Viessmann VITOCROSSAL 200 Technical Data Manual page 11

Vitocrossal 200 CM2 186, 246, 311 Technical Data
Cylinder Radiant Burner
CM2 pre-mix cylinder burner 186/246/311
Legend
A Boiler door
B Air pressure switch 1
C Fan
D Burner display and programming unit
E Gas valve with gas pressure switch
F Gas supply pipe
G Burner test firing valve
H Cylinder burner assembly
I Ignition electrodes
Note: Solenoid valve (choke valve) for CM2 model 186
(not shown).
(continued)
J Ionization electrode
K Gas pipe
L AC-EMI suppresion filter device
M Ignition unit
N Thermal insulation block
O Manual shut-off valve
P Venturi mixing pipe
Q Air pressure switch 2
R Burner control sub-base
S Servomotor and burner inlet damper (for models 246 / 311)
Specifications
11