25
Put a new gasket onto the external setting
device.
Attention!
Equipment may be damaged if the external
setting device is tilted or skewed when
fitted.
When screwing the external setting
device with the forked adjustment
piece onto the square nut of the
Thermovit regulator make sure that it
is upright and correctly aligned.
Put the external setting device with the forked
ajdustment piece (13) over the square nut (4)
through the bore of the cover (2). (step 1.)
Attention!
Equipment may be damaged if screwdriver
is applied to the scale.
Using a screwdriver may cause damage to
the scale of equipment type BW 31.
Make sure that the screwdriver does
not touch the scale when applying it to
the external setting device.
Fasten the external setting device with the
following tightening torque: (step 2.)
DN15 to DN25: 90 Nm
DN40: 140 Nm.
