13
MidiHeat EHD
MA45-33E
ENGLISH
OBS!
The incoming cables to the contactors
(K1A-K4A) must be connected according to
the wiring diagram on the picture.
NOTE!
It is important that the screwdriver is of
the right size, pressed into the right hole
and in the right way.
Fig. 4
The electric heater is factory wired for 400V 3-phase, but can be switched to 230V 3-phase (applies to all versions except
72kW). See table below + wiring diagram on pages 6 and 7.
•
If a motor protection auxiliary relay for the pool circulation pump is available, it must be connected to terminals P1 and P2,
see attached wiring diagram for the voltages and number of phases. When motor protection is switched on, the circuit should
be closed, potential-free changeover contact.
• Do not connect the heater to a faulty power supply. Contact your local power company for correct power supply. Voltage to
the heater must not vary by more than + 5% to -10% according to the model and nameplate specification.
•
Incoming cables to the control circuit must always be secured at 5-10A.
• Incoming cables to the contactors must be secured under the table for the current operating voltage, check the product
nameplate and see the respective wiring diagram and table (Fig. 6 or 7).
•
At 2-10 devices connected in parallel, they can all be controlled from an electric heater instead of individual temperature
adjustment for all other electric heaters. Connections are made by means of a 2-wire communication cable (min. 0,25mm²)
on terminal J4, between each circuit boards of the electrical heaters (daisy chain).
NOTE!
3~ 380–415V
Effect
Fuse F1-4
Min. cable area*
Heating element connected for 380-415V 3-phase
2x9 = 18kW
20A
2,5 mm
2
2x12 = 24kW
25A
4 mm
2
2x15 = 30kW
32A
6 mm
2
3x12 = 36kW
25A
4 mm
2
3x15 = 45kW
32A
6 mm
2
4x15 = 60kW
32A
6 mm
2
4x18 = 72kW
32A
6 mm
2
White
Pink
Blue Blue
White
Pink
Fig. 5
3~ 220–240V
Effect
Fuse F1-4
Min. cable area*
Heating element connected for 220-240V 3-phase
2x9 = 18kW
32A
6 mm
2
2x12 = 24kW
50A
10 mm
2
2x15 = 30kW
50A
10 mm
2
3x12 = 36kW
50A
10 mm
2
3x15 = 45kW
50A
10 mm
2
4x15 = 60kW
50A
10 mm
2
White
Pink
Blue Blue
White
Pink
Fig. 6
