Model ST Series II Electric Steam BoilerThe Precision Boilers’ ST Series II model gives you lots of options. And that gives you exceptional flexibility in design and specification.

The ST is available in ratings from 15kW to 4000kW, and offers efficiency, simple maintenance, and remarkable reliability. And it can be customized with a variety of features for specific applications— including controls that work in conjunction with utilities to take advantage of off-peak power rates.
Key Advantages

• Heavy duty 16 gauge cabinet and structural steel base provides greater strength
• All electrical components are UL listed or recognized
• All units meet CSD-1 requirements
• Optional features and trim available to meet any custom design criteria
• Large control cabinets with ample room for addition of options or field mounted interfaces. All wiring is color-coded and all electrical components are readily accessible for ease of field service
• Individual flanged U-tube design heating element shortens down time for element replacement

Model HW Series II Electric Hot Water Boiler

The Precision Boilers’ HW Series II model gives you lots of options. And that gives you exceptional flexibility in design and specification.

The HW is available in ratings from 15kW to 4240kW, and offers efficiency, simple maintenance, and remarkable reliability. And it can be customized with a variety of features for specific applications— including controls that work in conjunction with utilities to take advantage of off-peak power rates.
Key Advantages

• Heavy duty 16 gauge cabinet and structural steel base provides greater strength
• All electrical components are UL listed or recognized
• All units meet CSD-1 requirements
• Close temperature control because sensor is located in the outlet pipe
• Optional features and trim available to meet any custom design criteria
• Large control cabinets with ample room for addition of options or field mounted interfaces. All wiring is color-coded and all electrical components are readily accessible for ease of field service
• Individual flanged U-tube design heating element shortens down time for element replacement

HWS Electric Hot Water Storage Heater

Model HWS

Hot Water Quickly. And Lots of It.

The Precision Model HWS (Hot Water Storage) Heaters are Commercial Volume Storage Water Heaters designed for industrial, commercial and institutional users who require quantities of service water and preset temperatures.

When the job calls for lots of hot water – when it is called for quickly – when a continuous supply that will not quit at a crucial moment is needed – when downtime or failure will cause you a problem – it is time to think Precision.

We offer a wide range of storage and recovery capacities to meet you job requirements.

For over 50 years, Precision has been supplying hot water to apartments, dormitories, nursing homes, hospitals, motels, schools, universities, restaurants, health care facilities, office buildings, and various kinds of industrial and commercial applications.

These complete Factory-packaged Electric Storage Water Heaters are available in both VERTICAL and HORIZONTAL configurations, and are ASME constructed and National Board Registered for design pressures of your choice of 125 psi or 150 psi. They are constructed under ASME Code Section IV and stamped HLW. Storage capacities are from 125 gallons to 5500 gallons, and recoveries from 62 to 1968 gallons per hour are cataloged with larger sizes available at request to the Factory. Input capacities from 10 kW to 480 kW are cataloged using PRECISION Incoloy-sheathed individually flanged elements in 10, 15, 18 and 20 kW ratings.

Key Advantages

• High volume hot water capability
• Optional features and trim available to meet any custom design criteria
• Two protective tank lining options (Precision Seal & Cement, NSF-61 Compliant)
• Exceptional efficiency ratings
• Capacities from 125 to 5500 gallons
• Dual firing option (steam or hot water coil and electric)
• All electrical components are UL listed or recognized
• Individual flanged incoloy-sheathed elements (75 wsi)

PCW Compac Electric Hot Water Boiler

Model PCW — Compac™ Electric Hot Water Boiler

Small footprint, excellent efficiency

The Precision Boilers’ Compac is an excellent choice for both new and retrofit applications, because its low height and small footprint allow it to fit through doorways and into small areas with ease.

The PCW is available in ratings from 15kW to 720kW, and offers efficiency, simple maintenance, and remarkable reliability. And it can be customized with a variety of features for specific applications— including controls that work in conjunction with utilities to take advantage of off-peak power rates.
Key Advantages

• Small size and low height ideal for retrofit and new construction
• Ratings from 15 kW to 720 kW
• Optional features and trim available to meet any custom design criteria
• Close temperature control because sensor is located in the outlet pipe
• Exceptional efficiency ratings
• Remote monitoring and control options
• Does not require horizontal clearance for element removal
• Heavy duty / 16 gauge cabinet and flanged steel base provide greater structural strength
• All electrical components are UL listed or recognized
• Individual flanged U-tube design heating element shortens down time for element replacement
• Meets CSD-1 requirements (Units greater than 117 kW)

FTS Flextube, Gas/Oil, Steam Boilers

FTS 1, 2, & 3 (25 to 200 BHP)

Precision FTS Series “Flex-Tube” boilers utilize 1 ½” OD tubes (0.105 nom wall thickness) in a serpentine tube configuration designed to absorb thermal shock. The pressure vessel is warranted against thermal shock for 25 years. The FTS Series boilers also utilize a unique 5-pass tube design with upper headers located on the left or right side. The serpentine bends insure an even flow of gases through the heat transfer area of the boiler as well as equal water flow. An upper plenum plate diverts the flue gases to the burner end to facilitate flue gas recirculation. The boiler can be to full steaming capacity in 10 minutes. Access for maintenance is required on one side only.
FTS 4, 5, & 6 (50 to 500 BHP)

The Precision FTS Series “Flex-Tube” boilers are encased in a stress-free sealed insulated casting. Pre-selected insulation is used to ensure low casting temperatures. Access to the furnace is through a manway either at the front (small units) or at the rear (large units) The furnace is fully water- cooled on all four sides and heat absorption does not exceed 60,000 BTU per cubic foot of furnace volume. The tube bends which are necessary to provide multiple gas passes provide flexibility against expansion and contraction of the boiler which is associated with sudden temperature and pressure changes in the vessel. The pressure vessel is warranted against thermal shock for 25 years. The boiler outer jacket is sheet steel finished with hard enamel paint.

All boilers, burner and controls are completely assembled and tested at our plant. The package is designed, built, inspected and tested in accordance with ASME Code and is registered with the National Board. A certified test report is available.

FTH Flextube, Gas/Oil, Hot Water Boilers

FTH 1, 2, & 3 (25 to 200 BHP)

Precision Boilers FTH Series boilers are “Flex-Tube” forced draft noted for their small footprint and high fuel- to-output efficiency exceeding 82% to 85% for gas and 86% for oil. The FT series boilers utilize 1½” OD tubes (0.105″ nom wall thickness) in a serpentine tube configuration designed to absorb thermal shock. The pressure vessel is warranted against thermal shock damage for a period of 25 years. The design accommodates up to 150F temperature differences from the supply and return and offers virtually instantaneous hot water.

The FTH Series are compact compared to other types of boilers; yet maintain approximately 5 square feet of heating surface per boiler horsepower. Access for maintenance is required on one side only and are available as right or left hand tube configuration, which for multiple boiler installations requires less floor space as the boilers can be set to utilize common access space.
FTH 4, 5, 6 (50 BHP to 500 BHP)

The Precision FTH Series “Flex-Tube” boiler is a two drum system with multiple longitudinal pass separated by tangent water walls resulting in long turbulent gas travel without gas stratification. The furnace is fully water-cooled on all four sides and heat absorption does not exceed 60,000 BTU per cubic foot of furnace volume. Large downcomers are located outside the heat transfer zones to ensure positive natural circulation without relying on external circulation pumps. The boiler drums are independently supported by a structural steel frame to ensure that undue stress is not placed on the heat exchanger assembly.
FPS Vertical Fire Tube Steam Boiler
Traditional Design, Untraditional Advantages

The Precision Model “FPS” Vertical Fire Tube Steam Boiler features the traditional Fire Tube design in the vertical configuration with an under-fired power burner. In addition to the simplicity of the 4-piece design, the Model “FPS” includes many advantages over other vertical configured boilers such as larger water volume and steam chest which reduce cycling and improve overall efficiency, easier sludge cleanout, standard “off-the-shelf” burners, and the proven Fire Tube reliability. An integral feedwater preheater eliminates “cold water shock” problems characteristic of some fixed tubesheet designs.
Key Advantages

• Traditional, proven Fire Tube design
• Larger water volume
• Lower pressure drop through the unit
• Reduced cycling
• 84% efficiency
• Easier sludge cleanout
• Turbulators for maximum heat transfer
• High efficiency UL Listed Power Flame gas, light oil, or combination burners / Low Nox available with or without FGR
• Heavy duty / 16 gauge cabinet and flanged steel base provide greater structural strength
• UL listing of complete assembly

FPH Vertical Fire Tube Hot Water Boiler

Traditional Design, Untraditional Advantages

The Precision Model “FPH” Vertical Fire Tube Hot Water Boiler features the traditional Fire Tube design in the vertical configuration with an under-fired power burner. In addition to the simplicity of the 4-piece design, the Model “FPH” includes many advantages over other vertical configured boilers such as a larger water volume which results in both a low pressure drop thru the unit and reduced cycling, thus improving overall efficiency. The Model “FPH” also features standard “off-the-shelf” burners and the proven Fire Tube reliability.
Key Advantages

• Traditional, proven Fire Tube design
• Larger water volume
• Lower pressure drop through the unit
• Reduced cycling
• 84% Efficiency
• Turbulators for maximum heat transfer
• High efficiency UL Listed Power Flame gas, light oil, or combination burners / Low Nox available with or without FGR
• Heavy duty / 16 gauge cabinet and flanged steel base provide greater structural strength
• UL listing of complete assemblies

FPW Vertical Fire Tube Water Heater

Fire Tube Reliability in a Water Heater Design

The Precision Model FPW Vertical Fire Tube Water Heater features the traditional Fire Tube design in the vertical configuration with an under-fired power burner. In addition to the simplicity of the 4-piece design, the Model “FPS” includes many advantages over other vertical configured boilers such as larger water volume and steam chest which reduce cycling and improve overall efficiency, easier sludge cleanout, standard “off-the-shelf” burners, and the proven Fire Tube reliability.
Key Advantages

• Traditional, proven Fire Tube design
• Larger water volume
• Lower pressure drop through the unit
• Reduced cycling
• 84% efficiency
• Easier sludge cleanout
• Turbulators for maximum heat transfer
• High efficiency UL Listed Power Flame gas, light oil, or combination burners / Low Nox available with or without FGR
• Heavy duty / 16 gauge cabinet and flanged steel base provide greater structural strength
• UL listing of complete assembly
• Two Protective lining options (Precision Seal & cement, NSF-61 compliant)