Carlin 201CRD User manual

CARLIN
"CRD"
OIL
BURNERS
MODEL
200CRD
2.00
to
5.00
GPH
Totally
new
in
design
and
performance.
Compact,
versatile
3450
rpm
models
using
No.
2
oil
in
the
2.00-5.50
gph
range
feature
a
unique
com¬
bustion
head
which
assures
positive
flame
retention
under
a
wide
variety
of
operating
conditions.
MODEL
201CRD
4.00
to
5.50
GPH
Listed
by
Underwriters'
Laboratories,
inc
IMPORTANT:
Models
200CRD
and
201CRD
are
identical
in
all
respects
except
for
the
diameter
of
the blower wheel
(fan)
which
is
larger
in
Model
201CRD
to
provide
adequate
air
for
the
higher
firing
range.
All
other
parts
are
interchangeable,
a
significant
advantage
in
servicing
and
in
keeping
parts
in¬
ventories
to
the
lowest
possible
level.
Fig.
1
Flange
mounted.
Fig.
2
Pedestal
mounted.
Pedestal
or
flange
mounting
and
Sundstrand
or
Webster
fuel
unit
are
optional
on
both
models.
Carlin
"CRD"
oil
burners
feature
an
adjustable
com¬
bustion head
assembly
which
permits
regulation
of
the
air
pattern
in
the
flame front
area
for
optimum
velocity
with
symmetrical
distribution
whether
the
firing
rate
be
at
the
low,
intermediate,
or
high
portion
of
the
firing
range.
The
usual
lack
of
turbulence
at
the
lower
firing
range
in
other
burners
has
been
overcome
and the
adjustment
feature
"tunes
out" instabilities
and
rough
starts
inherent
in
fixed-head
designs.
Significant
advantages
offered
by
"CRD"
burners
include:
•
Smooth
operation,
relatively
low
noise level.
•
Clean
combustion;
zero
to
trace
of
smoke.
•
Instantaneous
cut-off
assured
by
solenoid
oil
valve.
•
Higher
CO?
for
optimum
efficiency.
•
Excellent
performance
in
tested units
without
a
refractory
combustion
chamber.
•
Positive
ignition
and
stable
operation.
•
Flame is
narrow
and
compact.
•
Insensitive
to
draft
or
back
pressure.
•
Can
operate
as
a
forced draft
burner.
•
Highly
resistant
to
pulsation.
•
Same
air
handling
parts
over
entire
firing
range
of
each
burner.
•
Compact
design
using
standard
components.
•
Easy
to
install,
adjust,
and
service.
THE
CARLIN
COMPANY
ÿ
Wethersfiel
-MKITTTiM'Iÿ
Ms

GARUN
III
BURNERS
SPECIFICATIONS
—
DIMENSIONS
STANDARD
MODELS
—
7",
9",
and
1 1"
air
tube,
flange
or
ped¬
estal
mounting.
CAPACITIES
—
Model
200CRD,
2.00
to
5.00
GPH.
Model
20
1
CRD,
4.00
to
5.50
GPH.
(GPH
ratings
are
based
on sea
level
to
2,000
ft.
elevation.
For
every
1,000
ft.
rise
over
2,000
ft.,
reduce
the maximum
GPH
rating
by
4
percent.)
MOTOR
—
3450
RPM,
115-volt,
60-Hz,
l-phasc.
Va
H.P.
with
thermal
overload
protection.
48-frame
with
"N"
flange
per
NEMA
specifications.
TRANSFORMER—
120V/
10,000V.
23
milliampcrcs,
60
Hz.
Shielded
against
radio and
TV
interference.
UL
listed
for
continuous
duty;
interchangeable.
FUEL
UNIT
—
Standard
style
with
7/ic"
shaft
diameter.
3450
RPM.
Designed
for
quick
cut-off.
Single-stage
with
built-in
strainer
and
pressure
regulating
valve.
Strainer
and
nozzle
capacities
exceed
the
maximum
rating
of
the
burner.
Equipped
with
easy-flow
bleed
valve.
OIL
VALVE
—
Standard
burner
equipped
with
quick
opening
and
instantaneous
closing
magnetic
solenoid
valve
for
smooth,
clean
starts
and
sharp,
clean
cut-offs.
COMBUSTION
HEAD
and
ELECTRODE
ASSEMBLY
—
Unique
CRD
"controlled
flame
retention"
design
provides
adjustable
aerodynamics
so
that
air
pattern
and
velocities
can
be
op¬
timized
for
any
nozzle
size
within
the
entire
range
of
the
burner
without
a
change
of
parts.
High-chromium
stainless
steel
electrodes
with
porcelain
insulators
fully
glazed
and
counterbored
for
maximum
clean-
ability
and
safety.
Stainless
steel
heat
shield
on
air tube
pre¬
vents
overheating
of
combustion
head
and
nozzle.
NOZZLE
—
Stainless
steel
with
fine-mesh
strainer.
Spray
angle
and
spray
pattern
specified
for
optimum
combustion.
BLOWER
WHEEL
(FAN)
—
Precision
balanced. Mounted
directly
on
motor
shaft.
Dimensions:
Model
200CRD,
5Va"
OD
x
3Vi"
width.
Model
201
CRD,
5%"
OD
x
4"
width.
HOUSING
—
Rugged
grey
iron
casting
line-bored
for
accurate
alignment
of
motor
and
pump
shaft
centerlines.
Streamlined
fan-scroll
for
more
positive
and
quieter
air
delivery.
COUPLING
—
Flexible-type,
oil-resistant,
short
length
with
slip-
on
end
fittings
for
easy
service.
CONTROLS
—
Thermostat and
limit
control.
120-volt,
60-Hz
burner-mounted
primary
relay
with
cadmium
cell
flame
de¬
tector.
Complies
with
UL
requirements.
SHIPPING WEIGHT
—
Approximately
65
lbs.
DIMENSIONS
ARE
APPROXIMATE
MOUNTING
PLATE
TYPICAL
FLANGE
APPLICATIONS
EFFECT
OF
BACK
PRESSURE
ON
MAXIMUM
FIRING
RATES
The
maximum
firing
rates
of
5.00
gph
for
Model
200CRD
and
5.50
gph
for
Model
201CRD
are
based
on
operation
with
zero
to
slightly
negative
pressure
such
as
0.01"
to
0.03"
W.C.
draft
over
the
fire
as
normally
encountered
in
a
natural
draft
unit.
When
a
unit is
designed
for
forced draft
operation
with
a
positive
pressure
(back
pressure)
over
the
fire,
the
maximum
air
capacity
of
the
burner is reduced
in
proportion
to
the
amount
of
pressure.
As
a
result,
the maximum
firing
rate
is
also
reduced. The
graph,
right,
shows
the
maximum
firing
rate
in
gph
of
each
model
with
various
amounts
of
pressure
in
the
combustion
chamber.
As
an
example,
the
Model
200CRD
has
a
maximum
firing
rate
of
just
over
4
00
gph
when
fired
against
a
back
pressure
of
0.20"
W.C.
Note:
Installation
of
Models
200CRD
and
201CRD
in
trailers
or
furnaces
with
more
than
0.1"
back
pressure
or
with
undersized
breechlngs
(See
Table
A)
or
chimneys
(See
Table
B)
Is
not
recommended
unless
the
unit
has
been
pre-tested
with
these burners under
these
conditions.
x
0.
o
I
UJ
5
a:
o
z
£
u.
X
<
z
Table
A
Table
B
Max.
Firing
Rate
GPH
Min.
Diameter
Smoke
Pipe
(Ins.)
1.80
6
2.50
7
3.10
8
4.50
9
7.00
10
RECTANGULAR
ROUND
Max.
Firing
Rate
Chimney
Size
Liner
Size
Max.
Firing
Rate
Uner
Size
GPH
Nom.
(Ins.)
(Ins.)
GPH
(Ins.)
2.10
8x8
63/4
X
63/4
1.30
6
3.50
8x
12
6i/2
x
101/2
1.80
7
5.30
12
x
12
93/4
X
93/4
2.50
8
7.70
12x16
91/2
x
131/2
4.50
10
5.60
11
Add
5'
to
height
when
two
units
are
connected
to
one
chimney.
DRILL
S
TAP
3
HOLES
3/fl
-
16
FLANGE
UNIVERSAL
FLANGE
MOUNTING
PLATE
OPENING
REFRACTORY
OR
HIGH
TEMP
INSULATION
MODEL
ZOO
CRD
MODEL
0.0
0 20
0.40 0.60 0.80
LOO
1
ZO
PRESSURE
IN
COMBUSTION
CHAMBER
(INS
W
C
)

INSTALLATION
and
OPERATINQ
INSTRUCTIONS
For
Use
By
Qualified
Service
Technicians
Only
CARLIN
OIL
BURNERS
Models
200CRD
and
201
CRD
(60-Hz)
FLANGE
MOUNTED
PEDESTAL
MOUNTED
(Pedestal
or
flange
mounting
is
optional
on
both
models.)
DESCRIPTION
"CRD"
burners
feature
a
combustion head
incorporating
a new
design
concept
which
provides
a
means
to
control
the air
pattern
to
match the nozzle
requirements.
The
aerodynamics
for
optimum
combustion
are
easily
adjusted
for
the
nozzle
size
without
changing
the
air-handling
hard¬
ware.
The
flame front
is initiated
inside the
air
tube
so
that
no
erratic
recirculating
gasses
from
the main chamber
area can
quench
the
flame
at
the
retention
ring.
The
letters
"CRD"
stand
for
"Controlled
Retention
—
Double
Speed."
Use
of
a
small blower
wheel
(fan)
operating
at
3450
rpm
provides
a more
positive,
yet
quiet,
air
flow
which
does
not
yield
to
normal
draft
variations
and
therefore
assures
a
more
constant
air-fuel
ratio
for
dependably
clean
combus¬
tion
day
after
day.
Models
200CRD
and
201
CRD
are
identical
in
design
except
that
the
201
CRD
has
a
larger
diameter blower wheel
and
a
higher
firing
range.
Model
No. Blower Wheel
(Fan)
Size
Firing
Range
200CRD
5Va
"
dia.
x
3%
"
wide
2.00-
5.00
GPH
201CRD
5%
"
dia.
x
4"
wide
4.00- 5.50
GPH
ASSEMBLING
THE
BURNER
(TWO-PAK)
1.
Remove the
air
tube
and
nozzle line
assembly
from
the
smaller
carton.
If
nozzle is
not
installed,
see
instruc¬
tions
under
(
3
)
,
page
2.
(Continued,
page
2)
It
is
important
that
the installation
of
the
oil
burner,
piping
and
fittings,
safety
devices, controls,
electrical
wiring
and
equipment
be
done
in
accordance
with
national
and/or
local
regulations
of
the authorities
having jurisdiction
over
such
installation.
1

Fig.
1
TYPICAL
FLANGE
APPLICATIONS
UNIVERSAL
FLANGE
MOUNTING
PLATE
OPENING
ÿ
REFRACTORY
OR
HIGH
TEMP
INSULATION
53/4—
7%
DRILL
a
tap
3
HOLES
r*
3/8
-
16
FLANGE
MOUNTING
PLATE
ASSEMBLING
THE
BURNER
(Cont.)
2.
Remove
the
main
housing
assembly
from
the
larger
carton.
3.
Install the nozzle.
a.
Loosen
the
clamping
screw
on
the
retention
ring
assembly
and
slide
the retention
ring
off
the
adapter.
b.
Install
and
tighten
the
proper
nozzle
(45°
S-S
Hago)
in
the
adapter.
Be
careful
not
to
damage
the elec¬
trode
insulators
or
to
bend
the
wires.
c.
Replace
the
retention
ring
assembly,
slipping
one
of
the
riveted
arms
through
the
14
-inch
gap
between
the electrode ends.
This
top
arm
should be
straight
up.
Also
be
sure
that
the
retention
ring
clamp
is
tight
against
the shoulder
on
the
adapter.
Then
tighten
the
clamping
screw.
4.
Check
the electrode
settings
specified
as
follows:
Vs
-inch
gap,
14
-inch
above
the nozzle
centerline,
and
14-
to
5/16-inch
ahead
of
the nozzle
tip.
See
Fig.
2.
Fig.
2
5.
Swing
open
the
transformer,
and
slide
the nozzle
line
assembly
into
the air tube.
Do
not
force
it.
The
flame
retention
ring
must
be
lifted
and
guided through
the
throttle
ring
(a
reduced
diameter)
in
the end
of
the
air
tube.
6.
Place the
nozzle line
yoke
in
the
groove
in
the
adjusting
screw.
7.
Swing
the
transformer
to
the closed
position
and
fasten.
8.
Connect
the
flared
fitting
on
the
copper
oil
line
to
the
nozzle
line
and
tighten.
ABOUT COMBUSTION
CHAMBERS
Models
200CRD
and
201
CRD
operate
with
superior
effi¬
ciency
and
cleanliness
in
properly
designed
refractory-type
combustion
chambers.
Very
wide tolerance
to
burner
adjustments
and
other variables
is
found
when these
cham¬
bers
are
used.
Noise levels
are
also
reduced.
Table
1,
page
3,
shows the recommended minimum
in¬
side dimensions
for
refractory
brick,
refractory
pre-cast,
and
pre-formed
refractory
fiber
chambers.
Due
to
their
quick
warm-up
properties,
the
lightweight insulating-type
materials
are
slightly
preferable
although
these burners
show
less
dependence
upon
refractory
temperature
than
previous
models.
Refractory
materials
in
boilers and
fur¬
naces
should
be
capable
of
withstanding
2600°F
(
1427°C).
The
notes
accompanying
Table
1
provide
further
details
relative
to
variations
in
dimensions
and
geometry.
Refer
to
Figs.
3
and
4,
page
3.
FIRING
BOILERS WITHOUT REFRACTORY
CHAMBERS
Depending
upon
the
geometry
of
the
combustion
space
some
units
perform
better
than others
without
refractory.
When
the back
wall
of
the
unit
coincides
approximately
with
the
end
of
the
flame,
a
target
of
refractory
material
is
essential.
Zero smoke
readings
are
made
easier
if
a
refrac¬
tory
fiber
"rug"
or
fill
material
is
used
on
the base under
the
flame.
Table
2,
together
with
its
footnotes,
gives
the
essential
dimensions
and
information
needed
to
provide
conditions
for
satisfactory
operation
without
complete
chambers.
Refer
to
Figs.
5,
6,
7,
and
8,
page
3.
INSTALLING
THE
BURNER:
FLANGE
MOUNTED
I.
Measure,
in
the burner
opening,
the
distance
from
the
inside
of
the combustion chamber
to
the
outside
of
the
mounting
plate
to
find
the
insertion
length
of
air
tube
needed.
Position
flange
on
air
tube
at
a
point
from
end
of
burner
corresponding
to
this
measurement.
Tighten
set
screws
to
anchor
flange.
The
flange
is
now
located
so
that
the
end
of
the burner
will
be
flush,
or
almost
flush,
with
the inside
of
the
combustion
chamber.
See
Fig.
4
(side
view)
page
3,
and
Fig.
9,
page
4.
2.
Slide
the
end
of
the
air
tube into the
opening
and
secure
the
flange
to
the
front
plate
using
three
%-16
cap
screws
(or
studs
and
nuts)
provided.
(Continued,
page
4)
2

Fig.
4
Brick
combustion
chamber,
side
view.
REFRACTORY
Fig.
3
Brick combustion
chamber,
front
view.
INSULATION
Table
1.
RECOMMENDED
MINIMUM
INSIDE
DIMENSIONS
OF
REFRACTORY-TYPE
COMBUSTION
CHAMBERS
(Inches)
1
Firing
Rate
(GPH)
2
Length
(L)
3
Width
(W)
4
Dimension
(C)
5
Suggested
Height
(H)
6
Minimum
Dia.
Vertical
Cyl.
2.00
15
11
5.5
11 14
2.50
17 12
6.0
12
15
3.00
20
13
6.0
13
17
3.50
23
14
6.5
14
20
4.00
25
14
6.5
14 22
4.50
27
15
7.0
15
24
5.00
29
15
7.5
15 26
5.50
31
16 8.0
16
28
1.
Flame
lengths
are
approximately
as
shown
in
column
(2).
Often,
tested boilers
or
furnaces
will
operate
well
with
chambers
shorter
than the
lengths
shown
in
column
(2).
2.
As
a
general
practice
any
of
these
dimensions
can
be
exceeded without much
effect
on
combustion.
3.
Chambers
in
the
form of
horizontal
cylinders
should
be
at
least
as
large
in
diameter
as
the
dimen¬
sion
in
column
(3).
Horizontal
stainless
steel
cylindrical
chambers
should
be
1
to
4
inches
larger
in
diameter
than the
figures
in
column
(3).
4.
Wing
walls
are
not
recommended.
Corbels
are
not
necessary
although they
might
be
of benefit
to
good
heat
distribution
in
certain
boiler
or
furnace
designs.
Table
2.
MINIMUM
DIMENSIONS RECOMMENDED
IN
BOILERS
FIRED
WITHOUT REFRACTORY
CHAMBERS
(Inches)
1
Firing
Rate
(GPH)
2
Length
(L)
With
Target
3
Length
(L)
Without
Target
4
Width
(W)
5
Dimension
(C)
6
Dimension
(D)
2.00
15
18
13
5.5
6.5
2.50
17
21
14
6.0
7.0
3.00
20
24
15
6.0
7.5
3.50
23
27
16
6.5
8.0
4.00
25
30
16
6.5
8.0
4.50
27
32
17
7.0
8.5
5.00
29
35
17
7.5
8.5
5.50
31
37
18
8.0
9.0
1.
As
a
general
practice
any
of
these dimensions
can
be
exceeded
without
much
effect
on
combustion.
2.
A
fiber-type
refractory
"rug"
or
fill
material
to
cover
the
floor
area
of
the
combustion
space
is
recommended
for
cleaner combustion
and
to
protect
the
base.
3.
When
a
refractory
or
refractory
fiber
target
is
used,
the
lengths
in
column
(2)
apply.
If
the
lengths
are
equal
to
or
longer
than
in
column
(3)
no
target
material
is needed
unless
recommended
by
the
boiler
manufacturer.
REFRACTORY
Fig.
8
Scotch
Marine
boiler. No
combustion
chamber.
C)
() C) C) C)
C)
C)
O
REFRACTORY
•
•
*
-
:
Fig-
5
Wet
leg
boiler. No
combustion
chamber,
side
view.
O
A
I*
4
5
»t
*
"
*
*
A
*
ÿ
*
%
*
*
4,
.
V»
*
4
*
»
<1
»
•>
"
.
'
*
**
1
*
»
-
*
i
%*
**»**
+
*—
*
*
*—
1
Fig.
6
Wet
leg
boiler.
No
combustion
chamber,
end view.
Fig.
7
Wet
leg
boiler,
end
view,
with
low
"crown
sheet."
Semi-brick
chamber
construction
to
provide adequate
"C"
and
"D"
dimensions.

Fig.
9
O
c
'
c
(i
n,
•«v
0
*1
<•
•>
n
&
»
-
Fig.
10
INSTALLING
THE
BURNER:
PEDESTAL
MOUNTED
1.
3.
Adjust
the
pedestal
so
that
the
height
of
the
air
tube
matches
the
location
of
the
burner
opening.
Slide
the end
of
the
air
tube
into the
opening
so
that
it
is
flush
or
nearly
flush
with
the
inside
of
the combus¬
tion
chamber.
See
Fig.
10.
From the
outside
of
the
unit,
seal the
space
around the
air
tube
with
asbestos
cement
or
equivalent.
WIRING
When
the
burner
is
furnished
with
a
burner-mounted
primary
control,
field
connections
are
to
be
made
in
the
4"
x
4"
junction
box under
the
control.
The
motor,
trans-
SEAL
WITH
ASBESTOS
CEMENT
o
WIRING
(Cont.)
former,
oil
valve,
and
flame
detector
are
pre-wired.
High
limit,
low
water
cut-off,
fusible
link
switch,
emergency
and
service
switches
are
wired
in
series between
the
hot
supply
lead
and the
unwired
black lead
in
the
control.
The ther¬
mostat
or
operating
control,
if
used,
is
wired
to
"T"
and
"T."
Otherwise,
jumper
"T"
and
"T."
When
the
primary
control
is
mounted
on
the
boiler
or
furnace,
the
motor,
transformer,
and
oil
valve
connections
are
joined
in
the
junction
box
mounted
on
the
motor.
115-
20V 60
Hz
SUPPLY
THERMOSTAT
OR
operating
CONTROL
LIMITS
WHITE
KEY
YELLOW'
•
FACTORY-
WIRED
8Y
CARLIN
-
FIELO
WIRING
GROUND
IGN.
-0
-
0
IGNITION
TRANSFORMER
ELECTRONIC
TIME
DELAY
8
OIL
VALVE
CD
Fig.
11
HONEYWELL
TYPE
R8184G
CONSTANT
IGNITION
NOTE:
CONSTANT
IGNITION
Spark
"ON"
during
entire
burning
cycle.
*E.T.D.
not
furnished
as
standard
equipment.
FLAME
DETECTOR
Fig.
12
HONEYWELL
TYPE
8185E
INTERMITTENT
IGNITION
NOTE:
INTERMITTENT
IGNITION
Spark
"ON"
only
at
burner
start.
*E.T.D.
not
furnished
as
standard
equipment.
1
15-
120V 60
Hz
SUPPLY
H
—
thermostat
or
OPERATING
CONTROL
LIMITS
WHITE
KEY
YELLOW'
•
FACTORY-WIRED
BY
CARLIN
-
FIELD
WIRING
GROUND
IGN.
0
-
0
IGNITION
TRANSFORMER
ELECTRONIC
TIME
DELAY
8
OIL
VALVE
CD
FLAME
DETECTOR
4

HOW TO
ADJUST
THE
COMBUSTION
HEAD
RETENTION
RING
AND
The
retention
ring
position
ahead
of
the
throttle
ring
is
adjustable
from
zero
(flush)
to
1
'/a
-inches
(Dimension
"A",
Figs.
13
and
14).
Turning
the
adjusting
screw
in
(clockwise)
increases
the
distance
"A"
ahead. This
dis¬
tance
is
indicated
by
reading
the
scale
on
the
nozzle
line
across
the
corners
on
sides
of
the
channel
guiding
the
noz¬
zle
line.
Each
division
is
1/16-inch.
AIR
SHUTTER
ADJUSTMENTS
(Cont.)
by adjusting
the
assembly
further
ahead
and
reducing
the
air
pressure
(closing
the
air
shutter).
In
this
case
(3.50
gph)
the maximum
position
would
be
9/16-inch
ahead;
and
the air
shutter would be
at
40
percent.
This
latter
combina¬
tion
of
settings
might
require
a
refractory
chamber
for
clean
combustion. Tables
3
and
4
are
provided
as
a
guide.
Fig.
13
THROTTLE
RING
RETENTION
RING
Fig.
14
STOP
NUT
NOZZLE
LINE
YOKE
SCALE
ADJUSTING
SCREW
INDICATED
FROM
THIS
POINT
Table
3.
RECOMMENDED
SETTINGS
FOR
MODEL
200CRD
(5V4"
x
33/4"
Blower
Wheel)
Retention
Ring
Setting,
Air
Shutter
Firing
Rate
Inches
on
Scale,
Opening
GPH
Dimension
"A"
(Percent)
2.00
Vs
*
Vb
30
±
15
2.50
'A
=*=
'A
•
35
±
15
3.00
Vu
=*=
Vs
40
=»=
20
3.50
Vis
=*=
Vb
70
±
30
4.00
Vb
±
Vb
80
±
20
4.50
13/ig
=*=
Vb
80
±
20
5.00
15/i6
=*=
Vis
100
Table
4.
RECOMMENDED
SETTINGS
FOR MODEL
201CRD
(53,4"
x
4"
Blower
Wheel)
Firing
Rate
GPH
Retention
Ring
Setting,
Inches
on
Scale,
Dimension
"A"
Air
Shutter
Opening
(Percent)
4.00
Vis
*
Vis
35
±
15
4.50
3A
*
'A
50
±
20
5.00
3
Vis
=*=
A
75
25
5.50
1
=*=
Vs
90
±
10
NOZZLE
SPECIFICATIONS:
45°
S-S
HAGO
Other
makes
of
nozzles
may
or
may
not
prove
satisfactory.
Sufficient
test
data
is
not
available
to
make
other
recom¬
mendations. The
correlation
of
nozzle
sprays
between
dif¬
ferent
manufacturers
is
not
consistent.
For
special
applications,
other
specifications
might
pro¬
vide
a
more
desirable
pattern.
RETENTION
RING
AND
AIR
SHUTTER ADJUSTMENTS
Tables
3
and
4
show
for
each
firing
rate
the recommended
positions
of
the
flame
retention
ring
with
the
corresponding
amounts
of
air
shutter
opening.
With
the
retention
ring
set
at
the
minimum
recommended
distance
ahead,
more
air
pressure
is
needed,
and the
fire
is
more
intense,
therefore
better
for
operating
without
refractory
chambers.
For
in¬
stance,
at
3.50
gph
with
the retention
ring
at
5/16-inch
ahead
and the air shutter
at
100
percent
open
a
very
in¬
tense,
hot
flame
would
be
developed
so
that
it
should be
optimum
for
clean
burning
with
no
chamber.
A
softer,
quieter
flame
(somewhat
longer,
too)
would
be
developed
SEE
PAGE
6
FOR
FUEL
UNIT
AND
OIL
LINE
DATA,
LIGHT-OFF
AND
ADJUST¬
MENT,
AND
EFFECT
OF
BACK
PRES¬
SURE
ON
MAXIMUM
FIRING
RATES.
5

FUEL
UNITS
AND
OIL
LINES
Standard
burners
are
provided
with
single-stage
3450
rpm
fuel
units
with
the
by-pass
plug
removed
for
single-pipe
installations.
A
single-pipe
system
is
recommended
whenever the bot¬
tom
of
the
fuel
tank is above
the burner
or
is
at
the
same
level
as
the burner.
This
includes
outdoor
fuel
tanks
that
are
at
such levels.
A
two-pipe
system
is recommended
when
the
fuel
tank is
below
the level
of
the
burner,
and the
fuel
unit
must
pull
(lift)
the
fuel
up
to
the
burner.
For
two-pipe
installations
the
by-pass
plug
must
be
installed.
Table
5
shows,
for
the
standard
single-stage
fuel
unit,
the
allowable
lift
and
lengths
of
Vi"
and
%"
OD
tubing
for
both suction
and
return
lines
in
two-pipe
systems.
Table
5.
SINGLE-STAGE
UNITS
—
TWO-
PIPE
SYSTEMS
(SUNDSTRAND JA2BB-100)
Lift
Length
of
Tubing
(feet)
(feet)
W
0D
V%"
OD
0 100 100
2
100 100
4
84 100
6 66
100
8 48
100
10
30
83
When
using
the
optional
two-stage
fuel
unit
a
greater
amount
of
lift
is
attainable
as
shown
in
Table
6.
Table
6.
TWO-STAGE
UNITS
—
TWO-PIPE
SYSTEMS
(SUNDSTRAND H2PB-100)
Lift
Length
of
Tubing
(feet)
(feet)
W
OD
Vt"
OD
0
100 100
2
88
100
4
78
100
6
69
100
8
59
100
10 49
100
12
39
100
14
29 82
15
24
68
a.
CARLIN
COMPANY
912
SILAS
DEANE
HIGHWAY
WETHERSFIELD,
CONNECTICUT
Form
No.
202
Be
sure
that all
oil
line
connections
are
absolutely airtight.
Check
all connections
and
joints.
Flared
fittings
are
recom¬
mended.
Do
not
use
compression
fittings.
Open
the
air-bleed
valve
and
start
the burner.
For
clean
bleed,
slip
a
3/
16"
ID
hose
over
the
end
of
the bleed
valve
and
bleed
into
a
container.
Continue
to
bleed
for
15
seconds
after
oil
is
free
of
air
bubbles.
Stop
the burner
and
close
the bleed valve.
LIGHT-OFF
AND
ADJUSTMENT
Before
re-starting
the
burner,
preset
the air shutter
and the
retention
ring
position
for
the
particular
firing
rate
ac¬
cording
to
Table
3
for 200CRD
or
Table
4,
page
5,
for
70ICRD.
If
the
fire
is
a
little
too
rich,
open
the
air
shutter
or move
the
combustion
head
forward
by
increasing
dimension
"A,"
Fig.
13,
page
5.
At
the lower
inputs,
a
very
slight
change
is
usually enough.
Adjust
draft
to
0.0
1
to
0.03
inches
W.
C.
over
the
fire
for
natural
draft
units.
Run
a
smoke
test.
Strive
for
zero or
a
trace.
Each
time
further
adjustment
of
air
or
retention
ring
is
made,
reset
the
draft
to
0.01
to
0.03
inches
W.
C.
over
the
fire.
Check
CO2.
This should
be
over
10
percent,
and
will
often
be
over
12
percent,
in
a
well-sealed
unit.
Check for
good
ignition
and clean
cut-off.
If
cut-off
con¬
tinues
to
be
poor,
look
for
air
leaks
in
the
suction line
and
correct
them.
EFFECT
OF
BACK
PRESSURE
ON
MAXIMUM
FIRING
RATES
The
maximum
firing
range
for "CRD"
models
(5.00
gph
for
Model
200CRD
and
5.50
gph
for
Model
201CRD)
is
based
on
operation
with
zero
to
slightly negative
pressure
such
as
0.01
to
0.03
inches
W.
C. draft
over
the
fire
as
normally
encountered
in
a
natural
draft
unit.
When
a
unit
is
designed
for forced
draft
operation
with
a
positive
pressure
(back
pressure)
over
the
fire,
the
maxi¬
mum
air
capacity
of
the
burner
is reduced
in
proportion
to
the
amount
of
pressure.
As
a
result,
the
maximum
firing
rate
is
also
reduced.
Fig.
14
shows
the
maximum
firing
rate
in
gph
of
each
model
with
various
amounts
of
pressure
in
the
combustion
chamber.
As
an
example,
the Model
200CRD
has
a
maximum
firing
rate
of
just
over
4.00
gph
when
fired
against
a
back
pressure
of
0.20
inches
W.
C.
Fig.
15
1
Q.
O
I
UJ
s
tr
o
z
tr
u.
X
<
2
Printed
in
U.
S.
A.
MODEL
201
CRO
MODEL
200
CRD
PRESSURE
IN
COMBUSTION
CHAMBER
(INS.
W.C.)
6