Service Manual

SERVICE PROCEDURE RG-VI

Gas Control

Testing, Disassembly & Replacement (Honeywell)

The Bradford White

DEFENDER

Safety System

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.

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.

THERMOPILE TESTING

See SERVICE PROCEDURE RG-II

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.

ECO (Energy Cut Off) TESTING

Gas Control shown in the “OFF” position

Pressure Tap

Shown Installed