Dedicated Outdoor Air System

Make-up Air

ZVS-VXRTU  

Options

  • Up to 4″ additional filtration – MERV-8, 13, 15, and HEPA
  • Up to 7-row coil
  • Fully modulating hot gas reheat coil; allows for precise humidity and capacity control
  • 90% high efficiency modular heating
  • Propane, heat pump, or electric heat modular heating
  • VFD or ECM supply fans
  • Fully integrated, BAS, or DDC controls

Description

A Dedicated Outdoor Air System (DOAS) is a specialized HVAC system designed primarily to handle fresh outdoor air, separate from the building’s primary heating or cooling system. Unlike traditional HVAC systems that mix outdoor air with return air from the building, a DOAS exclusively treats outdoor air. This approach ensures that the indoor environment receives a consistent and controlled supply of fresh air, improving indoor air quality. By decoupling the ventilation from the temperature control, a DOAS can operate more efficiently, as it can be optimized for its specific task. This separation also allows for more precise control over humidity levels, further enhancing comfort and reducing the potential for mold growth or other moisture-related issues.

Features & Benefits

  • Danfoss variable speed inverter scroll compressor with VFD
  • Mixed air temperature/humidity sensor measures outdoor, return, mixed, discharge and space air
  • 2″ metal mesh outdoor air filters
  • Low leakage outdoor air damper, includes integrated louver and bird screen assembly
  • Electronic expansion valve modulates 0-100% providing automated superheat control and monitoring and preventing liquid migration
  • Stainless steel sloped condensate drain pan, includes float switch and exceeds ASHRAE 62.1 standards
  • Natural gas indirect fired furnace with constant 80% efficiency through modulation
  • Variable speed direct drive supply fan
  • Variable speed outdoor fans with EC motors, 10:1 turndown