42
103536-13 - 2/24
MegaSteam
Installation & Service Manual
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. See Figure 8-1.
b. Locate oil pressure adjusting screw and
turn screw to obtain proper pump pressure,
refer to table at rear of manual.
c. To check the cut-off pressure, deadhead
a reliable pressure gauge onto the copper
connector 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. Remove the gauge and install bleeder port
and/or reconnect the nozzle port line.
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 inches water column ("w.c.) in the
canopy. Replace plug at completion.
See table at rear of this manual for details
regarding the overfire pressure when baffles
are both installed and removed.
3. READJUST THE HEAD SETTING.
It might be necessary to move the head forward or
back one position at a time to optimize the smoke
and CO
2
readings. Refer to Burner Manufacturer's
Manual for details.
4. TURN “OFF” BURNER and remove pressure
gauge. Install gauge port/bleeder plug and
tighten. Start burner again.
WARNING
Do not loosen or remove any oil line fittings while
burner is operating.
5. FLAME FAILURE
The MegaSteam™ boiler controls operate the
burner automatically. If for unknown reasons
the burner ceases to fire and the reset button
on the primary control has tripped, the burner
has experienced ignition failure.
WARNING
Do not attempt to start the burner when excess
oil has accumulated, when the boiler is full of
vapor, or when the combustion chamber is very
hot.
H. CHECK FOR CLEAN CUT OFF OF BURNER.
1. AIR IN THE OIL LINE between fuel unit and
nozzle will compress when burner is on and
will expand when burner stops, causing oil
to squirt from nozzle at low pressure as the
burner slows down and causing nozzle to drip
after burner stops. Usually, cycling the burner
operation about 5 to 10 times will eliminate air
from the oil line.
2. IF NOZZLE CONTINUES TO DRIP, repeat
Paragraph H, No. 1. If this does not stop the
dripping, remove cut-off valve and seat, and
wipe both with a clean cloth until clean, then
replace and readjust oil pressure. If dripping or
after burn persist replace fuel pump.
Figure 8-1: Adjusting Fuel Pump Pressure
G. ADJUST OIL BURNER WHILE OPERATING.
(flame present)
1. ADJUST DRAFT REGULATOR for a draft
of zero inches (water gauge) in the canopy
(see Figure 6-1) after chimney has reached
operating temperature and while burner is
running. (At least five minutes)
See table at rear of manual for details.
2. READJUST THE AIR SETTING on burner for
a light orange colored flame while the draft in
the canopy is zero inches water column ("w.c.).
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
13.0% with draft of zero inches water column
("w.c.) (water gauge) in canopy. These settings
8
System Start-Up
(continued)
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