19
L
Electrical connections
to be made by the
heating engineer
N PE
230 V~50 Hz
Burner
reset
U1
U1 0-10V
signal to
modulating burner
M
Power supply
SCH1
FU
S1
6.
3A
-T
0
1
IP
TS
H2
H3
X
50-
1/
5
T1
T2
T3
T4
T5
T6
T7
T8
SCH2
H1
MO1
open
Y1
close
Y2
BSB-
4
p
BS
B
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
30-
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
X
50-
5p
X5
0
X
60-
6p
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
M
M
M
M
M
M
M
M
CL
+
CL
+
CL
+
CL
+
CL
-
CL
-
CL
-
CL
-
G+
G+
open
Y5
close
Y6
CH2 pump
Q6
N
N
N
N
PE
PE
PE
PE
QX2
QX2
N
N
PE
PE
QX3
QX3
N
N
PE
PE
EX2
EX2
QX4
QX4
FX
4
FX
4
QX4
1
BX
4
BX
4
UX
UX
B1
2
B1
2
H3
H3
BX
3
BX
3
ground
M
M
M
M
M
M
M
M
M
L1 N
N
PE
L1
1
N
2
PE
T1
B5 T6 T7 T8
T2 S3 B4
SC
SB
PI1
BR
VM1
BR1
Tsi
SE
SI1
SI2
TA
N
PE
L1
1
N
2
PI2
VM2
Tsi
N
PE
L1
PB
Components to be provided by the installer
TA Room
thermostat
SC
Boiler temperature sensor
SB
Storage cylinder temperature sensor
SE
Outdoor temperature sensor
SI1
CH circuit 1 temperature sensor
SI2
CH circuit 2 temperature sensor
BR Burner
PB
Storage cylinder pump
PI1
CH circuit 1 pump
VM1 CH circuit 1 mixer valve
PI2
CH circuit 2 pump
VM2 CH circuit 2 mixer valve
Tsi
CH system safety thermostat
NB. Connect up the various components to suit the type of boiler and the confi-
guration of the individual central heating system. Check the electrical con-
nections to the components and to the burner, referring to the instructions
provided with each item. A special interface kit must be installed with a
modulating burner with a three position controller (dry contact for increasing
heat output and dry contact for reducing heat output).
TYPICAL COMPONENT CONNECTION DIAGRAM FOR SYSTEM WITH RIELLOtech CLIMA TOP
CONTROL PANEL