Boiler Side Piping SDT models | Lochinvar SDT/SET065

SDT/SET Installation & Operation Manual

3Boiler Side Piping (SDT models)

Figures 3-1 thru 3-4 show typical boiler side piping for several common situations. Regardless of which system is used it is imperative that the flow rates called for in Table 3C are developed through the coil. This requires properly sized piping and a properly sized pump.

The system shown in FIG’s 3-1 thru 3-4 are described below:

Zone with Circulator to Aquastat

This system is like the circulator zone system on a straight heat job except that one of the zones goes to the tank instead of radiation. As on any circulator zone system check valves should be installed in each zone to prevent unwanted circulation through zones which are not calling for heat. Figure 3-1 on page 8 illustrates typical circulator zone piping.

Multiple Tank Connections (Boiler Side)

Multiple tank installations must be done in the “reverse-return” manner. The reason for this is to create the same pressure drop (and therefore, the same flow) through the coil of each tank. The boiler manifold piping must be sized so that each coil has the flow rate called for in Table 3B.

Because the pressure drop through tank coils varies from size to size, it is hard to predict the flow rate that will be developed through each coil when two tanks of different sizes are placed in the same manifold. For this reason it is best not to mix tanks of different sizes in the same zone if their recovery is critical.

Zone with Valve to Aquastat

As with the circulator zone system, this system is just like a standard heating zone system except that one of the zones is connected to the tank coil as shown in FIG. 3-2 on page

9.The system circulator must be large enough to move boiler water through the coil regardless of the flow rate required through the heating zones.

DHW Prioritization

This piping system is designed to provide direct hot water priority over the other zones in the heating system. When there is a Domestic Hot Water (DHW) call for heat, the Knight control will shut off the boiler circulator and activate the domestic hot water circulator. Once the DHW demand is satisfied, the boiler circulator will be readjusted as demand requires. The circulator must be large enough to move the boiler water through the coil in the tank, and it must meet the minimum boiler flow requirments. The recommended piping for a DHW priority system is depicted in FIG. 3-3 on page 10.

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.