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1 . 5 . 2 M A K E U P F I L L V A L V E

A self-contained mechanical float type make up water control is proved to accept incoming water up to a differential pressure of 70 psi (see manufacturer’s date for exact pressures). The make up valve assembly mounts directly into the tank to eliminate unnecessary external piping and can be removed from the outside of the vessel for easy maintenance and inspection. The valve is made of brass or bronze with a copper float that does not require any external power for operation. Optional fill valves may have been supplied with your unit. Please check the specific manufacturer’s literature for the operation of this valve.

1 . 5 . 3 P U M P S

There are two different designs used as standard pumps on Bryan HFS and VFS Feed systems. Horizontal turbine pumps are used primarily for the smaller sized units and vertically centrifugal pumps are used primarily for the larger units. The Bryan CFS feed system utilizes a vertical centrifugal pump that is mounted directly on top of the tank. Please follow the specific manufacturer’s literature for operation and start up of these pumps. It may affect your warranty and the operability of your pump is specific instructions are not followed. Pumps are sized based on approximately two times the boiler evaporation rate of the horsepower shown in the model number and on a maximum feed water temperature of 200 degrees F. Some pumps may need by-pass piping or a throttling valve in the discharge line to keep the pump flow at a satisfactory level on the pump curve. All pump motors supplied are multi-tapped. Therefore, before supplying power to the pumps, make sure the motor is wired for the voltage being supplied.

1 . 5 . 4 S T E A M P R E - H E A T E R A S S E M B L Y ( O P T )

A steam pre-heater assembly may have been provided with the boiler feed system. The assembly includes a combination pressure/temperature regulating valve, stainless steel sparge tube, “y” type strainer, and steam valve. The pressure/temperature regulating valve eliminates the need for a separate pressure regulator and a temperature regulator. Normal operation is controlled by the temperature pilot, and the pressure pilot sets an upper limit on the downstream steam pressure. The regulator is a pilot actuated, diaphragm-operated type with a separate pressure and temperature pilot. The valve is sized based on 100% make-up water being raised 140 degrees F. The stainless steel sparge tube is supplied to reduce noise and the piping and valves are sized based on maximum steam velocity of 7000 ft/min. The valves come shipped loose and proper installation is required for efficient use.

1 . 5 . 5

O T H E R O P T I O N S

 

 

Additional items may have been supplied with your feed system and can be referenced on the equipment list, wiring diagram, and/or dimensional supplied with this manual. If available, the manufacturer’s literature data is supplied with this manual for proper installation and maintenance. Please consult factory if additional information is required.

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Bryan Boilers AH-FS151250D A K E U P F I L L V a L V E, U M P S, T E a M P R E H E a T E R a S S E M B L Y O P T
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AH-FS151250D specifications

The Bryan Boilers AH-FS151250D is a compact, high-efficiency, versatile boiler designed for a wide range of applications in commercial and industrial settings. With a focus on sustainability and energy savings, this model stands out due to its innovative features and advanced technology.

One of the primary characteristics of the AH-FS151250D is its forced circulation design, which enhances the boiler's efficiency and thermal performance. This design promotes uniform heating and prevents hot spots, which can lead to failures and inefficiencies in traditional boilers. The forced circulation system ensures rapid heat transfer, making it ideal for processes requiring quick response times.

Another significant feature of the AH-FS151250D is its modular construction, allowing for easy installation and flexibility in operation. The boiler's compact footprint makes it suitable for facilities with limited space, while its modularity offers scalability. This means that users can easily expand their heating capacity by adding more units as needed.

The AH-FS151250D also boasts advanced control systems that provide precise management of operating conditions. These controls can optimize fuel use, enhance efficiency, and support a variety of fuels, including natural gas, propane, and other gaseous fuels. The integration of sophisticated automation technology helps operators maintain optimal performance while reducing operational costs.

Additionally, the Bryan Boilers AH-FS151250D incorporates advanced insulation materials that improve thermal retention and minimize energy loss. This feature contributes to the boiler's overall efficiency, further supporting sustainability efforts in industrial applications.

Durability is a hallmark of the AH-FS151250D, with a robust construction designed to withstand the rigors of continuous operation. The materials used are resistant to corrosion and high temperatures, ensuring a long lifespan with minimal maintenance requirements.

In summary, the Bryan Boilers AH-FS151250D combines efficiency, flexibility, and durability, making it an excellent choice for various commercial and industrial heating applications. Its innovative features, such as forced circulation, modular design, and advanced control technologies, position it as a leader in the boiler market, supporting users in their quest for sustainable and effective energy solutions.
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