SDT/SET Installation & Operation Manual

4Domestic Side (Tank) Piping

NOTICE Verify that the combination temperature and pressure relief valve complies with local codes. If the combination temperature and pressure relief valve does not comply with local codes, replace it with one that does. Follow the installation instructions in this section.

Do not place a valve between the combination temperature and pressure relief valve and the tank.

Determine T&P relief valve size by the following specifications, unless they conflict with local codes:

-SDT/SET065/080/119 - 3/4" NPT with a minimum CSA Rating of 200,000 Btu/hr.

NOTICE

The Lochinvar SDT/SET series water

heaters will absorb/store less than 200,000

 

 

Btu/hr when domestic water outlet

 

temperature is 210°F and boiler water

 

supply temperature is 240°F. Listed

 

outputs are based on ASME Section VIII

 

Interpretation VIII-1-86-136. Check

 

with local codes for applicability.

Standard Installation

•Install the T&P relief valve in the connection marked “Relief Valve”.

T&P Relief Valve Discharge Piping

T&P relief valve discharge piping must be:

-made of material serviceable for a temperature of 250°F or greater.

-directed so that hot water flows away from all persons.

-directed to a suitable place for disposal.

-installed so as to allow complete draining of the T&P relief valve and discharge line.

-terminated within 6" of the floor.

T&P relief valve discharge piping must not be:

-excessively long. Using more than two (2) elbows or 15 feet of piping can reduce discharge capacity.

-directly connected to a drain. Refer to local codes.

-subject to freezing.

Do not install any valve between the T&P ￿ WARNING relief valve and the tank connection or on

the T&P relief valve discharge piping. Improper placement and piping of T&P relief valve can cause severe personal injury, death or substantial property damage.

Table 4A

Minimum Relief Valve (CSA Rating)

Model

BTU/hr

 

 

SDT/SET065

200,000

 

 

SDT/SET080

200,000

 

 

SDT/SET119

200,000

￿CAUTION

The T&P relief valve is not intended for constant duty, such as relief of pressure due to repeated normal system expansion. Correct this condition by installing a properly sized expansion tank in a domestic water system. Refer to the expansion tank manufacturer’s installation instructions for proper sizing.

Failure to install and maintain a new, listed ￿ WARNING 3/4" X 3/4" temperature and pressure relief

valve will release the manufacturer from any claim which might result from excessive temperature and pressures.

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Lochinvar SDT/SET065 - 119 operation manual Relief Valve Discharge Piping
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SDT/SET065 - 119 specifications

The Lochinvar SDT/SET065 - 119 is a sophisticated heating solution that combines efficiency, reliability, and innovative technology to meet the demands of modern residential and commercial applications. As a participant in the highly competitive heating market, Lochinvar has established a reputation for producing high-quality products, and the SDT/SET065 - 119 is no exception.

One of the main features of the Lochinvar SDT/SET065 - 119 is its high-efficiency operation. With an impressive thermal efficiency rating, this unit minimizes energy consumption while maximizing output. This efficiency not only helps in reducing utility bills for users but also contributes to a more sustainable environment by lowering carbon emissions. The design of the unit incorporates advanced heat exchanger technology that optimizes thermal transfer, ensuring that homeowners and businesses receive the precise heating they require.

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User-friendly controls are another highlight of the Lochinvar SDT/SET065 - 119. The unit features advanced digital control technology that allows for easy temperature regulation and monitoring. This technology also enables users to take advantage of multiple operating modes, enhancing both comfort and efficiency. Furthermore, built-in diagnostic capabilities provide real-time feedback on the system’s performance, facilitating easier troubleshooting and maintenance.

Safety is also a key consideration in the design of the SDT/SET065 - 119. The unit includes multiple safety features, such as over-temperature protection and pressure relief systems, ensuring reliable operation without compromising user safety.

In summary, the Lochinvar SDT/SET065 - 119 exemplifies modern heating technology. Its high efficiency, versatility, user-friendly controls, and robust safety features make it an ideal choice for those seeking a reliable and effective heating solution. Whether for residential or commercial use, the Lochinvar SDT/SET065 - 119 stands out as a top-tier option in the heating market.
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