AERCO BMS II BOILER - Manual (Page 46)

OPERATION
3-14
FAULT ALRM RELAY
This setting tells the BMS II which faults should activate the fault alarm relay. The default is ALL
FAULTS. If NO INTERLOCK is selected, the Fault Alarm Relay will not activate when the interlocks are
opened, however the BMS II will still shut down all boilers. If INTERLOCK 2 is selected, the Fault Alarm
Relay will only activate when Interlock 2 is opened and not when Interlock 1 is opened. Similarly, when
INTERLOCK 1 is selected, the fault alarm relay will only activate when Interlock 1 is opened and not
when Interlock 2 is opened.
FAULT ALARM BLRS
This selection tells the BMS II whether to activate the fault alarm relay if a boiler connected to it is faulted.
FAULT ALRM CLEAR
Selecting MANUAL will latch the fault alarm relay if a fault condition occurs and goes away. The CLEAR
key must be pushed to deactivate the relay. If set to AUTOMATIC, the fault relay will open when the fault
condition goes away.
3.12 CALIBRATION MENU
NOTE
The Level 2 Password (6817) must be entered in order to view or
change options in the Calibration Menu.
The options contained in this Menu should only be used by factory-trained personnel, since it contains
options that could adversely affect system operation if incorrectly set.
HDR SENS OFFSET
This option sets the offset temperature value that is added to the displayed Header Sensor temperature in
the event that it is different from a trusted reference Header temperature reading and needs calibration.
Be sure the Header Sensor is properly installed before adjusting this offset value. The allowable offset
range is ±10°F
OUTD SENS OFFSET
This offset value is added to the Outdoor Sensor temperature displayed in case it is different from a
trusted reference outdoor temperature reading and needs calibration. Be sure the Outdoor sensor is
properly installed before adjusting this value. The allowable offset range is ±10°F.
4 - 20 MA OFFSET
This offset value is added to the 4 – 20 mA Remote signal input to the BMS II in the event that calibration
is needed. The allowable offset range is ±1.0 mA.
RETN SENS OFFSET
This offset value is added to the Return Sensor temperature displayed in case it is different from a trusted
reference return temperature reading and needs calibration. Be sure the Return Sensor is properly
installed before adjusting this value. The allowable offset range is ±10°F