
S1
B
S
B
S
B
S
B
S
M-T
M-T
B
S
B
S
B
S
B
S
B
S
B
S
B
S
B
S
B
S
B
S
B
S
B
S
B
S
B
S
SS
1
3
2
20
10
10
5
16
8
16
1
6
1
6
FUSE 24V
FUSE
230 VAC
2 (X)
ALARM CONTACT
3
12
4
1
11
1
RS232
4
1
21
2
1
2
1
2
1
2
1
2
VTE
Limit Thermostat 1
Water
Limit Thermostat
Fluegas
Fan 24 VDC
Transformer
Three way Valve
(Combi Only)
Ignition/
Ionisation
Supply
230V AC
Boiler
Pump
Outside Air Temperature Sensor (3+4)
Cylinder Thermostat or
Hot Water Temperature Sensor (1+2)
External LPG Solenoid Valve (L1+N) + PE
or Heating Pump
Room Thermostat (L1+L2)+PE
MRO3 (L1+N)+PE
HWS Primary Pump/Divertor Valve (L1+L2)+PE
Mains Voltage Rail
Room Unit (R1+R2+R3)
Low Voltage Rail
No Function
Flow Temperature Sensor
Return Temperature Sensor
Cold Water Inlet Temperature
Sensor (Combi only)
Instantaneous H.W. Flow
Temperature Sensor
(Combi only)
KO = White
K2 = Brown
K3 = Green
K4 = Gray
K5 = Orange
K6 = Blue
K7 = Red
K8 = Black
Gas Valve
X10
X12
X14
X13
K5
K5
K6
K6
K7
K7
K7
K3
K0
1
2
3
4
R1
R2
RE2132
T
R3
K4
K0
K6
K0
K7
K14
K3
K9
K13
K2
X17
X16
STBW
STBA
X18
X19
X47
51
Fan
+SO
PW-
X51
X26
X30
X31
X31
EL
PE
X23
X22
X28
X29
X25
X41
X27
K9
K8
K8
K18
K12
K19
K17
K20
K20
1
2
3
4
L
L1
7
6
5
++
+
2
1
4
3
N
L1
N
L2
L1
N
N
PE
IO
PE
PE
PE
N
L
PE
N
L
L
N
PE
41
1
2
1
-+
2
3
L
6
7
4
3
N
L
N
PE
L
N
PE
PE
PE
1
4
2
5
3
4
5
6
1
2
3
5
6
6
5
4
3
J6
J5
2
1
RTE
S4
X1
X2
X3
MRO3
MIXER
X4
X5
X6
X7
X8
HSP TOP
PE
FURIMAT 762
X9
F
BTE
S3
STE
S5
K9 = Violet
K12 = Yellow/White
K13 = Braun/White
K14 = Green/White
K17 = Blue/White
K18 = Red/White
K19 = Black/White
K20 = Violet/White
K8
T
STRATA1
3 8 & 3 8 / 4 6 C O M B I
37
18.0 electrical connections (contd)
plan of internal electrical connections