High Limit Safety Cut-Out - Viessmann Vitotronic 200 Installation And Service Instructions Manual

Components from the parts list
LON communication module
A Control unit or Vitocom 300
B Connecting cable, part no. 7143
495
C Terminator, part no. 7143 497
TEST key
For testing the high limit safety cut-
out. For a description, see page 40.
Plug aBÖ
For the connection of external safety
equipment, see page 26.

High limit safety cut-out

In the delivered condition set to
110 °C; may be changed to 100 °C
Electromechanical temperature
switch according to the liquid
expansion principle with lockout
Intrinsically safe; also lockout in
case of capillary tube leaks or ambi-
ent temperatures below 10 ºC
(cont.)
Plug the module into the control unit.
The communication interruption will
be displayed (see page 64).
Limits the boiler water temperature
to the maximum permissible value
by shutdown and lockout
Central fixing M10, capillary
3600 mm long; sensor 7 3 mm,
180 mm long
Electrical test in accordance with
VDE 0701 (or local regulations)
Function test with TEST key
Components
107