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Servicing should only be performed by a Qualied Service Agent
Compare result to the de‑rated input required for the elevation at the installation location.
Should it be necessary to adjust the gas pressure to the burner, to obtain the full input rate, the steps below
should be followed:
3. Remove the pressure regulator cover screw and adjust the pressure by turning the adjusting screw
with a small screwdriver. Do not exceed 4.0" (1 kPa) natural gas models and 10.0" w.c. (2.5 kPa)
on the propane models. Clockwise to increase gas pressure and input rate. Counterclockwise to
decrease gas pressure and input rate.
4. “Clock” the meter as in step (2) above.
5. Repeat steps (3) and (4) until the specified input rate is achieved.
6. Turn the manual gas valve to “OFF”. Replace the pressure regulator cover screw. Remove the
pressure gauge or manometer from the manifold pressure tap. Replace the set screw in the
manifold pressure tap. If the gas pressure regulator cannot be adjusted to give the full input rating
with sufficient gas pressure at the valve, check to ensure the unit is equipped with the correct
orifice.