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Altitude certifications standard natural and LP models are certified up to 2000''. High altitude models, 8000''
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Anode rods patented design utilizes multiple magnesium rods to ensure long life and corrosion-resistance
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Specialized burner assembly each model features 5 premix burners mounted into a metal face plate and sealed with a Viton gasket, patented ''quick release'' manifold for easier service
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Direct spark-to-pilot ignition system energy saving ignition that ignites pilot only when there is a call for heat
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Round premix burners precision burners are formed from high chromium stainless steel
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Low NOx emissions GX90-550 and GX90-640 meet low NOx emissions of less than 40 ng/J full-port, full-flow drain valve
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Full-port, full-flow drain valve factory installed brass drain valve allows for faster draining and servicing