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UDV Series
Diptube Inspection & Replacement
Water Heater components and stored water may be HOT when performing the
following steps in this procedure. Take necessary precaution to prevent
personal injury.
Step 1. Position the gas control knob in the "OFF" position.
Step 2. Turn off the cold-water supply to the water heater.
Step 3. Connect a hose to the drain valve of the water heater and route to an open
drain.
Step 4. Open a nearby hot water faucet to vent the water heater for draining.
Step 5. Open the drain valve of the water heater and allow the heater to drain to a point
below the inlet connection nipple.
Step 6. Disconnect the inlet nipple from the plumbing system.
Step 7. With an appropriate tool such as a pipe wrench, remove the inlet nipple/diptube
from the water heater. Use caution not to damage any pipe threads.
Step 8. Visually inspect the inlet nipple/diptube. The inlet nipple/diptube should be free
of cracks and any blockage. Hydro jet slots should be open and free of any
blockage. Any damage such as cracks, restriction due to deformation or
unintentional holes are not field repairable and the inlet nipple/diptube must be
replaced.
Step 9. Upon completion of inspection or subsequent replacement, re-install the inlet
nipple/diptube into the water heater. Ensure pipe dope is used on the nipple's
threads. Connect the nipple/diptube to the plumbing system and resume the
water supply to refill with water.
Step 10.To resume operation, follow the instructions located on the lighting instruction
label or the lighting instructions located in the installation and operation manual.
UDV SERVICE PROCEDURE VII
Diptube Inspection and Replacement
WARNING
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