Thermistor Wiring

EcoStor2™ Solar

This section is intended to provide a better understanding of the solar thermal design application and how it varies from the base model listed on page 3.

Solar Thermistor Wiring

The solar with gas backup water heater comes provided with two sets of twisted thermistor wiring. They are color coded for ease of use.

Brown and Orange twisted

thermistor wires

The solar with gas backup models come with an internal double-wall heat exchanger. Brown thermistor wiring is provided under an access panel between the solar heat exchanger connections. A thermistor (not included) wired to this pair can be connected to the solar control to determine the temperature differential between the tank and the solar collector. The control can then activate a circulator to heat the tank. To assist in connecting the thermistor, the end has a supplied wire nut. A bracket and plate is supplied to mechanically press the thermistor against the tank wall.

A twisted orange wire set is provided under the upper access panel. Some solar controllers have locations for a second tank temperature input. This is not used for controlling the solar thermal system, but helps the end user understand what an anticipated delivered temperature may be.

Upper Access Location	Lower Access Location
(Orange Twisted Pair)	(Brown Twisted Pair)

SDW2504T, SDW275S, SDW265T, SDW2TW50T, SDW2TW65T specifications

Bradford-White Corp is a well-respected name in the water heating and storage industry, known for its commitment to innovation and energy efficiency. Among its noteworthy offerings are the SDW2TW75T, SDW265T, SDW275S, SDW2TW65T, and SDW2504T models, each designed to meet diverse hot water needs with reliability and superior performance.

The SDW2TW75T is a 75-gallon commercial electric water heater that ensures an ample supply of hot water for large facilities. It features a dual-element design, which allows for efficient heating even in high-demand situations. Constructed with a high-quality tank and sophisticated insulation, the SDW2TW75T minimizes heat loss, maximizing energy efficiency.

In the lineup, the SDW265T stands out with its advanced electronic controls, providing real-time monitoring and precise temperature management. This model is designed for medium to large commercial applications, ensuring consistent performance with a focus on energy conservation. Its durability is further enhanced by Bradford-White’s signature factory-installed insulation, which helps optimize heating efficiency.

Similarly, the SDW275S offers a robust design for high-demand hot water applications. It features a patented Hydrojet Total Performance System, which helps increase efficiency by reducing sediment buildup within the tank. This technology ensures longer-lasting performance and fewer maintenance issues over time, making it a cost-effective choice for businesses.

The SDW2TW65T caters to businesses that require a dependable hot water supply without compromising on space. With a 65-gallon capacity, it is ideal for medium-sized operations. This unit also incorporates advanced safety features, including a temperature and pressure relief valve, ensuring secure and effective operation.

Lastly, the SDW2504T is designed for applications where compact size meets heavy-duty heating needs. With a 50-gallon capacity, this model is perfect for establishments that need a reliable hot water source in a limited footprint. It employs enhanced insulation and energy-efficient heating elements, allowing for quick recovery rates.

In summary, the Bradford-White SDW series represents a leap forward in commercial water heating technology. With models tailored to varying capacities and features, Bradford-White provides solutions built to enhance operational efficiency, ensure longevity, and deliver reliable hot water suitable for diverse applications. These units exemplify the brand’s commitment to quality and performance, making them an excellent investment for any commercial establishment.