13
MidiHeat EHD
MA45-33 GB translated from the original language of the instruction (SE)
ENGLISH
OBS!
Electric installations
•
Electric installations must be performed by a qualified electrician according to the instructions supplied with the heater.
•
Main switch should be installed before the heater, same as all the following electric connections L1, L2 and L3 (all pole
switches complying with IEC/EN 60335-1 par. 7.12.2, 22.2, 24.3.)
• Pahlén recommends to install circuit breakers.
•
Connect the heater according to the wiring diagram, see page 14.
• The control voltage is connected to terminals L1 and N.
Note that the control voltage must be fitted with a separate fuse (F5) at 5–10 Amperes for electric connections (L1, L2).
• 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. 5).
•
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).
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. See table below + wiring diagram on page 14.
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
