Napoleon PRESTIGE 308RB User Manual (English)

Questions and Answers:

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Nancy HickmanSep 2, 2025
What to do if Napoleon PRESTIGE 308RB infrared burner flashes back?
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  Lauren VazquezSep 2, 2025
  If the infrared burner on your Napoleon grill flashes back (makes a loud 'whoosh' sound, followed by a blow-torch type sound and grows dim), take these steps: * Turn the burner off and let it cool for at least two minutes. Then, relight it and burn it on high for at least five minutes, or until the ceramic tiles are evenly glowing red. * Make sure that objects or accessories cover no more than 75% of the grill surface. * Inspect the ceramic tiles for cracks after the burner has cooled. If you find any cracks, contact your authorized Napoleon dealer to order a replacement burner assembly.
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Andre ReidSep 1, 2025
Why do burners burn with yellow flame and smell of gas on Napoleon Grill?
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  Mark SteeleSep 1, 2025
  If the burners on your Napoleon grill are burning with a yellow flame and there's a smell of gas, it could be due to a spider web or other debris, or an improperly adjusted air shutter. Thoroughly clean the burner by removing it. A qualified gas installer must open the air shutter slightly according to combustion air adjustment instructions.
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Jennifer BrownAug 31, 2025
What to do if Napoleon PRESTIGE 308RB burner output on 'high' setting is too low?
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  hoffmanrachelAug 31, 2025
  If the burner output on the 'high' setting is too low on your Napoleon grill, and you notice a rumbling noise and fluttering blue flame at the burner surface, it could be due to: * Lack of gas: Check the gas level in your propane cylinder. * Pinched supply hose: Reposition the supply hose if it's pinched. * Dirty or clogged orifice: Clean the burner orifice. * Obstruction in venturi tube: Clean out the venturi tube. * Improper lighting procedure: Ensure you follow the lighting procedure carefully. All gas grill valves must be in the off position when turning on the tank valve. Turn the tank on slowly to allow pressure to equalize.
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Heather HensonAug 30, 2025
Why is my Napoleon Grill having excessive flare-ups and uneven heat?
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  jonathan39Aug 30, 2025
  Excessive flare-ups and uneven heat in your Napoleon grill can be due to a few reasons: * Incorrectly installed sear plates: Make sure the sear plates are installed with the holes facing the front and the slots on the bottom. * Improper preheating: Preheat the grill with both main burners on high for 10 to 15 minutes. * Excessive grease and ash: Regularly clean the sear plates and drip pan. Do not line the drip pan with aluminum foil.
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Emily RomeroAug 28, 2025
What to do if Napoleon Grill has low heat/low flame?
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  cthomasAug 28, 2025
  If your Napoleon grill has low heat or a low flame when the valve is turned to high, here's what you can do: * For propane grills: Ensure you're following the correct lighting procedure. All gas grill valves must be off when you turn on the tank valve. Turn the tank on slowly to allow the pressure to equalize. * For natural gas grills: Ensure the supply line is properly sized according to the installation code. * For both propane and natural gas grills: Preheat the grill with both main burners on high for 10 to 15 minutes.
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Paul McguireAug 27, 2025
Why is there low heat or low flame on my Napoleon PRESTIGE 308RB Grill when the valve is turned to high?
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  Joyce GarciaAug 27, 2025
  The low heat or flame on your Napoleon Grill could be due to several reasons: * **For propane grills:** It may be due to an improper lighting procedure. Ensure you follow the lighting procedure carefully. All gas grill valves must be in the off position when the tank valve is turned on. Turn the tank on slowly to allow pressure to equalize. Refer to the lighting instructions for the correct procedure. * **For natural gas grills:** It may be an undersized supply line. The pipe must be sized according to the installation code. * **For both propane and natural gas grills:** It might be due to improper preheating. Preheat the grill with both main burners on high for 10 to 15 minutes.
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Dawn KleinAug 27, 2025
Why is my Napoleon Grill burner not lighting with the igniter?
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  kmorrisonAug 27, 2025
  If your Napoleon Grill burner won't light with the igniter but lights with a match, the cause may be a dead or incorrectly installed battery. Replace it with a heavy-duty 'AAA' battery, installing it with the positive terminal up. Also, check that the electrode wire is firmly pushed onto the terminal on the back of the igniter. Ensure you are using the correct replacement igniter (one spark systems must use a one spark igniter). Make sure that the collector box is tight, and the gap between the electrode end and the collector box is between 1/8 - 3/16", adjusting by bending the box if needed. Lifting flames on burner can also be the reason.
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Michael CollierAug 25, 2025
How to fix a Napoleon Grill burner that won't light with the igniter?
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  Francisco HillAug 26, 2025
  If the burner on your Napoleon Grill won't light with the igniter but lights with a match, first replace the battery with a heavy-duty 'AAA' battery, ensuring the positive terminal is up. Check that the electrode wire is firmly attached to the igniter terminal. If you have a one-spark system, use a one-spark igniter. Make sure the collector box is tight and the gap between the electrode and collector box is between 1/8 - 3/16", adjusting by bending the box if needed. Also, slightly close the air shutter.

Napoleon PRESTIGE 308RB Specifications

General

Fuel Type	Propane
Rotisserie Burner	No
Material	Stainless Steel
Dimensions	49.25" H x 49.5" W x 22.5" D
Cooking Area	425 sq. in.
BTU	12, 000 BTUs
BTU Output	12, 000 BTUs