The Bradford White
DEFENDER
Safety System®
SERVICE PROCEDURE
Gas Control
Testing, Disassembly & Replacement (Honeywell)
MANIFOLD PRESSURE TESTING (this procedure presumes a maximum line pressure of 14.0" w.c.)
Step 1. Set the Gas Control to the “OFF” position.
Step 2. Remove pressure tap plug and install 1/8" NPT pipe, coupling, & pressure tap.
Gas Control shown in the “OFF” position
Step 3. Connect manometer to pressure tap.
Step 4. Follow instructions located on the lighting instructions label and proceed to light the main burner and observe manometer reading.
Step 5. Proper operating range for natural gas is: 4.0" ±0.5" w.c.
Proper operating range for LP gas is: 10.0" ±0.5" w.c.
Step 6. If pressure is within the range specified in the previous step, set Gas Control knob to the “OFF” position, remove manometer and pressure tap, and replace pressure tap plug. Check for gas leaks prior to placing water heater back into operation by following the instructions located on the lighting instruction label or the lighting instructions located in the installation and operation manual.
Step 7. If gas pressure is outside the specification noted above, refer to “Honeywell Gas Control Testing, Disassembly, and Replacement” to replace Gas Control or valve body.
Pressure Tap
Shown Installed
THERMOPILE TESTING
See SERVICE PROCEDURE
ECO (Energy Cut Off) TESTING
The Honeywell Gas Control is designed with an ECO device that will reset.
To reset the Gas Control after an error code (4), turn the Gas Control knob to the “OFF” position and wait a minimum of (5) minutes before relighting following the instructions located on the lighting instruction label or the lighting instructions located in the installation and operation manual.
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