Xylem MOH1 Single or dual zone mixing module (obsolete) - Manual (Page 5)

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Installation and operation manual MOH1
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• Since the circulation pump might create under certain circumstances
some flow noise, the MOH1 should be placed away from noise
sensitive areas (i.e. bedooms).
• The water temperature in the supply radiator-/boiler circuit should be
at least 18°F (=10 K) higher than in the floor heating supply.
• The maximum length of each pipe must not be longer than 38 Ft. for
floor heating design with spread of 18°F (=10 K) when using pipes
0.47’’ i.d. (i.e. pipe 16xmm). Smaller diameter pipe results in a
shorter pipe length.
• MOH1 KF: Assemble the thermostatic head and mount the
sensor in an appropriate position in the room and
about 5.6 Ft above the floor. Use a vacant pipe if
possible.
• MOH1 RT: Wiring of the electrical actuator and the room
thermostat
MOH1 KR: only by a qualified electrician.
Bypass valve closed.
Allen key 0.1’’
Hydraulic connection
• Hydraulic connection of one-pipe-system is no longer state-of-the-art.
Connection scheme on request.
• This scheme shows the hydraulic connection of two-pipe-system: