Daikin DBG Series Service Instructions Manual page 21

SCHEDULED MAINTENANCE
Inspection & Cleaning
All flue product carrying areas of the furnace, its vent system,
and main burners should be examined by a qualified service
agency before the start of each heating season. This exam-
ination is necessary for continued safe operation. Particular
attention should be given to deterioration from corrosion or
other sources. This examination is accomplished in the fol-
lowing manner.
1. Disconnect power to the unit and remove furnace section
access panel.
2. Remove burner assembly:
a. Disconnect the three wires from the gas valve after
noting which wires are connected to each terminal.
b. Disconnect wires from the flame rod and ignition elec-
trode.
c. Disconnect the gas piping at the union.
d. The entire burner assembly can now be removed from
the unit.
NOTE: Use all screws that were removed; they are
necessary for safe and proper operation of the unit.
3. Inspect and periodically clean the vent outlet (bird screen)
on the access panel.
NOTE: Periodic observation of the flame and a log of
C0 measurements are recommended. This will aid in
2
determining whether the furnace is operating efficiently or if
the furnace requires cleaning.
Flames should be stable, soft and blue (dust may cause orange
tips but must not be yellow). The flames must extend directly
outward from the burner without curling, floating or lifting off.
Burner Flame
T
O AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRIC SHOCK
NOT REMOVE ANY INTERNAL COMPARTMENT COVERS OR ATTEMPT ANY
. C
ADJUSTMENT ONTACT A QUALIFIED SERVICER AT ONCE IF AN
ABNORMAL FLAME SHOULD DEVELOP
At least once a year, prior to or during the heating season,
make a visual check of the burner flames.
WARNING
.
NOTE: This will involve removing and reinstalling the heat
exchanger door on the unit, which is held by two screws.
If you are uncertain about your ability to do this, contact a
qualified servicer.
If a strong wind is blowing, it may alter the airflow pattern
within the unit enough that an inspection of the burner flames
is not possible.
Functional Parts
Refer to the unit Parts Catalog for a list of functional parts.
Parts are available from your distributor.
,
DO
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