Watts AERCO Edge [ii] - Page 137

Edge [ii] Controller Operation Manual
SECTION 6 – ADVANCED SETUP
OMM-139_E • 8/25/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 137 of 196
1. Go to: Main Menu → Advanced Setup → BST Cascade → Operating Controls →
Setpoint Range. The parameters that appear on this screen depend which Application is
chosen in Section 6.3.3: BST Application Configuration, as shown in the table below.
Application = SH (Space Heating) Application = SH+DHW-Stpt Prty
Figure 6.3.4.6: Operating Controls: Setpoint Range Screen
TABLE 6.13: Setpoint Range Parameters
Available Parameters
Applications
SH
DHW
Other
SH+DH
W-2-Vlv
SH+DH
W-1-Vlv
SH+DH
W-Stpt
Prty
Other+SH-
Stpt Prty
Other+DHW
-Stpt Prty
SH Setpt Low Limit
✓
✓
✓
✓
✓
SH Setpt Hi Limit
✓
✓
✓
✓
✓
DHW Setpt Low Limit
✓
✓
✓
✓
✓
DHW Setpt Hi Limit
✓
✓
✓
✓
✓
Other Setpt Low Limit
✓
✓
✓
Other Setpt Hi Limit
✓
✓
✓
Other SH PRI Setpt Low Limit
✓
✓
Other SH PRI Setpt Hi Limit
✓
✓
Other DHW PRI Setpt Low Limit
✓
✓
Other DHW PRI Setpt Hi Limit
✓
✓
Setpoint Limiting
✓
✓
✓
✓
✓
✓
✓
✓
Setpoint Limit Band
✓
✓
✓
✓
✓
✓
✓
✓
Setback Schedule
✓
✓
✓
✓
✓
✓
✓
✓
Setback Setpoint
✓
✓
✓
✓
✓
✓
✓
✓
Setback Start Time
✓
✓
✓
✓
✓
✓
✓
✓
Setback Stop Time
✓
✓
✓
✓
✓
✓
✓
✓
2. Configure the Setpt Low Limit and Setpt High Limit parameters. Together these two
parameters determine the temperature range within which the setpoint for the chosen
Application can vary. (Range: 60°F to 245°F)
3. Set the Setpoint Limiting parameter to Enabled to Disabled. If Enabled, this feature
acts as a temperature limiting governor. Should a unit’s outlet temperature equal Setpoint
High Limit, a PID function will intervene and maintain the outlet temperature at the Setpoint
High Limit minus the Setpoint Limit Band. If Enabled, the following parameter appears: