Installation; Preparation For The Installation In The Heat; Source; Installation Locations - Bosch MU 100 Installation Instruction

3

Installation

DANGER:
Danger to life from electric shock!
Touching live electrical parts can cause an electric shock.
▶ Before installing this product: Disconnect the heat source
and all other BUS nodes from the mains voltage across all
poles.
▶ Before commissioning: Mount the cover ( Fig. 20 at end
of document).
3.1

Preparation for the installation in the heat

source

▶ Check by referring to the installation instructions of the
heat source whether it is possible to install modules (e.g.
MU 100) in the heat source.
▶ If the module can be installed in the heat source without a
mounting rail, prepare the module ( Fig. 8 and 9 at end
of document).
3.2

Installation locations

▶ Install the module on a wall, ( Fig. 10 and 11 at end
of document), on a mounting rail ( Fig. 12 at end of
document), in an assembly or in the heat source.
▶ When the module is installed in a heat source,
observe the heat source instructions.
▶ Remove the module from the mounting rail
( Fig. 13 at end of document).
3.3 Installation of a temperature sensor on the
low loss header or downstream of the heat

exchanger

The low loss header temperature sensor T0 should as a priority
be connected to MU 100. In the case of wall-mounted boilers
with EMS 2/EMS plus, the sensor on the appliance can be
connected to the MM 100 or also to the MC 400.
From software version OF02.05 onwards, a low loss header
temperature sensor is sufficient in conjunction with MC 400.
MU 100 – 6721804146 (2019/10)
Installation on the low-loss header
( Fig. 23 and 25 at the end of the document)
Position of flow temperature sensor (T0):
A
T0
ϑ
1
1 2
ϑ ϑ
2
Fig. 3 Position of flow temperature sensor (T0)
[1] all heat sources
[2] all heating circuits
A low loss header model 1
B low loss header model 2

overall flow temperature of all heat sources
1

overall return temperature of all heat sources
2

overall flow temperature of all heating circuits
3

overall return temperature of all heating circuits
4
T0 flow temperature sensor on the low loss header
T0 must be positioned so 
sources [1] independently of the flow rate. This is the only way
also to ensure stable operation of the control with small loads.
To ensure optimum control response, the flow should circulate
around the temperature sensor. This can be achieved by a
combination of tee, tap extension and sensor set.
B
ϑ
3
ϑ
1
1
ϑ
4 2
0 010 013 230-001
is detected on the side of all heat
3
T0
ϑ
3
2
ϑ
4
19