Maintenance Procedures
Check Boiler Relief Valve
Inspect the relief valve and lift the lever to verify flow at least annually or as recom- mended on the warning tag of the valve.
WARNING
Before manually operating the pressure relief valve ensure the discharge piping is directed to a suitable place of disposal to avoid a potential scald hazard. The dis- charge piping must be full size without restriction and installed to permit com- plete drainage of both the valve and line.
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
Check Temperature / Pressure Relief Valve
Inspect the T&P relief valve and lift the lever to verify flow at least annually or as recommended on the warning tag of the valve.
WARNING
Before manually operating the pressure relief valve ensure the discharge piping is directed to a suitable place of disposal to avoid a potential scald hazard. The dis- charge piping must be full size without restriction and installed to permit com- plete drainage of both the valve and line.
If after closing the valve, the valve fails to seat properly or continually weeps, replace the relief valve. Ensure the cause of the weeping is the valve itself, not due to ther- mal expansion or a faulty or
Inspection of Ignition Electrode
Remove the ignition electrode from the burner mounting plate.
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 ignitor.
When replacing the ignition electrode, ensure the gasket is in good condition and correctly positioned.
Check Ignition Wiring and Ground Wiring
Inspect the burner wiring from the burner control module to the ground terminal behind the control panel.
Ensure wiring is in good condition and securely connected.
Check ground continuity of the wiring using a continuity meter.
Replace and correct ground wire if ground continuity is not completed and satisfactory.
Check Control Wiring
Inspect all control wiring located behind the control panel and at the burner control module. Ensure wiring is in good condi- tion and properly connected.
Check Thermostat Limit Settings
Check the position of the Secondary and Primary Thermostat knobs, refer to Figure 38 and 39 page 54 for recommended settings.
Perform Start-up and Checkout Procedures
Start the unit and perform the
Verify the cold water fill pressure is correct and the operating pressure of the primary system is within normal operating range.
Complete the checkout procedures as refer- enced in this manual.
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