Outdoor Knight Boiler Installation & Operation Manual

3 Hydronic piping (continued)

Figure 3-3Pressure Drop vs. Flow

Pressure Drop vs. Flow (Includes Secondary Piping)

Head)

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151

211

286

Flow Rate (GPM)

Table 3A Circulator Recommendations for Temperature Rise Applications_20°, 25°, and 35°

20°F Temperature Rise Applications

Model

GPM

FT/HD

Minimum Pipe

 

Pump

 

 

Size

Grundfos

TACO

B & G

Armstrong

 

 

 

151

14

20

1"

UPS26-99F

0011

NRF-36

E7

211

20

29

1"

UPS32-160

1400-50

PL-55

E9*

286

27

15

1-1/4"

UPS32-80

1400-20

PL-36

E11

*NOTICE

These pumps are only slightly above 20° rise flows, but are the closest available. To reach a 20° rise or less, an upsized pump will be required.

25°F Temperature Rise Applications

Model

GPM

FT/HD

Minimum Pipe

 

Pump

 

 

Size

Grundfos

TACO

B & G

Armstrong

 

 

 

151

11

13

1"

UPS26-99F

0014

NRF-36

E7

211

16

19

1"

UPS26-99F

0013

NRF-36

E7

286

21

12

1-1/4"

UPS26-99F

0011

NRF-36

E7

35°F Temperature Rise Applications

Model

GPM

FT/HD

Minimum Pipe

 

Pump

 

 

Size

Grundfos

TACO

B & G

Armstrong

 

 

 

151

8

10

1"

UPS15-58FC

008/0010

NRF-36

Astro-30

211

11

9

1"

UPS15-58FC

0010

NRF-36

Astro-50

286

15

7

1-1/4"

UP26-64F

008/0010

NRF-36

E7

NOTICE

NOTICE

NOTICE

Pumps listed in bold type are provided by the factory as the boiler circulation pump on standard altitude models.

Pumps listed in italicized type are provided by the factory as the boiler circulation pump on high altitude models.

The temperature rise provided by a pump/model combination will decrease by 3% per 1000 feet of elevation.

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Lochinvar 151-286 operation manual Feet, Pressure, Model, Minimum Pipe Pump Size Grundfos, Armstrong

151-286 specifications

Lochinvar 151-286 is a high-efficiency water heater designed for both residential and commercial applications. This model stands out due to its advanced technology, user-friendly controls, and robust construction, making it a reliable choice for those seeking to optimize their hot water supply.

One of the key features of the Lochinvar 151-286 is its impressive heating capacity. With a maximum input of 286,000 BTU/hr, it can efficiently meet hot water demands for a variety of settings, including hotels, restaurants, and other commercial facilities. This substantial output ensures that even during peak usage hours, hot water availability is maximized, reducing wait times and enhancing customer satisfaction.

The water heater utilizes a state-of-the-art condensing technology that maximizes efficiency by capturing and utilizing flue gas heat. This process allows the Lochinvar 151-286 to achieve an impressive thermal efficiency rating of up to 98%. The benefit of such high efficiency translates to significant energy savings and reduced operational costs over time, making it an environmentally friendly option as well.

The Lochinvar 151-286 is equipped with a user-friendly control system featuring advanced microprocessor controls. These controls allow for precise temperature management and monitoring, enabling users to set optimal temperatures according to their specific needs. Additionally, the heater includes built-in diagnostics, allowing for easy troubleshooting and maintenance, which minimizes downtime and extends the life of the unit.

Another standout characteristic of the Lochinvar 151-286 is its durable construction. Built with high-quality materials, including a robust stainless steel heat exchanger, this model is designed to withstand the rigors of daily use. The unit also features a compact design, which facilitates easy installation in various locations, whether it be in a utility closet or alongside existing equipment.

Safety features are paramount in the Lochinvar 151-286, with multiple safeguards in place to protect against overheating and other potential issues. The unit is designed to operate reliably, ensuring peace of mind for users who depend on consistent hot water availability.

In summary, the Lochinvar 151-286 water heater combines high capacity, exceptional efficiency, and user-friendly technology, making it an excellent choice for those seeking reliable hot water solutions. Its advanced features deliver performance and durability that stand out in the competitive market of water heating systems.