1).
4).
3).
2).
Wire
Roof
Ø27 (2x)
2
0
0
40
1200
1670
235
420
6
3
1
2
0
Fig. 3: Minimum safety d istances
Fig. 2: Vertical Positioning
H
a
h
A
B
E
D
C
a < H
Fig. 1: Mounting bracket
Dimension
mm
A
120
B
250
C
250
D
700
E
1800
Serial connection to via contactor and isolating switch
Model
Output
[W]
Voltage
[V]
Phase
current
[A]
Max. surface
temperature
[oC]
Weight
[kg]
FEZ336
3600
400V3N~
5.2
350
19.8
Protection class FEZ 336: IP44
Technical Data
N
L3
L2
L1
N
L3
L2
L1
1
2
3
Internal wiring diagram
Installation notes
FEZ336 heaters may be installed singularly, via a suitably rated isolating switch, preferably with a visual indicator.
However they are normally installed several at a time, in which case they are controlled via a contactor, as in the diagram above.
The cabling, contactor and isolator must be rated to carry the full current of all the heaters
The contactor can be controlled by a manual switch, thermostat, time switch, etc.
Compact enclosed isolators should be derated to allow for the effects of self heating.
FEZ336 heaters are a resistive load with low inrush currents. However to prevent nuisance tripping use type C MCB's.
Where RCD (Residual Current Devices) are used, seperate the heaters over several circuits to prevent nuisance tripping.
