107
Fig. 43
DE1
Digital input 1
DE2
Digital input 2
DE3
Digital input 3
F1
Fuse
0
–
10V 0 to 10 V input
fÖ
Power supply
fÖ
A
Power supply for additional accessories
aBJ
Central fault message/feed pump/DHW circula-
tion pump (potential-free)
aVG
KM-BUS
Digital data inputs DE1 to DE3
The following functions can alternatively be connected:
■
External blocking
■
External blocking with fault message input
■
External demand with minimum flow temperature
■
Fault message input
External contacts must be potential-free. When con-
necting external contacts, observe the requirements of
protection class II: 8.0 mm air and creep path or
2.0 mm insulation thickness to live parts.
Input function assignment
Select the input functions via the following parameters
in the
"General"
group at the boiler control unit:
■
DE1: Parameter "42"
■
DE2: Parameter "43"
■
DE3: Parameter "44"
Analogue input 0
–
10 V
The following functions can be assigned to the 0 to
10 V input via parameter "45" in the
"General"
group:
■
Temperature demand
■
Output demand
Temperature demand
The 0 to 10 V hook-up provides an additional set boiler
water temperature.
Function description
EA1 extension (accessories)
5863679
Functions
Summary of Contents for Vitotronic 11 CC1E
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