800.519.8794 www.navieninc.com
20 Goodyear lrvine, CA 92618
Installation Manual
NHW700 Non-Condensing Water Heaters
TANKLESS WATER HEATERS · BOILERS
Version: 1.0 (June, 2023)
Getting Service
If your water heater requires service:
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All repairs require pre-authorization by Technical Support.
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Request for your installer or any licensed professional to contact Technical Support at
1-800-519-8794 Option 2 once at the installation site.
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A short list of independent service providers in your area can be found on the website:
www.navieninc.com/installers.
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Contact a licensed professional for the affected system (for example, a plumber, gas fitter,
or electrician).
When you contact Technical Support, please have the following information at hand:
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Model number
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Serial number
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Date purchased
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Installation location and type
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Error code, if any appears on the front panel display
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