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START-UP,
ADJUSTMENT,
AND SAFETY
CHECKOUT
Step
1 --
Operational
Checkout
Installation
of furnace
is now
complete.
Perform
the following
checkout
procedures.
1. Correct
nozzle size has been selected
for desired
input rate.
2. Preliminary
air adjustments
on the burner
comply
with the
technical
specifications
of this manual.
3. The blower
speed
adjustments
fnr heating
and cooling
are
appropriate
and according
to the technical
specifications
of
this manual.
4. Electrical
wiring
is completed
according
to Fig. 17.
5. Blower
rail locking
screw is tightened,
and
6. Blower
access door is secured
in place.
7. Valve on oil supply line is open.
8. RESET
BUTTON
on primary
control is pushed
in or reset.
9. The Blocked
Vent Shut-off
(BVSO)
is installed
(if applic-
able) according
to instructions
provided.
10. Thermostat
is set fnr heating
mode
and
set above
room
temperature.
If all of the above items
have been
performed,
set main electrical
switch to ON position
and burner
should
start.
Purging Oil Line
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 which
allows purging
of any air between
tank and oil pump.
The proper
procedure
for performing
this operation
is as follows:
1. Place a piece of clear
plastic
1/4-in.
diameter
tubing
over
purge fitting
on oil pump.
2. Start oil burner,
then open purge fitting and allow burner
to
run until purge tube is completely
free of air bubbles.
3. Tighten
purge
fitting.
Allow
oil to run to nozzle
and the
burner.
4. If purging
takes longer
than 15 sec and no flanm has been
established,
burner
stops.
Push
reset
button
on front
of
primary
control to restart burner.
Operating
Sequence
- Oil Heating
Mode
1. The W-R
contact closes.
2. The burner
motor
starts
up to pc-purge
the combustion
chamber
for a period of 10 to 15 seconds.
During
that time
a spark is established
on the electrodes.
3. The
solenoid
valve
opens
and
a flame
is established.
Shortly
after, the electrodes
cease to spark.
4. The blower
runs up to full speed.
The delay depends
on the
adjustment
that were
made
on the electronic
board,
which
controls
the blower
motor.
Refer to Supply
Air Adjustment
section,
as well as the CFM Table 6 for more details.
5. When the call for heat is satisfied,
the solenoid
valve closes,
the burner
motor stops and the flame goes out.
6. The blower
stops
shortly
after the burner.
The delay
de-
pends
on the adjustments
that were
made on the electronic
board that controls
the blower.
Refer to Supply
Air Adjust-
ment Sections
as well as the CFM table for more details.
NOTE:
A detailed
operating
sequence
of the oil burner
is outlined
in the instructions
provided
with the burner.
Step
2 --
Combustion
Check
In order
to obtain
optimum
performance
from
oil burner,
the
following
setup procedures
must be followed:
1. A test
kit to measure
smoke,
stack
draft,
over-fire
draft.
CO2, oil-pump
pressure,
and stack temperatures
MUST
be
used in order to obtain
proper air band setting.
Although
all
of the above measurements
are required
for optimum
setup
and efficiency
data, the most
important
readings
that nmst
be taken are smoke number,
over-fire
draft, stack draft, and
oil pump
pressure.
2. The
proper
smoke
number
has
been
established
by
engineering
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.
a. Pierce a test hole in the smoke pipe. near the furnace
breach.
Insert the smoke test probe into the hole.
b. Starting
with a 0 smoke reading,
gradually
reduce the
burner
air setting until just a trace of smoke results.
(#1
on the Bacharach
Scale).
c. Take a CO 2 sample
at the same test location
where the
#1 smoke
reading
was taken and make note of it.
d. Adjust
the burner
air setting
to obtain
a CO 2 reading
1% lower than the reading
associated
with the #1
smoke.
This method
of adjusting
the burner
will result in clean
combustion
and ensure the proper functioning
of the
system.
3. In order to ensure proper
draft through
furnace,
a barometric
draft regulator
(supplied
with furnace)
must be installed.
In
order for this device to function
properly,
barometric
damp-
er 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 5 min., and set between
-0.025
and
-0.060
in. wc.
4. The over-fire
draft, which
is taken through
the observation
port (located
above burner),
is a measurement
necessary
to
determine
if there is a blockage
between
oil burner
and flue
outlet.
The over-fire
draft must
be set within
the range
shown
in
the Technical
Specifications.
A reading
outside
the range would
indicate
that furnace
is in
an extremely
high-pressure
condition
in primary
section.
This condition
may be caused by any of the following
prob-
lems:
a. Excessive
combustion
air due to air band being too
wide open.
b. A lack of flue draft (chimney
effect) or some other
blockage,
such as soot, in secondary
section of heat
exchanger.
c. Use of an oversized
nozzle
input.
d. Pump pressure
over the values listed in Table 4.
FURNACE
INPUT
(BTUH)
70,000
84,000
98,000
Table 4 - Burner
Input
and Nozzle
Size
FIRING
RATE
DELAVAN
NOZZLE
GAL/HR
(US)*
RIELLO
40-F3
BECKETT
NX
0.50
0.40-
70A
0.40-
60A
0.60
0.50 - 70A
0.50 - 60A
0.70
0.60 - 70A
0.60 - 60A
PUMP
PRESSURE
(PSIG)
155
145
135
* For rating purposes only.
5. The (:02
and stack-temperature
instruments
enable
you to
obtain
data
required
to determine
thermal
efficiency
of
furnace.
17
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