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plate of the cable glands.
When the work is finished, close all of the
removed covers applying the screws and gaskets
(if included).
5.7.2
Power supply terminal block
The electrical wiring to the terminal blocks has to be done only by qualified personnel.
The electrical wiring has to be done only by qualified personnel.
The connection terminal block is below
the cover of the machine. To reach it, see the instructions in paragraph 5.8.1. The terminal block must be
connected according to the following notes.
The connections indicated below are standard. Other connections are shown in the MCO manual of the
machine controller of the Vitocal 100-A units (see “USER AND INSTALLER CONFIGURATION TABLES”),
according to the setups.
TERMINAL
CONNECTION
TYPE
X-1
Connect the earth cable
Inlet for power supply 1-
Ph/N/PE,230V, 50Hz
(only for sizes 06/08/10/12/14/16)
N
Connect the neutral cable from the mains
L
Connect the phase cable from the mains
PE
Connect the earth cable
Input for power supply 3-Ph/N/PE,
400 Vac, 50Hz.
(only for sizes 14T and 16T)
N
Connect the neutral cable from the mains
L1
Connect the phase cable L1 from the mains
L2
Connect the phase cable L2 from the mains
L3
Connect the phase cable L3 from the mains
X-5.2
Connection of modbus RTU for remote keyboard
Modbus communication
X-5.1
Connection of modbus RTU signal – for remote keyboard
X-4.1
Connection of modbus RTU earth reference for remote
keyboard (GND)
X-12.1
Remote keyboard power supply (12V, 50Hz, 500mA)
Output for power supply 12Vac,
50Hz
X-12.2
Remote keyboard power supply (12V, 50Hz, 500mA)
X-17.1/X-
17.2
DHW probe (SAN1)
Analogue or digital input
X-19.1/19.2
Plant remote probe (IMP1)
Analogue input
X-20.1/X-
20.2
Double set point (Q4)
Analogue input
X-22.2
0-10V (+) signal input to modify set point
Analogue input (ST10)
X-22.1
0-10V (-) signal input to modify set point
X-6.1/X-6.2
Plant heater (Rimp)
Output in single phase voltage
230Vac, 50Hz, 5A resistive, 1A
inductive.
Can be used in versions without KA
X-9.1/X-9.2
Exchanger heater (R2)
Output in single phase voltage
230Vac, 50Hz, 5A resistive, 1A
inductive.
Can be used in versions without KA
X-10.1/X-
10.2
Base heater (R3)
Output in single phase voltage
230Vac, 50Hz, 5A resistive, 1A
inductive.
X-11.1/X-
11.2
Domestic hot water valve outlet (VS1)
Changeover contact, single phase
voltage 230Vac, 50Hz, 5A resistive,
1A inductive.
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