Noritz EZ111DVNG
Noritz EZ111DVNG GQ-C3259WX-FF US NG Tankless Water Heater
取扱説明書
導入
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Noritz EZ111DVNG GQ-C3259WX-FF US NG Tankless Water Heater. Please read all instructions thoroughly before attempting to install or operate this appliance. Retain this manual for future reference.

Image: The Noritz EZ111DVNG Tankless Water Heater, showing its compact design and connection points. This unit is designed for efficient water heating.
安全情報
Always follow basic safety precautions to reduce the risk of fire, electric shock, and personal injury. This appliance must be installed by a qualified professional in accordance with all local codes and regulations.
- 危険: 回避しないと死亡または重傷につながる差し迫った危険な状況を示します。
- 警告: 回避しないと死亡または重傷につながる可能性のある潜在的に危険な状況を示します。
- 注意: 回避しないと軽度または中程度の傷害につながる可能性のある潜在的に危険な状況を示します。
- 知らせ: 重要と見なされるが、危険に関連しない情報を示します。
Ensure proper ventilation and gas supply connections are made correctly to prevent gas leaks or carbon monoxide poisoning.
セットアップとインストール
The Noritz EZ111DVNG is designed for versatile installation, including direct vent (DV), single vent (SV), 2-inch flex vent (FSV), or outdoor (OD) configurations. Its top-mount water connections simplify replacement of traditional tank water heaters.
インストール手順:
- 場所の選択: Choose a location that complies with all local codes, provides adequate clearance for maintenance, and allows for proper venting. For outdoor models, ensure protection from extreme weather conditions.
- 取り付け: Securely mount the unit to a sturdy wall structure using appropriate fasteners. The EZ mounting system is designed for safer installation.
- 水の接続: Connect the cold water inlet and hot water outlet to the top-mounted connections. Ensure all connections are watertight and use appropriate shut-off valves.
- ガス接続: Connect the natural gas supply line to the unit. All gas connections must be performed by a licensed professional and tested for leaks.
- ベント: Install the venting system according to the chosen configuration (DV, SV, FSV, or OD) and local codes. The unit supports 2-inch PVC and 2-inch flex vent capabilities. Ensure proper slope and sealing.
- 電気接続: Connect the unit to a dedicated electrical circuit as specified in the electrical requirements section of the full installation manual.
- 初期起動: After all connections are secure and tested, slowly open the water supply valves. Purge air from the water lines. Then, open the gas supply valve and follow the initial startup procedure outlined in the comprehensive manual to ensure proper ignition and operation.
操作手順
The Noritz EZ111DVNG is designed for automatic operation. Once properly installed and powered, it will heat water on demand.
基本操作:
- 電源オン/オフ: The unit typically has a power switch. Ensure it is in the 'ON' position for operation.
- 温度設定: Adjust the desired hot water temperature using the control panel on the unit. Refer to the full manual for specific temperature adjustment procedures.
- 給湯需要: Open any hot water faucet in your home. The unit will detect water flow and automatically ignite to heat the water to the set temperature.
- 流量: The unit provides a maximum flow rate of 11.1 gallons per minute (GPM), ensuring ample hot water for multiple applications simultaneously.
- シャットダウン: To temporarily shut down the unit, turn off the power switch. For extended periods of non-use, or for maintenance, also close the gas and water supply valves.
メンテナンス
Regular maintenance ensures the longevity and efficient operation of your tankless water heater. It is recommended that a qualified service technician perform annual inspections and maintenance.
Recommended Maintenance Tasks:
- 年次検査: Have a qualified technician inspect the unit, including heat exchanger, burner, venting system, and all connections, for wear, corrosion, or blockages.
- スケール除去: Depending on water hardness, the unit may require periodic descaling to remove mineral buildup in the heat exchanger. This procedure should be performed by a professional.
- 通気システムのチェック: Ensure the venting system is clear of obstructions and properly sealed.
- 浄水器の洗浄: If equipped with an inlet water filter, clean it periodically as per the full manual's instructions.
- Winterization (for outdoor or cold climate installations): If the unit is installed in an area subject to freezing temperatures, follow the winterization procedures in the full manual to prevent damage from freezing water. This typically involves draining the unit.
トラブルシューティング
このセクションでは、よくある問題の解決策を紹介します。ここに記載されていない問題、または問題が解決しない場合は、資格のあるサービス技術者にお問い合わせください。
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| お湯が出ない | No gas supply; power off; water flow too low; unit lockout. | Check gas valve; ensure power is on; increase water flow; reset unit by cycling power. |
| 変動する水温 | Inconsistent water pressure; mineral buildup; multiple hot water demands. | Check water pressure regulator; descale unit (professional service); reduce simultaneous hot water use. |
| ユニットにエラーコードが表示される | 特定の内部障害。 | Refer to the full manual for error code definitions and recommended actions. Contact service if necessary. |
| 給湯量が少ない | Clogged inlet filter; mineral buildup; partially closed shut-off valve. | Clean inlet filter; descale unit (professional service); ensure all valves are fully open. |
仕様
Key technical specifications for the Noritz EZ111DVNG GQ-C3259WX-FF US NG Tankless Water Heater:
- モデル番号: EZ111DVNG
- アイテムタイプ名: GQ-C3259WX-FF US NG
- 容量: 11.1 Gallons (Flow Rate)
- 電源: Gas Powered (Natural Gas)
- Min Gas Input: 18,000BTU
- Max Gas Input: 199,900BTU
- 熱出力: 199.9 British Thermal Units (Max)
- Efficiency (Energy Factor): 0.97
- 流量: 毎分11.1ガロン
- マウントタイプ: 壁
- 商品の重量: 81 ポンド
- 材質タイプ: Polyvinyl Chloride (referring to venting, not unit casing)
- 特別な機能: EZ Mounting for Safer Installation, Top Mount Water Connections for Easy Replacement, Versatile Venting Options (DV, SV, FSV, OD).
保証情報
The Noritz EZ111DVNG GQ-C3259WX-FF US NG Tankless Water Heater comes with a manufacturer's warranty. Details regarding the length and terms of the warranty are provided in the documentation included with your unit. Please retain your proof of purchase for warranty claims.
For specific warranty coverage and conditions, refer to the official Noritz warranty statement provided at the time of purchase or visit the official Noritz website. Warranty claims typically require installation and service by a qualified professional.
カスタマーサポート
If you have questions, require technical assistance, or need to schedule service for your Noritz tankless water heater, please contact Noritz customer support or a qualified service technician in your area.
Always provide your model number (EZ111DVNG) and serial number when contacting support to expedite assistance.
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