User Manual

Siemens
A6V11841938_en--_a
Smart Infrastructure
2019-11-25
Notes
Mounting
Orientation
● The specified direction of flow must be observed in all cases (refer to Engineering [➙ 5]).
● The mounting instructions are enclosed with the packaging.
● The valve and actuator are easily assembled directly on site. There is no need for special
tools or calibration.
AL50 supporting ring
For VVI46.25/3, the AL50 supporting ring must be put into position before mounting the
actuator SUE21 onto the valve.
VVI46.15/3 and VVI46.20/3 do not require an AL50, as the actuators can be installed on
valve directly.
For VVI46.25/3 only
Commissioning
Manual adjustment
In the straight-through control path A￫AB, the valve is opened by a return spring.
The straight-through path can be closed manually with the manual adjustment button.
Engineering
Refer to Mounting [➙ 5] and Commissioning [➙ 5] notes.
Recommendation
A strainer should be fitted upstream of the valve. This increases reliability.
Valve
construction
Valve series
Valve flow in control mode
Valve stem
Inlet A
Outlet AB
Retracted
Extended
2-port valves
VVI46../3
Variable
Variable
A￫AB
Closes
A￫AB
Opens