Rupp Air Modular Direct Gas Fired Make Up Air Unit, Heated, 2000 CFM with 15” Mixed Flow Direct Drive Fan - Natural Gas

Direct Gas-Fired Make-Up Air Unit with 15" Direct Drive Fan

The Rupp Air R1D.500-15D is a direct gas-fired heated make-up air unit designed to deliver tempered make-up air for installations requiring frequent air changes. This model features a 15" direct drive fan and is designed for indoor or outdoor installation. The unit uses a G90 galvanized enclosure with an elevated gas burner that operates directly in the airstream, allowing the products of combustion to mix with the incoming make-up air.

Built for reliable commercial and industrial operation, the R1D.500-15D features a self-adjusting burner profile with spring-loaded profile plates that automatically respond to incoming airflow. This design supports 2-speed and variable-air-volume applications without requiring motors or actuators to adjust the burner profile. Pre-wired and pre-piped controls, redundant gas valves, intermittent spark ignition with timed safety lockout, and multiple safety controls provide dependable operation.

Rupp Air Features & Benefits

• 15" Direct Drive Fan: Equipped with a 15" direct drive fan for reliable make-up air delivery without a belt-driven blower assembly.
• Direct Gas-Fired Heating: Delivers tempered make-up air by burning gas directly in the airstream, allowing the products of combustion to mix with the incoming make-up air.
• Fuel Type Flexibility: Factory-configured for natural gas operation, with liquid propane options available to accommodate site-specific fuel requirements.
• Self-Adjusting Burner Profile: Spring-loaded profile plates automatically respond to the incoming airflow to maintain proper air velocity and pressure drop across the burner for clean combustion.
• High-Efficiency Burner: The burner is capable of nearly 100% efficiency and features a maximum turndown ratio of 30:1.
• Heavy-Duty Construction: Built with G90 galvanized construction, stainless steel burner components, fully insulated casing, easy-access doors, and lifting points.
• Pre-Wired Controls: Factory pre-wired and pre-piped controls include a 120-volt control transformer and single-point electrical connection.
• Integrated Safety Controls: Includes redundant gas valves, intermittent spark ignition with timed safety lockout, high-temperature limit switch, airflow proving switch, and burner observation port.
• Flexible Installation: Designed for indoor or outdoor installation with horizontal or down discharge configurations.

What's Included

Each Rupp Air R1D.500-15D package includes the direct gas-fired heated make-up air unit with a 15" mixed-flow direct drive fan, a sloped filtered intake with 2" MV EZ Kleen metal mesh filters, 0–150°F discharge temperature control, a gas manifold, down discharge construction, low fire start, motorized backdraft damper, commercial smoke detector interlock, factory-set freezestat, VAV wiring package, variable frequency drive, and an insulated flat curb with a full bottom curb corner.

Safety Features

• Redundant Gas Valves: Provides redundant gas shutoff for added safety.
• Timed Safety Lockout: Intermittent spark ignition with timed safety lockout helps protect against ignition failure.
• High-Temperature Limit: Monitors temperature to help protect the unit from excessive heat.
• Airflow Proving Switch: Verifies airflow for safe heater operation.
• Disconnect Switch: Provides a means to disconnect electrical power for service.
• Burner Observation Port: Provides access for visual burner inspection.

Warranty Information

RuppAir provides a 2-year limited warranty covering defects in materials and workmanship under normal use and service. The warranty period is 24 months from the date of shipment. Defective parts covered by the warranty will be repaired or replaced at no charge after examination by RuppAir.

The warranty does not apply if the equipment is not installed by a qualified installer according to the manufacturer's installation instructions, is not installed in accordance with applicable federal, state, and local codes, is misused or neglected, is operated outside its published capacity, or the invoice is not paid according to the sales agreement. The buyer is responsible for all labor costs associated with warranty repairs or replacements. For complete warranty details, terms, conditions, exclusions, and limitations, please refer to the RuppAir Warranty Policy.