Data Sheet for Product

7/12
Siem ens Modulating control valves with magnetic actuator‚ PN 16 CA1N4465en
Building Technologies 2018-02-05
The 4-wire connection should always be given preference!
S
NA
P
MED
S
TR
P
TR
I
F
wire cross-section [mm
2
]
1.5 2.5 4.0
Type reference [VA] [W] [VA] [W] [A] max. cable length L [m]
MXG461S15-1.5
29 5 ″50 ″30 3.15 70 110 170
MXG461S20-5.0
MXG461S25-8.0
MXG461S32-12
S
NA
= Nominal apparent power
P
med
= Typical power consumption in the application (Valve characteristic: equal percentage)
S
TR
= Minimum apparent transformer power
P
TR
= Minimum DC supply power
I
F
= Minimal required slow fuse
L = Max. cable length; with 4-wire connections, the max. permissible length of the separate 1.5 mm
2
copper positioning signal wire is 200 m
1)
All information at AC 24 V or DC 24 V
Engineering notes
Conduct the electric connections in accordance with local regulations on electric
installations as well as the internal or connection diagrams.
Safety regulations and restrictions designed to ensure the safety of people and
property must be observed at all times!
In open circuits, there is a risk of valve disc seizing caused by scale deposits. Additionally,
periodic actuation (twice or three times per week) must be planned.
With closed and open circuits always use a strainer upstream of the valve to increase the
valve's functional safety.
Do not touch hot surfaces.
Avoiding flow noise
To reduce flow noise, abrupt reductions in pipe diameters, tight pipe bends, sharp edges
or reductions in the vicinity of valves should be avoided. A settling path should be
provided.
Recommendation:
∂ L ≥ 10 x DN, at least 0.4 m
Also, the flow must be free from cavitation
Mounting notes
Mounting and operating instructions are printed on the actuator and on the electronics
module.
The valve may only be used as a mixing or through-port valve, not as a diverting
valve. Observe the direction A ↑ AB of flow!
90°
4455Z11
90°
IP54IP54
Degree of protection valid only with M20 cable gland supplied
by the installer.
It is essential to maintain the specified minimum clearance above and to the side of the
actuator and/or electronics module! (refer to «Dimensions», page 12).
Connection type
1)
4-wire connection
Caution
Orientation
Access for installation