Unical DUA plus, Installation And User Instruction Manual

Page: 20 / 32

20
Installation info
KEY
A1...A8 = Connectors
ROD = Connector of the ionisation on
the ignition PCB
Y1 = Connector TA - Outer sensor
Y2 = Connector for supply 230 V-50
Hz
DK = Pressure switch against lack of
water
E. RIV. = Ionisation probe
E. ACC.1= Ignition electrode 1
E. ACC.2= Ignition electrode 2
FL = DHW flow switch
MD = Modulatin g coil
MVD = Three way valve actuator
(only for E version)
P = Circulating pump
PV = Fan pressure switch
(only for TFS version)
SE = Outer sensor (option)
SR = Heating temperature sensor
SS = D.H.W. temperature sensor
TA 1 = Modulanting digital programmer
(option)
TA 2 = Room thermostat (option)
TF = Smoke antispillage thermostat
TL = Safety thermostat
V = Fan (only for TFS version)
VG = Gas valve
fig. 21
D
ISPL
A
Y
PC
B
A8
65
4
3
2
1
654
3
2
1
YEL /G RE EN
BLU E
GRE EN
WHIT E
RED
BRO WN
P
DHW
CH
MV
D
YEL/G REEN
BLU E
BRO WN
PR
3
E.
R
IV
.
WHIT E
RO
D
A6
V2
V1
VG
h
one
y
we
ll
BRO WN
BRO WN
BLU E
BLU E
SICUR EZ ZA
MOD UL AZ IO NE
RE
D
E
. A
CC.
1
YEL /G RE EN
AL
IM
E
N
T
A
Z
.
T
RAS
F
O
RM
A
T
O
R
E
A
C
CE
NS
IO
NE
A9
BRO WN
V
BLU E
YE L/G REEN
65
43
2
1
7
32
1
SR
GR EEN
BRO WN
WHIT E
BLU E
8
765
432
1
A3
432
1
A1
7654
321
54
32
1
A4
A2
SO
L
O
VE
R
.
C
WHIT E
WHIT E
WHIT E
WHIT E
WHIT E
WHIT E
BLU E
BLU E
BLU E
BRO WN
BRO WN
RED
RED
GR EEN
V
E
RS
IO
NE
TN
VER
SIO
N
E
TFS
543
21
DK
SS
F
L
T
F
TL
PV
T
L
MD
RE
D
E
. A
CC.
2
65
4
3
2
1
GRE E
WHIT E
RED
BRO WN
BLU E
YEL/G RE EN
PR
RED
WHIT E
GRE EN
DHW
CH
6
3 2
MV
D
(H
O
N
E
Y
W
E
LL)
MV
D
BR
O
W
N
SE
TA
1
BL
A
C
K
BL
U
E
YEL
/G
R
EEN
L1
N
L1
N
AL
IM
E
N
T
A
T
IO
N
230
V
-
50 H
z
IG
54
321
G
ND1
G
ND2
G
ND4
RO
D
N
Y2
G
ND5
L1 EXT
SENSOR
Y1
A8
7
654
32
1
43
21
76
54
8
32
1
2
1
21
A6
A9
A3
A
1
A2
A4
TA
2
EV
Z
2.3 - ELECTRICAL WIRING
2.3.1 - ACTUAL CONNECTION DIAGRAM