Burnertech Inverterjet Series Manual

BURNERTECH
Combustion Engineers Ltd
INSTALLATION / SERVICE / USER MANUAL
Inverterjet Burner Series –Ultra Low NOx Burners
MODEL PRODUCT CODE CLASS
Inverterjet 50M 91320 Modulating Pre-mix Burner
Inverterjet 90M 91323 Modulating Pre-mix Burner
367R17E02. 30.10.2018

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Content
1Declaration ................................................................................................................................................. 2
2Introduction ................................................................................................................................................ 4
2.1 General.............................................................................................................................................. 4
2.2 Unpacking......................................................................................................................................... 4
2.4 Modification...................................................................................................................................... 5
2.5 Burner Operation............................................................................................................................... 5
2.3 Installation......................................................................................................................................... 4
2.7 Removal from use............................................................................................................................. 5
3Technical Information ................................................................................................................................ 6
3.1 Technical Data .................................................................................................................................. 6
3.2 Technical Description of the Burner Parts........................................................................................ 6
3.3 Burner dimensions and weight.......................................................................................................... 7
3.4 Burner operation ............................................................................................................................... 8
3.4.1 Control operation........................................................................................................................ 8
3.4.2 Basic sequence of operation.................................................................................................... 8
4Installation.................................................................................................................................................. 9
4.1 General Installation Information....................................................................................................... 9
4.2 Burner Mounting..............................................................................................................................10
4.2.1 Standard Burner Mounting Detail...........................................................................................10
4.3 Gas Installation ................................................................................................................................11
4.4 Electrical Installation .......................................................................................................................12
4.5 Basic Electrical Safety .....................................................................................................................12
4.5.1 Burner Wiring Diagrams –Inverterjet 50/M & 90/M.............................................................13
5Commissioning......................................................................................................................................... 14
5.1 Commissioning procedure ...............................................................................................................14
5.1.1 Turning on the Burner ..............................................................................................................15
5.1.2 Commissioning operation ........................................................................................................15
5.1.3 Fan speed ..................................................................................................................................16
6User Instructions....................................................................................................................................... 18
6.1 Limitations on use of Burner............................................................................................................18
6.2 Using the Burner..............................................................................................................................19
6.2.1 Stand-by Mode..........................................................................................................................19
6.2.2 Burner operation .......................................................................................................................19
7Servicing................................................................................................................................................... 20
7.1 Service Inspection............................................................................................................................20
7.1.1 The condition of the burner head............................................................................................20
7.1.2 The condition of the electrodes...............................................................................................20
7.1.3 The condition of the electrical circuits....................................................................................20
7.2 Service operation..............................................................................................................................21
Burner head.............................................................................................................................................21
7.2.1 Re-assembly..............................................................................................................................22
7.3 Fault Finding....................................................................................................................................22
7.3.1 Lockouts/Blockings...................................................................................................................22
7.3.2 Error Code Descriptions (Visible using PC interface)..........................................................23
7.3.3 Windows PC USB interface ........................................................................................................24
7.3.4 Maintenance Notes...................................................................................................................25

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1 Declaration
The Inverterjet burner is a state of the art burner system.
Designed with imagination and passion using the very latest technology to provide
a reliable, hot, clean and compact gas heating solution.
A truly market leading product which is quite simply;
‘Taking Burner Technology into the 21st Century’.
Please read this manual before Unpacking and Installing the burner system.
Handle with Care.
The burner must be wired as detailed in the
Electrical Wiring Diagram in this burner manual.
For Burner Installation/ Operation advice please call: -
Burnertech Technical on 0044 (0) 1204 393222.
To ensure maximum product reliability, we advise and request that only a
Burnertech Approved Engineer who has attended our product course conducts the
1st burner commissioning. Failure to comply with this requirement may invalidate
your product warranty.
For Training, Service or Commissioning information please call: -
Burnertech Service on 0044 (0) 1204 393222.
This manual is provided as an integral part of the equipment and its delivery to the
end user is essential.
Please keep this manual for future reference, more copies of this manual are
available upon request.

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2 Introduction
2.1 General
Read this manual carefully BEFORE
unpacking the burner. It supplies important
information on installation, use, maintenance
and safety.
The burner must be installed by
competent personnel such as a Gas
safe/ACS registered gas installer in
compliance with ALL regulations in force
and ALL current local Regulations,
including any National or International
Standards that may apply and according
to the manufacturer’s instructions as
detailed in this manual.
Note: The manufacturer cannot be held
liable for injury to people and animals, or
damage to property as a result of improper
installation.
2.2 Unpacking
Carefully remove all the packing material.
Lift the burner out from within the carton and
inspect it for transit damage. You must
report any damage to your supplier
immediately.
If in doubt, DO NOT USE THE EQUIPMENT
and contact your supplier for further advice.
Note: In addition to the Burner Manual the
packaging also contains the Mounting
Gasket, required for correct installation of
the burner.
Note: All packing materials should be stored
or disposed of with care, as they may prove
harmful to children, animals and the
environment.
2.3 Installation
Before connecting the burner, make sure
that the burner rating matches the appliance
requirements and that both gas and
electrical services are adequately rated.
The burners are designed for use on 2nd
and 3rd Family Gases only. (NG & LPG)
The burner must be firmly secured to the
appliance during installation using the
burner mounting gasket supplied.
The burners are of the pre-mixed type and
MUST be installed in a purpose-designed
room with enough ventilation openings
complying with the current local Regulations,
including any National or International
Standards that may apply.
Note:
The burner MUST be connected to an
adequately sized gas supply. The pipe work
must ensure the minimum required dynamic
gas supply pressure is achieved when all
appliances are operating.
The gas supply MUST have an approved
isolation valve adjacent to the burner and
appropriate means of disconnection for
removal of the burner for service and repair.
The electrical supply to the burner MUST
have a suitable electrical isolation switch.
This is required to have a contact separation
of at least 3mm in all poles.
Before commencing cleaning or servicing
operations, first disconnect the equipment
from the mains supply and turn off the gas.
The burner MUST be adequately earthed
and installed as required by the current local
Safety and Electrical Regulations, and any
National or International Standards that
apply.

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2.4 Modification
When parts are replaced during servicing
only original replacement parts supplied
by the Burnertech must be used.
The equipment shall be used exclusively for
the purposes for which it is designed.
Any other use shall be considered improper
and therefore dangerous.
NOTE: The manufacturer cannot be held
liable, by agreement or otherwise,
for damages resulting in improper
installation and use, and failure to comply
with the instructions as detailed in this
manual.
2.5 Burner Operation
DO NOT operate the burners in dusty
environments for long periods of time or
whilst sweeping the boiler plant room.
Dust ingress will cause premature clogging/
blocking of the burner combustion head
leading to reduced heat input and
heightened potential for burner failure.
If there is the chance for dust ingress please
contact Burnertech for advice on the fitment
of a filter.
To ensure the efficient and proper operation
of the equipment, it is essential that
maintenance operations be carried out at
regular intervals by suitably qualified and
competent personnel, according to the
manufacturer’s instructions as detailed in
this manual.
Always ensure that inlet or exhaust grilles
are unobstructed, and filters cleaned
regularly.
The Maximum operating conditions for the
Gas Valve and Electronic Control are 60⁰C
and 90% RH at 40⁰C non-condensing
2.6 Servicing
Burnertech recommends a 12-month service
interval unless operating in a particularly
dirty/ dusty environment.
In case of breakdown and/or defective
operation, turn off the burner gas and
electrical supply.
Warning: DO NOT attempt to repair the
burner head. If the burner is damaged,
please contact Burnertech for advice.
Failure to comply with these requirements
may impair the equipment’s performance
and safety.
2.7 Removal from use
When it is decided to discontinue the use of
the burner, the user shall arrange for
suitably qualified and competent personnel
to carry out the following:
a. Isolate the electricity.
b. Isolate the gas.
c. Fix a warning label in place on the burner
stating that the burner is out of use and
isolated.
Always observe caution with hot burner
components. If any parts become hot during
operation they will remain hot for some time
after the burner has stopped.
In cases where the equipment is transferred
to another user, the original user should
ensure that this manual accompanies the
equipment at all times for future reference.

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3 Technical Information
3.1 Technical Data
MODEL INVERTERJET 50/M INVERTERJET 90/M
Type Pre-Mix Burner Pre-Mix Burner
Fuel Natural Gas/LPG Natural Gas/LPG
Power Min-Max [kW] 10-50 18-90
Modulation Range 1:5 1:5
Nominal Voltage Range [VAC] 120/230 120/230
Frequency [Hz] 50/60 50/60
Phase 1 ~ 1 ~
Fan Current Draw Max [A] 1.9 1.9
Gas Connection 1/2 “BSP 1/2 “BSP
Gas Pressure Min - Max [mbar] 10 –60 10 –60
3.2 Technical Description of the Burner Parts
The Inverterjet 50M and 90M have the following technical description of the parts.
1 Controller
2 Gas Connection Flange
3 Fan Housing
4 Inverterjet Burner Head
5 Ignition Electrode
6 Venturi
7 Gas Valve
8 Ionisation Probe (Not shown)

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3.3 Burner dimensions and weight
The diagrams below show the major dimensions and weight of the burner.
MODEL A B C D1 D2 H L W Weight
mm mm mm mm mm mm mm mm kg
Inverterjet 50/M 92 71 91 Ø101.6 Ø170 244 365 238 5.6
Inverterjet 90/M 92 71 121 Ø101.6 Ø170 244 398 238 5.9

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3.4 Burner operation
3.4.1 Control operation
The microprocessor-based burner controller is made for fan assisted, direct burner ignition
applications. Versions are available for 120 and 230 volts, 50-60 Hz.
The control powers the gas valve and DC-fan. Normal heat demand is given by a 120 or 230 VAC
switch input (depending on the model)
After heat demand and successful ignition, modulation can be controlled by external 0 - 10V or
4 - 20mA signal (50M).
3.4.2 Basic sequence of operation
The Normal Heating mode is started when the High Voltage Heat Demand input is closed. When
ignition is successful, the fan can be controlled in a number of ways depending on parameter
setting:
•0-10 V control, a DC voltage between zero and ten volts can be applied to connector (X3
Pins 8 & 16). At zero volt the fan will run on Minimum Fan speed. At ten volt the fan will run
on Maximum Fan speed.
•4-20 mA control, with an external resistor of 500 Ώ1 % placed between connector (X3
Pins 8 & 16), the fan speed can be controlled with a current in the range of 4 to 20 mA.
At 4 mA the fan will run on Minimum Fan speed. At 20 mA the fan will run at Maximum Fan
Speed.
•On/Off control, when the option On/Off control is selected, the fan speed depends on the
fan Slope control parameter: When slope control is off (parameter set to zero), the fan
speed will immediately go to maximum. Otherwise the fan speed will rise from Ignition Fan
speed to Maximum Fan speed with(value)*50 RPM/sec. Slope control works for both
increasing and decreasing of fan speed.
3.4.2.1 Burner Program

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3.4.2.2 Lock-out reset
The Control can be reset by depressing the internal/external reset button
4 Installation
4.1 General Installation Information

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4.2 Burner Mounting
To mount the burner, suitable mounting studs or threads for bolts need to be provided for the burner
Mounting Plate. Appropriate dimensions are shown below. When installing the burner, please be
sure to use the gasket provided for sealing and insulating between the Mounting Plate and the
bearing wall of the appliance.
4.2.1 Standard Burner Mounting Detail
Model F G R 2R
mm deg. mm mm
Inverterjet 50/M 138 45  4.5 9
Inverterjet 90/M 138 45  4.5 9

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4.3 Gas Installation
To Install the Gas supply to the Burner, follow the instruction bellow:
1. Remove the seal in front of the Gas connection flange at the rear of the burner
2. Check the thread on the flange and ensure that there is no debris in the threads
3. Connect the corresponding gas pipe/fittings to the Gas connection flange in the Burner.
4. Tighten the gas pipe/fittings and the Gas connection flange securely, ensuring that there is
no possibility for gas leakage.

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4.4 Electrical Installation
The electrical wiring diagram for the Burners are shown in the following page.
4.5 Basic Electrical Safety

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4.5.1 Burner Wiring Diagrams –Inverterjet 50/M & 90/M
X3 Microfit
*X2 Communication
(see note)
X1 Minifit

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5 Commissioning
5.1 Commissioning procedure
To start the commissioning procedure, follow the steps bellow:
1. Connect a Manometer to the gas inlet pressure test nipple on the burner gas inlet
connection.
2. Locate CO/CO2combustion analyser into flue pipe as close as possible to the appliance
outlet.
3. Confirm and record that adequate ventilation is available for the safe operation of the
burners.
4. Establish that the system pipe work is complete, full, purged and adequate system load and
circulation exists to facilitate firing of the burners.
5. Turn ‘On’ the gas supply and ensure adequate static gas pressure is available at the burner
inlet.
6. Locate the position the position of the Throttle adjustment screw (High rate throttle adjuster)
7. Locate the position of the Offset adjustment screw (Low rate offset adjuster).
1 Throttle Adjustment Screw
2 Offset Adjustment Screw
3 Reset Button
4 Indicator Light (Alarm)

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5.1.1 Turning on the Burner
Turn ‘On’ the main electrical supply and turn on the burner demand interlock/switch.The burner fan
will start and pre-purge. The burner Control will then drive the fan to a pre-set ignition speed. The
ignition spark is generated at this point and the Burner will ignite. The 0-10V temperature control (if
used) will then modulate the Burner to the desired output.
5.1.2 Commissioning operation
We recommend that the operating CO2is -0 +0.5 % higher at maximum fan speed than at
minimum.
Check this by driving the burner up and down using the 0 –10V signal or alternatively, if available,
the dedicated Windows PC software to control the fan speed.
Ensure that all combustion readings are within the required tolerance and if an appropriate gas
meter is available to conduct a heat input measurement whilst operating at maximum rate to ensure
the rate is within +/-5% of that required for the appliance. If the heat input is outside the required +/-
5% tolerance, adjust the fan speed until a satisfactory input is achieved.
Ensure all Combustion, Input and Working Gas Pressures are recorded and return the burner to
normal run condition.
5.1.2.1 Maximum rate CO2
The Maximum CO2may be adjusted by use of the Throttle screw on the venturi, turning clockwise
decreases the value and anti-clockwise will increase.
5.1.2.2 Minimum rate CO2
Minimum CO2 should be adjusted by using the regulator on the gas valve (ideally with the use of a
Micromanometer) to help ensure that it is set accurately as this is a sensitive adjustment.
Remove the T40 Torx cap and turn the screw anti-clockwise to decrease the CO2and clockwise to
increase.

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5.1.3 Fan speed
Unless prior knowledge of the application is available or alternative speeds are requested, each
burner is pre-programmed with the following fan speeds:
INVERTERJET
50
90
Maximum
5850 rpm
8500 rpm
Minimum
1500 rpm
1500 rpm
Ignition
30%
5.1.3.1 Fan speed adjustment
The following flowchart (Fan speed control flowchart) shows how the fan speed is controlled during
a complete burner sequence. The basic states are:
•Stand-by, fan is off or at Continuous Fan speed when this option is selected;
•Pre-purge;
•Ignition;
•Run state, fan speed is controlled by modulation input, see section “Normal heating mode”.
•Post purge.
The desired fan speed in Continuous and Ignition mode can be independently programmed.

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Flow chart –fan speed

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6 User Instructions
6.1 Limitations on use of Burner

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6.2 Using the Burner
6.2.1 Stand-by Mode
In Stand-by mode igniter is off, gas valve is closed, and fan is off if fan overrun time is finished and
Continuous Fan speed option is switched off.
6.2.2 Burner operation
Turn ‘On’ the main electrical supply and turn on the burner demand interlock/switch.The burner fan
will start and pre-purge. The burner Control will then drive the fan to a pre-set ignition speed. The
ignition spark is generated at this point and the Burner will ignite.
If satisfactory ignition takes place, the burner will remain alight and the fan speed will modulate in
response to the modulation signal input.
If however satisfactory ignition does not take place, the burner will go through ‘Post-purge’ and
‘Pre-purge’ before re-attempting ‘Ignition’.
This re-cycling will take place three times (depending on the settings) before the burner will enter a
Lock-Out condition which will require manual reset by the user by depressing the Reset button to
restart the burner ignition sequence.