16
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
9.3.1 Three-phase motor
The three-phase outer rotor motor can be switched between
2 stages with a 2-stage three-phase switch (Y/Δ configuration).
The motor in each of the two switching configurations (Y or Δ)
can be switched between 5 stages by voltage reduction using a
5-stage three-phase controller.
The fans are operated with a clockwise rotating field!
Caution!
Operation of this unit on frequency converters is only
permitted if the frequency converter has a sine filter effective
on all poles. Missing sine filters can lead to severe thermal
damage to the fan motor. In this case, the manufacturer
accepts no warranty.
Three-phase parallel connection
Several TOP units, even of different sizes, can be connected
in parallel to a stage switch if the switching power of the
stage switch is not exceeded.
The thermal contacts of all TOP unit heaters have to be
switched in series.
If several TOP unit heaters are connected to a stage switch,
we recommend the use of intermediate terminal boxes.
Suitable three-phase switching units
Different switches from our range are available to switch and
control the speed of the motors. The above table provides an
overview of the available switches, their switching power and
the resulting max. number of TOP unit heaters, which can be
connected to a switch unit.
Max. number of connectable TOP unit heaters
Description
Type
Imax.
44 _ _ 36
45 _ _ 36
46 _ _ 36
47 _ _ 36
2-stage three-phase switch
with room thermostat connection
30049
10 A
19
13
10
5
2-stage three-phase switch with room ther-
mostat connection
30051
10 A
19
13
10
5
5-stage three-phase controller 2 A
30751
2 A
4
3
2
1
5-stage three-phase controller 4 A
30752
4 A
9
6
4
2
5-stage three-phase controller 8 A
30754
8 A
18
12
9
5
Electronic 2-stage three-phase controller
30177
10 A
19
13
10
5
30277
Switching stage 1
Y-connection
Switching stage 2
Delta connection
TOP with
motor junction box
9.3 Electrical wiring
Damage can be caused by the use of incompatible switching
devices and inadequate protective equipment.
The manufacturer does not accept any warranty in these cases.
Only connect up units that have a circuit breaker which switches
off all poles from the mains power supply with a minimum
contact gap of 3 mm!
Содержание Lufterhitzer TOP Series
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