Xylem MOH1 Single or dual zone mixing module (obsolete) - Manual (Page 8)

8
Installation and operation manual MOH1
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Good filling option. Two existing fill valves on the primary side allow
for good filling and air purging. The ball valve position must be closed
(horizontal).
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Possible filling option, albeit a little complicated. One fill valve on the pri-
mary flow side allows for filling and air purging. The integrated ball valve
must be closed (horizontal). Caution: The floor heating return at the BM
mini must be closed during the fill operation. Filling a wall heating loop
is impossible in this way.
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Picture 4