15
Weil-McLain Ultra Oil NX
Burner Manual
Start the Burner and Set
Combustion
Start-up and Initial Settings
Open the shutoff valves in the oil supply line to the
burner.
Referencing Figure 9, verify and/or set the Head/Air
Adjustment Pointer to the value speci
fi
ed by the
Appliance Manufacturer. Refer to Table 1. (
This
is an initial air setting for the pump bleeding
procedure only.)
Calibrated test instruments must
be used for the
fi
nal head/air adjustment.
Adjust the thermostat or temperature controller
to call for heat. (
Note: return controller(s) to
the original settings upon completion of burner
installation or service.)
Close the line voltage switch to start the burner. If
the burner does not start within the 3 to 10 second
safety start check timing, you may have to reset the
safety switch on the burner primary control.
Bleed the air from the fuel pump as soon as the
burner motor begins rotating.
Prepare for combustion tests by drilling a
1/4
”
sampling hole in the
fl
ue pipe between the
appliance and the barometric draft regulator. Seal
this hole when testing is complete. (See appliance
manufacturer’s instructions for location.)
Check/Adjust the Zero Calibration for the Head/Air
Adjustment Mechanism. Refer to Figure 9.
Slightly loosen the zero setting locking nut.
Turn the adjustment screw until the reading is
set to zero. (Mid-point of pointer should line up
with zero.
Turn the adjustment screw counterclockwise
to adjust the plate with the pointer to the zero
position.
1.
2.
3.
4.
5.
6.
7.
a.
b.
c.
Slide the nozzle line assembly forward until the
retention head engages the
fi
xed stops in the
retention ring at the end of the air tube. Refer to
Figure 10.
Tighten the zero setting locking nut.
The rear door must be closed. The adjustment
screw may now be turned clockwise to adjust
the head/air setting.
Turn the adjusting screw to a setting 1/2 number
lower than the proper setpoint as indicated
in Table 1. Then turn the adjusting screw
counterclockwise to the proper setting.
Tighten the locking nut after the head/air setting
has been adjusted.
Set Combustion with Test Instruments
d.
e.
f.
g.
h.
Pointer
Zero Setting
Locking Nut
Adjustment
Screw
Am52000
Figure 9. Head/air Adjustment Plate Assembly
Do not attempt to start the burner when excess oil
has accumulated in the appliance, the appliance is
full of vapor, or when the combustion chamber is
very hot.
Do not attempt to re-establish
fl
ame with the burner
running if the
fl
ame becomes extinguished during
start-up, venting, or adjustment.
Vapor-Filled Appliance:
Allow the unit to cool off
and all vapors to dissipate before attempting another
start.
Oil-Flooded Appliance:
Shut off the electrical
power and the oil supply to the burner and then clear
all accumulated oil before continuing.
If the condition still appears unsafe, contact the Fire
Department. Carefully follow their directions.
Keep a
fi
re extinguisher nearby and ready for use.
y
y
y
y
y
y
Failure to follow these instructions could
lead to equipment malfunction and result
in heavy smoke emission, soot-up, hot
gas puff-back, fi re and asphyxiation
hazards.
Explosion and Fire Hazard
Oil-Burning Equipment
shall be connected to fl ues
having suffi cient draft at all times to assure
safe and proper operation of the burner.
Section: Start the Burner and Set Combustion
Summary of Contents for UO-3 CV
Page 2: ...2...
