15
TOP unit heaters
1.53
Unit heaters (2-stage three-phase motor/1-stage AC single-phase motor/continuously variable EC single-phase motor)
Installation and operating instructions
Continuously variable power module type V
The thermal contacts switch off the motor via the stage switch
whenever the motor heats up inadmissibly (without locking the
motor!). A potential-free NC contact offers the option to lock
the 0-10 V control signal to "0 V" via an on-site controller.
The unit is not short circuit-proof! The device will be damaged
beyond repair if the motor cable short circuits. Even when the
motor is idle, the motor cables (U1 and U2) still carry mains
potential!
KaControl recirculation air module type ...31C1
The thermal contacts switch off the motor via the KaControl
module whenever the motor heats up inadmissibly. In addition,
the KaControl system sets the speed signal to 0 V. In neither
case is the motor locked!
The unit is not short circuit-proof! The device will be damaged
beyond repair if the motor cable short circuits. Even when the
motor is idle, the motor cables (U1 and U2) still carry mains
potential!
9.2.2 EC fans
All EC fans have an integral overload protection; no upstream
motor protection device is needed.
Electromechanical control
The motor junction box contains a relay with a potential-free
changeover 24 to 250 V/ 2 A. This signals a fault of the fan or
power failure only for types 45xx33, 46xx33 and 47xx33. In
fault mode, the relay is energised (Contact C – NO closed). In
the event of a fault, the relay becomes de-energised (Contact
C - NO open)
There is no fault signal contact in fan types 44xx33, 44xx34 and
45xx34 and therefore no fan fault or power failure is reported!
KaControl recirculation air module type ... 33C1/34C1
This is signalled to the KaControl system in the event of a fan
fault type 45xx33C1, 46xx33C1 and 47xx33C1 and the red LED
in the housing lights up.
There is no fault signal contact in fan types 44xx33, 44xx34 and
45xx34! In the event of a power failure at the unit heater, there
is no signal via the KaControl system and the red LED does not
light up.
Fan fault indicator
Summary of Contents for Lufterhitzer TOP Series
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