Programming instructions

32
Empty room mode
Empty room mode is a power saving feature that allows you to put a Power Block in an idle state.
Because empty room mode has its own settings, you do not have to change your normal, operational
settings. When you place a Power Block in empty room mode, it uses the empty room settings. When
you return the Power Block to normal mode, it returns to using the normal settings.
In empty room mode, there is no active cooling, no tunnel mode, no ventilation curves, and no
temperature setbacks. If the Power Block has variable stages, Select Ventilation maintains minimum
ventilation. Select Ventilation operates heating equipment only if needed to keep the temperature at
or above the set point.
Each type of equipment has different settings it uses during empty room mode. For more
information about equipment settings, read Programming equipment settings on page 45.
 Variable cooling equipment – only the idle speed setting is available and operates continually at
that speed.
 Variable heating equipment (PBx and PB-6 only) – all settings are available. Equipment operates
only if needed to keep the temperature at or above the set point.
 Single-stage cooling equipment – no settings are available. Cooling equipment does not
operate.
 Single-stage heating equipment – all settings are available. Heating equipment operates only if
needed to keep the temperature at or above the set point.
 Actuators – only one inlet position is available. Inlets maintain this programmed position.
 Curtains – no settings are available; the curtains are closed.
 Timed events – timed events are not affected by empty room mode.
Program the empty room set point to a low, but safe temperature. For example, if
there are water lines in the room and there is a risk of freezing, set the set point to
40°F; do not set it to 20°F.
To change operation modes
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
settings.
The Ventilation settings window displays, showing settings for the current operation mode, normal
or empty room. If the mode you want to program or use is not active, below Operation mode,
select the mode you want.
The mode settings that are visible when you close the window are the settings Select
Ventilation uses.