Industrial-grade heating power for the toughest environments.

The MASTER Airbus BV471 and BV691 are top-tier indirect diesel heaters, engineered for large-scale, high-demand applications. Perfect for construction, aviation, military, and event industries, these models offer maximum efficiency, clean heat, and advanced air distribution capabilities.

• BV471S4: 136kW output, ideal for medium to large applications
• BV691TR4: Massive 225kW heating power ideal for large applications including vertical ducting up multiple stories with it centrifugal high pressure fan
• 100% clean, dry air safe for enclosed and occupied environments
• Rugged, weather-resistant chassis designed for intensive industrial use
• Full range of safety features including electronic flame control, overheat shutdown, and thermostat connectivity

Features

• Digital control of the combustion
• Strong and robust steel frame with metric bolts
• Powerful fan
• Air pressure 250 Pa (400 Pa for centrifugal version)
• Unique ‘cold start’ button for very cold environments
• Possible connection to 4, 2 or 1 flexible tubes
• Flue gas exhaust
• Separate Riello oil burner
• Summer/Winter switch for ventilation only
• Electronic flame control with photocell
• Fan-Limit thermostat with automatic reset
• Limit thermostat with manual reset
• Fuel preheater
• Two oil filters: oil pump filter and suction filter
• Quick connector to external tank (optional)
• High-efficiency heat exchanger made of stainless steel pipes
• Stainless steel combustion chamber
• Robust wheels included
• 4 robust crane hooks