CHANGING FROM UPFLOW TO HORIZONTAL
1. Remove burner from unit by removing 3 burner mounting
nuts. Prevent putting undue strain on burner wiring. It may
be necessary to disconnect burner wiring in some cases.
2. Note that the 3 burner mounting studs are in the 9, 12, and
3 o’clock positions on burner mounting plate. (See Fig. 2,
A.)
3. Place furnace in installation position (for example on its
side).
4. Reposition burner mounting stud.
a. Remove burner mounting stud that is now in 6 o’clock
position. (See Fig. 2, B.)
b. Reinstall stud in other open position on mounting plate
so that once again there are studs in the 9, 12, and 3
o’clock positions. (See Fig. 2, A.) It may be necessary to
use 2 of the burner mounting nuts as "Jam Nuts" on stud
in order to provide a means of using a wrench to remove
a tight stud.
5. Reinstall burner ensuring that all 3 burner mounting nuts are
tight.
IMPORTANT:
Burner must always be installed in upright posi-
tion with the ignition control on top.
OPERATIONAL CHECKOUT
DO NOT START BURNER UNLESS BLOWER ACCESS
PANEL IS SECURED IN PLACE.
Installation of furnace is now complete and operational checkout
may be performed.
I.
START-UP
1. Check wiring against wiring diagram shown in Fig. 9.
2. Open valve on oil supply line.
3. Reset primary control.
4. Set thermostat above room temperature.
5. Set main electrical switch to ON position. Burner should
start.
DO NOT TAMPER WITH UNIT OR CONTROLS—CALL
YOUR SERVICE TECHNICIAN.
II.
RECOMMENDED INSTALLATION PRACTICES AND
COMBUSTION CHECK
In order to obtain optimum performance from oil burner, the
following setup procedures must be followed:
1. A test kit (Bacharach No. 5022 kit or equivalent) to measure
smoke, stack draft, over-fire draft, CO
2
, and stack tempera-
tures MUST be used in order to obtain proper air band
setting. Although all of the above measurements are re-
quired for optimum setup and efficiency data, the most
important readings that must be taken are smoke number,
over-fire draft, and stack draft.
2. The proper smoke number has been established by engi-
neering tests to be between 0 and 1. This degree of smoke
emission is commonly referred to as a "Trace" of smoke. It
is recommended to use a Bacharach true spot smoke test set
or equivalent.
3. In order to ensure proper draft through furnace, a baromet-
ric draft regulator (supplied with furnace) must be installed
as close to outlet of furnace as possible.
In order for this device to function properly, barometric
damper must be mounted with hinge pins horizontal and
face of damper vertical. (See instructions included with
damper.) The draft regulator should be adjusted after
furnace has been firing for at least 10 minutes, and stack
draft should be measured and set between -0.025 and -0.035
in. wc. The draft should be checked with a Bacharach MZF
draft gage or equivalent.
4. The over-fire draft, which is taken through hole provided in
observation door, is a measurement necessary to determine
if there is a blockage between oil burner and flue outlet.
There should be a pressure drop of between 0.005 and 0.020
in. wc through furnace. This would set the range of the
over-fire draft between -0.01 and -0.03 in. wc. A reading
above -0.01 in. wc (for e0.1 in. wc) would indicate
that furnace is in an extremely high-pressure condition in
primary section. This condition may be caused by excessive
combustion air due to air band being too wide open or a lack
of flue draft (chimney effect) or some other blockage, such
as soot, in secondary section of heat exchanger.
5. The CO
2
and stack temperature instruments enable you to
obtain data required to determine thermal efficiency of
furnace.
6. An oil filter should be installed as close to burner as
possible with ALL oil burners and is essential on lower
firing rate burners. We recommend the use of a low
pressure drop oil filter such as the General Filter, Inc. model
#1A-25A or equivalent. It is critical that oil capacity be
equivalent or greater than fuel pump gear capacity. For a
2-pipe system, this is 25 gph.
7. The oil pressure regulator is factory set to give nozzle oil
pressures of 100 psig. The firing rate noted on nameplate
may be obtained with "standard" nozzles by adjusting pump
pressure as noted in Table 2 or on label on furnace.
On a new installation, air entrapped in oil line leading from
tank to nozzle must be thoroughly purged in order to
prevent excessive after drip. The oil pump is provided with
a special fitting enabling you to purge any air between tank
and oil pump. The proper procedure for performing this
operation is as follows:
a. Place a piece of clear plastic 1/4-in. diameter tubing over
purge fitting on oil pump.
b. Start oil burner, then open purge fitting and allow burner
to run until purge tube is completely free of air bubbles.
c. Tighten purge fitting. Allow oil to run to nozzle and fire
burner.
d. If purging takes longer than 30 sec and no flame has
been established, burner stops. Push reset button on top
of primary control to restart burner.
e. For detailed information on operation of primary control,
refer to instructions included with furnace.
Fig. 2—Burner Mounting Studs
A95172
A
B
TABLE 2—BURNER, NOZZLE, AND PUMP
PRESSURE CHART
UNIT
SIZE
FIRING
RATE
GAL/HR (US)
PUMP
PRESSURE
(PSIG)
BECKETT OIL BURNER
Model
Nozzle
060210
1.50
100
AFG
1.50 gph
70° Solid
—7—
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