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1.54
Ultra
Comfortable indoor climate in high-end interiors
Installation and operating instructions
10.3.2 AC single-phase motors
The fan motors (230 V/50 Hz) are equipped with a single-phase winding
with capacitor auxiliary phase. The speed can be changed using a 7-stage
single-phase controller by voltage reduction (transformer principle), a
continuously variable single-phase controller, a continuously variable power
module or a KaControl recirculation air module.
10.3.2.1 Single-phase controller
The fan motor has a 230 V main winding with capacitor auxiliary winding.
The units are factory-wired to the correct direction of rotation (wiring
diagram 1).
If there is no air output then it means that the direction of rotation is
incorrectly wired!
Parallel connection of AC single-phase motor
Several Ultra units, even different models, can be connected in parallel
to a single-phase controller up to the maximum switching power of the
single-phase controller. If several Ultra units are connected to a single-phase
controller, we recommend the use of intermediate terminal boxes.
Important:
Switch the thermal contacts of all fan motors in series!
Important:
Switch the motor windings of all fans in parallel!
Suitable controllers for AC single-phase motors
Different controllers from our range are available to switch and control the
speed of the motors. The table at the top of page 27 provides an overview
of the controllers used, their switching power and the resulting max.
number of units that can be connected to a controller.
Diagram 1 Single-phase factory wiring
Wiring diagram 2 single-phase: reversal of fan direction
Reversal of fan direction by switching the wires of two motor
connection wires:
Connection: U1-Z2 ==> U1-Z1
Connection: V1-Z1 ==> V1-Z2
Control unit
Control unit
Terminal strip
Terminal strip
Motor terminal board
Motor terminal board
Ultra with motor junction box
Single-phase wiring diagrams
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