Xylem MOH1 Single or dual zone mixing module (obsolete) - Manual (Page 9)

9
Installation and operation manual MOH1
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Possible filling option, albeit a little complicated. One fill valve on the
primary return side allows for filling and air purging. The integrated ball
valve must be closed (horizontal). Caution: The floor heating flow at the
BM mini must be closed during the fill operation. Filling a wall heating
loop is impossible in this way.
Picture 5