Control Functions - Viessmann Vitodens 200-W Service Instructions Manual

Function Description

Control Functions

External heating program changeover
The "External heating program changeover" function is
connected via input "EA1" in the EACB.
You can select which direction the heating program
changeover takes in coding address "D5":
The "External heating program changeover" function is
connected via extension EA1. There are 3 inputs available
at extension EA1 (DE1 to DE3).
The function is selected via the following codes:
Heating program changeover
Input DE1
Input DE2
Input DE3
Assign the heating program changeover function for
the respective heating circuit with code D8 at the boiler
control unit:
Heating program changeover
Changeover via input DE1
Changeover via input DE2
Changeover via input DE3
You can select which direction the heating program
changeover takes in coding address "D5".
Heating program changeover
Changeover towards "Permanently reduced"
or
"Permanent standby" mode (based on the
selected set point)
Changeover towards "Constant heating mode" D5:1
The duration of the heating program changeover can be
adjusted in coding address "F2":
Heating program changeover
No changeover
Duration of the heating program changeover
1 to 12 hours
The heating program changeover stays enabled for as
long as the contact remains closed, but at least as long as
the duration selected in coding address "F2".
84
External blocking
The "External blocking" and "External blocking and fault
message input" functions are connected via extension
EA1. There are 3 inputs available at extension EA1
(DE1 to DE3).
The function is selected via the following codes:
External blocking
Input DE1
Input DE2
Coding
Input DE3
3A:1
3B:1
External blocking and fault message input
3C:1
Input DE1
Input DE2
Input DE3
The effect on the internal circulation pump is selected
with code 3E. Select the effect on the respective heating
Coding
circuit pump with code D6.
D8:1
D8:2
External demand
D8:3 The "External demand" function is connected via
extension EA1. There are 3 inputs available at extension
EA1 (DE1 to DE3).
The function is selected via the following codes:
External demand
Coding
Input DE1
D5:0
Input DE2
Input DE3
The effect on the internal circulation pump is selected
with code 3F. The effect on the respective heating circuit
pump is selected with code D7.
The minimum set boiler water temperature in case of
external demand is selected in coding address "9B".
Coding
Venting program
F2:0
During the venting program, the circulation pump will
F2:1 to
be alternately switched on and off for 30 seconds
F2:12
respectively over a period of 20 minutes.
The burner is switched off during the venting program.
Activate venting program: See "Venting the heating
system".
Vitodens 200-W B2HA 80, 100 Service
Coding
3A:3
3B:3
3C:3
Coding
3A:4
3B:4
3C:4
Coding
3A:2
3B:2
3C:2