Line Pressure; Manifold Pressure Testing; Electronic Gas Control Testing, Disassembly, And Replacement; Rg-Vi - Bradford White Defender RG130T Series Service Manual

LINE PRESSURE

The gas valve is designed for a maximum line pressure of 14.0" W.C., and a minimum
line pressure based on the manifold pressure plus 1.0" W.C. (check rating plate for rated
manifold pressure). Line pressure must be checked with burner on and burner off to
assure proper readings.

MANIFOLD PRESSURE TESTING

(This procedure presumes a maximum line pressure of 14.0" W.C.)
Set the gas control to the "OFF" position.
Step 1.
Remove pressure tap plug (3/16" allen wrench) and install 1/8"
Step 2.
NPT pipe, coupling, and pressure tap.
Connect manometer to pressure tap.
Step 3.
Follow instructions located on the lighting instructions
Step 4.
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 L.P. gas is:
10.0" ±0.5" W.C.
a) 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.
b) If gas pressure is outside the specification noted above,
refer to the following Honeywell ONLY information, or
"Gas Control Replacement" to replace gas control or
valve body.
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 OFF) 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 RG-VI
Gas Control Testing, Disassembly, & R eplacement
(White Rodgers Electronic & Honeywell)
3/16" allen wrench
Pressure tap
shown installed
25
Gas controls
shown in the
"OFF" position
25