Rinnai M060C Installation And Operation Manual page 61

3. Remove the vent pump screw.
4. Use a flat head screwdriver to
ensure the impeller spins freely.
5. When the impeller spins freely and water
exits though the vent port, the pump is
ready for operation.
6. Replace the vent pump screw.
7. Proceed to the next step.
Step 2: Set the O2 at Maximum
Input
THIS SECTION IS INTENDED FOR THE
INSTALLER
NOTICE
•
The O2 percentage setting is required to be
checked at commissioning, maintenance
and faults and adjusted if needed.
•
Correct gas supply pressure must be
confirmed before testing O2.
•
The boiler front cover must be in place for
accurate flue gas testing.
WARNING
The O2 percentage is required to be checked
and adjusted after a conversion from Natural
Gas to Liquid Propane, or from Liquid Propane
to Natural Gas. Setting the O2 at maximum
input must be performed with a calibrated
combustion analyzer that is set to the correct
gas type.
1. Put the boiler into operation with a
maximum DHW or heat demand.
2. From the controller home screen, press and
hold the Chimney Active button for
approximately seven seconds.
3. Remove the plug covering the flue gas test
port and place the calibrated combustion
analyzer probe into the port (see right
image).
Rinnai M-Series Condensing Boiler Combi Manual
4. Scroll to ON and press OK.
5. Scroll to 100% and press OK.
6. The boiler is now at maximum input.
7. After the boiler has run for approximately
one minute, the O2 percentages displayed
on the combustion analyzer should match
the ranges shown in the table below.
If the ranges do not match, adjust the
parameters by following the steps in the
Adjust O2 Percentages section.
Table: Nominal O2 Percentages
MAXIMUM
INPUT
Natural Liquid
Model
Gas Propane
M060C 4.7 - 4.9 5.0 - 5.2 0.4-1.6%
M090C 4.2 - 4.4 5.0 - 5.2
M120C 4.2 - 4.4 5.0 - 5.2
M160C 4.2 - 4.4 5.0 - 5.2
MINIMUM INPUT
Natural Liquid
Gas Propane
Higher
Than
Observed 4.7-5.5
on
Maximum
Input
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