68
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
Z
57
Key (Fig. 57):
A2 - P.C.B.
B1-B0 - Temperature control unit ow probe
B5-B0 - Temperature control unit return probe
E1 - Ignition glow plug
E2 - Detection electrode
E4 - Safety thermostat
E6 - Flue safety thermostat
E13 - Heat exchanger safety thermostat
M20 - Fan
T2 - Ignition transformer
Z - Control panel electrical connections compartment terminal
board
Colour code key (Fig. 57):
BK - Black
BL - Blue
BR - Brown
G - Green
GY - Grey
G/Y - Yellow/Green
OR - Orange
P - Viola
PK - Pink
R - Red
W - White
Y - Yellow
W/BK - White/Black
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