FloAire Electrical Controls - Manual (Page 14)

A0023032
August 2014 Rev. 7
14
Fan Proving Interlock (Optional) (i.e. Loss of Load Interlock/Airflow Fault
Interlock)
1. This function is only available if there is a supply fan in the system and the panel was ordered
from the factory with current sensors.
2. This function is designed to prevent exhaust fans from running if the supply fans are not running,
which in turn would shut off the cooking equipment. In practical terms, this means that all fans will
shut off along with cooking equipment if any of the exhaust or supply fans are not properly
running. Examples of reasons why a fan would not be properly running are: overload tripped,
broken fan belt, defective motor, disconnect switch off, etc.
3. This function requires calibration, which can be performed through the Configuration/Misc
Options/Proving Calibration setting on the ECPM03 LCD.
4. When fans initially start, the supply fan(s) will be energized first, the motorized damper(s) (if
present) will open. Once open the supply blower(s) will start running which in turn will allow the
exhaust fans to run. If a supply blower doesn’t run within 90 sec, a proving fault will occur.
5. Once the fans are running, the load on all the exhaust and supply fans is constantly monitored. If
the load for an exhaust fan or the load for a supply fan drops below the threshold calculated after
calibration for more than the 15 sec, all exhaust and supply fans will shut down.
6. If an electric gas valve and shunt trip are attached to the system, they will shut down as well.
7. To reset the system after a Proving fault, press the Fault Reset button on the HMI.
CORE Fire Protection System (Optional)
1. If a CORE Protection Fire system is connected to the control panel, alarms from the CORE
system will automatically be displayed on the HMI.
2. Multiple CORE systems can be connected to the same control panel. Refer to the CORE Manual
for setup of CORE Interlock Network addressing to prevent communication conflicts.
PCU Advanced Filter Monitoring (AFM) (Optional)
a If a PCU AFM is connected to the control panel through Modbus, alarms from the PCU will
automatically be displayed on the HMI.
b To connect the AFM system to the HMI, run a cat-5 connection from terminal J3 to the RJ45 port
on the PCU AFM internal to the PCU. This is outlined in the installation schematics.
c Up to 8 PCU AFM can be connected to the same Control panel. . Note that each additional PCU
AFM must be assigned a unique Modbus address. Refer to PCU AFM manual for more
information.
Electric Gas Valve Follow Fans (optional)
This option is only available when an electric gas valve is enabled. If this option is ON, the gas valve is
shut off whenever the fans are off and requires a reset when the fans are turned ON. This is meant to
prevent gas 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/Gas Follow Fans. NOTE: Pilot
lights must be relit after each fan cycle when this option is enabled.
Shunt Trip Follow Fans (Optional)
If this option is ON, the shut 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.
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.