86
Effect of the "External blocking" function on the
circulation pumps
The effect on the relevant heating circuit pump is
selected with code d6.
The effect on a circulation pump for cylinder heating is
selected with code 5E.
Effect of the "External demand" function on the
circulation pumps
The effect on the relevant heating circuit pump is
selected with code d7.
The effect on a circulation pump for cylinder heating is
selected with code 5F.
DHW circulation pump runtime for brief operation
The runtime is set in code 3d.
Analogue input 0 - 10 V
The 0 to 10 V hook-up provides an additional set boiler
water temperature:
0 - 1 V ≙ "No specification for set boiler water temper-
ature"
1 V ≙ Set value 10 °C
10 V ≙ Set value 100 °C
Output
aBJ
One of the following functions can be connected to
output
aBJ
:
■
Feed pump to substation
■
DHW circulation pump
■
Fault message facility
Note on DHW circulation pumps
Connect DHW circulation pumps with standalone func-
tions directly to the 230 V
∼
supply.
Function assignment
The function of output
aBJ
is selected at the boiler
control unit via code 36.
Control functions
External operating program changeover
The "External operating program changeover" function
is implemented via the EA1 extension. There are 3
inputs available at the EA1 extension (DE1 to DE3).
The function is selected via the following codes:
Operating program changeover Code
Input DE1 3A:1
Input DE2 3b:1
Input DE3 3C:1
The heating program changeover function for the
respective heating circuit is assigned at the boiler con-
trol unit via code d8:
Operating program changeover Code
Changeover via input DE1 d8:1
Changeover via input DE2 d8:2
Changeover via input DE3 d8:3
You can select which direction the operating program
changeover takes in coding address "d5":
Operating program changeover Code
Changeover towards "Permanently reduced" or "Permanent standby mode" (ac-
cording to the selected set value)
d5:0
Changeover towards "Continuous heating mode" d5:1
Function description
External extension (accessories) (cont.)
5839829
Functions
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