3. Prepare Burner
Removing/installing head assembly
Use care when handling burner components after the burner
has been firing. Components can be hot and could cause
severe personal injury.
You will need to remove the combustion head assembly for inspection of
the assembly, replacement of the oil nozzle or adjustment of electrodes.
To remove the assembly:
1. Loosen, and then rotate the hold down tabs securing the ignitor in place.
Swing the ignitor plate open.
2. See Figure 2. Remove the blower shield by loosening the retaining
screw on its front edge if needed for easier removal or insertion of the
combustion head assembly.
3. Unscrew the oil line fitting and thumb nut at the burner housing.
4. Pull the threaded end of the oil tube into the blower housing.
5. See Figure 2. Before removing, confirm the electrodes are upside down
(electrode insulators on top) for easy removal.
6. Remove the combustion head assembly by pulling the assembly up
and out of the housing.
7. Handle the assembly with care to avoid bending/moving the electrodes,
or damaging the electrode ceramic insulators.
8. Inspect the gasket on the bottom of the ignitor plate. The gasket prevents
air from escaping from the housing. Replace the gasket if not in good
condition.
9. Inspect the ignitor contact clips. Clean or replace if necessary to ensure
reliable contact with the electrodes.
Install nozzle/check electrodes
1. Loosen the clamp screw on the retention ring assembly (see Figure 5,
page 7). Slide the retention ring assembly off of the nozzle adapter.
Then loosen electrodes to rotate out of the way.
2. Install and tighten the nozzle shown in Table 1, page 4, for retrofit
applications. Install the nozzle given in the appliance manual when
application information for the EZ-66 oil burner is given.
3. Hold the nozzle adapter securely when removing or replacing the nozzle
(Figure 4). Take care not to damage the electrode insulators or to bend
the electrodes in the process.
To replace the combustion head assembly, reverse the sequence.
• Remember to put the assembly in upside down, so the electrode
insulators are out of the way. Remove, then replace, the blower shield
if necessary for easier removal/insertion of the assembly.
• Lift the end of the assembly to guide it through the throttle at the end
of the air tube. DO NOT FORCE.
Use care when tightening the oil line fitting to oil tube exten-
sion. Tighten securely. Do not cross-thread or over-tighten.
Figure 3 Inserting combustion head assembly
Figure 2 Removing/inserting combustion head assembly
Figure 4 Carefully support the nozzle adapter when
installing or removing nozzle
Combustion
head
assembly
Confirm electrode insulators
are facing up when inserting
combustion head.
Air
tube
Throttle
ring
MN66-3P 090721
– 6 –
Carlin Select EZ-66 Oil/Bio Fuel Burner Instruction Manual
