28141 Rev A 10-27-06
15
A.2 BURNER ELECTRODES
Adjustment of the electrode tips with respect to
each other, the nozzle, and to the rest of the
burner is very important to ensure smooth start
ups and to permit efficient combustion. Refer to
the Burner Manufacturers Instructions for details.
A.3 START UP
The furnace should be operated for a minimum of
15 minutes to reach steady state conditions before
fine tuning combustion. The warm up time is ideal
for testing the oil pump pressure.
Drill a 1/4 inch test port in the venting between the
furnace flue outlet and draft regulator (barometric
damper). Insert a stack thermometer and note the
flue gas temperature. The flue gases should be
within a range of 350°F to 575°F. If the flue gases
are below the range, it may be necessary to slow
down the blower fan. If the flue gases are above
the range, the blower fan may require speeding
up. Stack temperature varies directly with the
system temperature rise. System temperature rise
is the difference between the furnace outlet
temperature and furnace inlet temperature as
measured in the vicinity of the connection between
the plenum take-offs and the trunk ducts. Typical
temperature rise values range between 65°F and
85°F.
Perform a smoke spot test. The smoke spot should
not exceed No. 1 on the Bacharach Scale.
After the air adjustments have been completed, re-
check the draft pressure at the same point as the
smoke spot test. The over fire draft should be
adjusted to 0.02 inches w.c.
In the United States, the Beckett AF Burner may
be equipped with Beckett's "
Inlet Air Shut-Off
" to
increase efficiency. (Beckett Part No. AF/A 5861).
NOTE: USE OF THE INLET AIR SHUT-OFF
COULD CAUSE POST COMBUSTION
NOZZLE DRIP.
A.4 SPECIAL INSTRUCTIONS FOR UNITS
EQUIPPED WITH RIELLO BURNERS
Riello burners are factory set with respect to pump
pressure, air gate and turbulator adjustments,
each model and firing rate must be adjusted
accordingly, see Appendix A, Tables A-4 to A-6
.
Consult the Riello Installation Instructions supplied
with the furnace documents envelope for specific
information concerning burner adjustments,
operation, and trouble-shooting.
Summary of Contents for BCL
Page 23: ...28141 Rev A 10 27 06 23 TABLE B 1 BECKETT AND RIELLO CHIMNEY VENTED WIRING DIAGRAM BCL S BFL ...
Page 24: ...28141 Rev A 10 27 06 24 TABLE B 2 BECKETT AND RIELLO DIRECT VENT WIRING DIAGRAM BCL S BFL ...
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Page 41: ...28141 Rev A 10 27 06 NOTES ...
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