Ecotec A4 Operation And Maintenance

Operation and
maintenance
A4 Pellet burner

MANUAL FOR A4 MODEL WITH MAX. OUTPUT 20 kW

1

1-14-3009E
2005-03

Store this manual somewhere easily

accessiblefor future use.

Please read through the manual carefully
before starting up your EcoTec pellet system.

The output of your pellet burner is calcu­lated according to the maximum quantity of
pellets that can be fed in and burned in the
burning cup in 1 hour, (refers to firing using
normal wood pellets as an average of our
fuel specification).

For larger output requirements (between 25­300 kW), contact Sahlins EcoTec AB.

IMPORTANT!

The burner’s green protective cap and the lid of the control unit

must not be removed unless the voltage (main power) to the

system has been switched off.

The guarantee is valid provided that the product is installed by an

authorised EcoTec dealer.

FOLLOW THE INSTRUCTIONS IN THE MANUAL CAREFULLY AND CARRY

OUT THE RECOMMENDED CARE AND MAINTENANCE.

2

CONTENTS

OVERVIEW OF THE BURNER

OVERVIEW OF THE CONTROL PANEL

FUNCTIONAL DESCRIPTION

EASY TO MANAGE

SAFETY CHECKS/ALARMS

CONTROL SYSTEM / OPERATION

INSTALLATION

CONNECTION TABLE

TROUBLESHOOTING

MAINTENANCE

ADVICE ON FUEL PELLETS

GUARANTEE AND COMPLAINTS

OPERATION LOG

PAGE 4

CONTENTS

PAGE 5

PAGE 6

PAGE 8

PAGE 9

PAGE 10

PAGE 16

PAGE 18

PAGE 20

PAGE 22

PAGE 23

PAGE 24

PAGE 25

3

11

12

14

13

9

8

7

4

1

3

17

21

OVERVIEW OF THE BURNER

1 Burning cup

2 Rotary arm

3 Gear ring

4 Primary ring

5 Stop screws, burning cup

6 Primary air pipe

7 Secondary air pipe

8 Hot-air ignition

9 Optical sensor

10 Combustion fan

11 Release gate

2

5

3

6

6

13

19

20

8

5

12 Internal fuel store

13 Drive motor

14 Level sensor (receiver), black

15 Level sensor (transmitter), white

16 Connector

17 Feeder screw

18 Thermal contact

19 Microswitch

20 Quick-release bracket

21 Swivel arm bracket

10

18

16

11

15

4

10

1

2

OVERVIEW OF THE CONTROL SYSTEM

3

4

11

5

6

7

8

9

Control box 3006

1 Start

2 Stop

3 Display

4 Control buttons for display manipulation

5 Input operational thermostat cable

6 Input Max. thermostat cable

7 Input Lambda probe (optional)

8 Input/Output multi-unit cable for the

burner

9 Input voltage 230/240 VAC

10 Output external feed

11 Cover, terminal block

5

FUNCTIONAL DESCRIPTION

PELLET FIRING

Pellet firing with EcoTec’s pellet burners is
extremely similar to oil firing. A pellet
burner requires only slightly more main­tenance than an oil burner. We recom­mend maintenance measures such as
prudent sweeping of the boiler.

EcoTec pellet burners are supplied as
standard with automatic ignition, but
can always be lit manually.

FULLY AUTOMATIC

Operation of the burner and associated
feedersystems is fully automated and is
controlled via an in-built thermostat.
Complete combustion takes place in a
cost-effective and environment-friendly
way by means of preset oxygenation
using primary and secondary air.

The burner can be adjusted for fuel with
varying energy content.
See fuel specification, page 23.

The burner’s control unit is preprogram­med and has default settings. The instal­lation engineer can fine-tune the control
function to optimise combustion in the
boiler with regard to the fuel being used.
Fuel feed of pellets from the external fuel
store to the burner is fully automatic; it
employs a feedersystem that is adjusted
and controlled via the burner’s control
unit.

The burner can also be supplemented
with O2-regulation (lambda probe - this
requires a fully sealed boiler). The burner
then adjusts automatically to maintain
optimum combustion in relation to fuel
quality and actual energy consumption.
See separate manual.

6

PELLET
STORE

THE FEEDER SYSTEM

The feeder system is based on the safety
principle of interrupting the flow of fuel
by free fall (in the hose) between the
external feed and the burner.

NB AN ECOTEC BURNER MUST
NOT BE COMBINED WITH ANY

FEEDER SYSTEM OTHER THAN AN

ECOTECORIGINAL FEEDER

SYSTEM.

ASH REMOVAL

All combustion of solid fuel, even if it
takes place in the automated system
employed by EcoTec pellet burners,
requires maintenance and servicing. The
majority of the maintenance relates to
the fuel and its quality; see comparison
below. Good pellets contain no more
than 0.5% ash, meaning that ash only
needs to be removed every 3-4 weeks,
depending on boiler type. Pellets with
2% ash produce enough ash to require
weekly ash removal under the same
conditions.
Switch off the burner using the STOP
button; wait until firing has died down and
the burner has stopped. Wait a further
30 mins to allow the burner to cool.

NB Do not switch off the main power

FUNCTIONAL DESCRIPTION

switch until maintenance is ready to
commence.

The following measures and checks
should be performed each time ash is
removed to ensure safe, trouble-free
operation, or at least once a month until
you have the necessary experience to
judge required maintenance intervals.

A plastic ash collector that can be con­nected to an ordinary vacuum cleaner is
available as an optional accessory.
A sheet-metal version is also available with
built-in suction fan.

NB ALWAYS EXERCISE CAUTION

WHEN HANDLING ASHES, AS

THEY MAY BE HOT.

7

EASY TO MANAGE

EASY TO MANAGE

Pellet burners from EcoTec are designed
in line with the main principles we are
accustomed to for oil-fired heating. The
benefit of these main principles is con­venient handling, where the location of
the fuel store is not being restricted by
the design of the boiler room. In terms
of safety, separation of the burner and
fuel store, in combination with a non­continuous fuel feed between them
provides increased protection against the
spread of fire in the event of backburn­ing.

Damage resulting from incorrect hand­ling, or poor function or installation will
be limited to the burner’s internal fuel
store.
In short, the internal store is only refilled
with a limited quantity of fuel via the
external feeder system at each filling.
Fuel is fed through a tight-fitting outfeed
that is synchronised with the external
feed process.

A thermal contact, located just outside
the boiler on the fuel feed pipe, detects
any heat spreading back into the fuel
feed pipe towards the internal store.
Should this occur, fuel already present in
the fuel feed pipe will be fed into the
boiler immediately, and refilling of the
internal store will cease.

The burner’s control unit is linked to the
boiler’s maximum thermostat.

In the event of an error on the opera­tional thermostat, the maximum thermo­stat will step in and prevent the boiler
from overheating.

The burner is also designed to revert to
normal operating mode following opera­tional disruptions such as a power cut,
fuel interruptions, etc. If this process
fails, this is indicated in the display and
the burner switches off.

8

THE FOLLOWING MUST ALWAYS BE CONSIDERED AND CHECKED

1 The main power switch must always

be on.

2 Connections between burner and

external feeder system must be prop-

3 The release gate’s wings must not be

damaged or discoloured and it must
form a tight seal against the walls of
the feed chamber.

erly mounted and tight.

ALARMS

If a breakdown occurs, this is indicated by text in the display.

There are eight different alarm messages. To remove alarm texts:

Alarm text Description

Max. thermostat

Burner NOT in place

Back heat

The burner has stopped because the max. thermostat has been
triggered.
The burner can be restarted using START once the max. thermostat
has been reset.
NB This function interlocks (in the hardware) all motor
operations and ignition.

The burner has stopped because the burner and boiler have
separated. The burner can be restarted using START once the system
has been correctly refitted.

The burner has stopped because the thermal contact on
the feed pipe has been tripped. The internal motor runs continuously
for 15 min. The burner can be restarted using START once the thermal
contact is reset.

SAFETY CHECKS / ALARM

Min. Temp. Stop

Ignition error

No Flame

Fault Ext. Feed

External Alarm

The burner has stopped because the boiler temperature has
fallen below the set minimum value.
The burner is restarted using START

The burner has stopped because the set number of ignition attempts
have failed.
The burner can be restarted using START once the fault has been
dealt with.

The burner has stopped because the fire has gone out.
The burner is restarted using START

The burner has stopped because the external feed has run for too
long without any fuel having been fed.
The burner can be restarted using START once the fuel is refilled and
fed into the burner.

NB Option!
The burner has stopped because the external unit (e.g. smoke detec­tor) has been tripped.
The burner can be restarted using START once the fault has been
dealt with.

9

Important information

NB To avoid hazardous situations, the feed current must always be switched
off before you touch any part of the equipment. Only authorised persons may
carry out changes or repair the equipment.

The manual is intended for authorised persons. It describes adjustments to many basic
functions in the burner. If these adjustments are used incorrectly, serious operating
problems and hazardous situations may arise.

NB When the control system is started, the processor part is always discon­nected for around 180 seconds to allow any O
be used. If you want to bypass the countdown, press STOP once.

sensor to heat up before it can

2

CONTROL SYSTEM / OPERATION

Parameter changes
in the control system
are made using the
built-in menu sys­tem.

Button

Description

Used to start the burner

Used to stop the burner

Used to move up through a menu and to change a parameter
to a higher value. Removes information texts, e.g. alarm.

Used to move downwards through a menu and to change a
parameter to a lower value.

Used to select a submenu, select a parameter and
confirm a changed value

Used to return to a previous menu. Used when changing a param­eter to return without changing the value.

10

In the menus, the cursor

is used to highlight the command line that can be changed.

When a parameter is changeable, the cursor changes from to .

The control system may be in one of the following modes: Start, Operation, Standby
or Stopped.
When O
When O2 is inactive MAN is shown.

is activated, XXX% (modulation) is shown in the top line of the display.

2

Menu structure

Condition: Operation 85%

Temperature 60°C

(Optional) 9.0%

O

2

Act. Run Time 7 s
Act. Stop time 3 s
Required O2 (Optional) 8.5%
Setting

Main Menu

Ignition

Start

Operation

Standby

O

(Optional)

2

Reset all No

Ignition menu

Optical sensor 1

CONTROL SYSTEM / OPERATION

Start menu

Run Time Int. 6 s

Stop Time Int 4 s

Operation menu

Operating temp. 65°C

Run Time Int. 7 s
Stop Time Int. 3 s
Cleaning time 6 h

Min. temp 20°C

Time before stop 10 m
Standby below 20%
Time below 10 m
Run Time Ext. 30 s
Start External No
Manual time 1 m

Pause menu

Run Time Int. 0 s

Stop Time Int 999 s

Delayed action 60 s

11

O2 menu (Optional)

O2 control NO

O

2

Calibrate O

2

8%

NO

IGNITION SETTINGS

Use the arrow keys to access the Ignition
menu as per the structure tree on page 11.

Optical sensor: Signal level when optical
sensor indicates flame• For O
alternative flame indication may be acti-

control an

2

vated: This means that at O2 regulation,
the O2-signal is used initially to indicate
flames.

START MODE

Press the START button to start the burner.

CONTROL SYSTEM / OPERATION

The system’s start-up sequence is acti­vated.
If the START button is held down, the
input feed screw is activated for 15 sec.
and fuel is fed into the burning cup.
The burner can be ignited manually or
automatically. If no flame is registered at
start-up, the automatic ignition sequence
begins and ignites the burner.
Once a flame has been registered, the
burner switches from Ignition Mode to
Start Mode and then to Operating Mode.
Use the arrow keys to access the Start
menu as per the structure tree on page 11.

OPERATING MODE

When the O
burner’s combustion fan and input feed

-regulation is activated, the

2

screw are controlled in order to achieve set
values for system temperature and percent­age O2-content. The current stop time and
run time of the internal screw can be read
from the main menu. If the O2-regulation is
not activated, the burner goes into standby
mode once the set system temperature of

+6°C has been reached.

Use the arrow keys to access the Operation
menu as per the structure tree on page 11.

Operating temp: The required system
temperature is specified here.

Run Time Int: Indicates the run time of the
internal screw. With the O2-regulation acti-

vated, the maximum run time is limited to
twice the value indicated here.

Stop Time Int: Indicates the stop time of
the internal screw.

Cleaning time: Indicates at what interval
the burner fan will operate at 100% for 30
sec.

Run Time Int: Indicates the run time of
the internal screw during the start se­quence.

Stop Time Int: Indicates the stop time of
the internal screw during the start se­quence.

STOP MODE

Pressing the STOP button once stops the
burner and the combustion fan continues
for a set time. Factory setting is 1 min. If
you press the STOP button twice, the fan
also stops. The display indicates that the
system is in stopped mode.

Min temp: For manual operation without
O2-regulation, the system’s min temperature
is indicated here. If the system temperature
falls below this level, the burner will stop.
The burner will also stop if the optical sensor
cannot indicate the flame or, with O2-regula­tion, if the O2-content exceeds 18% for
more than 5 min.

Time before stop: Indicates the time the
optical sensor must be without light for the
burner to stop and an alarm to sound. It is
also the time the system temperature must
be below the Min temp for the burner to
stop and an alarm to sound.

12

Standby below: Indicates modulation in %
the burner must fall below in order to switch
to standby mode. It is also the level that
must be exceeded for the burner to switch
back to operating mode. Only used when
the O

-regulation is activated and can be set

2

between 5 and 50%.

Time below: Indicates the length of time
the modulation must fall below Standby
below for standby mode to be activated.

Run Time Ext: Indicates the run time of the
external screw. The external screw starts
when the level sensor is activated and stops
when the time has expired. NB During the

run time the external screw is synchro­nised with the run times of the internal
screw.

STANDBY MODE

Once the system reaches the set temperature

+ 6°C or the percentage modulation is less

than the set value the burner switches to
standby mode. In standby mode the pilot
light is activated.

Once the temperature has dropped 2°C

below the set value or the percentage modu­lation has risen over the set value, the burner
switches back to operating mode.

Use the arrow keys to access the Standby
menu as per the structure tree on page 11.

Run Time Int: Indicates the run time of the
internal screw. If the set operating tempera-

ture is exceeded by 8°C, this time is reduced

to one third of the set value. If the value is
“zero” this means that the pilot light func­tion is switched off.

Stop Time Int: Indicates the standby time of
the internal screw.

Delayed action: Indicates how long the
burner fan will run after the run time of the
internal screw. When the burner switches
from operating mode to standby, the burner
fan will also run for the time set here.

O2-SETTINGS

If O

-regulation is activated, certain pa-

2

rameters for this function can be adjusted
by the user. The current O2-content can
be read from the main menu.

Use the arrow keys to access the Standby
menu as per the structure tree on page

11.

O2 control: Use this to select whether O2-
regulation should be activated (YES) or
not (NO).

O2: Here the required O2-percentage
content for 100% combustion air is set.
TM3006 recalculates the required O2­content in relation to the combustion air,
which means that the O2-content rises
when the combustion air reduces.

Calib. O2 sen: By selecting YES, the O2-
sensor is calibrated. In order to do this,
the O2-sensor must be in circulating air
(21% oxygen) and the control system
must have been switched on for at least
three minutes, so that the sensor can
reach the correct temperature. Once
calibration is complete the text shows O
Calibration OK. If the O2-sensor does not
produce a fixed signal on calibration,
control box 3006 judges that the sensor
is wrong and continues using the old
stored values. If this happens, the O2­regulation must be disconnected and the
old sensor replaced with a new one be­fore this function is used again.

For further instructions regarding the use
of O2-regulation, see the separate manual

RESET

Use the arrow keys to access Reset as per
the structure tree on page 11.
If YES is selected, all parameters in the
burner’s control system will be reset to
their factory settings.

CONTROL SYSTEM / OPERATION

2

13

FILL EXTERNAL SCREW WITH FUEL

First fill the external screw. Remove the
downward hose from the burner. It may
be useful to put a bucket under the
hose.
Set the estimated number of minutes
using the parameter Manual time and
start the external screw. The screw will
operate for the set number of minutes. If
you want to stop it early, press STOP.

Reattach the downward hose to the
burner.

STARTING THE BURNER

Press START. The burner makes 3 ignition

CONTROL SYSTEM / OPERATION

attempts with 2 min fuel feed before
each attempt. After that there will be an
alarm Ignition error. Remove the alarm
text with

and start again. This
sequence should be repeated until the
burner feed pipe is full and there is fuel
in the cup.
At this point the burner will ignite auto­matically.

During the ignition sequence, the display
indicates which phase the burner is in.

DESCRIPTION OF THE BURNER’S
NORMAL IGNITION, OPERATING AND
SHUT DOWN SEQUENCE

Factory setting

A non- running burner is indicated by
the text STOPPED in the display

•START button, Fan for 20 s. to check
if there is a flame.

• If flame=> Start mode, the burner
runs at 60% for 2 min.

• If no flame=>Ignition mode

• Ignition mode=The fan stops, the
ignition element starts, material is fed
in for three minutes. When the feed/
dosing is complete, the fan starts at
low speed and increases to maxi­mum. The ignition element and fan
run for 6 min. If there is no flame, the
ignition sequence is repeated a maxi­mum of 3 times. If there is still no
flame indicated in the system Ignition
error The ignition sequence is indi­cated with the text Ignition attempt X

• When a flame is indicated, the igni­tion sequence stops and the start
sequence commences. Indicated with
text Start.

• Start mode, the burner runs at 60%
for 2 min.

• When heating is complete, the
burner transfers to the set operating
mode. Indication with text Operation.

• In operating mode the normal dis­played is MAN. This indicates that
feed times are fixed.

When O

figure is shown instead, indicating the

-regulation is activated, a %-

2

current percentage modulation sup­plied by the burner.

14

• The burner fan has a delayed running
time of 60 s.

• At rest, no pilot light. Indicated with text

Standby

• When the temperature falls and the
system calls for heat = normal start

• In manual mode (NO O

burner works the temperature up to 6°C

-regulation) the

2

over the set value. Once the temperature

has fallen 2°C below the set value, the

burner starts again.

• For O

-regulation, the burner works to

2

maintain continuous combustion. The
burner’s output power adapts to the
current energy consumption. So-called
adaptive regulation.

For further instructions regarding the use of

-regulation, see the separate manual.

O

2

EXTERNAL FEED

The external motor is controlled by the
level sensor, the set run time coincides
with the internal motor

RESTART

If the burner was in operating mode (=
started) before the power cut, it restarts
automatically when the power resumes.

INPUT POWER

The burner is pre-installed with a maxi­mum output of around 14.7 kW. The
dealer can, if necessary, customise the
maximum output between 12 and 20
kW. The input quantity of fuel may be
easily adjusted to compensate for varying
fuel quality.
The recommended values are tested
using 8 mm pellets. NB! The pellet qual­ity has a significant effect on the result.

CONTROL SYSTEM / OPERATION

Fan Output Feed Note

100% 20 kW 60/1

90% 18 kW 9/1
80% 16 kW 8/2
70% 14 kW 7/3 Factory setting

65% 12 kW 6/4

15

ENCLOSURE AND ASSEMBLY

The enclosure consists of a plastic box
with a separate connection section.

The top lid must NOT be opened. It
provides mechanical and electrical
(static electricity) protection for
the printed circuit card.

If this part is opened without the
approval of EcoTec, ALL guarantees
will cease to be valid.

The unit is fitted on a vertical wall using
three screws. For the upper fixing point

INSTALLATION

there is a recess for the screw head on the
rear of the box. Recesses for the two other
fixing points are under the lower lid of the
box (connection part).

MAIN SWITCH
The system must be equipped with a

main switch.

HUVUDBRYTARE
(Pelletsbrännare)

The unit contains no parts (except a
fuse) that can be replaced by non­professionals.

A defective unit must always be returned
to the manufacturer.

Max. ambient temperature is 40°C.

CONNECTION INSTRUCTIONS

The control system is connected to the
home’s distribution box using a permanent
installation.
Feed current: 230 VAC
Max. fuse: 10 A

The box contains screw-type connection
terminal boxes.

TRANSIENT PROTECTION

In order to protect the control system
against disturbances, additional compo­nents (the relay, solenoid valves etc.)
should be transient-protected. (The DC
relay and solenoid valves with a diode and
the AC relay and solenoid valves with an
RC filter.)

FÅR ENDAST

BRYTAS VID

SERVICE

IMPORTANT

• Connect the box with phase and zero in
the right place. This does not affect the
functions, but as the zero runs unbroken
to the motors, there is a risk that there
will be full voltage at the motors when
you think it is switched off.

• Check that the load on the outputs
never exceeds the system’s total maxi­mum load for the outputs (2000 W).
Max. load per output is 1000 W.

Max. load (resistive) on the alarm output
(potential-free relay output):
1 A, 230 VAC, 30 VDC

16

THE MAIN SWITCH MUST

ONLY BE SWITCHED OFF IN CONNECTION

WITH SERVICING AND MAINTENANCE.

Connecting an alarm unit

A buzzer or light is connected to the
potential-free contact, connection termi­nal board K1 and K2.

REMEMBER TO SWITCH

ON THE MAIN SWITCH WHEN

SERVICING IS FINISHED.

Max. thermostat

The max. thermostat cable is prein­stalled on connection terminal board 4
and 14 in the control system.
Connected to the system’s max. ther­mostat.
The max. thermostat must be equipped
with a manual reset.

Operational thermostat

The operational thermostat consists of
a separate temperature sensor and
cable. For installation on connection
terminal board 5 and 15 in the control
system. The cable can be extended, if
necessary, but should not be short­ened.
The temperature is measured ana­loguely.
The sensor should be fitted to the
plunge pipe to ensure correct tempera­ture measurement.

The standard units are adapted for a
drive voltage between 12 and 24 VDC.
A cable is connected from connection
terminal board 13 (+VDC) to K1. (Con­nection terminal board 13 can also be
used in connection with the feed to the
external alarm unit, such as a flue detec­tor.)
The alarm unit is connected between
connection terminal board K2 and 18
(–VDC). (Connection terminal board 18 is
also used to connect the O2-sensor.)
See connection table page 18-19.

Burner wiring

The multiconductor for the burner is
preinstalled in the control system. The
switch is connected to the left side of the
burner.

Microswitch

The burner’s assembly on the boiler is
monitored using a microswitch.

INSTALLATION

17

CONNECTION TABLE FOR CONTROL BOX 3006

CONNECTION TABLE

Control cabinet

Max. thermostat

Operating temperature

Lambda probe

Incoming feed

18

External screw

Multi-unit cable

*) M:x = Multiconductor for burner
T:x = Thermostat cable for max. thermostat S:x = Operating temperature

Burner

Black
Black
Red +
Black ­Red +
Black ­Brown
Brown
Red
Red
Blue
Blue
White
White
Orange
Orange

Green/yellow

Burner fan

Level sen.trans

Level sen.rec.

Optical sensor

Internal motor

Thermo gauge

Ignition element

Limit position

CONNECTION TABLE

19

TROUBLESHOOTING

The majority of all faults that may arise
are a direct result of defects in the pellet
quality, and its handling or storage.
Therefore, check your supply carefully.
Preferably before you receive it.
Remember it is for your safety that we
preprogrammed the burner to stop and
emit an alarm if it cannot rectify the fault
itself.

FAULT: No text in the display

CHECK: That the main switch is on and

TROUBLESHOOTING

that the current (F1=250 mA) in the
burner’s control unit is complete.

ACTION: Turn on the main switch or
replace the broken fuse in the control
unit. NB Switch off the main switch
when replacing the fuse. Contact an
installation engineer.

The alarm text: * Back heat *

CHECK: Check if the resettable thermal

contact has been tripped.

The alarm text: * Max thermostat *

CHECK: If the boiler’s maximum thermo-

stat has been tripped.

ACTION: Reset the button on the boiler’s
maximum thermostat and restart. Com­mon causes are wood burning in com­bination with pellet burning. If the cause
of overheating cannot be established,
the operating temperature sensor must
be checked.

The alarm text: * No Flame *

The burner has received an order to stop
because the optical sensor indicated that
it cannot see light in the combustion
chamber during operation.

CHECK: That the combustion chamber is
not full of ash.

ACTION: Remove the ash.

CHECK: That the optical sensor or opti-

cal sensor pipe is not sooty and thus
cannot detect light.

ACTION: Press the button on the top of
the thermal contact. Switch off the main
power.

ACTION: Change the release gate’s
wings if they are discoloured or mis­shapen.

ACTION: Check that the flue damper is
not fully open and that the boiler’s flues
are free from fly ash.
Fit backdraft damper.

ACTION: Wipe the optical sensor. If
correctly installed, the optical sensor
should not become sooty between nor­mal inspections. Air leakage or the
burner being too close to a cooled com­bustion chamber surface causes soot to
collect, as does poor air supply to the
boiler room. Deal with this as soon as
possible. If incorrectly installed, the
optical sensor may also overheat and
stop detecting light. Contact an installa­tion engineer if you suspect incorrect
installation.

20

CHECK: Start the burner and check that
both the drive motor and outfeed shaft
and screwshaft turn round in the burn­ing cup.

The alarm text: * Error Ext. Feed*

This fault is due solely to a lack of fuel in
the burner’s internal store.

ACTION: In the event of a fault, contact
an installation engineer.

CHECK: Whether or not the internal
store’s level sensor indicates low fuel
level.

ACTION: Start the burner and check that
the external screw starts and feeds fuel
to the burner. If it does not, the level
sensors have reacted to counter pressure
in the system and stopped the fuel feed.
Open the boiler damper and clean fly ash
from the flues. A poor draught is often
the result of a defective chimney, which
should be dealt with as soon as possible.
Even brick chimneys with large cooled
surfaces and “downdraught” can cause
counter pressure, especially during
warmer times of the year. In this case a
flue gas fan should be installed. Consult
an installation engineer for further ad­vice.

The alarm text: * Ignition error *

The burner has received a signal to stop
because the optical sensor indicated that
it cannot see light in the combustion
chamber during the ignition sequence.

The burner makes three attempts at
ignition.

ACTION: If the burner is equipped with
hot-air ignition, contact
installation engineer for advice.

For a manual start, check the optical
sensor.

CHECK: That there are pellets in the
external store.

ACTION: Fill up with pellets.

CHECK: That the gradient of the screw is

not too sharp (max 45°), or whether the

feed has stopped due to a dip having
formed in the bottom of the external
store.

ACTION: Place the screw at a gentler
angle, and turn it backwards and for­wards a few times. The location should
be in the middle of the external store.

CHECK: That the external screw’s drive
motor functions and that the motor shaft
drives the screw spiral.

ACTION: Test the external motor sepa­rately for parameters p 11-13. Tighten
the socket head screw on the motor
shaft’s bevelled section. In the event of a
motor fault, contact an installation engi­neer.

CHECK: That the hose to the burner is
not too horizontal.

ACTION: Change the angle so the pellets
do not get stuck.

CHECK: That a dip has not formed in the
internal store.

ACTION: A dip forms in the store only
because the pellets are damp or there are
too many of them. Tap the store. Change
the pellets immediately. Damp pellets
may cause a total stop or breakdown. In
the event of overfilling, you must contact
an installation engineer. A dip may also
form when the store’s bottom angle is
too small.

TROUBLESHOOTING

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MAINTENANCE

• Be extra careful after a new delivery
or change of pellets.

• When checking the burning cup, the
burner should always be removed.

(Check that the three stop screws that
hold the burning cup are tight, see
picture on page 4.)

• Knock or scrape away any coking in
the burning cup down to the feed
screw (This should be done once a
month or when necessary.).

MAINTENANCE

• Check the optical sensor and clean as
required.

• Check release gate’s seals on the
burner’s internal store and clean as
required. In the event of any deforma­tion or diiscolouration (leak) the wings
must be changed.

• Check the hose connections between
the external feed and the burner, and
reset after servicing.

• Check both the horizontal and bevel­led air openings in the primary ring
that may have compacted (cleaned

using a hacksaw blade).

• Check that the gear ring is touching
the primary ring and can rotate easily,
and that the rotary arm does not lift
it. Check after cleaning that the pri­mary ring and secondaryair pipe are in
place.

REMEMBER TO SWITCH ON THE MAIN

CURRENT AFTER SERVICING.

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RAW MATERIALS

The pellet fuel can be manufactured
from various energy-producing raw
materials. The most common is raw
materials from wood, but there are
several alternative raw materials already
available on the market.
The raw materials have various character­istics that give them both advantages
and disadvantages as pellet fuel. Essen­tial factors are energy value, ash content,
environmental impact, and, of course,
price.

process and by separation during storage
at the loading site. The occurrence of
sintering in the ash is due to silicate
impurities and cannot be ascertained
prior to combustion. Damp pellets may
arise in connectionwith intermediate
handling and transport.

If possible, check when you purchase the
pellets that you are buying clean, dry
pellets and not chips.

FUEL ADVICE

You should choose a fuel with the lowest
cost per energy unit once you have taken
into account the fuel’s performance in
the boiler, ash content and its environ­mental impact.

The EcoTec pellet burner is designed to
be able to burn most types of pellet fuel.

PELLET QUALITY

The majority of the disruptions that can
arise due to poor fuel quality are the
result of poor production, handling and
intermediate storage before the fuel
reaches the end customer.
With high levels of fine chips, the defi­ciency is caused by the manufacturing

DAMP PELLETS MUST BE

DESTROYED IMMEDIATELY.

APPROVED FUEL SPECIFICATION

WEIGHT 600 – 750 kg/m

ENERGY CONTENT 4.7 – 5.0 kWh/kg

SIZE/DIAMETER 6 – 12 mm

SIZE/LENGTH NB max. 35 mm

MOISTURE CONTENT max. 12%

ASH CONTENT/
WEIGHT: (wooden pellets) 0.5 – 1%

FINES CONTENT/WEIGHT max. 3%
ASH MELTING TEMPERATURE min 1100°

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3

GUARANTEE TERMS

GENERAL

Sahlins EcoTec AB (“EcoTec”) is responsible for faults in the product supplied by EcoTec on the terms
specified below.

The guarantee applies on condition
– that the attached certificate of installation is completed and returned to EcoTec no later than one (1)

month after the installation has been completed.

– that the product has been installed by an EcoTec authorised retailer.

COMPLAINTS

The guarantee only applies on condition that the purchaser complains of any fault in writing without delay
no later than 2 weeks after the fault was discovered or should have been discovered. Faults not reported
within the specified guarantee period are not covered by EcoTec’s guarantee commitment.

GUARANTEE AND COMPLAINTS

GUARANTEE PERIOD

This guarantee only applies to new products and is valid, unless otherwise specified, for a period of twenty­four (24) months from the date the product is purchased from the retailer and must be confirmed with a
receipt, invoice or similar document.

SCOPE OF THE GUARANTEE

EcoTec shall, without delay, deal with manufacturing and material faults by, at its own discretion, either
repairing faults in the product or replacing the product or parts thereof. EcoTec’s repair commitment does not
include transport of the faulty or replaced product or part thereof, nor removal or assembly of such. At
EcoTec’s request, the faulty product or part thereof must be sent to EcoTec at the purchaser’s expense. In
addition, EcoTec is not responsible in any way for direct or indirect losses, and EcoTec’s liability is limited to
a sum corresponding to the invoice value of the faulty product.

LIMITATION OF LIABILITY

The guarantee does not cover:
– faults that do not affect the use of the product and that do not cause the purchaser significant inconven-

ience.

– faults caused as a result of changes made by the purchaser or interventions in the product not carried out

by a retailer authorised by EcoTec.

– faults caused by the use of spare parts or consumables not compatible with the product. Such compatibil-

ity only applies concerning consumables and spare parts recommended by EcoTec.

– faults caused by abnormal wear and tear, the purchaser’s use of the product in any way other than shown

in the user documentation or neglect by the purchaser or a third party or other circumstances beyond
EcoTec’s control, such as transport damage, voltage faults, incorrect fuel, lightning, careless treatment and
theft.

– normal operating maintenance, such as adjustment, normal wear and tear or the need to procure

expendable accessories and simpler components such as fuses, cords, etc.

– damage caused by the product not meeting a national standard or safety requirements in a country other

than the one where the product was purchased.

– costs as a result of adaptation or modification carried out by a retailer authorised by EcoTec that were

necessary to meet a national standard or safety requirements, or other costs for adaptation of the product
due to specifications being changed after the product has been supplied.

– costs caused as a result of the product being connected to a product not approved for connection by EcoTec.

OTHER

This guarantee does not affect the purchaser’s rights in accordance with the Consumer Purchases Act, nor
does it affect the purchaser’s rights in relation to the retailer as per the purchase terms. In the absence of
applicable national legislation, the purchaser’s right to a guarantee is limited to what is contained in these
guarantee terms. EcoTec cannot be held responsible for direct or indirect damage as per other guarantees or
commitments with regard to this product.

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OPERATION LOG

DATE MEASURE

OPERATION LOG

25

OPERATION LOG

DATE MEASURE

OPERATION LOG

26

OPERATION LOG

DATE MEASURE

OPERATION LOG

27

The green fire

Our company concept is simple: Proximity, satisfied customers and respect for the
environment. We work with authorised retailers who offer a full service. Our concept
of quality is based on high levels of technical competence and constant development.
We manufacture burners from 7 kW up to 300 kW. We reckon these are the best
products on the market, and promise reduced heating costs.

We don’t view pellets as the energy source of tomorrow, but of today. The Earth’s
resources are not inexhaustible, and there are limits to what the environment can
cope with. It is therefore important to focus on renewable, environment-friendly
energy sources that are also cheap.

If you have any views on our products, please ring, write or fax us.

Sahlins EcoTec AB Box 2103, SE-511 02 Skene, Sweden

Tel. [phone]. Fax [phone]

[e-mail], www.ecotec.net.

EcoTec is environmentally certified in accordance with ISO 14001

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