Installation & Operation Manual

6 Hydronic piping

Figure 6-7Multiple Boilers - Single Temperature Zoned with Circulators - DHW Priority

 

 

 

Number of Units

 

Model

2

3

4

5

6

7

8

 

 

Required Pipe Sizes

 

55

1-1/4"

1-1/2"

1-1/2"

2"

2"

2"

2"

85

1-1/4"

1-1/2"

2"

2"

2"

2-1/2"

2-1/2"

110

1-1/2"

2"

2"

2-1/2"

2-1/2"

2-1/2"

3"

155

2"

2"

2-1/2"

2-1/2"

3"

3"

4"

199

2"

2"

2-1/2"

3"

4"

4"

4"

285

2-1/2"

2-1/2"

3"

4"

4"

4"

5"

399

2-1/2"

3"

4"

4"

5"

5"

5"

 

 

ZONE #1

 

 

PRESSURE

 

 

 

 

REDUCING VALVE

PRESSURE

ZONE #2 ZONE #3 ZONE #4

 

BACKFLOW

GAUGE

 

 

 

 

PREVENTER

 

 

 

 

MAKE UP

 

 

 

FLOW CHECK

WATER

 

 

 

 

 

 

VALVE

SYSTEM SUPPLY

 

 

 

(TYPICAL)

SENSOR

 

 

 

 

AIR SEPARATOR

 

 

 

ZONE CIRCULATORS

 

 

 

 

(TYPICAL)

 

EXPANSION

 

 

 

 

TANK

 

 

BALL VALVE

 

MAY SUBSTITUTE LOW LOSS HEADER

 

(TYPICAL)

 

NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART

DRAIN POINT

 

 

 

 

 

(TYPICAL)

 

 

ANTI-SCALD

 

 

 

 

HOT

 

 

Y-STRAINER

MIXING VALVE

 

 

 

WATER

 

 

(RECOMMENDED)

 

 

 

 

OUT

 

 

(TYPICAL)

DOMESTIC

 

 

 

 

 

 

HOT WATER

 

BOILER

 

CIRCULATOR

COLD

CIRCULATOR

 

 

WATER

 

PRESSURE

 

 

IN

RELIEF VALVE

 

 

 

BOILER 2

BOILER 1

(MEMBER 1)

(LEADER)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INDIRECT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DRAIN

 

 

TEMPERATURE /

 

 

 

 

 

 

DHW TANK

 

 

 

 

 

UNION

 

 

 

 

 

 

PRESSURE

 

 

 

 

(TYPICAL)

 

 

 

 

 

GAUGE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTICE

Please note that these illustrations are meant to show system piping concept only, the installer is responsible for all equipment and detailing required by local codes.

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Image 42
Lochinvar WH 55-399 operation manual Boiler Member
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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.
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