Flue systems SGS

Installation options

C13

B23

C33

C53

C43

Flue systems SGS

Minimum space requirements

SGS 28-60

Y

 

W

 

V

V

 

W

Y

X

X

SGS 80-100

Y

 

Z

 

T

V

Y

 

W

X

X

A SGS water heater should be installed according category B23, C13, C33, C43 or C53*.

 

SGS 28

SGS 30

SGS 50

SGS 60

SGS 80

SGS 100

 

 

 

 

 

 

 

Concentric

 

 

 

 

 

 

 

 

 

 

 

 

 

Diameter (mm)

80/125

100/150

100/150

100/150

130/200

130/200

 

 

 

 

 

 

 

Max. length (m)

40

40

40

15

15

15

 

 

 

 

 

 

 

Max. 45/90° bends

7

7

7

4

3

3

 

 

 

 

 

 

Parallel (standard diameter)

 

 

 

 

 

 

 

 

 

 

 

 

Diameter (mm)

80

100

100

100

130

130

 

 

 

 

 

 

 

Max. length (m)

25

80

45

25

115

60

 

 

 

 

 

 

 

Lequivalent/bend 90° (m)

3,9

4,6

4,6

4,6

2,4

2,4

Lequivalent/bend 45º (m)

1,1

1,2

1,2

1,2

1,4

1,4

Parallel (larger diameter for more length)

 

 

 

 

 

 

 

 

 

 

 

Diameter (mm)

100

130

130

130

150

150

 

 

 

 

 

 

 

Max. length (m)

100

100

100

100

100

100

 

 

 

 

 

 

 

Lequivalent/bend 90º (m)

4,6

2,4

2,4

2,4

2,6

2,6

Lequivalent/bend 45º (m)

1,2

1,4

1,4

1,4

1,6

1,6

*All SGS are also approved for installations where the unit is supplied without venting materials (C63).

Concentric flues

It is not permitted to use more than the specified number of bends, even when the duct is shorter than the maximum length. A 45° bend is equivalent to a 90° bend.

Parallel flues

-The maximum permissible length should be reduced by the equivalent length of each bend. (Note: for a parallel installation this means that 3 changes in direction amount to 6 bends (3 in the supply duct and 3 in the flue).

-The maximum length also applies if a parallel installation has different supply and flue duct lengths (B23, C53).

-Combined flues (C43) shall be fitted with a condensate drain.

Note: horizontal flue runs must be installed with a fall of at least 5 mm per metre.

 

SGS 28

SGS 30

SGS 50

SGS 60

SGS 80

SGS 100

 

Ø80/125

Ø100/150

Ø100/150

Ø100/150

Ø130/200

Ø130/200

Minimal space for wall duct (mm)

 

 

 

 

 

 

 

 

 

 

 

V

550

550

550

550

640

640

 

 

 

 

 

 

 

W

725

790

790

790

940

940

 

 

 

 

 

 

 

X

1630

2170

2170

2170

2230

2230

 

 

 

 

 

 

 

Y

1460

1480

1480

1480

1620

1620

 

 

 

 

 

 

 

Y *

1010

1030

1030

1030

1170

1170

 

 

 

 

 

Minimal space for roof duct (mm)

 

 

 

 

 

 

 

 

 

 

 

V

1305

1500

1500

1500

1730

1730

 

 

 

 

 

 

 

W

680

1035

1035

1035

1120

1120

 

 

 

 

 

 

 

X

3060

3420

3420

3420

3620

3620

 

 

 

 

 

 

 

X **

2110

2470

2470

2470

2670

2670

 

 

 

 

 

 

 

Y

1575

1415

1415

1415

1560

1560

 

 

 

 

 

 

 

Y **

625

465

465

465

610

610

For the parts numbers of components and flue gas ducts, etc. please refer to the “Maintenance and accessories” chapter.

*Distance without concentric pipe between bend and wall duct.

**Distance without concentric pipe between appliance and roof duct.

subject to change INT/1108/SGS/02

and conditions apply, please refer to our website.

Data

Terms

www.aosmithinternational.com

Page 8
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A.O. Smith SGS - 60, SGS - 50, SGS - 30, SGS - 28 manual Installation options, Minimum space requirements

SGS - 30, SGS - 50, SGS - 28, SGS - 60 specifications

A.O. Smith is a well-known name in the water heater industry, recognized for its commitment to innovation and quality. Among its impressive lineup of products are the SGS-50, SGS-28, SGS-60, and SGS-30 water heaters. Each model is designed with unique features and advanced technologies to meet varying customer needs.

The SGS-50 is a robust water heater designed to provide reliable performance for medium to large households. Featuring a 50-gallon tank, it is equipped with an advanced insulation system that minimizes heat loss and enhances energy efficiency. The SGS-50 is powered by high-efficiency burners that heat water quickly, ensuring you have a constant supply of hot water for showers, dishwashing, and laundry. Its durable construction includes a glass-lined tank to prevent corrosion, further extending its lifespan.

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Lastly, the SGS-30 serves as a versatile option between the smaller SGS-28 and the larger SGS-50. Sporting a 30-gallon tank, it offers an excellent balance of size and efficiency. Like its A.O. Smith counterparts, the SGS-30 comes equipped with energy-efficient burners and enhanced insulation, providing quick heating capabilities and a reliable supply of hot water for various household needs.

In summary, A.O. Smith's SGS series of water heaters—including the SGS-50, SGS-28, SGS-60, and SGS-30—showcases a commitment to quality, efficiency, and customer satisfaction. Each model features advanced technologies tailored to specific household requirements, ensuring that A.O. Smith remains a trusted choice for hot water solutions in homes and businesses alike.