variable stage settings.
B This is where you select the variable stage you want to program.
C These are the settings for the selected variable stage. The diagram corresponds to the settings.
The blue area (or orange for a heat stage) represents when the equipment will be on. The red
line represents the ambient temperature.
 To adjust a setting, click and drag its slider up or down (left or right for the idle speed).
 To adjust a setting by 0.1-degree or 1 percent increments, click the slider and then press UP
or DOWN on your keyboard.
 To adjust a setting by 1.0-degree or 10 percent increments, click the slider and then press
PGUP or PGDOWN on your keyboard.
 After the room is properly set up and balanced, you should not need to change
the variable stage settings. Changing the settings after the room is set up can
affect the ventilation balance in the room. If you need to change settings after the
room is set up, you should change the Power Block settings. For more
information, read Programming Power Block settings on page 31.
 If the Power Block is in empty room mode:
 Variable heating stages – all settings are available. Equipment operates only if
needed to keep the temperature at or above the set point.
 Variable cooling stages – only the idle speed setting is available. Equipment
operates only to maintain minimum ventilation.
A
C
B