Installation Notes; Electronic Unit - Siemens WSM5 Serie Mode D'emploi Et Instructions De Montage


Fit the meter vertically or horizontally between two slide
valves so that the arrow on the housing and the flow direc-
tion match. Also observe the installation situations and the
following examples of installation.
Note: Only use the rubber EPDM flat seals that are
supplied.

The meter must not be exposed tensions or forces caused
by by pipes or fittings. If this cannot be permanently guar-
anteed, it is necessary to improve the point of installation or
fix the lines in position, by means of suitable connecting
brackets for example.

Fit the temperature sensors in the same circuit as the me-
ter. Observe the admixtures.

Seal the temperature sensor and the fittings to protect
against manipulation.

If you install the meter for cooling metering, follow the ap-
propriate notes.
Recommendation: If you are installing several meters, the
same installation conditions must be consistent for all meters.

Installation Notes

Note: When installing the meter the locally applicable
installation regulations for meters must be observed.
Inlet or outlet sections are not necessary. If you install the
meter in the common return of two circuits, determine a place
of installation with a minimum distance of 10 × DN from the T-
piece. This distance ensures a good thorough mixing of the
different water temperatures. You can install the temperature
sensors in T-pieces, ball valves, directly immersed or in pock-
ets depending on the version. The temperature sensor ends
must reach to at least the middle of the pipe cross section.
Note: Protect the meter against damage through im-
pacts or vibrations at the place of installation.

On activation, open the slide valves slowly.
The meter is made of a robust and very stable material.

Only use open ended spanners to fit the meter. Only insert
the open ended spanner on the holding surfaces provided.

The maximum range of the tightening torque from 15 Nm
for ¾" meter thread or 25 for 1" meter thread must be ad-
hered to during installation. For aligned pipe joints an angle
of rotation of the cupling nut from 120 ... 180° (¾") or
90 ... 120° (1") from contact of the seal with cupling nut is
sufficient.
Recommendation: Do not install the meter on the pressure
side of a pump. Maintain a minimum distance of 10 x DN on
the pressure side.
Note: During installation it must be ensured that no
water can enter the electronic unit during operation.
Examples of installation (directly immersed sensor)
You can install the meter in any position e.g. vertically or hori-
zontally. In order to avoid accumulation of air and disruption in
operation, fit the meter in a vertical installation position and not
in the uppermost area of a pipeline.
Fig.1
Siemens Building Technologies
*
This position is not permitted for cold
meters and in cases where moisture can
enter the electronic unit due to conden-
sation (e.g. during an interruption in the
summer).
Fig. 2
Fig. 3: Installation for circulation with admixing; placement of temperature sensors
Fig. 4: Installation for circulation with throttling configuration for example (flow sensor
in flow direction before control valve / differential pressure regulating valve)
Installation notes for sensor adapter set
A mounting set is included for meters with 5.2 × 45 mm tem-
perature sensor. With this you can fit the temperature sensor
directly immersed into an insert or a ball valve for example.
1. Install with O-ring at the point of installation with the fit-up
aid/pen provided.
2. Place both halves of the plastic bolting round the 3 notches
of the temperature sensor.
3. Press the bolting together and screw the bolting hand tight
into the point of installation until it comes to a stop (tighten-
ing torque 3 ... 5 Nm).
Fig. 5: Mounting adapter set
3.1 Installation for cooling metering
Fit the electronic unit separate to the volume measurement
unit, e.g. on the wall for water temperatures below 10° C. Make
a loop downwards in order to prevent condensation running
along the connected lines into the electronic unit. Install the
temperature sensors into the pipe from below.
Note: Wall adapter plates are available as an accesso-
ry.
3.2

Electronic unit

The ambient temperature of the electronic unit must not ex-
ceed 55 °C. Avoid direct sunlight.
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