CTC 6246385 Notice D'installation Et D'entretien page 14

Connect RK 1.5 between L1 and fuse L.
Check that the cable is firmly attached.
Fit the red plug-in bridge between N - N. With a
1-phase version of CTC EcoAir, N - N is bridged using a
blue RK 1.5 instead of a plug-in bridge.
4