Installation / Operation Instruction Manual

Maintenance continued-

4. To inspect or replace an anode:

The anodes on this water heater are easily accessible from the

top of the heater making replacement simple and quick.

a. Turn the water heater electricity off for the zone

containing the indirect-fired water heater. Flow water

until the discharge is cool or allow enough time for the

potable water to cool naturally. Connect a hose to the

drain valve. Locate the hose’s discharge in an area

where any remaining hot water will not cause any

damage or injury.

b. Open the drain valve to flush any sediment out of the

bottom to the heater.

c. Shut off the cold water supply. Make sure all hot water

fixtures and circulating pumps are turned off.

d. Wait for water flow from the hose to stop. Remove the

anode using a socket of the appropriate size. Do not use

an impact wrench.

e. Inspect and replace the anode as required. Use pipe

tape or sealant when reinstalling the anode.

f. Close the drain valve. Open a hot water fixture to allow

air to escape. Open the cold water supply to the heater

and allow the tank to fill.

g. Check your anode and drain valve for leaks.

h. Turn the water heater electricity on for the zone

containing the indirect-fired water heater.

5. Sediment (Annual, but harsh water quality may dictate

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 in the supply and return lines (See also “Scale”

below). Repeated flushing usually clears such material. As a

preventive measure, water should be drawn from the tank at

the drain valve until it runs clear.

6. Scale (Annual)- Hard water may cause scale to build-up on

the outside of the heat exchanger coil. A water softener will

prevent this problem (See also “Sediment” above). Symptoms

would be reduced recovery capacity or reduced temperature

differential between boiler supply and return lines. Repeated

flushing should resolve the problem.