AIR Shutter Adjustment

The final step of the installation is to check the flame pattern, which should resemble the pattern illustrated in the right column: The flames should be relatively well-defined and stable. They should be bright yellow with a blue base where attached to the burner ports, and should not look orange or sooty.

Start the heater according to the directions on page 11 and allow the heater to burn for approximately 15 minutes. The flames will increase in length and become more yellow in color as the Clarity heats up.

If the flames do not resemble the description above and the illustration in the right column, the air shutters may be adjusted.

Three separate screws—one for each burner—are used to adjust the flames for a particular installation. Two of them are accessible through the side access port on the right side of the stove. The third is accessible from the front when the control door is open. The screws may become hot to the touch after prolonged operation. Use a 3/16" Allen wrench to avoid contact if hot. For best results when fine-tuning the flame picture, initially leave the middle screw unchanged from its factory setting. Turn the other two screws as needed to increase or decrease the brightness and length of the flame: turning counterclockwise will increase the flame; turning clockwise will decrease the flame.

1.To adjust the rear burner, open the right wing door, reach through the side access port, and turn the rear screw to adjust flame (see directions above).

2.To adjust the front burner, first open the control door, then turn the front screw to adjust flame (see directions above).

Repeat procedure as needed until desired flame effect is achieved.

Monitoring the Gas Flame

Periodically, the flames of the Clarity B-Vent Gas Heater should be checked while it is operation. The flames should be relatively well-defined and stable. They should be bright yellow with a blue base where attached to the burner ports. The flames should not look orange or sooty. Portions of the logs will glow red when the flames are properly adjusted.

If you find the flames to be other than that described here, do not operate the heater. Consult a qualified service person or your Harman dealer for advice.

The Clarity flame pattern will resemble this when the unit is burning properly.

The properly-burning pilot will resemble the illustration to the right.

Rear burner

Center burner Air adjustment screws

Front burner