Connecting The Power Supply, Pump, Solenoid Valve Or Fault Display; Side); 3.4.3 Overview Of The Terminal Assignment - Buderus EM100 Instructions D'installation

▶ In the case of external inductive effects (e.g. from PV
systems) use shielded cable (e.g. LiYCY) and ground one
end of the shield. |Connect the shield to the building's
earthing system, e.g. to a free earth conductor terminal or
water pipes, and not to the connecting terminal for earth
leads in the module.
When extending the sensor leads, use the following conductor
cross-sections:
2
• 0.75 to 1.50 mm conductor cross-section for up to 20 m
2
• 1.50 mm conductor cross-section for 20 m to 100 m
▶ Route cables through the grommets provided and connect
them as shown in the connection diagrams.
3.4.2 Connecting the power supply, pump, solenoid valve
or fault display (mains voltage side)
The assignment of the electrical connection depends on which
system is installed. The description at the end of the document
in Fig. 14 to 17 is a possible suggestion for the electrical
connection. Not all steps are shown in black. This makes it
easier to see, which steps belong together.
▶ Only use electric cables of the same quality.
▶ Make sure the power supply is connected to the correct
phases.
A power supply via an earthed safety plug is not permissible.
▶ Connect only components and assemblies to the outputs as
described in these instructions. Do not connect any
additional controls that operate other system components.
▶ Route cables through the grommets, connect them as
shown in the connection diagrams and secure them with
the strain relief devices included in the scope of delivery
( Fig. 14 to 17 at the end of this document).
The maximum power consumption of the connected
components and assemblies must not exceed the power output
stated in the specifications for the module.
▶ If the mains voltage is not supplied via the electronic system
of the heat source: Install a standard all-pole isolator
(in accordance with EN 60335-1) on site to interrupt the
mains voltage.
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3.4.3 Overview of the terminal assignment

This overview indicates which system parts can be connected.
Depending on what the module is used for (coding at the
module and configuration via the control unit), connect the
system parts as specified in the corresponding connection
diagram.
The pump plugs ( Fig. 26 at the end of the document) are cut
off, and the cables to PC0 and OC0 must be adapted.
Connection diagrams with system schematics
The hydraulic diagrams are only schematic in nature and are
non-binding suggestions for a hydraulic layout. The safety
equipment must be implemented in accordance with the
applicable standards and local regulations. For further
information and options, refer to the technical guides or tender
specification.
The system components, which are marked with * in the system
schematics at the end of the document, are possible as options
depending on the control mode ( Tab. 8, page 24).
System schematics at end of this document
Connection to building management system (BMS)
(setpoint value 0-10 V); wall-mounted indoor unit;
type of control is specified via rotary selector (3, 4)
( Tab. 6, page 22)
Floor-standing appliance; low loss header, pump
outlet is specified via rotary selector (1, 2)
( Tab. 6, page 22)
Floor-standing appliance; heat exchanger, pump
outlet is specified via rotary selector (1, 2)
( Tab. 6, page 22)
Wall-mounted indoor unit GB162 V2; low loss
header, pulse width modulation pump
(can not be altered)
Table 5 A brief description of the system schematics is
provided at the end of this document
EM100 – 6721804147 (2019/10)
Figure
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25 and
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