Bradford White URG130T*N Series, Руководство по обслуживанию

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11
ECO Defender Series
11
Line Pressure
The gas control is designed for a maximum
line pressure of 14.0” w.c. and a minimum
line pressure of 1.0” w.c. over the water
heater’s rated manifold pressure (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. Set the gas control knob 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 manifold pressure operating
range for Natural Gas is 5.0” ±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
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
page 16 to replace gas control.