Xylem MOH1 Single or dual zone mixing module (obsolete) - Manual (Page 4)

4
Installation and operation manual MOH1
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Application
• The MOH1 is designed to supply floor heating areas up to approx.
400 Sq. Ft. (from pipe 16x mm onwards) in one- or two-pipe-systems.
The connection of up to 2 floor heating circuits is possible.
• Three versions are available:
MOH1 KF: Mixing set with room temperature guided control, made
of thermostat (50-79°F + frost protection)
with remote sensor (16 Ft.).
MOH1 RT: Mixing set for temperature guided control, made of
thermoelectric drive for the connection of a room
thermostat (room thermostat not included in delivery-
see accessories in product range).
MOH1 KR: Mixing set with integrated constant temperature control
(68-158°F) for the connection of a room thermostat
(room thermostat not included in delivery-
see accessories in product range).
• The MOH1 is provided with a temperature protection system that
restricts the supply temperature in the floor heating circuit to max.
131°F.
Mounting instructions
• MOH1 will be connected directly to the existing radiator-/boiler circuit.
• When two circuits are connected to the MOH1, the shortest circuit
must be balanced by using an adjustable return screw connection.
• The MOH1 must be mounted in a horizontal position (see page ).
Left or right connection to the radiator-/boiler circuit is possible
(see page 9).
• The MOH1 has to be installed on a higher level than the floor heating
installation.
• Ensure that the pre-pressure to the MOH1 from the radiator-/vessel
circuit is minimum 1.45 PSI
• Before running the MOH1 please check, that the floor heating system
is filled, completely vented, and proved against leakage.