SOLARFOCUS maximus L 150 User manual

Operation manual for the system operator
Read carefully before operating.
DR-0159-EN / v16-202206
Commercial boiler maximus L

1 About this manual 3
2 Safety information 3
3 Warranty, guarantee, liability 4
3.1 Technical requirements for warranty and
guarantee claims 4
3.2 Conditions for claims 4
3.3 Claims rendered void 5
3.4 Limitation of liability 5
4 Product information 5
4.1 Proper use 5
4.2 Fuel 5
4.3 Product description 5
4.4 Spare parts 6
4.5 Accessories 6
4.6 Type plate 6
4.7 CE declaration of conformity 6
4.8 Safety devices 6
4.9 Efficient and low-emission operation 9
4.10 Functional components, combustion prin-
ciple 10
4.11 Technical specifications 12
4.12 Wood chipclassification 14
4.13 Dimensions 16
5 Use and operation 18
5.1 Main screen of boiler control 18
5.2 Boiler operating mode 18
5.3 Selection menu 18
5.3.1 Heating circuit output test 19
5.4 Customer menu 19
5.4.1 Required boiler values 19
5.4.2 Automatic diverter for suction heads 20
5.4.3 Heat exchanger cleaning 20
5.4.4 User lock 21
5.4.5 Message log 21
5.4.6 Operating hours counter 21
5.4.7 Qualified personnel menu 22
6 Heating circuit 24
6.1 Heating circuit settings 25
6.1.1 Heating circuit operating mode 25
6.1.2 General settings 25
6.1.3 Heating curve 26
7 DHW heating 28
7.1 Domestic hot water tank 28
7.1.1 DHW tank settings 28
7.2 Fresh water module - FWM (optional) 29
8 Recirculation control 30
8.1 Circulation settings 30
8.2 Recirculation control - Options 30
9 Buffer tank 31
10 Solar system 32
11 Temperature difference charge control 32
12 mySOLARFOCUS app 33
12.1 Requirements for use 33
12.2 Connecting the control to the internet 33
12.3 Registering on the web server 33
12.4 Installing app, registering user 34
12.5 Add system 34
12.6 Use of the mySOLARFOCUS app 35
12.7 Approve additional users 35
13 Remote access to the control 35
13.1 External access: SOLARFOCUS-connect 35
13.2 Access from the home network 36
14 Weatherman function 36
14.1 Information 37
14.2 Heating circuit 37
14.3 Domestic hot water 38
14.4 Buffer tank charging 38
15 Maintenance (and cleaning) 38
15.1 Required activities - overview 39
15.1.1 Empty ash container 39
15.1.2 Check system pressure 40
15.1.3 Cleaning flue gas pipe 40
15.1.4 Check safety valve 40
15.1.5 Replace pellet suction turbine 40
15.1.6 Maintenance by qualified personnel 40
16 Perform emissions measurement 41
16.1 Emission measurement for external boi-
lers 41
17 Filling pellet storage area 41
18 Messages 42
19 Electrical fusing 43
2 Operation manual maximus L
Content

1 About this manual
1 About this manual
Dear Customer,
To ensure reliable and efficient operation of your boi-
ler, the following points are extremely important:
–Professional planning and installation of the hea-
ting system.
–Training of system operator in starting up the boi-
ler.
–Regular maintenance by the operator.
–Regular maintenance by qualified personnel.
–Compliance with the specifications and infor-
mation in this manual.
Language
The language of the original manual is German. Ver-
sions of this manual in all other languages are trans-
lations of the original.
Storage
Keep the manual for the entire service life of the pro-
duct and ready to hand. The manual must be passed
on to the new owner when the product is dis-
mantled/reused. If the manual is lost or destroyed,
request a new copy from the manufacturer.
Tips and warnings
The instructions used in this manual are highlighted
with symbols and signal words. The signal word indi-
cates the level and nature of the danger.
iIndicates information for correct handling of
the product.
!CAUTION - Material damage is possible if
these instructions are not complied with.
DANGER - Failure to comply with this instruc-
tion poses a danger to people.
Manufacturer
SOLARFOCUS GmbH
Werkstrasse 1, A-4451 St.Ulrich
Company register no. 281755x
Tel.: [phone], Fax: [phone]
[email protected]
www.solarfocus.com
Service Hotline
–Email: [email protected]
2 Safety information
Qualification of personnel
–The work procedures described in this manual
must be carried out by qualified specialist per-
sonnel.
–Work on electrical components must only be per-
formed by trained electricians and in accordance
with the relevant rules and directives.
Installation and commissioning
–System may only be installed and brought into
operation by certified qualified personnel
(SOLARFOCUS service technician or
SOLARFOCUS service partner.
Keep unauthorized persons and children away
–Danger of burns due to hot lines and hot com-
ponents, risk of injury from mechanically moving
parts. Keep unauthorised persons away, do not
leave children unattended, and control access to
the boiler room and fuel storage room.
Safety devices
–Never disengage the safety equipment > 6 of the
heating system. In case of failure, arrange for
immediate repair.
Maintenance and repair
–Perform maintenance activities at the specified
intervals. No or incorrect maintenance leads to
inefficient operation, higher failure risk of the boi-
ler and increased potential for hazards.
Recommendation: Conclude maintenance con-
tract
–Have repairs carried out by qualified personnel
only. Improper repairs can lead to risks for the
user and impaired operation.
–Store hot ashes only in metal containers. Never
put hot or warm ash in the dustbin. High risk of
fire.
–For repairs use only original spare parts or parts
approved by the manufacturer (e.g. standard
parts).
Damage to the system
–If the electrical insulation on cables, plugs, swit-
ches becomes damaged, switch off the power
supply and have the insulation repaired.
–In the event of visible damage (e.g. thermal defor-
mation, mechanical damage), operation of the
system must not be continued. The system may
only be operated if it is in perfect technical con-
dition.
Operation manual maximus L 3

3 Warranty, guarantee, liability
3 Warranty, guarantee, liability
–Guarantee claims can be made in accordance
with a boiler maintenance agreement.
–Warranty claims can be made by the customer
and the dealer has a legal responsibility to honour
them.
3.1 Technical requirements for warranty
and guarantee claims
The following technical requirements must be obser-
ved as a precondition for a warranty and guarantee
claim.
Further information on the individual points can be
found in the boiler's installation manual.
Regular maintenance and cleaning
–The boiler and the heating system components
must be maintained and checked regularly.
–This is the prerequisite for the following:
–Long-term reliability of the boiler function
–Energy-saving and environmentally friendly
operation of the boiler
–Long service life of the boiler.
–Option/recommendation: Conclude maintenance
contract.
–Documentation is crucial: When maintenance is
performed by qualified personnel, the activities
carried out/measures taken are documented in
the maintenance log. It is advisable to keep a sys-
tem book, especially when foregoing main-
tenance by qualified personnel (for
documenting/as proof of one's own activities).
Fuel
–The fuel used must meet the specifications.
–Non-approved fuel may lead to inefficient
combustion and cause damage to the boiler.
–Operation with coal, coke, waste is not permitted.
Specifications for the heating system's fill-up/-
make-up water
–Check pH value: this must be in the range of
8.2 to 9.5
–Avoiding scale build-up (=limescale on heat
exchanger surfaces):
–Take the water hardness into account
–Soften the fill-up water, or better: desalinate it.
–Avoiding water-side corrosion (is triggered by the
oxygen in the water):
–Correct system planning, correct dimen-
sioning, take material combinations into
account.
–Repair leaks immediately.
–Expansion tank (prevents air suction when the
system cools down): Correctly set the pres-
sure, check it regularly.
–Existing underfloor heating: Take care with
old, diffusion-open plastic pipes (separate the
system).
Return temperature in the boiler
–A temperature below the dew point (leads to
corrosion in the boiler) must be prevented by a
sufficiently high return temperature in the boiler.
–The use of a return booster module is a
prerequisite for guaranty claims.
Supply air to the heating boiler
–The supply air in the boiler must not contain any
aggressive substances. These substances can
cause corrosion in the boiler and chimney.
–Aggressive substances are, for example, chlorine
or fluorine compounds (used in cleaning agents,
solvents, adhesives, etc.).
3.2 Conditions for claims
For warranty and guarantee claims observe the fol-
lowing points:
–The warranty begins at the time at the time of han-
dover (delivery note, commissioning log).
–The warranty period is calculated from the date of
initial commissioning (according to the control's
operating hour counter).
–The warranty periods are based on the relevant
regulations.
–We must be notified promptly and accurately of
any damage incurred, so that the cause can be
clarified.
–If the system has defects despite correct instal-
lation (in compliance with the technical docu-
mentation), we grant a warranty provided that the
system has been examined by the plant customer
service (commissioning log).
–The guarantee applies to technical, construction-
related faults and faults in the manufacture of the
system that prevent correct and problem-free
usage.
–We are not liable for parts that were not produced
by SOLARFOCUS. However, we are prepared to
transfer our existing claims against the producer
(relating to this defect) to the buyer.
4 Operation manual maximus L

4 Product information
–In fulfilling the warranty/guarantee services, we
shall cover only the assembly time and the mate-
rials used, but not any travel or accommodation
costs necessary for the fitters/engineers or any
return transport costs.
–SOLARFOCUS GmbH assumes no liability for
any consequential costs of damages.
–The repair and/or warranty replacement shall be
carried out on site or in the SOLARFOCUS fac-
tory at our discretion.
–The company SOLARFOCUSwill determine whe-
ther such work requires a repair or whether the
parts are to be replaced free of charge.
3.3 Claims rendered void
The warranty and guarantee claims are rendered
void if one of the following points applies:
–Non-compliance with the technical requirements
> 4
–Damage during transport.
–Wilful damage.
–Damage due to force majeure (water, fire, etc.).
–Non-observance of information in the planning,
installation and operation manual.
–Insufficient energy or water, fault in the hydrau-
lics.
–Incorrect operation, failure to perform main-
tenance and cleaning as prescribed.
–Commissioning and maintenance carried out by
non-certified companies.
–Undocumented commissioning (no com-
missioning log) and/or maintenance (main-
tenance log).
–It is almost impossible to produce flawless pain-
ted parts; for this reason, slight defects that do not
adversely affect proper use shall not be deemed
as grounds for complaint.
–No claims can be accepted under the warranty if
unauthorised intervention (or action that has not
been explicitly approved by us the manufacturer)
has been carried out. In addition, the goods must
be paid for within the specified payment time-
frame.
3.4 Limitation of liability
SOLARFOCUS GmbH assumes no liability for injury
or material damage resulting from:
–Failure to observe the instructions in this manual.
–Use of the product for any purpose other than for
its intended use.
–Employment of unqualified personnel.
–Use of non-approved spare parts.
–Technical modification of the product by the sys-
tem operator.
4 Product information
4.1 Proper use
–The heating boiler maxi mus L is intended for hea-
ting up water in closed heating systems.
–Only use fuel as specified in the next chapter
Fuel.
–The maximum running time per year is 3000 full-
load hours.
4.2 Fuel
Pellets
Use wood pellets only in accordance with these spe-
cifications:
–Pellets according to the ISO 17225-2 standard,
class A1.
–Pellets that meet the additional ENplus certifica-
tion.
–Pellets that meet the additional DINplus certifica-
tion.
Wood chips
Use wood chips only in accordance with these spe-
cifications:
–Wood chips according to the EN ISO 17225-
4:2014 standard
–Permissible classes A1, A2, B1
Not permissible: Class B2
–Sizes P16S and P31S
–Moisture content maximum 35%(M35)
Detailed information on the classification of wood
chips > 14
4.3 Product description
–maxi mus L is a boiler for firing wood pellets and
wood chips.
–The boiler has an automatic fuel ignition system,
automatic fuel supply and automatic cleaning of
the heat exchanger.
–The ash produced is collected in an ash con-
tainer, which must be emptied at regular intervals.
Operation manual maximus L 5

3 Warranty, guarantee, liability
Abb. 2-1
4.4 Spare parts
For repairs use only original spare parts or parts
approved by the manufacturer (e.g. standard parts).
The manufacturer cannot accept any liability for
damage caused by spare parts not authorised by the
manufacturer.
4.5 Accessories
4.6 Type plate
4.7 CE declaration of conformity
The conformity of the product is declared by the
manufacturer in accordance with the Machinery Direc-
tive 2006/42/EC; the documents are available for
inspection at the manufacturer.
The product corresponds to Directive 2011/65/EU
(RoHS 2) and does not use any materials containing
asbestos. The product does not contain any PCB or
mercury.
4.8 Safety devices
Heat dissipation
–This function of the boiler control is a safety
device that prevents overheating of the boiler.
–Functioning: If the boiler temperature exceeds the
Heat dissipation maximum boiler temperature[1]
parameter, all pumps relating to the connected
devices (e.g. heating circuit, DHW tank, buffer
tank) will be switched on and the heating circuit
mixing valve opened. In this way, energy is drai-
ned from the boiler and it may be possible to pre-
vent other safety devices tripping.
–If the boiler temperature falls below the set Heat
dissipation maximum boiler temperature minus
1°C again, the pumps and mixing valves will be
operated in standard mode again.
[1] You can find the parameter in Service menu |System para-
meters button | General settings button. The Service menu
can only be accessed by qualified personnel (code input
required).
Overtemperature reset (OTR)
–The overtemperature reset is a safety device that
prevents overheating of the boiler.
–Functioning: The overtemperature reset stops the
heating process at a boiler temperature ~95°C
(exclusively electrical function; fuel and air supply
are interrupted).
6 Operation manual maximus L

3 Warranty, guarantee, liability
–After tripping, the overtemperature reset must be
manually released again by unscrewing the black
sealing cap 1and pressing the button as soon as
the boiler temperature falls below 60°C.
–If the overtemperature reset trips, this is indicated
on the boiler control display.
Abb. 2-2:Position of the overtemperature reset
Thermal overload protection
–The thermal overload protection prevents an
uncontrolled increase in temperature and pres-
sure of the boiler.
–Functioning: At a boiler water temperature >
95°C, the valve opens and directs cold water
through the two series-connected safety heat
exchangers. This lowers the temperature of the
boiler and avoids the need for further safety pre-
cautions or equipment damage.
Safety valve (to protect against excess pres-
sure in the system)
–The safety valve 1is a safety device for protecting
against overpressure in the water circuit of the
heating system.
–Functioning: The valve opens when the system
pressure exceeds 3 bar. Water/steam are dischar-
ged into an open drain via a blow-off line, which
avoids subsequent damage to the heating sys-
tem. The safety valve is closed during normal ope-
ration.
–For normative specification see EN 12828.
Abb. 2-3: Safety valve integrated into boiler safety group
Emergency OFF switch
–The emergency OFF switch is a manually ope-
rated safety device. The burner and the fuel sup-
ply to the boiler are stopped. Circulation pumps
remain in operation to dissipate heat and cool the
boiler.
–The switch must be installed outside the boiler
room in a safe place that is easy to access.
Operation manual maximus L 7

3 Warranty, guarantee, liability
Temperature monitor in the fuel storage
room (TM)
–Required according to guideline TRVB 118 H for
wood chips, depending on system design, hea-
ting capacity and fuel storage quantity.
–Functioning: On the channel of the fuel delivery
auger, a temperature sensor of a protected
design must be installed in the area of the wall
penetration (inside the storage room). When a
temperature of about 70°C is exceeded, the
warning device is (optically or acousti-
cally)triggered.
–Art. No.: 6565 and 6567
Automatically triggered extinguishing
device (ATED)
–This extinguishing device serves to automatically
suppress burn-back within the feeder. Due to the
proper nature and location of the fire detection ele-
ment, burn-back must be reliably detected and
the extinguishing device must be triggered auto-
matically (this must be ensured even in the event
of a power failure).
–Functioning: If at the temperature sensor 1the
temperature exceeds 50°C (direct extraction) or
95°C (downpipe extraction), the valve opens and
floods the feeder channel with water through the
connecting pipe 2.
Abb. 2-4
1 Immersion sleeve for temperature sensor (IG)
2 Connection for water discharge (AG)
iIf this device is not used, both connections
must be sealed shut. False air will otherwise
be drawn into the burner, which will impair bur-
ner performance.
–The extinguishing device must be connected eit-
her directly to a pressurised water supply or to a
water reservoir (Note: Domestic waterworks may
also be affected in case of power failure).
–The water supply amount must be equal to three
times the volume of the feeder equipment, but at
least 20 litres.
–The container must be equipped with a fill level
monitor, including connection to the warning
device (temperature monitor > 8).
–The inlet opening in the feeder is to be configured
in such a way that blockage through delivery
operation is not possible and this can easily be
checked at any time.
–The routing of the extinguishing system must be
made as a non-combustible version.
–Art. No.: 63260 and 6553
–Specification regarding requirement yes/no see
TRVB 118 H
Manually triggered extinguishing device
(MTED)
–This extinguishing device is used to combat a fire
source in the fuel storage room, or fuel storage in
the area of the extraction/delivery line. The trig-
gering must be done manually.
–This device consists of an empty pipe with a mini-
mum nominal size of DN 20 and is to be installed
in the fuel storage as specified by the manu-
facturer of the firing system directly above the deli-
very line in front of the wall or ceiling passage in
such a way that the greatest possible success
can be achieved in extinguishing. The empty
piping must be connected directly to a pres-
surized water supply and provided with a shut-off
valve arranged in the boiler room. Mark this valve
with a sign "Extinguisher - Fuel Storage Room".
–The execution of the extinguishing system must
be done so that damage during fuel feed or from
the extraction device is not possible. In addition,
make sure that the fuel supply to the delivery line
is not affected.
–Specification regarding requirement yes/no see
TRVB 118 H.
8 Operation manual maximus L

3 Warranty, guarantee, liability
Rotary valve
The rotary valve fulfils all normative requirements for
the approved fuels regarding fire protection, burn-
back safety, backflow of gases:
Abb. 2-5:Rotary valve
–Complies with requirements regarding burn-back
protection devices (BPD) according to TRVB 118
H.
–Prevents backflow of flammable products of com-
bustion into the fuel supply (according to EN 303-
5).
–Prevents fire spreading into the fuel supply (accor-
ding to EN 303-5).
Safety switch on the trough cover
Opening the channel cover interrupts the power sup-
ply to the auger motor.
4.9 Efficient and low-emission operation
Please note the following recommendations from the
EU Energy Efficiency Directive:
Use of a buffer tank
Since maximum combustion is possible only in stan-
dard operation of the boiler, and greater losses and
higher emissions occur during the warm-up and burn-
out phases, use of a buffer tank is recommended.
This tank stores the water heated by the boiler, allo-
wing the connected devices (heating circuit, DHW
tank, fresh water module, etc.) to access it as requi-
red. This ensures sufficiently long, uninterrupted com-
bustion periods for the boiler.
Use of high-efficiency heating pumps
When using external heating pumps (e.g. return tem-
perature rise, heating circuit pumps, etc.), high-effi-
ciency pumps with energy efficiency class A should
preferably be used.
This delivers savings potential of up to 80 % in drive
energy (compared to conventional heating pumps)
with identical feed results.
Operation manual maximus L 9

4.10 Functional components, combustion principle
Burner
Abb. 2-6: Section through the burner
Functional components
1 Rotary valve 5 Ash auger burner 9 Rotary drive for secondary air
2 Feeder unit 6 Ash container 10 Secondary air outlet
3 Push grate 7 Rotary drive for primary air 11 Flue gas recirculation line
4 Ash scraper 8 Primary air outlet
Fuel path
–The fuel falls through the rotary valve 1into the channel of the feeder unit 2. The auger delivers the fuel to the
feed grate 3.
–During combustion, the fuel is transported on the feed grate, and the resulting ash falls down through the
grate.
–The ash pusher 4push the ashes to the ash auger 5, and auger takes over the transport into the ash container
6.
Airflow
–Primary air is sucked in at the opening 7, forwarded in a space on the left and right side of the boiler; at the
holes 8the primary air openings under the stainless steel combustion grate, and makes it through the feed
grate into the combustion chamber.
–Secondary air is sucked in at the opening 9and passes through openings 10 in the fire brick (left, right, rear)
above the stainless steel combustion grate into the combustion chamber.
3 Warranty, guarantee, liability
10 Operation manual maximus L

3 Warranty, guarantee, liability
Operation manual maximus L 11
–Flue gas recirculation: Flue gas is introduced via the path of the flue gas recirculation line 11 here and added to
the primary air. This leads to cooling of the feed grate and the combustion chamber and thus to lower stress on
the components.
Heat exchanger
Abb. 2-7: Cross section of heat exchanger
Functional components
1 Flue gas pipe connecting flange 4 Flue gas pipe 7 Ash auger heat exchanger
2 Heat exchanger 5 Ash auger burner 8 Main switch
3 Electrostatic dust collector 6 Ash container
Flue gas guide
–The flue gas 1from the combustion chamber flows past the heat exchanger 2, on the electrostatic dust sepa-
rator 3into the flue gas pipe 4and into the chimney.
De-ashing
–The ashes falling on the feed grate (in the burner) are transported from the transverse ash auger burner 5into
the ash container 6.
–The ashes falling on electrostatic dust collector 3are transported forward by the ash auger heat exchanger 7
into the collective ash container.

4.11 Technical specifications
maxi mus L150 200 250 300
Wood chips output [kW] 149 201 240 -
Pellets output [kW] 149 201 250 299
Boiler class (acc. to EN305:5 2012) 5 5 5 5
Dimensions
Width [cm] 195 195 195 195
Height inc. adjustable feet [1] [cm] 214 214 214 214
Depth with ID fan [cm] 222 222 222 222
Burner transport dimension - width [cm] 90 90 90 90
Heat exchanger transport dimension -
width [2] [cm] 100 100 100 100
Heat exchanger transport dimension -
height [cm] 210 210 210 210
Minimum room height [3] [cm] 275 275 275 275
Weight
Burner weight [kg] 1321 1321 1321 1321
Heat exchanger weight [kg] 1456 1456 1456 1456
Feeder unit weight (inc. single axis rotary
valve) [kg] 215 215 215 215
Total weight (inc. ash container and feeder unit;
ready for operation, without fill-up water) [kg] 3290 3290 3290 3290
Water side
Water content (burner and heat exchanger) [l] 565 565 565 565
Operating temperature [°C] 70 - 90 70 - 90 70 - 90 70 - 90
Maximum permissible temperature [°C] 90 90 90 90
Max. permissible operating pressure [bar] 3 3 3 3
Min. return temperature [°C] 60 60 60 60
Boiler flow/boiler return connection [“] G 2“ET G 2“ET G 2“ET G 2“ET
Drain connection [“] G 1“ET G 1“ET G 1“ET G 1“ET
Connection for thermal overload pro-
tection [“] G 1/2“ET G 1/2“ET G 1/2“ET G 1/2“ET
Electrical connection
Connection, fuse 400 V AC, 50 Hz, 16 A, 3P+N+PE
Fuel
Fuel - wood chips
Wood chips in accordance with EN ISO 17225-4, classes A1,
A2, B1, sizes P16S and P31S; water content max. 35% (M35) >
5
Fuel - wood pellets Wood pellets according to ENISO17225-2 > 5
Flue gas side
Flue gas pipe diameter [cm] 25 25 25 25
Height up to flue gas pipe upper edge [1] [cm] 214 214 214 214
Minimum draught requirement [4] [Pa] 5 5 5 5
Maximum flue gas temperature [5] full
load [°C] 140 140 140 140
3 Warranty, guarantee, liability
12 Operation manual maximus L

3 Warranty, guarantee, liability
Operation manual maximus L 13
maxi mus L150 200 250 300
Emissions according to test
report:Wood chips
Flue gas values (in relation to 13% O2)
from test report:testing institute/test
report No.
18-IN-AT-UW-OÖ-
EX-205/3
TÜV Austria
Interpolation accor-
ding to EN303-5
18-IN-AT-UW-OÖ-
EX-205/4
TÜV Austria
-
CO full load [mg/m³] 19 30 38 -
CO partial load [mg/m³] 20 20 20 -
NOXfull load [mg/m³] 120 120 115 -
NOXpartial load [mg/m³] 93 93 93 -
Org. C full load [mg/m³] 2 2 2 -
Org. C partial load [mg/m³] 2 2 2 -
Dust content full load [mg/m³] 9.5 11.6 6 -
Dust content partial load [mg/m³] 6 6.5 6 -
Flue gas mass flow full load [g/s] 97.9 130.5 156.7 -
Flue gas mass flow partial load [g/s] 29.4 39.2 47.0 -
Emissions according to test
report:Pellets
Flue gas values (in relation to 13% O2)
from test report:testing institute/test
report No.
18-IN-AT-UW-OÖ-
EX-205/1
TÜV Austria
Interpolation accor-
ding to EN303-5
Interpolation accor-
ding to EN303-5
18-IN-AT-UW-OÖ-
EX-205/2
TÜV Austria
CO full load [mg/m³] <3 3 3.6 3.6
CO partial load [mg/m³] 29 29 29 29
NOXfull load [mg/m³] 112 112 113 113
NOXpartial load [mg/m³] 83 83 83 83
Org. C full load [mg/m³] 2 2 2 2
Org. C partial load [mg/m³] 2 2 2 5
Dust content full load [mg/m³] 1 8 2 10.2
Dust content partial load [mg/m³] 5 5 5 5
Flue gas mass flow full load [g/s] 94.5 126.0 157.6 189.1
Flue gas mass flow partial load [g/s] 28.4 37.8 47.3 56.7
[1] Adjustable feet at maximum depth of thread
[2] The boiler cladding parts are removed. The dimension including fitted cladding is 106 cm.
[3] The minimum room height is required for maintenance work
[4] A draught stabiliser must be fitted if the specified draught of 15 Pa is exceeded
[5] Flue gas temperature can be adjusted electronically

4.12 Wood chipclassification
according to ENISO17225-4 standard
Property class > 14
Unit A1 A2 B1
Origin, source
Complete trees without roots;
Trunk wood;
Woodland offcuts;
Chemically untreated waste timber
Woodland timber and plan-
tation wood as well as other
natural timber;
Chemically untreated waste
timber
Particle size P > 14 mm P16S / P31S P16S / P31S
Water content M m-% M10 ≤ 10
M25 ≤ 25 M35 ≤ 35 M35 ≤ 35
Ash content A m-% water-free A1.0 ≤ 1.0 A1.5 ≤ 1.5
Bulk density BD > 15 kg/m³
BD150 ≥ 150
BD200 ≥ 200
BD250 ≥ 250
BD150 ≥ 150
BD200 ≥ 200
BD250 ≥ 250
BD300 ≥ 300
BD150 ≥ 150
Nitrogen N m-% water-free Not applicable N1.0 ≤ 1.0
Sulphur S m-% waterless Not applicable S0.1 ≤ 0.1
Chlorine Cl m-% waterless Not applicable Cl0.05 ≤ 0.05
Arsenic As mg/kg waterless Not applicable ≤ 1
Cadmium Cd mg/kg waterless Not applicable ≤ 2.0
Chromium Cr mg/kg waterless Not applicable ≤ 10
Copper Cu mg/kg waterless Not applicable ≤ 10
Lead Pb mg/kg waterless Not applicable ≤ 10
Mercury Hg mg/kg waterless Not applicable ≤ 0.1
Nickel Ni mg/kg waterless Not applicable ≤ 10
Zinc Zn mg/kg waterless Not applicable ≤ 100
Property class
The property classes A1 and A2 represent natural wood and chemically untreated waste timber.
A1 denotes fuels with low ash content, which have little or no bark, and fuels with low water content. Class A2 indi-
cates a slightly higher ash content and/or water content.
B1 extends the origin and source of class A and includes other materials, such as e.g. short rotation coppice,
wood from gardens and plantations etc., as well as chemically untreated waste wood from industry.
B2 (not approved for maxi mus L) includes waste wood from industry (also chemically treated wood) and che-
mically untreated used wood.
Particle size
Main portion [1]
(at least 60 m-%)
Fine material por-
tion
m-% (≤ 3.15 mm)
Coarse material
portion
m-% (length of particle)
Maximum length
of particles [2]
Coarse material
portion
(Maximum cross-section
area[3] of particle)
P16S 3.15 to 16 mm ≤ 15 % ≤ 6 % (> 31,5 mm) ≤ 45 mm ≤ 2 cm²
P31S 3.15 to 31.5 mm ≤ 10 % ≤ 6 % (> 45 mm) ≤ 150 mm ≤ 4 cm²
P45S 3.15 to 45 mm ≤ 10 % ≤ 10 % (> 63 mm) ≤ 200 mm ≤ 6 cm²
[1] The numerical values (P class) of the dimensions relate to the particle sizes that match the specified sieve opening size of a round hole
sieve (ISO 17827-1). The lowest possible property class should be specified. Only one class shall be given for wood shavings.
[2] The length and cross-section area shall only be determined for particles in the coarse material portion. In a sample of about 10 l, no more
than 2 pieces may exceed the maximum length if the cross-section area < 0.5 cm².
[3] For measurement of the cross-section area, it is recommended to use a transparent protractor, arrange the particles orthogonally (at right
angles) behind the protractor and estimate the maximum cross-section area of these particles with the aid of the cm² pattern.
3 Warranty, guarantee, liability
14 Operation manual maximus L

3 Warranty, guarantee, liability
Operation manual maximus L 15
Bulk density (kg/m³)
Water content (with moist mass being reference base) m-% 8 to 18 18 to 25 25 to 35
Conifer tree species Bulk volume [kg/m³] 160 to 180 180 to 200 200 to 225
Property class BD150 BD150 BD200
Deciduous tree species Bulk volume [kg/m³] 225 to 250 250 to 280 280 to 320
Property class BD200 BD250 BD250

4.13 Dimensions
The following figures show the maxi mus L with attached intermediate pellet store.
Top view
Abb. 2-8
3 Warranty, guarantee, liability
16 Operation manual maximus L

3 Warranty, guarantee, liability
Operation manual maximus L 17
Front
Abb. 2-9
Side view
Abb. 2-10

5 Use and operation
5 Use and operation
Touch display for operation
If the boiler is supplied with a mains power supply, the
boiler control starts ecomanager-touch. The control is
started up to show the main screen.
iOperate the touch display with your finger. Do
not use hard and/or sharp implements.
If no inputs are made for 5 minutes (factory setting),
the display will switch to standby mode.
Tapping the display again restarts the display with the
main screen.
Buffer battery in operating element
A replaceable buffer battery (CR2032) ensures that
data (time, settings) are retained in the operating unit
when the power supply is switched off.
5.1 Main screen of boiler control
Abb. 2-11:Main screen
1 Software version for boiler control
2 Outside temperature
3 Boiler output (rotational speed of induced
draught fan)
4 Boiler temperature and residual oxygen con-
tent in flue gas
5 Boiler operating mode > 18
6 Status line
Tapping the main screen changes to the Selection
menu > 18
5.2 Boiler operating mode
1Chimney sweep function
This function is used to perform the emission mea-
surements prescribed by law.
►Perform emissions measurement > 41
2STOP
The burner is switched off. No heating requests of the
consumers are fulfilled.
!WARNING - The burner must not start! Only
the automatic start-up of the heating circuit
pump is active to protect against frost.
3START
After pressing the START button, the burner is ready
for operation, and is able to fulfil heating requests
from the connected devices. The burner goes into
standby as soon as a heating request is fulfilled, or
the time release > 19 is no longer available.
5.3 Selection menu
Abb. 2-12: Selection menu
1 Customer menu > 19
2 Output test heating circuit > 19
CAUTION, only to be undertaken by qualified
personnel.
3 Heating circuit > 24
4 Domestic hot water heating > 28
5 Circulation control (optional) > 30
6 Buffer tank (optional) > 31
7 Solar system (optional) > 32
8 Temperature difference, charge control (optio-
nal) > 32
10 Weatherman function (optional) > 36
11 Information
15 Boiler cleaning > 38
18 Operation manual maximus L

5 Use and operation
5.3.1 Heating circuit output test
The available electrical outputs can be switched
on/off directly using the button. Can be used to test
the function of individual components.
!ATTENTION - To be carried out by qualified
personnel only.
Abb. 2-13
Abb. 2-14
5.4 Customer menu
Abb. 2-15
1 Required boiler values > 19
2 Diverter (optional) > 20
3 Heat exchanger cleaning [1] > 20
4 User lock > 21
5 Message log [2]: Recording of alarm and noti-
fication messages > 21
6 Operating hour counter > 21
7 Output test boiler (CAUTION, only to be under-
taken by qualified personnel).
8 Qualified personnel menu > 22
[1] The button is only visible if qualified personnel are log-
ged in.
[2] Button is only visible if a message is active.
5.4.1 Required boiler values
Abb. 2-16:Required boiler values
Burner release time 1
The burner can start within the release times; outside
of these times, starting does not take place and/or the
burner is stopped. A release time from 00:00 to 23:59
means that no restriction is pending and the burner
can start at any time.
!CAUTION - In order to protect against frost,
only automatic start-up of the heating circuit
pump is active outside time release.
Operation manual maximus L 19

5 Use and operation
iDrinking water heating in summer
If the boiler is used for heating domestic hot
water, the required chimney draught of 5Pa
may not be present in the summer months (or
outside the heating period). This may result in
smoke escaping in the boiler room.
Reason: High temperature on the chimney
stack (greater than 30°C); as a result, the coo-
ler air does not rise (~ 20°C air temperature
when the burner starts)in the chimney.
Remedy: Set the burner time release from
00:00 to 07:00 or from 21:00 to 23:59.
Burner release outside temperature 2
The burner may not start if the outside temperature
exceeds this value.
External boiler release 3
On switches the function to standby. I.e. a connected
external boiler may only start when it receives the
release from the SOLARFOCUS boiler (e.g. on the
basis of a lack of fuel, operating fault).
5.4.2 Automatic diverter for suction heads
Optional, i.e. the button of the same name and the
screen are only visible if this item has been bought.
Abb. 2-17
Probe switching 8
Automatic (recommended setting): After three suc-
cessful suction procedures at a head, the system swit-
ches to the next head. An even reduction of the level
in the pellet storage area is achieved.
Selectively: The probes are successively emptied
through extraction.
Only probe ….: Suction is only performed at the set
head. Switching to the next head must be performed
manually at the boiler control.
Storage area filled 9
–Pressing the button marks all suction probes 10
again as full (e.g. after filling the storage room).
Pressing the Status button changes the head sta-
tus (colour red: Head is empty; colour
green:Head is full).
–Red marking means: Probe is emptied through
extraction.
–Green marking means: Probe is full.
–The arrow 11 above the heads shows the
currently used head. PositionCmeans that the pel-
let hose has been sucked empty (happens auto-
matically, lasts a few seconds).
5.4.3 Heat exchanger cleaning
Abb. 2-18
Release from-to
Within the release times, heat exchanger cleaning
can start. A time release from 00:00 to 23:59 means
that no restriction is pending and the functions can
start at any time.
20 Operation manual maximus L