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Noritz N-0631S-OD User Manual

Noritz N-0631S-OD
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SAR8583-2
Rev. 03/08
Model N-0631S
N-0631S-OD
N-0531S
N-0531S-OD
TANKLESS GAS WATER HEATER
Owners Guide
NORITZ America Corporation
Thank you for purchasing this Noritz Tankless Gas Water Heater.
Before using, please:
Read this manual completely for operation instructions.
Completely fill out the warranty registration card (included separately) and
mail the detachable portion to Noritz America Corporation.
Keep this manual (and the remainder of the warranty registration card) where it
can be found whenever necessary.
Installation must conform with local codes, or in the absence of local codes,
the National Fuel Gas Code, ANSI Z223.1/NFPA 54.
Noritz America reserves the right to discontinue, or change at any time, the
designs and/or specifications of its products without notice.
Low NOx
Approved by
SCAQMD
CERTIFIED
R
- Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
- WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electrical switch; do not use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone. Follow the
gas supplier’s instructions.
If you cannot reach your gas supplier, call the fire department.
- Installation and service must be performed by a qualified installer, service
agency or the gas supplier.
If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury, or death.
WARNING
*SAR8583 T*

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Noritz N-0631S-OD Specifications

General IconGeneral
BrandNoritz
ModelN-0631S-OD
CategoryWater Heater
LanguageEnglish

Summary

Important Safety Information - Part 1

Safety Alert Icons and Definitions

Explains safety alert symbols like DANGER, WARNING, CAUTION, and other operational icons.

Flammable Liquids & Scalding Hazards

Warns against storing flammable liquids and the dangers of high water temperatures causing burns.

Important Safety Information - Part 2

Exhaust Vent & Installation Safety

Covers hazards related to exhaust vent placement, indoor installation, and flammable materials.

Combustible Materials & Air Supply

Advises on keeping combustibles away from the heater and ensuring proper air supply.

Important Safety Information - Part 3

Water Quality & Unit Care

Discusses water hardness, cleaning, scale formation, and unit operation when off.

Freezing Prevention & Remote Controller

Provides measures to prevent freezing and guidelines for handling the remote controller.

General Parts Identification

Main Unit Components

Identifies key parts of the indoor and outdoor wall-mounted main units with diagrams.

Remote Controller Operation

Display Indicators and Buttons

Explains the function of indicators, display elements, and buttons on the remote controller.

Initial Operation Guide

Pre-Use Preparations

Outlines the steps for preparing the water heater for the first time, including valve and power checks.

Using the Water Heater (Without Remote)

Basic Operation & Scalding Prevention

Details how to operate the heater without a remote, including temperature mixing and safety warnings.

Using the Water Heater (With Remote)

Setting Temperature & Basic Use

Guides users on turning on the heater and setting the desired temperature using the remote.

Flow Meter Alarm Setup

Configuring Tub Fill Alerts

Instructions on setting up the flow meter alarm to monitor water volume for filling a tub.

Muting the Remote Controller

Disabling Sound Feedback

Explains how to mute or unmute the audible alerts and button feedback from the remote controller.

Adjusting Maximum Temperature Output

Setting the Upper Temperature Limit

Details the procedure for changing the maximum possible hot water output temperature.

Preventing Freezing Damage

Cold Weather Protection Measures

Provides instructions to prevent freezing of the unit and its plumbing in cold environments.

Draining the Water Heater

Preparing for Long Periods of Non-Use

Step-by-step guide on how to drain the water heater for storage or extended periods.

Regular Maintenance Procedures

Periodic Inspection Checklist

Lists essential checks for regular inspection to ensure proper operation and safety.

Cleaning Equipment & Remote Controller

Guidelines for cleaning the exterior of the unit and the remote controller for maintenance.

Water Drain Valve Filter Maintenance

Cleaning the Inlet Filter

Instructions on how to remove and clean the filter in the water drain valve to maintain performance.

Troubleshooting - Initial Operation Issues

Ignition & Startup Problems

Addresses common issues where the unit fails to ignite or starts erratically.

Water Temperature Problems

Solutions for scenarios where water is not hot, too hot, or takes time to heat.

Troubleshooting - Water Flow & Amount

Flow Rate & Temperature Fluctuations

Explains causes for unstable water temperature, flow, and inability to reach set temperatures.

Hot Water Availability Issues

Addresses problems with the total amount of hot water and flow meter alarm not sounding.

Troubleshooting - Controller & Other Issues

Remote Controller Malfunctions

Solutions for problems with the remote controller's display, buttons, or power.

Operational Sounds & Anomalies

Explains normal operational noises and addresses issues like unit stopping, smoke, and water appearance.

Unit Error Indicators

Flashing Light on Unit

Details the meaning of a flashing lamp on the unit and the corrective actions to take.

Remote Controller Error Codes

Error Code Interpretation & Resolution

Lists error codes displayed on the remote controller, their causes, and recommended actions.

Follow-up Service and Support

Requesting Technical Assistance

Information on how to request service, including necessary details and contact information.

Warranty & Parts Information

Covers warranty terms, repair parts availability, and guidelines for reinstallation.

Product Specifications - N-0631S Models

Technical Data

Provides detailed specifications for N-0631S/N-0631S-OD models, including dimensions, power, and materials.

Performance Metrics

Details gas consumption, hot water capacity, and available temperature settings for these models.

Product Specifications - N-0531S Models

Technical Data

Provides detailed specifications for N-0531S/N-0531S-OD models, including dimensions, power, and materials.

Performance Metrics

Details gas consumption, hot water capacity, and available temperature settings for these models.

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