Data Sheet for Product
2
Siemens
A6V11932500_en--_b
Smart Infrastructure
2020-08-12
Use
● For use in ventilating and air-conditioning systems for water-side terminal units in closed
circuits, e.g. induction units, fan-coil units, small reheaters and small re-coolers.
– 2-pipe systems with 1 heat exchanger for heating and cooling
– 4-pipe systems with 2 separate heat exchangers for heating and cooling
● In closed-circuit heating systems, e.g.:
– Separate floors in a building
– Apartments
– Individual rooms
– Floor heating
Functions
The zone valves are closed when de-energized. An On/Off controller (thermostat) is required
to drive the motorized valve actuators. If the medium temperature deviates from the setpoint,
the controller sends a control signal to the actuator to open the valve. When the medium
temperature returns to the setpoint, the control signal is cut off and the valve closes.
2-position SPST control signal
The actuator requires an On/Off controller, typically a room thermostat.
Type summary
Type
Stock number
DN
Connections
PN class
K
vs
A→AB
[m
3
/h]
∆P
max
[kPa]
∆P
s
[kPa]
MVI422.15
S55310-M107
15
Internally
threaded
Rp
16
2.5
350
1)
350
2)
MVI422.20
S55310-M108
20
3.0
350
1)
350
2)
MVI422.25
S55310-M109
25
3.5
350
1)
350
2)
Type
Stock number
DN
Connections
PN class
K
vs
AB↔A
[m
3
/h]
K
vs
AB↔B
[m
3
/h]
∆P
max
[kPa]
∆P
s
[kPa]
MXI422.15
S55310-M110
15
Internally
threaded
Rp
16
2.5
2.5
250
1)
250
2)
MXI422.20
S55310-M111
20
3.0
3.0
200
1)
200
2)
MXI422.25
S55310-M112
25
3.5
3.5
150
1)
150
2)
1)
3-port valve used as a diverting valve (AB→A, AB→B).
2)
3-port valve used as a mixing valve (A→AB, B→AB).
K
vs
Nominal flow rate for cold water (5…30 °C) through the fully open valve (H
100
), at differential pressure
100 kPa (1 bar).
∆P
max
Max. permissible differential pressure across the valve’s control path, valid for the entire actuating
range of the motorized valve (max. recommended operating differential pressure).
∆P
s
Max. permissible differential pressure at which the motorized valve closes securely against pressure
(close off pressure).