Direct-Fired Indoor/Outdoor Make-up Air

Direct-Fired Indoor/Outdoor Make-up Air

Modine’s direct gas-fired make-up air units provide an energy-efficient and cost-effective solution for delivering tempered 100% outside air to commercial or industrial spaces. Designed for indoor or outdoor installation, models MCV (single-speed) and MVV (variable-speed) are ideal for maintaining proper building pressure, air quality, and temperature control.

With heating inputs up to 2,100,000 BTU/hr, 100% thermal efficiency, and the advanced Auto-Velocity™ profile system for optimal combustion, these units ensure maximum fuel savings and performance. A wide range of blower sizes and airflow options (800–14,000 CFM) supports a variety of airflow configurations, including straight, bottom, or top discharge.

Perfect for warehouses, factories, and other facilities requiring fresh air ventilation, Modine’s direct-fired make-up air systems offer the customization, control, and efficiency needed for reliable year-round operation.

Available Models:

MCV (single-speed blower applications)
MVV (variable-frequency drive for variable-speed blower applications)

Standard Features:

  •  Heating input ratings up to 2,100,000 Btu/hr with high firing rate turndown (30:1 at full burner rating) for optimum temperature control
  • 100% thermal efficiency (92% sensible gain) reduces fuel bills
  • Multiple blower sizes provide a wide range of airflow capability from 800 to 14,000 CFM
  • Indoor or outdoor installation
  • Airflow configurations include straight, bottom, or top discharge with either right or left-hand control access
  • Auto-Velocity profile system on every unit constantly monitors burner profile pressure drop and automatically adjusts burner air velocity for optimum combustion
  • Direct Spark Ignition (DSI) to simplify operation and minimize cost on Units rated 1125MBH and smaller
  • Foil-faced insulation on the cabinet for ease of cleaning
  • Neoprene blower/motor vibration isolation for quiet operation
  • Prewired 10-foot power and control wire harnesses in flexible conduit for speed and ease of field wiring.  Wires are labeled for easy identification on each job-specific wiring diagram
  • Floor-mounted wiring chase to eliminate the need to drill holes in the floor for routing electrical wiring harnesses to the space
  • A wide range of controls, options, and accessories for unit customization to meet even demanding specifications

Optional Factory-Installed Features:

  • Galvanized steel double-wall liners are available
  • Side access filter options to ensure delivery of clean air
  • LonWorks or BAC new MS/TP compatible controls for maximum centralized unit control
  • Hinged access doors for easy service access
  • Inlet and/or manifold (burner) gas pressure gauges to view gas pressures without needing to connect a manometer

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