techem 64251258, Operating Instructions Manual, Page: 11 / 146

11
Environmental conditions
• Operating conditions / measurement range :
Temperature measurement measuring range: Q 0 °C...105 °C ∆Q 3 K...100 K
Medium temperature range (heat meter): Q 15 °C...90 °C
• Ambient temperature: Q 5 °C...55 °C
• Radio (if activated):
Transmission frequency: 868.95MHz
Transmission rating:< 25mW
•
Output measurement: Cycle 32 sec.
•
Installation: Non-condensing surroundings, closed rooms
(except the volume measuring section)
•
Do not disconnect the volume measuring section and temperature sensors from the
computer unit.
Installation
General installation instructions
• Observe the environmental conditions!
• The heat meter must be protected against magnetite and dirt for the device’s entire
working life.
• Shut-off valves must be installed in front of the strainer and behind the heat meter.
!
When selecting the installation location, pay attention to the length of the fixed
connected sensor cable.
• 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 damages from impacts or vibration.
When commissioning, open the shut-off valves
slowly
.
!
Both the installation location (inlet/outlet) and the energy unit (kWh/GJ) must be
known when commissioning.
Depending on the delivery status of the device, these settings must be changed
when commissioning!
Installing the measuring capsule heat meter
!
Use the same installation method within one property!
The display must be accessible at all times and readable without further aids.
The meter may only be installed in the original connector.
Adapters are not allowed (EN1434/14154).
GB