Siemens UH50 Series Installation Instructions Manual page 11


Rinse the system thoroughly before installing the meter.

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.

Fit the temperature sensors in the same circuit as the me-
ter. Observe the admixtures.

Seal the temperature sensors and the fittings to protect
against manipulation.

Loosen the elastic band or the cable tie, provided for the
transport, from the volume measurement unit. In operation,
the temperature sensor and the control cable should not
depend directly on the volume measurement unit.

If you install the meter for cooling metering, follow the ap-
propriate notes.
Installation Notes
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: During installation it must be ensured that no
water can enter the electronic unit during operation.
Examples of installation
Ball valve
Fig. 1: Installation with a ball valve (recommended up to and including DN25)
Welding sleeve with pockets
Fig. 2: Installation with pockets (recommended greater than or equal to DN25)
Fig. 3: Installation for circulation with admixing; placement of temperature sensors
Siemens Building Technologies
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 (temperature
sensor directly immersed)
A mounting set is included for meters with 5.2 × 45 mm tem-
perature sensors. 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 bolding hand tight
into the point of installation until it comes to a stop (tighten-
ing torque 3 ... 5 Nm).
1. 2.
Fig. 5: Mounting adapter set
3.1 Installation for cooling metering
When installing as a cooling meter it is essential that the black
cover on the measuring tube is pointed to the side or down-
wards in order to avoid problems with condensation forming.
Fit the immersion sleeves so that the temperature sensor is
positioned vertically downwards or horizontally.
Fit the electronic unit separate to the volume measurement
unit, e.g. on the wall. Make a loop downwards in order to pre-
vent condensation running along the connected lines into the
electronic unit.
Transducer cover
Fig. 6: Recommended installation position for cooling metering
3.2 Electronic unit
The ambient temperature of the electronic unit must not ex-
ceed 55 °C. Avoid direct sunlight. For water temperatures
between 10 °C and 90 °C you can fit the electronic unit on the
volume measurement unit or on the wall.
CE2M5324xx
3.
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