Watts AERCO Edge [ii] - Page 176

Edge [ii] Controller Operation Manual
SECTION 7 – UNIT STATUS
OMM-139_E • 8/25/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 176 of 196
• The Fire Rate area displays the current fire rate for each Application in the cascade:
SH, DHW and/or Other. The BST Manager unit will drive all ignited boilers at the fire
rate specified for each Application.
• SH Setpoint, DHW Setpoint and/or Other Setpoint displays the current Active
Setpoint for each Application in the cascade.
• Supply displays the current Header Temperature of the BST cascade for each
Application in the cascade.
• Units Online displays the total number of units actively connected to the BST
“Manager” unit via the BST Modbus Network. This includes units that have Faulted and
stopped communicating with the Manager.
• Units Available displays the total number of connected units either ON, being Ignited
or in Standby Mode waiting to be Ignited.
• Units Firing displays the total number of units currently Ignited in the BST System.
• The BST Status line displays the current state of the BST system as follows:
• Failsafe Mode Active
• One Boiler Mode
• BST In Deadband
• BST In Control
• All Boilers are Off
• Igniting First Boiler
• Boiler Ignited
• Igniting Next Boiler
• Raise Fire Rate
• All Boilers are On-Raise FR
• Lower Fire Rate
• BST is On Temperature
• All Boilers are On at MAX FR
• BST Overtemp
• BST Remote Signal Fault
• BST in Failsafe Mode
On the BST Cascade Status screen (Figure 7.4-1, above), if you press on any unit, the BST
Unit Status screen appears, showing the details of that particular unit. From here, you can
navigate to the status screens of all the other units in the cascade using the Left and Right
arrows.
Figure 7.4-2: BST Unit Status Screen