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Climate

  • Humid (like in southern & eastern US)

Equipment needed

  • HAVEN Monitor
  • HAVEN Controller x2
  • Ventilating dehumidifier with 24VAC input (like the Santa Fe Ultra Aire 98H or 120H, or AprilAire e100V)
  • Motorized damper with 24VAC input, in an outdoor air duct
  • Air handler with 24VAC input

What does it do

Ventilation

  • Monitors indoor tVOC levels to know when you need a burst of fresh air
  • Opens damper & optionally activates ventilating dehumidifier's compressor to dehumidify the humid outdoor air we're bringing in
  • Closes the damper if outdoor AQI (standardized rating based on a combination of particles and chemicals) reaches a certain unhealthy limit

Dehumidification

  • Monitors indoor relative humidity and temperature to calculate dew point to see if it needs moisture removal
  • Toggles on the ventilating dehumidifier's compressor to dehumidify the indoor air

Filtration

  • The HAVEN Monitor in this scenario is installed in the indoor return duct of the air handler. HAVEN configures a circulation schedule in order to toggle the air handler fan on/off regularly throughout the day to take regular samples and filter the air. 
  • Monitors PM2.5 levels to determine when further filtration is needed
  • Keeps the air handler running and activates the ventilating dehumidifier's fan (separate from the compressor which dehumidifies the air)

How does it all fit together?

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Wiring diagram

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Ready to put the V back in HVAC?

Once you're on-site ready to install, just load up the HAVEN IAQ app and away you go!

 

*1 — What's dew point?
It's a calculation that uses indoor relative humidity and temperature to determine when dew will form on surfaces. This can lead to moisture problems! Dew point is a precise parameter to use for humidity control, because the amount of water the air can hold depends on its temperature! Without taking temperature into consideration, we're controlling based on a relative parameter. 

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