Connecting The Control Unit To The Lon System (Only For Weather-Compensated Control Units) - Viessmann VITODENS 200-W Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
5. Adjust the set day temperature with
rotary selector "ts".
The value will be automatically accep-
ted after approx. 2 s.
Accordingly, the heating curve is
adjusted along set room temperature
axis C, which results in modified
start/stop characteristics of the heat-
ing circuit pumps if heating circuit
pump logic function is active.
Reduced room temperature
90
A
C
D
Example 2: Adjustment of reduced room
temperature from 5 °C to 14 °C
A Boiler water temperature or flow
temperature in °C
B Outside temperature in °C
Connecting the control unit to the LON system (only for weather-
compensated control units)
The LON communication module
(accessories) must be plugged in.
Installation instructions
LON communication module
34
-20
B
E
(cont.)
C Set room temperature in °C
D Heating circuit pump "OFF"
E Heating circuit pump "ON"
Press the following keys:
1. a "1r" flashes.
2. d to select heating circuit A1
(heating circuit without
mixer)
or
3. a "2r" flashes.
4. d to select heating circuit with
mixer M2.
5. E Call up the set night temper-
ature.
6. a/b Change the value.
7. d Confirm the value.
Note
The data transfer via LON can take sev-
eral minutes.