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Lochinvar WH 55-399 operation manual Ratings, Knight Wall Mount Boiler Ahri Rating

Models: WH 55-399

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Ratings

A

Installation & Operation Manual

SME

H

Knight Wall Mount Boiler

AHRI Rating

 

 

Input

 

Heating

Net

 

Model Number

 

 

Capacity

AHRI

AFUE

 

MBH

 

MBH

Ratings

%

 

 

 

 

 

Note: Change

 

(Note 5)

 

 

Water,

 

“N” to “L” for

 

 

 

 

 

MBH

 

L.P. gas models.

 

 

 

 

 

 

 

 

Min

 

Max

 

(Note 2, 8)

(Note 3, 8)

(Note 1, 8)

WHN055

11

 

55

51

44

96

 

 

 

 

 

 

 

 

WHN085

17

 

85

79

69

96

 

 

 

 

 

 

 

 

WHN110

22

 

110

102

89

96

 

 

 

 

 

 

 

 

WHN155

31

 

155

144

125

96

 

 

 

 

 

 

 

 

WHN199

40

 

199

186

162

96

 

 

 

 

 

 

 

 

WHN285

57

 

285

265

230

96

 

 

 

 

 

 

 

 

WHN399

80

 

399

379

330

95

 

 

 

 

 

 

 

 

Other Specifications

 

 

 

Vent/Air

Boiler Water

Water

Gas

Size

Content

 

Connections

Connections

 

Gallons

 

 

 

 

 

 

 

(Note 4)

 

 

 

 

2.5

1"

1/2"

2"

 

 

 

 

2.5

1"

1/2"

2"

 

 

 

 

3.5

1"

1/2"

3"

 

 

 

 

3.5

1"

1/2"

3"

 

 

 

 

5.0

1 1/4"

1/2"

3"

 

 

 

 

5.0

1 1/4"

1/2"

3"

 

 

 

 

6.5

1 1/2"

3/4"

4"

 

 

 

 

NOTICE

Maximum allowed working pressure is located on the rating plate.

Notes:

 

7. The Knight Wall Mount boiler input rate, on some models,

 

is reduced for vent lengths beyond the minimum. Two inch

1. As an Energy Star Partner, Lochinvar has determined that

vent will reduce Models WH(N,L) 055, WH(N,L) 085 and

Knight wall mount boilers meet the Energy Star guidelines

WH(N,L)110 by 0.6%, 0.94%, and 1.2% for every 10 feet

for energy efficiency.

of vent. Three inch vent will reduce Models WH(N,L)155,

2. The ratings are based on standard test procedures prescribed

WH(N,L)199 and WH(N,L) 285 by 0.3%, 0.5%, and 0.6%

by the United States Department of Energy.

for every 10 feet of vent. Four inch vent will reduce Model

3. Net AHRI ratings are based on net installed radiation of

WH(N,L) 399 by 0.4% for every 10 feet of vent.

sufficient quantity for the requirements of the building

8. Ratings have been confirmed by the Hydronics Section of

and nothing need be added for normal piping and pickup.

AHRI. Model 399 has a thermal efficiency rating.

Ratings are based on a piping and pickup allowance of 1.15.

9. Knight wall mount boilers comply with the requirements

4. Knight wall mount boilers require special gas venting. Use

of CSD-1 Section CW-400 requirements as a temperature

only the vent materials and methods specified in the Knight

operation control. The manual reset high limit provided

Wall Mount Installation and Operation Manual.

with the Knight wall mount boiler is listed to UL353.

5. Standard Knight wall mount boilers are equipped to operate

 

from sea level to 4,500 feet only with no adjustments. The

 

boiler will de-rate by 4% for each 1,000 feet above sea level

 

up to 4,500 feet.

 

6. High altitude Knight wall mount boilers are equipped

UNIT EQUIPPED FOR

to operate from 3,000 to 12,000 feet only with no field

HIGH ALTITUDE

 

 

adjustments. The boiler will de-rate by 2% for each 1,000

3,000FT TO 12,000FT

feet above 3,000 feet. High altitude models are manufactured

 

with a different control module for altitude operation, but

 

the operation given in this manual remains the same as the

 

standard boilers. A high altitude label (as shown in FIG. A)

 

is also affixed to the unit.

 

6

 

Figure A High Altitude Label Location

 

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Lochinvar WH 55-399 operation manual Ratings, Knight Wall Mount Boiler Ahri Rating
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WH 55-399 specifications

The Lochinvar WH 55-399 is a high-efficiency water heater designed for residential and commercial applications, offering a reliable solution for hot water needs. This model represents an advanced approach to water heating, combining cutting-edge technologies and features that ensure optimal performance and energy efficiency.

One of the standout features of the Lochinvar WH 55-399 is its high thermal efficiency, which is a key factor in reducing energy consumption and operating costs. With an efficiency rating exceeding 90%, this water heater ensures that more energy is converted into usable hot water, making it an environmentally friendly choice.

The WH 55-399 utilizes advanced condensing technology, which allows it to extract additional heat from the exhaust gases before they are expelled. This process not only increases efficiency but also significantly decreases greenhouse gas emissions. The unit is also equipped with an intelligent control system that allows for precise temperature adjustments, ensuring that the user has an optimal supply of hot water while maintaining energy savings.

Another important aspect of this model is its impressive recovery rate. The ability to quickly heat water after a significant draw ensures that users will not experience interruptions in their hot water supply, making it ideal for busy households or commercial environments. This is particularly beneficial in applications requiring consistent hot water availability, such as restaurants or athletic facilities.

The Lochinvar WH 55-399 is designed with durability in mind. Constructed from high-quality materials, this water heater boasts a robust tank lined with corrosion-resistant coatings, extending the lifespan of the unit and reducing maintenance needs. Additionally, it features a reliable gas burner and a well-insulated tank, contributing to its overall efficiency and performance.

Safety is also a priority with the WH 55-399. The unit incorporates multiple safety features, including a flame sensor, automatic shut-off valve, and over-temperature protection, ensuring peace of mind for users.

In summary, the Lochinvar WH 55-399 stands out with its combination of high efficiency, advanced technology, and durable construction. Whether for residential or commercial use, this water heater provides a dependable and cost-effective solution for all hot water needs. Its innovative design and performance characteristics make it a top choice for anyone seeking a premium water heating option.