24
1.53
TOP unit heaters
Unit heaters (2-stage three-phase motor/1-stage AC single-phase motor/continuously variable EC single-phase motor)
Installation and operating instructions
The fan and the KaControl recirculation air module can be
disconnected from the mains power supply by the integral
master switch.
All additional electrical components are
not
disconnected from
the mains power supply by the master switch!
0-10 VDC control signal
The 0-10 VDC control signal on input terminals AI2 and GND
(Ri = 20 kOhm) on the KathermBoard is interpreted in
accordance with Table 6 with regard to speed and valve
control. To guarantee a reliable start up, the fan is operated for
30 seconds at 120 VAC. A minimum voltage limit of 100 VAC is
factory-set.
The maximum limit can be set, as described in Chapter 9.3.2.2
via DIP switches on the power module or alternatively via the
KaControl system.
Maximum permissible cable length for the 0-10 VDC control
signal is 20 m. Use a shielded cable e.g. J-Y(St)Y, 0.8 mm.
Output terminals V1 and GND are available on the
KathermBoard to control a 24 V DC Open/Close actuator.
Maximum permissible load 0.5 A
A wet fault message 24 VDC/max. 0.5 A is available at terminals
V2 and GND after appropriate parameterisation with an
additional KaController unit.
KaControl system
Please refer to the KaControl installation instructions for unit
heater I438 for information on the KaControl system.
Voltage supply and fuse
The fan and KaControl module are together supplied by
1 supply line with 230 V/ 50Hz voltage. An LED operating
indicator is positioned on the connecting board in the
KaControl module. A unit fuse Ø5x20 mm is also installed
as a main fuse on each connecting board as well as on the
secondary side for 24 V voltage, and a TR5 fuse on the power
board and a unit fuse Ø5x20 mm on the KathermBoard. Refer
to Table 7 for values. Maximum on-site fuse 10 A.
Control
signal
Function
0 – 3 V
Unit OFF
3 – 9 V
Valve open
4 – 9 V
Min. fan speed
100%
Table 6
Connecting board
Power
board
Katherm-
Board
Main fuse
24 V voltage
Models 44, 45
and 46
T 2.5 A
T 315 mA
F 2.5 A
T 5.0 A
Model 47
T 5.0 A
T 315 mA
T 5.0 A
T 5.0 A
Table 7
Summary of Contents for Lufterhitzer TOP Series
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