Anode Inspection & Replacement - Bradford White UPV Series Service Manual

Ultra low nox through-the-wall gas water heaters
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UPV Service Procedure XII – Anode Inspection and Replacement
Anode Inspection and Replacement
Water heater components and stored water may be HOT when
performing the following steps in this procedure. Take necessary
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. Ensure pipe dope is used on the nipple's threads. 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.
32
WARNING
precaution to prevent personal injury.
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