User Manual

34
Smart Infrastructure
CE2N5324en
2019-06-27
Scope of delivery
Operating and installation instructions in multiple languages are included with the ultrasonic
heat and heat/cooling meters.
Languages
The instructions are supplied in 18 languages:
Bulgarian, Chinese, Croatian, Czech, Dutch, English, French, German, Greek, Hungarian,
Italian, Norwegian, Polish, Russian, Slovakian, Slovenian, Spanish, and Turkish.
Notes
Mounting
Flow measuring section
The mounting position is optional, the mounting location (return) must be in accordance with
the type of meter used.
NOTICE
The flow measuring section must be installed in the return on types UH50-A.., UH50-C..,
and UH50-G...
Settling paths are not required, neither upstream of nor downstream from the meter. If the
meter is installed in the common return of 2 heating circuits (e.g. space heating and DHW),
the mounting location must be at an adequate distance from the T-piece (min. 10 x DN) to
allow the different water temperatures to properly mix.
Thoroughly flush the plant prior to installing the meter.
Install the flow measuring section between 2 shutoff valves with the arrow pointing in the
direction of flow. The sensors must be mounted in the same water circuit as the flow
measuring section (observe mixing). Do not separate, shorten, or extend the lines.
Connect the individual wires according to the wiring diagram printed on the meter.
The sensors can be fitted in T-pieces or ball valves, or can be immersed, either directly or in
pockets (observe all national regulations).
NOTICE
In Germany, the temperature sensors must be installed submerged for meters to q
p
6 and
to PN16. Immersion sleeves only have to be used in case of higher stress levels.
In any case, the end of the sensors’ probe must extend to at least the pipe center.
Temperature sensors and fittings must be sealed to prevent tampering. Overpressure must
prevent cavitation across the entire measuring range, that is, at least 1 bar with q
p
and
approximately 3 bar with q
s
(at 80 °C).
Only authorized personnel are allowed to remove and replace calibration seals when
carrying out service work.