28
Safety chain not potential-free
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
Fig. 22
A
Control unit
B
Main contactor (on site)
C
Three-phase burner
D
Three-phase burner power supply
E
Main contactor switching
F
Control chain stage 1/base load
G
Burner fault message
H
Hours run meter stage 1
K
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 (STB)
Electrical connections
Connecting a three-phase burner
(cont.)
5863679
Installation
Summary of Contents for Vitotronic 11 CC1E
Page 118: ...118 5863679...
Page 119: ...119 5863679...