Anderson ANX70 Series User manual

Anderson Thermal Solutions (Suzhou) Co., LTD
ANX70 Series Burner Operation
Manual
No：
ATS–Operation Manual–ANX70
Subject:：
ANX70 Burner Operation Manual
Version ：
V1.0
Author ：
Wilson Sun
Review ：
David

CONTENT
1. Disclaimer Notice ........................................................................................................................ 1
2. Liability And Warranty................................................................................................................. 1
3. Safety Guide ................................................................................................................................ 1
4. Fuel Information.......................................................................................................................... 2
5. ANX70 Series Burner Description................................................................................................ 2
6. Burner Component Introduction ................................................................................................ 3
7. Burner Operation Data................................................................................................................ 4
8. Performance Curves.................................................................................................................... 5
9. Burner Installation Dimension Diagram...................................................................................... 5
10. Burner Installation....................................................................................................................... 6
10.1 Storage:............................................................................................................................6
10.2 Handing ............................................................................................................................6
10.3 Pre-Installation Checklist .................................................................................................6
10.4 Operation Requirement...................................................................................................6
10.5 Burner Mounting .............................................................................................................7
10.6 Checklist after installation ...............................................................................................7
10.7 Prepare for adjustment....................................................................................................8
10.8 Burner commission ..........................................................................................................8
10.9 Start burner......................................................................................................................9
10.10 Stop Procedure ...............................................................................................................9
11. Burner Maintenance .................................................................................................................10
11.1 Half-year checklist..........................................................................................................10
11.2 Annual checklist .............................................................................................................10
12. Troubleshooting Procedures.....................................................................................................11
13. Appendix .................................................................................................................................. 13
13.1 Operator training record................................................................................................13
13.2 Half Year Audit Record...................................................... Error! Bookmark not defined.
13.3 Annual Audit Record......................................................... Error! Bookmark not defined.

Anderson Thermal Solutions – ANX70 Burner Operation Manual
Anderson Thermal Soluions（Suzhou）Co. Ltd.
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This manual has been written for those who are already familiar with all aspects of nozzle
mix burner and its add-on components. Main contents of the manual including safety rules,
burner installation, commissioning, operation parameters, maintenance and
troubleshooting, spare parts, etc.
1. Disclaimer Notice
Anderson Thermal Solutions (Suzhou) Co., Ltd. reserves the right to change the
construction and/or configuration of our product at any time without informing customers.
If the product or its individual modules are used for purposes other than the designated
purpose, their effectiveness and suitability must be confirmed.
Anderson warrants that the material itself will not infringe any patents. Every effort has
been made to make this manual as accurate and complete as possible. If you find errors or
omissions, please contact us so we can correct them.
2. Liability And Warranty
Due to negligence, breach of warranty or other reasons, Anderson's liability for its products
is limited to the provision of such replacement parts and will not be liable for any other
injury, loss or expense, whether direct or indirect, including but not limited to Loss of or
damage to the use of materials that sell, install, use, fail to use or repair or replace Anderson
related products.
The warranty is void if: any operation explicitly prohibited in this manual, any adjustment
or assembly process not recommended or authorized.
3. Safety Guide
Only those who were trained and qualified person can follow the manual to operate or
adjust the combustion system. The fire was prohibited within a radius of 5 meters of the
combustion system. Flame, non–covered light sources or heat sources shall not be brought
to the combustion area unless it is related to the process. Welding in combustion control
area shall be approved to ensure the safety in the area and also preventive measures
should be taken into consideration.
Before starting, the operator must confirm whether the burner and gas pipeline are in
normal working condition, and there is no flammable substance around the burner. The
burner must be operated with fuel and oxygen or air. The ignition and operation of the
burner must be performed at the specified position. The burner has been correctly and

Anderson Thermal Solutions – ANX70 Burner Operation Manual
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safely installed before ignition. The ignition of the burner needs to be performed after the
combustion chamber is purged. If it is ignited at a low temperature, it needs to be replaced
with 5 times the volume of the combustion chamber to avoid explosion.
However, it is not necessary to purge when the temperature is higher than 750℃. Air pipe
or gas pipe connected with burner should be tight enough with no leakage, also the
periodically check air or fuel nozzles of the burners to prevent to be blocked by dust, slag
or other materials.
ATTENTION：DANGER OF BEEN BURNT
When burner in operation, combustion is severe, so the burner must be fixed. Hoses or
cables in area of the combustion system must be suitable for high temperature, to prevent
high temperature failure or cause safety accidents. Burners should be periodically
inspected and cleaned. Copper wire brush may be used, if necessary, to clean burner head.
The burner system should be checked twice a year for safety operation.
Burner commissioning shall take care of ignition position, minimum and maximum output
position. Following interlocks will cause emergency stop, including gas low pressure, high
pressure or low combustion air pressure, as well as emergency stop is trigged, the main
power is out, UV signal failure or kiln safety conditions (such as high temperature limit, flue
system opening, etc.) will cause the burner lockout. Users need to know the maintenance
interval recommended by the manufacturer and the interval specified by national laws,
whichever is shorter.
4. Fuel Information
The following table shows the combustion fuel characters of natural gas, safety rules must
be obeyed when the operation carried out.
Fuel
Natural gas
Low Calorific value
35,900 [kJ/m3]
Composition
>98% CH
4
Reference conditions
1,013.25 mbar, 0°C
5. ANX70 Series Burner Description
ANX70 series burner is Anderson Thermal Solutions (Suzhou) Co., Ltd. patented nozzle
mixing burner, with staged combustion, utilize Flue Gas Recirculation and other designs to

Anderson Thermal Solutions – ANX70 Burner Operation Manual
Anderson Thermal Soluions（Suzhou）Co. Ltd.
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lower NOx, suitable for medium and low temperature (< 850 °C) air heating, with low NOx
and monoxide carbon emission, high-performance burner. In addition, the burner is very
easy to install and maintain. This series of products are used in indirect heating furnaces,
air heating and other applications below the heating temperature below 850 °C.
ANX70 Series Burner Advantage:
–Staged combustion, primary combustion with excess fuel, and secondary air
distribution is wide, greatly reducing the generation of NOx.
–The second combustor design helps the flue gas recirculation inside the combustion
chamber.
–Wide combustion turn-down ratio, up to 50:1.
–Reliable ignition, the burner can ignite at any point within the ignition range.
–Reliable operating performance, once commissioned, under the same operating
conditions, no need further adjustment or maintenance.
–For indirect heating applications, heating efficiency increases due to the unique flame
shape.
6. Burner Component Introduction
ANX70 series burners are mainly made up of blower, burner body, nozzle, combustor and
spark, etc. Different components are connected together with bolts, shown as below Fig 1
is exploded drawing view, in which the nozzle and burner body are made of cast iron,
combustor tube is stainless steel.
Fig 1. ANX70 Series Burner Explosion View

Anderson Thermal Solutions – ANX70 Burner Operation Manual
Anderson Thermal Soluions（Suzhou）Co. Ltd.
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Number
Name
100
Blower assembly
110
Spark Rod
120
Gas Flow Control Valve
130
Burner Body
140
Primary Combustor
150
Second Combustor
7. Burner Operation Data
Following table 1 shows the ANX70 series of burner operation data.
Table 1: ANX70 series of burner operation data.
Type of
Burner
Input
kW
NG inlet
Pressure
(mbar)
CA Inlet
Pressure
(mbar)
NG Pressure
Drop
(mbar)
CA Pressure
Drop
(mbar)
NG Orifice
Plate
Diameter
(mm)
Flame
Length
(mm)
Maximum Maximum Max Min Max Min
70G300
26-300
31
41
8.5
0.2
15
0.5
18
850
70G600
53-560
23
31
11.0
0.2
18
0.5
24
860
70G900
80-900
31
38
11.0
0.2
17.5
0.5
29
1270
Notes:
–Above data is based on net heat value (LHV).
–Normal condition: 1 atmosphere, 0°C.
–Actual data varies by each application condition.
–Pressure or differential pressure value is based on 20°C, excess air 15%.
–Orifice diameter based on Natural gas as fuel.
–Flame length is measured from the combustor outlet, fuel is natural gas, running on
ratio.

Anderson Thermal Solutions – ANX70 Burner Operation Manual
Anderson Thermal Soluions（Suzhou）Co. Ltd.
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8. Performance Curves
The operation and emission curves of the ANX70 series burner is shown in figures 2 and 3.
Fig 2. ANX70 Series Burner Operation Zone Fig 3. 70NAX Series Burner Emission
9. Burner Installation Dimension
Following Fig 4 shows the ANX70 burner installation dimension.
Fig 4. ANX70 Series Burner Installation Dimension

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ANX70 Series burner installation dimension shown as table 2
Table 2 ANX70 Series burner installation dimension (mm)
Type
A
B
C
D
E
F
G
70G300
285.5
285.5
290
308.5
260
670
330
70G600
285.5
285.5
290
308.5
260
670
330
70G900
285.5
285.5
320
360
264
754
320
10.Burner Installation
10.1 Storage:
–Make sure that the area is clean.
–Store the components in a cool, clean, dry room.
–Keep the components in the original package as long as possible
10.2 Handing
–Make sure that the components are clean and free of damage.
–Protect the components from weather, damage, dirt and moisture.
–Protect the components from excessive temperatures and humidity.
–Use appropriate support equipment, i.e. harnesses, straps, chains etc. when lifting
burner components.
10.3 Pre-Installation Checklist
Air quality requirement:
–If there are corrosive fumes or materials in the surrounding air, find clean air source
to supply to the burner. Observe ambient temperature limits as stated in operation
data.
–If combustion air from outside of the burner room, must provide an opening in the
room wall of at least 6 cm2per 1 kW to supply the burner fresh combustion air.
–Do not allow exhaust gases to accumulate in the work area. Provide a means for
exhausting these gases from the building by blower.
–Install the burner with enough room so it may be easily accessed for inspection.
10.4 Operation Requirement
Be sure the burner operating environment matches the original operating
specifications. Check the following items
–Voltage, frequency, and stability of electrical power
–Fuel type and fuel supply pressure
–Adequate fresh, clean, combustion air

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–Humidity, altitude, temperature and presence of damaging corrosive gases of the
supply air.
10.5 Burner Mounting
If the gas or air inlet orientation needs to be changed, need to disconnect the flexible
hose connected to the burner, remove the four bolts on rear cover, then take out rear
cover and rotate to the right position to connect. Then install the four bolts. Re-
connect the piping.
1. Install the flame sensor
Install the flame sensor (UV or flame rod) to the rear cover pipe screw hole or extent
pipe, make electrical connect to the flame controller.
2. Installing the Spark Plug
Install the spark plug into the opening in the rear cover, make electrical connect to
the flame controller, please to be noted that do not apply any grease to the threads
of the spark plug. You can cause bad grounding of the spark plug if you apply grease
to it. Bad grounding of the spark plug results in a weak spark.
3. Burner Mounting
Fix burner flange with bolts to the wall of chamber, different types of burner
dimensions shown in date sheets, make sure that the wall of the chamber is strong
enough to support the weight of the burner.
If necessary, reinforce the area where you plan to install the burner to support the
weight of the burner.
Refractory furnace walls must allow for thermal expansion as recommended by the
refractory supplier – the wall should apply no stress on the burner block or
refractory layer surrounding the burner block.
If the combustor or burner block is shorter than the furnace wall thickness the block
or combustor should be pulled back into the wall. To prevent refractory overheating,
a 45° chamfer should be applied.
Make sure the ceramic fiber is filled between the burner and the chamber wall if
the gap is more than 20 mm.
10.6 Checklist after installation
To verify the system was properly installed, perform the following checks:
–Be sure there are no leaks in the gas lines.
–Be sure all the components, including the flame monitoring and control system,
pressure switch and wiring are properly installed.
–Be sure all components of the spark ignition system are installed and functioning
properly.
–Be sure the blower rotates in the proper direction. If the rotation is incorrect, have
a qualified electrician rewire the blower to rotate in the proper direction.
–Be sure all valves are installed in the proper location and correctly oriented relative
to the flow direction.

Anderson Thermal Solutions – ANX70 Burner Operation Manual
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10.7 Prepare for adjustment
After the installation of the burner system components is complete, the following steps
should be followed in order to prepare for adjustment:
–Set the air flow switch so that it drops out at 50% of the maximum pressure of the
combustion air blower.
–Set the low gas pressure switch at 50% below the gas pressure measured at the inlet
to the main gas valve train.
–Set the high gas pressure switch at 50% above the gas pressure measured at the
inlet to the main gas valve train.
–Try to ignite the burner before the purge and other timers have finished their cycles.
Make sure that the flame monitoring system indicates a flame failure.
–Trip out the pressure switches and other limit interlocks. Make sure that the main
gas valve train closes.
–If the simulated limit condition or the simulated flame fault cannot be responded at
the specified fault response time, the fuel system needs to be turned off to correct
the existing problems.
10.8 Burner commission
Special attention:
The ANX70 Series burners, described herein, are designed to mix fuel with air. All fuel
burning devices will cause fires and explosions if improperly applied, installed, adjusted,
controlled, or maintained. Do not bypass any safety feature, never try to light a burner
if it shows signs of damage or malfunction.
If adjusting the burner for the first time, must follow these steps:
1. Reset the system: Start combustion blower with valve fully open, close all the
automatic gas valves and manual gas cocks. Pay more attention to rotate direction
of blower.
2. Set the system to high fire, but DO NOT ignite the burner(s). Use the datasheet
from the appropriate ANX70 burner table to set the differential air pressure
needed at high fire.
3. Set the system to low fire air. Drive to low fire position. Measure pressure with
manometer set to 0.5 mbar. This is the initial setting only. Further adjustment may
be required.
4. Make sure all the settings are still the same after you cycle the system several times
between high and low fire.
5. Burner ignition: open all the manual shut off valves, make sure air blower is
running, automatic control valve is driven to low fire by flame controller, start
spark ignition, gas safety shut off valves open and flame on, flame signal feedback
to controller, adjust gas and combustion pressure by the opening gas/air control
valve till strong flame signal achieved.

Anderson Thermal Solutions – ANX70 Burner Operation Manual
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6. High fire gas setting: drive burner to high fire, set gas differential pressure between
burner and chamber according to the datasheet of relative type of burner. Then
drive the burner to low fire and back to high fire again, to check the differential
pressure. Make several recycles till the differential pressure remains the same.
7. Low fire gas setting: Drive the system to low fire. Setting low fire gas differential
pressure according to datasheet of relative type of burner This is target value for
low fire. Drive burner to high fire then go back to low fire, to check differential
pressure. Make several recycles of low and high fire change till the differential
pressure not change.
NOTE:It is very difficult to measure the very low pressures for low fire, and it may be
necessary to rely on visual inspection. This is especially true when gas turndowns is over
20:1. The main intent is to provide a stable flame with a good flame signal that will not
cause the furnace temperature to overshoot.
8. Verify the Gas Settings: Make sure that all settings are still the same after cycling,
the system several times between high and low fire.
10.9 Start burner
1. Start blower.
2. Open all the valves including automotive and manual valves.
3. Start ignition procedure.
4. Confirm the ignition procedure finished then control valve opening is controlled
by 4-20 mA.
10.10 Stop Procedure
Do not turn the combustion air blower off until the chamber temperature is below 80°C.
This will prevent hot gases from back flowing into the burner and blower causing damage
to the burner.
1. Stop the burner through the burner control system.
2. Run the combustion air blower until the chamber temperature drops below 80°C.
3. Turn off the combustion air blower.
4. Close all manual gas valves to the burner
5. Burner Maintenance
Preventive maintenance is the key to a reliable, safe and efficient combustion system. The
core of any preventive maintenance system is a list of periodic tasks. These are guidelines
only. The customer should make the final determination on maintenance intervals and
tasks to be performed while considering the working environment.
System regular safety audit must be taken out, including gas leakage checks no longer than
every half a year. If necessary, the frequency of audit should be increased. Leak detection,
control functions of the equipment must be included in the scope of audit. Only Anderson
technicians or those who are been trained and qualified by Anderson, as well as other

Anderson Thermal Solutions – ANX70 Burner Operation Manual
Anderson Thermal Soluions（Suzhou）Co. Ltd.
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relevant professionals, can maintain the burners. All valves, especially ball valves, must be
slowly open or close when switching in order to prevent pressure shock in pipe.
11. Burner Maintenance
Preventive maintenance is the key to a reliable, safe and efficient combustion system. The
core of any preventive maintenance system is a list of periodic tasks. These are guidelines
only. The customer should make the final determination on maintenance intervals and
tasks to be performed while considering the working environment.
System regular safety audit must be taken out, including gas leakage check no longer than
every half a year. If necessary, the frequency of audit should be increased. Leak detection,
control functions of the equipment must be included in the scope of audit. Only Anderson
technicians or those who are been trained and qualified by Anderson, as well as other
relevant professionals, can maintain the burners. All valves, especially ball valves, must be
slowly open or close when switching in order to prevent pressure shock in pipe.
11.1 Half-year checklist
–Inspect the flame sensing devices for good condition and cleanliness.
–Check for proper air and gas pressures.
–Test all the system alarms for proper response signals.
–Check and clean ignite electrodes.
–Check valve motors and control valves for free, smooth action and adjustment.
–Check for the proper operation of ventilation equipment.
–Test the interlock sequence on all safety equipment. Manually force each interlock
to intentionally fail while at the same time check if related equipment closes or
stops as specified by the manufacturer. Test the flame safeguard by manually
shutting off the gas to the burner.
–Test the manual gas shut off valves for proper operation.
–Inspect and clean the combustion air blower rotor. Clean and/or replace the
combustion air blower filter if applicable.
11.2 Annual checklist
–Leak test the safety shut-off valves and pipe for tightness of closure to make sure
no leakage.
–Test the pressure switch settings by checking the switch movements against
pressure settings and comparing these with the actual impulse pressure.
–Visually check ignition cable and connectors.
Be sure the burner bodies and combustor, nozzles, the ignitor and the flame sensors
are not damaged or distorted.

Anderson Thermal Solutions – ANX70 Burner Operation Manual
Anderson Thermal Soluions（Suzhou）Co. Ltd.
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12. Troubleshooting Procedures
Problem
Possible Cause
Solution
Cannot initiate a start
sequence
Air pressure switch has not made contact
Check air pressure switch adjustment.
Check air filter.
Check blower rotation.
Check outlet pressure from blower.
High gas pressure switch has been activated.
Low gas pressure switch has activated
Check incoming gas pressure, adjust if
necessary.
Check pressure switch setting and operation
Purge cycle not completed.
Check the flame safeguard system or purge
timer.
Malfunction of the flame safeguard system
(e.g., flame sensor failure or electrical noise
in the sensor line).
No power to the control unit.
Have a qualified electrician troubleshoot and
correct the problem.
Main power is off.
Be sure the main power to the system is
switched to the “on” position.
Start-up sequence
runs but burner does
not light
There is no power to the ignition
transformer
Restore the power to the ignition transformer
No power to ignition transformer or wire
broken between transformer and sparker
Check electrical connection between
transformer and sparker.
The igniter needs cleaning
Clean the igniter
The igniter is not correctly grounded to the
burner
Clean the threads on the igniter and the
burner. NOTE: Do not apply grease to the
threads on the igniter
Too much gas: Improper gas valve train
sequence
Verify solenoid valve is down-stream of
proportionator
Too much gas: Manual gas butterfly valves
have been opened too far
Check pressures and settings against start-up
report and adjust as necessary
Too much gas: Gas pressure out of the main
gas pressure regulator is too high
Check start-up setting. If necessary, remove
regulator and investigate.
Not enough gas: The gas pressure out of the
main gas pressure regulator is too low
Check start-up setting. Check regulator and
adjust it if necessary
Not enough gas: Start gas solenoid valve
does not open
Check solenoid valve coil for proper
orientation. Replace if necessary

Anderson Thermal Solutions – ANX70 Burner Operation Manual
Anderson Thermal Soluions（Suzhou）Co. Ltd.
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Not enough gas: Gas valve is not open, Not
enough gas. Air in the gas line
Check wiring to the automatic gas shut-off
valve. Check output from the flame
safeguard. Open gas cock. Purge gas line.
The low fire flame is
weak or unstable
Low fire adjusted too slow
Not enough gas
Incorrect air flow setting
Increase low fire gas setting. Check start-up
settings and adjust to increase low gas flow.
Check start-up settings. Investigate any
change, i.e. blocked filter, loose connections
The burner goes off
when it cycles to
high fire
Insufficient air (flame too rich)
Check start-up settings. Check air filter, clean
or replace if required
The burner is erratic
and does not
respond to
adjustment
Flame signal weak
Internal damage to the burner. Some parts
inside the burner may be loose or dirty.
Check condition of flame monitoring device.
Contact Anderson Thermal Solutions (Suzhou)
Co., Ltd.
The burner is
unstable or produces
soot or smoke
The air/gas ratio is out of adjustment
Measure all gas pressures and air pressures.
Compare to initial start-up settings, and
adjust them where necessary
Cannot achieve full
capacity
Air filter is blocked
Gas pressure is too low into the main gas
pressure regulator
Increase furnace/chamber pressures Poor
piping practices
Clean or replace the air filter.
Adjust gas pressure.
Re-check setup pressures
Contact Anderson

Anderson Thermal Solutions – ANX70 Burner Operation Manual
Anderson Thermal Soluions（Suzhou）Co. Ltd.
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13.Appendix
13.1 Training Record
Each trained person must verify that he has read and understood the contents of the
operating manual and know how to operate and maintain this series of burners correctly.
Manual Number and
Revision Date Who (Name) Signature
13.2 Bi-annual Audit Record
Routine audit must be made every 6 months. Please sign the following table.
Function Audit Date Inspector Problem description Next Audit Time
Flame sensor state
air and gas pressure
Alarm signals
igniter electrode
Control motors
Ventilate equipment
Interlock Function
Shut off cock function
Combustion air blower

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13.3 Annual Audit Record
Yearly audit list as follow but not only included
Function Audit Date Inspector Problem description Next Audit Time
Leak test
Pressure switch test
Cable and connectors
Burner bodies and air
wings
Attention：Safety audit is prohibited when burner is running, otherwise, an
accident could be caused!
If you have any questions. Please call us or send an e-mail to get more information
Our telephone no. is [phone]
Our email address is: [e-mail]
Meanwhile, you can also visit our website www.andtecs.com to get more product
information.