Bradford White TW4-75S-76B-3X - Manual (Page 31)

TTW SERVICE PROCEDURE X
Dip Tube
Inspection and replacement
Step 1. Position on/off switch of gas control valve to “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 heater for draining. Open drain valve of water
heater and allow heater to drain to a point below the inlet connection nipple.
Step 3. Disconnect inlet nipple from plumbing system.
Step 4 With an appropriate tool such as a pipe wrench, remove inlet nipple/dip tube from the water heater.
Use caution not to damage pipe threads.
Step 5. Visually inspect inlet nipple/dip tube. Inlet nipple/dip tube 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/dip tube must be replaced.
Step 6. Upon completion of inspection or subsequent replacement, reinstall inlet nipple/dip tube 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.
Dip Tube 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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