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3. INSTALLATION OF TEMPERATURE SENSORS
Handle the temperature sensors carefully! The sensor cables are
fitted with coloured type labels:
Red: sensor in hot line, blue: sensor in cold line.
Make sure the sensors are mounted symmetrically. The maximum
cable length for PT100 and PT500 is 10 m. The connecting cables
must not be shortened or extended. For DN15 and DN20 the
sensors must be installed directly immersed. The free temperature
sensor can be installed in a ball valve or in a conformity-tested
pocket for this type of sensor. Ensure that the temperature sensors
are permanently connected during operation.
If the sensor is installed in a pocket, it must be inserted as far as
the bottom of the pocket and then secured.
For installation in a ball valve, a 4-piece coupling set is enclosed in
a separate bag. See procedure under Item 1...6 below.
Insert one O-ring in the sensor hole using the mounting pin sup-
plied. Only tighten the brass or plastic screw by hand (2-3 Nm);
tighten the plug screw with a torque of approx. 12 Nm.
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