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M r
D.H.W. load pump
M
A
Circulation pump (Circuit A)
M
B
Circulation pump (Circuit B)
M
BO
Pump
Boiler pump
M
SAN
Pump
DHW pump
?
Burner
C
Telephone relay
*
Only with HL tank
k
V3V
3-way valve
BUS SU
Connector MODBUS
HMI
Control interface
J-
PCB connector SCU
L
Live
N
Neutral
PCU
Primary control unit
SCU
Secondary control unit
SONDE
AMB A
Room sensor (Circuit A)
SONDE
AMB B
Room sensor (Circuit B)
SONDE
AMB C
Room sensor (Circuit C)
SONDE
DEP B
Flow sensor (Circuit B)
SONDE
DEP C
Flow sensor (Circuit C)
SONDE
ECS
Domestic hot water sensor
SONDE
EXT
Outside sensor
SONDE
SYST
System sensor
V3V
3-way valve
SONDE
DHW In
Domestic cold water sensor
SPL1
Splice
X-
PCB connector
X111
SU bus connector
X112
Water pressure gauge
X113
Flue gas limiter pressure switch
X114
Return temperature
X115
Flow temperature
AFC 18 - AFC 24 - AFC 30
5. Installation
09/07/2015 - 300026439-07
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