Bosch MS 200 Installationsanleitung Seite 27

When sensor leads are extended, use the following conductor cross-
sections:
2
• Up to 20 m with 0.75 mm
• 20 m to 100 m with 1.50 mm
▶ Route cables through the grommets provided and connect them as
shown in the connection diagrams.
Terminal designations (extra-low voltage side ≤ 24 V)
 from Fig. 20 at the end of the document
BUS BUS system EMS 2/EMS plus
1)
IS1...2 Port For heat metering (Input Solar)
2)
OS1...2 Port Connection for speed control pump
with pulse width modulation or 0-10 V(Output Solar)
TS1...8 Connection to temperature sensor
(Temperature sensor Solar)
1) Terminal assignment:
1 - earth (water meter and temperature sensor)
2 - flow rate (water meter)
3 - temperature (temperature sensor)
4 - 5 VDC (power supply for vortex sensors)
2) Terminal assignment: (Terminal 1 and 2 polarized):
1 - mass
2 - pulse width modulation/0-10 V (output)
3 - pulse width modulation entrance (input optional)
Table 5
3.2.2 Connecting the power supply, pump and mixer
(mains voltage side)
The allocation of the electrical connections depends on the system
installed. The description at the end of the document in Fig. 8 to Fig. 15
is a possible suggestion for the electrical connection. Some steps are not
shown in black. This makes it easier to see, which steps belong together.
▶ Only use electric cable of similar quality.
▶ Ensure the power supply is connected to the correct phases.
A power supply via an earthed safety plug is not permissible.
▶ Only connect components and assemblies to the outputs in
accordance with these instructions. Do not connect any additional
controls, which control other system components.
The maximum power consumption of the connected components and
assemblies must not exceed the output stated in the module
specifications.
▶ 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 disconnect the mains voltage.
▶ Route cables through the grommets, connect them as shown in the
connection diagrams and secure them with the strain reliefs included
in the scope of delivery ( Fig. 8 to 15 at the end of this document).
Terminal designations (mains voltage side)
 from Fig. 20 at the end of the document
120/230 V AC Mains voltage connection
PS1...5 Connection to pump (Pump Solar)
VS1...2 Connection to 3-way valve or 3-way mixer
(Valve Solar)
Table 6
MS 200 – 6720879925 (2017/11)
2
to 1.50 mm conductor cross-section
2
conductor cross-section
3.2.3 Wiring diagrams with unit examples
The hydraulic diagrams are only schematic illustrations and provide a
non-binding indication of a possible hydraulic circuit. Install safety
equipment in accordance with applicable standards and local
regulations. For further information and options, refer to the technical
guides or tender specification.
Solar systems
You will find the required connections for MS 200, and, if applicable, at
MS 100 and the corresponding hydraulics diagrams for these examples
are presented in the appendix.
The designation of the wiring diagram to the solar system can be made
easier by answering the following questions:
• Which solar thermal system
• Which functions (shown in black) are available?
• Are additional functions
system can be expanded with the additional functions
(shown in grey).
An example of the configuration of a solar system is included in these
instructions as a part of commissioning.
You can find a description of the solar thermal systems and functions
more towards the beginning of this document.
Installation
is available?
available? The previously selected solar
27