19
IT
EN
FR
ES
• When tightening, be careful not to “pinch” or damage the gasket;
• Tighten the nuts or bolts gradually, in a “cross” order (see the example below);
• Tighten them, first by 30%, then by 60%, and finally 100% of the maximum torque
(see the table below according to EN 13611);
Diameter
DN 25
DN 32
DN 40
DN 50
Max. torque (N.m)
30
50
50
50
• Tighten each nut and bolt again clockwise at least once, until the maximum torque has been achieved uniformly;
Common procedures (threaded and flanged devices):
• The device can also be installed vertically without prejudicing the correct operation. It cannot be put in
upside down (with the reset knob (
17
) pointing downwards);
• During installation, avoid debris or metal residues from getting into the device;
• To guarantee mechanical tension-free assembly, we recommend using compensating joints, which
also adjust to the pipe’s thermal dilation;
• If the device is to be installed in a ramp, it is the installer’s responsibility to provide suitable supports or correctly sized
supports, to properly hold and secure the assembly. Never, for any reason whatsoever, leave the weight of the ramp only on
the connections (flanged or threaded) of the individual devices;
• In any case, following installation, check the tightness of the plant;
• Wiring cannot have cables connected directly to the coil.
ALWAYS and ONLY
use the connector identified by the
manufacturer;