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3. It is also recommended that the upper rear screw hold
ing the blower housing to the blower deck be removed
before installation in a closet. Removing this screw al
lows for easy service and removal of the blower as
sembly in a closet installation.
Adjustments
Neither the nozzle setting nor the air adjustments are fac
tory set. The furnace is fire-tested and the limit control is
checked to make sure it functions properly; no factory set
tings are made. During installation, the furnace must be
adjusted to ensure proper operation. The installing dealer/
contractor must have and use proper test equipment in or
der to correctly adjust the oil furnace. The use of test equip
ment is more critical than ever due to tighter tolerances
needed to keep the furnace operating efficiently.
Among the test equipment for an oil furnace, the proper
combustion test kit should contain the following:
Draft gauge
D
CO
or O
analyzer
D
2
2
D
Smoke tester
Pressure gauge
D
High temperature thermometer
D
Oil vacuum gauge
D
Beckett T-501 or Z-2000 nozzle gauge
D
Knowledge of proper test equipment operation
D
CAUTION
Improper nozzle and/or air adjustment of this unit
may result in sooting problems. Refer to the follow
ing section for correct adjustment procedures.
Nozzle Adjustment
Proper adjustment of the nozzle assembly is critical. Be
fore the flue pipe and oil lines are installed, the nozzle as
sembly must be checked for proper depth and alignment.
You must remove the entire burner assembly (not just the
nozzle) from the furnace to check the nozzle depth and
alignment. The smaller sized firing nozzle has been facto
ry-installed. This should be verified by the installer. A larger
nozzle has been provided in the bag assembly for use with
ELO183DH114 and 150 units. Inspect the spark trans
former leads also to ensure they are still attached to the
electrodes.
The burner assembly is attached to the vestibule panel by
three nuts. Slots are provided in the mounting flange for re
moving the burner assembly from the vestibule. Loosen
the nuts and turn the whole burner assembly clockwise
(figure 5) to remove the entire burner assembly from the
furnace. There is adequate wire to remove the burner with
out disconnecting wires. Once removed, turn the burner
around in the vest panel area.
ELO183DH Series Burner Removal
First, loosen three nuts which
attach burner to vest panel.
To correctly check and adjust the nozzle depth and align
ment, use the Beckett T-501 or Z-2000 gauge.
To check the oil nozzle depth, insert the small end of the
gauge into the end of the cone and measure from the flat of
the end cone to the face of the nozzle. When nozzle depth
is correct, the tip of the nozzle should just touch the end of
the gauge. Refer to the illustration sheet provided with the
gauge. Note that the scale side of the gauge is not used for
this purpose. If necessary, loosen the escutcheon plate
securing screw and slide the entire nozzle assembly for
ward or backward within the air tube (figure 6). Re-secure
escutcheon plate screw when adjustment is completed.
To check nozzle alignment, again insert the small end of
gauge into the end cone and measure the nozzle and elec
trode alignment against the center lines marked on the
gauge (again refer to enclosed illustration sheet). If the
nozzle is not centered, but found to be too far left or right, a
new nozzle assembly will need to be ordered. Do not at
tempt to adjust by bending the 90 degree elbow in the oil
line.
Take care to properly re-install burner assembly when
nozzle adjustment has been completed.
Beckett Oil Burner Nozzle Adjustment
Burner must be removed from
furnace for this procedure.
T-501 Gauge
To Adjust Nozzle
1-Loosen escutcheon plate screw.
2-Slide entire nozzle/electrode assembly back and forth inside air
tube until nozzle just touches gauge.
Page 8
Next, rotate burner clockwise
on slots then pull toward you.
Figure 5
1
Escutcheon Plate
2
Figure 6
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