American Water Heater Commercial Ultra Low NOx Gas water Heater Not Enough or no HOT Water

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TROUBLESHOOTING

For your safety, water heater service should be performed only by a qualified service technician.

Read the GENERAL SAFETY INFORMATION section first.

PROBLEM

POSSILBE MALFUNCTION

SERVICE TO BE PERFORMED

 

1) Blower will not run.

 

 

A) "ON/OFF" control switch turned off.

Turn switch to the on position.

 

B) Blower unplugged.

Plug blower back into 115 vac. outlet.

 

C) No power at outlet.

Repair service to outlet.

 

D) "ON/OFF" switch defective.

Replace switch.

 

E) Control harness defective.

Replace control harness.

 

F) Blower motor defective.

Replace blower and motor.

 

2) Blower running, burner not on

Replace switch.

 

A) Fan not running fast enough to close

Check for low voltage, less than 102 vac.,

 

air switch contacts.

have service checked and repaired.

 

B) Air pressure switch defective.

Replace switch.

 

C) Gas valve defective.

Replace gas control valve/ thermostat.

NOT ENOUGH OR NO HOT WATER

D) Control harness defective.

Replace harness.

E) Igniter defective.

Replace ignitor.

 

 

F) Unit has completed three trials to light

Reset cycle by turning switch off and then

 

and fail.

back on. If unit does not light in three tri-

 

 

als, contact a qualified person for service.

 

3) Thermostat problems

 

 

A) Thermostat set too low.

Set temperature control higher.

 

B) Thermostat or ECO defective.

Replace gas control valve/thermostat.

 

C) High limit control circuit open.

Replace high limit control.

 

4) Others

 

 

A) Heater undersized.

Reduce hot water usage.

 

B) Low gas pressure.

Contact a qualified person for service.

 

C) Incoming water is unusually cold.

Allow more time for heater to re-heat.

 

D) Leaking hot water pipes or fixtures.

Have plumber check and repair leaks.

CONDENSATION

A) Water on the floor under heater.

See "Condensation"

 

Improperly sealed, hot or cold supply

Turn off heater & water, repair unit.

 

connections, relief valve, drain valve or

 

WATER LEAKS

thermostat threads.

 

Leakage from other appliances or water

Inspect other appliances near water

 

 

lines.

heater.

 

Condensation of flue products.

Refer to "CONDENSATION"

 

Thermal expansion in closed water sys-

Install thermal expansion tank (DO NOT

LEAKING T&P VALVE

tem

PLUG T&P VALVE)

Improperly seated valves

Check relief valve for proper operation

 

 

 

(DO NOT PLUG T&P VALVE)

HOT WATER ODORS OR COLOR

High sulfate or mineral content in water

Drain and flush heater thoroughly, chlori-

supply or iron or sulfate reducing bacteria

nate, refil and flush again then chlorinate

(Refer to CATHODIC PROTECTION)

in water supply

water supply.

 

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Contents Notify Owner to Keep for Future Reference Place These Instructions Adjacent to HeaterRecovery Ratings Input Rate DimensionsGAS and Electrical Characteristics TOP ViewTable of Contents Installation Instructions Hard Water ClearancesAIR Requirements Unconfined SpaceVent Connection VentingRelief Valve Combination Water Potable Heating Space HeatingGAS Piping System ConnectionsWiring Diagram and Schematic Heater WiringGAS Pressure Regulator PurgingTo Operate the Heater GAS Meter Size Natural Gases onlyWhat to do if YOU Smell GAS For Your Safety Read Before OperatingChecking Venting Temperature RegulationHigh Temperature Limit Switch ECO Service InformationMain Burner and Igniter Checking GAS InputPreventive Maintenance FLO-JUG Method of Deliming Tank Cleanout ProcedureAnode ChecklistCondensation Service and Repair TroubleshootingGAS and Electric Power are ON,OFF/ON Switch is on Water Heating CycleCondensation Not Enough or no HOT WaterWater Leaks Leaking T&P ValveTrouble Shooting Troubleshooting GuidelinesD E F Black resistor wire between pins 3 & 4 with an ohm meterUnplug the ignitor assembly plug from the control. Check Page Page Claim Procedure Service and Repair ExpensesALL Other Parts Conditions and Exceptions

BBCN375T754NV, Commercial Ultra Low NOx Gas water Heater specifications

The American Water Heater BBCN375T754NV is a standout in the realm of commercial water heating solutions, specifically designed to meet the demands of businesses requiring high efficiency and reliability. This ultra-low NOx gas water heater is engineered to reduce nitrogen oxide emissions, adhering to strict environmental regulations, which makes it an ideal choice for those conscious of their ecological footprint.

One of the main features of the BBCN375T754NV is its impressive capacity of 75 gallons, making it suitable for various commercial applications, including restaurants, hotels, and manufacturing facilities. This model is built to provide a consistent and rapid supply of hot water, ensuring that users have access to the hot water they need without interruption.

The heater is equipped with a powerful gas burner system, providing an input of 375,000 BTUs per hour, which guarantees robust performance even during peak demand times. This high input rate allows for quick recovery and reduces waiting times for hot water delivery, an essential factor in maintaining operational efficiency.

In terms of technology, the BBCN375T754NV incorporates advanced combustion management systems that optimize gas consumption and efficiency. This ensures that the heater operates at maximum capacity while minimizing energy waste. Additionally, the unit features a robust insulation system designed to reduce heat loss, further contributing to its energy-efficient performance.

Another important characteristic of this water heater is its durable construction. Made from high-quality materials, including a glass-lined tank for corrosion resistance, the BBCN375T754NV is built to withstand the rigors of a commercial environment. The unit comes with a built-in anode rod to enhance longevity and minimize maintenance needs.

Furthermore, the heater includes an easy-to-navigate digital display that simplifies temperature adjustments and monitoring. This feature enables operators to easily manage the system settings, ensuring optimal performance and safety.

To sum up, the American Water Heater BBCN375T754NV is designed for those who need an efficient, reliable, and environmentally friendly solution to their commercial hot water requirements. With its high capacity, advanced technologies, and durable design, it stands as a robust option for businesses looking to enhance their water heating systems while adhering to environmental standards.
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