Watts AERCO Edge [ii] - Page 64

Edge [ii] Controller Operation Manual
SECTION 3: CALIBRATION
OMM-139_E • 8/25/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 64 of 196
10. The system now starts combustion calibration, starting at the 100% valve position.
Figure 3.1-4: Assisted Combustion: Combustion Calibration In Progress Screen
11. Once the O
2
level has been finalized for a given valve position, the Calibration Data
Recording screen appears. Enter values in the NOx, CO and Flame Strength fields from
the multimeter. Press Next to continue.
Figure 3.1-5: Assisted Combustion: Calibration Data Recording Screen
Note the following:
• Valid NOx range is defined by the NOx requirement chosen in Step 6.
• Valid CO range is between 1 and 300 ppm
• Valid Flame Strength is ≥2 µA
• You can move to the next valve position if the NOx and/or Flame Strength values
entered are out of range, however a message will appear alerting you to that condition,
such as Flame Strength too low.
• You cannot proceed if the CO value is out of range. A message will appear saying
Invalid CO value. Abort and manually calibrate to reduce CO.
• When transitioning from one valve position to the next, the In-Progress screen (Figure
3.1-4) is displayed showing the O
2
levels and blower voltage for all previously
completed valve positions.
• If there are any problems during the assisted calibration, a screen may appear
requesting a user action.
12. After pressing Next, the system begins calibrating the next valve position. Repeat the
previous step at the new Valve Position for this and all other Valve Positions.
13. After completing the last Valve Position, the Combustion Calibration Complete screen
appears. See Section 2.4 for instructions on accessing this screen.