IDEAL EVO S 50 Installation And Servicing page 97

Boiler No. 2 (and the following ones):
PWM
Boiler pump, if
supplied by IDEAL
Mixing valve
QX21
heating circuit n°3
Y1.2/Y2.2
QX22
Heating circuit No. 3
circulator Q2.2
QX23
Mixing valve
QX21
heating circuit n°4
Y5.2/Y6.2
QX22
Heating circuit No. 4
circulator Q6.2
QX23
27.08.2018
Diagram: VF11
GND
N
L
Alarm relay
N
N
N
L
N
N
N
L
If a command pump (boiler, heating and/or DHW

circuit) is connected, refer to § 9.4 for the specific
configuration)
AGU 2.550
n° 1
Boiler pump, if
supplied by customer
AGU 2.550
n° 1
AGU 2.550
n° 2
EVO S - Installation and Servicing
page 3 / 9
AGU 2.550
n° 2
230 VAC 50 Hz
power supply
}
Module 1
U+
BX22
}
M
Regulated circuit
BX21
output sensor
M
B1.2
H2
}
Module 2
U+
BX22
}
Regulated circuit
M
output sensor
BX21
B12.2
M
H2
DB MB
LPB Bus
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