Dunkirk Excelsior EXB Series - Manual (Page 42)

42
16.9 Oil Burner - Beckett AFG
NOTICE
Instructions are for Beckett AFG with Beckett
Genisys primary control. For other burners, refer to
manufacturer’s manual.
Nozzle and air settings are given in Table 14 page
50.
For direct vent installation guide, see Direct Vent
Addendum.
1. Prepare Oil Burner Before Starting. (AFG)
A. Check burner air band, air shutter and head setting
(if equipped), readjust if necessary. See “17 - Oil
Burner, Nozzle, & Air Settings” on page 46.
B. Open all oil line valves.
C. Attach a plastic hose to fuel pump vent fitting and
provide a pan to catch the oil.
2. Prime Pump and Start Oil Burner
A. Open bleed port fitting on fuel pump.
B. Initiate a call for heat
I. After burner starts, press and hold reset button for
approximately 15 seconds until yellow light turns on.
Indicates button has been pressed long enough.
II. Release reset button. Yellow light turns off and burner
starts up again.
III. At burner startup, click reset button while igniter is
still on. This transitions control to dedicated pump
priming mode, during which the motor, igniter and
valve are powered for four minutes. Yellow light will
be on.
C. Bleed pump until all froth and bubbles are purged.
I. If desired, terminate call for heat or hold reset button
for at least one second to exit pump priming mode
and return to standby mode.
II. At end of four minutes, yellow light will turn off and
control will automatically return to standby mode.
III. If prime is not established during four minute pump
priming mode, return to step 2.B.III. to re-enter pump
priming mode. Repeat steps 2.C.I. to 2.C.II. until
pump is fully primed and oil is free of bubbles.
D. Terminate call for heat and control will resume normal
operation. Close bleed port fitting on fuel pump.
E. Adjust oil pressure.
I. When checking fuel unit’s operating pressure, reliable
pressure gauge may be installed in either bleeder port
or nozzle port.
II. Initiate call for heat.
III. Locate oil pressure adjusting screw and turn screw
to obtain proper pump pressure, refer to “17 - Oil
Burner, Nozzle, & Air Settings” on page 46.
16 - OPERATING THE BOILER - SYSTEM START-UP
3. Preliminary Oil Burner Adjustments
A. Adjust Draft Regulator for breech draft of -0.05
(preferred) to 0 inches water column after chimney
has reached operating temperature and while burner is
running.
B. Use smoke tester and adjust air if necessary for
minimum smoke (not to exceed trace) with minimum
of excess air. Check using suitable instrumentation to
confirm CO
2
of 11 to 13%. If flame appears stringy
instead of solid fire, try another nozzle of same type.
Flame should be solid and compact.
C. Turn off burner and remove pressure gauge. Install
gauge port/bleeder plug and tighten. Start burner
again.
4. Final Burner Adjustments: Final burner
adjustments must be made using combustion test
instruments.
A. Check draft breech to verify between 0.00” WC and
-0.05” WC, or otherwise adjust draft to -0.05” WC (or
less than zero.)
B. After operating 10 minutes to warm up boiler, use
combustion test equipment to take smoke reading in
flue pipe between boiler and draft regulator. Smoke
reading should be zero to trace (Shell Bacharach
Scale).
C. New boiler may require more than 10 minutes to burn
clean due to oil film on new heat exchanger. If smoke
reading is zero, gradually close burner’s air adjustment
to obtain smoke reading showing trace smoke read-
ing. Once smoke reading is trace, measure CO
2
and
as insurance margin increase air to sufficiently reduce
CO
2
by 1/2% to 1%.
D. If clean fire cannot be obtained, it is necessary to
verify burner head alignment. If fire continues to be
smoky, replace nozzle.
WARNING
Fire, burn, asphyxiation hazard. Do not loosen
or remove any oil line fittings while burner is in
operation. Failure to follow these instructions could
result in death or serious injury.
!
WARNING
Fire, burn, asphyxiation hazard. Do not attempt
to start burner when oil has accumulated in
combustion chamber or unit is full of vapor, or
hot. Check operation of all boiler controls before
installation of boiler is completed. Failure to follow
these instructions could result in death or serious
injury.
!