Price - $3.00
INSTALLATION,OPERATINGAND
SERVICE INSTRUCTIONS FOR
LEDV SERIES DIRECT VENT
OIL FIRED BOILER
As an ENERGY STAR Partner, Burnham Corporation has determined that the LEDV-1, fired at the 0.60 GPH rate,
meets the ENERGY STAR guidelines for Energy efficiency established by the United States Environmental Protection
Agency (EPA).
For service or repairs to boiler, call your heating contractor. When seeking information on boiler, provide
Boiler Model Number and Serial Number as shown on Rating Label.
Boiler Model Number
Boiler Serial Number
Installation Date
LEDV__ - _______
6 _ _ _ _ _ _ _
Heating Contractor
Phone Number
Address
81433101R3-3/00
WARNING
Boiler materials of construction, products of combustion and the fuel contain alumina, silica,
heavy metals, carbon monoxide, nitrogen oxides, aldehydes and/or other toxic or harmful
substances which can cause death or serious injury and which are known to the state of California
to cause cancer, birth defects and other reproductive harm. Always use proper safety clothing,
respirators and equipment when servicing or working nearby the boiler.
This boiler contains very hot water under high pressures. Do not unscrew any pipe fittings nor
attempt to disconnect any components of this boiler without positively assuring the water is cool
and has no pressure. Always wear protective clothing and equipment when installing, starting
up or servicing this boiler to prevent scald injuries. Do not rely on the pressure and temperature
gauges to determine the temperature and pressure of the boiler. This boiler contains components
which become very hot when the boiler is operating. Do not touch any components unless they
are cool.
This boiler must be properly vented and connected to an approved vent system in good condition.
Serious property damage could result if the boiler is connected to an unapproved vent system .
This boiler needs fresh air for safe operation and must be installed so there are provisions for
adequate combustion and ventilation air.
The interior of the venting and air intake systems must be inspected and cleaned before the start
of the heating season and should be inspected periodically throughout the heating season for
any obstructions. Clean and unobstructed venting and air intake systems are necessary to allow
noxious fumes that could cause injury or loss of life to vent safely and will contribute toward
maintaining the boiler's efficiency.
This boiler is supplied with controls which may cause the boiler to shut down and not re-start
without service - If damage due to frozen pipes is a possibility, the heating system should
not be left unatttended in cold weather; or appropriate safeguards and alarms should be installed
on the heating system to prevent damage if the boiler is inoperative.
This boiler is designed to burn No. 2 fuel oil only. Do not use gasoline, crankcase drainings, or
any oil containing gasoline. Never burn garbage or paper in this boiler. Do not convert to any
solid fuel (i. e. wood, coal) or gaseous fuel (i. e. natural gas, LP/propane). All flammable debris,
rags, paper, wood scraps, etc., should be kept clear of the boiler at all times. Keep the boiler area
clean and free of fire hazards.
All boilers equipped with Burner Swing Door have a potential hazard which can cause severe
property damage, personal injury or loss of life if ignored. Before opening swing door, turn off
service switch to boiler and disconnect two halves of Burner Swing Door Interlock wiring harness
to prevent accidental firing of burner outside the combustion chamber. Be sure to tighten swing
door fastener completely and reconnect two halves of Burner Swing Door Interlock when service
is completed.
NOTICE
This boiler has a limited warranty, a copy of which is printed on the back of this manual.
It is the responsibility of the installing contractor to see that all controls are correctly installed
and are operating properly when the installation is complete. The warranty for this boiler is valid
only if the boiler has been installed, maintained and operated in accordance with these
instructions.
3
NOTICE
All boilers must be installed in accordance with National, State and Local Plumbing, Heating
and Electrical Codes and the regulations of the serving utilities which may differ from this
manual. Authorities having jurisdiction should be consulted before installations are made.
In all cases, reference should be made to the following Standards:
USA BOILERS
A. Current Edition of American National Standard ANSI/NFPA 31, “Installation of Oil Burning
Equipment”, for recommended installation practices.
B. Current Edition of American National Standard ANSI/NFPA 211, “Chimneys, Fireplaces,
Vents, and Solid Fuel Burning Appliances”, For Venting requirements.
C. Current Edition of American Society of Mechanical Engineers ASME CSD-1, "Controls and
Safety Devices for Automatically Fired Boilers", for assembly and operations of controls
and safety devices.
CANADIAN BOILERS
A. Current Edition of Canadian Standards Association CSA B139, "Installation Code for Oil
Burning Equipment", for recommended Installation Practices.
This boiler is suitable for installation on combustible flooring. Boiler cannot be installed on
carpeting.
For optimum performance a nd serviceability from this unit adhere to the following
recommendations:
A. Do not tamper with or alter the unit or controls. Retain your contractor or a competent
serviceman to assure that the unit is properly adjusted and maintained.
B. Clean firetubes at least once a year - preferably at the start of the heating season to remove
soot and scale. Inside of Combustion Chamber should also be cleaned at the same time.
C. Have Oil Burner and Controls checked at least once a year or as may be necessitated.
D. Do not operate unit with jumpered or absent controls or devices.
E. Do not operate unit if any control, switch, component, or device has been subject to water.
4
Table of Contents
I. Pre-Installation ......................................... 6
II. Unpack Boiler ........................................... 7
III. Water Piping and Trim ............................ 9
IV. Venting/Air Intake Piping ..................... 12
V. Electrical and Sequence of Operations .. 18
VI. Oil Piping ............................................... 20
VII. System Start-up ...................................... 22
VIII. Service and Cleaning.............................. 26
IX. Repair Parts ............................................ 29
Figure 1: LEDV Packaged Boiler
5
I. Pre-Installation
A. INSPECT SHIPMENT carefully for any signs of
C. PROVIDECOMBUSTIONAIRSUPPLYto
accommodate proper combustion of oil. Local and
national codes may apply and should be referenced.
damage.
1. ALL EQUIPMENT is carefully manufactured,
inspected and packed. Our responsibility ceases
upon delivery of crated boiler to the carrier in good
condition.
1. In unconfined spaces (basement) in buildings of
conventional frame, brick, or stone construction,
infiltration normally is adequate to provide air for
combustion. An unconfined space is a space whose
volume is greater than or equal to 50 cubic feet per
1000 BTUH of the combined input of all air
consuming appliances in the space.
2. ANY CLAIMS for damage or shortage in shipment
must be filed immediately against the carrier by the
consignee. No claims for variances from, or
shortage in orders, will be allowed by the
manufacturer unless presented within sixty (60)
days after receipt of goods.
2. In a confined space, combustion air may be ducted
directly from the outdoors to the burner. Refer to
Section IV for installation of air intake duct to the
burner.
B. LOCATE BOILER in front of final position before
removingcrate. SeeFigure1. Boiler'sapproximate
shipping weight is 325 pounds.
D. VENTILATION AIR must be provided to maintain the
ambient temperature at safe limits. Local and national
codes may apply and should be referenced.
1. LOCATE so that vent pipe will be short and direct.
Refer to Section V. A., General Venting
Guidelines.
1. In unconfined spaces (basement) in buildings of
conventional frame, brick, or stone construction,
infiltration normally is adequate to provide air for
ventilation.
2. BOILERISSUITABLEFORINSTALLATIONON
COMBUSTIBLEFLOOR.Boilercannotbeinstalled
on carpeting.
2. In confined spaces (closet, etc.) two permanent
openings, one near the top of the enclosure and one
near the bottom, shall be provided. Each opening
shall have a free area of not less than 1 sq. inch per
1000 BTUH of the total input of all appliances in
the space.
3. FORBASEMENTINSTALLATION,provideasolid
base, such as concrete, if floor is not level, or if water
may be encountered on floor around boiler.
4. PROVIDESERVICECLEARANCEofatleast24”at
front of boiler for servicing.
E. Do not install boiler where gasoline or other
flammable vapors or liquids, or sources of
hydrocarbons (i.e. bleaches, cleaners, chemicals,
sprays, paint removers, fabric softeners, etc.) are used
or stored.
5. For minimum clearances to combustible materials,
see Figure 2.
6
II. Unpack Boiler
4. Remove 4 hex nuts from bolts that attach hinges
and hinge spacers to left side of Tubesheet. Remove
4 hex head cap screws that attach hinges to door.
CAUTION
Do not drop boiler. Do not bump boiler jacket
against floor.
5. Attach 2 hinge brackets & spacers to Tubesheet and
2 hinge brackets to Door on right side of boiler. 3
Holes in each Hinge Bracket must line up with 3
matching holes in Spacer, Tubesheet or Door. See
Figure 3. Tighten hex nuts, bolts and screws by
hand only.
A. REMOVE CRATE
1. Remove all fasteners at crate skid.
2. Lift outside container and remove all other inside
protective spacers and bracing. Remove vacuum
relief valve and miscellaneous trim bag containing
safety/relief valve, and pipe fittings.
6. Replace door assembly. Hinge brackets attached to
door must rest on top of hinge brackets attached to
tubesheet. See Figure 4. Slide hinge pins through
hinges from top and install cotter pins. Close door
and install 5/16" - 18 x 3" long hex head cap
screws through flat washers and left side of door
and into tapped holes in tubesheet. Tighten all hex
nuts, bolts and screws. When door is installed
properly, it is parallel to Tubesheet when viewed
from top and sides.
B. REMOVAL OF BOILER FROM SKID
1. Boiler is secured to base with 2 bolts, 1 at left front
and 1 at right rear. Remove both bolts.
2. Tilt boiler, "walk" boiler backward, and set rear
legs down on floor. Tilt boiler backward, pull skid
forward and set front legs down on edge of skid.
Install close nipple, tee, and plug in return
coupling. See Section III and Figure 5. Point tee
toward permanent return location.
7. Bend sides of Jacket Wrapper down and attach 2
Jacket Straps to 4 slots at bottom of Jacket Wrapper
sides with sheet metal screws. Install Rear Jacket
Box with 4 sheet metal screws. See Figure 20.
3. Tilt boiler backward and remove skid. Be careful
not to damage Burner or Jacket.
8. Connect wiring harness to burner Junction Box and
install Honeywell R8184P Control, see Wiring
Diagram, Figure 15.
C. DETERMINE PROPER HINGE LOCATION FOR
BURNER SWING DOOR. Boiler is shipped with
hinges on left side. Approximately 12 inches are
required on the hinge side for burner clearance. If
there will be less than 12 inches from left side of boiler
to wall, move hinges to right side (refer to Paragraph
D).
Reconnect Swing Door Interlock.
E. INSTALL BOILER CONTROL.
1. Pull bulb and capillary tube out of hole in back of
control. Insert bulb in immersion well on top of
boiler and secure control with set screw in control.
D. HINGE LOCATION CHANGE (if required).
2. Secure flexible conduit to Jacket Wrapper side with
conduit clamp and sheet metal screw. Conduit
must be on same side of boiler as Swing Door
hinges.
1. Pull 2 halves of Burner Swing Door Interlock apart.
Swing Door Interlock is connected to R-W
terminals on R8184P Control. Lift Honeywell
R8184P Control off of Burner Junction Box and
disconnect wiring harness from burner.
F. MOVE BOILER TO PERMANENT POSITION by
sliding or walking.
2. Remove 8 sheet metal screws from jacket. Remove
rear jacket box and bend both sides of Jacket
Wrapper up, see Figure 20.
G. INSPECT FRONT AND REAR DOOR INSULATION
AND COMBUSTION CHAMBER LINER
3. Remove 2 (two) 5/16" - 18 x 3" long hex head cap
screws and flat washers from right side of door.
Remove 2 hairpin cotter pins and 2 hinge pins from
hinges on left side of door and remove Door
Assembly from boiler. Inspect Front and Rear Door
Insulation Pieces and Combustion Chamber Liner,
see Paragraph G.
1. OPEN BURNER SWING DOOR on front of boiler.
Use flashlight to inspect insulation secured to front
and rear doors. Inspect ceramic fiber blanket
secured to bottom of combustion chamber. Inspect
inner and outer door gaskets. Replace any damaged
pieces.
7
Figure 3: Proper Hinge Bracket Installation
Figure 4: Hinge Assembly
Figure 2: Minimum Clearances to Combustible Materials
8
III. Water Piping and Trim
refrigerated air, the boiler piping must be equipped
with flow control valves to prevent gravity
circulation of boiler water during the operation of the
cooling system.
3. If boiler is used with an Alliance Indirect-Fired
Domestic Water Heater, install the Alliance as a
separate heating zone. Refer to the Alliance
Installation, Operating, and Service Instructions for
additionalinformation.
A. Design and install boiler and system piping to
prevent oxygen contamination of boiler water.
4. Use a system bypass if the boiler is to be operated in
a system which has a large volume or excessive
radiation where low boiler water temperatures may
be encountered (i.e. converted gravity circulation
system, etc.).
There are many possible causes of oxygen
contamination such as:
The bypass should be the same size as the supply
and return lines with valves located in the bypass
and return line as illustrated in Figures 5 and 7 in
order to regulate water flow for maintenance of
higherboilerwatertemperature.
1. Addition of excessive make-up water as a result of
system leaks.
2. Absorption through open tanks and fittings.
3. Oxygen permeable materials in the distribution
system.
Set the by-pass and return valves to a half throttle
position to start. Operate boiler until the system
water temperature reaches its normal operating
range.
Adjust the valves to maintain 180°F to 200°F boiler
water temperature and greater than 120°F return
temperature. Adjust both valves simultaneously.
Closing the boiler return valve while opening the by-
pass valve will raise the boiler return temperature.
Opening the boiler return valve while closing the by-
pass valve will lower the boiler return temperature.
In order to insure long product life, oxygen sources
should be eliminated. This can be accomplished by
taking the following measures:
1. Repairing system leaks to eliminate the need for
addition of make-up water.
2. Eliminating open tanks from the system.
3. Eliminating and/or repairing fittings which allow
oxygen absorption.
4. Use of non-permeable materials in the distribution
system.
5. A hot water boiler installed above radiation level
must be provided with a low water cutoff device as
part of the installation.
5. Isolating the boiler from the system water by
installing a heat exchanger.
C. Install Safety Relief Valve. See Figures 5 and 7. Safety
Relief Valve must be installed with spindle in vertical
position. Installation of the relief valve must be
consistent with the ANSI/ASME Boiler and Pressure
VesselCode,SectionIV.
B. Connect System supply and return piping to boiler. See
Figures 5 and 7. Also consult I=B=R Installation and
PipingGuides. Maintainminimum½inchclearancefrom
hot water piping to combustible materials.
1. If this boiler is used in connection with refrigeration
systems, the boiler must be installed so that the
chilled medium is piped in parallel with the heating
boiler using appropriate valves to prevent the chilled
medium from entering the boiler, see Figure 6. Also
consult I=B=R Installation and Piping Guides.
WARNING
Safety (relief) valve discharge piping must
be piped near floor to eliminate potential of
severe burns. Do not pipe in any area where
freezing could occur. Do not install any shut-
off valves, plugs or caps.
2. If this boiler is connected to heating coils located in
air handling units where they may be exposed to
9
Figure 5: Recommended Boiler Piping for Zoning with Valves
isolation valve in boiler supply piping. (Note -
Terminate hose in five gallon bucket at a suitable
floor drain or outdoor area).
D. InstallDrainValveinreturnpiping. Seefigure5.
E. Oil, grease, and other foreign materials which
accumulate in new hot water boilers and a new or
reworked system should be boiled out, and then
thoroughly flushed. A qualified water treatment
chemical specialist should be consulted for
4. Starting with one circuit, open zone valve.
5. Open bib cock.
6. Open fill valve (Make-up water line should be
located directly above isolation valve in boiler
supply piping).
recommendations regarding appropriate chemical
compounds and concentrations which are compatible
with local environmental regulations.
7. Allow water to overflow from bucket until dis charge
from hose is bubble free for 30 seconds.
F. After the boiler and system have been cleaned and
flushed, and before refilling the entire system add
appropriate water treatment chemicals, if necessary, to
bring the pH between 7 and 11.
8. Open zone valve to the second zone to be purged,
then close the first. Repeat this step until all zones
have been purged, but always have one zone open.
At completion, open all zone valves.
G. Fill entire heating system with water and vent air
from system. Use the following procedure on a Series
Loop System equipped with zone valves. (See Figure
5).
9. Close bib cock, continue filling the system until
the pressure gauge reads 12 psi. Close fill valve.
(Note - If make-up water line is equipped with
pressure reducing valve, system will automatically
fill to 12 psi.
1. Close isolation valve in boiler supply piping.
2. Isolate all circuits by closing zone valves or
balancing valves.
10. Open isolation valve in boiler supply piping.
11. Remove hose from bib cock.
3. Attach a hose to bib cock located just below
10
Figure 6: Recommended Piping for Combination Heating & Cooling (Refrigeration) Systems
Figure 7: Recommended Boiler Piping for Zoning with Circulators
11
IV. Venting / Air Intake Piping
A. GeneralGuidelines
1. Vent system installation must be in accordance with
these instructions and applicable provisions of local
building codes. Contact local building or fire officials
about restrictions and installation inspection in your
area.
2. The LEDV Series is designed as a Direct Vent boiler.
In this configuration, all air for combustion is
supplied directly to the burner from outdoors and
flue gases are vented directly outdoors (through
wall). See Figures 10 and 11. The LEDV may be
side-wall vented with combustion air supplied from
indoors. This configuration may be used in
5. Vent Terminal Location (see Figure 8). Locate vent
terminal so vent pipe is short and direct. The vent
terminal must be located:
a. Not less than 12 inches above grade plus snow
accumulation.
installations where infiltration provides adequate air
for combustion and ventilation. Flue gases are still
vented directly outdoors (through wall).
b. Not less than 4 feet below, 4 feet horizontally, or
1 foot above any door, window, or gravity air
inlet.
3. Forminimumclearancestocombustiblematerials
refer to Figure 2.
c. Not less than 3 feet above any forced air inlet
located within 10 feet.
4. Maximum wall thickness that vent terminal may be
installed through is 10 inches.
d. Not less than 2 feet from an adjacent building.
e. Not less than 7 feet above a public walkway.
Figure 8: Vent Terminal Location
12
Components of this kit are listed in the Repair Parts
Section of this manual.
6. IntakeTerminalLocation(DirectVentonly)-Locate
Air Intake Terminal not less than 12 inches to the
left, right, or bottom of the vent terminal. Do not
locate air intake terminal above vent terminal. Intake
terminal must be at least 12 inches above grade plus
snow accumulation. See Figure 9.
7. The LEDV must be vented with 4" Z-Flex Direct
Oil™Vent. 20feetisthemaximumventlength
allowed. The vent pipe is available in 5, 10, 15, and
20 foot lengths. Table 1 lists vent part numbers.
B. VentInstallation(DirectVentandSide-WallVent)
1. Install Vent Terminal. See Figure 10.
a. After determining the location from previous
Section, cut an opening in the wall for the vent
terminal.
Table 1: Vent Pipe Part Numbers
4" Direct Oil™ Vent Pipe
•
Combustible wall: 8 inches diameter hole is
required to maintain a 1 inch clearance to
combustiblematerials.
Pipe Length
5 Ft.
Burnham Part No.
8113302
•
Non-combustible wall: 6½ inches diameter
hole is required.
10 Ft.
8113303
15 Ft.
8113304
b. Secure trim plate to outside wall.
c. Insert the vent terminal through the opening
until the stop bead rest against the trim plate.
20 Ft.
8113305
8. The vent system must be completed with the Direct
Oil™ Vent Kit, which is shipped with the boiler.
d. Slide the inside trim plate assembly (fitted with
gear clamp) onto the terminal pipe.
Figure 9: Intake Terminal Location
13
Figure 10: Vent Installation
Figure 11: Vent Connector, Un-Assembled
14
Figure 12: Vent Connector, Assembled
Figure 13: Air Intake Installation
15
e. Secure the inside trim plate to inside wall.
f. Tighten the gear clamp to the terminal pipe.
g. Seal all external joints with a weatherproof caulk.
2. Cut vent pipe to length with a hack saw.
a. All horizontal runs must rise at least ¼ inch per
foot toward vent terminal.
b. Avoid any sags or dips in vent pipe.
C. Air Intake Installation (Direct Vent only)
See Figure 13.
3. Install Vent Connector/Appliance Adaptor. See
Figures 11 and 12.
a. Apply a continuous bead of high temperature
adhesive/sealant (supplied with boiler) around
outside of corrugated pipe of vent connector.
b. Twist vent connector into end of vent pipe.
Turn the connector counter-clockwise until it is
engaged approximately 4 inches into the inner
vent pipe and the outer collar of the connector
overlaps the outside of the vent pipe.
1. General
a. Use 4 inch diameter single wall metal pipe and
fittings available at most heating distributors.
Maximum allowable air intake length is 40
equivalent feet. Each elbow is equal to 6
equivalent feet.
c. Tighten the gear clamp on the outer collar of the
connector.
d. Repeat steps a. through c. with the appliance
adapter.
4. Connect vent pipe to boiler.
b. Start at Burner. Work toward air intake terminal.
a. Apply a continuous bead of high temperature
adhesive/sealant (supplied with boiler) to inside
of appliance adapter (approximately ½ inch
from end).
c. Maintain minimum of ¼ inch per foot slope in
horizontal run to air intake terminal. Slope
down toward air intake terminal.
d. Seal all joints gas-tight, using silicone caulk or
self-adhesive aluminum tape.
b. Slip appliance adapter over boiler flue collar and
tighten gear clamp.
2. After determining location, cut a hole in the wall to
accept 4 inch air intake pipe.
5. Connect vent pipe to terminal.
a. Carefully slide insulation sleeve over vent
connector and vent pipe until gear clamp on
small end of connector can be accessed.
3. Remove the black plastic inlet cover from the right
side of the Beckett AFII burner.
4. Mount the vacuum relief valve tee assembly or 90°
elbow into the burner inlet ring. See Figure 13.
a. Secure with at least three (3) sheet metal screws
evenly spaced around the burner inlet ring.
b. Assemble the vacuum relief valve balance
weight onto the gate. Refer to the vacuum relief
valve manufacturer's instructions.
b. Apply a continuous bead of high temperature
adhesive/sealant (supplied with boiler) on inside
of cent connector (approximately ½ inch from
end).
c. Mount the vacuum relief valve into the tee and
fasten with a screw and nut in collar tabs. To
ensure proper operation, the gate must be level
across the pivot point and plumb. Refer to
vacuum relief valve manufacturer's instructions.
c. Clip connector over vent terminal until it is fully
engaged. Then tighten gear clamp.
d. Slide insulation sleeve over terminal connection
so that connector is completely covered.
5. Install remainder of air intake, securing each joint
with at least three (3) sheet metal screws evenly
spaced.
e. Secure each end of insulation sleeve with the
gear clamps provided.
6. Secure vent pipe in position with pipe straps.
16
D. AirIntakeInstallation (IndoorAirforCombustion)
1. Remove the black plastic inlet cover from the right
side of the Beckett AFII burner.
2. Attach the Air Intake Terminal directly to the burner
intakecollar.
3. DiscardtheVacuumReliefValve.
6. Install air intake terminal. See Figure 13.
Alternate to 1., 2. and 3.:
Keep the black plastic inlet cover in place and
discard the Air Intake Terminal and the Vacuum
ReliefValve.
7. Seal all external joints with weatherproof caulk.
17
V. Electrical and Sequence of Operations
and ignition transformer.
A. ELECTRICAL
b. After a 15 second pre-purge period, in which
time a draft is established in the flueways, the
oil valve is opened.
1. Install wiring and ground boiler in accordance with
requirements of authority having jurisdiction, or in
absence of such requirements the National
Electrical Code, ANSI/NFPA 70, and/or the CSA
C22.1 Electric Code.
c. If the burner ignites within 15 seconds from the
time the oil valve opens and the CAD cell senses
a flame, the burner will operate until the call for
heat is satisfied or the setting of the high limit is
reached.
2. A separate electrical circuit should be run from the
main electrical service with a fused disconnect
switch in the circuit.
d. A manual reset button is provided to reset the
safety switch after lockout.
3. Wiring should conform to Figure 15.
B. SEQUENCE OF OPERATIONS
e. When the call for heat ends, or the CAD cell
fails to sense a flame, the oil valve will close.
The combustion blower will continue to operate
for a postpurge period of approximately two (2)
minutes.
1. General. A call for heat by the thermostat
energizes the L8148A limit control which in turn
energizes the R8184P primary control to turn on
the burner. The circulator will operate as long as
there is a call for heat. If the call for heat is not
satisfied and the high limit setting is reached, the
circulator will continue to operate, and the burner
will stop until the high limit circuit is closed by a
drop in boiler water temperature.
4. CAD Cell.
The Beckett AFII burners used on the LEDV Series
are supplied with a C554A Cadmium Sulfide (cad
cell) Flame Detector to monitor the burner flame
and shut down the burner on ignition failure or on
flame failure during the run cycle. On either
failure, the manual reset button on the R8184P will
be tripped.
2. L8148A Combination Limit control.
The switching action within the L8148A control
has one setting, the high limit. The switching relay
is controlled by the low voltage room thermostat.
On a call for heat, the relay contacts close to
complete the line voltage circulator circuit and also
the burner circuit if the boiler water temperature is
below the high limit setting. The high limit switch
shuts off the burner if boiler water temperature
exceeds the high limit setting. See Figure 14.
3. R8184P Oil Primary Control.
The R8184P operates the oil burner motor, solenoid
oil valve, and the ignition transformer in response
to a call for heat from the L8148A limit control.
a. A call for heat will energize the burner motor
Figure 14: Control Differential
18
Figure 15: Schematic Wiring Diagram
VI. Oil Piping
A. General
TABLE 2: SINGLE-STAGE UNITS (3450 RPM)
TWO-PIPE SYSTEMS
1. Use flexible oil line(s) so that Swing Door can be
opened without disconnecting oil supply.
Maximum Length of Tubing
"H" + "R" (See Figure 16)
Lift "H"
2. A supply line fuel oil filter is recommended as a
minimum for all firing rates but a pleated paper
fuel oil filter is recommended for the lowest (.6
GPH) firing rate application to prevent nozzle
fouling.
(See Fig. 16)
3/8" OD
1/2" OD
Tubing (3 GPH)
Tubing (3 GPH)
0'
1'
84'
78'
73'
68'
63'
57'
52'
47'
42'
36'
31'
26'
21'
---
100'
100'
100'
100'
100'
100'
100'
100'
100'
100'
100'
100'
83'
3. Use Flared fittings only. Do not use compression
fittings.
2'
4. Use of a high efficiency micron oil filter (Garber or
equivalent) in addition to conventional filter is
highly recommended.
3'
4'
5'
B. Single-pipe Oil Lines.
6'
1. Standard burners are provided with single-stage
3450 rpm fuel units with the bypass plug removed
for single-pipe installations.
7'
8'
9'
2. The single-stage fuel unit may be installed single-
pipe with gravity feed or lift. Maximum allowable
lift is 8 feet. See Figure 16.
10'
11'
12'
13'
14'
62'
---
41'
Figure 16: Single-Pipe Installation
20
Figure 17: Two-Pipe Installation
C. Two-Pipe Oil Lines.
TABLE 3: TWO-STAGE UNITS (3450 RPM)
TWO-PIPE SYTEMS
1. For two-pipe systems where more lift is required,
the two-stage fuel unit is recommended. Table 2
(single-stage) and Table 3 (two-stage) show
allowable lift and lengths of 3/8-inch and ½-inch
OD tubing for both suction and return lines. Refer
to Figure 17.
Maximum Length of Tubing
"H" + "R" (See Figure)
Lift "H"
(See Fig. )
3/8" OD
1/2" OD
Tubing (3 GPH) Tubing (3 GPH)
0'
2'
93'
85'
77'
69'
60'
52'
44'
36'
27'
---
100'
100'
100'
100'
100'
100'
100'
100'
100'
76'
4'
6'
8'
10'
12'
14'
16'
18'
21
VII. System Start-up
WARNING
All boilers equipped with burner swing door have a potential hazard which can cause severe
property damage, personal injury or loss of life if ignored. Before opening swing door, turn off
service switch to boiler to prevent accidental firing of burner outside the combustion chamber.
Be sure to tighten swing door fastener completely when service is completed.
A. ALWAYSINSPECTINSTALLATIONBEFORE
F. BURNERSTART-UP
STARTING BURNER.
B. FILL HEATING SYSTEM WITH WATER. Refer to
Section III, G.
C. CHECK CONTROLS, WIRING AND BURNER to be
sure that all connections are tight and burner is rigid,
that all electrical connections have been completed and
fuses installed, and that oil tank is filled and oil lines
have been tested.
1. VERIFYburnersettings.
a. Refer to Table 4.
2. Open all shut-off valves in the oil supply line to the
burner.
D. LUBRICATION — Follow instruction on burner and
circulator label to lubricate, if oil lubricated. Most
motors currently used on residential type burners
employ permanently lubricated bearings and thus do
not require any field lubrication. Water lubricated
circulators do not need field lubrication.
3. Attach a plastic hose to fuel pump vent fitting and
provide a container to catch the oil.
4. REMOVE GAUGE PORT PLUG from fuel pump
and install pressure gauge.
Do not over-lubricate. This can cause as much trouble
as no lubrication at all.
5. REMOVE TEST PLUG IN FLUE COLLAR.
E. SET CONTROLS with burner service switch turned
6. Close the service switch to start the burner. If the
burner does not start immediately, check the
manual overload switch on the motor, if so
equipped, and the safety switch of the burner
primary control.
“OFF”.
1. SET ROOM THERMOSTAT about 10° above
room temperature.
2. PRESS RED RESET BUTTON on R8184P Oil
Primary Control and release.
3. Set high limit dial on L8148 at temperature to suit
requirements of installation.
TABLE 4: BECKETT AFII BURNER
Settings
Boiler
Model
Firing Rate
(GPH)
Air Tube
Burner
Delavan Nozzle
Air
Head
Pump Pressure
(PSIG)
Combination
(stop screw)
LEDV-1
LEDV-2
LEDV-3
0.60
1.00
1.25
AFII 85
AFII 150
AFII 150
HLX50HD
HLX50HE
HLX50HE
0.50 x 70°B
0.85 x 60°B
1.00 x 60°B
2.5
3.5
4.0
#2
#3
#5
140
140
140
22
Figure 18: Electrode / Head Setting
7. Bleed the fuel unit when the burner motor starts
with the microTEKDV boiler is the result of
extensive testing to obtain the best flame shape
and efficient combustion. Other brands of the
same spray angle and spray pattern may be used
but may not perform at the expected level of
CO2 and smoke. Nozzles are delicate and should
be protected from dirt and abuse. Nozzles are
mass-produced and can vary from sample to
sample. For all of those reasons a spare nozzle is
a desirable item for a serviceman to have.
rotating. To bleed, loosen the vent fitting (with
plastic hose attached) and catch the oil in an empty
container. Continue to bleed for 15 seconds after
oil is free of air bubbles. Tighten the vent fitting
when all the air is purged. NOTE: Bleeding might
not be necessary with a two pipe system. When
vent fitting is closed, burner flame should start
immediately.
8. ADJUST OIL PRESSURE
b. FLAME SHAPE — Looking into the
combustion chamber through the flame plug
hole, the flame should appear straight with no
sparklers rolling up toward the top of the
chamber. If the flame drags to the right or left,
sends sparklers upward or makes wet spots on
the rear door insulation piece, the nozzle should
be replaced. If the condition persists look for
fuel leaks, air leaks, water or dirt in the fuel as
described below.
a. Locate oil pressure adjusting screw and turn
screw to obtain 140 PSIG pressure.
b. DO NOT REMOVE PRESSURE GAUGE until
later.
9. ADJUST AIR SETTING on burner for a light
orange colored flame. 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
CO2 of 11.5 to 12.5%. These settings 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.
c. FUEL LEAKS — Any fuel leak between the
pump and the nozzle will be detrimental to good
combustion results. Look for wet surfaces in the
air tube, under the transformer, and around the
air inlet. Any such leaks should be repaired as
they may cause erratic burning of the fuel and in
the extreme case may become a fire hazard.
10. TURN "OFF" BURNER BY OPENING SERVICE
SWITCH. Remove pressure gauge. Install gauge
port plug and tighten. Re-start burner.
d. AIR LEAKS — Any such leaks should be
repaired, as they may cause erratic burning of
the fuel and in extreme cases may become a fire
hazard.
11. HINTS ON COMBUSTION
a. NOZZLES — Although the nozzle is a
relatively inexpensive device, its function is
critical to the successful operation of the oil
burner. The selection of the nozzle supplied
There are many possible causes of air leaks in
oil lines such as:
23
i. Fitting leaks due to mis-flared tubing or
is to bury the tank and lines deep enough to
keep the oil above 40°F.
damaged fitting.
ii. Fuel line leak due to crushed or bent tubing.
iii. Filter connection leaks.
i. HIGH ALTITUDE INSTALLATIONS — Air
settings must be increased at higher altitudes.
Use instruments and set for 11.5 to 12.5% CO2.
iv. Tank connection leaks.
There are various test kits available to trace
air leaks, such as electronic sight glasses.
Follow the manufacturers' instructions to
find air leaks.
j. START-UP NOISE — Late ignition is the cause
of start-up noises. If it occurs recheck for
electrode settings, flame shape, air or water in
the fuel lines.
The following actions can eliminate air leaks:
k. SHUT DOWN NOISE — If the flame runs out
of air before it runs out of fuel, an after burn
with noise may occur. That may be the result of
a faulty cut-off valve in the fuel pump, or it may
be air trapped in the nozzle line. It may take
several firing cycles for that air to be fully
vented through the nozzle. Water in the fuel or
poor flame shape can also cause shut down
noises.
i. Bleed pump as detailed in System Start-Up
Section of this manual.
ii. Replace flare fittings.
iii. Replace oil supply line.
iv. Repair oil filter leaks.
v. Replace or repair tank fittings.
e. GASKET LEAKS — If 11.5 to 12.5% CO2 with
a #1 smoke cannot be obtained in the breeching,
look for air leaks around the flue collar. Such air
leaks will cause a lower CO2 reading in the
breeching. The smaller the firing rate the
greater effect an air leak can have on CO2
readings.
f. DIRT — A fuel filter is a good investment.
Accidental accumulation of dirt in the fuel
system can clog the nozzle or nozzle strainer
and produce a poor spray pattern from the
nozzle. The smaller the firing rate, the smaller
the slots become in the nozzle and the more
prone to plugging it becomes with the same
amount of dirt.
G. TEST CONTROLS
g. WATER — Water in the fuel in large amounts
will stall the fuel pump. Water in the fuel in
smaller amounts will cause excessive wear on
the pump, but more importantly water doesn’t
burn. It chills the flame and causes smoke and
unburned fuel to pass out of the combustion
chamber and clog the flueways of the boiler.
WARNING
Before installation of the boiler is considered
complete, the operation of the boiler controls
should be checked, particularly the primary
control and high limit control.
h. COLD OIL — If the oil temperature
1. CHECK THERMOSTAT OPERATION. Raise and
lower thermostat setting as required to start and
stop burner.
approaching the fuel pump is 40°F or lower
poor combustion or delayed ignition may result.
Cold oil is harder to atomize at the nozzle.
Thus, the spray droplets get larger and the flame
shape gets longer. An outside fuel tank that is
above grade or has fuel lines in a shallow bury is
a good candidate for cold oil. The best solution
2. VERIFY PRIMARY CONTROL SAFETY
FEATURES using procedures outlined in
Instructions furnished with control (See back of
Control Cover) or Instructions as follows:
24
temperature. Burner should start.
FOR HEATING SERVICEMAN ONLY
a. Simulate flame failure:
d. Adjust thermostat to lowest setting. Adjust limit
to desired setting.
•
Follow the starting procedure to turn on the
burner.
Close the hand valve in the oil supply line.
4. CHECK LOW WATER CUTOFF (if so equipped).
a. Adjust thermostat to highest setting.
•
•
Safety switch should lock out in
b. With boiler operating, open drain valve and
slowly drain boiler.
approximately 15 seconds. Ignition should
stop and oil valve should close. Blower will
stop after postpurge period.
c. Burner should stop when water level drops
below low water cutoff probe. Verify limit,
thermostat or other controls have not shut off
boiler.
•
Push red reset button to reset safety switch.
b. Simulate ignition failure:
•
Follow the starting procedure to turn on the
burner, but do not open the oil supply hand
valve.
d. Adjust thermostat to lowest setting. Refill
boiler.
•
Safety switch should lock out in
approximately 15 seconds. Ignition and
motor should stop and oil valve should
close.
H. Boiler is now ready to be put into service.
•
Push red reset button to reset safety switch.
c. Simulate power failure:
•
•
Follow the starting procedure to turn on the
burner.
With the burner running, turn off the power
to the system by tripping the circuit breaker
or removing the fuse.
A leaky system will increase the volume of make-up
water supplied to the boiler which can significantly
shorten the life of the boiler. Entrained in make-up
water are dissolved minerals and oxygen. When the
fresh, cool make-up water is heated in the boiler the
minerals fall out as sediment and the oxygen escapes
as a gas. Both can result in reduced boiler life. The
accumulation of sediment can eventually isolate the
water from contacting the steel. When this happens
the steel in that area gets extremely hot and eventually
cracks. The presence of free oxygen in the boiler
creates a corrosive atmosphere which, if the concen-
tration becomes high enough, can corrode the steel
through from the inside. Since neither of these failure
types are the result of a manufacturing defect the
warranty does not apply. Clearly it is in everyone’s
best interest to prevent this type of failure. The
maintenance of system integrity is the best method to
achieve this.
•
•
Burner should stop.
Restore power. Burner should start.
d. If system does not operate as described, go to the
TROUBLESHOOTING AND MAINTENANCE
section.
3. VERIFY HIGH LIMIT OPERATION.
a. Adjust thermostat to highest setting.
b. Observe temperature gauge. When temperature
is indicated, adjust limit to setting below
observed temperature. Burner should stop.
c. Adjust limit to setting above observed
25
Section VIII: Service and Cleaning
WARNING
All boiler service and cleaning must be completed with burner service switch turned off. Boilers
equipped with burner swing door have a potential hazard which can cause severe property
damage, personal injury or loss of life if ignored. Before opening swing door, turn off service
switch to boiler to prevent accidental firing of burner outside the combustion chamber. Be sure to
tighten swing door fasteners completely when service is completed.
piece. Inspect front and rear door insulation
pieces, front door gaskets and combustion
chamber liner for damage. Replace any damaged
pieces.
4. CLOSE BOILER
CAUTION: Do not start burner unless burner swing
door is securely closed. Close door, install fasteners,
and tighten securely. Door should be parallel to
tubesheet when viewed from top and sides.
Reconnect two halves of Swing Door Interlock.
C. Vent/Air Intake System. Inspect for obstructions,
soot accumulation, proper support, and deterioration of
pipe, fittings, and joints.
A. General. Inspection, service and cleaning should be
conducted annually. Turn off electric power and close
oil supply valve while conducting service or
maintenance.
1. Inspect inside of vent pipe.
B. Firetubes and Combustion Chamber.
a. Disconnect appliance adapter from boiler flue
collar.
1. CLEAN THE FIRETUBES
b. Remove any obstructions and clean with a wire
brush as required.
a. For access to fireside of boiler, pull two halves
of Burner Swing Door Interlock wiring harness
apart, remove fasteners holding door closed and
open swing door.
c. Reconnect appliance adapter to boiler flue collar
as detailed in Section IV: Venting/Air Intake
Piping.
b. Prior to cleaning boiler, lay a protective cloth or
plastic over combustion chamber liner.
2. Clean terminal screens. Terminals must be free of
obstruction, undamaged, with screens securely in
place.
c. Using a 1 1/2" diameter wire brush (30"
handle), clean firetubes. Measure 15" from end
of brush opposite handle, and mark handle. DO
NOT allow this mark to go past front end of
firetube during cleaning, or brush will hit rear
door insulation piece.
3. Terminal and wall thimbles (if used) must be
weather-tight.
4. Pipe must be full round shape, and show no damage
from impact or excessive temperature.
2. CLEAN THE COMBUSTION CHAMBER
5. Pipe must be supported at minimum 5 foot intervals
and must not sag.
Using wire or fiber bristle brush, clean inside of
combustion chamber. DO NOT let brush hit rear
door insulation piece or combustion chamber liner.
6. All vent joints must be secure and watertight.
7. All air intake joints must be secure and airtight.
3. AFTER CLEANING
a. Vacuum debris inside bottom of rear door,
remove protective cloth, and vacuum remaining
fireside of boiler as necessary. BE CAREFUL
not to damage liner or rear door insulation
D. Burner.
1. Replace the oil supply line filter.
26
an external float type low water cutoff is on the
boiler, the blow off valve should be opened once
a month (use greater frequency where conditions
warrant), to flush out the sediment chamber so
the device will be free to function properly.
2. Remove and clean the pump strainer (if applicable).
3. Replace the nozzle with an equivalent nozzle. See
Table 4.
4. Clean and inspect the electrodes for damage,
replacing any that are cracked or chipped.
b. Annual Service. Float type low water cutoffs
should be dismantled annually by qualified
personnel, to the extent necessary to insure
freedom from obstructions and proper
5. Clean the combustion head of all lint and soot.
6. Inspect the transformer cables and connectors.
7. Remove and clean the cad cell.
functioning of the working parts. Inspect
connecting lines to boiler for accumulation of
mud, scale, etc., and clean as required.
Examine all visible wiring for brittle or worn
insulation and make sure electrical contacts are
clean and that they function properly. Give
special attention to solder joints on bellows and
float when this type of control is used. Check
float for evidence of collapse and check mercury
bulb (where applicable) for mercury separation
or discoloration.
8. Clean the blower wheel and the air control of any
lint.
9. Check all wiring for secure connections or
insulation breaks.
10.Re-adjust the burner as detailed in Section VII:
System Start-up, Paragraph F.
E. Controls. Test Controls for proper operation as
2. Probe Type (Annual Service). Probe type LWCO
should be removed once a year, examined and
cleaned of any dirt accumulations to assure proper
operations. Do not attempt to repair mechanisms in
the field. Complete replacement mechanisms,
including necessary gaskets and installation
detailed in Section VII: System Start-up, Paragraph G.
F. Low water cutoff (if so equipped).
1. Float Type
instructions, are available from the manufacturer.
a. Monthly Blowoff. During the heating season, if
27
Service Notes
28
IX. Repair Parts
All LEDV Series Repair Parts may be obtained through your local Burnham Wholesale Distributor. Should
you require assistance in locating a Burnham Distributor in your area, or have questions regarding the avail-
ability of Burnham products or repair parts, please contact your Burnham Regional Sales Office as listed
below.
Burnham Corporation Regional Offices
A. Burnham Corporation - Central & Western Regions C. Burnham Corporation - Metropolitan Region
P.O. Box 3079
P.O. Box 3079
Lancaster, PA 17604-3079
Phone: (717) 481-8400
FAX: (717) 481-8408
Lancaster, PA 17604-3079
Phone: (717) 481-8400
FAX: (717) 481-8409
B. Burnham Sales Corporation - Northeast Region
19-27 Mystic Avenue
D. Burnham Corporation - Mid-Atlantic Region
P.O. Box 3079
Somerville, MA 02145
Phone: (617) 625-9735
Lancaster, PA 17604-3079
Phone: (717) 481-8400
FAX: (617) 625-9736
FAX: (717) 481-8409
29
Figure 19: LEDV Boiler Trim & Controls
30
Figure 20: LEDV Boiler Jacket & Insulation
31
Figure 21: LEDV Bare Boiler Assembly
33
Figure 23: Beckett AFII Oil Burner Repair Part
For replacement oil burner parts, contact your wholesaler or the burner manufacturer: R.W. Beckett Co., P.O. Box 1289, Elyria, OH 44036
(216) 327-1060 or (800) OIL BURN(645-2876)
BECKETT AFII BURNER REPLACEMENT PARTS
LEDV1
LEDV2
Beckett Part Number
BCB5407
LEDV3
Part Description
Complete Burner (without Primary Control)
Air Tube Combination
Air Tube Screws
BCB5406
HLX50HD
BCB5408
HLX50HE
4352
Blower Wheel
21439
21438
Coupling (Motor to Pump)
Electrodes (Replacement Kit)
Escutcheon Plate
21437
51484U
31623
Stop Screw
3166502
3166503
5394
3166505
Fuel Line
Fuel Pump (Single Stage, with Solenoid
Valve)
21757
Fuel Pump (Two Stage, with Solenoid
Valve)
2583
Gasket, Flange
Head Assembly (AFII 6 Slot)
Hole Plug
31658
51671
51584
51672
51476
2139
51485
3666
Inlet Air Scoop
Splined Nut
Main Housing Assembly
Motor
21444
213
Nozzle Adapter
Nozzle Line Heater
Rear Access Door
Transformer
51621
51424GY
51402
4 x 4 Electrical Box
31613BK
35
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