13
Power supply
Cable grommets “
A
”
INTERNAL
TOP VIEW
Safety thermostat sensor
to socket in boiler
PE
N
L
Burner
reset
SENSOR side
LOAD side
Cable grommets “
B
”
Cable guides “
C
”
Cable guides “
C
”
CH CIRCUIT 1
temp. sensor
STORAGE CYLINDER temp. sensor
10V input /
Room thermostat
0-10V input /
Room thermostat
0-10 V digital / analog
programmable output
(modulating burner)
OUTDOOR temp. sensor
I.S.P. **
I.S.P. **
** Programmable
SENSOR
inputs
M
BX2
M
BX1
M
BX3
M
BX4
M
UX
M
B1
CH CIRCUIT 2 temp. sensor
M
B12
M
H1
M
H3
M
B9
M
B3
Sonda
CALDAIA
ROOM UNIT 1
ROOM UNIT 2
12 V room unit power supply
LPB data communications*
* For connecting up to 16
cascaded boilers. Lmax between
each controller = 250 metres
M
B2
MB
DB
CL-
CL+
CL-
CL+
ROOM UNIT 3
CL-
CL+
G+
CH CIRCUIT 1 mixer valve
CH CIRCUIT 1 pump
STORAGE
CYLINDER pump
BURNER
Safety chain
QX1 RELAY programmable output
QX1
N
Q2
N
CH CIRCUIT 2 pump
Q6
N
Q3
SK2
SK1
4
S3
T2
T1
N
N
L1
L
L1 S3
N
Y2
Y1 N
CH CIRCUIT 2 mixer valve
Y6
Y5 N
2-stage burner
QX2 RELAY programmable output
QX2
N
QX3 RELAY programmable output
QX3
N
Main board
QX4
FX4
EX2
QX4
RIELLOtech CLIMA TOP