Installation & Operation Manual

8Field wiring

￿WARNING ELECTRICAL SHOCK HAZARD – For your safety, turn off electrical power

supply before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death.

3.

Wire the boiler pump as shown in FIG. 8-2.

4.

When connecting a domestic hot water (DHW) pump,

 

connect the wiring to the line voltage terminal strip as

 

shown in FIG. 8-2.

5.

To activate a system pump, wire as shown in FIG. 8-2. If the

NOTICE

￿CAUTION

Wiring must be N.E.C. Class 1.

If original wiring as supplied with boiler must be replaced, use only type 105°C wire or equivalent.

Boiler must be electrically grounded as required by National Electrical Code ANSI/NFPA 70 – latest edition.

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

motor is larger than 1/8 hp or 1.8 amps, you must isolate

with a relay.

Figure 8-2Line Voltage Field Wiring Connections

Figure 8-1Remove Bezel

REMOVE BEZEL

Installation must comply with:

1.National Electrical Code and any other national, state, provincial, or local codes, or regulations.

2.In Canada, CSA C22.1 Canadian Electrical Code Part 1, and any local codes.

Line voltage connections

1.Remove bezel as shown in FIG. 8-1.

2.Connect 120 vac power wiring to the line voltage terminal strip in the junction box, as shown in FIG. 8-2.

2.Provide and install a fused disconnect or service switch (15 amp recommended) as required by the code (see FIG. 8-2).

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Low voltage connections

1.Route all low voltage wires through the knockouts in the bottom front right side, just under the control panel, as shown in FIG. 8-3.

2.Connect low voltage wiring to low voltage connection board as shown in FIG. 8-4 on page 53 of this manual and the boiler wiring diagram.

Figure 8-3Routing Field Wiring

LOW VOLTAGE

CONNECTION BOARD

LOW VOLTAGE

WIRING KNOCKOUTS

LINE VOLTAGE

JUNCTION BOX

LINE VOLTAGE

WIRING KNOCKOUTS

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Lochinvar 51 Field wiring, Installation must comply with, Line voltage connections, Low voltage connections

51 specifications

Lochinvar 51 is an innovative and robust residential boiler system designed for high-efficiency heating needs. A popular choice among homeowners, the Lochinvar 51 stands out in the market due to its advanced features and eco-friendly technologies.

One of the main features of Lochinvar 51 is its compact design, making it ideal for installation in limited space environments such as attics or closets. Despite its small footprint, it boasts a powerful heating capacity, suitable for varying home sizes. The boiler operates with a modulating gas burner that allows it to adjust its heat output according to the demand, ensuring efficiency and comfort throughout the day.

The Lochinvar 51 employs a cutting-edge heat exchanger made from stainless steel, which is highly durable and resistant to corrosion. This design not only enhances the boiler's performance but also increases its lifespan. The unit offers impressive AFUE (Annual Fuel Utilization Efficiency) ratings, showcasing its capability to convert a significant portion of fuel into usable heat, thus minimizing energy waste and reducing heating costs.

Technologically, the Lochinvar 51 is equipped with advanced control systems that facilitate precise temperature management. The intuitive interface allows homeowners to easily set their desired temperature and monitor the system’s performance. Additionally, the integration of outdoor reset technology helps optimize energy consumption by adjusting the water temperature based on outside weather conditions, leading to further energy savings.

Safety features are also paramount in the Lochinvar 51. It includes built-in safeguards that monitor pressure and temperature, automatically shutting down the system in case of any irregularities. This not only protects the boiler but also ensures peace of mind for users.

Moreover, Lochinvar 51 supports compatibility with smart home systems, providing homeowners with remote control capabilities via mobile devices. This innovative feature enhances user convenience, allowing for easy adjustments and monitoring of the heating system from anywhere.

In conclusion, the Lochinvar 51 is an exceptional choice for homeowners looking for a reliable, efficient, and technologically advanced heating solution. With its impressive heating capacity, durable design, and innovative control features, it sets a high standard in residential boiler performance, making it a top contender in today’s market.