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Air Shutter Adjustment Guidelines: Amount of Primary Air Flame Color Air Shutter Adjustment If air shutter is closed too far Flame will be orange Air shutter gap should be increased If air shutter is open too far Flame will be blue Air shutter gap should be decreased Figure 12 -Burner Flame Appearance Model SLDVT-30 and 35 Figure 13 -Burner Flame Appearance Model SLDVT-40 Figure 14 -Burner Flame Appearance Model SLDVT-45 SUPERIORSUPERIORDIRECT-VENT GAS FIREPLACES • MODELS SLDVT-30/35/40/45 • CARE AND OPERATION INSTRUCTIONS Burner Air Shutter Adjustment Procedure WARNINGS •Air shutter adjustment should only be performed by a qualified professional service technician. •Ensure front glass panel are in place and sealed during adjustment. CAUTIONS • Carbon will be produced if the air shutter is closed too much. Any damage due to carboning resulting from improperly setting the air shutter is not covered under the warranty. • Theairshutterdoorandnearby appliance surfaces are hot. Exercise caution to avoid injury while adjusting flame appearance. 1. Locate adjustment rod and adjust air shutter to the standard setting as shown in Figure 15 (adjustment rod is located in the lower control compartment). Note: Rotating the adjustment rod down to decrease air and up to increase air. 2. Light appliance (follow lighting procedure on lighting label in control compartment or see the lighting instructions, Pages 22 and 24 in this manual). 3. Allow the burner to operate for at least 15 minutes while observing the flame continuously to ensure that the proper flame appearance has been achieved (see Figures 12, 13 or 14). If the following conditions are present, adjust accordingly. • If flame appears weak or sooty, adjust the air shutter, incrementally, to a more open position until the proper flame appearance is achieved. • If flame stays lowered blue, adjust the air shutter, incrementally, to a more closed position until the proper flame appearance is achieved. 4. Leave the control knob (off/pilot/on) in the ON position and the burner OFF/ON switch OFF (and remote switches, if applicable). 5. When satisfied that the burner flame appearance is normal, close the lower control compartment door (see Figures 12, 13 and 14 on Page 16). Burner Air Shutter Adjustment Adjustment Rod Up (Fully Open Position) Air Shutter Adjustment Rod Down min. air opening position) Burner Tube Adjustment Set-Screw Ref. Air shutter Patent: U.S. Pat. 5,553,603 Main Burner Factory Air Shutter Opening Setting Inches (millimeter) Model Natural Gas Propane Gas SLDVT-30/35 1/32 (0.795) 3/16" (4.763) SLDVT-40/45 1/32 (0.795) 3/16" (4.763) Figure 15 Millivolt Appliance Checkout The pilot flame should be steady, not lifting or floating. Flame should be blue in color with traces of orange at the outer edge. The top 3/8" (10 mm) at the pilot generator (thermopile) and the top 1/8" minimum (tip) of the quick drop out thermocouple should be engulfed in the pilot flame. The flame should project 1" (25 mm) b...

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