American Water Heater 381T1546NOX, BCL manual Continuity Check of High Limit ECO, Conditions, Then

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CONTINUITY CHECK OF HIGH LIMIT (ECO)

CONDITIONS:

Power On – No Hot Water.

Red, digital thermostat “Call for Heat” LED – On.

Turn Power OFF.

 

Continuity check of ECO (energy cut-out, high limit)

 

Black to Black wires of upper probe. Power is off.

IF

 

THEN

Continuity is indicated

 

Opens at 203° F; closes at 193° F. If water is below 193° F,

(ZERO “0.0” Resistance)

 

continuity is correct.

Continuity is not present

 

Replace ECO sensor, if water temperature is below 193° F.

(meter reads “0.L”)

 

 

Water is less than 120° F

 

• Reset status LED should be on.

 

 

• Replace digital thermostat if control will not manually reset.

22

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 StatusContinuity Check of High Limit ECO ConditionsThen Upper Temperature Probe Continuity Check Ohms Resistance TableOhms 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 CheckUGB Blower Speed Control SW2 SW4 Used forPIN 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.