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00BNO9168-I (U0606551)
VARMAX -
Installation, Use and Maintenance
L
N L3
N
L3 L
N
QX2
QX3
QX1
BX2
Gnd
BX3
Gnd
B3
Gnd
B9
Gnd
H1
Gnd
H5
Gnd
Mains supply 230
VAC 50 Hz
}
}
}
AVS75
QX21
N
QX22
N
QX23
BX21
Gnd
BX22
Gnd
H2
Gnd
}
}
}
}
Module 1
Flow sensor for regulated circuit
B1
Mixing valve for heating
circuit No. 1 Y1/Y2
Circulator for heating circuit
No. 1 Q2
External sensor B9
Alarm
relay
Direct
circulation
pump Q15
C. CUSTOMER ELECTRICAL CONNECTION
D. SPECIFIC START-UP PROCEDURE
"
Fit the accessories and make their electrical connections.
"
Start up the boiler alone.
"
Make the following settings.
WARNING:
Ensure the switches on extension module AVS75 are correctly
configured.
Diagram VX120
page 2 / 4
Shunt to install
Gnd UX3 Gnd UX2
If an external management
system (e.g. PLC) or a
command
pump
(boiler,
heating and/or DHW circuit)
is connected, refer to § 9.4 for
the specific configuration).