Testing The High Limit Safety Cut-Out - Viessmann Vitotronic 200 Installation And Service Instructions For Contractors

Commissioning
Adjusting the heating curve
Standard set room temperature
110
26 °C
A
20 °C
C
-20
B
D
E
Fig. 39 Adjusting the standard set room temperature
from 20 to 26 °C
Boiler water temperature or flow temperature in °C
A
Outside temperature in °C
B
C Set room temperature in °C
Heating circuit pump off
D
Heating circuit pump on
E
Changing the standard set room temperature
Operating instructions
Changing the slope and level
Individually adjustable for each heating circuit.
110
3.4
A
+20 -20
Outside temperature in °C
Fig. 41
Changing the slope
A
Changing the level (vertical parallel offset of the
B
heating curve)

Testing the high limit safety cut-out

The minimum circulation volume should be 10 % of the
circulation volume at rated load.
Reduce the heat consumption as far as possible.
46
(cont.)
1.4
B
0.2
Reduced set room temperature
110
A
14 °C
3 °C
C
B -20
D
E
Fig. 40 Adjustment of reduced set room temperature
from 3 to 14 °C
Boiler water temperature or flow temperature in °C
A
Outside temperature in °C
B
C Set room temperature in °C
Heating circuit pump off
D
Heating circuit pump on
E
Changing the reduced set room temperature
Operating instructions
Tap the following buttons:
1.
2. "Heating"
3. "Heating circuit 1", "Heating circuit 2" or "Heat-
ing circuit 3" as the required heating circuit
4. "Heating curve"
5. Or for the required value for "Slope" or
"Level"
6. to confirm
1. – keep depressed until the burner shuts
down:
The temperature controller " " is bridged. When
the boiler water temperature reaches the safety
temperature, the high limit safety cut-out switches
the burner off.