Burner Component Overview; Cm2 Pre-Mix Cylinder Burner 400/500/620/620Tx - Viessmann Vitocrossal 200 CM2 400 Service Instructions Manual

Vitocrossal 200, CM2 400, 500, 620 and 620 TX Service

Burner Component Overview

CM2 pre-mix cylinder burner 400/500/620/620 TX
Legend
A Burner frame
B Air pressure switch 1
C Air pressure switch 2
D Display and programming unit
E Gas valve
F Gas supply pipe
G Gas pressure switch
H Rotary damper with servomotor
(400, 620 and 620 TX only)
I Gas pipe
CM2 Boiler model
a in. (mm)
b in. (mm)
c in. (mm)
d in. (mm)
J Manual shut-off valve
K Venturi mixing pipe
L Gas fan
M Burner gauze assembly
N Ignition electrodes
O Ionization electrode
P Ignition unit
Q Burner control unit
R Mains filter unit with contactor
400
20 (506) 20 (506)
38 5 / (980) 38 5 /
8
26 (661) 26 5 /
21a (540) 20f (525)
500 620
20 (506)
(980)
41c (1060)
8
(675) 26 5 / (675)
8 8
24b (622)
Burner Service
620 TX
20 (506)
41c (1060)
26 5 / (675)
8
24b (622)
33