Weishaupt W-FM 100 Installation And Operating Instruction page 167

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83054802 1/2018-07 La
Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
3. Check mixing pressure in ignition position
Select ProgramStop.
Select 36 IgnPos.
Use [esc] key to return to the display with OilSettings.
Select Autom/Manual/Off.
Select Manual (Burner On).
The burner starts and stops in ignition position without flame formation
Check rotation direction of fan wheel.
Check mixing pressure in ignition position, see installation and operating manual
of burner.
Standard: 2.5 ... 5.0 mbar above combustion chamber pressure
3LN (multiflam): 4.0 ... 8.0 mbar above combustion chamber pressure
If necessary, adjust mixing pressure via air damper setting:
Select OilSettings
Select SpecialPositions.
Select IgnitionPos.
Select IgnitionPosGas and adjust.
Use [esc] key to return to the display IgnitionPos.
4. Check pump pressure
The pump pressure in ignition position must be approx. 1 ... 4 bar less than that of
the full load pressure, see burner data sheet.
On light oil burners with magnetic coupling between burner motor and oil pump or
with separate oil pump, the pump pressure can only be set in the next step during
ignition.
Check pump pressure at pressure gauge.
Remove closing cap 1 (types T and TA only).
Undo locknut 2 (types T and TA only).
Set pump pressure using pressure regulating screw 3.
increase pressure: clockwise rotation,
decrease pressure: anticlockwise rotation.
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5. Ignition
Set Program stop to 44 Interv 1.
The burner ignites and the actuators stop in the ignition position.
Check combustion values in ignition position.
Set O content of approx. 5 % by positioning the oil quantity regulator (Igni-
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tionPosOil) whilst observing the return pressure:
Fuel oil EL: min 8 bar
Heavy oil: min 12 bar
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