Installation / Operation Instruction Manual

51
Maintenance Schedule continued-
Powered Anode System
All models are equipped with a powered anode system. The powered anode system provides corrosion protection to the
tank by supplying a low voltage current to the titanium anode rods and then periodically comparing this current with the
potential between the anode rod and tank wall to make corrections. The powered anode system is designed to extend
the tank life without requiring anode rod replacement. The powered anode system consists of two titanium powered
anode rods (31 7/8 in (81 cm) long), located in the front top of the water heater tank, and the powered anode control
module located on the right side of the control panel. In addition, there is one additional magnesium anode rod (non-
powered) located under the top flue collector for additional back-up protection.
The powered anode rod must have the electrical power supply connected at all times in order to provide corrosion
protection to the water heater tank. If the electrical supply to the water heater is to be off for an extended period of time,
the water heater must be drained. Turning off the lighted switch on the front panel to shut off the water heater will not
turn off the powered anode system, as long as the line cord is plugged in and the breaker is left on.
The powered anode control module is located on the right vertical side of the control panel inside the surround panel.
The control has a LED indicator light to show the status of operation. When the tank is filled with water and the power
supply is on to the water heater, the light should have a steady green glow to indicate that protection current is flowing
and operating normally. If the indicator light is not glowing, the power supply to the water heater or powered anode
system is disconnected. Check the power supply or wire connections to the powered anode control.
If the control is flashing red, then there is a malfunction with the powered anode system. Make sure there are no bare
spots in the wire insulation to the powered anode rods. Check all electrical connections. The powered anode rods are
insulated from the water heater tank in the bushing. With an ohmmeter, check continuity between the powered anode
terminal and the bushing. There should not be continuity. If there is continuity, replace the powered anode assembly.
Figure 32 - Powered Anode Locations
Drain Valve and Tank Access Panel
The water heaters are equipped with a 3/4 in drain valve.
An access panel covers the cleanout opening in the tank, which is sealed by a gasket and cover.