3. Prepare Burner
(continued)
Inspect the nozzle adapter before replacing the nozzle. If the
threads have been damaged or show score marks, replace
the nozzle line/adapter assembly.
4. Replace the retention ring assembly by slipping one of the riveted arms
through the gap between the electrode tips. Align this arm straight up,
with the ring clamp firmly against the nozzle adapter shoulder (see
Figure 5). Then tighten the clamping screw.
5. Reposition and check the electrode settings. Position the electrodes
as shown in Figure 5. These settings are critical in ensuring a reliable
ignition. Once the electrodes are set, check all clamps to be sure they
are securely tightened.
6. Insert the combustion head/nozzle assembly in the burner.
the air-band to achieve desired combustion results. The head bar can
be adjusted to additionally optimize combustion (Figure 6). (Note that
pressure overfire will reduce air flow, requiring more air.) The head bar
can be adjusted to additionally optomize combustion (see Fig. 6).
Set initial burner air settings
Combustion head
1. The combustion head adjusting slide controls the spacing between the
retention ring and throttle ring (or air cone), regulating how much air
passes around the retention ring.
2. Loosen the oil line thumb nut and adjusting slide locking screw. Use a
5
⁄
32
" Allen wrench to rotate the adjusting screw until the lead edge of
the slide aligns to the number given in Table 2, page 8. Lock in place
by first tightening the oil line thumb nut, then tightening the locking
screw.
Air shutter
1. The air shutter is fixed for all EZ-66 burners. See page 5 for the correct
air shutter type. (Some EZ-66 burners may be equipped with 3-slot air
shutters.)
Air band
1. The air band is marked in percent opening. Loosen the air band locking
screw and move the air band until the pointer (on shutter) lines up with
the percent opening given in Table 2, page 8.
Final adjustments
1. The burner is now adjusted to the approximate air settings for the
firing rate chosen. When you check combustion with instruments dur-
ing start-up or servicing, you may have to make slight adjustments to
Figure 5 Combustion head/nozzle/electrode settings
Figure 6 Head bar/air band adjustment
Head position indicator (dimension “A”)
5/16" Locking nut
Adjusting head positioning bar
Thumb nut
Air shutter (shown with blank shutter)
Air band and position indicator scale
Air band locking screw
Adjusting
screw
5/16" hex
Fuel Pump Operation
The included Fuel Pump features two adjustable pumps settings for
pressure. Low Fire is the light off point, adjustable to field conditions
(via low fire pressure adjusting screw). Using a timer, the pump will then
transition to high fire after 2 seconds (see included burner supplement
for pressure settings)
L.F.
SOLENOID
H.F.
SOLENOID
L.F. PRESSURE
ADJUSTMENT SCREW
H.F. PRESSURE
ADJUSTMENT SCREW
MN66-3P 090721
– 7 –
Carlin Select EZ-66 Oil/Bio Fuel Burner Instruction Manual
