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  1. #14
    Join Date
    Mar 2007
    Design VAV always with fully fresh air. Do not use recirculation. Today there are a lot of good way,s for heatrecovery with wheel or cross heater exchanger. Here in the Netherlands it is not allowed to use recirculation on a AHU. The requierd minimal ventilation rate is 1,5 ACH most VAV system are here induction VAV so we can control from 20% to 100% primairy air.

    In case that you have a exsiting system with recirculation we place a Co@ sensor which will control the minimum setting.

  2. #15
    Join Date
    May 2007
    Alright......HVAC Teacher Yeah I know you!!!! How ya been??? How come I wasn't invited to the christmas in July party???

    Orion, Not so sure I know you.....What is your name?? What TTC are you with??

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