FloAire Demand Control Ventilation System - Manual (Page 22)

A0023662
May 2014 Rev.5
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7. Set 0-10VDC output (Factory Default: Exhaust CFM Ratio):
In addition to each variable frequency drive (VFD) in the DCV system providing a 0-10 VDC
analog output from its terminals 30 and 2 directly proportional to its Fan Speed Ratio (Fan
Frequency / Fan High Frequency), the ECPM03 also offers a 0-10VDC output from terminals VO-
and VO+. This output can be configured depending on the type of signal needed by the building
management system or the equipment receiving it.
Three (3) types of signal are available:
- Total Exhaust CFM Ratio = Total Operating Exh CFM / Total Design Exh CFM
- Total Supply CFM Ratio = Total Operating Sup CFM / Total Design Sup CFM
- Total Transfer CFM Ratio = Total Operating Transfer CFM / Total Design Transfer CFM
Total Exhaust CFM Ratio could be sent to a Roof Top Unit providing make-up air to the hood.
Total Transfer CFM Ratio could be sent to a HVAC unit indicating how much transfer air is
needed for the kitchen. This selection takes in consideration the Preparation Time Mode where
the same amount of transfer air is used as when the fans are all running at maximum speed.
Total Supply CFM Ratio is only available if a Supply fan is present in the DCV system. In
Preparation Time, Total Supply CFM Ratio would be 0.
Starting from the Main menu of HMI, p
ress DOWN or UP until the screen displays “Misc Options”.
Press ENTER. Press UP or DOWN until the screen displays “0-10VDC output”. Press UP or
DOWN to set the option needed. Press ENTER.
Press MENU multiple times to get back to the main menu or one more time to reboot the
processor.
8. Fan Proving Interlock: Proving Percentage (factory default 80%)
If the Fan Proving Interlock option is enabled, the Proving Percentage setting is available.
Its value can range between 50% and 100%. The greater the ratio, the tighter the limits will be for
fault detection, which also means the greater likelihood of false positive.
Starting from the Main menu of HMI, press DOWN
or UP until the screen displays “Misc Options”.
Press ENTER. Press UP or DOWN until the screen displays “Set Proving Percent”. Press
ENTER. Press UP or DOWN to adjust the ratio value. Press ENTER. Press MENU multiple times
to get back to the main menu or one more time to reboot the processor.
9. Adjust Wash Time (Min) (Factory Default: 3 min):
This option is available if the control system includes self-cleaning option from the factory. The
wash time value is setup in minutes with a maximum value of 30 minutes.
Starting from the Main menu of HMI
, press DOWN or UP until the screen displays “Misc Options”.
Press ENTER. Press UP or DOWN until the screen displays “Set Wash Time”. Press ENTER.
Press UP or DOWN to adjust the time value. Press ENTER
Press MENU multiple times to get back to the main menu or one more time to reboot the
processor.
10. Adjust Wash Frequency (Hz) (Factory Default: 15 Hz):
This option is available if the control system includes self-cleaning option from the factory. This
value is the frequency at which all exhaust fans will run in wash mode. The Supply fan will be
stopped during Wash.
Starting from the Main menu of HMI
, press DOWN or UP until the screen displays “Misc Options”.
Press ENTER. Press UP or DOWN until the screen displays “Set Wash Frequency”. Press
ENTER. Press UP or DOWN to adjust the frequency value. Press ENTER
Press MENU multiple times to get back to the main menu or one more time to reboot the
processor.