Additional Accessories; Cleaning; Installation; Installation Of Temperature Sensor On The Low Loss Header - Bosch Thermotechnology MC 400 Notice D'installation

Installation

Specification
Fuse
BUS interface
Power consumption – Standby
Max. power output
Max. power output per connection
• PC0, PC1
• A0, IA1
Measuring range for the flow and return
temperature sensors
• Lower fault limit
• Display range
• Upper fault limit
Measuring range of outside
temperature sensor
• Lower fault limit
• Display range
• Upper fault limit
Permitted ambient temperature
IP rating
Protection class
ID no.
Temperature for the ball pressure test
Pollution degree
Table 3
2.7

Additional accessories

For detailed information about suitable accessories, refer to the
catalogue or Internet page of the manufacturer.
• Control unit: weather-compensated controller with outside
temperature sensor or room temperature-dependent controller;
connect to BUS (do not connect to BUS1, BUS2, BUS3 or BUS4);
connect outside temperature sensor to T1
• Flow temperature sensor; connect to T0
• Outside temperature sensor; connect to T1
• Return temperature sensor; connect to T2
• Cascade pump; connect to PC0
• Heating pump; connect to PC1
• Switch for maximum performance; connect to I2
• Stop switch; connect to I3
• IGM for heat source without EMS, EMS 2 or EMS plus; connect in
accordance with the technical documentation for the IGM (the
MC 400 cascade module replaces the ICM)
Installation of additional accessories
▶ Install the additional accessories in accordance with legal regulations
and the instructions supplied.
2.8

Cleaning

▶ If required, wipe the enclosure with a damp cloth. Never use
aggressive or acidic cleaning agents for this.
18
230 V, 5 AT
EMS 2/EMS plus
< 1 W
1100 W
• 400 W (high-efficiency pumps
permissible; max. 40 A/s)
• 10 W
• < – 10 °C
• 0 ... 100 °C
• > 125 °C
• < – 35 °C
• – 30 ... 50 °C
• > 125 °C
0 ... 60 °C
IP 44
I
Data plate ( Fig. 82 at the end of
document)
75 °C
2
3 Installation
DANGER:
Danger to life due to current!
Touching live parts can result in 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 cover ( Fig. 81 at end of document).
3.1 Installation
▶ Install the module on a wall, ( Fig. 66 to Fig. 68 at end of
document), on a mounting rail ( Fig. 69) or in an assembly.
▶ When removing the module from the mounting rail, refer to Fig. 70 at
the end of the document.
3.2 Installation of temperature sensor on the low loss
header
Position of flow temperature sensor (T0):
A
T0
ϑ ϑ
1
1 2
ϑ ϑ
2 4
Fig. 12 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 
is detected on the side of all heat sources
3
[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
T0
3
ϑ
1
2
1
ϑ ϑ
2 4
0 010 013 230-001
MC 400 – 6720890243 (2018/12)
ϑ
3