Start-up Checklist Check
Performed gas pressure test by measuring the inlet gas pressure.
□
Tested efficiency of the appliance and made necessary adjustments by Performing a
combustion test and adjustment.
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Tested the low water cutoff function to check that the LWCO sensor is working. See
Testing the LWCO function on page 68.
□
Tested the high limit temperature function to check that the High limit temperature sensor is
working. See Testing the Hi-Limit cutoff temperature function on page 69.
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6.2 Testing the ignition safety shutoff
To test the ignition system safety shutoff function:
1. With the boiler in operation, shut off the gas control valve directly outside the boiler case.
2. Ensure that the boiler has purged, attempted to re-light three times, has shut off and the
appropriate error information is displayed on the controller.
3. The error is displayed after testing the ignition safety shutoff.
4.
To restart the boiler, reset the power or on the touchscreen controller tap > Clear
Errors > Yes.
6.3 Commissioning
The appliances are factory calibrated to operate with natural gas (or propane if desired) at sea level.
The gas-air ratio or zero-offset adjustment screw may need adjusting to attain optimum combustion
results. Note that only qualified technicians using properly functioning and calibrated combustion
analyzing equipment should perform a mixture adjustment.
Section: Boiler operation
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