8 Field wiring

Installation & Operation Manual

￿WARNING

NOTICE

￿CAUTION

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.

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

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

The water heater 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.

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.

Connect 120 VAC power wiring to the line voltage

 

terminal strip in the junction box, as shown in FIG. 8-1.

2.

Provide and install a fused disconnect or service switch

 

(15 amp recommended) as required by the code (see

 

FIG. 8-1).

3.

The DHW (water heater) pump is shipped loose on all

 

Armor models. Wire the water heater pump as shown in

 

FIG. 8-1.

4.

The Armor water heater is capable of controlling a

 

building recirculation pump (field supplied). Wire the

Figure 8-1Line Voltage Field Wiring Connections

DOMESTIC

SERVICE

 

120V SUPPLY

HOT WATER

 

 

 

 

 

SWITCH

 

LINE

GROUND

NEUTRAL

PUMP

 

 

L2/N

 

 

BK

 

 

W

G

L1

G

W

G

 

 

 

 

 

 

BK

 

 

 

 

 

 

RECIRCULATION

 

 

 

 

 

 

PUMP

L4/N

G L3

 

 

 

 

W

 

 

 

 

 

 

 

 

 

 

G

 

 

 

 

 

 

BK

 

 

 

 

 

 

building recirculation pump as shown in FIG. 8-1.

5. Dry contacts are sized for 1 hp/120V, 2 hp/240V or

15A/120V, 25A/240V.

Low voltage connections

1.Route all low voltage wires through the knockouts in the rear of the water heater, as shown in FIG. 8-2.

2.Connect low voltage wiring to low voltage connection board as shown in FIG. 8-3 on page 51 of this manual and the water heater wiring diagram.

Figure 8-2Routing Field Wiring (Models 151 - 286)

LOW VOLTAGE

CONNECTION BOARD

LOW VOLTAGE

WIRING KNOCKOUTS

LINE VOLTAGE WIRING KNOCKOUTS

48

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Image 48
Lochinvar 151 Field wiring, Installation must comply with, Line voltage connections, Low voltage connections

151 specifications

Lochinvar 151,286 is a notable model in the realm of commercial water heating solutions, designed primarily for large-scale applications. This model incorporates advanced technologies and features that set it apart in terms of efficiency, usability, and reliability.

One of the hallmark features of Lochinvar 151,286 is its high-efficiency system that leverages condensing technology. This technology enables the unit to extract additional heat from exhaust gases, allowing it to operate at an impressive annual fuel utilization efficiency (AFUE) rating. This not only reduces energy consumption, but it also significantly lowers operational costs.

The Lochinvar 151,286 is equipped with a robust stainless steel heat exchanger, which provides both durability and enhanced thermal efficiency. This design withstands the rigors of high-demand environments, making it ideal for restaurants, schools, hospitals, or any facility requiring consistent hot water supply. Its compact footprint allows it to be installed in tight spaces without sacrificing performance.

Another standout characteristic is its intelligent control system. The built-in touchscreen interface offers users an intuitive way to manage settings, monitor performance, and troubleshoot issues. This smart technology aids in simplifying maintenance and improves overall system reliability. The unit also features advanced safety protocols, including multiple sensors that monitor operation and provide alerts in case of irregular performance.

In terms of capacity, the Lochinvar 151,286 can deliver an impressive output, accommodating varying demands with ease. Its innovative modulation capabilities allow the unit to adjust its heating output based on real-time hot water needs, ensuring unmatched comfort and efficiency.

Supporting the model’s performance are versatile connectivity options. Lochinvar 151,286 can integrate seamlessly with building management systems, allowing facility managers to monitor and control heating processes remotely. This level of connectivity not only enhances control but also supports energy-saving strategies across the facility.

In conclusion, Lochinvar 151,286 stands out as a premium choice for commercial water heating needs. With its high-efficiency ratings, durable construction, intelligent control system, impressive capacity, and versatile connectivity, it ensures that hot water is delivered reliably and efficiently, meeting the demands of modern businesses while reducing energy costs. This combination of technology and design makes it an essential component for any large-scale facility focused on performance and sustainability.