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Manafacture: Lennox Hearth File size: 821.19 kb File name: Language of manual:

B. Brush all joints and connections with the gas leak test solution to check for leaks. If bubbles are formed, or gas odor is detected, turn the gas control knob to the “OFF” position. Either tighten or refasten the leaking connection and retest as described above. C. When the gas lines are tested and leak free, be sure to rinse off the leak testing solution. D. When the gas lines are tested and leak free, observe the individual tongues of flame on the burner. Make sure all ports are open and producing flame evenly across the burner. If any ports are blocked, or partially blocked, clean out the ports. Gas Pressure Check The appliance regulator controls the burner pressure which should be checked at the pressure test point (..." NPT plugged tap) located on the manual control valve body (on Manual models) or on the control valve itself (on Millivolt models), identified OUT for the manifold side and IN for inlet pressure (see Figure 8). Ensure operating pressures are within the limits specified in the technical chart on page 10. The pressure should be checked with the gas appliance burning and the control set to high. Manual Valve Manifold Pressure Millivolt Valve Inlet Pressure Manifold Pressure Figure 8 The pressure regulator on manual models is preset and locked to avoid tampering. If the pressure is not as specified in the Technical Details Chart on page 10, replace the regulator with P/N 110353 for natural gas and P/N 120341 for propane (L.P.G.) heaters. The pressure regulator on manual models is preset and locked to avoid tampering. If the pressure is not as specified in the Technical Details Chart on page 10, replace the regulator with P/N 110353 for natural gas and P/N 120341 for propane (L.P.G.) heaters. Step 4. Placing the Logs WARNING: DO NOT PLACE ANY LAVA ROCK ON LOGS OR BURNERS. THIS MAY CAUSE SOOTING. ONLY PLACE LAVA ROCK ON FLOOR OF FIREPLACE. WARNING: DO NOT ADD EXTRA LOGS OR ORNAMENTS SUCH AS PINE CONES, VERMICULITE OR ROCK WOOL. USING THESE ADDED ITEMS CAN CAUSE SOOTING. The heater has a unitized base, a front log and a top twig. It is important to follow the instructions to place the logs properly over the burner assembly. 1. Place the front log as shown inFigure 9 (A). Position the front log so it fits between the burner and the front grate bars, resting completely on the grate base. 2. Place the unitized log set over the burner assembly as shown in Figure 9 (B). Be sure the unitized log set is against the sides of the burner and is resting down completely over the grate. 3. When placing the unitized log set over the burner assembly and resting it against the sides of the burner, make sure the bottom of the log set sits down completely over the grate as shown in Figure 9 (C). 4. Place and lock the top twig over the twig pins as shown in Figure 9 (D). 5. For an optimum flame, be sure that the unitized log set rests against the burner at the two places shown in Figure 9 (E). Grate Base A Grate Bar Front Log Unitized Log Set B C Twig Pins Unitized Log Set Must Lay Flat On Grate Base D Top Twig E Unitized Log Set Must Be Placed Against Burner Bracket At These Two Places Manual Log Set Millivolt Log Set Figure 10 WARNING: FAILURE TO POSITION THE PARTS IN ACCORDANCE WITH FIGURE 10 OR FAILURE TO USE ONLY PARTS SPECIFICALLY APPROVED WITH THIS APPLIANCE MAY RESULT IN PROPERTY DAMAGE OR PERSONAL INJURY. Periodically check the positioning of all logs. Flame Appearance REFER TO THE OPERATING INSTRUCTIONS LOCATED AT THE BACK OF THIS MANUAL BEFORE LIGHTING THE APPLIANCE TO OBSERVE THE FLAMES. Flames from the pilot burner should be visually checked as soon as the appliance is installed. In addition a periodic visual check of the flames should be made. The pilot flame should always be present when the appliance is in operation (Figure 11). WARNING: NO ADJUSTMENTS ARE TO BE MADE TO THE ODS PILOT SYSTEM. TAMPERING WITH THIS SYSTEM CAN BE EXTREMELY HAZARDOUS. Figure 9 NOTE: DIAGRAMS & ILLUSTRATION NOT TO SCALE. Propane Pilot Shown Propane Pilot Shown Figure 11 An incorrect pilot flame pattern is shown in Figure 12. This pilot flame will cause the thermocouple to cool. When the thermocouple cools, the log set will shut off. If pilot flame pattern is incorrect, or if log set shuts off, contact your service technician. Propane Pilot Shown Figure 12 In normal operation, at full rate, after 15 minutes the following flame appearance should be observed: Burner And Flame Characteristics The Serene Heat Gas Log Set features a new concept in integrated burner and log design. The flames from the burner travel horizontally through the log set and emerge at the knot holes. The flames are slightly blue off the burner and as they progress through the log set, they change to a light yellow color. Yellow decorative flamesare visible as the flames exit the log set. When the log set is first lit, the flame may be entirely blue. Light yellow flame will form at the top of the logs after several minutes of operation. The base of ...

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