93
FAMILY CX
AKM0x
X17
X14
1
1
X12
X23
X16
X2
X21
X8
X13
X19
X9
X25
X11
X18
X22
1
1
1
1
1
1
1
1
6
1
5
12
10
4
3
5
4
6
5
6
X15
X1
X4
X6
1
3
1
5
1
2
1
6
X3
X7
arancione
E.R.
F2=4A T
CN1
X10
A9
SW1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
- A B +
TA TBOL TBT SE OT+ SBOL X1
X2
9 10
7 8
5 6
1 2
14 15 16 17
nero (TA)
nero (TA)
rosa (OT+)
rosa (OT+)
arancione (SE)
arancione (SE)
6
1
1
2
5
1
rosso (+)
giallo (B)
arancione (A)
nero (-)
giallo (B)
nero (-)
rosso (+)
arancione (A)
bianco (TBT)
bianco (TBT)
(OT+)
(SE)
(TBT)
(TA)
+
-
A
B
X11
X14
X25
M20
D
Voltage free contact input
REC
2
1
3
5
4
rosa
blu
P
marrone
marrone (+)
blu (-)
PWM
1
2
4
3
OPE
OPE
1
3
X8
blu
marrone
marrone
6
3
1
2
4
5
blu
blu
marrone
230 V
NL
F
M3
B
M4
blu
blu
marrone
marrone
blu
F= 3.15 A F
marrone
X1
TSC2
blu
EA
marrone
giallo/verde
N
F
X6
3
1
2
marrone
X15
blu
V Hv
1
2
rosso (+)
blu (HS)
rosa (PWM)
grigio (-)
X13
V Lv
1
4
bianco bianco
S.M.
-t°
-t°
S.R.
rosso
rosso
-t°
S.F.
grigio
grigio
giallo
T.L.A.
blu
blu
1
12
giallo
X9
C
rosso
4
3
2
1
5
rosso blu viola bianco
3V
X12
grigio grigio
rosso rosso
nero (alim.)
blu (sign.)
marrone (-)
S.S.
MOD
T.P.
1
3
1
X19
10
F.S.
1
3
arancione (-)
blu (sign.)
viola (alim.)
C.S.A.
marrone
blu
5
3
1
2
4
X4
Fig. 2
[EN] - Multiwire wiring diagram
“L-N” POLARITY IS RECOMMENDED
Blu=Blue
Marrone=Brown
Nero=Black
Rosso=Red
Bianco=White
Viola=Violet
Rosa=Pink
Arancione=Orange
Grigio=Grey
Giallo=Yellow
Verde=Green
A
= Gas valve
B
= 230V auxiliary
C
= Not used
D
= Voltage free contact input
AKM0X
Control board
REC
Remote control panel
X1-X25-CN1
Connection connectors
S.W.1
Chimney sweep and interruption of
the vent cycle
E.R.
Flame detection electrode
F
External fuse 3.15A F
F2
Fuse 4A T
M3-M4
Terminal board for external
connections: 230V
M20
Electrical box for external
connections
(- A B +) Bus 485
TA
Room thermostat
(contact must be free of voltage)
TBOL
Not used
TBT
Low temperature limit
thermostat
SE
Outdoor temperature
sensor
OT+
Open therm
SBOL
Not used
X1 - X2 Not used
P
Pump
PWM
PWM signal pump modulation
OPE
Gas valve operator
V Hv
Fan power supply 230 V
C.S.A.
Semi-automatic heating system
loading
TSC2
Ignition transformer
E.A.
Ignition electrode
T.L.A.
Water limit thermostat
S.F.
Flue gas probe
S.M.
Temperature fl ow sensor on primary
circuit
S.R.
Temperature return sensor on
primary circuit
F.S.
Domestic hot water fl ow switch
S.S.
Domestic hot water circuit
temperature probe
T.P.
Pressure transducer
MOD
Modulator
V Lv
Fan control signal
3V
3-way valve stepper servomotor
