Electric Heaters - France Air ECM Notice Technique

5.2.4. SIZE 8000 TO 16,000 MOTOR WIRING DIAGRAM (400 VAC THREE-PHASE)
Motor

5.3. ELECTRIC HEATERS

5.3.1. CONNECTION RECOMMENDATIONS
Since the control system is not supplied with the heaters, you need to:
- fit in a control circuit the opening thermal protectors + manual and opening reset + automatic reset, connected
in series.
- monitor for flow shortages (e.g. with a pressure switch). The resistors must never be powered in the absence
of ventilation.
- a post-ventilation time (e.g. with a time lag relay), to dissipate the residual heat from the resistors before the
ventilation is switched off.
- connect the resistors to a contactor, and never directly to the mains power supply.
50 ______________________________________________________________ NT 1963 E – 07/2020
PE Earth
L1 Supply, phase 1
L2 Supply, phase 2
L3 Supply, phase 3
24V + 24V DC output
10 V + 10V DC output
0V GND
D1 Digital input (fan on/off), shunted from the factory
E1 0-10V analogue input (rotation speed control)
K1 (11-14) Alarm contact max. 2A, 250 V (see
remontés par la sortie K1
Annexe : Défauts
, page 29)