Combustion Oxygen Level At 80% Valve Position; Combustion Oxygen Level At 60% Valve Position - Aerco Benchmark 2.0 Installation, Operation & Maintenance Instructions Manual

INITIAL START-UP
16. Press the MENU Key on the front panel of
the C-MORE and access the Setup menu.
Enter password 6817 and then press the
ENTER key.
17. Press the MENU Key on the front panel of
the C-MORE until Combustion Cal Menu
appears on the C-More display.
18. Press the ▲ arrow key until SET Valve
Position appears on the C-MORE display.
19. Press the CHANGE key. SET Valve will
begin to flash.
20. Press the ▲ arrow key until the SET Valve
Position reads 80%. Press the ENTER key.
21. Next, press the down (▼) arrow key until
CAL Voltage 80% is displayed.
22. Press the CHANGE key and observe that
CAL Voltage 80% is flashing.
23. The oxygen level at the 80% valve position
should be as shown below. Also, ensure that
the carbon monoxide (CO) and nitrogen
oxide (NOx) readings do not exceed the
values shown.
Combustion Oxygen Level at
80% Valve Position
Oxygen % Carbon
± 0.2 Monoxide
5.0 % <100 ppm
24. If the oxygen level is not within the specified
range, adjust the level using the ▲ and ▼
arrow keys. This will adjust the output
voltage to the blower motor as indicated on
the display. Pressing the ▲ arrow key
increases the oxygen level and pressing the
down ▼ arrow key decreases the oxygen
level.
25. Once the oxygen level is within the specified
range at 80%, press the ENTER key to store
the selected blower output voltage for 80%
valve position.
NOTE
The remaining steps basically repeat the
procedures in steps 18 through 25 for
valve positions of 60%, 45%, 30% and
16%. However, since oxygen levels vary,
these steps are repeated in their entirety.
When performing
ensure that the carbon monoxide (CO)
and nitrogen oxide (NOx) readings do not
exceed the values shown for each valve
position.
4-4
NOx
<30 ppm
these steps, also
26. Press the ▲ arrow key until SET Valve
Position appears on the C-MORE display.
27. Press the CHANGE key. SET Valve Position
will begin to flash.
28. Press the ▼ arrow key until the SET Valve
Position reads 60% and press the ENTER
key.
29. Press the down ▼ arrow key until CAL
Voltage 60% is displayed.
30. Press the CHANGE key. CAL Voltage 60%
will begin to flash.
31. The oxygen level at the 60% valve position
should be as shown below. Also, ensure that
the carbon monoxide (CO) and nitrogen
oxide (NOx) readings do not exceed the
values shown.
Combustion Oxygen Level at
60% Valve Position
Oxygen % Carbon
± 0.2 Monoxide
5.7 % <50 ppm
32. If the oxygen level is not within the specified
range, adjust the level using the ▲ and ▼
arrow keys. This will adjust the output
voltage to the blower motor as indicated on
the display. Pressing the ▲ arrow key
increases the oxygen level and pressing the
▼ arrow key decreases the oxygen level.
33. Once the oxygen level is within the specified
range at 60%, press the ENTER key to store
the selected blower output voltage for 60%
valve position.
34. Press the ▲ arrow key until SET Valve
Position appears on the C-MORE display.
35. Press the CHANGE key. SET Valve Position
will begin to flash.
36. Press the ▼ arrow key until the SET Valve
Position reads 45%, then press the ENTER
key.
37. Press the ▼ arrow key until CAL Voltage
45% is displayed.
38. Press the CHANGE key. CAL Voltage 45%
will begin to flash.
39. The oxygen level at the 45% valve position
should be as shown below. Also, ensure that
the carbon monoxide (CO) and nitrogen
oxide (NOx) readings do not exceed the
values shown.
NOx
<30 ppm