Viessmann VITOPLEX 300 Type TX3A - Burner Diagrams (cont.)

b
c
d
g
f
e
h
a
A
Gas shut-off valve
B
Boiler door
Note
The combination valve may be fitted on the r.h. or the l.h. side of the
boiler.
A
Combination valve
B
Quick-action fastener
C
Servomotor
D
Air pressure switch
E
Fan motor
F
Reset button
G
Burner control unit
H
Ignition transformer
K
Mixer assembly
L
Ignition electrode
M
Sensor plate
N
Ionisation electrode
Burner
(cont.)
OIL/GAS BOILERS
VIESMANN
17
5822 426 GB
8