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C - Combustion Setup (High-Fire)
• Unscrew exhaust port plug at exhaust flue test port. See
Figure 6.
• Insert combustion analyzer into exhaust flue test port.
Verify opening around combustion analyzer probe is
completely sealed when taking measurements.
• Set boiler to high-fire by pressing two buttons
simultaneously. Display will show H3 and the
will appear.
• Measure percentage of O
• Compare the measured values with values in table below.
Remove front panel when comparing values.
• Adjust gas/air ratio using high-fire adjustment screw (V)
if needed. Turn screw clockwise to reduce CO
counterclockwise to increase it.
O
/CO
Values at High Fire Natural Gas
2
2
Nominal value
O
%
CO
%
2
2
4.3
9.3
D - Combustion Setup (Low-Fire)
• Unscrew exhaust port plug at exhaust flue test port.
• Insert combustion analyzer into exhaust flue test port.
Verify the opening around combustion analyzer probe is
completely sealed when taking measurements.
• Set boiler to low-fire by pressing two buttons
simultaneously. If the boiler is already in combustion setup
mode for high fire, press the (-) button several time until
L3 is displayed on the screen.
• Measure percentage of O
• Compare the measured values with values in table below.
Remove front panel when comparing values.
• Adjust gas/air ratio using low-fire adjustment screw (K)
if needed. Turn screw clockwise to increase CO
counterclockwise to decrease it.
O
/CO
Values at Low-Fire Natural Gas
2
2
Nominal value
O
%
CO
%
2
2
5.7
8.5
38.
Follow instructions in boiler's Installation, Operation &
Maintenance Manual for proper startup and verification
procedures.
39.
Verify proper operation.
HEAT EXCHANGER CLEANING INSTRUCTIONS
symbol
or CO
in flue gases.
2
2
level and
2
Permitted value
O
%
CO
%
2
2
3.9 - 4.7
9.1 - 9.5
or CO
in flue gases.
2
2
level and
2
Permitted value
O
%
CO
%
2
2
5.4 - 6.1
8.3 - 8.7
O
/CO
Values at High-Fire Propane Gas
2
2
Nominal value
0
%
CO
%
2
2
5.7
10.0
O
/CO
Values at Low-Fire Propane Gas
2
2
Nominal value
0
%
CO
%
2
2
6.4
9.6
5
V
Permitted value
0
%
CO
%
2
2
5.4 - 6.0
9.8 - 10.2
K
K - Screw cover shown.
Adjustment screw is
located under cover.
Permitted value
0
%
CO
%
2
2
6.1 - 6.70
9.4 - 9.8
P/N 240011775 Rev. A [02/02/17]
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Table of Contents
Troubleshooting
