Connecting The Power Supply, Pump And Mixer (Mains Voltage Side); 3.2.3 Connection Diagrams With System Schematics - Bosch MP 100 Installation Instructions For Contractors

Installation
Maximum total length of BUS connections:
2
• 100 m with 0.50 mm
2
• 300 m with 1.50 mm
▶ To avoid inductive interference: Make sure all low-voltage
cables are routed separately from supply voltage carrying
cables (min. clearance 100 mm).
▶ 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 mm to 1.50 mm
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.
3.2.2 Connecting the power supply, pump and mixer
(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. 8 to 11 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. 8 to 11 at the end of this document).
13
conductor cross-section
conductor cross-section
2
conductor cross-section for up
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.

3.2.3 Connection diagrams with system schematics

The hydraulic diagrams are only schematic in nature and are
non-binding suggestions for a hydraulic layout.
▶ Provide safety equipment as required by applicable
standards and local regulations.
▶ For further information and options, refer to the technical
guides or tender specification.
Legend for Fig. 16 at end of document:
Protective conductor

Temperature/temperature sensor
L Phase (mains voltage)
N Neutral connection
Connecting terminal designations:
230 V AC Mains voltage connection
BUS Connection of BUS system EMS 2/EMS plus
MC1 Connection for heat demand from external
swimming pool control unit (Monitor Circuit,
optional)
MD1 Without function
OC1 Without function
PC1 Without function
T0 Without function
TC1 Connection of swimming pool temperature sensor
(Temperature sensor Circuit)
VC1 Connection of mixing valve motor (Valve Circuit):
Terminal 43: mixer open (less heat supplied to
swimming pool)
Terminal 44: mixer closed (more heat supplied to
swimming pool)
MP 100 – 6721819201 (2020/02)