GF-135
Esteem 399 Low NOx Boiler
Chapter 17
OMM-0089_0A
Installation, Operation & Maintenance Manual Maint. Procedures
Page
112
of
188
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0089_0A
MC1 06/19/14
Ph.: 800-526-0288
If after closing the valve, the valve fails to seat properly or continually weeps, replace the relief
valve. Ensure the cause of the relief valve to weep is the valve itself, not due to system over-
pressurization caused by an expansion tank that is waterlogged or undersized.
17.11 IGNITION ELECTRODE INSPECTION
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Remove the ignition electrode from the burner mounting plate.
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Remove any white oxides accumulated on the electrode using fine grit sandpaper or steel
wool. If the electrode does not clean to a satisfactory condition, replace the igniter
•
When replacing the ignition electrode, ensure the gasket is in good condition and
correctly positioned, replace gasket if necessary.
17.12 IGNITION WIRING AND GROUND WIRING INSPECTION
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Inspect the ignition cable from the igniter to the controller module.
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Inspect the ground wire from the igniter to the boiler jacket ground terminals.
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Ensure wiring is in good condition and securely connected.
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Check ground continuity of the wiring to the boiler jacket or piping using a continuity
meter.
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Replace and correct ground wire if ground continuity is not completed and satisfactory.
17.13 CONTROL WIRING INSPECTION
Inspect all control wiring. Ensure wiring is in good condition and properly connected.
17.14 CONTROL SETTINGS INSPECTION
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Review all boiler settings in the Heating & DHW EZ Setup menus. Adjust settings as
necessary. See sections 10.6 and 10.7 and associated sub-sections.
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Check any external limit control settings (if used). Adjust settings as necessary.
17.15 PERFORM START-UP AND CHECKOUT PROCEDURES
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Start the unit and perform the start-up procedure as listed in this manual.
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Verify the cold water fill pressure is correct and the operating pressure of the boiler is
within normal operating range.
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Complete the checkout procedures as referenced in this manual.
