Index

thermostat board, and the

measure resistance of

wires for loose, broken, or

heater operates if this wire is

sensor(s) with ohmmeter. Is

shorted wires. Replace

jumpered to the “COM”

resistance between 700 and

sensing bulb or wire harness.

terminal above it, then make

30K ohms (see page 38)?

If necessary.

the following checks to the

Measure water temperature

 

thermostat circuit. This

from tank for an approximate

 

procedure also applies if the

correlation with the table.

 

burners cycle on for short

YES↓

NO→

 

periods, but the water

 

 

 

temperature seems low.

 

 

 

Sensors O.K. Check remote

Disconnect potentiometer

Replace potentiometer.

potentiometer.

leads from electronic control

Reconnect all leads and

 

module. Measure resistance

check out system.

 

of potentiometer with

 

 

ohmmeter. Is resistance

 

 

greater than 4800 ohms at the

 

 

minimum temperature setting

 

 

and less than 50 ohms at the

 

 

maximum temperature setting

 

 

(checks for open or shorts)?

 

 

YES↓

NO→

 

Potentiometer O.K.

 

 

Replace electronic control

 

 

 

module. Reconnect all leads

 

 

 

and check out system.

Temperature Control Checkout

Set the L8104 above water temperature (See page 27) and observe system through one (1) complete cycle. Make sure system operates as desired.

To check the thermistor or thermistor/ECO assembly, compare it’s resistance as measured by an ohmmeter to the water temperature as measured by an accurate thermometer. Thermistor resistance increases as the temperature decreases. The tables below show the correct sensor resistance at various temperatures.

37

Page 36 Page 38
Page 37
Image 37
American Water Heater GAS-FIRED COMMERCIAL WATER HEATER instruction manual Temperature Control Checkout
Page 36 Page 38

GAS-FIRED COMMERCIAL WATER HEATER specifications

American Water Heater offers a range of high-performance gas-fired commercial water heaters designed to meet the needs of a variety of applications, including restaurants, hotels, and industrial facilities. Renowned for their reliability and efficiency, these water heaters are engineered to provide large volumes of hot water consistently and efficiently.

One of the standout features of American Water Heater's gas-fired models is their robust construction. Built with durable materials, these heaters are designed to withstand the rigors of daily use in demanding commercial environments. The units typically have a high-quality glass-lined tank that enhances protection against corrosion, prolonging the water heater's lifespan and ensuring longevity.

Efficiency is at the core of American Water Heater's design ethos. Many models are equipped with advanced burner technologies that promote higher thermal efficiency. Some units boast energy factors exceeding industry standards, minimizing fuel consumption while maximizing output. This not only reduces operational costs but also contributes to environmental sustainability by lowering carbon emissions.

Among the innovative technologies incorporated into these water heaters is a precise temperature control system, which allows for the accurate regulation of hot water supply. This feature is crucial in commercial settings where the demand for hot water can fluctuate significantly. Moreover, features like digital diagnostics and integrated control systems make it easier for operators to monitor performance and troubleshoot problems swiftly, thus reducing downtime.

Safety is paramount in any gas-fired appliance, and American Water Heater prioritizes this with features such as automatic shutoff valves and flame failure protection systems. These safety mechanisms ensure that the units operate reliably while providing peace of mind to users.

American Water Heater's gas-fired commercial water heaters also offer a range of capacities, catering to different operational needs. Models are available in various sizes, ensuring that no matter the volume of hot water required, there is a solution that fits.

In conclusion, American Water Heater's gas-fired commercial water heaters combine durability, efficiency, and advanced technology, making them suitable for a wide array of applications. With their focus on safety and performance, these units stand out as a top choice for businesses seeking a reliable hot water solution.
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