Desa LSL18NT Safety Information And Installation Manual

Also see for LSL18NT: Safety information and installation manual

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Desa LSL18NT Safety Information And Installation Manual Manual pdf 16 page image

www.desatech.com 116292-01E16Figure 26 - Correct Burner Flame PatternYellowTippingFigure 27 - Incorrect Burner FlamePattern1/2DeflectorHeightBlueFlame1/2DeflectorHeightNote: The thermostat sensing bulb measures thetemperature of air near the heater cabinet. Thismay not always agree with room temperature(depending on housing construction, installationlocation, room size, open air temperatures, etc.).Frequent use of your heater will let you determineyour own comfort levels.MANUAL LIGHTINGPROCEDURE1. Remove front panel (see Figure 4, page 8).2. Follow steps 1 through 7 under LightingInstructions, page 15.3. With control knob pressed in, strike match.Hold match to pilot until pilot lights.4. Keep control knob pressed in for 30 secondsafter lighting pilot. After 30 seconds, releasecontrol knob. Now follow step 9, under Light-ing Instructions, page 15.5. Replace front panel.INsPeCtING heaterCheck pilot flame pattern and burner flame pat-tern often.PILOT FLAME PATTERNFigure 24 shows a correct pilot flame pattern.Figure 25 shows an incorrect pilot flame pattern.The incorrect pilot flame is not touching thethermocouple. This will cause the thermocoupleto cool. When the thermocouple cools, the heaterwill shut down.If pilot flame pattern is incorrect, as shown inFigure 25• turn heater off (see To Turn Off Gas to Appliance,page 15)• see Troubleshooting, page 18Note: The pilot flame on natural gas units willhave a slight curve, but flame should be blue andhave no yellow or orange color.Figure 25 - Incorrect Pilot Flame PatternFigure 24 - Correct Pilot Flame PatternThermocouplePilotBurnerThermocoupleBlue FlameYellow FlamePilotBurneroPeratING heaterContinuedBURNER FLAME PATTERNWARNING: If yellow tippingoccurs, your heater could pro-duce increased levels of carbonmonoxide.NOTICE: Do not mistake orangeflames with yellow tipping. Dirtor other fine particles enter theheater and burn causing briefpatches of orange flame.Figure 26 shows a correct burner flame pattern.Figure 27 shows an incorrect burner flame pattern.The incorrect burner flame pattern shows yellowtipping of the flame. It also shows the flame higherthan 1/2 the deflector panel height.If burner flame pattern is incorrect, as shown inFigure 27• turn heater off (see To Turn Off Gas To Appli-ance, page 15)• see Troubleshooting, page 18