Data Sheet for Product

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Siemens 2-port and 3-port zone valves, PN16 A6V10421629_en--_e
Smart Infrastructure 2021-11-29
Commissioning notes
In the straight-through control path A → AB, respectively AB → A the valve is
opened by a return spring.
The straight-through path can be closed manually with the manual adjustment
button.
With 3-port valves, this method can be used to open bypass B to 70 %. (exception:
VXI46.25T/2)
Maintenance notes
V..I46../2 valves require no maintenance.
When doing service work on the valve/actuator:
• Deactivate the pump and turn off the power supply
• Close the shutoff valves
• Fully reduce the pressure in the piping system and allow pipes to completely
cool down
If necessary, disconnect the electrical wires.
Before putting the valve into operation again, make sure the manual knob or the
actuator is correctly fitted.
The stem sealing gland cannot be exchanged. In the case of leakage, the entire
valve must be replaced. Contact your local office or branch.
Disposal
• Before disposal, the valve must be dismantled and separated into its various
constituent materials.
• Legislation may demand special handling of certain components, or it may be
sensible from an ecological point of view.
• Please observe current local legislation.
Warranty
The technical data given for these applications is valid only in conjunction with the
Siemens actuators as detailed under Equipment combinations on page 2.
Use with third-party actuators invalidates any warranty offered by Siemens
Building Technologies HVAC Products.
Manual adjustment
Caution
Stem sealing gland