•Where a separate vent connection is not available and the vent pipe from the heater must be connected to a common vent with an oil burning furnace, the vent pipe should enter the smaller common vent or chimney at a point above the large vent pipe.

MULTIPLE HEATER MANIFOLD

When horizontally manifolding two or more heaters vent as shown in Figure 8. Refer to NFPA 54/ANSI Z223.1 for venting multiple heaters.

FIGURE8

WATER LINE CONNECTIONS

This manual provides detailed installation diagrams (see pages 12-17 of this manual) for typical methods of application for the water heaters.

The water heater may be installed by itself, or with a separate storage tank, on both single and two-temperature systems. When used with a separate storage tank, the circulation may be either by gravity or by means of a circulating pump. When a circulating pump is used it is important to note that the flow rate should be slow so that there will be a minimum of turbulence inside the heater.

If a water heater is installed in a closed water system, contact the water supplier or local plumbing inspector on how to control this situation.

WATER (POTABLE) HEATING

AND SPACE HEATING

1.All piping components connected to this unit for space heating applications shall be suitable for use with potable water.

2.Toxic chemicals, such as those used for boiler treatment, shall NEVER be introduced into this system.

3.This unit may NEVER be connected to any existing heating system or component(s) previously used with a non-potable water heating appliance.

4.When the system requires water for space heating at temperatures higher than required for domestic water purposes, a tempering valve must be installed. Please refer to installation diagrams on pages 12 thru 17 of this manual for suggested piping arrangements.

CAUTION

A closed system will exist if a check valve (without bypass), pressure reducing valve (without bypass), or a water meter

(without bypass) is installed in the cold water line between the water heater and street main (or well).

Excessive pressure may develop in such closed systems, causing premature tank failure or intermittent relief valve operation. This is not a warranty failure. An expansion tank or a similar device may be required in the inlet supply line between the appliance and the meter or valve to compensate for the thermal expansion of the water.

SYSTEM CONNECTIONS

The system installation must conform to these instructions and to the local code authority having jurisdiction. Good practice requires that all heavy piping be supported.

THERMOMETERS (Not Supplied)

Thermometers should be obtained and field installed as shown in the installation diagrams.

Thermometers are installed in the system as a means of detecting the temperature of the outlet water supply.

RELIEF VALVE

This water heater is equipped with a combination temperature-pressure relief valve that complies with the standard for relief valves and automatic gas shutoff devices for hot water supply system, ANSI Z21.22. FOR SAFE OPERATION OF THE

WATERHEATER,THERELIEFVALVE(S)MUSTNOTBEREMOVED ORPLUGGED.

ASME ratings cover pressure relief capacities. A.G.A. ratings cover release rate with temperature actuation.

In addition to the appliance relief valve, each remote storage tank which may be used in conjunction with this appliance shall also be installed with a properly sized, rated and approved combination temperature (ANSI) and pressure (ASME) relief valve(s).

WARNING

THE PURPOSE OF RELIEF VALVE IS TO AVOID EXCESSIVE PRESSUREORTEMPERATUREINTOTHESTEAMRANGE,WHICH MAY CAUSE SCALDING AT FIXTURES, TANK EXPLOSION, SYSTEM OR HEATER DAMAGE. NO VALVE IS TO BE PLACED BETWEEN THE RELIEF VALVEAND TANK.

Your local code authority may have other specific relief valve requirements.

ADRAIN LINE MUST BE CONNECTED TO THE RELIEF VALVE TO DIRECTDISCHARGETOASAFELOCATIONTOAVOIDSCALDING OR WATER DAMAGE. THIS LINE MUST NOT BE REDUCED FROM THE SIZE OF THE VALVE OUTLET AND MUST NOT CONTAIN VALVES, RESTRICTIONS NOR SHOULD IT BE LOCATED IN FREEZING AREAS. DO NOT THREAD OR CAP THE END OF THIS LINE. RESTRICTED OR BLOCKED DISCHARGE WILL DEFEAT THE PURPOSE OF THE VALVE AND IS UNSAFE. DISCHARGE LINE SHALLBE INSTALLED TOALLOW COMPLETE DRAINAGE OF BOTH THE VALVEAND LINE.

See SERVICE INFORMATION section for procedure and precautions.

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A.O. Smith SBD 30 150 Multiple Heater Manifold, Water Line Connections, Water Potable Heating Space Heating, Relief Valve
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SBD 30 150 specifications

The A.O. Smith SBD 30 150 is a high-efficiency water heater designed to meet the hot water needs of residential applications. Renowned for its reliability and performance, this model exemplifies A.O. Smith's commitment to innovative technology and energy efficiency.

One of the standout features of the A.O. Smith SBD 30 150 is its capacity. With a 30-gallon tank, it is ideally suited for small to medium-sized households. This makes it an excellent choice for families or individuals who require a steady supply of hot water for various applications like bathing, cooking, and cleaning.

The SBD 30 150 is equipped with a powerful, efficient heating element that delivers quick recovery rates. This means that users can expect hot water when they need it without long waiting times. The advanced insulation technology employed in its design reduces heat loss, allowing the unit to maintain a steady temperature and operate at optimal efficiency.

Energy efficiency is a key characteristic of the A.O. Smith SBD series. It features Energy Star certification, demonstrating its ability to provide hot water while minimizing energy consumption. Users can enjoy the dual benefit of reduced energy bills and a smaller carbon footprint. This model is particularly appealing to eco-conscious consumers looking to integrate green technologies into their homes.

In terms of durability, the SBD 30 150 is built with high-quality materials designed to withstand the test of time. Its glass-lined tank provides excellent corrosion resistance, which is essential for extending the lifespan of the unit. Additionally, the heater includes a durable anode rod, which serves to protect the tank from galvanic corrosion, further enhancing its longevity.

Convenience features are also notable in this model. It comes with a thermostat that allows for easy temperature control, enabling users to set the preferred hot water temperature without hassle. Moreover, the compact design of the SBD 30 150 makes it easy to install in various settings, whether it’s a small utility area or a basement.

In conclusion, the A.O. Smith SBD 30 150 water heater stands out as a practical and efficient solution for anyone in need of reliable hot water. With its impressive features, energy-saving technologies, and robust design, it is a smart investment for long-lasting performance and comfort in everyday life.
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