ROBERTSHAW® 7000 DERHC GAS CONTROL VALVE

FIGURE 10.

WATER LINE CONNECTIONS

Following are detailed installation diagrams 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.

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 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 water under supply pressure.

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 heater is equipped with an approved temperature and pressure relief valve. ASME ratings cover pressure relief. A.G.A ratings cover release rate with temperature actuation.

FOR SAFE OPERATION OF THE WATER HEATER, THE RELIEF VALVE(S) MUST NOT BE REMOVED OR PLUGGED.

In addition to the appliance relief valve, each remote storage tank that may be used in conjunction with this appliance shall also be installed with a properly sized, rated and approved temperature (ANSI) and pressure (ASME) relief valve(s). This relief valve shall comply with the standard for relief valves and automatic gas shut-off devices for hot water supply systems, ANSI Z21.22/CSA 4.4.

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

WARNING

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

A DRAIN 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 DEFECT THE PURPOSE OF THE VALVE AND IS UNSAFE. DISCHARGE LINE SHALL BE INSTALLED TO ALLOW COMPLETE DRAINAGE OF BOTH THE VALVE AND LINE.

®Robertshaw is a registered trademark of the Robertshaw Controls Company Corporation

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A.O. Smith BTP(V)-540A, 650A, 740A warranty Water Line Connections, Relief Valve, System Connections
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BTP(V)-540A, 650A, 740A specifications

A.O. Smith is renowned for its innovative water heating solutions, and the 650A, 740A, and BTP(V)-540A models exemplify this legacy. These water heaters are designed with advanced technology and feature a range of specifications tailored to meet diverse heating needs.

The A.O. Smith 650A model stands out with its efficient design and high-capacity heating capabilities. It is equipped with a powerful heating element that ensures rapid water heating, allowing consumers to enjoy hot water without long waits. The unit's tank is insulated with durable materials, which minimizes heat loss and enhances energy efficiency. Additionally, it incorporates a glass-lined tank that resists corrosion and extends the lifespan of the water heater, making it a reliable choice for households.

Moving on to the 740A model, this unit is designed for larger applications and can accommodate significant hot water demands. Its advanced heating technology includes an impressive recovery rate, which enables it to supply hot water even during peak usage times. The 740A is also equipped with smart diagnostics that monitor the system's performance, ensuring optimal operation and identifying potential issues before they escalate. This feature enhances user convenience and reduces maintenance costs.

The BTP(V)-540A takes efficiency one step further with its unique heat pump technology. It captures ambient heat from the surroundings to heat water, significantly reducing energy consumption compared to traditional electric water heaters. This eco-friendly model is ideal for those looking to lower their energy bills without sacrificing performance. The BTP(V)-540A also features a user-friendly digital display that allows users to easily adjust settings and monitor performance.

In summary, the A.O. Smith 650A, 740A, and BTP(V)-540A models showcase the brand's commitment to quality, efficiency, and innovation. Each model comes with distinct features tailored to different household requirements. With advanced heating technologies, robust construction, and user-friendly interfaces, these water heaters represent some of the best options available in the market for ensuring a reliable hot water supply. A.O. Smith continues to set the bar high in the water heating industry, making these models a smart investment for any home.
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