American Water Heater BCL3 95T199 6NOX, BCL3 85T390 6NOX Sequence of Operation Flow Chart, Yes

Page 27

Sequence of Operation Flow Chart

Description of this flow chart can be found in the “SEQUENCE OF OPERATION” section found on page 26.

Switch power on to unit

Thermostat calls for heat

VFD sends power to Blower

Blower engages Prover Switch

Blower runs at low speed

After 30 seconds, Ignition

Control provides power to

Spark Igniter and opens Gas

Valve

Ignition Control maintains spark for up

to 4 seconds and monitors Flame Sensor to determine if Burner is lit

Does Burner

NO

 

light?

 

YES

Ignition Control changes Blower from low speed to high speed after 5 seconds

Ignition Control monitors

flame signal

YES

Loss of flame signal?

NO

Thermostat is satisfied

Blower – off; Blower Prover – opens

Ignition Control – off; Gas Valve – closes

Gas Valve – off

Gas Valve – off

NO

 

 

 

 

 

 

 

 

 

Is this the third

YES

 

Wait 15 minutes.

 

 

 

 

 

Blower runs at

 

ignition trial?

 

 

low speed

 

 

 

 

 

 

 

 

 

 

NO

YES

Is this the third loss of flame signal?

Figure 24.

27

Image 27
Contents Commercial gas water heaters Table Of Contents Approvals Safe Installation, Use and ServiceFire and Explosion Hazard General Safety InformationPrecautions Grounding InstructionsHydrogen Gas Flammable Qualifications Qualified Installer or Service AgencyIntroduction Abbreviations UsedControls Features and ComponentsEliminator self-cleaning system Blower/Burner Assembly High Limit SwitchRecovery Capacities, based on 82% efficiency Installation considerationsRough In Dimensions Rough-In-DimensionsClearances Locating the Water HeaterCirculation Pumps NSF Leg KitInsulation Blanket Hard WaterBreathing Hazard Carbon Monoxide Gas High Altitude InstallationsInstallation Requirements Thermal Expansion Temperature-Pressure Relief ValveDishwashing Machines Closed Water SystemsCombustible Material Storage Contaminated AirValve Discharge Pipe Requirements Venting Air RequirementsUnconfined Space Confined SpaceOutdoor Air Through Two Horizontal Ducts Multiple Heater Manifold Outdoor Air Through One OpeningFresh Air Openings for Confined Spaces Outdoor Air Through Two OpeningsAir From Other Indoor Spaces Outdoor Air Through Two Vertical DuctsMultiple Gas Fired Tank-Type Heaters Type B GAS VentModel ABCL3 85T275 6NOX Water heater installation Water Line ConnectionsValve Discharge Pipe Tube Inlet Installation Installation Diagrams Top Inlet/Outlet UsageHeater Wiring Gas Meter Size Natural Gases Only Gas Line Leak TestingGas Piping PurgingStart up Prior to Start UpInitial Start Up Checking the Input Water Temperature AdjustmentMultiple Appliance Installations Checking VentingLighting & Operating Label Sequence of OperationYES Sequence of Operation Flow ChartIntake Air Screen MaintenanceTemperature-Pressure Relief Valve Test Venting SystemTo Flush the Water Heater Storage Tank Draining and FlushingDeliming Solvents To Drain the Water Heater Storage TankDeliming Using Flo-Jug Method Tank Cleanout ProcedureSystem Diagnostics Ignition Control SystemElectrical Servicing Operational Conditions High Water Temperature Shut OFF SystemFor Your Information Start Up ConditionsTroubleshooting Qualified Service AgencyComplaint Cause Remedy User Water Piping DiagramsTemperature & Pressure Temperature & Pressure Relief Valve Circulating Pump Multi Flue 2 Units Multi Flue 2 Units with Vertical Storage Tank Multi Flue 2 Units with Vertical Storage Tank Return from Multi Flue 2 Units TWO Temperature Multi Flue 2 Units with Booster TWO Temperature MULTI-FLUE 3 Units MULTI-FLUE 3 Units with Vertical Storage Tank MULTI-FLUE 3 Units with Horizontal Storage Tank Multi Flue Flue 4 Units MULTI-FLUE 4 Units with Vertical Storage Tank MULTI-FLUE 4 Units with Horizontal Storage Tank Model Dimension a Page Conditions and Exceptions Service and Repair ExpensesClaim Procedure ALL Other Parts

BCL3 95T199 6NOX, BCL3 85T390 6NOX, BCL3 85T275 6NOX specifications

American Water Heater Company has been a leader in the production of high-quality water heaters for residential and commercial use. Among their acclaimed collection are three notable models: the BCL3 85T275 6NOX, BCL3 85T390 6NOX, and BCL3 95T199 6NOX. Each of these models is meticulously designed, providing efficient heating solutions while prioritizing safety and environmental responsibility.

The BCL3 85T275 6NOX is an advanced model that offers a remarkable 275,000 BTU output, making it suitable for a variety of applications, from single-family homes to larger commercial settings. This unit features a powerful water heating capacity and is equipped with a robust heat exchanger that maximizes thermal efficiency. One of its key technological innovations is the low nitrogen oxide (NOX) emissions system, which significantly reduces harmful emissions, thereby complying with stringent environmental standards.

Similarly, the BCL3 85T390 6NOX enhances performance with a higher BTU output of 390,000. This capacity allows it to effectively serve larger facilities with higher demand for hot water. The technology behind this model includes an automatic flue damper that optimizes energy use by adjusting the airflow, resulting in improved combustion efficiency. Additionally, its durable construction ensures long service life, catering to the needs of both residential users and commercial operations.

The BCL3 95T199 6NOX, with its 199,000 BTU capacity, combines efficiency with versatility. This unit is designed for a wide range of water heating needs, providing an excellent option for both medium-sized homes and smaller commercial setups. Its unique design incorporates advanced insulation materials that help retain heat longer, thereby enhancing overall efficiency. Like its counterparts, this model is equipped with advanced NOX reduction technology, which makes it an environmentally friendly choice.

All three models share a common theme of reliability and efficiency. Their advanced control systems enable precise temperature management, allowing users to set their desired hot water temperatures with ease. Furthermore, each unit is designed with safety features such as a high-temperature limit switch and electronic ignition, ensuring safe operation.

In conclusion, the American Water Heater BCL3 series — featuring the BCL3 85T275 6NOX, BCL3 85T390 6NOX, and BCL3 95T199 6NOX — showcases the company's commitment to innovation, quality, and environmental stewardship. These models not only meet the demanding needs of consumers but also contribute to a more sustainable future with their low emissions and efficient systems. Whether for residential or commercial use, they are designed to deliver reliable performance year after year.