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General| Type | Tankless |
|---|---|
| Fuel Type | Gas |
| Gas Type | Natural Gas or Propane |
| Flow Rate | 7.1 GPM |
| GPM at 35°F Rise | 7.1 GPM |
| Energy Factor | 0.82 |
| Temperature Range | 100°F - 140°F |
| Dimensions | 13.8" W x 23.6" H x 5.9" D |
| Venting | Outdoor |
| Ignition | Electronic |
| Warranty | 12-year on heat exchanger, 5-year on parts, 1-year on labor |
| Electrical Requirements | 120V AC, 60Hz |
| Minimum BTU Input | 19, 000 BTU/hr |
Explains safety alert symbols (DANGER, WARNING, CAUTION) and other operational icons used in the manual.
Warns about fire risks from flammable liquids and scalding from hot water, especially for vulnerable groups.
Warns about indoor exhaust vent placement and specifies clearance requirements around the unit.
Covers CO hazards for specific models, flammable liquids, spray cans, and professional installation.
Advises on water quality, filter cleaning, unit operation when off, and remote controller care.
Provides guidance on preventing freezing damage and necessary maintenance checks.
Illustrates and labels the main unit components for different models.
Explains the indicators, display, and functions of the remote controller's buttons.
Outlines the four essential preparatory steps before the first use of the water heater.
Explains operation and temperature mixing when the remote controller is not used.
Warns about scalding risks from high water temperatures and advises necessary precautions.
Details powering on the unit and interpreting the initial temperature display on the remote controller.
Warns about scalding from high temperatures and explains the high-temperature warning feature.
Guides on preparation and setting the flow meter alarm level using the remote controller.
Explains how to mute the remote controller's button press sounds by holding the power button.
Details the steps to adjust the maximum hot-water supply temperature using the remote controller.
Provides advice and procedures to prevent freezing damage to the unit and pipes, especially in cold temperatures.
Lists items to check periodically for proper operation and safety, such as clearances, sounds, and leaks.
Instructions for cleaning the external surfaces of the main unit and the remote controller.
Details the process of cleaning the water drain valve and its filter to ensure proper water flow.
Lists causes and actions for issues like unit not igniting or failing to ignite.
Addresses problems with no hot water, incorrect temperature, or temperature fluctuations.
Covers remote controller issues, normal sounds, and other operational problems.
Lists recommended water quality parameters and states that poor quality is not covered by warranty.
Explains how to interpret and resolve error codes indicated by flashing lights on the unit and remote controller.
Guides on requesting service, providing details, and understanding warranty and repair parts.
Identifies necessary conversion kits for different models and outlines the conversion process.
Lists detailed specifications for NR71-SV and NR71-OD models, including dimensions, power, and materials.
Provides performance data such as gas consumption, hot water capacity, and temperature settings.
Lists detailed specifications for NR66-SV and NR66-OD models, including dimensions, power, and materials.
Provides performance data such as gas consumption, hot water capacity, and temperature settings.
Lists detailed specifications for the NR50-OD model, including dimensions, power, and materials.
Provides performance data for the NR50-OD model, such as gas consumption and hot water capacity.
