Immergas MAGIS PRO 12 V2 Instructions And Recommendations page 60

Key (Fig. 34):
A2 - P.C.B.
A16-1 - Zone 1 dehumidifier (optional)
A16-2 - Zone 2 dehumidifier (optional)
A19 - Two-relay board (optional)
60
Colour code key (Fig. 34):
BK - Black
BL - Blue
BR - Brown
G - Green
GY - Grey
G/Y - Yellow/Green
OR - Orange
P - Purple
PK - Pink
R - Red
W - White
Y - Yellow
W/BK - White/Black
34