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MCV/MVV Series

Indoor/Outdoor Direct-Fired Make-Up Air System

Modine’s Direct Gas-Fired Make-Up Air System delivers a powerful, efficient solution for air handling in environments that demand 100% outside air. By utilizing advanced direct-fired technology, these units heat make-up air with a gas flame, ensuring outstanding performance and minimal maintenance. With an impressive 100% thermal efficiency and a remarkable 92% sensible efficiency, they are specifically designed to optimize energy use and minimize operational costs. Offering input ratings of up to 2,100,000 Btu/hr and airflow capabilities ranging from 800 CFM to 14,000 CFM, these units provide exceptional versatility for a wide range of applications.

Models

  • Model MCV: Direct-Fired Make-Up Air Unit with a Constant-Speed Blower
  • Model MVV: Direct-Fired Make-Up Air Unit with a Variable-Speed Blower
Where To Buy

Highlighted Features

High-Efficiency Direct-Fired Performance

With direct-fired heating technology, these systems achieve up to 100% combustion efficiency—providing immediate, energy-efficient heat while meeting ventilation and make-up air needs in large, demanding facilities.

100% Outside Air for Superior Ventilation

The MCV/MVV Series delivers continuous, 100% outside air to replace exhausted or displaced air—improving indoor air quality, maintaining proper building pressure, and ensuring a healthier, more productive environment.

Durable, Industrial-Grade Construction

Designed with heavy-duty components, corrosion-resistant materials, and service-friendly access, the MCV/MVV Series withstands the rigors of industrial and commercial applications—delivering long-term performance with minimal maintenance.

Product Details & Specifications

Key Features
  • Efficient Heating: Achieves maximum temperature rises of 130°F for natural gas and 95°F for propane, with a supply air temperature limit of 120°F.
  • High Heating Capacity: Delivers heating input ratings up to 2,100,000 Btu/hr, featuring a 30:1 high firing rate turndown for precise temperature control.
  • Versatile Airflow Options: Offers a range of blower sizes to accommodate airflow from 800 to 14,000 CFM.
  • Superior Performance: 100% thermal efficiency (92% sensible) ensures optimal energy use.
  • Durable Construction: Features corrosion-resistant G90 galvanized steel casing panels on a robust aluminum-tube cabinet frame.
  • Flexible Installation: Indoor or outdoor installation. Horizontal cabinet design with down, straight, or top discharge options; includes a rigid channel base for curb, slab, or suspension mounting.
  • Easy Maintenance Access: Equipped with lift-out gasketed access panels with handles.
  • Effective Insulation: Contains 1″ foil-faced fiberglass insulation to enhance thermal efficiency.
  • Advanced Control Systems: Incorporates the Maxitrol Series 14 discharge temperature control, with options for factory-mounted discharge air sensors and a remote control panel featuring lights, switches, and temperature controls.
  • Reliable Ignition and Safety: Low-maintenance cast aluminum burner with stainless-steel mixing plates, featuring direct spark ignition (up to 1125 MBH) and interrupted pilot ignition for larger models. Includes flame safeguard control and high limit safety features.
  • Auto-Velocity™ Profile System: Automatically adjusts burner air velocity for optimal combustion.
  • Robust Electrical Components: Features include control step-down transformers, motor starters with overload protection, and adjustable sheave-drive motors.
  • Long-lasting Performance: Fan bearings rated for L10 life (minimum 100,000 hours) with neoprene vibration isolation for fan and motor.
  • Simplified Wiring Installation: Comes with flexible installation wiring harnesses (10 feet standard for power and remote panel wiring) and a floor-mounted chase to eliminate drilling.
  • Tested and Certified: 100% factory tested in all operational modes; ETL certified for use in the US and Canada for 100% outside air make-up applications.
  • Tested and Certified: ETL certification for the entire system
  • Proudly Designed, Engineered, and Assembled in the USA: Commitment to quality and craftsmanship in every unit.
Options

Factory-Configured & Installed Options

  • Model Configurations:
    • Model MCV: Direct-Fired Make-Up Air Unit with a Constant-Speed Blower
    • Model MVV: Direct-Fired Make-Up Air Unit with a Variable-Speed Blower (down to 35% of rated capacity)
  • Blower Speed & Control Configuration:
    • Constant-Speed Blower Package (Model MCV Only)
    • Variable Frequency Drive (VFD) Package allowing variable fan-speed regulation down to 35% of rated capacity (Model MVV Only)
  • Burner Input Capacities: 290, 375, 625, 750, 938, 1125, 1200, 1500, 1875, and 2100 MBH
  • Airflow Capacities (Casing Sizes 1–5):
    • Supported blower sizes configured for constant airflow (MCV) spanning from 800 to 14,000 CFM
    • Variable-speed airflow (MVV) spanning from 800 to 14,000 CFM
  • Fuel Configuration: Manufactured natural gas or propane gas manifolds
  • Ignition System:
    • Direct Spark Ignition (DSI) (standard on units rated 1,125 MBH and smaller)
    • Interrupted Pilot Ignition (IPI) (for units larger than 1,125 MBH)
  • Blower Bearings & Vibration Isolation:
    • Spider Bearings with Neoprene Vibration Isolation
    • Spider Bearings with robust 1″ Deflection Spring Isolation (Casing sizes 2–4)
    • Heavy-Duty Pillow Block Bearings with Neoprene Vibration Isolation
    • Heavy-Duty Pillow Block Bearings with 1″ Deflection Spring Isolation
  • Cabinet Finish: Unpainted (Standard), Painted Exterior, or Painted Interior and Exterior (requires Double Wall Liner option)
  • Double-Wall Casing Liner: Galvanized steel interior double-wall liner options for added rigidity and ease of interior washdown/cleaning
  • Access Doors: Hinged access doors with lift-out gasketed panels and service handles for quick filter and mechanical access
  • Manifold Pressure Gauges: Factory-mounted inlet and/or burner gas pressure gauges to verify supply pressures without requiring a portable manometer
  • Supply Voltage Configuration: 115V/1Ph, 208V/1Ph, 230V/1Ph, 208V/3Ph, 230V/3Ph, 460V/3Ph, or 575V/3Ph
  • Cabinet Insulation: 1″ foil-faced fiberglass interior cabinet insulation
  • Safety Controls & Switches:
    • High gas pressure manual-reset safety switch
    • Low gas pressure manual-reset safety switch
    • High limit safety switch
    • Flame safeguard monitoring control
  • BMS Integration Cards: LonWorks or BACnet MS/TP compatible communication cards for centralized building automation system controls

See catalog 7-115 DIRECT GAS-FIRED MAKE-UP AIR UNITS MODEL SERIES MCV/MVV for full details.

Accessories

Field-Installed Accessories

  • Discharge Dampers: Motorized outlet discharge dampers (available in standard or low-leak options, in both power-open/spring-close or power-open/power-close configurations)
  • Inlet Air Hood: Weatherproof outdoor air intake hood with integrated bird screen
  • Air Filtration (Side-Access): Side-access filter racks populated with 1″ or 2″ cleanable aluminum mesh filters
  • Air Temperature Controls: Remote temperature control stations with integrated Maxitrol Series 14 discharge temperature controllers and duct-mounted air temperature sensors
Warranty
Applications

Modine’s Direct Gas-Fired Make-Up Air Systems provide the customization, control, and efficiency required for dependable year-round operation in commercial and industrial environments. Common applications include:

  • Warehouses and distribution centers
  • Industrial manufacturing and processing plants
  • Commercial kitchens and high-exhaust environments
  • Automotive facilities and service centers
  • Food and beverage production areas
  • Large retail stores and big-box buildings
  • Gymnasiums and sports complexes

Tech Documents

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