User Guide

SERVICE PROCEDURE RG-VI

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.

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