Navien NR 210A recirculation line.

Discussion in 'Tankless Water Heater Forum' started by Jymer, Jan 25, 2014.

  1. Jymer

    Jymer New Member

    Messages:
    3
    Location:
    Ontario Canada
    I have added my recirculation line on my NR 210A Navien and it's working great. Just wanted to know if I need an expansion tank on that line? It acts like a closed loop when not in use so I think I do. Normally they install them on the cold side of a normal tank but with tankless there is less water to expand. Please advise.
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