Inspect Anode Rod, Annually - Baxi H2O 40 GL Manuel D'installation, D'utilisation Et D'entretien

• Sediment build up, annually except where harsh water quality may require more frequent service. Depending on water conditions, a varying amount of
sediment may collect in the tank. Levels requiring service are indicated by a small temperature difference between the boiler supply and return lines,
and a reduced recovery rate. Repeated flushing usually clears such material. As a preventive measure, water should be drawn from the drain valve
until it runs clear and the installation of a water filter should be considered.
• Annually check for hard water which may cause scale buildup on the outside of the heating coil inside the tank. A water softener will prevent this
problem. Symptoms are identical to sediment buildup. If repeated flushing does not resolve the problem, chemical cleaning may be required. Contact a
qualified contractor.

2. Inspect Anode Rod, Annually

The purpose of the magnesium anode is to reduce the damaging effects of aggressive water on the water heater. Aggressive water will cause the anode(s)
to erode. The anode(S) shall be inspected at least annually to determine whether a new anode should be installed. Severe or rapid deterioration of the
anode indicates very aggressive water. If this occurs, have the water tested to verify whether it is within the limits outlined in Pre-Installation Considerations.
Failure to inspect the anode and replace if necessary could result in damage to the water heater. If this unit is installed and maintained according to the
instructions and conditions in this manual, this product will last for a long time. Refer to Figure 6 for the following procedure.
• Close domestic water isolation valves.
• Drain the water heater completely and allow it to cool.
• Remove the anode cover on the top of the unit.
• After the water heater has drained and cooled, remove the insulation, screws, and washers from the flange.
• Inspect the gasket and replace if necessary.
• Remove the anode and replace if needed. The anode should be replaced when more than 6" of core wire is exposed. Replace the anode with the one
specified in the replacement parts list. Assemble anode, gasket, flange and screws into the assembly.
• Refill the water heater, and restore to operation.
• Verify operation of boiler and water heater.
Figure 6. Anode Rod Inspection
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PN 615000250 REV. B [01/09/2019]