Initial Firing; Manifold Pressure Regulator Adjustment; Pilot Flame Adjustment; Figure 3.12 Pilot Flame - Osburn Designer DV36 Installation And Operation Instructions Manual

Built-in direct vent gas fireplace designer series
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4. Optionally apply the ember medium to the burner tray, evenly distributing between the
logs.
Do not over apply the ember medium in any one area over another and avoid blocking
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the open slots on the top of the tray – excessive application on any one spot, or blockage of the
burner ports and air openings can lead to localized flame impingement and sooting.
The vermiculite is not suitable for direct application to the burner. The vermiculite has
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been provided as a medium to be spread about the visible areas to the left and right of the burner
tray. Crushing small amounts of the solid ember pieces and mixing them with the vermiculite is
recommended to visually enhance the overall appearance of the medium.

3.10 Initial Firing

When lit for the first few times, the appliance may emit an odour resulting from evaporation of paint and
lubricants used in the manufacturing process. Open a door or window for ventilation. Anyone with a
respiratory condition may need to leave the room during the initial firings.
Occasionally, after a cold start water vapour may condense and fog the glass. After a few minutes the moisture
will disappear and after several more minutes the flames will become yellow.

3.10.1 Manifold Pressure Regulator Adjustment

The manifold pressure regulator controls gas input and flame height, and is pre-adjusted at the factory. No
further adjustment is required.

3.10.2 Pilot Flame Adjustment

For proper operation, the pilot and main burner flames must be steady and not lifting off or floating. The pilot
flame should engulf the top 3/8" - 1/2" (10-13mm) of the thermopile. The pilot flame adjustment should be
performed by a qualified service person only. To adjust the pilot flame, turn the pilot adjustment screw
counter-clockwise to increase, and clockwise to decrease the flame. Ensure that the pilot flame completely
engulfs the thermopile (See Figure 3.12).

Figure 3.12 Pilot Flame

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