Environmental Conditions; General Installation Instructions - Techem ultra S3 Instrucciones De Funcionamiento

Environmental conditions

Installation: Sufficient spacing (250 mm) between the computer unit and possible sour-
ces of electromagnetic interference • Do not connect to the building's earthing • Choose
a dry, easily accessible place
Operation: 5...55°C • IP 54 (computer unit and flow rate sensor) • < 93 % rel. humidity
Installation

General installation instructions

Observe the environmental conditions!
Note the cable lengths: Volume measuring section: max. 10m (use shielded cable),
Temperature sensor: standard 2 m, special version 10 m.
Do not carry out any welding, soldering or drilling work in the vicinity of the meter.
Only install meters in operational systems.
Protect meters against damage from impacts or vibration. When commissioning, open
the shut-off valves slowly.
Install the volume measuring section isolated from the power supply.
Ensure that the pipes leading to and from the volume measuring section are properly
secured and supported.
Volume measuring section / computer unit installation
The flow direction can be recognised from the arrows on the electronics housing.
Meters normally neither need a straight inlet nor a straight outlet pipework run.
!
Only install the heat meter in the section for which it is constructed - the outlet
variant in the low temperature section (outlet) and the inlet variant in the high
temperature section (inlet)
Suitable and unsuitable installation locations
A, B: OK,
C: not OK - air accumulation in the volume measuring section.
Installation at a high point only if a bleeding option exists.
No installation at a low point!
D: Only OK in closed systems
E: not OK - directly after a restriction or a reducing component
F: not OK - too close to the suction side of a pump
G: not OK - after a bypass loop in two levels
Observe: Distance ≥ 50 cm between the computer unit and possible sources of
electromagnetic interference.
If there are several meters in one unit: Observe identical installation conditions!
When installing the volume measuring section in the shared outlet of two circuits:
Minimum distance from the junction (T-piece): 10 x DN.
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