Viessmann Vitocrossal 300 CA3 2.5 Installation And Service Instructions Manual page 110

Service
Air Pressure Switches
110
(continued)
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Compensation lines (for CA3 2.5 and 3.0)
Replacement lines must be cut to length. See following table
for required length.
Line Burner model 1.25/1.5 MMBTU
7 in. (mm)
a (6)
1
a (6)
2
a (6)
3
d (4)
4
a (6)
5
d (4)
6
d (4)
7
a (6)
8
a (6)
9
Compensation lines (for CA3 3.5, 4.0, 5.0 and 6.0)
Replacement lines must be cut to length. See following table
for required length.
Line Burner model 1.5/2.0 MMBTU
7 in. (mm)
a (6)
A
d (4)
B
d (4)
C
d (4)
D
d (4)
E
d (4)
F
a (6)
G
Length in. (mm)
8f (220)
1 (48)
2 (72)
8a (209)
19a (490)
12 (326)
11 (302)
10 (255)
21 (533)
Legend
A Gas train
B Air pressure switch 1
C Air pressure switch 2
D Solenoid valve
E Venturi mixing pipe
F Burner frame
G Gas feed nozzles
Length in. (mm)
7 (200)
6/9 (150/230)
1e (35)
10f (270)
15/17 (380/430)
15/13c (380/350)
13c (350)