
20
L
Electrical connections
to be made by
the heating engineer
N PE
230 V~50 Hz
Burner
reset
Power supply
open
Y1
close
Y2
BSB-
4
p
BSB
N
A
/0
-10V
H1
CH1 pump
Q2
QX1
QX1
St.cyl. pump
Q3
1st stage
L1
PE
PE
T1
T1
N
N
T2
T2
X
3
0-
10p
X3
0
L1
L1
S3
S3
N
N
CH1 snsr
B1
BX
1
BX
1
ground
M
Boiler snsr
B2
DHW 1 snsr
B3
Outdoor snsr
B9
ground
M
BX
2
BX
2
LP
B
-4p
LP
B
ground
M
X5
0
-5
p
X5
0
X6
0
-6
p
X6
0
LP
B
DB
ground
MB
L
L
PE
PE
S3
S3
4
4
SK
2
SK
2
SK
1
SK
1
N
N
N
N
N
N
N
N
PE
PE
PE
PE
PE
PE
PE
PE
TA-M
M
M
M
M
M
M
M
CL
+
CL
+
CL
+
CL
+
CL
-
CL
-
CL
-
CL
-
G+
G+
SCH1
FU
S1
6.
3A
-T
0
1
IP
TS
H2
H3
X50-1/5
T1
T2
T3
T4
T5
T6
T7
T8
SCH2
H1
MO1
FU
Fuse (6.3 A-T)
IP Main
switch
SCH1 Main
board
SCH2 Display and control card
TS
Safety thermostat (110°C +0/-6)
H1
Electrical power indicator
H2
Safety thermostat trip indicator
H3
Burner lockout indicator
S1
Remote burner reset button
MO1 Connection
terminals
FUNCTIONAL ELECTRICAL DIAGRAM FOR RIELLOtech CLIMA COMFORT CONTROL PANEL