30
Instructions for the installer
3.12 - WIRING DIAGRAMS
A1...A8 = Service connectors
E.ACC. = Ignition/detection electrode
DK = Minimum water pressure switch
P = Pump
MDV = Motore valvola deviatrice
SR = CH flow sensor
SRR = CH return sensor
SS = DHW sensor
TL = Limit thermostat
TF = Smoke thermostat (optional)
VG = Gas valve
VM = Modulating fan
Y1..Y3 = Connector:
Note: The figures shown on the scheme of
actual connection are purely indicative.
A4
A1
A3
A5
A2
A6 A8
Y2
X3
Y1
A11
A9
VM
1
2
3
4
5
6
BLACK
GREEN
BLUE
ORANGE
LIGHT BLUE
BROWN
WHITE
YEL/GREEN
RED
YEL/GREEN
LIGHT BLUE
BROWN
VG
TRASF.
ACC.
BLUE
LIGHT BLUE
BROWN
BROWN
TL
SS
SRR
SR
DK
BLACK
WHITE
GREEN
GREEN
WHITE
WHITE
WHITE
BROWN
LIGHT BLUE
LIGHT BLUE
P
MVD
230 V - 50 Hz
To m a in
switch
LIGHT BLUE
BROWN
BLACK
YEL/GREEN
E.ACC./RIL.
BLACK
HEATING
DHW
TF
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