Lochinvar SIT030 Wiring, Indirect water heater sensor setup Knight boiler, Install tank sensor

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Installation & Operation Manual

5 Wiring

Indirect water heater sensor setup (Knight boiler)

CAUTION NOTICE

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.

The sensor supplied contains an Auto Reset High Limit (194°F).

Install tank sensor

The tank sensor is a dual sensor which controls the temperature of the tank from the boiler(see FIG. 4-1). The tank sensor has a built-in high temperature limit set at 194°F.

1. Install the	sensor inside the tank as depicted
in FIG. 5-1.

2.Connect the wire leads to the DHW Tank Sensor (AUX) connection point on the Knight boiler connection board (see FIG. 5-1).

3.The Knight boiler will automatically read the sensor and default the tank temperature setting to 125°F.

4.Adjust the tank setpoint program. Reference the Knight Installation and Operation Manual for a detailed explanation of the tank setpoint program.

Connect tank sensor

1.Turn OFF the power to the unit. Use wire strippers to strip one inch of insulation from the ends of each wire that will be spliced.

2.Splice the two ends of bare wire by twisting them together with a pair of electrical pliers. Turn the pliers three or four times to make a sufficient connection.

3.Attach a wire nut at the point where the two wires have been twisted together. Twist the wire nut until it fits snugly, or until it cannot be twisted any more.

4.Wrap the wire nut and the two wires with electrical tape to secure the connection. Cover any exposed wiring with electrical tape.

Figure 5-1Indirect Water Heater Controlled Using Tank Sensor

TANK BULBWELL

DHW TANK

SENSOR

DHW TANK SENSOR / AUTO RESET HIGH LIMIT

(PLACE SENSOR IN

KNIGHT LOW VOLTAGE

TANK BULBWELL & SNAP

TERMINAL STRIP

CLIP OVER BULBWELL)

INDIRECT TANK	KNIGHT BOILER		15

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Contents Models SIT030 SIT119 Installation & Operation ManualContents Indirect water heater operation Please read before proceedingComponent Materials General informationOperating restrictions Single-wall heat exchangerWater Chemistry Requirements Pre-installationLocating the tank Recommended clearancesPressure Drop Chart Boiler side pipingPressure Drop Values 1Piping Diagram Zoned with Circulators 2Piping Diagram Zoned with Valves 3Knight Boiler Primary / Secondary Piping 4Multiple Tank Connections Multiple tank domestic water piping Domestic side tank pipingBasic domestic piping Domestic water piping for distant fixturesStandard Installation Install drain valveSIT050 105,000 SIT065 200,000 SIT080 SIT119 Btu/hr2Recommended Domestic Water Piping Connect tank sensor WiringIndirect water heater sensor setup Knight boiler Install tank sensor2Wiring for Zone Control Start-up and check-out To Fill the Water Heater MaintenanceMaintenance Schedule Homeowner monthly maintenance to includePerformance data 110 How to properly Size Your Indirect Water HeaterEstimate your peak hour demand as follows Fixture Count GuideFirst Hour Rating 180F Boiler Loop Water Knight Boiler First Hour Rating 180F Boiler Loop Water Universal Sizing First Hour Rating 200F Boiler Loop Water Universal Sizing

SIT030, SIT119 specifications

Lochinvar is a renowned manufacturer of high-efficiency heating solutions, including a range of commercial and residential boilers. Among their offerings are the Lochinvar SIT119 and SIT030 models, which exemplify the brand's commitment to innovation and efficiency in modern heating systems.

The Lochinvar SIT119 is designed for medium to large residential applications, boasting a powerful heating capacity. This model features a robust stainless steel heat exchanger that not only enhances durability but also promotes optimal heat transfer. As part of Lochinvar’s commitment to energy efficiency, the SIT119 incorporates advanced features such as a modulating burner system that adjusts the flame output based on the heating demand, resulting in lower energy consumption and reduced operational costs.

In addition to its efficiency, the SIT119 is equipped with user-friendly controls that allow homeowners and technicians to easily manage and monitor the system. Its intuitive digital display provides real-time information on system performance and diagnostic capabilities, facilitating maintenance and troubleshooting. Furthermore, the SIT119’s compact design enables versatile installation options, making it suitable for various residential spaces.

On the other hand, the Lochinvar SIT030 is tailored for smaller residential applications. Despite its smaller size, it doesn’t compromise on performance or efficiency. This model also features a high-quality stainless steel heat exchanger, ensuring longevity and consistent heating performance. Like the SIT119, the SIT030 utilizes a modulating burner system to optimize energy use, making it an environmentally friendly choice for homeowners seeking effective heating solutions.

One notable characteristic of the SIT030 is its low NOx emission design, which aligns with contemporary environmental standards and helps reduce the carbon footprint associated with heating. Additionally, both models support easy integration with existing heating systems and can be paired with renewable energy sources, such as solar thermal systems, maximizing their efficiency and sustainability.

In summary, the Lochinvar SIT119 and SIT030 models stand out in the heating market, combining advanced technologies with high efficiency and user-friendly features. Their stainless steel construction, modulating burners, compact design, and emissions compliance make them excellent choices for homeowners looking to invest in reliable and eco-conscious heating solutions. With these models, Lochinvar continues to lead in producing innovative products that meet the evolving demands of the heating industry.