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DV Series
Line Pressure
The gas control is designed for a maximum line pressure of 14.0" W.C.
and a minimum line pressure of the water heater's rated manifold
pressure plus 1.0" W.C. (check rating plate). Line pressure must be
checked with the main burner on AND off to assure proper readings.
Manifold Pressure Testing
(This procedure presumes a maximum
line pressure of 14.0" W.C.)
Step 1. Position the gas control knob in the "OFF" position.
Step 2. Remove the pressure tap plug (3/16" allen wrench) and
install a 1/8" NPT pipe, coupling, and pressure tap.
Step 3. Connect a manometer to the pressure tap.
Step 4. Follow instructions located on the lighting
instruction label and proceed to light the main
burner. Observe the manometer readings.
Step 5. Proper operating range for natural gas is 4.0"
±0.5" W.C.; L.P. is 10.0" ±0.5" W.C..
a. If pressure is within the range specified in
the previous step, set the gas control knob to
the "OFF" position, remove manometer and
pressure tap, and replace pressure tap plug.
b. If the gas pressure is outside of the
specification noted above, refer to the
following Honeywell ONLY instructions or
"Gas Control Removal from Water Heater."
Step 6. The manifold pressure is NOT adjustable. If
manifold pressure is outside of the range in
Step 5, the control must be replaced.
ECO (Energy Cut Out) Testing
The Honeywell and White Rodgers Electronic gas
control is designed with an ECO device that will reset.
To reset the gas control after a status code 4, turn the
gas control knob to the "OFF" position and wait a
minimum of five (5) minutes before relighting, following
the instructions located on the lighting instruction label
or the lighting instructions located in the Installation and
Operation Manual.
Service Procedure IV
Gas Control Testing and
White Rodgers
Mechanical
19
Replacement
19
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