25
Ultra
1.54
Comfortable indoor climate in high-end interiors
Installation and operating instructions
Three-phase wiring diagrams
Connection to 2-stage switch unit
Connection to 5-stage switch unit
Low speed: Y-connection
High speed;
D
-connection
Suitable three-phase switching units
Different switches from our range are available to
switch and control the speed of the motors. The
table at the bottom of page 24 provides an overview
of the switching units used, their switching power
and the resulting max. number of Ultras that can be
connected to a controller.
2-stage, three-phase controller
To more Ultra
Terminal strip on
the unit heater
5-stage three-phase controller
5-stage three-phase controller
Terminal strip on
the unit heater
