HARGASSNER Classic 12 User manual

HARGASSNER Ges mbH
A 4952 Weng OÖ
Tel.: [phone]
Fax.: [phone]
[email protected]
www.hargassner.at
O p e r a t i o n m a n u a l
P e l l e t B o i l e r
C l a s s i c 1 2 - 2 2
EN - V01 04/2019 - 11059730
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Contents
Chapter I: Technical Data 4
1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Intended purpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Fuel quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Execution of the boiler room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 Design of the fuel storage room. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6 Execution of heating circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7 Flue pipe - chimney connections . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8 Electrical supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Chapter II: Safety regulations 7
1 General safety advices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Remaining risks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Measures in case of danger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter III: Operation 11
1 Overview of components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Prior to commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5 Boiler's status indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Info - menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7 Manual operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8 Settings menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9 Customer settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
10 Installer settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11 Optional remote controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Chapter IV: Cleaning, Maintenance 51
1 Maintenance contract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
2 Cleaning and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
3 Disposal information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Chapter V: Troubleshooting 58
1 Error display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
2 Retrieving the error list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
3 Acknowledging and rectifying an error . . . . . . . . . . . . . . . . . . . . 58
Chapter VI: Appendix 59
1 Copyright notice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

HARGASSNER Heating technology for Biomass A 4952 Weng OÖ Tel.: [phone] Fax: [phone] [email protected] 3
Dear customer!
You've chosen an innovative wood biomass boiler from Hargasssner. The boiler
from Hargassner Ges mbH is a state of the art product and manufactured to the
latest production standards. We are very pleased about your decision and guar-
antee that you've chosen a reliable quality product.
However, as important as the products' high performance is, a professional instal-
lation, commissioning and service is just as crucial. Supportive are attached
hydraulic schematics, and connections- and installation drawings. To ensure a
long service life, exactly read and follow this operation manual. High costs for
reparation and long downtimes may be prevented.
Keep this manual within easy reach.
The operating manual is intended to help:
• become familiar with the boiler
• and to use it for its intended purpose.
This operation manual contains important information in order to operate the
boiler
• safely
• appropriately
• efficiently
• and economically
Guidelines within this manual will:
• Prevent hazards
• Reduce breakdowns and wear
• Increase the reliability and service life of the boiler

4HARGASSNER Heating technology for Biomass A 4952 Weng OÖ Tel.: [phone] Fax: [phone] [email protected]
I Technical Data
Chapter I: Technical Data
1 Dimensions
2 Intended purpose
This automatic wood pellet boiler is designed to heat water only. Only fuels
permitted by Hargassner may be burned in this boiler. Only use the boiler if it is
in technically perfect condition. Rectify errors immediately.
The appropriate operation also covers observation of all items of this operation
manual and the carrying out of inspection- and maintenance works.
3 Fuel quality
Only use fuels that comply with EN ISO 17225-2 (replaces ÖNORM EN 14961-2).
3.1 Wood Pellets (A1)
Ensure these quality standards are adhered to when wood pellets are ordered and
delivered.
• Least possible dust content
• Wood pellets with a hard and shiny surface
• 100% natural wood, no additives, etc.
• Wood pellet class A1 defined in EN ISO 17225-2:2014 and
ÖNORM M 7136
B
H
T
Designation Description Value Unit
B Total width 1165 mm
T Total depth 775 mm
H Total height 1470 mm
Total weight 300 kg
W A R N I N G
Only use released and permitted fuels
Always consult Hargassner before using new fuels.
Have their compatibility with the boiler checked by Hargassner.
Calorific
value Density Diameter Length Fine material rate
> 4.6 kWh/kg 600 - 750 kg/m³ 6 ±1 mm 3.15 - 40 mm < 1%

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Technical Data
3.2 Inadmissible fuels
• Fuels with water content >35%
Formation of condensate
Increased corrosion in the boiler
• Paper / Cardboard
• Chip boards, impregnated timber
• Black coal, brown coal or lignite
• Waste
• Plastics
4 Execution of the boiler room
Boiler room must executed according to legislation in your country.
See "Design of the boiler room" in the installation manual
• Keep the boiler's air openings free.
• Do not store any flammable materials in the boiler room.
• Execute the boiler room in frost-proof condition.
• fireproof, plane and solid floor- and ceiling construction
• In accordance with regulations, have the main heating switch installed by an
electrician (depending on building regulations).
• Fire extinguisher
5 Design of the fuel storage room
Design your pellet fuel storage room in accordance with local regulations
(e.g. ÖNORM M 7137 or VDI 3464).
See "Design of the fuel storage room" in the installation manual
• Only install metal fill pipes, electrically grounded and connection to atmosphere.
• Pay attention to noise protection
• Protection against moisture, water and dust.
• Correctly position impact protection mat(s) and install slant floor.
6 Execution of heating circuits
The heating circuits must be designed correctly for optimum operation of the boiler.
Authorised heating diagrams: See heating diagrams enclosed.
The layout of the heating circuits' accumulators, pumps and mixers has to be
designed according to legislation by the installer.
D A N G E R
Danger of suffocation due to odorless carbon monoxide in the storage room
• Ventilate sufficiently before entering the fuel storage room
• Keep window/door open during stay
• Position second person outside to supervise
Dust explosions in the storage room due to the explosive combustion of
dust (pellet dust)
• Pay attention to proper grounding of the pellets transportation tubes
• No motors in the fuel storage room
Except agricultural buildings
• No other source of ignition (e.g. light) in the storage room
• No electrical equipment (e.g. light switch) in the storage room
• No welding works in dusty environment

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I Technical Data
7 Flue pipe - chimney connections
8 Electrical supply
See according to enclosed electrical manual
• The electrical connection may only be established by a licensed and authorised
electrician and must be done in accordance with the enclosed electrical manual.
• Attach a lockable main power switch outside of the boiler room (depending on
building regulations).
• Max. prefuse 13 A (C characteristic)
• It is absolutely imperative that the intrinsically safe cables are permanently installed
• Use suitable mechanical components
• in-phase connection L and N (see electrical manual)
• Connect potential equalisation
• Use highly flexible cables (e.g. H05VV-F)
Description Unit Classic 12 Classic 14 Classic 15 Classic 22
Nominal heating output KW 12.0 14.9 15.0 22.0
Flue gas temperature °C 150 150 150 150
CO2% 14
Mass volume kg/Sec 0.0071 0.0082 0.0088 0.0129
Necessary pressure Pa 2
Flue draft max. limit Pa 10
Diameter of flue pipe connection mm 130
Water resistance dT 10° mbar 6.2 7.2 7.7 18.3
Water resistance dT 20° mbar 2.0 2.3 2.5 3.8
Electrical energy Characteristics Unit
Voltage 230 V ± 5 %
Frequency 50 Hz ± 5 %
Fuse 13 A
Power consumption 47 W

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Safety regulations
Chapter II: Safety regulations
1 General safety advices
1.1 Obligation to instruct, external personnel, children
Work on electrical parts of the boiler may only be carried out by an electrician and
in compliance with the electro-technical rules and standards.
Work on hydraulic systems may only be carried out by personnel with specialised
knowledge and experience in heating engineering and pipework construction.
1.2 Special measures prior commissioning through the operator
• Licensing requirements for safe operation and accident prevention regulations
must be observed!
• Do execute verifications prior first start up.
See „Checks prior commissioning“ on page 12.
• Do execute verifications prior commissioning.
See „Inspections prior starting up the boiler“ on page 13.
D A N G E R
Risk of death, injuries, damage from inappropriate installation
• Observe the safety instructions of the boiler and in the operation manual!
• Read the user manual PRIOR to commissioning.
In the cladding door is a storage compartment
Incorrect actions by unauthorized individuals
• Works on the boiler through qualified and experienced personnel only.
• Decide who is responsible for managing the boiler.
• Keep external, unauthorised and untrained people away from the boiler and the fuel
storage room
• No transfer of control entry codes
• Observe legal minimum age of personnel.
• Place prohibition sign in front of boiler room door and fuel storage door.
Risk of suffocation due to odourless carbon monoxide
• Ventilate sufficiently before entering the fuel storage room
• Keep window/door open during stay
• Always have a second person outside to supervise.

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II Safety regulations
2 Remaining risks
The following residual risks must be given special consideration when the boiler
is operated properly and in accordance with its intended purpose:
D A N G E R
Burns from hot surfaces or boiler components
• Switch off the boiler and let it cool down before carrying out any maintenance or ser-
vicing work
• Do not grasp into the boiler during operation.
• Wear heat resistant gloves.
The ash in the ash box does save heat.
• Put ash in closed, not-flammable vessels only.
Do not empty hot ash into dustbin
Scalds from sprinkling, hot water
• Check hoses, lines and connections periodically for leakages, wear and tear or any
other damage!
• Rectify damages immediately.
• Before performing any maintenance work on the water circulation system, depres-
surise the boiler.
• Check, if all valves are in correct position.
D A N G E R
Dust explosion due to electro-static charging in the fuel storage room
• Pay attention to proper grounding of the pellets transportation tubes
• No motors in the fuel storage room (acc. to country-specific regulations)
Except agricultural buildings
• No other source of ignition (e.g. light) in the storage room
• No electrical equipment (e.g. light switch) in the storage room
• No welding works in dusty environment
D A N G E R
Burns from explosive combustion of residual gases (CO) in the combus-
tion chamber
• Open the maintenance door carefully.
Slightly in the beginning.
 Keep your body and face away from the maintenance door.
• Do not open the maintenance doorduring or straight after a power blackout.
The risk of deflagration increases significantly after uncontrolled conditions.
(e.g. power loss)
• Do not open the maintenance door during heating operation.

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Safety regulations
D A N G E R
Risk of injury due to moving parts
• Omit access to augers or motors at operating boiler.
• Do not perform any work on the boiler when any person is in the danger zone
Secure / lock fuel storage room
• Only clean the augers and remove blockages using suitable tools and when the
main power switch is turned off.
• Wear safety shoes
• Observe fuel storage room sticker!
D A N G E R
Electric shock from contact with live terminals
• Observe information signs.
• Before starting work, check that no voltage is present using a voltmeter
D A N G E R
Poisoning and danger of suffocation due to flue gases in the boiler room / building
• Check boiler doors and seals for leaks.
• Burning treated wood (paint, varnish, impregnation) results in toxic ash.
Avoid skin and eye contact
W A R N I N G
Risk of injury due to unexpected operating statuses
• During manual mode no monitoring of limit switches or motors is performed.
Only run the augers backwards briefly (two seconds maximum).
• Manual mode is only allowed to be executed by trained staff.

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II Safety regulations
3 Measures in case of danger
3.1 Fire in the boiler room
Switch-off main switch prior any fire-fighting operations
Disconnect main power supply
Switch-off the boiler and unplug the unit from the mains
3.2 After power loss
During the power failure, do not open the boiler's doors or reach into it.
Danger of deflagration
Danger of crushing through augers
After the electrical supply is switched on again, the control starts in Heat up mode
and monitors the flue gas temperature.
As the flue gas temperature increases, the boiler will heat up and control the
transfer of heat according to the preset parameters.
3.3 Leak in heating water system (no water)
If the water pressure is too low, not enough heat is being transferred from the
boiler to the heat circuits, HWT and accumulator.
Danger of boiler overheating
Turn off the boiler.
Fix leakiness
fill / refill water system
Check water pressure
3.4 Leak in the boiler (smoke escaping)
Turn off the boiler.
Check the seals of the doors and cleaning covers, and have them replaced.
3.5 Auger blockage(s)
Do not touch the augers.
Danger of crushing at sudden release of blockages
Briefly run the blocked augur backwards in manual mode (two seconds
max.).
Danger of squeezing of fuel in the auger
Only clean the augers and remove blockages using suitable tools and when
the main power switch is turned off and locked

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Operation
Chapter III: Operation
1 Overview of components
The boiler consists of the combustion chamber and the heat exchanger, and
controls the combustion air with the exhaust fan.
The lambda sensor consistently monitors the flue gases. The integrated sensors
monitor the temperatures of the boiler and the flue gas. The turbulators clean the
heat exchanger through a rod. The boiler cleans itself at regular intervals using
the de-ash system. The ash extraction auger transports the fly ash and the grate
ash into the ash box. The ignition of the pellets takes place through the automatic
Ignition.
1.1 Function
• Fuel transport from the storage room
• Transport of the fuel into the combustion chamber
• Ignition and combustion of the fuel
• Control of energy transfer to the water based system
• Cleaning of the boiler and the ash extraction into the box
• Evacuation of the flue gases
Pos. Description
1Fully refractory-lined combustion chamber
2Sliding grate
3Motor for sliding grate
4Secondary air stream with inlet openings
5High-temperature insulation plates
6Primary air
7Ash box
8Ignition
9Stoker auger
10 Circulation zone
11 Heat exchanger
12 Turbulators
13 Automatic heat exchanger cleaning
14 Exhaust fan
15 Full insulation
16 Wood pellet vacuum turbine
17 Pellet-tubes
18 Fuel indicator
19 Pellet day hopper
20 Double rotary valve
21 Drive unit
22 Lambda sensor
1
23
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 19
20
21

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III
2 Prior to commissioning
2.1 Checks prior commissioning
• Safety on-site and plumbing and electrical installations
• Installation of the boiler
• Check all necessary components
• Check they are secure, that each component is functioning correctly, that
the motors are rotating in the right direction, etc.
• Check the combustion chamber lining is positioned correctly.
2.2 Start of commissioning
Once the boiler has been installed properly and all the required safety devices
have been checked, the boiler can be commissioned in accordance with the
commissioning checklist in the commissioning book.
D A N G E R
Death, injuries or damage due to missing, defective or bypassed safety
devices or boiler parts
• Check safety devices and boiler parts carefully for proper and intended function
• Safety devices should not be modified or bypassed
• In case of a malfunction or defect, perform repair measures immediately.
• Place, position and function of all safety devices must be known
W A R N I N G
Danger of crushing from moving parts in the vicinity of the fuel
extraction system, ash extraction system and combustion grate
• Make sure that no persons stay in any danger zone
• Do not reach into any reachable mechanical parts.
• Do not stand on the boiler system.
• Make sure that no foreign parts (tools, etc.) remain within any boiler component
D A N G E R
Commissioning by untrained or unauthorised personnel Risks due to
unforeseeable operating conditions
• The switch-on / first start-up must be carried out by Hargassner Ges mbH or
specially trained staff.
A T T E N T I O N
The boiler must be commissioned by an engineer with a Hargassner commissioning
certificate. The completed commissioning checklist must be sent back to Hargassner
with the commissioning number within 30 days of the commissioning, otherwise the
warranty becomes void. A copy remains in the commissioning book on-site.

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2.3 Customer instructions
• Explain cleaning and maintenance intervals
• Explain inspections prior to any fuel refill
• Explain how to operate the boiler and resolve issues.
2.4 Restart boiler
Once the commissioning process has been completed, the boiler can be started
for the first time. Please proceed as follows:
Switch the boiler to manual operation
Use parameter no. 8 to fill the day hopper in manual mode.
Prevents an error due to missing fuel
Switch the boiler to Auto or HWT mode.
Boiler starts automatically when hot water is needed
2.5 Air flow slider settings
The air flow slider above the ash box is set at the factory.
Classic 12 - 15: one hole line open
Classic 22: all holes lines open
2.6 Inspections prior starting up the boiler
Check the water pressure in the boiler, heat, HWT and accumulator circuits.
Pay attention to the display for notifications (error messages and boiler sta-
tus).
Rectify any errors.
Check and lock fuel storage room
2.7 Filling the fuel storage room
W A R N I N G
Fire hazard
Danger of flue gas being suctioned out of the boiler
 Make sure you switch off the boiler before blowing pellets into the storage room!
Protect fuel against moisture

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III
3 Control panel
3.1 Home screen
After the time set in the "No. 02 Display settings" setup parameter has
elapsed, the controller automatically switches to the home screen.
D A N G E R
Wrong operation of the control
Risk of injury, damage to the boiler from unpredictable operating modes
• Only trained staff should operate the control unit
• Access to all functions of the control is protected by codes in the control unit
Service settings and installer settings
Codes may not be forwarded to unauthorised staff
+
2
1
3
4
Off Summer Winter
Home
Pos. Description Function
1Standard menu Changes from Home to standard menu
See „Standard menu view“ on page 16.
2Operating mode Off Quick select button for operating mode Off
See „Operating modes“ on page 17.
3Operating mode Summer Abbrev. button for operating mode Summer (HWT mode)
4Operating mode Winter Abbrev. button for operating mode Winter (Automatic mode)

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3.2 Touch screen
The control panel is designed as a touch screen.
Handling through finger pressure on the display.
Scroll through the menu with
To return to the previous menu, press Standard
To return to the standard menu, press Standard (you may have to press
twice)
Possible from every menu
Activate the operating mode by pressing the Function selection
button
Press the field to activate the input field
Values are displayed in red
Change the active values:
Values flash red
Buttons flash green
To enter or save any changes, press
You can go straight to the customer parameters by pressing the relevant
graphic in the standard menu.
Possible with the boiler, accumulator, HWT, external boiler and heat circuit
graphics
Function
Off

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3.3 Standard menu view
HARGASSNER
71°C
73°C
30°C
56°C
72 °C
160 °C
ACC.
59%
HWT A
Info
Overview
Customer
HC A:
ON
HC1:
ON
BOILER: Combustion
W,21.11.18 07:22 STANDARD
Settings Standard Sweep
Auto
Function
Diff
4
OUTSIDE Temp.: 5°C
3
1
2
5
9
18
8
13
16
14
6
17
7
12 10 12 15 11
Pos. Description Function
1Boiler temperature Display of the current boiler temperature
2Boiler-flue gas temperature Display of the current flue gas temperature
3Status display of the boiler See „Boiler's status indicators“ on page 18.
4Status display of the control unit
Display of the current menu name
• Description of the active menu
• Error (flashes red) / warnings (yellow)
• Current position in menu tree
•Boiler Stop in days
5
Temperature display in accumulator
(if available)
Display accumulator filling volume in [%]
Current temperatures (top, mid, bottom) of accumulator sensors
Currently filled heat capacity
6HWT temperature indicator Display of the current water temperature in the HWT
7Status display of heating circuits
• Heat circuits switched off
• Sun - Heat circuits in day mode
• Moon - Heat circuits in reduced mode
• Frost - Heat circuits in frost protection mode
8Display of outside temperature Outside temperature measured at outside sensor
9Settings Takes you to the customer, installer and service settings and to the
controller's setup menu.
10 Standard
Displays the standard menu. You can switch directly to the Standard
menu from any menu.
After 10 minutes of no activity, the display automatically switches
back to the Standard display menu.
11 Function Choose operation mode of the boiler.
See „Operating modes“ on page 17.
12 Pump Operation mode of the pump
Green: pump is running; white: pump has stopped
13 Info • Switching to the Info menu
14 Customer • Switching to the customer settings
15 Chimney sweep By pressing the Sweep button, a special Boiler status programme is
started to measure the flue gas consistency
16 External heat boiler Status display of external boiler (if available)
Green: released; white: locked
17 Differential control Pressing the symbol will take you to the differential control info page.
18 Hargassner logo Press on the logo to display the boiler data
Off

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4 Operating modes
•Automatic (Auto): The standard mode in which the heating system is operat-
ed according to the pre-set temperature and on/off times.
•Hot water (HWT): The heating system is only used to ensure the hot water
supply, not to heat any floor heating system or radiators.
No control of the heat circuits (except for the frost protection function)
Pumps Off and mixers Closed
•Switch off (Off): The heating system is switched off - with the exception of the
frost protection function. The control unit still shows all necessary information.
No control of the heat circuits (except for the frost protection function)
Pumps Off and mixers Closed
•Manual operation (Manual): Allows various actions to be carried out manu-
ally, such as manual activation of individual pumps and mixers. Also shows
additional information and values.
The standard display is retained in the Automatic, HWT and OFF operating
modes.
•Sweep button: The button for the chimney sweep to manually switch the
boiler On or Off during emission tests.
The following options are available:
Full load: If an accumulator is connected, press this button to have the
control unit automatically change to full load measurement.
Empty accumulator: Press this button to switch off all programmed con-
trol functions of the boiler. The boiler operates at full load, assumes very
low outside temperatures and tries to transport as much as possible heat
into the heating system. All regulating devices like thermostatic head
valves and automatic control valves have to be opened manually to ensure
that the required amount of heat is transferred. This function ends auto-
matically after 2 hours. If the chimney sweep button is pressed and no
accumulator is connected, the control offers two options: full load
measurement or part load measurement. All programmed control
functions of the boiler are switched off in part load measurement. The
boiler controls up to 100% (full load) combustion. After 15 min. full load -
the heat output is reduced to 50% (part load). After 5 min. part load, the
"Chimney sweep Start measuring" message is displayed.
•Heater OFF: Button for switching heater off. Heater can be switched off
immediately or at a preset time.
Control of the heating circuits with pumps and mixer continues; only firing
is switched off.
Auto
Function
HWT
Function
Off
Function
Manual
Function
Sweep
Heater
OFF

18 HARGASSNER Heating technology for Biomass A 4952 Weng OÖ Tel.: [phone] Fax: [phone] [email protected]
III
5 Boiler's status indicators
The boiler control uses the temperatures and flue gas values to detect the status
of the boiler.
Off
The boiler switches off if there is no demand from the heat circuits or HWTs or if
the accumulator takes care of the demand.
Ignition monitoring
Fuel is being transported into the combustion chamber and the boiler monitors if
an autonomous ignition is possible due to residual embers.
Ignition
The electric ignition starts and the fuel is ignited.
Combustion
The boiler controls the induced draft fan's output (air volume) according to the
heat demand and required boiler temperature, and the optimum fuel amount
according to the lambda sensor signal.
Combustion output range from 30 - 100 %
Burnout
The boiler controls the burnout according to the O2 content and the set minimum
and maximum burnout times.
BOILER:
Off
BOILER: Ignition
monitoring
BOILER:
Ignition
BOILER:
Combustion

III
HARGASSNER Heating technology for Biomass A 4952 Weng OÖ Tel.: [phone] Fax: [phone] [email protected] 19
Slumber mode
If the heat demand drops below the minimum boiler output, the status changes to
slumber mode.
Deashing in x min
if the maximum combustion time is exceeded, no more fuel is added and the
boiler burns out.
Deashing
The grate is opened and closed twice. The generated ash drops down into the
ash box. The boiler returns to the required status afterwards.
Pellets fill in
If the minimum auger run time and the set suction time are reached, or the
maximum auger run time is exceeded, the filling will be started after the displayed
time.
BOILER:
Slumber mode
BOILER:
Deashing in x min
BOILER:
Deashing
BOILER:
Pell. fill in 7 min

20 HARGASSNER Heating technology for Biomass A 4952 Weng OÖ Tel.: [phone] Fax: [phone] [email protected]
III
Refill pellets
The vacuum turbine is started up and the day hopper is filled with wood pellets
again. The boiler subsequently returns to the required status.
BOILER:
Refill pellets