SDT/SET Installation & Operation Manual

9High Output Piping

High Domestic Hot Water Usage

When a large amount of hot water is required by a Domestic Hot Water system, the dual coil indirect water heater can be piped together when given the high volume needed to satisfy the high load demands. This is achieved by piping the boiler coil and solar coil together. This will enable heat transfer to both the heat exchangers at the same time. This is done by series piping or piping in parallel. A decision must be made to choose a particular system based on the heating coil pressure drop and the desired flows. This type of piping can be done in a solar operation as well as with a boiler to acheive this maximum heat transfer into the water.

Series Piping

With this style of installation, the solar / boiler supply piping is connected to boiler water IN connection. When joining in this operation, all fittings must be no smaller than one-inch in size. Then, the boiler water OUT and the solar water IN are connected. This will join the boiler and soiler coils together. The return water is piped from the solar return to the solar / boiler supply. See FIG. 9-1 on page 26.

NOTICE

For tank operation use the lower

bulbwell to turn the tank on and off.

 

Parallel Piping

With this style of installation, both heat exchanger are used at the same time. Solar / boiler supply piping to the solar water IN and boiler coils will be at the same temperature at the same time. Then, the boiler return and the solar return are piped together again to return the water to the heat source. See FIG 9-2 on page 27.

NOTICE

For tank operation use the lower

bulbwell to turn the tank on and off.

 

The two-pipe reverse return hydronic loop is more balanced and even than the two-pipe direct return hydronic loop. Both heat exchangers receive the same temperature of water so it is the same as the two-pipe return, but with more advantages. One advantage over the two-pipe system is a balanced flow of the reverse return system. This system can have a lower pressure drop for both heat exchangers than the two-pipe system, and it also requires less energy.

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Lochinvar SDT/SET065 - 119 operation manual High Output Piping, Series Piping, Parallel 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.

The SDT/SET065 - 119 also boasts impressive versatility. It can be configured to work with various hydronic heating systems, making it suitable for a wide range of applications, from radiant floor heating to baseboard heating systems. Additionally, the compact design of the unit allows for easy installation and integration into existing systems, without requiring significant modifications.

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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