Operating instructions

128
Components
Components from the parts list (cont.)
Programming unit
Setting the:
H Heating program
H Set values
H Coding
Displaying:
H Temperatures
H Operating conditions
H Faults
Fuses
F1: 6.3 A (slow), 250 V,
max. power loss x 2.5 W,
to protect the actuators, pumps, and
all electronics
F2: 6.3 A (slow), 250 V,
max. power loss x 2.5 W,
to protect the burner
Burner connecting cables
For boilers with
H Pressure−jet oil/gas burners,
connection see page 89.
H Atmospheric burner,
connection see page 91.
Plug aBÖ
For the connection of external safety
equipment, see page 84.
LON communication module
(accessories)
Electronics PCB for data exchange
with additional control units or
Vitocom300.
A communications interruption will
be indicated.
High limit safety cut−out
H Type STB 56.10525.570, make EGO,
DIN STB 10602000
or
EM80VTK/b71 60002843,
make JUMO, DIN STB 82699
or
Type 965.122X6.01A, make T&G,
DINSTB98103
H In the delivered condition
set to 120 ºC, adjustable to
110 and 100 ºC (see page 61)
H Electro−mechanical temperature
switch according to the liquid
expansion principle with lockout
H Intrinsically safe; also lockout in
case of capillary tube leaks or
ambient temperatures below 10 ºC
H Limits the boiler water temperature
to the maximum permissible value
by shutdown and lockout
H Central fixing M10, capillary tube
3600 mm long
probe ∅ 3 mm, 180 mm long
H Electrical test in accordance with
VDE0701 (or local regulations)
H Function test with TEST key
(see page98)
5862730GB