BTR TANK TYPE HEATERS

SERVICE HANDBOOK

STEP 18B

MAIN GAS VALVE COIL CHECK

PILOT GAS

 

 

 

 

MANIFOLD

 

 

 

 

PRESSURE

 

 

 

 

TAP

 

 

 

 

BLUE

 

 

 

 

WHITE

 

The PV wire is connected to the blue wire

 

RED

 

 

 

 

 

 

 

 

 

 

 

 

The MV/PV wire on the IID is connected to the white wire.

The MV wire is disconnected from the gas valve.

MANIFOLD

GAS

MANIFOLD

PRESSURE

 

 

TAP

STEP 18B. MAIN GAS VALVE COIL CHECK – BTR 500 ONLY

Condition:

Pilot lights

Sparking stops

No main burner ignition Test Procedure:

Power off

Disconnect red, main valve wire from module MV terminal

Meter set to test for DC amperage

10A wire to red gas valve wire, COM wire to MV terminal of ignition module

Turn power on to heater

After pilot lights and sparking stops

IF:

THEN:

.25 to .35 DC Amps is not present

Replace the gas valve

.25 to .35DCA is present

Main burner gas should ignite.

Be certain to correct you meter wire connections and setting before performing further tests.

A.O. Smith Water Products

41

Service Handbook

Irving, Texas ©2000

Training Department

Page 42
Image 42
A.O. Smith 120 trough 500 manual Main GAS Valve Coil Check BTR 500 only

120 trough 500 specifications

A.O. Smith, a renowned leader in water heating solutions, offers a wide range of products tailored to meet diverse needs. Among its most significant offerings is the A.O. Smith 120 through 500 series, which includes various models designed for both residential and commercial applications.

One of the standout features of the A.O. Smith 120 through 500 series is its efficiency. Many models are designed with advanced thermal insulation and heating technologies, which significantly minimize energy loss. This efficiency not only benefits the environment but also helps users save on energy bills, making these water heaters an economical choice for both homeowners and businesses.

The series includes both gas and electric water heaters, allowing users to select the option that best fits their energy preferences and availability. Gas models typically offer faster heating times and are ideal in areas where natural gas is readily accessible. Conversely, electric models come with a variety of voltage options, accommodating different electrical setups and preferences.

A notable technological advancement in the A.O. Smith 120 through 500 series is the incorporation of smart connectivity options. Some models are equipped with Wi-Fi capabilities, allowing users to monitor and control their water heater remotely via mobile apps. This feature provides real-time data, alerts, and updates, ensuring that users have complete control over their water heating needs.

Moreover, durability is a hallmark of the A.O. Smith brand. The tanks are often constructed from high-quality materials designed to resist corrosion. Many models also feature glass lining and protective coatings, which enhance the lifespan of the heater and minimize the risk of leaks.

Safety is another priority for A.O. Smith. The series is equipped with various safety features such as automatic shut-off mechanisms and temperature controls, ensuring that any potential issues are promptly addressed.

Overall, the A.O. Smith 120 through 500 series encapsulates innovation, efficiency, and reliability. With its versatile offerings and advanced features, it stands as an excellent choice for anyone in need of a dependable water heating solution. Whether for home use or in a commercial setting, these models deliver consistent performance and peace of mind.