FloAire Demand Control Ventilation System - Manual (Page 18)

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May 2014 Rev.5
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Shunt Trip Follow Fans (Optional)
If this option is ON, the shunt trip will be energized whenever the fans are off. This is meant to prevent
electric cooking appliances from running when the fans are off and is only required in some jurisdictions.
This option can be enabled under Configuration/Misc Options/Shunt trip Follow Fans. Factory Default
Setting is OFF.
Dimmable HMI (Optional)
This option allows the backlight on all HMIs to turn off whenever a timer is satisfied. The timer is refreshed
every time the HMI button is pressed. This option is factory set to be disabled, and can be enabled under
Configuration/Misc Options/ Set HMI Dimming.
CO Censor Input (Optional)
If a CO Sensor is wired to the DCV and the CO sensor is triggered, all exhaust fans will be turned ON and
will ramp up to their high speed. All supply fans will be turned OFF, the gas valve will be shut off, and the
shunt trip will be energized. This option is only accessible through terminal IO1. Terminal IO1 should be
energized by closing a dry contact placed between terminals H1 and IO1, also CO sensor should be
enabled; otherwise, the IO1 terminal will function as BMS input. Factory Default Setting is OFF.
PCU CORE ONLY (Optional)
This option can only be enabled if CORE Hood is disabled. If this option is enabled, all the faults
occurring on a connected PCU CORE system will be displayed on the HMI. A cat5 cable will be needed
to connect the PCU CORE to the slave side of the network, typically J3. Factory Default Setting is OFF.
Energy Saving Graph (optional)
The % Savings graph on the HMI provides information on how much fan energy is saved by the system
when running the fans at lower speed. It is calculated based on the actual Kilowatts measured from each
Variable Frequency Drive controlling the fans. However,
it doesn’t include the additional savings resulting
from the lower CFM of Make-up air and HVAC air that require heating or cooling. This option is factory set
to be enabled, and can be disabled under Configuration/Misc Options/Hide Energy Savings.