Viessmann Vitocrossal 200 Service Instructions For Contractors page 48

Component overview
Overview of burner components
Pressure-jet gas burner, type VMA III, 87 kW
A
B
C
D
E
F
G
H
K
Fig. 51
Boiler door
A
Fan
B
Display and programming unit
C
Gas supply pipe
D
Gas shut-off valve
E
Burner gauze assembly
F
Ignition electrodes
G
Ionisation electrode
H
Thermal insulation block
K
48
U
T
S
R
Q
P
N
C
M
L
D
E
Burner control unit
L
Ignition unit
M
Inlet adaptor for room sealed operation (optional)
N
Gas pressure switch
P
Gas train
Q
Venturi mixing pipe
R
Air pressure switch 1
S
Choke valve
T
Air pressure switch 2
U