27
Potential-free safety chain
Note
A jumper from the external conductor to the control
voltage in the burner may have to be removed.
Always observe
the burner manufacturer's details.
A
a
B
C
D
E
F
G
H
K
L
Fig. 21
A
Control unit
B
Main contactor (on site)
C
Three-phase burner
D
Three-phase burner power supply
E
Main contactor switching
F
Safety chain (high limit safety cut-out), potential-
free
G
Control chain stage 1/base load
H
Burner fault message
K
Hours run meter stage 1
L
Base load/full load
fÖ
Control unit power supply
fA
Burner, stage 1
lÖ
Burner, stage 2
aBÖ
Plug for external connections
a
External safety equipment; remove jumper
when connecting.
aBA
Safety chain, potential-free,
remove jumper when connecting
Electrical connections
Connecting a three-phase burner
5863679
Installation
Содержание Vitotronic 11 CC1E
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