A.O. Smith FMD 30, FMD 40, FMD 50, 315795-000 MH specs

Step 8. Place screwdriver in slot “B”, see Figure 30 on page 19. Depress and turn counterclockwise ( ) to stop. Control screw must be in “IN” position for propane (L.P.) gas and in “OUT” position for natural gas. STOP! Read label “For Your Safety” located on your water heater.

Step 9. Set the thermostat to lowest setting by turning the water temperature dial clockwise, ( ) to its lowest temperature setting (with arrow on dial) as shown.

Step 10. Turn gas control knob clockwise to “OFF” position. Knob cannot be turned from “PILOT” to “OFF” unless knob is depressed slightly. DO NOT FORCE.

Step 11. Wait ﬁve minutes to clear out any gas. If you then smell gas, STOP! Follow “B” in the safety information on “For Your Safety” label. If you don’t smell gas, got to the next step.

Step 12. The pilot is located in front of the burner, see Figure 32 on page 19.

Step 13. If you don’t smell gas, turn knob on gas control

counterclockwise

to “PILOT” position.

Step 14. Push in control knob all the way and hold down. Immediately light the pilot using the Piezo Igniter. Continue to hold control knob in for about one (1) minute after the pilot is lit. Release knob and it will pop back up. Pilot should remain lit. If it goes out, repeat Steps 9 through 12.

•If knob does not pop up when released, stop and immediately call the local gas supplier.

•If the pilot will not stay lit after several tries, depress

and turn the gas control knob clockwise	to
“OFF” and call the gas supplier.

Step 15. Check for gas leaks with only pilot ﬂame burning using soapy water solution, not a match or open ﬂame. Check for gas leaks at ﬁttings “F” and “G”, see Figure 34 page 19 and at ﬁttings “J”, see Figure 31 page 19.

Step 16. Make sure temperature adjustment dial is turned clockwise

( ) in its lowest position, see Figure 30 page 19.

Step 17. Replace outer door.

Step 18. At arm’s length away turn gas control knob to the full “ON” position. WARNING: Do not use gas control knob

to regulate gas ﬂow. Turn temperature adjustment dial

counterclockwise ( ) until gas ﬂows to main burner and ignites.

Step 19. With a soapy water solution, not a match or open ﬂame, check for gas leaks at gas connection “H”, see Figure 31 page 19. If gas leak occurs, turn off immediately by shutting off gas cock at inlet to control, or by turning gas control

knob to “PILOT” pushing down and turning to “OFF”. Repair gas leak as necessary, and repeat Steps 9 through 19.

Step 20. At arm’s length away, set the thermostat to desired setting. The mark ( ) HOT indicative of approx. 120°F (49°C) is preferred starting point. Some local laws may require a lower starting point. If hotter water is desired see the “Temperature Regulation” section in this manual.

Step 21. Replace the outer door if not replaced in Step 17.

Step 22. Remove adhesive label found in conversion kit and place next to rating plate. Mark label indicating for which type gas the water heater is now equipped.

FMD 40, FMD 50, 315795-000 MH, FMD 30 specifications

A.O. Smith is a renowned brand in the field of water heating solutions, offering a range of efficient and durable water heaters tailored to meet diverse consumer needs. Among its extensive lineup, the A.O. Smith FMD series showcases several commendable models, including the FMD 30, FMD 40, and FMD 50, each boasting unique features and advanced technologies.

The A.O. Smith FMD 30 is a compact water heater designed for smaller households or limited spaces. With a 30-gallon capacity, it is engineered to provide ample hot water for everyday needs such as bathing, washing dishes, and laundry. The heater employs advanced insulation technology, ensuring heat retention and energy efficiency. The thermostatic control system allows users to easily adjust the water temperature to their preference, ensuring comfort while promoting safety.

Moving to the A.O. Smith FMD 40, this model offers an increased capacity of 40 gallons, making it an ideal choice for medium-sized families. It incorporates A.O. Smith’s cutting-edge Durapower glass coating, which protects the tank from corrosion, ultimately extending its lifespan. The FMD 40 also features an enhanced heating element design that ensures rapid heating and consistent water temperature, making it perfect for bustling households.

The A.O. Smith FMD 50 takes things a step further, providing 50 gallons of hot water storage and designed for larger families or high-demand applications. This model integrates advanced technology features like a smart thermal control system that optimizes energy usage, ensuring that hot water is available when you need it without unnecessary power consumption. With robust construction materials, the FMD 50 is built to last, even in harsh conditions.

All models in the A.O. Smith FMD series prioritize user convenience. They come equipped with easy-to-read digital displays for monitoring temperature and status, along with built-in safety features such as automatic shut-off mechanisms. Installation is straightforward, and each unit adheres to energy efficiency standards, which help reduce utility bills while being environmentally friendly.

In summary, the A.O. Smith FMD series, including the FMD 30, FMD 40, and FMD 50, represents a commitment to quality and innovation. With their varying capacities and advanced technologies, these water heaters cater to a wide range of household needs, delivering reliable hot water solutions while maintaining energy efficiency and durability. Investing in an A.O. Smith FMD water heater not only guarantees comfort but also highlights a commitment to sustainability.