Bradford-White Corp CX, D)W275T*(BN Service Procedure AG-V, Diptube Inspection and Replacement

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SERVICE PROCEDURE AG-V

Diptube and Anode

Inspection and Replacement

R

DIPTUBE 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.

Step 1. Turn the gas control knob to the “OFF” position.

For White Rodgers Control,

 

 

depress knob slightly and

 

 

rotate clockwise to the “OFF”

 

For Honeywell gas

position.

 

 

control, rotate knob

 

 

 

 

counter clockwise to the

 

Figure 46

“OFF” position.

 

 

For Robertshaw Control,

 

 

rotate knob clockwise to the

 

 

“OFF” position.

 

 

Figure 47

 

Figure 48

Step 2. Turn off cold water supply to water heater. Connect hose to drain spigot of water heater and route to a suitable drain. Open a nearby hot water faucet to vent water heater for draining. Open drain spigot of water heater and allow to drain.

Step 3. Disconnect plumbing system from inlet nipple/diptube.

Step 4. With an appropriate wrench, remove inlet nipple/diptube from the water heater. Use caution not to damage the nipple threads.

Step 5. Visually inspect inlet nipple/diptube. Inlet nipple/diptube should be free of cracks and any blockage. The small curved openings should be open and free of any blockage.

Anti-siphon hole located approximately 6" from the bottom of nipple, should be 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/diptube into water heater. Reconnect plumbing system to inlet nipple/diptube, resume cold water supply and check for leaks.

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.

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Contents Service Manual Table of Contents Troubleshooting Chart LED Status Control Status Probable Cause LED Status Control Status Probable Cause Service Procedure Thermocouple Replacement Service Procedure AG-IOpen Circuit Thermocouple Testing A Closed Circuit test Open Circuit Thermopile TestingClosed Circuit Thermopile Testing An Open Circuit testThermopile Replacement Step Turn off gas supply to water heater. Rotate knob Pilot Assembly Inspection Cleaning and Replacement IGNITER/ELECTRODE Testing Replacement Line Pressure Service Procedure AG-IIIGas Control Testing and Replacement Magnet Assembly Testing Robertshaw Control Thermocouple TestingMagnet Assembly Testing White Rodgers Control GAS Control Replacement ECO Energy Cut Off TestingInstallation of gas control Honeywell Thermowell Testing Determine Water Heater Tank Temperature Honeywell GAS Control Removal from Thermowell Honeywell GAS Control & Thermowell RemovalHoneywell GAS Control Assembly to Thermalwell Cast Iron Burner Adjustment Service Procedure AG-IVBurner Cleaning Steel & Cast Iron Burner Cleaning Diptube Inspection and Replacement Service Procedure AG-VTurn gas control knob to OFF position Anode Inspection and ReplacementPage Page