Make-Up Fresh Air System (MAF, MAS)

100-14,426 CFM

YORK® MA Series centrifugal fans replace foul or contaminated air that is removed by commercial or industrial exhaust fans.

  • Roof-mount filtered supply
  • Direct drive or belt drive units available
  • Side intake (MAS model)
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Maintaining Essential Safety and Building Code Requirements

The YORK® Make-up Fresh Air Ventilation System balances a building's air, which is essential to safety and building code requirements in applications that require frequent air changes.

Without proper make-up air filtration, negative pressure systems can form within a structure, which may result in costly repairs, inefficiencies and ineffectiveness in air handling systems, as well as the installation of unnecessary equipment. The MA Series assures proper air volume replacement under varying conditions. 
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Benefits

COST-EFFECTIVE

Lek-Trol™ speed controllers allow adjustment in speed to a maximum of 50% reduction, resulting in a cost-effective means of system balancing.

STRUCTURAL INTEGRITY

Galvanized housing provides rigidity and weather protection. Housing cover is pitched to ensure complete rain run-off.

EASY MAINTENANCE (MAS MODEL ONLY)

Clear access to all components is available via a removable, full-size, insulated cover and heavy-duty, quick-release latches.

Features

  • Motors available in a wide range of voltages and enclosures
  • Base/curb cap is free of protruding fasteners that would interfere with installation
  • Large, 1" diameter conduit entry at the base of the unit
  • Galvanized housing provides rigidity and weather protection
  • Adjustable, cast-iron pitch pulleys allow for field balancing based on actual conditions
  • All direct and belt drive models feature a polarized disconnect plug factory wired from the motor to the junction box

Technical Resources

MAF

Fans Brochure

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MAF

Color and Coating Guide

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MAF

Centrifugal Power Ventilator Make Up Air Specification Guide

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MAF

MAF Fresh Air Make-Up Filtered Supply Fans Operation Guide

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MAF

MA Series Make-up Air and Side Intake Filtered Supply Centrifugal Fans Engineering Guide

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MAF

MAS Side Intake Filtered Supply Fans Operation Guide

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