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Buderus MCM10 Manual

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Details about the MCM10 module
MCM10
63
System version 2:
Modulating 0 - 10 V controller, regulates acc. to
output
In conjunction with a building management system with
0 - 10 V interface, the total output of the cascade can be
selected as a control variable. This setting is made via a
jumper (Æ fig. 4).
Fig. 4 Setting via jumper
VT Flow temperature
P Output in % of rated cascade output
Fig. 5 Correlation between input voltage and output
P Output in % of rated cascade output
U Input voltage
System version 3:
Modulating 0 - 10 V controller, regulates to flow
temperature
In conjunction with a building management system with
0 - 10 V interface, the flow temperature can be selected
as a control variable. This setting is made via a jumper
(Æ fig. 4).
Fig. 6 Correlation between input voltage and flow
temperature
VT Flow temperature
U Input voltage
System version 4:
Heating control with ON/OFF contact
In conjunction with a control unit with ON/OFF contact,
the MCM10 module regulates the cascade output in
accordance with the contact closure respectively up to
maximum output, by starting one boiler after another.
When the contact opens all boilers are shut down
simultaneously.
The ON/OFF contact of the heating controller must be
zero volt.
2.7.8 Connection of additional modules in case of
heating controllers with 2-wire BUS control
Any other modules that may be installed, such as WM10
and MM10 modules (Æ fig. 3, [21], page 59), must be
connected to the heating controller BUS (parallel to
terminal J on the MCM10 module).
To prevent contact problems at the terminals of the
MCM10 master module, we recommend the use of a
junction box (Æ fig. 3, [20], page 59).
7 746 800 090-13.1O
VT[ C]
P[%]
0246810
6 720 617 648-09.1TD
0
30
50
70
90
U [V DC]
P [%]
90
75
60
45
30
15
0
0246810
7 746 800 090-08.1O
U [V DC]
… 63 …


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