DX Outdoor Air Unit

We designed the Packaged Outdoor Air unit based on customer requirements from across the country. Thorough analysis of the performance requirements resulted in a robust design with the ability to effectively operate over an expansive performance envelope required for the year-round treatment of outdoor air.

Also, we took into account today’s HVAC market issues, such as indoor air quality (IAQ). We equipped the Packaged Outdoor Air unit to meet your ventilation needs—in direct response to the ventilation and humidity control requirements of ASHRAE standard 62.1.

Packaged Outdoor Air unit key areas

• indoor air quality (IAQ)
• high quality and durability
• advanced, integrated controls
• flexibility
• enhanced serviceability

Standard Unit Features

• Three cabinet sizes with airflow range up to 13,500 cfm
• Double-wall construction with heavy gauge galvanized metal skin
• Outdoor air inlet hood
• Prepainted exterior finish
• Air-cooled DX refrigeration system
• Completely factory-piped and leak-tested refrigeration system
• Non-corrosive drain pans sloped in two planes
• Direct drive BI airfoil plenum fan
• Factory-installed variable frequency drive (VFD)
• Optional belt drive BI airfoil plenum fan
• Scroll compressors
• Optional digital scroll compressors
• Optional variable speed compressors
• Single-point power connections for units with optional ERV, powered exhaust, and some electric heat
• Filter rack adjustable for 2-, 4-, or 6-inch filters
• Factory-assembled inlet hood with 2” mist eliminators
• Outdoor air or space control
• Non-fused disconnect switch
• Type 409 stainless steel heat exchanger
• Low leak parallel blade outdoor air damper with edge seals
• High-efficiency fan motors

Standard Control Features

• Fully integrated, factory-installed and commissioned microelectronic controls
• Unit mounted human interface panel
• Supply airflow proving
• Emergency stop
• HI control for sensors and setpoints
• Mechanical refrigeration capacity control (RCC)
• Occupied/unoccupied control modes
• Automated test modes
• High turn-down (up to 16:1) modulating indirect gas-fired heat