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PDX SERVICE PROCEDURE XI
Anode
Inspection and replacement
Step 1. Position on/off switch of gas control valve to the “OFF” position and unplug water heater from wall
outlet.
Step 2. Turn off cold water supply to water heater. Connect hose to drain valve of water heater and route to an
open drain. Open a nearby hot water faucet to vent water heater for draining. Open drain valve of
water heater and allow water heater to drain to a point below the outlet connection nipple.
Step 3. Disconnect outlet nipple from plumbing system.
Step 4 With an appropriate tool such as a pipe wrench, remove outlet nipple/anode from the water heater. Use
caution not to damage pipe threads.
Step 5. Visually inspect outlet nipple/anode. Outlet nipple/anode should show signs of depletion, this is
normal. If depletion is ½ of the original anode diameter (approximately ¾” diameter), replacement is
recommended. If any of the steel core of the anode is exposed, replacement is recommended.
Step 6. Upon completion of inspection or subsequent replacement, reinstall outlet nipple/anode into water
heater. Connect nipple to plumbing system, resume water supply and refill with water.
Step 7. To resume operation, follow the instructions located on the lighting instruction label or the lighting
instructions located in the installation and operation manual.
Anode Inspection and Replacement
WARNING
Water Heater components and stored water may be HOT when performing the following
steps in this procedure. Take necessary precaution to prevent personal injury.
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PDX Series
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