GZ 2 - GZ 4 / 100 - 1450 kW
Installation-Operation-Maintenance
21
Circuit diagramm GZ 3.1 - GZ 3.3
Fig. 21:
1) Connec
tor as per DIN 4791
LK = luster terminal in the
base of the automatic gas fir-
ing dev
ic
e
Gas ramp block or line
w
ith se
pa
ra
te
pa
rts (w
ith-
out connector)
Working hours 2
Working hours 1
Failure
Item
b2
b3
b4
b5
b6
b8
c1
e2
IS
m1
m2
m3
s1
s2
u1
u2
Indication
On-off-S
w
itch
Saf
et
y t
her
most
at
On-off-the
rmosta
t
On-off-the
rmosta
t
Gas pressure switch
A
ir pressure switch
Motor conta
ctor
Bimet
allic r
elais
In
fra
-re
d fl
ic
ke
r de
te
ctor
Motor with condenser
Igni
tion tra
nsforme
r
Se
rvomotor
Solenoid valve , t
w
o-
st
age
(sta
ge 1 and 2)
Saf
et
y solenoid valve
Ga
s burne
r a
utoma
tic sa
fe
ty
control
Leakage t
est
er
Observe local and VDE-regulations.
Connections to earth potential be-
ing
execut
ed car
ef
ully.
