Damper Failed To Close Alarm; Outdoor Temperature And Humidity Combination Sensor; Figure 47 Adjusting Damper Alarm Delay; Figure 48 Outdoor Air Sensor - Bard FUSION-TEC HR35BPA Service Instructions Manual

Disabling the damper switch in I/O Config disables this
alarm.
NOTE: The damper failed to open/close alarms will still
generate and alarm regardless of model number
configuration.
To adjust the damper failed to open delay:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to System Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Alarm Setup
A4; press ENTER key.
5. Press ENTER key to scroll to Open Delay (see
Figure 47).
6. Press UP or DOWN keys to change to the desired
value.
7. Press ENTER key to save the value.
FIGURE 47
Adjusting Damper Alarm Delay

Damper Failed to Close Alarm

When the controller commands the economizer damper
actuator to the 0% position and the damper switch
indicates the damper is not closed, after a delay of
150 seconds (default timer value) the controller will
generate a damper failed to close alarm. Depending on
alarm configuration, this alarm can be set to notification
only or disable all functions of the unit while setting
the status message on the main screen to "Off by
Alarm". If the condition is remedied, the alarm can
be set to automatically reset and the unit will resume
normal operation, or require manual clearing of the
alarm. If the unit is stuck in this condition, the damper
may be jammed on something or need adjusted, and
mechanical corrective actions will need to be taken.
To learn more about the advanced alarm configuration
of this alarm, refer to the Alarm Adjustment section of
this manual.
Disabling the damper switch in I/O Config disables this
alarm.
NOTE: The damper failed to open/close alarms will still
generate and alarm regardless of model number
configuration.
To adjust the damper failed to close delay:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to System Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Alarm Setup
A4; press ENTER key.
5. Press ENTER key to scroll to Close Delay (see
Figure 47).
6. Press UP or DOWN keys to change to the desired
value.
7. Press ENTER key to save the value.

Outdoor Temperature and Humidity Combination Sensor

The unit is equipped with a combination outdoor
temperature and humidity sensor to monitor
outdoor conditions for the economizer operation.
The temperature is measured with a 10k ohm NTC
thermistor. The humidity is measured with a humidity
sensor that outputs a 4-20mA signal to the controller.
The outdoor temperature can be verified by:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to I/O Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Outdoor Air
Sensor C3; press ENTER key.
5. Reference the Value to see the input of the sensor
(see Figure 48).
6. To apply an offset, press ENTER key to scroll to
Offset.
7. Press UP or DOWN keys to change to the desired
value.
8. Press ENTER key to save the value.
FIGURE 48
Outdoor Air Sensor
Manual 2100-694B
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