Beckett CG10(A) Specifications

COMMERCIAL PRODUCTS
Fire, Explosion and Asphyxiation Hazards
Failure to follow these instructions exactly could lead to fire or explosion and result in
death, severe personal injury or property damage.
1. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
2. What to do if you smell gas:
- Do not try to light any appliance.
- Do not touch any electrical switch.
- Do not use any phone in your building.
- Immediately call your gas supplier from a telephone outside the building.
- Follow the gas supplier’s instructions.
- Call the fire department if you cannot contact your supplier.
3. Installation and service must be performed by a qualified installer, service agency, or the gas supplier.
Contents
General Information .................................................... 3
Hazard Definitions: ........................................................................ 3
Owner’s Responsibility: ................................................................. 3
Professional Installer’s Responsibility: .......................................... 4
Specifications ................................................................................ 4
Pre-installation Checklist ........................................... 5
Indoor Installation .......................................................................... 5
Combustion air supply................................................................... 5
Clearances .................................................................................... 6
Fuel gas supply ............................................................................. 6
Flue vent system ........................................................................... 6
Electrical supply ............................................................................ 6
Verify burner components ............................................................. 6
Verify firing input range ................................................................. 6
Verify burner air tube assembly..................................................... 7
Mount the Burner......................................................... 9
Connect Gas Piping .................................................... 9
Gas Trains ................................................................................... 10
Wire the Burner.......................................................... 12
Sequence of Operation ............................................. 13
Prepare the Burner for Start-up ............................... 13
Start-up checklist......................................................................... 14
Start the Burner ........................................................ 16
Burner start procedure ............................................................... 16
Verify input firing rate .................................................................. 16
Check operation and safety controls ........................................... 20
Use test instruments to set combustion: ..................................... 21
Recommended combustion test sequence: ................................ 21
Maintenance and Service.......................................... 22
Annual maintenance .................................................................. 22
Propane Restrictor Description .................................................. 25
Installation .................................................................................. 25
For the OPERATOR .................................................................... 27
Replacement Parts .................................................... 28
Burner Configurations .............................................. 29
Limited Warranty Information .................................. 32
2
Section: General Information
General Information
Hazard Definitions:
Indicates a hazardous
situation which, if not
avoided, will result in death or serious injury.
Indicates a hazardous
situation, which, if not
avoided, could result in death, or serious
injury.
Used with the safety
alert symbol, indicates a
hazardous situation, which, if not avoided,
may result in minor or moderate injury.
Within the boundaries of the hazard warning, there will
be information presented describing consequences if the
warning is not headed and instructions on how to avoid
the hazard.
Used to address practices not
related to personal injury.
To the Owner:
Thank you for purchasing a Beckett CG10
burner for use with your heating appliance. Please
pay attention to the Safety Warnings contained
within this instruction manual. Keep this manual for
your records and provide it to your qualified service
agency for use in professionally setting up and
maintaining your burner.
Your CG10 burner will provide years of efficient
operation if it is professionally installed and
maintained by a qualified service technician. If
at any time the burner does not appear to be
operating properly, immediately contact your
qualified service agency for consultation.
We recommend annual inspection/service of
your gas heating system by a qualified service
agency.
Owner’s Responsibility:
Follow these instructions
exactly.
Failure to follow these instructions,
misuse, or incorrect adjustment of
the burner could lead to equipment
malfunction and result in asphyxiation,
explosion or fire.
Contact a professional, qualified service agency for the
installation, adjustment and service of your gas burning
system. Thereafter, have your equipment adjusted and
inspected at least annually to ensure reliable operation.
This work requires technical training, trade experience,
licensing or certification in some states and the proper
use of special combustion test instruments.
Please carefully read and comply with the following
instructions:
y See the front cover for ‘What to do if you smell gas’.
y Never store or use gasoline or other flammable
liquids or vapors near this burner or appliance.
y Never attempt to burn garbage or refuse in this
appliance.
y Never attempt to light the burner/appliance by
throwing burning material into the appliance.
y Never attempt to burn any fuel not specified and
approved for use in this burner.
y Never restrict the air inlet openings to the burner or
the combustion air ventilation openings in the room.
CG10 Burner Manual
3
Section: General Information
Professional Installer’s Responsibility:
Follow these instructions
exactly.
Failure to follow these instructions could
lead to equipment malfunction and result
in asphyxiation, explosion or fire.
Specifications
Table 1 – Burner Specifications
Input firing range
300 to 1200 MBh
Fuel
Natural gas - 0.6 specific gravity typical
Gas train
Standard: UL listed/CSD-1 Configuration
Options: IRI and FM
Manifold pressure 1.0 to 4.6 inches W.C. typical
y Please read all instructions before proceeding.
Follow all instructions completely.
Firing mode
On/Off or On/Off with Low Fire Start
Flame safeguard
RM7895A Standard (Options available)
y This equipment must be installed, adjusted and
started by a qualified service agency that is licensed
and experienced with all applicable codes and
ordinances and responsible for the installation and
commissioning of the equipment.
Flame detection
Standard: Flame rod rectification
Optional: Ultraviolet scanner
Air proving switch
Standard
Gas pressure
switches
Standard high and low
y The installation must comply with all local codes and
ordinances having jurisdiction and the latest edition
of the National Fuel Gas Code ANSI Z223.1 (NFPA
54) and CAN1-B149.1 in Canada.
Ignition
Direct spark main flame
Motor
Standard: 1/3 HP; 3450 RPM; 120
volt/60 hz, single phase
Optional motor: 50 or 60 hz (see notice
for 50 hz), 240 volt single phase
Concealed damage – If you
discover damage to the burner or
controls during unpacking, notify the carrier at once and
file the appropriate claim forms.
High altitude installations – Accepted industry practice
requires no derate of burner capacity up to 2000 feet
above sea level. For altitudes higher than 2000 feet,
derate the burner capacity 2% for each 1000 feet above
the 2000 feet.
50 Hz motors – The burner ratings, air settings and other
adjustments are based on 60 hz motors at 3450 rpm.
Derate firing capacity 20% when using 50 hz motors.
Consult factory for specific application data.
4
Weight
55 lbs.
Dimensions
Refer to Figure 5.
Special Requirements:
When contacting Beckett for
service information — Please record the burner serial
number (and have available when calling or writing). You
will find the serial number on the silver label located on
the left rear of the burner. Refer to Figure 1.
Agency Approvals
Underwriters Laboritories
Certified by C-UL
Accepted by N.Y.C.M.E.A.
Other approvals may be available
and must be specified at time of
order.
Section: Pre-installation Checklist
Figure 1. Burner Nameplate
General Model Information
R.W. Beckett
Construction and Setting Data
Serial Number,
Including Date Code
R.W. Beckett Specification
Number and Revision
Rating Information
Approval Agency
Symbols
Boiler Manufacturer and Model,
When Applicable
Primary Group
and Fuel
Additional Codes
Pre-installation Checklist
Combustion air supply
Indoor Installation
Adequate Combustion and
Ventilation Air Supply
Required
Failure to provide adequate air supply could
seriously affect the burner performance and result in
damage to the equipment and emission of poisonous
carbon monoxide gas.
Protect against Dust and
Moisture
Wet or dusty environments could lead to blocked
air passages, corrosion damage to components,
impaired combustion performance and result in
asphyxiation, explosion or fire.
y This burner is designed for clean, dry installations.
y The burner cannot properly burn the fuel if it is not
supplied with a reliable combustion air source.
y Electrical controls are not protected against rain or
sprayed liquids.
y Follow the guidelines in the latest edition of National
Fuel Gas Code ANSI Z223.1 (NFPA 54) and
CAN1-B149.1 regarding providing adequate air for
combustion and ventilation.
y Keep the installation clear of dust, dirt, corrosive
vapors, and moisture.
y For appliance/burner units in confined spaces, the
room must have an air opening near the top of the
room, plus one near the floor, each with a free area
at least one square inch per 1000 Btu/hr input for all
fuel-burning equipment in the room.
CG10 Burner Manual
y Protective covers and more frequent maintenance
may be required.
If there is risk of the space being under negative
pressure, or of exhaust fans or other devices depleting
available air for combustion and ventilation, the
appliance/burner should be installed in an isolated room
provided with outside combustion air.
5
Section: Pre-installation Checklist
○
Test For Gas Pipe Leaks
Leaking gas could result in asphyxiation, explosion,
or fire hazard.
y The gas supply piping must be absolutely leak-free.
y Pressure test the gas piping with air that is at least
three times greater than the gas pressure being
used.
y Verify that there are no leaks before proceeding.
Clearances
With the burner installed in the appliance, there must
be adequate space in front of and on the sides of the
burner to allow access and operation. Verify that the
clearance dimensions comply with local codes and with
the appliance manufacturer’s recommendations.
Fuel gas supply
Flange mounting arrangement (Includes hightemperature gasket and /or fiber rope for pressure
firing).
Verify firing input range
Refer to appliance manufacturer’s instructions (if
available) for the firing input range. Otherwise the
maximum recommended firing range for the burner
depends on the length and width of the firing chamber
and the distance from the burner center to the chamber
floor. Verify that the chamber dimensions are at least as
large as the minimum values given in Figure 2. If the
appliance dimensions are smaller, reduce the firing rate
accordingly.
Dimensions shown are for cast
iron sectional boilers with uptakes
between sections. For minimum dimensions of other
furnace types consult R.W. Beckett Corporation.
Figure 2. Minimum Combustion Chamber Dimensions
Verify that the gas supply piping complies with all
applicable local codes and the latest edition of the
National Fuel Gas Code ANSI Z223.1 (NFPA 54).
Insure that the supply gas pipe size is capable of
providing at least the minimum pressure required to the
burner gas train inlet at the burner’s full capacity rating.
Refer to Table 1.
Flue vent system
The flue gas vent system must be in good condition
and must comply with National Fuel Gas Code ANSI
Z223.1 (NFPA 54) and all other applicable codes having
jurisdiction for vent construction, capacity, and sizing.
Electrical supply
Check the nameplate on the burner to verify that the
power connections available are correct for the burner.
Refer to Figure 1. All power must be supplied through
fused disconnect switches and comply with the latest
edition of National Electric Code NFPA 70 (Canada CSA
C22.1) and all other local or applicable codes.
Verify burner components
○
6
Burner model can be checked from burner carton or
rating label on burner.
Minimum Combustion
Chamber Dimensions (inches)
Input
Firing
Rate in
MBH
Length
‘L’
Width
‘W’
Height
‘H’
Burner Head
Centerline to
floor ‘A’
300-400
18
12
12
6
400-600
22
14
14
7
600-900
26
16
16
8
900-1200
30
18
18
9
Section: Pre-installation Checklist
Verify burner air tube assembly
○
○
○
The information in this section may be disregarded if
the burner supplied by the appliance manufacturer is
a matched component.
Maximum firing capacity depends on the furnace
pressure. Use the charts shown in Figure 3 and
Figure 4, to verify the correct burner configuration for
the input rate.
Refer to Figure 5 to verify the air tube assembly
length and mounting insertion dimensions.
Flames are shaped by their
furnaces and by its flue locations.
Increased height and width can decrease the length
requirement. When shaping is too severe flames
impinge on the walls. Impingement causes CO and
carbon deposits and may damage the wall. Maintaining
these minimum dimensions should prevent impingement,
but smaller furnaces may be acceptable depending
upon the results of applications testing. We recommend
factory testing of all new burner/furnace combinations by
the furnace manufacturer and/or R. W. Beckett Corp.
The volume of the furnace
also influences the combustion
process. R. W. Beckett Corp. recommends at least 1
cubic foot of furnace volume for each 150,000 BTU/Hr of
firing rate.
Maximum Capacity, MBH
Figure 3. Maximum Capacity (at 3% O2) vs Furnace Pressure - Step Spud Configuration
1400
1300
1200
1100
1000
900
800
700
600
500
400
CG10.6S
CG10.5S
CG10.4S
CG10.3S
CG10.2S
CG10.1S
0
0.2
0.4
0.6
0.8
1
Furnace Pressure, In. W.C.
Figure 4. Maximum Capacity (at 3% O2) vs Furnace Pressure - Swirler Head Configuration
1300
Maximum Capacity, MBH
1200
1100
CG10.6
1000
CG10.5
900
CG10.4
800
CG10.3
700
CG10.2
600
CG10.1
500
400
300
0
0.2
0.4
0.6
0.8
1
Furnace Pressure, In. WC
CG10 Burner Manual
7
Section: Pre-installation Checklist
Figure 5. Burner Dimensions
Burner Model
Airtube
10.1 - 10.3, 10.1S - 10.3S
10.4 - 10.6, 10.4S - 10.6S
8
Dim. A
Dim. B
O.D.
51927
25.0”
11.7”
4.43”
51961
25.7”
12.5”
4.61”
Section: Mount the Burner & Connect Gas Piping
Mount the Burner
Figure 6. Custom Mounting Plate
Mount the burner to the appliance. The burner specified
for packaged equipment will have a flange welded for the
required insertion. Follow the appliance manufacturer’s
instructions for mounting.
In the absence of instructions, or for retrofits, make sure
that the air tube insertion dimension, measured along
the side of the air tube from the welded flange to the end
of burner air tube, is correct.
C
B
Protect the Air Tube from
Overheating
Overheating could cause damage to the air tube and
other combustion components leading to equipment
malfunction and impaired combustion performance.
y The end of the air tube must not extend into the
combustion chamber unprotected unless it has
been factory-tested and specified by the appliance
manufacturer.
A
Key:
A
Burner mouning flange
B
Gasket
C
Appliance mounting plate
y The end of the air tube should be set back ¼”
from flush with the refractory inside wall to prevent
damage from overheating.
Connect Gas Piping
y Refer to the instructions outlined in this section for
methods of additional protection.
All gas piping installation must
comply with the latest edition of
the National Fuel Gas Code ANSI Z223.1 (NFPA 54) and
other applicable local codes.
If this dimension cannot be achieved, protect the end
of the air tube by installing a suitable ceramic refractory
material such as a refractory mill board capable of
withstanding at least 2300°F. The entry hole diameter
in the appliance should be 1” larger than the air tube
to facilitate ease of installation and provide adequate
protection.
Referring to Figure 6, if the front plate opening (C) in
the boiler is larger than the burner flange bolt circle, then
a custom mounting plate (A) of at least 1/4” thickness
must be used with a suitable high-temperature refractory
material anchored on the fire-side. A suitable hightemperature gasket (B) must be used for an effective
seal.
○
○
Attach the plate and gasket to the boiler and tighten
the mounting nuts or bolts securely.
Verify that the air tube is ¼” back from flush (see
Figure 2), and there is nothing blocking the flame
zone that could cause flame impingement.
The gas supply system must be sized to deliver at
least the minimum required pressure to the gas train
inlet. Contact your local gas utility for verification of
gas pressures, allowable pressure drops, and any local
piping code requirements. Refer to Figure 7 for an
illustration of a gas piping layout and refer to Table 1 for
pipe sizing.
Do Not Use Teflon Tape on
Gas Piping
Damage to gas valve cutoff seals and valve bodies
could cause gas leaks and result in asphyxiation,
explosion or fire.
y Pieces of tape can be cut loose during installation
and lodge in gas valves causing cutoff seal
problems.
y Teflon tape ‘lubricates’ pipe threads, allowing iron
pipes to penetrate too deeply into aluminum valve
bodies causing distortion and leakage.
y Use only pipe sealant compounds that are resistant
to the gas being used.
CG10 Burner Manual
9
Section: Connect Gas Piping
Figure 7. Typical Gas Piping Layout
ABBREV.
HGPS
LGPS
MSC
MLTC
PG
S
SSOV1
TC
U
2PRV
LGPS
METER
ITEM DESCRIPTION
HIGH GAS PRESSURE SWITCH
LOW GAS PRESSURE SWITCH
MAIN SHUTOFF COCK
MAIN LEAK TEST COCK
PRESSURE GAUGE
STRAINER
SAFETY SHUTOFF VALVE #1
TEST COCK
UNION
TWO POSITION REGULATING VALVE
HGPS
BURNER
REGULATOR PG
U
DRIP LEG
S
MSC
U
SSOV1
TC
2PRV
TC
MLTC
U
TC
(IF USED)
FACILITY PIPING
GAS UTILITY PIPING
GAS TRAIN
BURNER
Table 1. Gas supply piping capacity
Schedule 40 metallic pipe with 0.50 psi or less inlet pressure and 0.30” W.C. pressure drop
Maximum capacity in cubic feet of gas per hour (CFH). Natural gas with 0.60 specific gravity. Pipe size (inches) IPS
Pipe Length (ft.)
0.75”
1.0”
1.25”
1.5”
2.0”
2.5”
3.0”
4.0”
10
278
520
1050
1600
3050
4800
8500
17500
20
190
350
730
1100
2100
3300
5900
12000
30
152
285
590
800
1650
2700
4700
9700
40
130
245
500
760
1450
2300
4100
8300
50
115
215
440
670
1270
2000
3600
7400
60
105
195
400
610
1150
1850
3250
6800
70
96
180
370
560
1050
1700
3000
6200
80
90
170
350
530
990
1600
2800
5800
90
84
160
320
490
930
1500
2600
5400
100
79
150
305
460
870
1400
2500
5100
125
72
130
275
410
780
1250
2200
4500
150
64
120
250
380
710
1130
2000
4100
175
59
110
225
350
650
1050
1850
3800
200
55
100
210
320
610
980
1700
3500
Install a Drip Leg in Gas
Supply Piping
Foreign matter could lodge in gas valve cutoff seals,
resulting in gas leak-through, explosion or fire.
Install a full-size drip leg or dirt pocket in the piping directly
ahead of the main shutoff valve to capture foreign matter.
Gas Trains
Gas Leaks and Exposion
Hazards
Provide Over-pressure Protection
CSD-1 requires that if gas pressure entering the
building exceeds the rating of any gas train component
an overpressure protection device must be installed.
10
Standard – An Underwriters Laboratories (UL) listed
gas train is standard for the CG10 gas burner. This
configuration also meets CSD-1 requirements. See
Figure 8 for typical component layout.
Propane (LP) – When the correct propane restrictor
is added to a burner’s gas pipe assembly it changes
the burner’s gas pressure drop so that the propane
pressure drop is equal to the natural gas pressure drop
of the same BTU firing rate. That is why the Manifold
to Furnace Pressure Drop curves of Figures 12 and
13 are correct for both propane and natural gas. That
is also why a gas train adjusted for the burner’s natural
gas requirements will be correctly adjusted for its
propane requirements. R. W. Beckett provides the same
pressure regulating safety shutoff valve in the gas train
(usually a Honeywell V4944B) for both natural gas and
propane. The valve is marked for natural gas due to
its primary usage in a pressure range normally used
Section: Connect Gas Piping
by natural gas appliances. It is safe and effective for
propane usage in this design application.
Optional – Gas trains for IRI and FM are available and
must be specified when ordering a burner.
Verify – Verify that the train components are not
damaged and all piping and fittings are clean inside and
out. The gas train is normally shipped as components
and must be assembled and installed at the site.
Vent lines – Install vent lines to any gas valve component
that requires atmospheric air pressure to balance a
diaphragm. Vent lines must be run to the outdoors, with
the termination point away from fresh air intakes and
windows. The terminal opening must be fitted with a wire
mesh screen to block insects and other contaminants
from entering the vent and must be mounted in such a
position that water, ice, dirt, or any other foreign matter
cannot infiltrate and block the vent piping. Make sure the
final assembly is anchored securely.
Figure 8. UL gas train configuration
LGPS
MSC
U
TC
SSOV1
C6097A
LGPS
TC
PRSSOV
HGPS
U
MLTC
C6097B
HGPS
TC
TC
TP
TP
BURNER
MSC
U
ABBREV.
HGPS
LGPS
MSC
MLTC
PRSSOV
SSOV1
TC
TP
U
SSOV1
PRSSOV
ITEM DESCRIPTION
HIGH GAS PRESSURE SWITCH
LOW GAS PRESSURE SWITCH
MAIN SHUTOFF COCK
MAIN LEAK TEST COCK
PRESSURE REGULATING
SAFETY SHUTOFF VALVE
SAFETY SHUTOFF VALVE #1
TEST COCK
TEST PORT
UNION
MLTC
U
When pressure
reducing safety
shutoff valves are used, the distance
from the final shutoff valve (PRSSOV
in Fig. 8) to the burner manifold must
be kept to a minimum for good light-off
reliability. R.W. Beckett recommends the
following maximum lengths:
Pipe Size
1”
1-1/4”
1-1/2”
2”
Max. Length
12”
15”
18”
24”
If a Normally Open Vent Valve (not
shown) is used, the distance between
the SSOVs must be kept to a minimum
using the shortest practical nipples.
CG10 Burner Manual
11
Section: Wire the Burner
Wire the Burner
Electrical Shock Hazard
Install the burner and all wiring in accordance with the
National Electric Code ANSI/NFPA 70 (Canada CSA
C22.1) and all applicable codes and requirements.
Wire the burner in compliance with all instructions and
diagrams provided by the appliance manufacturer.
Verify operation of all controls in accordance with the
appliance manufacturer’s guidelines.
Electrical shock can cause severe
personal injury or death.
y Disconnect electrical power before installing or
servicing the burner.
See Figure 9 for a typical wiring
diagram, with the RM7897A flame
safeguard control, for reference purposes only. Check
the literature that was packaged with the burner for the
primary control manufacturer’s instructions and the exact
wiring diagram for your specific burner.
Keep Service Access
Covers Securely Installed
These covers must be securely in place to prevent
electrical shock, damage from external elements,
and protect against injury from moving parts.
y Provide ground wiring to the burner, metal control
enclosures and accessories. (This may also be
required to aid proper control system operation.)
y Perform all wiring in compliance with the National
Electrical Code ANSI/NFPA 70 (Canada CSA C22.1)
Do Not Bypass Safety
Controls
Tampering with, or bypassing safety controls
could lead to equipment malfunction and result in
asphyxiation, explosion or fire.
y Safety controls are designed and installed to provide
protection.
y All covers or service access plates must be in place
at all times except during maintenance and service.
y Do NOT tamper with or bypass any safety control.
y This applies to all controls, panels, enclosures,
switches, and guards or any component with a cover
as part of its design.
y If a safety control is not functioning properly, shut
off all main electrical power and gas supply to
the burner and call a qualified service agency
immediately.
Figure 9. Typical wiring using Model RM7897A (for reference only)
LINE VOLTAGE SERVICE 120v 60Hz
FROM FUSED DISCONNECT
SUPPLIED BY INSTALLER
L1
High Gas
Pressure
JR1*
B
5
B
Air
Proving
Swtich
6
10
G
9
C
F
A
G
4
GND
Equip
Ground (GND)
Terminal
12
High
Limit
LWCO
L2
RM7897A
Legend:
= Wired by Installer
= Provided by Installer
= Field Wiring Tie-in
Operating
Control
Key:
L
C
A
Trans
Trans - Ignition Transformer
GV1 - On/Off Gas Valve
GV2 - High/Low Valve
LWCO - Low Water Cut-Off
Wire Color:
7
8
SEE NOTE 1
Low Gas
Pressure
20
G
Flame Rod
B
L2
BK
GV1
OR
K
D
E
A
BK
BL
GV2
Motor
OR
A
A - White
B - Black
C - Blue
D - Orange
E - Brown/Red
G - Brown
K - Violet
L - Black/Red
Notes:
1.
For UV run white wire to G terminal and
blue wire to F terminal. For flame rod run
wire to F. G is a chassis ground.
2.
* - clip and remove jumper JR1
3.
Where a boiler management system
cannot supply motor power requirements
an isolation relay should be used.
A
Section: Sequence of Operation & Prepare the Burner for Start-up
Sequence of Operation
(Typical for RM7897A flame safeguard primary control)
1. Initiate – The primary control enters the INITIATE
sequence when the control is first powered on or
power returns after an interruption. The initiate
sequence is a ten second delay during which the
control verifies line voltage stability.
2. Standby – The control enters STANDBY until the
limits, operating limit control, burner switch, and all
microcomputer-monitored circuits are in the correct
state.
3. Load demand – Operating limit control contacts
close on drop in temperature (or pressure) and
initiates the start sequence.
4. Prepurge – The control will signal the PREPURGE
sequence when the airflow interlock and all
switches are in the correct state. The Prepurge
sequence is the amount of time the blower motor
runs prior to the ignition start sequence. Timing for
the Prepurge sequence is determined by a card
mounted inside the control module (typically 30
seconds).
5. Trial for ignition (TFI) – After the Prepurge
sequence has timed out, the ignition and main gas
valves will be energized. Because the burner has
direct spark ignition for the main flame, the flame
must be established and detected by the control
within 4 seconds or lockout will occur.
6. Run – With a flame established and the control
continuing to detect a flame, the burner will operate
in the RUN mode until the load demand is satisfied
or a limit opens.
7. Load Satisfied – The fuel valves are closed. After
a 15 second post purge, the burner switches to idle
until the next call for operation.
This operation sequence is
typical and for reference only. The
primary control could vary, depending on the customer
specification and code requirements. For the specific
operating sequence that applies to your installation,
consult the appliance manufacturer’s directions, wiring
instructions, and control manufacturer’s literature
supplied with your burner.
CG10 Burner Manual
Prepare the Burner for
Start-up
Professional Installation
& Service Required
Incorrect installation and mishandling
of start-up could lead to equipment
malfunction and result in asphyxiation,
explosion or fire.
y This burner must be installed and prepared for startup by a qualified service technician who is trained
and experienced in commercial gas burner system
installation and operation.
y Do not attempt to start the burner unless you are
fully qualified.
y Carefully follow the wiring diagrams, control
instruction sheets, flame safeguard sequence
of operation, test procedures and all appliance
manufacturer’s directions that pertain to this
installation.
y If any of these items are not clear or are unavailable,
call Beckett at 1-800-645-2876 for assistance.
Delayed Ignition, Explosion
and Fire Hazards
This is a direct spark ignition burner and
by code requirements must have a primary
control with a 4-second flame establishment
period. Exceeding 4 seconds could result in
delayed ignition, explosions and fire.
Always verify the primary control has a 4-second flame
establishment period by carefully following the control
manufacturers’ configuration instructions.
Example: Honeywell RM Series requires clipping and
removing the JR1 resistor.
13
Section: Prepare the Burner for Start-up
Start-up checklist
Verify the following before attempting to start
the burner:
1. General
○
○
○
○
Carefully read and become familiar with the CG10
Manual, Flame Safeguard Control Instructions,
sequence of operation, pertinent wiring diagrams,
gas system layout, insurance requirements,
other controls and valve literature pertinent to the
installation.
Follow the appliance manufacturer’s start-up
procedures (when available).
Inspect the combustion air supply and exhaust
venting and verify that they are free of obstructions
and installed and sized in accordance with all
applicable codes.
Notify appropriate personnel to schedule start-up
(gas utility, owner, operators, subcontractors, etc.).
2. Gas Supply Piping
○
○
○
○
○
Insure that the gas piping is properly sized and has
been inspected by the gas utility, leak tested at all
joints, and purged.
To protect the gas train and controls, insure that a
drip leg or dirt pocket has been properly installed.
Insure that the fuel gas being supplied is compatible
with the burner specification and is available at the
correct regulated pressure. (See burner name plate
and specification sheets).
Insure that the vent lines for the diaphragm valves
have been run to the outside and properly terminated.
Use R.W. Beckett recommended maximum pipe
lengths for good lightoff (Figure 8).
3. Electrical
○
○
Insure that all wiring has been completed and
complies with the National Electric Code NFPA 70
and local requirements.
Refer to Figure 1 and verify that the electrical supply
to the burner matches the voltage specification on
the label.
4. Boiler or Appliance
○
Insure that the flue passages and combustion area
have been thoroughly cleaned and are in good
condition.
14
○
○
○
○
Set the breech damper to the required position for
system operation.
Fill the appliance with water (boilers).
Check all safety and operating controls for correct
application, installation, wiring, and operation.
Insure that the maximum capacity of the appliance is
compatible with the specified burner input firing rate.
5. Burner - See Figure 10 for familiarization
○
○
○
○
○
○
○
Insure that the gas burner model and capacity meet
the requirements for the installation.
Insure that the gas train meets operating specifications,
all safety codes and insurance requirements.
Refer to Table 2 and Figure 11 to insure that the
burner air shutter and band are positioned for initial
start-up preliminary settings.
Insure that the burner is securely mounted in the
appliance with the pressure firing plate and all gaskets
in place for pressurized chamber applications.
For propane-firing burners, insure that the propane
restrictor has been correctly selected for your burner
model (see Table 3) and properly installed (see
Propane Restrictor Installation instructions).
Before operating insure that all protective cover
plates, enclosures and guards are in place and
securely fastened.
When available, refer to the appliance
manufacturer’s instructions and install the burner
accordingly.
6. Test instruments
○
○
○
○
The following calibrated test equipment is required
to properly install the appliance. Whether these are
included in one kit or are individual test components,
they should be calibrated and in good working order.
A combustion analyzer capable of measuring
oxygen (or carbon dioxide), carbon monoxide, stack
temperature, ambient temperature, and appliance
efficiency.
Electrical multi-meter capable of measuring voltage,
ohms, amps, and DC micro-ammeter for measuring
the flame signal. These could be included in one
meter or separate meters, but should be calibrated
and accurate.
Calibrated manometers and gauges capable of
measuring all pressure ranges in the gas supply and
appliance draft. This could typically range from a
few psi to 0.01” W. C.
Section: Prepare the Burner for Start-up
Figure 10. CG10 component familiarization
Major Components
Item
Description
1
Jacking Screw
2
Ignition Transformer
3
Primary Control
4
Blower Motor
5
Air Flow Proving Switch
6
Electrode Cable*
7
UV Flame Detector (if used)
8
Shutter
9
Air Band
10
High Gas Pressure Switch
11
Manifold Pressure Test Connection
12
Gas Gun Assembly
*Unplug from transformer when servicing
CG10 Burner Manual
15
Section: Start the Burner
Start the Burner
Professional Installation
and Service Required
Incorrect installation and mishandling
of start-up could lead to equipment
malfunction and result in asphyxiation,
explosion or fire.
y This burner must be installed and prepared for startup by a qualified service technician who is trained
and experienced in commercial gas burner system
installation and operation.
y Do not attempt to start the burner unless you are
fully qualified.
y Do not continue with this procedure until all items in
the ‘Prepare the Burner for Start-up’ section have
been verified.
y Carefully follow the wiring diagrams, control
instruction sheets, flame safeguard sequence
of operation, test procedures and all appliance
manufacturer’s directions that pertain to this
installation.
y If any of these items are not clear or are unavailable,
call Beckett at 1-800-645-2876 for assistance.
the main leak test cock as soon as the flame safeguard
powers the safety shutoff valves. If the boiler room is
quiet you may be able to hear the valve open, if not
you can generally place your hand on the valve and
feel it open. After you have observed main flame for
a brief time, trip any of the switches in the limit string
to shut the burner down. Monitor the flame and safety
shutoff valves to assure that shutdown is controlled by
the valves and that they operate properly. With this
test passed you may safely initiate automatic start-ups
on subsequent cycles.
Verify input firing rate
1. Clock the meter for CFH and calculate the
input firing rate. Compare the calculated rate to
the specified input for the boiler found on the
specification sheets and on the rating plates for
the burner and boiler. Do not exceed the specified
maximum input for the boiler.
2. Attach a manometer to the manifold test port, clock
the meter, and adjust the regulated pressure until the
specified input level is achieved. Refer to Table 2.
3. Be sure to set the breech or furnace pressure to the
correct value, since this will have an effect on the
manifold pressure.
Figure 11. Shutter and Band
Burner start procedure
BAND INDICATOR MARK
(Before proceeding, turn off and lock out electrical
power and close the main leak test cock to shut off gas
to the burner.)
SHUTTER INDICATOR
1. With the power and main gas supply to the burner
turned off, make sure gas has not accumulated in the
boiler or flues.
2. Check the initial air settings (shutter & band) for input
firing rate. Check the manufacturer’s settings either on
the nameplate shown in Figure 1 or listed in Table 2. If
adjustment is necessary refer to Figure 11 and loosen
the adjustment screws then twist the shutter and/or air
band until the indicators point to the values shown on
the nameplate or listed in Table 2.
3. With the main gas supply valve closed. Set the limit or
controller to call for heat then apply power to start the
burner. Reset the high and low gas pressure switches
if necessary.
4. In order to check the function of each component
(i.e: flame safeguard sequence, airflow proving
switch, ignition transformer, gas valves, safety lockout
timing, etc.), with the gas supply closed off, monitor
a complete burner run sequence. Note that the flame
safeguard control will lock out since the fuel supply has
been closed off.
5. If component operation sequence and function is
correct, reset the flame safeguard and initiate a new
cycle. Monitor the start-up cycle and manually open
16
◄
◄
◄
ADJUSTMENT SCALE
(FOR SHUTTER AND BAND)
SHUTTER
(for low rate adjustments)
adjust this with band fully
CLOSED
AIR BAND
(for high rate adjustments)
adjust this with shutter fully
OPEN
◄ = Tighten locking screws securely after adjustments have been made
The shutter and band both control
the amount of flow area available for
air inlet to the burner. The greater their combined flow area,
the higher the firing rate. The primary differences between
the two are their ease of adjustment and their total airflow
area. The shutter turns more easily and has a smaller net
flow area. As a result we have found the shutter to be better
suited for low rate adjustments, and the band better suited
for high rate adjustments. We recommend that at low rates
the band be left completely closed until the shutter has been
fully opened, and that for higher rates the shutter is left
completely open as the band is opened.
Section: Start the Burner
Table 2. Initial burner settings
Shutter Setting
Band Setting
Running Manifold
Gas Pressure, In. WC
Low Fire Start Gas
Pressure, In. WC
Shutter Setting
Band Setting
Running Manifold
Gas Pressure, In. WC
Low Fire Start Gas
Pressure, In. WC
Shutter Setting
Band Setting
1.0
0.5
3
0
1.3
0.6
3
0
1.5
0.8
4
0
2.0
1.0
6
0
350
CG10.1S
1.4
0.7
4
0
1.6
0.8
4
0
1.9
0.9
5
0
2.4
1.2
7
0
400
CG10.2S
1.1
0.5
4
0
1.3
0.7
4
0
1.6
0.8
5
0
2.1
1.0
6
0
450
CG10.2S
1.4
0.7
5
0
1.7
0.8
6
0
1.9
1.0
7
0
2.4
1.2
9
0
500
CG10.3S
1.2
0.6
6
0
1.5
0.7
7
0
1.7
0.9
8
0
2.2
1.1
10
1
550
CG10.3S
1.3
0.7
8
0
1.6
0.8
9
0
1.8
0.9
10
0
2.3
1.2
-
-
600
CG10.4S
2.5
1.3
5
0
2.8
1.4
6
0
3.0
1.5
7
0
3.5
1.8
9
0
700
CG10.4S
3.4
1.7
7
0
3.6
1.8
9
0
3.9
1.9
10
0
4.4
2.2
10
3
800
CG10.5S
3.1
1.6
10
0
3.4
1.7
10
1
3.6
1.8
10
1
4.1
2.1
10
3
900
CG10.5S
4.0
2.0
10
3
4.2
2.1
10
4
4.5
2.2
10
4
5.0
2.5
10
6
1000
CG10.6S
3.2
1.6
10
0
3.4
1.7
10
2
3.7
1.8
10
3
4.2
2.1
10
6
1100
CG10.6S
3.9
1.9
10
2
4.1
2.1
10
4
4.4
2.2
10
5
4.9
2.4
10
10
1200
CG10.6S
4.6
2.3
10
6
4.9
2.4
10
8
5.1
2.6
10
10
-
-
-
-
Low Fire Start Gas
Pressure, In. WC
CG10.1S
Burner Model
300
Firing Rate MBH
Low Fire Start Gas
Pressure, In. WC
1.00” W. C.
Running Manifold
Gas Pressure, In. WC
.50” W. C.
Band Setting
.25” W. C.
Shutter Setting
0” W. C.
Running Manifold
Gas Pressure, In. WC
Furnace Pressure
Stepped Spud Head Configuration
Spinner Head Configuration
300
CG10.1
1.5
0.8
3
0
1.8
0.9
3
0
2.0
1.0
4
0
2.5
1.3
5
0
350
CG10.1
2.0
1.0
5
0
2.3
1.1
6
0
2.5
1.3
8
0
3.0
1.5
10
1
400
CG10.2
1.6
0.8
4
0
1.8
0.9
4
0
2.1
1.0
5
0
2.6
1.3
6
0
450
CG10.2
2.0
1.0
4
0
2.2
1.1
4
0
2.5
1.2
5
0
3.0
1.5
8
0
500
CG10.3
1.5
0.8
5
0
1.8
0.9
5
0
2.0
1.0
6
0
2.5
1.3
8
0
550
CG10.3
1.9
0.9
7
0
2.1
1.1
8
0
2.4
1.2
9
0
2.9
1.4
10
1
600
CG10.4
1.1
0.6
6
0
1.4
0.7
7
0
1.6
0.8
8
0
2.1
1.1
10
0
700
CG10.4
1.5
0.8
9
0
1.8
0.9
10
0
2.0
1.0
10
1
2.5
1.3
10
4
800
CG10.5
1.5
0.7
9
0
1.7
0.9
10
1
2.0
1.0
10
3
2.5
1.2
10
6
900
CG10.5
1.9
0.9
10
1
2.1
1.1
10
3
2.4
1.2
10
4
2.9
1.4
10
9
1000
CG10.6
1.8
0.9
10
2
2.1
1.0
10
4
2.3
1.2
10
5
2.8
1.4
10
9
1100
CG10.6
2.2
1.1
10
4
2.5
1.2
10
6
2.7
1.4
10
7
-
-
-
-
1200
CG10.6
2.7
1.3
10
6
2.9
1.5
10
8
3.2
1.6
10
10
-
-
-
-
Notice: The settings in this chart are for reference only. The actual conditions at the installation may require further
adjustment by the fully qualified and experienced start-up technician.
Notice: The light-off rate must not be set below the low fire recommendation. Lower rates will lengthen the time it takes for
gas to get to the burner head and may cause ignition failures.
CG10 Burner Manual
17
Section: Start the Burner
Estimating Rate
Manifold to Furnace Pressure information can be used to estimate the burner’s firing rate when it is not possible to
clock a meter for the rate.
To estimate the burner’s firing rate:
Measure the furnace pressure over fire
Measure the manifold pressure (at the manifold pressure test connection in Figure 10).
Subtract the furnace pressure from the manifold pressure
Compare the result to the data in Figure 12 or 13 as appropriate for your burner.
Clocking a gas meter
Before you clock the meter you must make sure that the burner is operating at a steady rate, and that it is the only
thing that is using gas that would flow through the meter.
Uncorrected flow rate
Locate the dial that moves the fastest and determine how many cubic feet are represented by one revolution of its
dial.
Use your watch for timing and observe how many cubic feet are used in one minute.
Multiply by 60
Example: The dial is a one cubic foot dial, and goes around 7 ½ times in one minute. That gives 7.5 cubic feet per
minute. Multiply by 60 to get 450 cubic feet per hour (CFH) as your uncorrected flow rate.
Pressure correction
Gas is compressible, the higher the pressure on it, the smaller the number of cubic feet it occupies. To correct for that
you will need to know the gas pressure at the meter.
If there’s a gauge at the meter, read it while the gas is flowing. (If not, measure the gas pressure in the line
downstream of the meter before any valves or regulators, with no gas flowing.)
Convert the gas pressure to PSI if you measure it in any other units. (1 PSI = 27.7 inches water column)
Add 14.7 to the meter pressure, divide their sum by 14.7, and multiply that result times the uncorrected flow rate to
obtain the pressure corrected flow rate.
Example: The meter in the example above is operating at 14” WC.
14 / 27.7 = .5 PSI at the gauge; 14.7 + .5 =15.2; 15.2 / 14.7 = 1.034 correction factor;
1.034 x 450 = 465 CFH corrected for pressure
Temperature correction
Gas volume also changes with the temperature of the gas. Most gas meters are temperature compensated, and say so
on the face of the index and don’t require temperature correction. The temperature we correct to is 60° F. That’s close to
the temperature of the ground, so usually it’s not necessary to correct for temperature from underground lines.
Measure the gas temperature at the meter.
Add 460 to the gas temperature and divide 520 by the result to obtain the correction factor.
Multiply the pressure corrected flow rate times the temperature correction factor.
Example: The meter in the example is connected to an above ground line on a hot day and shows 100° F gas
temperature. 460 + 100 = 560; 520 / 560 = .929; 465 x .929 = 432 CFH corrected for pressure and temperature.
This figure is often called SCFH (for standard cubic feet per hour).
BTU’s and MBH
The BTU content of natural gas varies from one location to another, and even from day to day at a fixed location. For
firing estimates it is usually assumed to be 1000 BTU’s per standard cubic foot.
To calculate BTU/Hr firing rates multiply SCFH times 1000.
Example: 432 SCFH x 1000 = 432,000 BTU/Hr.
MBH stands for thousands of BTU’s per hour. Since 1 cubic foot of natural gas contains 1000 BTU, 1 MBH equals 1
SCFH of gas flow.
Example: 432 SCFH = 432 MBH
18
Section: Start the Burner
Figure 12. Manifold to Furnace Pressure Drop vs. Rate - Stepped Spud Design
1400
CG10.6S
CG10.5S
CG10.4S
CG10.3S
CG10.2S
CG10.1S
Rate, MBH
1200
1000
800
600
400
200
0
1
2
3
4
5
6
Pressure Drop, In. WC
Figure 13. Manifold to Furnace Pressure Drop vs. Rate - Swirl Vane Head Design
1400
CG10.6S
CG10.5S
CG10.4S
CG10.3S
CG10.2S
CG10.1S
1200
Rate, MBH
1000
800
600
400
200
0
0
CG10 Burner Manual
1
2
3
Pressure Drop, In. WC
4
5
19
Section: Start the Burner
Check operation and safety controls
Testing by Qualified
Technician Required.
Failure to properly test and verify the correct
function of operation and safety controls could lead
to equipment malfunction and result in asphyxiation,
explosion or fire.
y The testing of operation and safety controls requires
technical training and experience with commercial
gas burning systems.
y Carefully follow the manufacturer’s instructions
supplied with the controls.
y Verify the correct function of all operation and safety
controls used in the installation.
y If instructions are not available, use the following
recommended procedures and record all results in a
start-up log.
y Refer to Figure 7 and Figure 10 for typical test
points and component locations.
1. High limit – To check the High Limit, raise the
temperature or pressure of the operating control to
a higher level and lower the limit to a setting less
than the operating control. Run the burner until the
high limit opens and shuts the burner off. Adjust the
controls back to the desired settings.
2. Operating control – Run the burner until the
operating control shuts it off. If necessary, make
adjustments to ensure the control cycles the burner
in the desired temperature or pressure range.
Operating controls should be
set to minimize the number of
firing cycles that the burner runs. High cycling rates
increase the possibility of light-off lock outs.
3. Low water cutoff (LWCO) – With the burner firing,
open the blow down valve on the low water cutoff,
if applicable. As the water level drops, the LWCO
switch contacts open and shut the burner off. When
the water level rises, the LWCO contacts close
and restart the burner. Monitor the LWCO switch
operation in relation to the water level in the sightglass for synchronization.
20
4. Airflow proving switch – With the burner firing at
its lowest rate, loosen the tubing connection to the
airflow proving switch. A loss in air pressure at the
tubing should immediately cause the diaphragm
in the switch to open and recycle or lockout the
safeguard control.
5. Low gas pressure switch – With the burner firing
and a manometer attached to a test port near
the low pressure switch, gradually close the main
leak test cock to shut off the gas supply. Note the
pressure at which the low gas pressure switch
opens and shuts the burner off. Manually reset the
switch. The low gas pressure switch should be set
at half of the normal supply pressure in the line.
6. High gas pressure switch – With the burner firing
and a manometer attached to the test port nearest
the high pressure switch, gradually increase the
gas pressure until the high pressure switch opens
and shuts the burner off. Note the pressure and
manually reset the switch. The high gas pressure
switch should be set at one and one half times the
high fire manifold pressure (see nameplate data in
Figure 1 or set switch as determined by testing).
7. Leak-test valve – With the burner firing and
manometer attached to the leak-test valve port, turn
the burner electrical switch off and observe that
the gas pressure does not increase after several
minutes. This proves total closure of the main gas
valve.
8. Flame safeguard safety lockout – Simulate a
flame failure by turning the main gas supply off. The
control should shut the burner off on safety within
the safety lockout time.
9. Flame sensor circuit (flame rod) – With the
burner power switch turned off, refer to the wiring
diagram supplied with the control and locate the
sensor connection terminals. Place DC voltmeter
probes in the flame amplifier test jacks. With the
burner firing, the flame signal should be steady and
at least 1.25 VDC.
10. Flame sensor circuit (UV scanner) – With the
burner power switch turned off, refer to the wiring
diagram supplied with the control and locate the
sensor connection terminals. Place DC voltmeter
probes in the flame amplifier test jacks. With the
burner firing, the flame signal should be steady and
at least 1.25 VDC.
Section: Start the Burner
Use test instruments to set combustion:
Recommended combustion test sequence:
Always use calibrated test
instruments to set combustion
levels. Verify that test instruments are calibrated and
in good working condition. If not already provided, drill
test access holes in the flue pipe near the breech (or
upstream of the boiler breech damper, if applicable) and
in the front mounting plate area for firebox pressure. Be
careful not to damage any water-backed surface.
1. Adjust the draft or breech pressure to the appliance
manufacturer’s recommended level.
Verify that all boiler sections, canopy, and access plates
or doors are fully equipped with gaskets and sealed
against any leakage, which could affect the combustion
test results. Before making these tests, operate the
burner for several minutes to allow the heating system
temperature to stabilize or nearly reach steady-state
levels. Record all results in the start-up log for future
reference.
4. Open the air adjustment until the O2 level is
increased by at least 1% or to 3% O2 (whichever
is higher). This should reduce the CO level and
provide a margin of reserve air to accommodate
variable conditions.
○
○
Draft – Set the breech or furnace pressure to the
level specified by the appliance manufacturer.
Typical example: +0.10” W. C.
Oxygen – It is recommended that you measure the
oxygen (O2) early in the test sequence because
high levels of carbon monoxide can be created at
very low or even very high O2 levels. The typical
operating range is between 2.5% – 4.5 %. The
equivalent carbon dioxide (CO2) operating range is
9% – 10.5%.
2. Measure the carbon monoxide level and adjust
air settings, if necessary, to regulate it to about 50
PPM for a starting point.
3. Measure the O2 or CO2 at the 50 PPM CO level.
For this discussion, assume the O2 is 1.5% (11%
CO2).
5. Sample the CO level again. It should be in the 0 to
20 PPM range.
6. Check the draft to ensure it still meets
specifications. If a major change in draft is
required, repeat the above steps.
7. Perform any final adjustments and lock the air
settings securely. Run the burner through several
cycles to verify prompt ignition and stable burner
operation.
High excess air levels reduce
the flames UV output and the
scanner signal that proves the burner is firing.
○
○
Carbon monoxide (CO) – An operating range of 0
-50 PPM is recommended for the CG10 burner. The
maximum carbon monoxide (CO) level permitted
in the flue gas by the UL 795 Standard is 400 PPM
(.04%).
Stack Temperature – The stack temperature should
be within the range specified by the appliance
manufacturer. It is influenced by input firing rate,
flame shape, excess air ratio, and cleanliness of
boiler flue passages. This temperature, combined
with the ambient temperature, and O2% (or CO2) is
used in calculating the appliance efficiency.
CG10 Burner Manual
21
Section: Maintenance and Service
Maintenance and Service
Annual Professional
Service Required
Tampering with or making incorrect
adjustments could lead to equipment
malfunction and result in asphyxiation,
explosion or fire.
y Do not tamper with the burner or controls or make
any adjustments unless you are a trained and
qualified service technician.
y To ensure continued reliable operation, a qualified
service technician must service this burner annually.
y More frequent service intervals may be required in
dusty or adverse environments.
y Operation and adjustment of the burner requires
technical training and skillful use of combustion test
instruments and other test equipment.
Turn Off Electric and Gas
Supply Before Servicing
Failure to turn off electric and gas supply could
result in electrical shock, gas leakage, explosion, or
fire hazards.
y Turn main gas valves and electric power off before
performing any maintenance.
y If a maintenance procedure requires electrical
power, use extreme caution.
Annual maintenance
3. Remove the blower motor and clean any
accumulated matter from the blower wheel and
motor end bell.
4. Check wheel for damage and the hub setscrew
for tightness. If the blower wheel must be
removed from the motor shaft, insure that
clearance specifications are maintained.
5. Clean the inside surfaces of the burner housing
scroll and especially the air intake area and
airflow proving switch suction tube.
6. If the blower motor does not have permanently
lubricated bearings, oil the motor. Clear any
debris from the air vents on the motor body.
7. Clean the ignition transformer, baseplate, and
terminal bushings. Inspect the ignition leads for
signs of deterioration and loose terminals.
8. If the burner flame detection is a UV scanner,
inspect the mounting and clean the lens
according to the component manufacturer’s
recommendations.
9. Remove the gas gun assembly and clean the
entire unit, paying special attention to the air
diffuser and spuds.
10. Inspect the flame rod for oxidation or distortion.
Clean all surfaces, set the probe position, and
insure that the flame rod is securely fastened.
Refer to Figures 14A and 14B.
11. Inspect the ignition electrode for any damage.
Clean all surfaces, set the proper electrode gap,
and make sure it is securely fastened.
Burner:
12. Clean the inside of the air tube and inspect the
combustion end for any deterioration. Referring
to Figure 2, check the recess dimension from
refractory.
1. Run the burner and perform a complete
combustion test using the proper instruments
before proceeding. If necessary refer to the
section labeled Start the Burner. Record the
results for reference.
13. Inspect gas tube O-ring condition and replace if
damaged. Install gas gun assembly back into
the burner and use the jacking screw to tighten
the gas gun securely in place. (Automotive
chassis or bearing grease is suitable for o-ring
lubrication.)
(The following should be performed by a
qualified service technician only.)
○
2. Inspect and clean all dirt accumulation from the
gas train, burner exterior, burner air band/shutter,
and surrounding area.
22
Section: Maintenance and Service
14. Inspect the condition of the appliance mounting
plate and burner mounting flange gaskets and
replace any damaged materials. See Figure 6.
15. Inspect all burner control wiring and the burner
control panel for damaged insulation and loose
terminals/connections.
○
Follow the guidelines under “Start the Burner” to set
the combustion levels using test instruments.
○
Appliance – (Follow appliance manufacturer’s
service procedures. The following steps are
emphasized because they relate to burner operation)
○
2. Turn off all electrical power to the burner.
3. Protect the burner and controls from moisture
and dirt.
2. Insure that the flue passages, flue vent pipes,
and chimney flues are clean and unobstructed.
4. Inspect boiler sections and system load piping
for possible leaks. Make all necessary repairs.
5. Check all operating and safety controls on the
boiler for proper installation and operation.
○
Manual shutdown for long periods:
1. Close all gas valves in the gas supply piping
system.
1. Check the condition of the combustion chamber
refractory, the front-plate insulation, and all
gaskets and seals. Repair or replace as necessary
3. Check barometric damper or draft hood for
proper operation.
Flame safeguard:
Follow the control manufacturer’s instructions and
verify that the control is functioning to specifications.
See Page 13 for typical sequence of operation and
Items 8 through 10 on Page 20 for control system
checks.
16. Verify that the source voltage to the burner and
control panel is within 10% of the burner rating
as listed on the nameplate. (Figure 1)
○
Adjust the burner for proper combustion:
○
Ignition Reliability
1. Examine ignition electrode inslators for cracks.
2. Examine ignition wires for worn insulation.
3. Examine ignition electrodes for wear.
4. Check ignition transformer functionality.
6. Perform all maintenance and tests according to
the burner control manufacturer’s instructions
(limits, controllers, low water cutoff, relief valves,
feed valves, etc.)
5. Verify that the head is centered in the airtube and
that the head is not damaged.
Gas supply piping:
8. Verify low fire light-off rate (Table 2)
6. Check inlet pressure to the gas train SSOVs.
7. Verify maximum recommended pipe lenghts
used in gas trains (Figure 8)
Inspect all piping for leakage and proper installation.
Perform necessary repairs to comply with all codes.
○
Installation area:
1. Insure that there are no combustible materials,
flammable liquids or vapors in the vicinity of the
heating appliance.
2. Verify that the combustion air supply is
functioning properly, adequately sized, clean,
and properly lubricated.
CG10 Burner Manual
23
Section: Maintenance and Service
Figure 14A – Gas Gun Assembly
1/8” GAP
(BOTH HEAD
STYLES)
Figure 14B – Gas Gun Assembly
.375”
Burner Head Adjustment - There is an optimum gas orifice size and burner head setting for each firing rate of the
CG10 burner. The gas orifice size sets the gas flow velocity; the head setting establishes the airflow velocity.
When those velocities are properly matched the burner provides its best performance and stability.
The gas orifice size is built into the burner head. You can verify the correct selection by looking for the burner
model number stamped on the top centerline of the stainless steel tube that forms the base of the burner head. It
should match the model number on the Beckett burner data label on the blower housing.
The head setting is established by a notched sleeve on the gas tube that can be rotated to positions on a scale
marked by the burner’s model number. The scale should normally be set to the model number on the Beckett
burner data label. (If specific application requirements dictate an alternate head setting it will be noted by a label
on the gun assembly.)
For normal service requirements it is not necessary to disassemble the head from the gas tube. If you
disassemble the gas gun, make sure that when you re-assemble it:
1. The adjustment scale is set to the correct position as indicated by the burner model number or Gun Label.
2. The alignment marks on the head, scale and stop are in alignment.
3. The O-ring between the head and the adjustment scale is in place, is lubricated with grease, and is
compressed between the head and scale as the setscrews that retain the head are tightened.
24
Section: Maintenance and Service
Propane Restrictor Description
Installation
The Beckett Propane Restrictor Conversion Kit allows
for the conversion of CG10 burners for use with propane
gas. With the proper installation of the restrictor and
attached O-ring, adjustments and settings for propane
use will be the same as the adjustments and settings for
natural gas use as detailed in the burner manual.
Note that Steps 1 and 2 on the following page refer to
fully assembled burners. Skip to Step 3 when converting
a burner without the air tube assembly installed.
Figure 16 – Component Locations
This conversion kit shall
be installed by a qualified
service agency in accordance with the
manufacturer’s instructions and all
applicable codes and requirements of the
authority having jurisdiction. (In Canada,
in accordance with the requirements
of the CAN/CGA-B149 Installation Code.) If the
information in these instructions is not followed
exactly, a fire, explosion, or production of carbon
monoxide may result causing property damage,
personal injury or loss of life. The qualified service
agency is responsible for the proper installation of
this kit. The installation is not proper and complete
until the operation of the converted appliance
is checked, as specified in the manufacturer’s
instructions supplied with the kit.
B
A
D
C
Figure 15 – Propane Conversion Major Components
A
B
C
H
H
G
F
E
CG10 Burner Manual
Major Component Key for
Figure 16 & 17
A
Air Tube
B
Jacking Screw
C
Internal Gas Tube
D
External Gas Manifold
E
Propane Restrictor
F
Union
G
Restrictor O-ring
H
Gas Tube O-ring
G
E
25
Section: Maintenance and Service
Use authorized replacement parts
only. Restrictors are precisionmachined parts and O-rings are rated for fuel contact.
Do not attempt to replicate or modify any parts. Refer to
Table 3.
Figure 17 – Gas Gun Assembly Installation
The gun assembly is secured inside
the air tube by a spring-loaded
jacking screw. It is spring loaded in order to control the
force it can impose on the gun assembly. When installing
the jacking screw look inside the air tube to verify that
the pointed tip of the jacking screw pin is seated into the
small slot on the locating pad on top of the gun. There is
also an external verification of correct assembly: when
the screw is fully tightened, the e-clip on the top of the
center pin should come flush with the top of the screw.
Refer to Figure 17.
Refer to Figures 15 and 16 when performing the
following steps.
1. Remove the jacking screw (B) from the air tube/
manifold assembly to free the internal gas tube (C).
2. Gently rock the internal gas tube (C) to loosen the
tube from the union (F).
3. Inspect the O-rings and insure that they are
properly lubricated. (A silicon O-ring lubricant is
recommended, but automotive chassis or bearing
grease is an acceptable substitute.)
4. Referring to Figure 16, place the restrictor (E)
with pre-attached, pre-lubricated O-ring (G) into
the internal gas tube (C). Use your hand to press
the restrictor into the tube. The O-ring will hold the
restrictor in place.
Table 3 - Propane Restrictors
Replacement Part Numbers
Burner Model
Restrictor
Kit
Restrictor
Inside
Diameter
O-Ring
Part
Number
CG10.1
3246700U
0.401
3226409U
CG10.2
3246701U
0.432
3226409U
CG10.3, CG10.2S
3246702U
0.470
3226409U
CG10.1S
3246703U
0.418
3226409U
CG10.3S, CG10.6S
3246705U
0.510
3226409U
CG10.4S
3246706U
0.459
3226409U
5. Insure that the O-ring (H), attached to the outside
diameter of internal gas tube, is properly lubricated
and seated against the flange on the internal gas
tube.
CG10.5S
3246707U
0.482
3226409U
CG10.4
3246723U
0.547
3226409U
CG10.5
3246724U
0.578
3226409U
6. Install the internal gas tube (C) back into the air
tube (A) housing, refer to Figure 15. Fit the end of
the tube into the union (F) on the air tube.
CG10.6
3246725U
0.594
3226409U
7. Re-install the jacking screw (B). (Refer to the above
notice for installation details.)
8. Fill out and place the supplied Conversion Data
Plate adjacent to the rating plate.
9. Complete and attach the supplied Adjustment Data
With the gas restrictor installed, as
shown in Figure 15, all burner air
adjustments and gas manifold pressure adjustments for
propane will be approximately the same as the natural
gas adjustments shown in the burner manual, or printed
on the “Mfr’s Settings” label on the burner housing. For
a copy of the current burner manual go to http://www.
beckettcorp.com/protect/tech.asp. If furtherTechnical
assistance is required, call 800-645-2876, Monday thru
Friday, 8AM to 5PM EST.
26
The gun assembly is secured inside the air tube by
a spring-loaded jacking screw. It is spring loaded
in order to control the force it can impose on the
gun assembly. The screw can be tightened firmly
without putting excessive pressure on the gun
assembly that might distort the gun or damage its
O-ring seals. When installing the jacking screw
look inside the air tube to verify that the pointed
tip of the jacking screw pin is seated into the small
hole on the locating pad on top of the gun. There
is also an external verification of correct assembly:
when the screw is fully tightened, the e-clip on the
top on the center pin should come flush with the top
of the screw.
Section: Maintenance and Service
For the OPERATOR
Inspect Heating System Regularly
Lack of regular inspections and inadequate maintenance could lead to equipment malfunction and
result in asphyxiation, explosion or fire.
(Always follow the appliance manufacturer’s recommended service instructions, when available.)
y The following checklist is intended to be used as a minimum reference guide only and does not supersede
or replace the heating appliance manufacturer’s recommended service and maintenance instructions or
any code requirements.
y Consult the installation and service instructions provided by the individual control or component
manufacturer and carefully follow their directions.
y Maintenance and testing may be required more frequently due to dusty or severe operating conditions.
y If unusual or questionable performance is observed, shut the system down and contact your qualified
service agency immediately.
Table 4 - Periodic Inspection Sheet
Test/Inspection
Frequency
Comments
Inspect area surrounding heating plant
Daily
Keep area clean and free of clutter
Inspect gas supply system for leaks
Daily
Use visual and electronic leak detection
Inspect appliance & piping for water leaks
Daily
Keep burner and controls dry at all times
Inspect gauges, indicators, monitors
Daily
Note condition. Replace defective parts
Check temperature and pressure levels
Daily
Compare to manufacturer’s specifications
Make visual inspection of flame
Daily
Look for changes in shape, size, and color.
Monitor burner start-up
Daily
Verify prompt ignition and flame stability.
Monitor stack temperature
Daily
Compare to start-up and trend level.
Test low water cutoff and alarm
Daily
Follow control manufacturer’s instructions & procedures
in ASME Boiler & Pressure Vessel Code, Section VI
- Recommended Rules for Care and Operation of
Heating Boilers.
Calculate fuel gas input firing rate
Weekly
Compare to appliance manufacturer’s Specifications
Check flame safeguard sequence of
operation.
Weekly
Follow control manufacturer’s instructions
Flame failure response & lockout timing.
Weekly
Follow control manufacturer’s instructions
Flame sensor signal level (if meter is hardwired)
Weekly
Compare to control manufacturer’s specifications
Main fuel gas valves
Weekly
Open high limit and verify cutoff operation
Inspect exhaust vent system for blockage
Weekly
Remove any restrictions
Inpect compbustion air supply
Monthly
Remove any restrictions
Check high and low gas pressure interlocks
Monthly
Follow control manufacturer’s instructions
Check safety valves
As needed
Follow control manufacturer’s instructions & procedures
in ASME Boiler & Pressure Vessel Code, Section VI
- Recommended Rules for Care and Operation of
Heating Boilers.
CG10 Burner Manual
27
Section: Replacement Parts
Replacement Parts
For best performance specify genuine
1
replacement parts.
3
2
6
5
4
16
15
14
13
20
12
11
21
10
18
9
7
Item
8
Description
17
19
Part #
Item
Description
Part #
Spring Clamps (4 in pckg.)
3236501U
1
Ignition Transformer
7503U
11
2
Control Subbase
See Note 1
12
Head
Spec. Applic.
3
Primary Control
See Note 1
13
Cable, Ignition Electrode
5990130U
4
Shutter
3215U
14
O-ring set (2 in package)
32264U
5
High Gas Pressure Switch
2190903U
15
Gas Tube assembly
5193201U
6
Air Band
3819A
16
Jacking Screw
5193401U
7
Motor - 120v
- 220v
21341U
21654U
17
Air Tube
Spec. Applic.
18
Cable, Flame Rod (if used)
5990280U
8
21448U
Blower Wheel - CG10
- CG10A or CG10B 21339U
19
Flame Rod (if used)
2191301U
UV Scanner (not shown)
7247U
9
Air Proving Switch
2190901U
20
Restrictor O-Ring (LP Only)
3226409U
10
Electrode Set
Spec. Applic.
21
Propane Restrictor (LP Only)
See Table 3
Note 1: Refer to the UL Label for controller model number.
28
Section: Burner Configurations
Burner Configurations
The CG10 burner is offered in configurations that allow it to be customized to the capacity and furnace size needs of
many different appliances. Two blower wheel sizes provide airflow capacity through the range. An air guide provides
static pressure augmentation at low rates and an inlet sleeve maximizes flow capacity at high rates. Three air tube
shrouds shape and stabilize the base of the flame. Twelve gun assemblies provide mixing control and retain the
flame. See chart on opposite page.
Low Rate Burner Configuration; 300 to 800 MBH Applications
High Rate Burner Configuration; 600 to 1200 MBH Applications
CG10 Burner Manual
29
Section: Burner Configurations
The table below shows proven combinations of the components and the nominal firing rate ranges they serve. These
combinations may vary and may be used outside of the nominal listed ranges based on results of specific applications
tests conducted for OEM appliance manufacturers.
Air Platform Configurations
Air Platform
Blower Wheel
Air Inlet
CG10
21448
189 Air Guide
CG10A
21339
32336 Straight Inlet
CG10B
21339
178 Air Guide
CG10 A or B
Chassis
CG10
Chassis
Burner Configurations
Burner Model
Air Tube
Shroud
CG10.1
31728
CG10.2
31728
CG10.3
31728
CG10.4
32297
CG10.5
32297
CG10.6
32297
Note: “s” suffix refers to the Step Spud Design
30
Gas Gun
Assembly
CG10.1S
CG10.1
CG10.2S
CG10.2
CG10.3S
CG10.3
CG10.4S
CG10.4
CG10.5S
CG10.5
CG10.6S
CG10.6
Nominal
Capacity, MBH
300-378
379-476
477-600
601-756
757-952
953-1200
CG10 Burner Manual
31
Limited Warranty Information
The R. W. BECKETT CORPORATION (“Beckett”) warrants to persons who purchase its “Products” from
Beckett for resale, or for incorporation into a product for resale (“Customers”), that its equipment is free
from defects in material and workmanship. To qualify for warranty benefits, products must be installed by a
qualified service agency in full compliance with all codes and authorities having jurisdiction, and used within
the tolerances of Beckett’s defined product specifications.
To review the complete warranty policy and duration of coverage for a specific product, or obtain a written
copy of warranty form 61545, please choose one of the following options:
1. Visit our website at: www.beckettcorp.com/warranty
2. Email your request to: rwb-customer-service@beckettcorp.com
3. Write to: R. W. Beckett Corporation, P. O. Box 1289, Elyria, OH 44036
NOTE: Beckett is not responsible for any labor cost for removal and replacement of equipment.
THIS WARRANTY IS LIMITED TO THE PRECISE TERMS SET FORTH ABOVE, AND PROVIDES
EXCLUSIVE REMEDIES EXPRESSLY IN LIEU OF ALL OTHER REMEDIES, AND IN PARTICULAR
THERE SHALL BE EXCLUDED THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. IN NO EVENT WILL BECKETT BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGE OF ANY NATURE. Beckett neither assumes, nor authorizes any person to
assume for Beckett, any other liability or obligation in connection with the sale of this equipment. Beckett’s
liability and Customer’s exclusive remedy is limited to the cost of the product.
USA: P.O. Box 1289 ● Elyria, Ohio 44036
Canada: R.W. Beckett Canada, Ltd. ● Unit #3, 430 Laird Road ● Guelph, Ontario N1G 3X7
www.beckettcorp.com
Part Number 6104 BCG10 R15, Printed in the U.S.A. 01/11