Ecotec A4 Installationsanleitung
1
MANUAL FOR A4 MODEL WITH MAX. OUTPUT 20 kW
Operation and
maintenance
A4 Pellet burner
1-14-3009E
2005-03
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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 calcu-
lated 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 25-
300 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.
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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
PAGE 5
PAGE 6
PAGE 8
PAGE 9
PAGE 10
PAGE 16
PAGE 18
PAGE 20
PAGE 22
PAGE 23
PAGE 24
PAGE 25
CONTENTS
4
1Burning cup
2Rotary arm
3Gear ring
4Primary ring
5Stop screws, burning cup
6Primary air pipe
7Secondary air pipe
8Hot-air ignition
9Optical sensor
10 Combustion fan
11 Release gate
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
1
2
3
3
5
5
6
6
7
8
8
9
10
11
11
12
13
13
14
15
16
17
18
19
20
21
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OVERVIEW OF THE BURNER
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1Start
2Stop
3Display
4Control buttons for display manipulation
5Input operational thermostat cable
6Input Max. thermostat cable
7Input Lambda probe (optional)
8Input/Output multi-unit cable for the
burner
9Input voltage 230/240 VAC
10 Output external feed
11 Cover, terminal block
11
10
9
678
12
3
4
5
OVERVIEW OF THE CONTROL SYSTEM
Control box 3006
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PELLET FIRING
Pellet firing with EcoTec’s pellet burners is
extremely similar to oil firing. A pellet
burner requires only slightly more main-
tenance than an oil burner. We recom-
mend 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 preprogram-
med and has default settings. The instal-
lation 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.
FUNCTIONAL DESCRIPTION
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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 ALWAYS EXERCISE CAUTION
WHEN HANDLING ASHES, AS
THEY MAY BE HOT.
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
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 con-
nected to an ordinary vacuum cleaner is
available as an optional accessory.
A sheet-metal version is also available with
built-in suction fan.
FUNCTIONAL DESCRIPTION
8
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 con-
venient 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 non-
continuous fuel feed between them
provides increased protection against the
spread of fire in the event of backburn-
ing.
Damage resulting from incorrect hand-
ling, 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 opera-
tional thermostat, the maximum thermo-
stat will step in and prevent the boiler
from overheating.
The burner is also designed to revert to
normal operating mode following opera-
tional disruptions such as a power cut,
fuel interruptions, etc. If this process
fails, this is indicated in the display and
the burner switches off.
EASY TO MANAGE
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1The main power switch must always
be on.
2Connections between burner and
external feeder system must be prop-
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:
3The release gate’s wings must not be
damaged or discoloured and it must
form a tight seal against the walls of
the feed chamber.
Alarm text Description
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.
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 detec-
tor) has been tripped.
The burner can be restarted using START once the fault has been
dealt with.
Max. thermostat
Burner NOT in place
Back heat
Min. Temp. Stop
Ignition error
No Flame
Fault Ext. Feed
External Alarm
SAFETY CHECKS / ALARM
THE FOLLOWING MUST ALWAYS BE CONSIDERED AND CHECKED
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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 discon-
nected for around 180 seconds to allow any O2sensor to heat up before it can
be used. If you want to bypass the countdown, press STOP once.
Parameter changes
in the control system
are made using the
built-in menu sys-
tem.
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 param-
eter to return without changing the value.
CONTROL SYSTEM / OPERATION
Inhaltsverzeichnis
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