American Water Heater ULTRA LOW NOx SERIES 104, BCL manual Controls Overview Control BOX Assembly

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CONTROLS Overview - CONTROL BOX ASSEMBLY

ON/OFF

Switch

Blower

Prover

Switch

Digital

Thermostat

Ignition

Control

Pressure Switches – All Models

All BCL 120 thru 250 models are provided with one blower prover switch with +0.38" w.c. setpoint. The blower prover switch is provided on the heater to verify that the fan is operating. It is a positive pressure switch whose electrical contacts are normally open. The blower prover switch electrical contacts will close on a rise in pressure as the blower increases the pressure in the burner. This switch is connected to the blower outlet pressure tap by a piece of silicone tubing. This tubing must be connected in order for the switch to close the electrical contacts.

Servicing should only be performed by a Qualified Service Technician

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Contents For Models BCL Commercial GAS Water HeatersPage Table of Contents Service Reminder Service WarningIntroduction QualificationsTools Required Gas and Electrical Characteristics Installation ConsiderationsMultiple Appliance Installations GAS Pressure RequirementsAIR Supply Contaminated AIR MAKE-UP AIR Direct Communication with OutdoorsAIR Requirements Power SupplyClosed Water Systems Thermal ExpansionFeatures and Components Burner Replacement Blower and Burner AssemblyPage Spark Igniter / Flame Sensor / Control Timing Spark Igniter, Flame Sensor, Sight GlassSpark Igniter Flame SensorVenting Installation Venting Category and MaterialsMinimum Clearances BCL VentingExterior Clearances Type B GAS Vent Venting Tables Technical Venting DataSequence of Operation Operation and ServiceYES Sequence of Operation Flow ChartLighting and Operating Label For Your Safety Read Before OperatingComplaint Cause Remedy User Qualified Agency TroubleshootingPressure Switches All Models Controls Overview Control BOX AssemblyHigh Limit SWITCH/ Digital Thermostat Status Display Lights Digital Thermostat LED Indication ActionContinuity Check of High Limit ECO ConditionsThen Upper Temperature Probe Continuity Check Ohms Resistance TableOhms Lower Temperature Probe Continuity Check Ignition Control Wiring Terminals DescriptionStart UP Heat Mode Start UP/ Flame RECOVERY/ Safety LockoutFlame FAILURE- Recycle Mode Failure to Light LockoutTroubleshooting Guide for Ignition Control Fault ConditionsInternal 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.