Installation and operating instruction
Oil burner WL20/2-C Z
7 Commissioning
83307702 1/2019-04 La
36-80
2. Adjust stage 2
Heat demand required for stage 2 (contact T6/T8 closed).
Plug in 4 pole connection plug.
Burner drives to stage 2.
Exit this stage, if the air damper setting has to be adjusted. The air damper setting
for stage 2 must be adjusted in stage 1.
Check combustion values
Determine combustion limit [ch. 7.4].
Set excess air using air damper setting limit switch ST2 and diffuser setting
whilst observing the mixing pressure determined [ch. 7.1.2].
3. Adjust stage 1
Exit this stage, if the air damper setting has to be adjusted. The air damper setting
for stage 1 must be adjusted in stage 2.
Unplug 4 pole connection plug.
Burner drives to stage 1.
Check combustion values
Determine combustion limit [ch. 7.4].
Set excess air using air damper setting limit switch ST1 whilst observing the mix-
ing pressure determined [ch. 7.1.2].
If the diffuser setting is adjusted, stage 2 excess air has to be re-adjusted.
4. Adjust stage 2 switch point
Set the switch point MV2-Oil to approx.
1
/
3
of the setting movement between
ST1 and ST2.
MV2-Oil = (ST2 - ST1) x 0.33 + ST1
5. Check start behaviour and switch point
Switch off burner.
Plug in 4 pole connection plug.
Re-start the burner.
Check start behaviour.
Check stage 2 switch:
excess air phase (CO content) prior to switch over must not be too long,
flame must not fail.
If necessary correct settings.
If the existing settings have been changed:
Re-check start behaviour and switch point.
