Commissioning; Testing The High Limit Safety Cut-Out - Viessmann VITOTRONIC 100 Installation And Service Instructions Manual

Testing the high limit safety cut-out

N
13 14 15 16 17 18
S
C Terminal strip inside the control
unit
S Jumper
C
1. Shut down the heating system.
2. Insert jumper across control unit ter-
minals 15 and 16.
3. Switch on the heating system.
The temperature controller
bridged. The high limit safety cut-out
shuts the burner down if the boiler
water temperature reaches the safety
temperature.
4. Shut down the heating system.
5. Remove jumper.
6. Switch on the heating system.
7. Wait until the boiler water tempera-
ture has dropped approx. 15 to 20 K
below the set safety temperature.
8. Reset the high limit safety cut-out
using a suitable tool (reset button
see page 11).

Commissioning

is
23