12. Adjusting of air flow measurement "B" and measurement "A"
Measurement "B"
The scale serves as assistance for easier ad-
justment of the air flow. With a socket head
wrench (SW 4) the air flow is changed
depending on the output according to the
adjustment index.
With excess pressure in the combustion
chamber the value has to be adjusted higher.
On low pressure the value has to be reduced.
In any case a readjustment is necessary
according to the heater set-up.
In order to reach equal combustion values we
recommend the use of a draught regulator.
Measurement "A"
The measurement "A" (refer adjustment table)
serves as assistance for the burner
adjustment.
Measurement "A" describes the position of the
nozzle plate with baffle plate in the burner
cone.
Example: Right turn of the adjustment screw,
the air flow is increased, the CO² - content in
the exhaust drops and the air pressure in front
of the baffle plate also drops. By measuring
the CO² at the measuring point in the exhaust
pipe the correct setting of measurement "B"
and measurement "A" are checked.
Adjustment marking
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