Connections wiring diagram.
Key:
B3-2 - Zone 2 flow probe
E7-2 - Zone 2 Safety thermostat (low temperature)
M10-2 - Zone 2 circulator
M31-2 - Zone 2 mixing valve
MAIN PANEL
Colour code key:
BK - Black
G/Y - Green/Yellow
OR - Orange
14
BL - Blue
BR - Brown
R - Red
W - White
Fig. 5
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