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Operation and Maintenance
Envistar Flex
DSEF191101.05.EN
Continuous product development may give rise to specification changes without notice.
4 Wiring instructions and fuse protection
4.1 MX - Complete control equipment
Complete electrical connection to terminal without controller unit
• Code MX - units supplied prewired with complete, integrated Siemens
Climatix control equipment.
• Code UC - units supplied without controller unit but with sensor and
damper actuator connected electrically to the terminal block. Fans and
heat exchangers are fused and connected electrically to the terminal. The
terminal connections are positioned at a shared place in the unit. For further
connection to an external process unit, we recommend using a multi-
conductor cable.
Main switch
The main switch is located on the unit’s control equipment.
Wiring diagrams
For wiring diagrams for units with control equipment, see the order-unique wiring
diagram supplied with the unit at
(Control Diagram).
Unit functions, power supply and fuse protection
For power supply to the unit functions and recommended external fuse, refer
to Order Unique Documentation at
(Technical Data and
Control Diagram), or the product selection program IV Produkt Designer.
Recommended fuse protection refers to fuses with type C characteristics.
