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.