American Water Heater 395T1806NOX Introduction, Qualifications, Service Warning, Service Reminder

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Introduction

The service handbook is designed to aid in servicing and troubleshooting American Water Heaters BCL commercial water heaters in the field. No duplication or reproduction of this book may be made without the express written authorization of American Water Heaters.

The following text and illustrations will provide you with a step by step procedure to verify proper installation, operation, and troubleshooting procedures. Additional quick reference data is included to assist you in servicing these products.

The information contained in this handbook is designed to answer commonly faced situations encountered in the operation of this product line and is not meant to be all inclusive. If you are experiencing a problem not covered in this handbook, please contact American Water Heaters Technical Information at 1-800-456- 9805, by email at help@americanwaterheater.com, or your local American Water Heaters representative for further assistance. Our website at: www.americanwaterheater.com is also a resource for installation and service information. This handbook is intended for use by licensed plumbing professionals and reference should be made to the installation manual accompanying the product. This handbook contains supplemental information to the product’s installation and operation manual.

Qualifications

“Qualified Service Technician" or "Qualified Agency”

Installation and service of this water heater requires ability equivalent to that of a Qualified Agency (as defined by ANSI below) in the field involved. Installation skills such as plumbing, air supply, venting, gas supply and electrical supply are required in addition to electrical testing skills when performing service.

ANSI Z223.1 Sec. 3.3.85: “Qualified Agency” - “Any individual, firm, corporation or company that either in person or through a representative is engaged in and is responsible for (1) the installation, testing or replacement of gas piping or (2) the connection, installation, testing, repair or servicing of appliances and equipment; that is experienced in such work; that is familiar with all precautions required; and that has complied with all the requirements of the authority having jurisdiction.”

Service of this water heater requires ability equivalent to that of a Qualified Service Technician in the field involved. Installation skills such as plumbing, air supply, venting, gas supply, electrical supply are required in addition to electrical testing skills. Some products may require combustion testing equipment and certification. If you do not possess these skills or do not have the proper tools you should not attempt to service this water heater.

SERVICE WARNING

If you are not qualified (as defined by ANSI above) and licensed or certified as required by the authority having jurisdiction to perform a given task do not attempt to perform any of the procedures described in this manual. If you do not understand the instructions given in this manual do not attempt to perform any procedures outlined in this manual.

SERVICE REMINDER

When performing any troubleshooting step outlined in this manual always consider the wiring and connectors between components. Perform a close visual inspection of all wiring and connectors to and from a given component before replacement. Ensure wires were stripped before being crimped in a wire connector, ensure wires are crimped tightly in their connectors, ensure connection pins in sockets and plugs are not damaged or worn, ensure plugs and sockets are mating properly and providing good contact.

Failure to perform this critical step or failing to perform this step thoroughly often results in needless down time, unnecessary parts replacement, and customer dissatisfaction.

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Servicing should only be performed by a Qualified Service Technician

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Contents Commercial GAS Water Heaters For Models BCLPage Table of Contents Service Warning Service ReminderIntroduction QualificationsTools Required Installation Considerations Gas and Electrical CharacteristicsMultiple Appliance Installations GAS Pressure RequirementsAIR Supply MAKE-UP AIR Direct Communication with Outdoors Contaminated AIRPower Supply AIR RequirementsClosed Water Systems Thermal ExpansionFeatures and Components Blower and Burner Assembly Burner ReplacementPage Spark Igniter, Flame Sensor, Sight Glass Spark Igniter / Flame Sensor / Control TimingSpark Igniter Flame SensorInstallation Venting Category and Materials VentingMinimum Clearances BCL VentingExterior Clearances Venting Tables Technical Venting Data Type B GAS VentOperation and Service Sequence of OperationSequence of Operation Flow Chart YESFor Your Safety Read Before Operating Lighting and Operating LabelTroubleshooting Complaint Cause Remedy User Qualified AgencyControls Overview Control BOX Assembly Pressure Switches All ModelsHigh Limit SWITCH/ Digital Thermostat Display Lights Digital Thermostat LED Indication Action StatusConditions Continuity Check of High Limit ECOThen Ohms Resistance Table Upper Temperature Probe Continuity CheckOhms Lower Temperature Probe Continuity Check Wiring Terminals Description Ignition ControlStart UP/ Flame RECOVERY/ Safety Lockout Start UP Heat ModeFlame FAILURE- Recycle Mode Failure to Light LockoutFault Conditions Troubleshooting Guide for Ignition ControlInternal Control Failure Flame Sensor Current CheckSW2 SW4 Used for UGB Blower Speed ControlPIN Connections PIN Number Description Wiring Diagram American Water Heaters

381T1546NOX, 395T1996NOX, BCL, 381T1206NOX, 395T2506NOX specifications

The American Water Heater Ultra Low NOx Series represents a significant advancement in water heating technology, aiming to meet stringent environmental regulations while delivering reliable hot water for residential applications. Models such as the 104,395T1806NOX, 395T2506NOX, 381T1206NOX, and BCL are designed to prioritize efficiency, performance, and compliance with the latest emission standards.

One of the defining features of the Ultra Low NOx Series is its innovative combustion technology. These water heaters utilize a state-of-the-art gas burner that dramatically reduces nitrogen oxide (NOx) emissions, ensuring compliance with local and federal regulations. This technology not only benefits the environment but also contributes to improved indoor air quality.

Efficiency is a hallmark of the Ultra Low NOx Series, with models designed to maximize energy savings while delivering consistent hot water. They feature a user-friendly, adjustable thermostat, providing homeowners with the ability to set their desired water temperature for optimal comfort. In addition, the insulation on these water heaters is designed to minimize heat loss, ensuring that energy consumption is kept to a minimum.

The Ultra Low NOx models are equipped with an easy-to-use digital control panel that allows homeowners to monitor and adjust settings with ease. This convenience is enhanced by advanced diagnostics, which provide real-time alerts regarding system performance and maintenance needs. This proactive approach helps extend the lifespan of the unit and enhances reliability.

Safety is another crucial characteristic of the Ultra Low NOx Series. Each model is equipped with safety features such as a flame rollout switch and a fully automatic gas shut-off, which ensure that the system operates safely under various conditions.

In terms of installation and maintenance, these models are designed with user-friendly features, making the process simpler for technicians. The compact design allows for flexible installation options, even in tighter spaces.

Overall, the American Water Heater Ultra Low NOx Series, including the 104,395T1806NOX, 395T2506NOX, 381T1206NOX, and BCL models, represents an excellent choice for homeowners seeking an efficient, reliable, and environmentally responsible water heating solution. With a focus on reducing emissions and enhancing performance, these models are built to meet the demands of today's conscientious consumers.
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