0631 Series
0631 Series
(6.3 GAL/MIN)
Owners Manual
Our 631 series is perfect for homes with 1-3 showers. When properly sized, they provide an endless supply of hot water to an entire home. With state-of-the-art gas combustion technology, Noritz burners maximize output and provide temperature stability while maintaining low emissions. The N-0631S is for indoor/outdoor use. The N-0631S-OD model is for outdoor use only and requires no additional venting parts.
 Available in Natural Gas (NG) and Propane (LP) models only.
 Energy Factor (EF) for N-0631S: Natural Gas 0.83, Propane 0.83
 Energy Factor (EF) for N-0631S-OD: Natural Gas 0.82, Propane 0.83
 Thermal Efficiency: 83%

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