15
30
35
40
45
50
55
60
70
65
75
15
20
25
30
35
40
45
kW
3
4
5
6
3,5
4,5
5,5
kg/h
50
Basic setting values air damper
Firing rate
Air damper setting [°]
Set air damper
ST
0
ST
2
ST
1
MV2-Oel
Z
L
-Gas
Full load
Partial load
Full load (ST2) pre-setting:
Determine air damper setting using the
full load curve
in
the diagram and set full load limit switch (ST2) accordingly.
Partial load (ST1) pre-setting
Determine air damper setting using the
partial load curve
in the diagram and set partial load auxiliary switch (ST1)
accordingly.
Pre-set switch point for the full load solenoid valve
(MV2):
Set the switch point to approx. 1/3 of the setting
movement between ST1 and ST2.
Example air damper setting WL10/2-C, vers. Z
Firing rate (Q
F
)
Full load pump pressure (22 bar):
57·1 kW
Partial load pump pressure (10bar):
38·1 kW
This results in an air damper setting
for full load (ST2) of:
33°
for partial load (ST1) of:
18°
Switch point for the full load solenoid valve (MV2)
33°
(ST2) -
18°
(ST1)
=
5°
3
+ air damper setting partial load (ST1)
18°
= switch point (MV2)
23°
ST0
Limit switch closed
ST2
Limit switch full load
ST1
Auxiliary switch partial load
MV2
Auxiliary switch full load solenoid valve
Set servomotor
30
0
30
30
0
30
0
60
30
30
0
60
30
33
°
0
°
18
°
23
°
60
30
3·5
4·5
5·5
MV2-Oil
