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PT/PTN Series

Power-Throw™ High-Velocity Horizontal Hydronic Unit Heater

The Modine Power-Throw™ high-velocity horizontal hydronic heaters are designed to perform exceptionally well in challenging environments, providing unmatched heat throw and efficiency. With their innovative horizontal-discharge design and high-capacity coils, these heaters deliver reliable, consistent warmth in large or deep spaces where standard horizontal-discharge models fall short. A single Power-Throw™ unit can often replace up to three smaller horizontal delivery units, reducing equipment, installation, and maintenance costs.

Models

  • PT – Copper Tubes (standard temperature/pressure applications)
    • 6 Model Sizes: 279, 333, 385, 500, 610, and 952 MBH
  • PTN – Copper/Nickel Tubes (high temperature/pressure applications)
    • 6 Model Sizes: 279, 333, 385, 500, and 610 MBH
Where To Buy

Highlighted Features

Clean, Efficient, and Reliable Heating

Using hot water or steam from an existing hydronic system, the Power-Throw™ provides strong, combustion-free heat output with minimal noise—perfect for environments where clean, consistent comfort is essential.

High Velocity Horizontal Air Throw

The Power-Throw™ delivers powerful, extended air throw to push warm air across large areas—ideal for warehouses, high-bay facilities, loading docks, and mechanical rooms requiring targeted, far-reaching heat distribution.

Rugged, Industrial-Grade Construction

With a heavy-gauge steel cabinet, corrosion-resistant components, and service-friendly access, the Power-Throw™ is engineered for long-term reliability and fast installation in tough commercial and industrial settings.

Product Details & Specifications

Key Features
  • High-Velocity Air Delivery: Powerful heat distribution across a wide area, effectively replacing multiple smaller units.
  • Capacity Range: Available in 6 model sizes from 279,000 to 952,000 Btu/hr, based on 2 lb. steam, 60°F entering air
  • Durable Tube Material Options: Select copper tubes for standard hot-water and low-pressure steam applications, or copper-nickel tubes for high-temperature (up to 400°F) and/or high-pressure (up to 250 psi) applications.
  • Low Outlet Temperature Models: Ideal for applications involving higher steam pressures or challenging environments.
  • Customizable Air Deflectors: Standard adjustable horizontal louvers provide precise control over air distribution.
  • Adjustable Air Stream: Easily concentrate the air stream into a powerful jet or widen it to enhance coverage over a larger area.
  • Quiet and Efficient Fan Blades: Engineered for optimal balance and pitch, our fan blades move significant volumes of high-velocity air while maintaining low noise levels.
  • Integral Junction Box: Simplifies wiring for easy installation.
  • Easy-to-Clean Exposed Coil: Designed for effortless maintenance and cleaning access.
  • Motor Cooling Cone: Protects the motor from coil heat during operation, promoting longevity for insulation, windings, and lubricant.
  • Robust Construction: Built to withstand industrial environments, ensuring a prolonged service life.
  • Corrosion-Resistant Finish: Features a durable, baked-on polyester paint finish that provides corrosion resistance and blends well with various environments.
  • Proudly Designed, Engineered, and Assembled in the USA: Commitment to quality and craftsmanship in every unit.
Options

Available Models:

  • Copper tubes (PT)
  • Copper/nickel tubes for high-temperature (400°F water) and/or high-pressure (250psi steam) applications (PTN)

Model Sizes:

  • PT – 6 Model Sizes: 279, 333, 385, 500, 610, and 952 MBH
  • PTN – 5 Model Sizes: 279, 333, 385, 500, and 610 MBH

*Btu based on 2 lb. steam, 60°F entering air

Supply Voltage:

  • 115V/1PH/60Hz
  • 230V/1Ph/60Hz
  • 208V/3Ph/60Hz
  • 230V/3Ph/60Hz
  • 460V/3Ph/60Hz
  • 575V/3Ph/60Hz
  • 575V/3Ph/60Hz

Motor Type:

  • Enclosed Air Over
  • Enclosed Air Over with Thermal Overload
  • Explosion Proof with Thermal Overload
  • Enclosed Air Over with Thermal Overload & Transformer
Accessories

Field Installed

  • Vertical Deflector Blades
  • Standard Thermostat
  • Explosion-proof Thermostat
  • Thermostat Guard
  • Aquastat
  • Discharge Hoods
  • Manual Starter
  • Step-Down Transformer
Warranty
Applications

The Power-Throw™ Horizontal Hydronic Unit Heater is specifically designed for large commercial and industrial facilities that need greater heat distribution than what standard horizontal delivery models can offer. It is particularly effective in challenging spaces that are often exposed to cold air from outside the building.

Common applications include:

  • Loading docks and Shipping/Receiving areas
  • Warehouses and distribution centers
  • Manufacturing and fabrication plants
  • Large vehicle service bays and equipment garages
  • Cold-storage facilities or large open machinery areas

Tech Documents

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