Buderus G201 User manual

For the operator
Please read carefully before
use.
DANGER!
If these instructions are not followed exactly, a fire
or explosion may be caused with serious property
damage or loss of life and serious injury.
– Do not store or use gasoline or any other flam-
mable liquids or vapors in the vicinity of this system
or any other heating system.
– The heating system must only be installed and
serviced by a qualified service company or qualified
service provider.
Operating Instructions Solid fuel boiler
Logano G201
6 720 618 152 - 08/2008 US

Logano G201 - Subject to technical modifications.
2
Dear Customer,
heat is our element – and it has been for more than 275
years. From the very beginning, we have invested all of our
energy and passion in order to develop individual solu-
tions to make your climate comfortable.
Regardless of whether heat, hot water or ventilation – with
a Buderus product you will have highly-efficient heating
technology in the proven Buderus quality, which will make
you comfortable reliably for a long time.
We manufacture using the latest technologies and take
care that our products are efficiently attuned to one
another. Operating efficiency and environmental friendli-
ness are always our focus.
Thank you for purchasing our product – and thus also for
efficient energy usage that provides great comfort. So
that things remain this way, please read these operating
instructions carefully. If you have problems, please con-
tact your installer. He will be glad to help you.
What if your installer cannot be reached? Then our cus-
tomer service is there for you!
We wish you great enjoyment with your new Buderus
product!
Your Buderus Team

Contents
Logano G201 - Subject to technical modifications. 3
Contents
1 Safety instructions and symbol key . . . . . . . . . . . . . 4
1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . 4
1.2 General safety instructions . . . . . . . . . . . . . . . . . . 4
2 Information about the appliance . . . . . . . . . . . . . . . . 5
2.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Standards, regulations and directives . . . . . . . . . 5
2.3 Operating tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.6 Product description . . . . . . . . . . . . . . . . . . . . . . . . 7
3 General instructions about the fuels wood
and coal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Wood firing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Coal firing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Condensate and tar formation . . . . . . . . . . . . . . . 8
3.4 Storing fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4.1 Storing wood correctly . . . . . . . . . . . . . . . . . . . . . 9
3.4.2 Storing coal correctly . . . . . . . . . . . . . . . . . . . . . . 9
4 Start-up and operation . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Before operating the appliance . . . . . . . . . . . . . 10
4.2 Check operating pressure, fill up the heating
water, and bleed the heating system . . . . . . . . .10
4.2.1 Checking the operating pressure . . . . . . . . . . . . 11
4.2.2 Topping up the heating water and bleeding
the heating system . . . . . . . . . . . . . . . . . . . . . . . .11
4.3 Setting the firing controller . . . . . . . . . . . . . . . . . 12
4.4 Heating up the boiler . . . . . . . . . . . . . . . . . . . . . . 13
4.5 Energy absorption . . . . . . . . . . . . . . . . . . . . . . . . 15
4.6 Re-filling fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.7 Constant heating mode (fire continues burning
overnight) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.8 Shutting down the boiler . . . . . . . . . . . . . . . . . . . 16
4.9 Shutting down the boiler temporarily . . . . . . . . . 16
4.10 Shutting down the boiler for a long period . . . . 16
4.11 Action in an emergency . . . . . . . . . . . . . . . . . . . . 16
5 Cleaning and maintenance . . . . . . . . . . . . . . . . . . . . 17
5.1 Cleaning the boiler . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.1 Frequent cleaning . . . . . . . . . . . . . . . . . . . . . . . . 18
5.1.2 Monthly cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1Safety instructions and symbol key
Logano G201 - Subject to technical modifications.
4
1 Safety instructions and symbol key
1.1 Explanation of symbols
Signal words are used to indicate the level of risk if coun-
termeasures are not taken.
–Caution indicates that minor damage to property may
occur.
–Warning indicates that minor personal injury or severe
damage to property may occur.
–Danger means that severe personal injury may occur.
Very serious cases may result in death.
Notes contain important information in cases where there
is no risk to the user or the appliance.
1.2 General safety instructions
Risk of poisoning
VInsufficient air supply may cause dangerous combus-
tion gas leaks.
VNever close off or reduce the size of air inlet or outlet
vents.
VThe boiler must not be operated until the obstruction
has been removed.
Explosive or easily flammable materials
VDo not store flammable materials or liquids near the
boiler.
VAbide by minimum distances to combustible materials.
Installation, operation
VOnly have the appliance installed by an approved heat-
ing contractor.
VDo not modify any parts that carry flue gas.
VDo not operate the appliance without water.
VAlways keep system openings (doors, maintenance
cover, fill openings) closed during operation.
VOnly use approved fuels.
VDo not cover or reduce the size of ventilation openings
in doors, windows and walls.
Maintenance and servicing
VRecommendation: sign a maintenance and inspection
contract with an approved heating contractor and have
the appliance serviced annually.
VThe flue gas system of the boiler must be in accor-
dance with local approvals for solid fuel boilers.
VHave the entire flue system cleaned once a year by a
qualified chimney sweep.
VThe operator is responsible for the general and environ-
mental safety of the system.
VRead and follow the safety instructions in the "Cleaning
and maintenance" chapter.
VUse only genuine spare parts.
Combustion/room air
VKeep combustion/room air free of aggressive materials
(e.g. ones that contain halogenated hydrocarbons,
chlorine or fluorine compounds). This will help you pre-
vent corrosion.
VPrevent heavy accumulation of dust.
Safety instructions in the text are marked
with a warning triangle and printed on a gray
background.
Notes are identified in the text by this sym-
bol. They are separated by horizontal lines
above and below the text.

2
Information about the appliance
Logano G201 - Subject to technical modifications. 5
2 Information about the appliance
These instructions contain important information for the
system operator for the safe operation of the boiler.
2.1 Designated use
The Logano G201 solid fuel boiler is a heating boiler for
coal and wood firing (split log firing) in single and multi-
family houses. In order to ensure proper use, please
observe the details on the rating plate and the specifica-
tions to ensure proper use of this appliance.
2.2 Standards, regulations and direc-
tives
2.3 Operating tips
When operating the heating system observe the follow-
ing:
VThe boiler may only be operated by adults who are
familiar with the instructions and boiler operation.
VMake sure that children are not allowed in the vicinity of
the boiler unsupervised when it is in operation.
VDo not use any fluids for lighting or boosting the boiler.
VAshes should be placed in a steel container with a tight
fitting lid, and moved outdoors. Other waste must not
be placed in this container.
VDo not place or store any flammable objects near the
filling or combustion chamber or at a safety distance of
24 to 48 inches around the boiler.
VDo not place any flammable objects on the boiler.
VOnly clean the surface of the boiler with non-flammable
cleaners.
VDo not store any flammable materials in the boiler room
(e.g. petroleum, oil).
VDo not use any flammable liquids for heating.
VWhile the boiler is operating, do not exceed the rated
output of the boiler (overheating).
VOperate the boiler at a maximum temperature of 194 °F
and check it regularly during operation.
VOperate the boiler with a minimum return temperature
of 131 °F. Ensure that this temperature limit is adhered
to with a suitable set-up.
VThe minimum boiler water temperature must be above
131 °F, because with a lower temperature, steam can
condense. This has negative consequences for the
proper operation of the boiler and its life span.
VThe boiler operator must follow the operating instruc-
tions.
VThe boiler operator may only start up the boiler, take the
boiler out of operation, and clean it. All other work must
be performed by an authorized service company.
VThe service technician is obligated to inform the boiler
operator about the operation and the correct, safe
operation of the boiler.
VIn case of danger of explosion, fire, escaping combus-
tible gases or vapors (e.g. vapors that arise when glu-
ing linoleum, PVC, etc.), do not operate the boiler.
VHeed the flammability of building materials
(Æinstallation and maintenance instructions).
2.4 Air supply
Observe all local codes and standards during
operation! DANGER: Risk of fatal injury from lack of
oxygen in the boiler room!
VMake sure there is adequate fresh-air ven-
tilation by providing air vents to the out-
side.
VPoint out to the system operator that
those air vents must remain open.
WARNING: System damage and risk of
injury in case of incorrect start-up!
Lack of adequate air for combustion can lead
to creosote formation.
VMake sure there is adequate fresh-air ven-
tilation by providing air vents to the out-
side.
VPoint out to the system operator that
those air vents must remain open.
WARNING: Risk of system damage due to
aggressive materials in the ventilation!
During combustion, halogenated hydrocar-
bons that contain chlorine or fluorine com-
pounds cause increased corrosion in the
boiler.
VKeep ventilation free of aggressive materi-
als.
The boiler draws in the required combustion
air from the environment. The boiler may only
be set up and operated in rooms that are per-
manently well-ventilated!

2Information about the appliance
Logano G201 - Subject to technical modifications.
6
2.5 Disposal
VPacking materials made of wood and paper can be
burned in the boiler.
VDispose of packaging in an environmentally responsi-
ble manner.
VDispose of old devices in an environmentally responsi-
ble manner at an authorized disposal site.

2
Information about the appliance
Logano G201 - Subject to technical modifications. 7
2.6 Product description
The Logano G201 is a solid fuel boiler and approved for
fueling with coal and wood chunks.
The boiler consists of:
–Airvent[1]
– Ash pan door [2]
– Fuel filler door [3]
– Firing controller [4] with rod and chain
– Aquastat [5]
– Manifold [6] with safety valve and thermometer/
manometer.
Using the firing controller [4], the desired boiler water
temperature is set and limited to this maximum value.
The firing controller [4] is connected to the air vent [1] via
a chain (in the ash pan door) and regulates the airflow of
the boiler. The warmer the boiler becomes, the more the
air vent is closed so that the set boiler water temperature
is not exceeded.
The fuel filler door [3] allows you to fill the ignition cham-
ber with fuel.
The ignition chamber transmits the heat generated to the
heating water.
The ash container is behind the ash pan door [2].
The thermometer/manometer on the manifold [6] displays
the temperature in the boiler and the water pressure.
The jacket is lined with insulation materials and thus pre-
vents radiation loss and stand-by heat losses.
Fig. 1 Logano G201
1Air vent
2Ash pan door
3Fuel filler door
4Firing controller
5Aquastat
6Manifold
Exhaust flap
The exhaust flap is opened to heat up a cold boiler or in
case of poor flue draft (ÆFig. 2 above). This allows hot
flue gas to escape more quickly into the chimney and the
chimney "draws" better.
When the boiler is operating normally and when there is
sufficient flue draft, the exhaust flap is closed (ÆFig. 2
below). This way, less heat is lost through the chimney.
Fig. 2 Exhaust flap (top: open; bottom: closed)

3General instructions about the fuels wood and coal
Logano G201 - Subject to technical modifications.
8
3 General instructions about the fuels wood and coal
Wood and coal can be used as fuels.
The flue gas temperatures are generally 212 – 392 °F.
Depending on local conditions, fuels used (wood or coal),
and how clean the boiler is, these values can be
exceeded.
3.1 Wood firing
Prescribed is split and dried wood with a diameter of
6 inches and a maximum wood humidity of 20 %.
Only use dry, natural, chunky wood. With a wood humidity
of more than 20 %, the boiler output is reduced. In addi-
tion, there can be increased tar formation, which reduces
the life span of the boiler. The specified output values and
the unfettered function of the boiler can only be guaran-
teed with a maximum wood humidity of up to 20 %.
As substitute fuels, the following are permissible (reduced
output and shorter maintenance intervals): wood briquets
and wood chips.
3.2 Coal firing
Best suited are anthracite coal and coke – any kind of
lump 1 (0.8 – 1.6 inches). The burning times for coal are
significantly longer than the burning times for wood.
As substitute fuels, the following are permissible (reduced
output and shorter maintenance intervals): anthracite coal
and coke type lump 2 (0.4 – 0.8 inches) or fragments
(1.6 – 4.0 inches) and pressed fuels.
3.3 Condensate and tar formation
Improper operation of the boiler causes excessive con-
densate and tar formation. This way, damage to the boiler
and the flue gas system can occur.
When heating up the cold boiler, water condenses in the
boiler, which runs down on the interior walls. This way,
you might think that the boiler is draining off. This "sweat-
ing" of the boiler ends as soon as the ashes accumulate
on the interior walls of the boiler.
In case of operation at low boiler temperature (return temp
less than 131 °F) and fuel with too high a humidity con-
tent, condensation can also form on the heating surfaces.
Here too, the condensation runs downwards.
Heating with too low a boiler temperature causes tar for-
mation and can cause premature damage to the flue gas
system due to sooting.
VFollow the operating instructions for the boiler.
VOperate the boiler at the recommended operating tem-
peratures.
VOnly heat the boiler with the recommended fuels
(ÆChapter 3.1 and 3.2).
VRemove tar accumulations with the cleaning scraper
when the boiler is warm.
DANGER: Danger of fatal accident due to
escaping carbon monoxide (CO)!
In case of firing with brown coal, the boiler
can silt up and CO can escape.
VDo not use brown coal for firing.
WARNING: Health and/or system damage
due to the use of unsuitable fuels!
The use of unsuitable fuels can create mate-
rials that endanger health and/or the heating
system.
VDo not use plastics, household waste,
chemically-treated wood, old paper, chips,
bark or chipboard waste for firing.
Boiler type
Maximum length of split
or chipped wood
27 15 ¼ inches
35 19 ¼ inches
40 27 ¼ inches
Tab. 1 Maximum length of split or chipped wood
Type of
wood
Heating value
(with wood humidity of 20 %)
Weight per
cord LBs
BTUs per cord
air-dried wood
Beech 3000 24,000,000
Oak 3250 26,000,000
Pine 1800 17,000,000
Spruce 2100 18,000,000
Tab. 2 Energy value of various types of wood

3
General instructions about the fuels wood and coal
Logano G201 - Subject to technical modifications. 9
3.4 Storing fuel
3.4.1 Storing wood correctly
Storage outdoors
– If possible, split wood must be stored on the south side
of a building in an area protected against precipitation
and ventilated.
– Stack split wood loosely against a wall and support it
on at least one side.
Storage indoors
– In case of short-term storage inside a building, select a
dry and ventilated room.
Fig. 3 Wood storage outdoors
3.4.2 Storing coal correctly
Coal is suitable for storage outside of and inside of build-
ings. For safe storage, the following conditions for the
storage location must be heeded:
– Do not store any other flammable materials in the stor-
age location.
– The temperature in the storage location may not
exceed 75 °F in order to prevent gas releases from the
fuel.
– Protect storage location against snow and rain.
– Do not store any damp coal on dry coal.
– Plan the coal delivery when the coal storage is 75 %
empty.
– If possible, store new and old coal separately.
Do not store larger quantities of wood in
buildings for a long time!

4Start-up and operation
Logano G201 - Subject to technical modifications.
10
4 Start-up and operation
4.1 Before operating the appliance
Before start-up, heed the following instructions for per-
sonal safety:
– Unsupervised operation of the boiler with an open door
is not permitted.
– The use of ignition accelerants in the boiler is forbid-
den.
4.2 Check operating pressure, fill up the
heating water, and bleed the heating
system
The water used for filling the heating system loses a sub-
stantial amount of volume in the first few days due to the
release of its gas content. This causes air pockets to form
and the heating water starts to make noises.
VWith new heating systems, check the operating pres-
sure daily at first, topping up the heating water and
bleeding the radiators if needed.
VLater on, check the operating pressure monthly, top-
ping up heating water and bleeding the boiler and radi-
ators if needed.
DANGER: Risk of injury from open boiler
doors!
VKeep the ignition chamber door of the
boiler closed during operation.
DANGER: Risk of injury from too-high tem-
perature of the flue gas header (ÆFig. 16,
page 19)!
VDo not touch the flue gas header during
operation.
WARNING: Damage to the system!
Start-up without a sufficient quantity of water
destroys the appliance.
VAlways operate the boiler with sufficient
water.

4
Start-up and operation
Logano G201 - Subject to technical modifications. 11
4.2.1 Checking the operating pressure
Your heating contractor will have set the system to the
required operating pressure of at least 15 psi (1 bar) and
entered the setting in Tab. 3, page 12.
VRead off the current operating pressure and tempera-
ture from the temperature/pressure gauge.
VIf the temperature/pressure gauge needle drops below
the minimum pressure of 15 psi, the operating pressure
is too low. Add water to the system.
Fig. 4 Pressure/temperature gauge
4.2.2 Topping up the heating water and bleeding
the heating system
Ask your heating contractor to show you where the boiler
fill & drain valve for topping up the heating system is
located in your heating system.
VConnect the hose to the water tap. Push a hose filled
with water onto the hose connection of the boiler fill &
drain valve, fasten with a hose clip, and open the boiler
fill & drain valve.
VSlowly fill the heating system. Observe the pressure
gauge (pressure/temperature gauge) while doing so.
VClose the water tap and the boiler fill & drain valve once
the required operating pressure has been reached.
VBleed the heating system via the purge valves on the
boiler piping.
VTop up with additional water if the pressure drops as a
result of bleeding the system.
VRemove the hose from the boiler fill & drain valve.
7 747 010 720-24.2RS
WARNING: Risk to health due to pollution of
drinking water!
VAlways observe the regulations and stan-
dards applicable in your jurisdiction for the
prevention of contamination of drinking
water (e.g. by water from heating sys-
tems).
CAUTION: Risk of damage to system due to
temperature stress!
If you fill the heating system when it is hot, the
resulting temperature stresses can cause
stress cracks. The boiler will then leak.
VOnly fill the heating system when cold (the
flow temperature should be no more than
100 °F).

4Start-up and operation
Logano G201 - Subject to technical modifications.
12
Fig. 5 Setting the firing controller
1Red marking (70 °C/158 ° F)
4.3 Setting the firing controller
VSet the firing controller to the red marking (70 °C/
158 °F) (ÆFig. 5) or depending on the outdoor tem-
perature according to Tab. 4.
VHeat up the boiler (ÆChapter 4.4, page 13).
VAdjust the tension of the chain by setting the lever (or
shortening the chain) so that the air vent is closed at
70 °C/158 °F boiler water temperature up to a mini-
mum degree (0.2 inches) and the chain hangs some-
what loosely.
This prevents sulfur gas formation when the boiler
water temperature has been reached.
CAUTION: Risk of system damage due to
frequent topping up!
If you have to top up the heating water fre-
quently, the heating system may suffer dam-
age from corrosion or scaling, depending on
the water quality.
VAsk your heating contractor if the local wa-
ter can be used untreated or whether it
needs to be treated.
VNotify your heating contractor if you find
you need to top up your heating system
frequently.
Operating pressure
Design operating pressure
(optimum setting) _____________ psi
Maximum heating system
operating pressure
(standard = 30 psi) _____________ psi
Tab. 3 Operating pressure (entered by system installer)
If the air vent is closed completely, there is no
complete combustion. Tar accumulates on
the heating surfaces, which requires more
cleaning effort.
Outdoor
tempera-
ture in °F
Flow tempera-
ture in °F
Setting
firing control-
ler in °C
5 194 90
14 176 80
28 158 70
32 149 65
41 140 60
50 113 45
60 104 40
Tab. 4 Settings for the firing controller depending on
the outdoor temperature

4
Start-up and operation
Logano G201 - Subject to technical modifications. 13
4.4 Heating up the boiler
VOpen the ash pan door.
VTurn the bolt [2] of the front grate counter-clockwise to
the stop.
VFold the front grate [1] downwards.
Fig. 6 Folding the front grate downwards
1Front grate
2Bolt
VTurn the bolt [2] of the segment plate counter-clock-
wise to the stop.
VRemove the segment plate [1].
Fig. 7 Removing the segment plate
1Segment plate
2Bolt
VTo increase the draft of the boiler, open the exhaust
flap.
Fig. 8 Open the exhaust flap
WARNING: Risk of system damage due to
incorrect operation!
Overfilling the firing chamber with fuel can
cause overheating and damage to the boiler.
VAdjust fuel quantity to the energy absorp-
tion of the heating system
(ÆChapter 4.5, page 15).
Important for clean burning in the boiler are
the correct operation of the boiler and a suf-
ficient flue draft for the flue gas system.

4Start-up and operation
Logano G201 - Subject to technical modifications.
14
VInsert a layer of paper [2].
VInsert a 3 to 4 inch layer of fuel (thin kindling, coal or
coke) on the paper layer [2]. Do not use any thick logs.
VLight the fuel inside the boiler.
VIf you are using solid accelerant (coal igniter), light the
accelerant outside of the boiler and then place it on the
ignition material.
VFold the front grate upwards and insert the segment
plate.
VLeave the ash pan door slightly open.
VLet the fuel burn for 15 – 20 minutes until there are
embers.
VClose the ash pan door.
Fig. 9 Inserting the paper layer and fuel
1Fuel (e.g. wood)
2Paper layer
VOpen the fuel filler door and fill the ignition chamber [1]
to ¼ of its volume with fuel.
VClose the fuel filler door.
VTo prevent heat losses in the chimney, close the
exhaust flap depending on the flue draft (ÆFig. 11).
If the flue gases are not drawing properly (flue draft is
not sufficient), open the exhaust flap a little again
(ÆFig. 8, page 13).
Fig. 10 Inserting fuel (heating up)
1Combustion chamber
Fig. 11 Closing the exhaust flap
Before the fuel space [1] is filled, the fuel in-
serted must be completely burned off and
there must be sufficient embers.
The heating-up time may vary depending on
how clean the boiler is, the local conditions,
the fuels used, and the weather (low pressure
in the flue gas system).
With wood firing, note: logs that are too short
and too thick cause uneven burning.
VOnly use logs of the specified thickness
and length (ÆChapter 3.1, page 8).
Large types of anthracite coal and coke burn
longer; with too great a quantity of fuel, the
output can be reduced. Check and stoke the
fire at short intervals.

4
Start-up and operation
Logano G201 - Subject to technical modifications. 15
4.5 Energy absorption
The energy absorption of the heating system (consisting
essentially of boiler and buffer storage) depends on the
actual value of the water temperature of the buffer stor-
age. For economical operation of the heating system, the
fuel quantity used must be adjusted to the respective
energy absorption. This way, overheating of the boiler is
avoided and pollutant emission is reduced.
4.6 Re-filling fuel
Depending on the type and quality of fuel, the burning
duration of a boiler filling with nominal output of the boiler
is approximately 2 to 4 hours with wood firing and approx-
imately 3 to 5 hours with coal firing.
Fig. 12 Re-filling fuel: wood
In order to re-fill fuel or check the fill level:
VOpen the fuel filler door a crack and wait approximately
10 seconds so that there is less flue gas in the fuel
space. As soon as the flue gas quantity is reduced,
open the fuel filler door completely.
VIn order to reduce the smoke formation in the boiler
room during re-filling, open the exhaust flap
(ÆFig. 13 above).
VStoke the fire with a poker and insert the desired quan-
tity of fuel.
Through regular stoking, even combustion and a con-
stant power output of the boiler can be achieved.
VClose the fuel filler door [1] and exhaust flap (ÆFig. 13
below).
Fig. 13 Exhaust flap (top: open; bottom: closed)
The combustion is disturbed if the fuel filler
door is opened in between. This can cause
poor burning and excessive flue gas emis-
sion.
VIf possible, let the fuel burn completely
down.
A quick covering of the embers with fuel re-
duces the emission of flue gases from the ig-
nition chamber.
Note if you are burning wood: only re-fill
enough wood that there is a distance of at
least 2 inches remaining between the upper-
most log and the upper edge of the ignition
chamber (ÆFig. 12).
Note if you are burning coal: re-fill coal up
to a height of 12 inches. The best conditions
for a coal fire are if the height and width of the
fill quantity are equal. On each firing, fill the
ignition chamber with coal up to the begin-
ning of the fuel fill door.

4Start-up and operation
Logano G201 - Subject to technical modifications.
16
4.7 Constant heating mode
(fire continues burning overnight)
In constant heating mode, the boiler can be operated for
twelve hours at a reduced heat output.
Adjust the boiler settings as follows for constant heating
mode:
VStoke the fire and completely fill the fuel feeder box
(split wood).
VIn order to reduce the combustion air intake, close the
air vent almost completely.
VOpen the exhaust flap.
This way, the formation of tar and soot accumulations
in the flue gas system are reduced during constant
heating operation.
VSet the return temperature booster on the mixing valve
so that the boiler water temperature rises to between
176 and 194 °F.
The next day, you can quickly bring the boiler back up to
normal heat as follows:
VRe-fill fuel and reset the return temperature booster to
its normal position.
VOpen the air flap a crack (0.2 inches).
VClose the exhaust flap after successful heating up.
4.8 Shutting down the boiler
VWhen shutting down the boiler for a long period (e.g.
at the end of the heating season) carefully clean it,
since the humidity content of the ashes can cause cor-
rosion.
VWhen there is a risk of frost, protect your heating sys-
tem against freezing up. Either empty the water-carry-
ing lines or fill up the system with anti-freeze (follow the
manufacturer's instructions).
4.9 Shutting down the boiler
temporarily
VAllow the boiler to cool.
VOpen the fuel fill door and clean the firing chamber.
VOpen the ash pan door.
VDispose of the ashes.
VClean the ash pan.
VClose the ash pan door.
VClose the fuel filler door.
4.10 Shutting down the boiler
for a long period
When shutting down the boiler for a long period (e.g. at
the end of the heating season), carefully clean it.
4.11 Action in an emergency
In the event of an emergency, e.g. if there is a risk of
explosion or in case of fire, proceed as follows:
VNever put yourself at risk of fatal injury. Your own safety
must always take the highest priority.
VCarefully open the fuel filler door.
Carefully opening the fuel filler door prevents the
flames from leaping out towards you.
VExtinguish the fire with water.
DANGER: Risk of fatal accident due to low-
temperature carbonization gases!
When the boiler is running at low output, low-
temperature carbonization gases can be pro-
duced that can cause smoke poisoning if in-
haled.
VDo not inhale any visible fumes.
VMake sure the boiler room is well-ventilat-
ed.
VClean the boiler and flue system
(ÆChapter 5.1, page 17 and following).
VHave the flue draft of the chimney
checked.
CAUTION: System damage due to tar and
condensate!
With boiler water return temperatures below
131 °F, there is more tar and condensate in
the ignition chamber and the life span of the
boiler is reduced sharply.
VOperate boiler constantly with a boiler wa-
ter temperature between 176 °F and
194 °F.
WARNING: Risk of system damage due to
frost!
If the heating system has been shut down, it
may freeze up in cold weather conditions.
VWhen there is a risk of frost, protect your
heating system against freezing up.
VIf there is risk of frost and you are not op-
erating the boiler, empty the system.
To shut the boiler down, let it burn off every-
thing without artificially accelerating the com-
bustion process.

5
Cleaning and maintenance
Logano G201 - Subject to technical modifications. 17
5 Cleaning and maintenance
5.1 Cleaning the boiler
Soot and ash accumulations on the interior walls of the
boiler reduce the heat transfer. Insufficient cleaning
increases fuel consumption and can cause undesirable
pollution of the environment.
The ashes that are created during combustion accumu-
late primarily in the fuel space.
VClean the fuel space regularly every 1 to 3 days.
WARNING: Damage to system due to im-
proper maintenance!
Insufficient or improper maintenance of the
boiler can cause damage and void warranty
claims.
VEnsure regular, extensive, and profession-
al maintenance of the heating system.
The regular professional maintenance of the
heating system maintains its efficiency, guar-
antees high reliability, and environmentally-
friendly combustion.
The cleaning of the heating system depends
on the fuel quality and the environmental con-
ditions.
DANGER: Risk of environmental damage
due to improper operating state!
VClean the boiler regularly depending on
fuel consumption.
WARNING: Risk of system damage due to
insufficient maintenance and cleaning!
Larger quantities of ashes in the fuel space
can cause overheating of and damage to the
boiler.
VRemove the ashes from the boiler regular-
ly.
Do the cleaning before you begin to heat and
only when the combustion chamber has
cooled off.
WARNING: Risk to health due to incorrect
operation!
Opening the fuel filler door while heating
causes pressure fluctuations in the boiler
and the uncontrolled escape of flue gases.
VOnly open the fuel filler door when the
boiler is not lit and it has cooled off.

5Cleaning and maintenance
Logano G201 - Subject to technical modifications.
18
5.1.1 Frequent cleaning
The ashes must be removed from the combustion cham-
ber/ash pan every 1 to 3 days.
VOpen the ash pan door [2].
VFold the front grate downwards and remove the seg-
ment plate (ÆFig. 6, page 13 and Fig. 7, page 13).
VTip the combustion residues into the ash pan.
VInsert the segment plate and fold the front grate
upwards.
VRemove the combustion residues from the ash pan
with the ash shovel [1].
Fig. 14 Cleaning the ash pan
1Ash shovel
2Ash pan door
5.1.2 Monthly cleaning
The heat exchanger heater flue and the flue gas header
(ÆFig. 16, page 19) must be checked monthly and
cleaned if necessary. Insufficient cleaning can cause
damage to the boiler and the voiding of warranty claims.
Heat exchanger heater flue, cleaning
VOpen the fuel fill door [2] and remove the waste steam
plate [1].
VClean the ash residues from the heat exchanger with
brushes.
Do not bump against the back wall in order to avoid
damage and leaks.
VInsert the waste steam plate [1] and close the fuel filler
door [2].
VTake the steps described under 5.1.1.
Fig. 15 Heat exchanger heater flue, cleaning
1Waste steam plate
2Fuel filler door
Do not place hot ashes in plastic and waste
containers.
WARNING: Risk of system damage due to
insufficient maintenance and cleaning!
VClean the heat exchanger heat flues and
the flue gas header regularly.

5
Cleaning and maintenance
Logano G201 - Subject to technical modifications. 19
Cleaning the flue gas header
The flue gas header [2] is cleaned via the inspection aper-
ture. The inspection aperture is on the bottom of the flue
gas header and is sealed with the cleaning cover [1].
VUnscrew the two wing nuts on the cleaning cover.
VCarefully remove the cleaning cover [1].
VRemove the combustion residues via the inspection
aperture.
VClose the inspection aperture with the cleaning cover
[1]. Check that the seal is seated correctly.
VScrew the cleaning cover [1] back on with two wing
nuts.
Fig. 16 Cleaning the flue gas header
1Cleaning cover
2Flue gas header

6Troubleshooting
Logano G201 - Subject to technical modifications.
20
6 Troubleshooting
If a fault occurs, contact your heating contractor.
Fault Cause Remedy
Boiler output too low Calorific value of the fuel used is too
low, humidity of the fuel is higher
than 20 %
Use prescribed fuel with prescribed
humidity
Operating conditions not adhered to Inform your heating contractor and
have flue draft, return temperature
checked
Too much condensate forms in the
fuel space of the boiler, black liquid
leaks out of the fuel filler door
Boiler output too high Insert less fuel.
Check possible heat loss in the
object
Incorrect or too-humid fuel Use prescribed fuel with prescribed
humidity
Low boiler water temperature Inform heating contractor and check/
increase minimum boiler water tem-
perature and ensure a minimum tem-
perature of 131 °F for the return due
to a suitable setting of the mixing
valve
Tab. 5 Overview of faults