11
Attention!
Risk of malfunctions or damage due to
incorrect setting of Thermovit regulator.
Make sure that only qualified
personnel change the closing
temperature setting.
Do not adjust a closing temperature
that is below the factory-set closing
temperature.
To lower the closing temperature turn the star
grip knob clockwise.
To raise the closing temperature turn the star
grip knob anticlockwise.
To check the setting measure the return
temperature of the fluid downstream of the
equipment.
Repeat the setting procedure if the return
temperature does not meet the set value.
Adjusting the closing temperature for BW 31A
The closing temperature is set via the slide lift.
When the equipment is delivered, the following
temperature settings as a function of nominal size
are possible:
Factory setting for BW 31A with external
setting device
Nominal
size
Closing
temperature
[°C]
Set value X
[mm]
Lift
Y
[mm]
DN15
90
27.0
4.6
DN20, DN25
70
27.6
4.0
DN40
70
48.4
6.6
These factory settings are calculated for ambient
temperatures of 18 – 21 °C.
To change the settings proceed as follows:
WARNING
Injuries such as burns or poisoning may
occur if fluid escapes through the external
setting device.
Make sure that the twin nipple of the
external setting device is fixed and
cannot work loose.
Use an open-end spanner (US: wrench) to
secure the twin nipple (16) against inadvertent
misadjustment.
To loosen the locknut (15) turn it anticlockwise.
To raise the closing temperature turn the
adjustment stem (14) anticlockwise.
Attention!
Risk of malfunctions or damage due to
incorrect setting of Thermovit regulator.
Make sure that only qualified
personnel change the closing
temperature setting.
Do not adjust a closing temperature
that is below the factory-set closing
temperature.
