U.S. Boiler Company LE Series, Инструкция по установке, эксплуатации и обслуживанию, Страница: 29 / 60

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VIII. SYSTEM START-UP (continued)
F.
START OIL BURNER.
1. Open vent fitting on fuel pump.
2. PRESS RED RESET BUTTON on primary control,
hold for one (1) second and release to reset primary
control.
3. TURN ‘ON’ BURNER service switch and allow
burner to run until oil flows from vent fitting in a
SOLID stream without air bubbles for approximate-
ly 10 seconds.
NOTE: For Primary Control "Pump Priming
Cycle" details, see Paragraph I, No. 2., Step a., Item
ii .
4. Close vent fitting and burner flame should start
immediately after prepurge is completed. Prepurge
prevents burner flame until 15 seconds has elapsed
after initial power is applied to burner. During
prepurge the motor and igniter will operate but the
oil valve will remain closed. Refer to Oil Primary
Control Instructions for more details.
5. Adjust oil pressure.
a. When checking a fuel unit's operating pressure, a
reliable pressure gauge may be installed in either
the bleeder port or the nozzle port. For Beckett
burner refer to Figure 21. Refer to Figure 20 for
Riello burner.
b. Locate oil pressure adjusting screw and turn
screw to obtain proper pump pressure, refer to
Tables 5 and 6.
c. To check the cut-off pressure, deadhead a
reliable pressure gauge onto the copper connec-
tor tube attached to the nozzle port. Run the
burner for a short period of time. Shut the burner
off. The pressure should drop and hold.
d. Turn "OFF" the burner. Remove the pressure
gauge and install port/bleeder plug and/or
reconnect the nozzle port line and tighten. Start
the burner again.
G.
ADJUST OIL BURNER WHILE OPERATING.
(flame present)
1. ADJUST DRAFT REGULATOR for a draft of
zero to maximum of -.03" (water gauge) in the
breeching after chimney has reached operating
temperature and while burner is running. Burner
will operate with a positive draft over fire and zero
draft in the breeching. Adjust Draft Regulator such
that maximum draft of -.03" is reached in coldest
weather.
2. READJUST THE AIR DAMPER SETTING (Air
Band/Air Shutter/Air Gate) on burner for a light
orange colored flame while the draft in the breech is
zero to -.03" water column (water gauge). Use a
smoke tester and adjust air for minimum smoke (not
to exceed #1) with a minimum of excess air. Make
final check using suitable instrumentation to obtain a
CO
2
of 11.5 to 13.5% with draft of zero to -.03"
water column in the breeching. These settings will
assure a safe and efficient operating condition. If
the flame appears stringy instead of a solid fire, try
another nozzle of the same type. Flame should be
solid and compact. After all adjustments are made
recheck for a draft of zero to maximum of -.03"
water column in the breeching.
NOTE : Paragraph G, Step 1 MUST BE repeated
every time the Air Damper Setting is readjusted.
3. ONLY READJUST THE HEAD / TURBULATOR
SETTING, if necessary.
Beckett AFG Burners
a. Beckett MB(L1) Head burner has a fixed head
which is non-adjustable.
Riello 40 Series Burners
a. Move the turbulator setting forward or back one
position at a time to optimize the smoke and CO
2
readings. See Figure 19.
NOTE: Step outlined in Paragraph G, Steps 1 and 2
above MUST BE repeated every time the Head/
Turbulator or air Damper Setting is readjusted.
WARNING
DO NOT loosen or remove any oil line fittings
while burner is operating.
Figure 21: Adjusting Fuel Pump Pressure