Check the orientation of the conversion plug, if necessary, unscrew, turn over a screw back in (wide section away from cap for LP and against cap for NG as shown).
Replace regulator cap.
Test gas pressure (test point provision on side of regulator). When converting regulator for different settings, the function of the regulator must be checked at pressure at least 1”WC above the specified manifold pressure.
The gas pressure regulator supplied with this appliance can withstand a maximum input pressure of 14” WC. If the line pressure is in excess of that amount, a step down regulator will be required.