S&P UTBS PRO-REG Series, Manual

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7.5.3. MIXING MODULE INSTALLATION
The mixing module is installed in the intake air side and allows to realize the the mixing
between the outdoor air and the recirculated air with proportional regulation of existent
dampers in either air intakes.
The mix module and the corresponding servomotors are supplied both as accessories.
The installer should mount the damper module, using the screws and bolts supplied with
the unit.
After that, mount the servomotor on the damper shaft.
Once mounted the servomotor, make the electrical connection between the servomotor
and the electrical cabinet according to the indications in the electrical diagram.
Check that the rotation sense of the actuator is correct. If it is necessary, modify the dam-
per rotation sense via the selector in the frontal of the actuator
7.5.4. INSTALLATION WITH ISOLATION DAMPER
To realise the unit isolation of the ductwork, each time that the unit is stopped, it is possible
to install one isolation damper in the unit inlet: