FIGURE 16.

7.Extend the flue pipe down close to the water heater flue collar, see Figure 17.

FIGURE 17.

8.Slide the securing clamp over the bottom of the flue pipe and pull the pipe down over the flue collar. Locate vent securing clamp in top and secure clamp with sheet metal screw. Tighten nut and bolt clamp until flue pipe is tight in clamp, see Figure 18.

FIGURE 18.

NOTE: All joints for vent piping between roof jack and water heater are sealed from the manufacturer. No additional sealing of vent pipe is necessary.

MANUFACTURED HOME INSTALLED OVER BASEMENT OR CRAWLSPACE - AIR INTAKE THROUGH AN OUTSIDE WALL

ALL 30 AND 40 GALLON (113.56 AND 151.42 LITER) MODELS

3” (7.62 cm) PVC Schedule 40 intake air vent piping:

Optional Kit No. 9002986005 contains a 3” (7.62 cm) PVC Schedule 40-45° vent cap with screen and two 3” (7.62 cm) wall collars.

ALL 50 GALLON (189.27 LITER) MODELS

4” (10.16 cm) PVC Schedule 40 intake air vent piping:

Optional Kit no. 9002987005 contains a 4” (10.16 cm) PVC Schedule 40-45° vent cap with screen and two 4” (10.16 cm) wall collars.

ALL MODELS

1.PVC, ABS or CPVC Schedule 40 piping and fittings are acceptable materials for the intake air vent system.

2.The intake air vent system must terminate horizontally to the outdoors.

3.Remove the screws which attach the wind baffle to the existing metal air intake vent pipe underneath the home. Discard the wind baffle and screws, see Figure 19.

FIGURE 19.

4.Attach a 3” (7.62 cm) or 4” (10.16 cm) PVC street elbow to the metal air intake vent using 3 sheet screws. Continue PVC piping to outside wall and terminate with vent cap and screen, see Figure 20.

3” (7.62 cm) size - 30 and 40 gallon (113.56 and 151.42 Liter) models. 4” (10.16 cm) size - 50 gallon (189.27 Liter) models.

See pages 13 and 14 for cementing instructions

FIGURE 20.

NOTE: Vent cap must be located a minimum of 12” (30.48 cm) above the ground or anticipated snow level.

5.Vertical and horizontal runs must be securely supported at 3 1/2 foot (106.68 cm) intervals, see Figure 21.

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A.O. Smith FMD 40, FMD 50, FMD 30, 315795-000 MH instruction manual ALL 50 Gallon 189.27 Liter Models, ALL Models
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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.
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