Installation and Operation Manual -
ODF, ODR, OUF, OLF & OLR Series
11
Burner Start-Up
1.
Open all shutoff valves in the oil supply line to the
furnace.
2.
Turn on electrical power to the furnace.
3.
Set the room thermostat to call for heat. If the burner
does not start immediately, check the manual overload
switch on the motor (if applicable), and the safety switch
of the furnace primary control.
4.
While the ignition is on, press and release the reset
button (hold 1/2 second or less). If the control has not
locked out since its most recent complete heat cycle,
the lockout time will be extended to 4 minutes, and the
ignition will remain on for the entire heat cycle.
5.
Bleed the pump until all froth and bubbles are purged.
The bleed port is located on the bottom of the fuel pump.
To bleed, attach a clear plastic hose over the vent plug.
Loosen the plug and catch the oil in an empty container.
Tighten the plug when all the air if purged.
NOTE:
Bleeding might not be necessary with a two-pipe system.
6.
If prime is not established within the extended lockout
time, the control will lock out. Press the reset button to
reset the control (see Step 4).
NOTE:
the reset button
can be held for 15 seconds for the Beckett 7505B
primary control, at any time to reset the control’s lockout
counter to zero and send the control to standby.
7.
Repeat Steps 4 and 5, if needed, until pump is fully
primed and oil is free of bubbles. Then terminate the
call for heat, and the control will resume normal
operation.
Burner Adjustment
All adjustment to this furnace and its components must
be done by a qualified service technician.
Refer to Table 2 for nozzle and pump pressure information.
The proper way to adjust an oil burner is with a CO
2
analyzer
and a smoke gun. A properly adjusted burner will result in a
quiet, clean fire which will prevent sooting and frequent
cleaning. To establish tolerance or a “window of operation”
into the unit, do not exceed #1 smoke. This will give the
burner more flexibility when there are changes in the
surrounding environment.
To adjust the burner:
1.
Punch a 5/16” diameter service hole in the flue outlet.
This sampling hole should be at least two flue diameters
above the breeching, or elbow at the breeching, but
ahead of the barometric damper.
2.
Operate burner, adjust air setting for good flame by visual
observation, and run for at least 10 minutes or until
operation has stabilized. A good flame will be entirely
contained in the combustion chamber and will be
predominantly yellow-white in color. As flame quality
lessens, the flame will turn more orange in color and
will start to rise above the combustion chamger.
3.
Take a draft reading at the service hole. Adjust
barometric draft control in the stack to achieve and
overfire draft of –.01” to –.02” and a breach of –.02” to
–.04”.
4.
Pull and record a smoke reading at the service hole
using an industry standard smoke tester. If smoke is
evident, it could be caused by a poor nozzle or
combustion setting. In some cases, it may be caused
by difference in oil or an unusual condition of installation.
5.
If the burner is producing more than #1 smoke, loosen
the air control adjustment screw and rotate the band
until the flame appears clean.
6.
Reset the draft if the combustion head or air settings
were adjusted (see Step 3).
7.
Using a suitable test instrument for CO
2
, take and record
a CO
2
reading at the service hole. The CO
2
measured
in the stack should be a minimum of 11% CO
2
.
8.
Using a suitable thermometer, obtain and record the flue
gas temperature at the service hole.
9.
Use the CO
2
reading and the flue gas temperature
reading to determine unit efficiency.
10. When the proper combustion and smoke readings have
been achieved, tighten the air adjustment screw.
11. Recheck the draft, smoke, combustion, and flue gas
temperature.
