Service Manual

Anode inspection and replacement

Step 1. Position main power switch to “OFF”

Step 2. Disconnect (unplug) water heater from 120

volt power source.

Step 3. Turn off water supply and

drain water heater.

Step 4. Locate (see photo below) and remove anode rods from heater (1-1/16 hex socket). U65L has 3 anodes (2

front and 1

side) and U100L 5 anodes (3 front and 2 side).

Step 5. Visually inspect anode rod. Anode rod should show signs of depletion,

this is normal. If

the depletion is ½ of the original diameter (approximately ¾" diameter), replacement is

recommended. If any of the s

teel core of the anode is exposed, replacement is

recommended.

Step 6. Upon completion of inspection or subsequent replacement, apply thread sea

ling tape or other

thread compound to threads of anode and reinstall into heater. Restore water supply

and check for and repair any leaks found.

Ste

p 7. Restore 120 volts to water heater and verify proper heater operation following the

instructions on the lighting instruction label or the l

ighting instruction located in the

installation and operating instruction manual.

WARNING

Heater components and stored water may be HOT when performing the following steps in

this procedure. Take necessary precaution to prevent personal injury.

Front of water heater.

Anodes located under

plastic covers between

inlet and outlet water

connections.

Side of water heater. Anodes

located under plastic covers

behind the circulator assembly.

Circulator will need to be

disconnected to get to anodes

locations. R

efer to circulator

assembly replacement procedure.