LOHBERGER VARIOLINE AC 105 User manual

Issued 06-2016
OPERATING MANUAL
with INSTALLATION INSTRUCTIONS
GB
VARIO LINE
AQUA THERM
COMBI
AC 105-

Page 2
Table of contentsTable of contentsTable of contents
Explanation of symbolsExplanation of symbolsExplanation of symbols
Important information in this manual is indicated by the following symbols:
NOTE: Instructions for correct use of the stove. It is the operator’s responsibility to follow these instructions.
CAUTION: This symbol refers to particularly important notes.
DANGER: This symbol indicates important rules of conduct for avoiding injury or material damage.
1. Important standards / guidelines.................................3
2. Important instructions prior to installation
and start-up.................................................................4
3. Transport / Unpacking / Inspection..............................5
Transport securing devices 5
Transport options 5
4. Safety instructions........................................................6
5. Description of the appliance / Adjustment...................6
Combustion chamber, firebox 6
Oven 6
Oven thermometer 6
Cooking surface 7
Stove frame (adjustable in the stove type CLASSIC) 7
ADJUSTMENT OF THE STOVE FRAME 7
Base recess 7
Appliance height 7
6. Installing the appliance................................................9
Load-bearing capacity of the floor 9
Floor pad as a protection against flying sparks 9
Safety clearances 9
Overhead kitchen cabinets 9
Safety clearances flue gas pipe 9
7. Chimney connection .....................................................10
Schematic diagram flue gas connection (Figure 13) 10
The chimney 10
Connection stove - chimney 10
The necessary discharge pressure (“Chimney draught”) 10
8. Combustion air .............................................................11
Outdoor air supply for combustion (optional equipment) 11
Examples of possible connections 11
9. Connection of the heating system................................12
Heat output to water 12
Return flow temperature boost 12
Temperature safety relief valve 12
Expansion tank 12
Safety valve 13
Automatic air bleed 13
Example of connections 13
10. Operating the stove....................................................14
Start-up flap 14
Air control 14
Primary air control 14
Secondary air control 14
Grate riddling 15
Adjustment of the grate 15
Winter mode / Summer mode 15
Changing between boiler and cooking operation 15
11. Combustion .................................................................16
Prerequisites for efficient combustion 16
The combustion process 16
Clean combustion 16
JETFIRE Flame convergence plate 16
12. Fuels ...........................................................................17
Suitable fuels 17
Unsuitable fuels 17
Prohibited fuels 17
13. Start-up.......................................................................17
Heating up 17
Adding Fuel 18
Air supply settings 18
Heating 18
Fuel filling level 18
Cooking 18
Baking and Roasting 18
Heating in between seasons 18
14. Maintenance and Cleaning .........................................19
Cleaning opening 19
Removing cooking plate 19
Using a vacuum cleaner 19
Cleaning the heat exchanger 19
Cleaning the connecting piece 19
Grate 20
Ash pan 20
Oven door 20
Removing the oven door 20
Reinstalling the oven door 20
Cleaning the glass viewing window of the oven 20
Side rails of the oven 20
Cleaning the glass viewing window of the combustion chamber 21
Steel Cooking Plate 21
Stoves with glass ceramic cooking surfaces 22
15. Troubleshooting..........................................................23
16. After-sales service .....................................................24
17. Appliance dimensions.................................................25
18. Technical data.............................................................26
19. Type testing ...............................................................26
Warranty ...........................................................................27

Page 3
With the purchase of the solid fuel stove VARIOLINE you have selected a high-
quality product made by LOHBERGER.
Apart from the beautiful and timeless design, we attach great importance to
a mature combustion technology, high-quality materials as well as excellent
workmanship.
Correct handling and proper care are a prerequisite for trouble-free operation
and a long service life. Therefore please read the information in this operating
manual carefully. With the above in mind, we believe that this appliance will
give satisfactory service for many years.
Your LOHBERGER Heiz + Kochgeräte Technologie GmbH
ÖNORM (Austrian Standard) M7550
Central heating boiler up to 100 °C:
definitions, requirements, tests, marking
of conformity
ÖNORM (Austrian Standard) M 7510 / 1
Guidelines for the inspection of central
heating systems.
ÖNORM (Austrian Standard) M 7510 / 2
Guidelines for the inspection of central
heating systems; standard values.
ÖNORM (Austrian Standard) B8130
Safety devices.
ÖNORM (Austrian Standard) B8131
Closed water heating systems; safety
requirements.
ÖNORM (Austrian Standard) B8133
Safety requirements for water heating
systems.
DIN 4751 Part 1
Safety devices for heating systems with
flow temperatures of up to 110°C (120°C
in preparation)
DIN 4751 Part 2
Safety devices for heating systems with
flow temperatures of up to 110°C (120°C
in preparation); open and closed water
heating systems up to 349 kW (300000
kcal/h) with thermostatic safety device.
DIN 4751 Part 4
Safety devices for heating systems
with flow temperatures of up to 120°C;
closed water heating system with static
heights exceeding 15 m or rated heat
output over 350 kW.
DIN 1988:Drinking water supply systems
on building sites (technical require-
ments).
ÖNORM (Austrian Standard) EN 303-5
Boiler for solid fuels, charged manually
and automatically up to 300 kW. Defini-
tions, requirements, testing and marking
of conformity
TRVB H118
Technical specifications regarding
preventive fire protection for automatic
wood-fired heating systems.
ForewordForewordForeword
Our contribution towards climate protectionOur contribution towards climate protectionOur contribution towards climate protection
1.1.1.
Important standards / guidelinesImportant standards / guidelinesImportant standards / guidelines
During combustion, wood only emits the same amount of CO2 that it previously
held as a tree. It makes no difference whether the wood burns or rots in the
forest.
Thus heating with wood corresponds to the natural biological cycle.
When installing and starting-up the appliance, observe the local fire prevention re-
gulations and building regulations as well as the following standards /regulations:

Page 4
CAUTION! CHILDREN PLAYING!
The appliance becomes very hot when it is in operation. Make sure that child-
ren are never in the immediate vicinity of the appliance when it is in use.
CORRECT INSTALLATION AND START-UP
The safety of the appliance can only be assured if it has been installed by a trai-
ned technician, in compliance with the standards and regulations applicable at
the place of installation. Make sure that the requirements of the applicable laws
and standards as well as the local fire protection laws and building regulations
are adhered to. Please consult the local qualified chimney sweep regarding the
assessment of building and technical conditions.
When operating the stove, make sure that there is an adequate supply of fresh
air in the room where the appliance is located. An air exchange of at least 0.8
times per hour by means of a permanent and secure ventilation of the room
must be ensured. If the windows and doors are tightly sealed or if other ap-
pliances such as extractor hoods, tumble driers, ventilators etc. draw air from
the room where the appliance is located, it may be necessary to provide fresh
combustion air from outside. The inlet apertures for combustion air must not
be closed.
For the first 2 to 3 days run the stove with a low output. This allows the stove
lining to dry out slowly and as a result it extends the service life significantly.
During the first few days of operation, expansion cracks may form in the fire-
clay-cladding. However, this does not impair the functioning of the appliance.
CORRECT OPERATION
Correct operation, in compliance with the installation instructions and with the
operating manual as well as with the instructions regarding safety and envi-
ronmental protection.
Bear in mind that the appliance is not childproof (doors, etc.) and therefore it
must not be operated by children or other people who are not authorised or
trained.
If the appliance is not installed properly and if the instructions (as stated in
the technical documentation and operating manual) regarding the start-up and
operation of the appliance are not followed, all warranty claims will become
null and void.
Open the start-up flap only when heating up the stove, keep the combustion
chamber door and ash door closed at all times. Avoid overheating the stove
(e.g. red-hot steel hotplate). The warranty does not cover any resulting dama-
ge.
Only use suitable fuels by choosing environmentally sustainable, high-quality
and dry fuels (see fuels on page 17).
Only operate our central heating stoves using a return flow temperature boost
(thermal valve, motor-driven mixing valve). Faults caused by failure to follow
this instruction are excluded from the warranty cover.
CHIMNEY REQUIREMENTS FOR HEATING SYSTEMS
Before starting up the appliance for the first time, the local qualified chimney
sweep must certify the suitability and readiness for operation of new or existing
chimneys by a declaration of conformity.
The owner must ensure that the chimney is free of obstructions (no coverings
or blockages). Please point out existing faults and /or alterations in the chim-
ney and the heating system. Because of low exhaust gas temperatures when
the seasons change the chimney must be leak-free and humidity-resistant.
Make sure that flue and exhaust gas can escape freely to the outside.
REGULAR CLEANING AND MAINTENANCE
To ensure the functionality and efficiency of the appliance, regular maintenance
and cleaning work must be carried out on every fireplace and all the connected
system components (e.g. chimney, connecting ducts, etc.). Please observe the
instructions regarding maintenance and cleaning in this operating manual.
Your chimney sweep will also be happy to clean the fireplace. Only clean and
properly adjusted appliances work efficiently.
2.2.2.
Important instructions prior to installation and start-upImportant instructions prior to installation and start-upImportant instructions prior to installation and start-up
Before connecting the appliance to the chimney,Before connecting the appliance to the chimney,Before connecting the appliance to the chimney,
inform the local qualified chimney sweepinform the local qualified chimney sweepinform the local qualified chimney sweep
Please read the information in this manual care-Please read the information in this manual care-Please read the information in this manual care-
fully before you install or start up your appliancefully before you install or start up your appliancefully before you install or start up your appliance
for the first time.for the first time.for the first time.
Failure to do so causes the warranty to becomeFailure to do so causes the warranty to becomeFailure to do so causes the warranty to become
null and voidnull and voidnull and void
Keep this operating manual in a safe place.Keep this operating manual in a safe place.Keep this operating manual in a safe place.
Should it be lost, we will be happy to send youShould it be lost, we will be happy to send youShould it be lost, we will be happy to send you
a new copy. You will find important informati-a new copy. You will find important informati-a new copy. You will find important informati-
on in it as regards safety, use, proper care andon in it as regards safety, use, proper care andon in it as regards safety, use, proper care and
maintenance of the appliance, so that you canmaintenance of the appliance, so that you canmaintenance of the appliance, so that you can
enjoy your appliance for a long time.enjoy your appliance for a long time.enjoy your appliance for a long time.
If there are any queries please contact our tech-If there are any queries please contact our tech-If there are any queries please contact our tech-
nical customer service.nical customer service.nical customer service.
The stove must not be modified, except withThe stove must not be modified, except withThe stove must not be modified, except with
original stove components, provided and testedoriginal stove components, provided and testedoriginal stove components, provided and tested
by us or by work performed by our service tech-by us or by work performed by our service tech-by us or by work performed by our service tech-
nicians.nicians.nicians.
CAUTION: The chimney may have become ob-CAUTION: The chimney may have become ob-CAUTION: The chimney may have become ob-
structed when the stove is heated up againstructed when the stove is heated up againstructed when the stove is heated up again
after it has been out of use for an extendedafter it has been out of use for an extendedafter it has been out of use for an extended
period of time. Before re-starting the stove,period of time. Before re-starting the stove,period of time. Before re-starting the stove,
have the chimney inspected by a specialisthave the chimney inspected by a specialisthave the chimney inspected by a specialist
(chimney sweep).(chimney sweep).(chimney sweep).
With appliances equipped with heating insertWith appliances equipped with heating insertWith appliances equipped with heating insert
the proper dissipation of the heat output to thethe proper dissipation of the heat output to thethe proper dissipation of the heat output to the
hot water system must be ensured (radiator /hot water system must be ensured (radiator /hot water system must be ensured (radiator /
reservoir).reservoir).reservoir).

Page 5
3.3.3.
Transport / Unpacking / InspectionTransport / Unpacking / InspectionTransport / Unpacking / Inspection
The reinforcement bracket at the rear of the appliance must not be removed.The reinforcement bracket at the rear of the appliance must not be removed.The reinforcement bracket at the rear of the appliance must not be removed.
CAUTION: With levelling feet screwed out, move the stove carefully so as not toCAUTION: With levelling feet screwed out, move the stove carefully so as not toCAUTION: With levelling feet screwed out, move the stove carefully so as not to
damage the appliance or the floor covering.damage the appliance or the floor covering.damage the appliance or the floor covering.
The packaging of your appliances provides good protection against damage in
transit. Nevertheless, damage to the appliance and fittings cannot be entirely
excluded.
Therefore carefully check the appliance for completeness and possible damage
in transit after unpacking.
Transport securing devices
Prior to lifting the stove from the pallet used for transporting, carry out the
following steps:
1. Remove the fuel drawer.
2. Remove the 4 transport-securing screws. (Figure 1)
Remove the front reinforcement bracket (Figure 2) only after the appliance is
in its final location and after adjusting the height of the stove by means of the
levelling feet (ensure the appliance is level and will not rock).
Transport options
Transport on pallet:
Transport the appliance on the pallet to the installation site. Remove fuel
drawer and hotplate. Remove transport securing safety devices and lift the
appliance from the pallet.
Transport with a trolley:
Transporting sideways on a trolley is possible on the firebox side (Figure 3).
For this, remove the fuel drawer, hotplate and transport securing devices and
transport the appliance to the installation site using the trolley.
Transport by means of carrying straps (included in the delivery):
Remove the fuel drawer, hotplate and transport securing devices; hook the four
carrying straps into the stove base (Figure 4). Insert the support tubes (to be
provided by the customer) through the loops of the carrying straps and trans-
port the appliance to the installation site.
Figure 1
Figure 2
Figure 4
Figure 3
Only install genuine spare parts provided by your local specialist dealer.
Wearing parts (e.g. seals), components exposed to high thermal stress (fireclay,
cast-iron parts) or broken stove parts should be replaced or exchanged as soon
as possible.
Correct procedure in the event of chimney fires:
Correct procedure in the event of chimney fires:
If the fireplace, connecting duct and chimney are not regularly cleaned or if
unsuitable fuels are burned, the deposits may ignite, causing a chimney fire.
Keep the stove doors closed and turn the air regulators to position „0“. Move
away combustible parts from the chimney. UNDER NO CIRCUMSTANCES should
you attempt to extinguish the chimney fire by applying water. The resulting
sudden steam pressure is so high that the chimney could burst.
Call the fire brigade via the emergency phoneCall the fire brigade via the emergency phoneCall the fire brigade via the emergency phone
number.number.number.
Report visible faults to the supplier immediately.Report visible faults to the supplier immediately.Report visible faults to the supplier immediately.
Later claims for damages cannot be entertained.Later claims for damages cannot be entertained.Later claims for damages cannot be entertained.
Installing the appliance
1. Adjust stove height and if necessary stove frame overhang and the recess of
the stove base (see adjustment on page 7).
2. Any work required connecting the flue pipe, the heating system and if ne-
cessary the combustion air supply requires a specialist following the instruc-
tions of the operating manual.
3. Carefully place the stove right up against the wall.
4. Remove the front reinforcement bracket (Figure 2).
4 x
4 x

Page 6
4.4.4.
Safety instructionsSafety instructionsSafety instructions
5.5.5.
Description of the appliance / AdjustmentDescription of the appliance / AdjustmentDescription of the appliance / Adjustment
During installation and operation
• When installing the appliance, follow each of the instructions of the opera-
ting manual.
• Pay attention to the safety gaps when installing the appliance.
• Check the flue pipe connection for leakages.
• Check the appliance for damage (e.g. glass items).
• Make sure that you never add more firewood than required for the rated
heating output.
• When adding more firewood, open the door slowly and first allow the flue
gas to escape up the chimney. By doing this you prevent the flue gas from
entering the room.
• Do not obstruct the appliance during heating as this could lead to an explo-
sion.
Cooking surface
• Very hot fat and oil can ignite spontaneously; prepare food with fat and oil
such as potato chips only under supervision. Never use water on burning
fat and oil. Put the lid on and remove the pot from the hot cooking surface.
• Do not place combustible or ignitable objects on the cooking surface which
could constitute a danger when the appliance is started.
Oven
• There is a risk of burning when working with the hot oven. Use oven cloths,
heatproof gloves or similar.
• Do not store items in the oven that could be hazardous when the appliance
is started.
• Take care when opening the oven door. Do not bend over the opened oven
door immediately. A rush of hot air or steam will escape through the open
door.
• Always fully close the oven door when preparing food inside the oven.
Combustion chamber, firebox
Thanks to the proven JETIFIRE-system and separately controlled primary air
and secondary air, the combustion chamber meets the stringent Austrian regu-
lations established in the “Agreement between Federation and the Provinces
according to Art. 15a B-VG (Federal Constitution Act) concerning the saving of
energy”, the European standard EN 12815, the Austrian standard ÖNORM M
7550, the German industrial standards DIN 18882, DIN Plus, BIMSCH, as well as
the special regulations concerning efficiency and pollutant emission applicable
in Regensburg and Stuttgart (Germany).
Oven
All ovens are equipped with baking tray and grid, the baking tray support rails
have 4 different heights. The oven interior is fully enamelled and therefore easy
to clean (cleaning instructions on pages 19-20). After cleaning the oven, leave
the oven door open for a few minutes to air it.
Preheat the oven for roasting and baking to achieve an even temperature dis-
tribution.
A lively fire is necessary to maintain an oven temperature of approximately
250ºC. Dry beech wood is very suitable for this purpose.
Oven thermometer
The thermometer in the viewing glass of the oven door has a display range
of 20 – 400ºC. The temperature markings are reference values for baking and
roasting and may differ slightly from case to case.
CAUTION! CHILDREN PLAYING!CAUTION! CHILDREN PLAYING!CAUTION! CHILDREN PLAYING!
Bear in mind that certain components of theBear in mind that certain components of theBear in mind that certain components of the
appliance (handles, filling door, flue pipe,appliance (handles, filling door, flue pipe,appliance (handles, filling door, flue pipe,
etc.) become very hot when it is in operationetc.) become very hot when it is in operationetc.) become very hot when it is in operation
and therefore represent a burn hazard. Makeand therefore represent a burn hazard. Makeand therefore represent a burn hazard. Make
sure that children are never in the immediatesure that children are never in the immediatesure that children are never in the immediate
vicinity of the appliance when it is in use.vicinity of the appliance when it is in use.vicinity of the appliance when it is in use.
Burn hazard!Burn hazard!Burn hazard!
CAUTION! Depending on the type of operation,CAUTION! Depending on the type of operation,CAUTION! Depending on the type of operation,
the temperature in the oven can reach up tothe temperature in the oven can reach up tothe temperature in the oven can reach up to
400°C.400°C.400°C.
attachment
Figure 5
Figure 6

Page 7
Cooking surface
Your stove is equipped with a polished steel cooking surface.
Stove frame (adjustable in the stove type CLASSIC)
With the stove type CLASSIC the stove frame is adjustable in its fitting to the
appliance. This means you can have the stove frame flush with the working top
as well as the appliance front flush with the kitchen front when installing the
appliance in a fitted kitchen. Maximum overhang 3 cm.
ADJUSTMENT OF THE STOVE FRAME
With CLASSIC series, the stove frame is adjustable in its fitting on the appli-
ance. This means that you can install the appliance in a fitted kitchen both with
the stove frame flush with the working top and the appliance front flush with
the kitchen front. Maximum overhang 3 cm.
Pull out operating handles for grate riddling and the start-up flap.
Slacken the Allen screws of the operating handles (bottom) slightly and un-
screw to reach the required stove frame position (Figure 5).
Example:
Stove frame overhang = 2 cm unscrew the operating handles 2 cm
If necessary move the headless screw of the operating handles to the se-
cond fixing point.
Tighten the Allen screws of the operating handles. Ensure that the start-up
flap closes fully when the operating handles are pushed in.
Remove cooking plate(s) and slacken stove frame mounting screws (12 pi-
eces) (Figure 6)
Correctly position stove frame, retighten stove frame mounting screws
(12 pieces)
Replace cooking plate(s).
Base recess
With the design CLASSIC the base panels are adjustable in their fitting on the
appliance. This means the recess of the stove base can be adjusted so that it
matches the kitchen plinth when installing the appliance in a fitted kitchen.
Open the ash door panel and slacken the mounting screw of the base panel
(Figure 7), adjust to the required stove recess position ( 5 – 6.5 cm) and
retighten the screws.
Remove the ash drawer, loosen the panel fixing screws (Figure 8), adjust to
the required base recess position and retighten the screws.
Pull out the fuel drawer, loosen the mounting screws of the panel (Figure 9),
adjust to the required base recess position and retighten screws.
Appliance height
The 6 levelling feet (can be adjusted with the supplied adjustable wrench) allow
compensation of irregularities in the floor and adjustment to other appliances
or kitchen attachments.
Adjusting rear flue connection
The flexible rear flue can be adjusted from +/- 4.5 cm vertically to +/- 1.25 cm
horizontally. With stoves without oven or stoves equipped with a through-wall
heating, a flexible flue is not possible.
Figure 7
Figure 8
Figure 9
4 x
4 x
64*
+4,5
+ / - 1,25
-4,5
3 x
180°
2
1
1.
2.
3.
3 x
*with a stove height of 85cm
Delivery
status
Turn adjustment
plate

Page 8
14 Ash door panel
15 Base panel of ash drawer
16 Base panel of fuel drawer
17 Heat exchanger finishing panel
18 Drawer panel
19 Cleaning door
20 Side wall
21 Oven viewing window
22 Oven door panel
23 Oven door handle, stainless steel
24 Operating handle start-up flap
25 Duct plate
26 JETFIRE flame convergence plate
27 Protective plate (extra charge for glass)
1 Stove frame stainless steel
2a Cooking surface (Ceran, extra charge)
2b Cooking plate oven (standard)
2c Cooking plate combustion chamber (standard)
3 Hand rail set stainless steel
5 Sidewall
6 Control knob heating/cooking operation
7 Thermometer
8 Fire door panel
9 Fire door handle stainless steel
10 Fire door viewing window (extra charge)
11 Control knob for primary air
12 Regulator panel
13 Base side panel
28 Cast-iron grate combustion chamber
29 Combustion air slider secondary air
30 Grate riddling / grate adjustment
31 Double ball catch
32 Ash drawer
33 Fuel drawer slide
34 Cleaning cover
35 Sealing cord cleaning cover
36 Oven thermometer
37 Oven with oven frame
38 Baking tray
39 Grid
40 Oven side rails
41 Start-up flap
42 Changeover damper heating / cooking operation
1 2a 3
24
23
22
21
19
18
20
15 141617
7
6
5
10
9
8
11
12
13
42
39
40
38
37
41
36
35
34
33
25
26
2c
27
29
30
28
31
32
2b

Page 9
6.6.6.
Installing the applianceInstalling the applianceInstalling the appliance
Load-bearing capacity of the floor
Prior to installing the appliance, make sure that the substructure of the floor
is suitable for the weight of the appliance. Ensure a level and vibration-free
positioning of the appliance.
Floor pad as a protection against flying sparks
With combustible floors (timber flooring, synthetic materials, fitted carpet, etc.),
the use of a floor pad made of steel, safety glass, tiles or similar non-combus-
tible materials is strongly recommended
According to fire protection laws, the following minimum clearances from the
combustion chamber opening must be maintained: 50 cm to the front, and 30
cm each to the left and to the right.
Safety clearances
Maintain sufficient safety clearance to combustible items (wooden panelling,
furniture, curtains, etc.) around the stove. The walls in the immediate vicinity of
the stove must be fireproof over the full height of the walls and over a width of
at least 50 cm to either side and to the front beyond the fireplace (Figure 10).
The safety clearance from items to be protected (e.g. combustible walls, walls
with combustible components, tall kitchen cupboards and load-bearing walls
made of reinforced concrete) is at least 20 cm (Figure 11).
When installed next to combustible materials or in a fitted kitchen or next to an
electric cooker or any other appliance, a fire protection unit (fitted as standard
or as an addition) must be provided (Figure 12).
In this case the maximum height of the adjacent fixtures is the stove height. Fix-
tures exceeding the height of the stove must be at a distance of at least 20 cm.
Overhead kitchen cabinets
For stoves with a steel cooking plate it is not permissible to install overhead cabinets
above the stove because the hotplate can be opened (cooking opening cover).
For stoves with a glass ceramic cooking surface, the distance must be at least 75
cm and there must be adequate rear ventilation of the overhead cabinets to avoid
heat being trapped.
Safety clearances flue gas pipe
When installing the flue gas pipe, adhere to the following minimum distances from
combustible building materials:
• clearance to wall 20 cm
• clearance to ceiling 40 cm.
Figure 10
Figure 11
Figure 12
With fire protection unit „retrofitted“:
Gap in kitchen plinth to allow air circulation
> 20 fire protection unit
> 20
> 20 > 20
> 20
We strongly recommend that the connection andWe strongly recommend that the connection andWe strongly recommend that the connection and
the installation work (in the case of self-installati-the installation work (in the case of self-installati-the installation work (in the case of self-installati-
on the final inspection and approval) are alwayson the final inspection and approval) are alwayson the final inspection and approval) are always
carried out by a certified specialist.carried out by a certified specialist.carried out by a certified specialist.
Seek the advice of the local qualified chimneySeek the advice of the local qualified chimneySeek the advice of the local qualified chimney
sweep before installing the appliance.sweep before installing the appliance.sweep before installing the appliance.
When installing the appliance, the technical regu-When installing the appliance, the technical regu-When installing the appliance, the technical regu-
lations applicable at the installation site as well aslations applicable at the installation site as well aslations applicable at the installation site as well as
country-specific regulations such as the applicablecountry-specific regulations such as the applicablecountry-specific regulations such as the applicable
building regulations, local fire protection laws and/building regulations, local fire protection laws and/building regulations, local fire protection laws and/
or additional regional regulations must be obser-or additional regional regulations must be obser-or additional regional regulations must be obser-
ved.ved.ved.
The LOHBERGER fire protection units type VBS are only tested in conjunction withThe LOHBERGER fire protection units type VBS are only tested in conjunction withThe LOHBERGER fire protection units type VBS are only tested in conjunction with
LOHBERGER stoves of the series VARIOLINE (stoves type AC.., LM.., LC.., LCP...).LOHBERGER stoves of the series VARIOLINE (stoves type AC.., LM.., LC.., LCP...).LOHBERGER stoves of the series VARIOLINE (stoves type AC.., LM.., LC.., LCP...).

Page 10
7.7.7.
Chimney connectionChimney connectionChimney connection
Schematic diagram flue gas connection (Figure 13)
Trouble-free and efficient operation is assured if the following conditions for an
optimum combustion are fulfilled:
 Adequate condition of the chimney: good thermal insulation, smooth inner
surface, no leakages
 Correct dimensioning of the chimney: cross section and effective height
must be calculated for the intended fuels and loads.
 Correct flue gas pipe connection: tight, no cross sectional constriction,
slightly rising towards the chimney, not projecting into the chimney.
 For shared-flue systems: maintain a minimum distance of 60 cm.
 Seal unused connection openings with cover lids.
 Keep sweeping and cleaning openings, usually located in the basement or
attic storeys, closed at all times. Check seals from time to time and renew if
necessary.
The chimney
• When installing the flue gas pipe adhere to the following minimum clearan-
ces from combustible building materials: clearance from wall 20 cm, clea-
rance from ceiling 40 cm.
• Design and condition to suit the regulations applicable at the place of ins-
tallation.
• Prior to connection, inspect for possible faults and defects.
• Effective chimney height of 5 m (from cooking plate to the chimney outlet).
If the height is less, the stove must be connected with a vertical flue gas
pipe of at least 1 m length. An effective chimney height of less than 4 m is
not advisable.
• Uniform, square or round internal cross section, insulated to prevent cooling.
• Chimneys made of pre-fabricated components are preferable.
• Assessment of the entire flue gas system according to DIN 4705 Parts 1 and
2, with shared-flue systems according to Part 3.
Connection stove - chimney
The flue pipe is the connection between the stove and the chimney. When ins-
talling the flue, please note the following instructions:
• Make sure that the connecting piece can be cleaned (cleaning opening, from
the stove-side, etc.).
• The diameter of the flue pipe must not decrease towards the chimney.
• The flue pipe must not project into the chimney.
• Vertically positioned flue pipes must not exceed a length of 125 cm if they
are not insulated.
• Horizontal pipe sections must not exceed a length of 100 cm.
• The flue pipe must not descend towards the chimney, but must incline slight-
ly upward.
• The connection between the stove and the chimney must be strong and leak-
proof. In particular the connection to the masonry of the chimney must be
durable and tight.
The necessary discharge pressure (“Chimney draught”)
The negative pressure prevailing in your chimney, measured in Pascal (“Pa”) is
a measure of the efficiency of your chimney. The discharge pressure required
for your stove is shown in the table “Technical data” on page 26 and on the
nameplate of the stove.
With new chimneys you can trust the details (calculations) of the manufacturer;
with older chimneys seek the advice of your chimney sweep.
• Insufficient discharge pressure would result in incomplete combustion and
consequently in increased formation of soot and tar in the stove and in the
chimney.
• Excessive discharge pressure on the other hand would accelerate combus-
tion, lead to high flue gas temperatures (causing damage to the appliance)
and greatly increase fuel consumption.
Figure 13

Page 11
8.8.8.
Combustion airCombustion airCombustion air
Outdoor air supply for combustion (optional equipment)
Dimensions for fitting (Figure 14)
Examples of possible connections
The appliance is dependent on indoor air (open-flued appliance); that means
the air required for combustion is drawn from the room where the appliance is
located. Therefore the room must be supplied with fresh air from the outside
through an air inlet. Provide an opening that is 10-15 cm in diameter in an exte-
rior wall in the room where the appliance is located. Install a protective grating
on the outside of the air inlet. In particularly exposed locations it is advisable
to provide protection against wind and rain.
If it is not possible to provide an air inlet to the outside from the room where
the appliance is located, the opening can be in an adjoining room. In this case
the adjoining room must have a permanent connection to the room where the
appliance is installed via a ventilation grid. If there are additional heating ap-
pliances in the same room, make sure that the air inlets can supply sufficient
air for combustion for the operation of all appliances.
Appliance Lateral clearance Clearance to floor
AC 80 (F2+B2) 42,5 * 15,5 **
*
For appliances with fire protection please note the increased dimension » +5 cm / +
7.5 cm (closed)
** Stove height 85 cm.
Figure 14
Figure 15
Figure 16
Figure 17
Air supply for combustion via pipe line through a basement room (Figure 15)
The combustion air is preheated with this connection option, which is favo-
rable to a clean combustion. The routing in the basement room is easy to
make.
Air supply for combustion directly from outdoor (Figure 16)
In a air supply directly through an outside wall, the combustion air is only
slightly preheated, which is unfavorable to a clean combustion. There is also
the danger of condensation!
Air supply for combustion from above (Figure 17)
An air supply from above may only be with tested chimney systems, a chimney
calculation is mandatory!
Negative pressures in the room where the appli-Negative pressures in the room where the appli-Negative pressures in the room where the appli-
ance is located (e.g. through ventilation systems,ance is located (e.g. through ventilation systems,ance is located (e.g. through ventilation systems,
extractor hoods, etc.) may impair the functioningextractor hoods, etc.) may impair the functioningextractor hoods, etc.) may impair the functioning
of the fireplace and its safety system and areof the fireplace and its safety system and areof the fireplace and its safety system and are
therefore not permissible.therefore not permissible.therefore not permissible.
Operate extractor hoods only with re-circulatedOperate extractor hoods only with re-circulatedOperate extractor hoods only with re-circulated
air operation.air operation.air operation.
With ducted extractor hoods, anWith ducted extractor hoods, anWith ducted extractor hoods, an
adequate supply of air must be ensured by me-adequate supply of air must be ensured by me-adequate supply of air must be ensured by me-
ans of separate safety equipment (e.g. contactans of separate safety equipment (e.g. contactans of separate safety equipment (e.g. contact
switches on the windows, negative-pressureswitches on the windows, negative-pressureswitches on the windows, negative-pressure
monitoring).monitoring).monitoring).
The local qualified chimney sweep or your venti-The local qualified chimney sweep or your venti-The local qualified chimney sweep or your venti-
lation installer will be happy to provide informati-lation installer will be happy to provide informati-lation installer will be happy to provide informati-
on about the applicable technical guidelines andon about the applicable technical guidelines andon about the applicable technical guidelines and
requirements for the use of fireplaces in combi-requirements for the use of fireplaces in combi-requirements for the use of fireplaces in combi-
nation with systems for ventilation and extractornation with systems for ventilation and extractornation with systems for ventilation and extractor
hoods.hoods.hoods.
Even with an outdoor air supply for combustion the requirements for the operationEven with an outdoor air supply for combustion the requirements for the operationEven with an outdoor air supply for combustion the requirements for the operation
of an appliance independent of indoor air (room-sealed appliance) are not fulfilled.of an appliance independent of indoor air (room-sealed appliance) are not fulfilled.of an appliance independent of indoor air (room-sealed appliance) are not fulfilled.
As part of the final approval the local qualified chimney sweep must check theAs part of the final approval the local qualified chimney sweep must check theAs part of the final approval the local qualified chimney sweep must check the
entire system for an adequate supply of combustion air.entire system for an adequate supply of combustion air.entire system for an adequate supply of combustion air.
Please note!Please note!Please note!
•••
A prerequisite for the connection of fireplaces used in combination with do-A prerequisite for the connection of fireplaces used in combination with do-A prerequisite for the connection of fireplaces used in combination with do-
mestic ventilation systems is that the approval of the local qualified chimneymestic ventilation systems is that the approval of the local qualified chimneymestic ventilation systems is that the approval of the local qualified chimney
sweep is obtained.sweep is obtained.sweep is obtained.
•••
It is not permitted to install cut-off devices in the supply air duct (dampers, sli-It is not permitted to install cut-off devices in the supply air duct (dampers, sli-It is not permitted to install cut-off devices in the supply air duct (dampers, sli-
ders, etc.). To prevent air from permanently flowing through the appliance whenders, etc.). To prevent air from permanently flowing through the appliance whenders, etc.). To prevent air from permanently flowing through the appliance when
it is not in use, close the dampers in the appliance.it is not in use, close the dampers in the appliance.it is not in use, close the dampers in the appliance.
•••
Make sure that the outdoor air inlet is protected against blockage by means ofMake sure that the outdoor air inlet is protected against blockage by means ofMake sure that the outdoor air inlet is protected against blockage by means of
a protective grating. We recommend a mesh size of 10 mm.a protective grating. We recommend a mesh size of 10 mm.a protective grating. We recommend a mesh size of 10 mm.
•••
For the supply air duct to the combustion air connecting piece it is best to useFor the supply air duct to the combustion air connecting piece it is best to useFor the supply air duct to the combustion air connecting piece it is best to use
a non-combustible, flexible aluminium hose.a non-combustible, flexible aluminium hose.a non-combustible, flexible aluminium hose.
Max. length 4 m with 3 bends.Max. length 4 m with 3 bends.Max. length 4 m with 3 bends.
•••
The supply air duct must be insulated to avoid condensation and must beThe supply air duct must be insulated to avoid condensation and must beThe supply air duct must be insulated to avoid condensation and must be
protected against wind.protected against wind.protected against wind.
•••
The air duct must be at least 100 mm in diameter. If rectangular pipes are em-The air duct must be at least 100 mm in diameter. If rectangular pipes are em-The air duct must be at least 100 mm in diameter. If rectangular pipes are em-
ployed, an appropriate cross section must be maintained.ployed, an appropriate cross section must be maintained.ployed, an appropriate cross section must be maintained.
•••
According to the regulations for chimney sweeping and inspection ventilationAccording to the regulations for chimney sweeping and inspection ventilationAccording to the regulations for chimney sweeping and inspection ventilation
systems must be checked for blockages once a year by the local qualified chim-systems must be checked for blockages once a year by the local qualified chim-systems must be checked for blockages once a year by the local qualified chim-
ney sweep. To facilitate this, appropriate inspection doors should be provided.ney sweep. To facilitate this, appropriate inspection doors should be provided.ney sweep. To facilitate this, appropriate inspection doors should be provided.
Please consult your local qualified chimney sweep regarding this matter.Please consult your local qualified chimney sweep regarding this matter.Please consult your local qualified chimney sweep regarding this matter.
Ø 10
10
15,5 **
42,5*

Page 12
Installation to be provided by the customer
The boiler is suitable and permissible as a heat generating device for hot-water
heating systems with a flow temperature of up to 95° C and a maximum allo-
wable working pressure of 3 bar.
The appliance must be installed following the instructions of this operating ma-
nual and in conformance with the applicable national and European standards
as well as the regional regulations.
Further points to be observed:
• Heating room guidelines
• State building regulations
• Local building regulations
• Industrial regulations and local fire protection laws
• Environmental laws
• Regulations of the local power supply company.
Upon completion of the connection work a test run must be carried out du-
ring which all control and safety devices are adjusted and checked for correct
functioning.
Heat output to water
The heat requirement during operation must exceed 1.6 kW. If the demand or
heat supplied is lower, the built-in safety devices would be activated and/or the
appliance would be shut down.
Return flow temperature boost
Operating temperatures that are too low (flow and return flow temperatures
that are too low) will reduce the service life of the boiler significantly.
When the temperature is below the water dew point, water containing chemical
substances with various types of activity condenses on the boiler surface and
can accelerate corrosion. Temperatures below the dew point primarily occur
in low-temperature heating installations (return temperatures down to below
25°C), in installations without a mixer, in the case of extreme light-load opera-
tion during changes in season and in constant light-load operation caused by
a boiler that is dimensioned too large.
Therefore the return flow temperature must be at least 55°C at the return flow
connecting piece of the appliance. The ideal return flow temperature at the
boiler inlet is around 60°C. The return flow temperature boost (the pump for
the return flow temperature boost must be installed in the return flow) should
be mounted as near as possible to the boiler so that the mixing temperature
at the mixing valve corresponds to the return flow temperature at the boiler.
Temperature safety relief valve
The heat exchanger serves to protect the boiler from overheating when the
pump is stationary and must not be used to provide domestic hot water. The
safety mechanisms must still be accessible after the installation. The drain must
be visible for checking the temperature safety relief valve for proper functio-
ning, therefore use the drain funnel (Figure 19).
At least once a year the temperature safety relief valve must be checked for
correct operation. To do this, press the red cap against the valve and water
must flow into the drain funnel. Should the safety valve drip, the seal and valve
seat must be cleaned. The calcification state of the safety devices must also be
checked at least once a year.
Expansion tank
If the boiler hot-water circuit is not directly connected to a heating circuit with
integrated expansion tank, or if it can be disconnected from this circuit, a
separate expansion tank (type-approved) is required. The installation and the
calculation of the dimensions of the expansion tank must comply with DIN
EN12828 and DIN EN13831. The expansion tank must be installed in rooms that
are protected from frost. For further details (e.g. maximum operating tempera-
ture, etc.) refer to the information given by the manufacturer.
9.9.9.
Connection of the heating systemConnection of the heating systemConnection of the heating system
For connecting the heating system we re-For connecting the heating system we re-For connecting the heating system we re-
commend our “installation package” which iscommend our “installation package” which iscommend our “installation package” which is
available as optional equipment. This packageavailable as optional equipment. This packageavailable as optional equipment. This package
includes a return flow temperature boost, aincludes a return flow temperature boost, aincludes a return flow temperature boost, a
temperature safety relief valve, a circulatingtemperature safety relief valve, a circulatingtemperature safety relief valve, a circulating
pump as well as an automatic bleeding devicepump as well as an automatic bleeding devicepump as well as an automatic bleeding device
which are pre-installed at the rear of the appli-which are pre-installed at the rear of the appli-which are pre-installed at the rear of the appli-
ance (Figure 18).ance (Figure 18).ance (Figure 18).
Figure 18
Figure 19
Sensor for temperature safety
relief valve
Temperature safety relief valve
(Watts STS20)
Discharge
Supply
Drain funnel
Cleaning-T
Safety valve Check valve
Pressure reduction valve with gauge
Cold water pipe
DETAIL A
MAßSTAB 2 : 5
Automatic air bleed device
Circulating pump Return flow temperature boost
Caution: Direction of flow
Temperature safety
relief valve
The connection to the heating appliance as wellThe connection to the heating appliance as wellThe connection to the heating appliance as well
as the start-up may only be performed by a certi-as the start-up may only be performed by a certi-as the start-up may only be performed by a certi-
fied HVAC installer.fied HVAC installer.fied HVAC installer.
Install a drain valve in the lowest part of the wa-Install a drain valve in the lowest part of the wa-Install a drain valve in the lowest part of the wa-
ter circuit.ter circuit.ter circuit.
The inside width of the inlet and outlet safetyThe inside width of the inlet and outlet safetyThe inside width of the inlet and outlet safety
valves of the heat exchanger must not be lessvalves of the heat exchanger must not be lessvalves of the heat exchanger must not be less
than the nominal width of its connection. It mustthan the nominal width of its connection. It mustthan the nominal width of its connection. It must
not be possible to close off the inlet pipe manu-not be possible to close off the inlet pipe manu-not be possible to close off the inlet pipe manu-
ally and the outlet pipe must be free from obs-ally and the outlet pipe must be free from obs-ally and the outlet pipe must be free from obs-
tructions.tructions.tructions.
Please observe the DIN EN 12828 standards whenPlease observe the DIN EN 12828 standards whenPlease observe the DIN EN 12828 standards when
connecting the temperature safety relief valve.connecting the temperature safety relief valve.connecting the temperature safety relief valve.

Page 13
Safety valve
To prevent excess pressure, a pressure-relief safety valve must be installed. The
open end of the blow-off pipe must be visible, therefore use a drain funnel.
Automatic air bleed
At the connecting bend of the boiler flow pipe an automatic air bleed unit must
be provided to ensure proper bleeding of the boiler and the heating system.
Example of connections
The following shows schematic diagrams of a heating system. Isolating devices,
air bleed units and safety devices are not included. They are to be understood
as non-binding examples and are not a substitute for accurate planning that
takes account of the customer‘s requirements and hydraulic and safety requi-
rements.
Connection with LOHBERGER installation package (optional equipment)
Connection without LOHBERGER installation package
1
Return flow temperature boost
to be provided by the customer
Explanation of symbolsExplanation of symbolsExplanation of symbols
:::
1 Installation package1 Installation package1 Installation package
Integrated return flow temperature boostIntegrated return flow temperature boostIntegrated return flow temperature boost
Circulating pumpCirculating pumpCirculating pump
Automatic air bleed unitAutomatic air bleed unitAutomatic air bleed unit
Temperature safety relief valveTemperature safety relief valveTemperature safety relief valve
2 Heating circuit2 Heating circuit2 Heating circuit
3 Additional heating circuit or boiler load circuit,3 Additional heating circuit or boiler load circuit,3 Additional heating circuit or boiler load circuit,
if necessaryif necessaryif necessary
Y1 Three-way thermal valveY1 Three-way thermal valveY1 Three-way thermal valve
Y2 Three-way mixerY2 Three-way mixerY2 Three-way mixer
Y3 Check valveY3 Check valveY3 Check valve
M1 Circulating pump for filling the reservoirM1 Circulating pump for filling the reservoirM1 Circulating pump for filling the reservoir
M2 Heating circuit pumpM2 Heating circuit pumpM2 Heating circuit pump
ADG Expansion tankADG Expansion tankADG Expansion tank

Page 14
10.10.10.
Operating the stoveOperating the stoveOperating the stove
Start-up flap
To facilitate initial heating, all LOHBERGER stoves are equipped with a start-up
flap. Opening the start-up flap provides a direct route from the firebox chamber
to the flue pipe. The flue gases then need not take the “long” route through
the oven, but enter the flue pipe while still hot, rapidly establishing a flue drau-
ght. Once there is sufficient draught in the flue and the initial heating phase is
completed, close the start-up flap again.
It is incorporated in the hand rail on the side opposite to the combustion cham-
ber. Pulled out is open; pushed in is closed (Figure 20).
Caution: The start-up flap must only remain open during the initial heating
phase. If the start-up-flap remains open when heating, this will cause the stove
to overheat and damage stove components. An open start-up flap will also
result in increased fuel consumption.
Air control
The AquaTherm appliance is fitted with an automatic output controller. This
device serves to “restrict” the supply of combustion air; but this has only a
limited effect on the output. It is definitely not suitable for compensating an
excess of fuel. A certain amount of fuel requires a certain amount of oxygen for
optimum combustion. If the wood is supplied with less air than is required for
clean and efficient combustion, less energy is generated in the appliance (pro-
tecting the appliance to a great extent from overheating) – the unused “wood
gas”, however, escapes through the flue.
The result: low efficiency and high environmental load.
Remedy: load the stove only up to the recommended fuel level.
Primary air control
The supply of the primary air required for combustion is controlled with the
rotary knob below the firebox door (Figure 21). This determines the rate of
burning and therefore the heat output of the stove.
In position “0” the controller is closed, no combustion air is supplied. In posi-
tion “1” minimum air supply is provided; select this position for slow-burning
operation. Turning the rotary knob to position “6” means maximum air supply,
necessary especially during the heating-up phase.
Air settings see Table on page 18
Secondary air control
The supply of secondary air (combustion air flowing over the fuel from the top)
produces combustion that matches the fuel being used and keeps down the
pollutant emissions. The secondary air flows through openings in the rear wall
of the combustion chamber as well as from below and at the top along the
combustion chamber door (along the viewing window, if present) over the fuel
into the combustion chamber.
The secondary air is controlled with the secondary air slider which is visible
in the lower area after opening the firebox door (Figure 22). Moving the slider
towards the outer wall of the appliance reduces the incoming secondary air
flow; moving towards the oven increases it.
Air settings see Table page 18
Figure 20
Figure 21
Figure 22
A plentiful supply of air from below means a lot of combustible wood gas (canA plentiful supply of air from below means a lot of combustible wood gas (canA plentiful supply of air from below means a lot of combustible wood gas (can
be adjusted by means of the primary air control). Using the pre-heated se-be adjusted by means of the primary air control). Using the pre-heated se-be adjusted by means of the primary air control). Using the pre-heated se-
condary air (JETcondary air (JETcondary air (JET
III
FIREFIREFIRE
combustion technology) this wood gas is burned cleanlycombustion technology) this wood gas is burned cleanlycombustion technology) this wood gas is burned cleanly
and efficiently at approx. 950°Cand efficiently at approx. 950°Cand efficiently at approx. 950°C
open closed
Max. Min.
Control knob for
primary air

Page 15
Grate riddling
To remove ash from the grate use the grate crank handle from the ash drawer
(Figure 23). To do this, push the grate crank handle onto the upper square spi-
got and turn as required. However, if the air slits of the grate are very clogged
by slag, crusts or other combustion residues, completely remove the grate and
clean it.
Adjustment of the grate
Thanks to the lifting grate the filling height can be adjusted as desired. The
lifting grate is adjusted by means of the grate crank handle (Figure 24). The
crank is pushed onto the lower square spigot above the ash drawer. Turning it
clockwise moves the grate upwards. Turning it anti-clockwise moves the grate
downwards.
Winter mode / Summer mode
WINTER MODE (Figure 24)
With the grate at the lowest position (full firing) maximum heat is supplied to
the heating system, the output is sufficient for cooking, the output for baking
is lower.
SUMMER MODE (Figure 25)
The top position of the grate (shallow firing) is especially suitable for cooking
and baking with a reduced supply of heat to the heating system.
Changing between boiler and cooking operation
The control knob above the boiler thermometer is used to select boiler operati-
on or cooking operation. To do this, turn the knob to the symbol for the desired
operation (Figure 26).
BOILER OPERATION (Figure 27):
With this operating mode maximum heat is supplied to the heating system. The
heating gases are taken through a tube heat exchanger, and the radiated losses
to the room where the stove is installed (via the cooking surface or the oven)
and consequently the heat output to the room are reduced.
COOKING OPERATION (Figure 28):
For cooking and baking the heating gases are led to the cooking surface and
around the oven. The increased radiating surface area increases the heat out-
put to the room where the appliance is located. The boiler output is reduced
through exclusion of the tube heat exchanger, but not entirely stopped.
Figure 26
Figure 27
Figure 28
Figure 24
Figure 25
Figure 23
Grate crank
handle
Even in SUMMER MODE make sure that the heat output to water is sufficientlyEven in SUMMER MODE make sure that the heat output to water is sufficientlyEven in SUMMER MODE make sure that the heat output to water is sufficiently
dissipated as the heat output to the water circuit is reduced but not stoppeddissipated as the heat output to the water circuit is reduced but not stoppeddissipated as the heat output to the water circuit is reduced but not stopped
completely.completely.completely.
Even in the mode COOKING OPERATION make sure that the heat output toEven in the mode COOKING OPERATION make sure that the heat output toEven in the mode COOKING OPERATION make sure that the heat output to
water is sufficiently dissipated as the heat output to the water circuit is redu-water is sufficiently dissipated as the heat output to the water circuit is redu-water is sufficiently dissipated as the heat output to the water circuit is redu-
ced but not stopped completely.ced but not stopped completely.ced but not stopped completely.

Page 16
Prerequisites for efficient combustion:
• sufficient amount of combustible material
• oxidising agent, mostly oxygen
• enough heat to reach the ignition temperature or to maintain the minimum
temperature required for combustion
• the correct proportion of the combustible material to ambient air or to the
reactive gas
The combustion process
The combustion process takes place in three stages:
1. Drying stage
In this stage all the moisture still in the wood is evaporated. This occurs at
temperatures of approx. 100°C. During pre-ignition, the wood must be supplied
with heat (using small pieces of firewood). When it dries, the firewood shrinks
until cracks are formed which accelerate the drying process.
2. Degasification stage
After the drying process, with temperatures rising from 100° to approx. 300°C,
the degasification of the wood starts. High-energy, combustible gases, consis-
ting of various chemical components, are released (hydrocarbons). The burn-off
of these volatile components, which account for about 80 % of the wood, is
recognisable from the long yellow flames that shoot up from the wood. The real
combustion process begins with the ignition of the gases that are produced
at about 225°C (ignition temperature) and with the release of heat. For this to
happen, enough oxygen must also be supplied. The final stage of the combus-
tion is reached at about 300°C. Now the greatest amount of heat is released,
with flame temperatures of up to 1100°C.
3. Burn-out stage
After the volatile components have been burnt-off, the charcoal begins to burn
and is degasified at temperatures of about 500 to 800°C without forming soot.
This process can be recognised by the short, translucent small flames. All three
stages can occur at the same time from the inside to the outside of a piece of
wood.
Clean combustion
The first prerequisite for keeping pollutant emissions as low as possible is that only
dry wood is used.
The heating-up phase, which produces significant quantities of decomposition pro-
ducts, must be completed as fast as possible by using small pieces of kindling wood
in order to reach the high temperatures quickly.
Reducing the air supply during the degasification stage has a detrimental effect as
the wood degasification continues even without further supply of air and without
flames (smouldering). As a result large amounts of the substance of the wood can
be expelled without generating heat and are released into the environment without
having been being burnt-off or deposits such as tar and soot are formed on the walls
of the combustion chamber and in the flue gas pipes.
Even during the burn-off phase the air supply must not be restricted completely as
this would create the hazard of carbon monoxide fumes.
When continuing the heating process, make sure that not too much wood is added.
The amount of wood should always match the heat requirements.
JETIFIRE - FLAME CONVERGENCE PLATE
The JETIFIRE Flame convergence plate, which serves as a cover for the com-
bustion chamber (Figure 30), in conjunction with the pre-heated secondary air
supply through the firebox door, results in a higher combustion temperature
and thus in a less polluting and more effective combustion.
The flame convergence plate, like the stove itself, should be cleaned of com-
bustion residues from time to time. Make sure that the flame convergence plate
is replaced in the correct position.
11.11.11.
CombustionCombustionCombustion
combustible
material
heat
combustible
heat
oxygen
correct proportion
fi re
Figure 29
Figure 30
JETFIRE Flame
convergence plate
Secondary air
Figure 31
Figure 32

Page 17
Suitable fuels
FIREWOOD (LOGS)
Firewood (Figure 31) should have a moisture content of approx. 20 % of the
dry weight, a length of 1/3 m and should be split into small pieces. This way,
the firewood quickly catches fire and produces a higher heat output than the
same volume of large logs. Spruce wood, fir wood or alder wood should be
allowed to dry out for at least 2 years, hardwood as long as 3 years (under a
roofed shelter).
The effect of the water content in wood on the calorific value is shown in Table
1:
LIGNITE BRIQUETTES
In addition to wood, lignite briquettes (Figure 32) can also be burned. Ligni-
te briquettes have the following advantages: high calorific value, long-lasting
heat, a consistent quality, readily available at DIY-stores, fuel dealers etc. and
the 10-25 kg bundles are easy to transport and store.
Calorific value of lignite briquettes: 5,83 kWh/ kg
Unsuitable fuels
Moist wood, bark waste, sawdust, fine wood chips, brushwood, wood-wool,
wood shavings. Use paper only in small amounts to kindle a fire. The burning
of such fuels results in significant pollutant emissions, large amounts of ash,
and the heat output is comparatively low.
Prohibited fuels
Surface-treated wood (veneered, painted, impregnated, etc.), particle board,
all types of household waste (packaging waste), plastic materials, newspapers,
rubber, leather, textiles, etc.
Burning these materials is harmful to the environment and is therefore prohibi-
ted by law. Furthermore, damage to the appliance and the chimney can occur.
Burning coal products other than lignite (brown coal) is also forbidden. The
appliance has not been tested for use with these fuels; therefore damage to the
appliance cannot be ruled out and is not covered by warranty.
12.12.12.
FuelsFuelsFuels
13.13.13.
Start-upStart-upStart-up
Storage of wood moisture content
%
calorific
value
kWh/kg
green wood 50 ~2,3
stored for one winter 40 ~2,7
stored for one summer 18-25 ~3,4
air dried 15-20 ~4,2
After completion of the assembly and connecting work and prior to the first
start-up, a few actions are still required:
• Steel cooking plate: ensure a 2 mm gap all round between the plate and
the stove frame to prevent discoloration of the stainless stove frame when
heating.
• Open the firebox door and the ash door, pull out the ash drawer and take
out the multi-purpose wrench.
• Wipe off the corrosion protection applied to the steel cooking plate (see
page 21)
• Before each start-up, make sure that the appliance is ready for use (water
level, water pressure, temperature, controls, safety devices etc.)
After you have familiarised yourself with the operating procedures for the stove,
the first start-up can begin.
Heating up
• Open the start-up flap, turn the knob for the primary air to position 6 and
fully open the slider for the secondary air.
• Open the firebox door
• Turn the operation mode control to Cooking operation
• Put 2 small pieces of firewood onto the grate
• Place a piece of starter between the pieces of firewood and add more
firewood on top
• Close the firebox door, open the ash door a little bit and allow wood to
develop a lively fire.
How to heat with brown coal (lignite) briquet-How to heat with brown coal (lignite) briquet-How to heat with brown coal (lignite) briquet-
How to heat with brown coal (lignite) briquet-How to heat with brown coal (lignite) briquet-How to heat with brown coal (lignite) briquet-
How to heat with brown coal (lignite) briquet-How to heat with brown coal (lignite) briquet-How to heat with brown coal (lignite) briquet-
tes:tes:tes:
The fuel is best ignited with a high combustionThe fuel is best ignited with a high combustionThe fuel is best ignited with a high combustion
temperature. To facilitate this, place a suitabletemperature. To facilitate this, place a suitabletemperature. To facilitate this, place a suitable
number of fire starter cubes, or paper or kindlingnumber of fire starter cubes, or paper or kindlingnumber of fire starter cubes, or paper or kindling
wood onto the grate in the firebox. Add two towood onto the grate in the firebox. Add two towood onto the grate in the firebox. Add two to
three small pieces of firewood or two to threethree small pieces of firewood or two to threethree small pieces of firewood or two to three
briquettes and light the fire. Close the fireboxbriquettes and light the fire. Close the fireboxbriquettes and light the fire. Close the firebox
door; turn the air regulator to “maximum” positi-door; turn the air regulator to “maximum” positi-door; turn the air regulator to “maximum” positi-
on. As soon as the wood and the briquettes areon. As soon as the wood and the briquettes areon. As soon as the wood and the briquettes are
burning, adjust the air supply to suit your hea-burning, adjust the air supply to suit your hea-burning, adjust the air supply to suit your hea-
ting requirements. More lignite briquettes canting requirements. More lignite briquettes canting requirements. More lignite briquettes can
be placed onto the glowing embers as requiredbe placed onto the glowing embers as requiredbe placed onto the glowing embers as required
once the flames have died down.once the flames have died down.once the flames have died down.
Failure to observe these instructions will invalidate any warrantyFailure to observe these instructions will invalidate any warrantyFailure to observe these instructions will invalidate any warranty
Close the start-up flap and the ash door after ap-Close the start-up flap and the ash door after ap-Close the start-up flap and the ash door after ap-
proximately 15 minutes.proximately 15 minutes.proximately 15 minutes.
Figure 31
Figure 32
Table 1

Page 18
Table 2
Table 3
Table 2
Type of fuel /
firing mode
Rated heat output (~20 Pascal)
Primary air Secondary air
Beech wood / shal-
low firing 6max.
Beech wood / full
firing 6max.
Lignite briquettes /
full firing 6min.
Table 3
Type of fuel /
Mode of firing Adding of fuel Burning time
Beech wood /
shallow firing
approx. 2,3 kg
(2-3 pieces of
firewood)
approx. 60 min.
Beech wood /
full firing
approx. 3,8 kg
(4-5 pieces of
firewood)
approx. 60 min.
Lignite briquet-
tes /full firing approx. 5,6 kg approx. 120
min.
Adding Fuel
• Add more fuel according to the table (see air supply settings).
• Turn primary air supply for the required heat output.
• Adjust secondary air supply for the required type of fuel.
When adding fuel we recommend:
1. short intervals (every 30-50 minutes)
2. small pieces of firewood
Air supply settings
Table 2 shows the recommended settings for the air supply (after the opera-
ting temperature has been reached). The indicated values for the settings are
approximate values. The setting of the air slider that suits the heating require-
ments of the room is established by experimenting. See Table 3 to learn more
about the recommended amount of firewood to be added and burning times.
Heating
When only embers are left on the grate, new fuel should be added evenly over
the whole grate. To do so, spread the embers evenly over the grate and then
more fuel can be placed on top.
Fuel filling level
Please note that your stove should only be filled up to the secondary air vents
at the side walls and the rear wall of the combustion chamber and not above
the air vents of the upright grate behind the combustion chamber door, as this
would obstruct the air flow in the combustion chamber. On stoves with viewing
windows this will result in soot deposits and darkening of the glass (ceramifi-
cation, not covered by warranty). In any case, this will lead to incomplete and
inefficient combustion and subsequently to low efficiency with all appliances.
Cooking
For cooking change the operating mode to cooking . Cooking is best done
on a hot but not red-hot stove plate. Overheating is synonymous with wasting
of fuel. The highest stove plate temperature is in the immediate vicinity of the
heat exchanger (above the boiler thermometer). This area is therefore ideally
suited for rapid initial cooking. The edge zones with lower temperatures can be
used for slow cooking or keeping warm. You are best advised to use pots with
a thick, flat base and a fitting lid.
Baking and Roasting
Set the operating mode button to . For baking and roasting, evenly distri-
buted heat is needed. To achieve this evenness and a high enough tempera-
ture, the oven must be preheated to the temperature that suits the food to be
baked, with the start-up flap closed. When the oven has reached the required
temperature put the items to be baked inside. However, do not let the fire burn
too fiercely; only add fuel in small quantities. The desired temperature in the
oven can be achieved by adjusting the supply of the combustion air (secon-
dary and primary air regulator). Place high cake tins on the rack in the bottom
groove. Cakes in tins can be baked at a moderate heat (180 – 200º). A baking
tray with flat cakes or biscuits can be put in using either of the grooves. In
this case increasing the heat to 200 - 220º is recommended. For roasting much
higher temperatures are needed, preheating is essential.
Heating in between seasons
When outdoor temperatures are above 15°C, it may occur that due to low chim-
ney draught the fire does not burn very well. This will result in an increased
build-up of soot in the flue passages of the appliance and in the chimney.
To reduce the build-up of soot when heating in between seasons, increase
the primary air supply, poke the fire more often and add fuel more frequently
(smaller pieces of wood).

Page 19
14.14.14.
Maintenance and CleaningMaintenance and CleaningMaintenance and Cleaning
Regular maintenance and care or cleaning of the appliance, the flue gas ducts,
the connecting piece and the chimney are particularly important for the opera-
tional safety, efficiency and maintaining the value of the appliance.
A thorough cleaning should be performed after each heating period and after
a long period of non-use (see Important instructions, page 4). When used fre-
quently or when using poor-quality fuels, correspondingly more often.
• Remove cooking plate and clean it, in particular the underside. With glass
ceramic hobs, clean the bottom with a hand brush, and for steel cooking
plates use a wire brush.
• Remove the grate and brush it. Clear out clogged grate slits.
• Remove and sweep flue gas pipe(s).
• Clean combustion chamber walls and flue gas ducts with the ash shovel.
• Brush start-up flap and fixture and check that it operates correctly.
• Remove ash pan and empty it. Sweep the ash pan enclosure.
• Use the ash shovel to clean the flue gas ducts accessible after removing the
cleaning cover.
• Check the sealing cords of the cooking plate and of the cleaning cover; re-
place them if required.
• Clear the secondary air vents of the protective plate of the firebox door using
a wire brush.
• When cleaning chrome, anodised or enamel surfaces, use only gentle (non-
alkaline) cleaning agents and no abrasive cleaning tools. The same applies
to cleaning the oven.
• When reinstalling the various appliance components (flue gas pipe, cooking
plate, grate, cleaning cover, ash pan) ensure they are correctly positioned and
function as required and / or that there are no leaks.
• When positioning the cooking plate, make sure there is a 2 mm wide gap to
the stove frame all round.
Cleaning opening
The cleaning door panel is secured by a ball catch and swivels open (Figure
33). The cleaning cover behind it is attached to the stove front with 2 wing
nuts and should be removed to clean the flue gas ducts. Before replacing the
cover, check the rope seal of the cleaning cover for tightness and replace it if
necessary.
Removing cooking plate
To remove the cooking plate first open the oven door (Figure 34). Insert the
supplied multi-purpose wrench into the opening below the stove frame, push
the cooking plate upwards and take it out.
Using a vacuum cleaner
Allow the appliance to cool down completely and only use a vacuum cleaner
with an “Ash Box” accessory – FIRE HAZARD.
Cleaning the heat exchanger
To clean the tube heat exchanger, take out the cooking plate. Remove the
change-over damper stop on the rear wall of the heat exchanger (Figure 35).
Swing open the change-over damper by means of the operating mode control.
Remove deposits from the heat exchanger pipes using the supplied cleaning
brush.
Cleaning the connecting piece
Take out the cooking plate and clean the exhaust gas pipe connection and the
connecting piece with a suitable brush or use the vacuum cleaner (only with an
“Ash Box” accessory – fire hazard). Provide cleaning openings for long connec-
ting pieces and angled pieces.
Figure 33
Figure 35
Figure 34
cleaning cover
with rope seal
cleaning door panel
cleaning brush
2.
1.
3.
1.
2.
3.

Page 20
Grate
The ash can be removed from the grate quite easily by riddling the grate. Howe-
ver, if the air slits are very clogged by slag, crusts or other combustion residue,
completely remove the grate and clean it. To do this, open the combustion
chamber door and the ash door, pull out the ash drawer, lift the grate from
below and pull it out through the combustion chamber door.
After the cleaning, push the grate through the combustion chamber door as far
as the rear fireclay, lower it at the back and once more push it back as far as it
goes. Then do the grate riddling.
Ash pan
Empty the ash pan at regular intervals and early enough. The pile of ash must
not obstruct the primary air vents in the ash pan.
Oven door
To allow the oven to cool down, the oven door can be fixed at an angle of
approximately 70°. The oven door can be completely removed. This is a real
advantage when the oven is to be thoroughly cleaned.
Removing the oven door
• Fully open the oven door. Fold the clips in the door hinges forward (Figure
36).
• Hold the oven door at the sides using both hands. Lift the door slightly and
pull the hinges forwards from the door openings (Figures 37+38).
Reinstalling the oven door
• Hold the oven door with both hands at the sides and insert the hinges into
the corresponding openings in the oven. The hinge will engage (Figure 39).
• Fully open the oven door slowly. Again fold back the clips on the door hinges.
Close the oven door (Figure 40).
Cleaning the glass viewing window of the oven
If the appliance is overheated or if a gasket is damaged, the inside of the glass
viewing window of the oven may become fogged. To clean it, please proceed
as follows:
• Remove oven door as described and place it on a clean surface, undo the
handle screws (2x) and remove the oven door handle (Figure 41).
• Swivel open the oven door panel on the handle side and move it forwards
to remove it (Figure 42).
• Remove the viewing window glazing unit and the silicone gasket (Figure 43).
CAUTION: Remember the correct position of the silicone gasket
• Carefully clean the glass. To do so, use gentle cleaning agents (e.g. soapy
water) and a soft cloth.
• Reassemble the parts in reverse order.
Side rails of the oven
The side rail assemblies of the oven can also be removed for ease of cleaning.
Removal:
Lift the side rail assembly at the front and take it out of the oven (Figure 44).
Reinstallation:
Engage the side rail assembly at the rear, then push downwards at the front (Figure
45).
Fit the telescopic pull-out
Clip the pull-out onto the side rods (the bolt for hinging the baking tray is at
the front). (Figure 46)
Aattch the baking tray
Place the baking tray onto the extended pull-out. To do this, the baking tray
needs to engage into the bolt.
Make sure that the baking trays are placed correctly onto the pull-out, other-
wise they can easily fall out! (Figure 47)
Figure 36
Figure 37 Figure 38
Figure 39
Figure 40
Figure 41
Figure 42
Figure 43
Figure 44
Figure 45
Figure 47
Figure 48
Figure 49
The ash can still contain live embers: Dispose of the ash only into metalThe ash can still contain live embers: Dispose of the ash only into metalThe ash can still contain live embers: Dispose of the ash only into metal
canisters.canisters.canisters.