51
Installation and Operating Instructions
G
as burner WG20.../1-C ZM-LN (W-FM 25)
83055116 • 1/2016-05
8 Maintenance and service
8
.5 Setting the ionization and the ignition electrodes
Observe the notes on maintenance and servicing (see Ch. 8.1).
u Remove the mixing head (see Ch. 8.3).
u Loosen screw 1.
u Set the ignition electrode and re-tighten screw 1.
u Loosen screw 2.
u Set the ionization electrode and re-tighten screw 2.
3
/
1
6
”
(
5
m
m
)
3
/
1
6
”
(5
mm)
1
/
1
6
”
.
.
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3
/
3
2
”
(
1
.
5
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.
2
mm)
1
/
1
6
”
.
.
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3
/
3
2
”
(
1
.
5
.
.
.
2
m
m
)
1
2