User Manual

∆p
v
100
= Differential pressure across the fully open valve and the valve's control path A → AB (2-port
valves), AB → A (3-port diverting valves) by a volume flow
100
100
= Volume flow through the fully open valve (H
100
)
∆p
max = Maximum permissible differential pressure across the valve's control path, valid for the
entire actuating range of the motorized valve
100 kPa = 1 bar ≈ 10 mWC
1 m
3
/h = 0.278 l/s water at 20 °C
Engineering notes
Refer to Mounting notes and Commissioning notes.
It is NOT allowed to put a shut off at the bypass port B.
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
01742
A
AB
VVI46../2
A
AB
variable variable
A
AB
closes
A
AB
opens
The direction of flow MUST be as indicated by the arrow, from A → AB.
Valve construction Valve series Valve flow in control mode Valve stem
Port AB Port A Port B Retracted Extended
3-port diverting valves
01743
AB A
B
VXI46../2
AB
A
B
Inlet:
constant
Outlet:
variable
Outlet:
variable
AB A
closes
B
AB
opens
AB A
opens
B
AB
closes
The direction of flow MUST be as indicated by the arrow, from AB → A
and AB
→ B (diverting valves).
Mounting notes
The specified direction of flow must be observed in all cases (refer to Engineering
notes).
The mounting instructions 74 123 0114 0 B are enclosed with the packaging.
The valve and actuator are easily assembled directly on site. There is no need for
special tools or calibration.
Recommendation
Warning
Warning
Orientation
4 / 8
Siemens 2-port and 3-port zone valves, PN16 A6V10421629_en--_e
Building Technologies 2018-04-17