Spartherm ambiente a1 User manual

Installation and Operating Manual
ambiente stoves

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PREAMBLE – QUALITY PHILOSOPHY
You have chosen to purchase a SPARTHERM stove – thank you for the trust you have
placed in us. In a world characterised by an abundance of choice and mass production,
our company name is associated with the principles:
“High technical quality combined with contemporary design and service for the satisfaction
of our customers and to achieve their recommendation.”
In combination with our specialist trade partners, we offer you first-class products that
touch people on an emotional level, creating feelings of security and comfort. To ensure
this is achieved, we recommend that you carefully read these operating instructions so
that you can become quickly and comprehensively acquainted with your stove. Besides
information on using the stove, these instructions also include important care and oper-
ating information for your safety and to maintain the value of your stove, as well as
providing you with valuable tips and assistance.
In addition, we will demonstrate how you can operate your stove in an environmentally
friendly way. If you have any further questions, please contact your specialist dealer.
Hoping you enjoy a beautiful fire at all times!
Your SPARTHERM Team
G.M. Rokossa

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OVERVIEW OF THE INSTALLATION AND OPERATING INSTRUCTIONS // ambiente STOVES
General Information 4
1. Tested Quality 5
1.1. Scope of Supply 5
1.2. Damage in Transit 5
2. Installation Instructions 5
2.1. General Requirements for Installation 5
2.1.1. Installation Location 6
2.1.2. Multiple Usage 6
2.2. Technical Data 7
2.3. Assembly / Installation 8
2.3.1. Fitting the Flue Gas Stack 8
2.3.2. Fitting the Screen to the Swivel Connector 11
2.3.3. Fitting the Storage Stones 11
2.4. Combustion Air Supply 14
2.4.1. Non-room air sealed operation (RLA) 14
2.4.2. Room air sealed operation (RLU) 15
2.4.3. Separate Combustion Air Supply 15
2.5. Fire Precautions 16
2.6. Shut-off Devices 18
2.7. Connecting pieces 18
2.8. Swivel Connector 20
2.9 Installing the Water-heating Components of the ambiente a4 H2O 20
2.9.1 ambiente a4 H2O pipe connections 20
2.9.2 Basic Requirements for Installation of the ambiente a4 H2O 21
2.9.3 Thermal discharge safety device ambiente a4 H2O 22
2.9.4 Thermal pump control ambiente a4 H2O 22
2.9.5 Electrical Connection 23
2.9.6. Connecting the ambiente a4 H2O to a Heating System 23
2.9.7 Load unit (heat charger) in the ambiente a4 H2O stoves 26
3. Operating Instructions 26
3.1 General Operating Information 26
3.2 Fire Precautions 27
3.3 Functioning of Swivel Connector 27
3.4 Rating Plate 27
4. Combustion 28
4.1 Lighting the Stove for the First Time 28
4.1.1 Commissioning the ambiente a4 H2O 29
4.2 Controlling the Combustion Air Supply 30
4.3 Lighting Up / Burning 30
4.3.1 Adding More Wood / Fire Out 32
4.3.2 Hourly Wood Consumption 32
4.4 Controlling the Heat Output 33
4.5 Room Heating Capacity / Room Temperature 33
4.6 Heating in the Transitional Period / Unfavourable Weather Conditions 34
4.7 Operation of the Water Heat Exchanger with the ambiente a4 H2O 34
5. Fuel 34
5.1 CO2neutrality 35
5.1.1 Storing wood 35
5.2 Your contribution to environmental protection 36

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GENERAL INFORMATION
Before your ambiente a1/a2/a3/a4/a4 H2O/a5/a7/a8 stove is assembled and
installed you should meet with the master chimney sweep responsible for
such matters in your area. He will advise you on the building regulations
and suitability of your chimney and will carry out the acceptance test on
your stove. Calculation of the dimensions of the chimney is based on DIN
EN 13384 using the triple values contained in this manual (see Technical
Data).
Important for young children, the elderly or the frail: As with all other
heating appliances, a guard should be fitted to protect the above persons
because both the glass door and the stove cover panels can become very
hot in use. Caution: Risk of burns! Never leave such individuals unsuper-
vised near a stove when it is lit or when the fire has just gone out. As a
basic rule, the stove should not be left unattended for long periods of time
when lit.
The protective glove supplied is designed only for protection from
heat when operating the control handle and the cold hand. The glove
is not fireproof.
When assembling and operating your stove and when connecting it to the
chimney you must ensure that you comply with national and European
standards, the relevant country-specific and local guidelines and regula-
tions and, in Germany, the relevant Heating Regulation (FeuVO) of the state
where you live.
The stove should always be operated with the door closed. Modifying the
closing system is not permissible.
6. Cleaning and care 36
6.1 Cleaning the firebox / outer casing 36
6.1.1 Cleaning the water heat exchanger in the ambiente a4 H2O 37
6.2 Firebox lining 38
6.3 Chimney fire 38
6.4 Maintenance 40
6.4.1. Maintenance of the water heat exchanger in the ambiente a4 H2O 40
6.4.2 Bleeding air out of the water heat exchanger in the ambiente a4 H2O 41
7. Troubleshooting 41
7.1 Glass experiencing heavy, quick and irregular sooting 41
7.2 Fire is difficult to light 41
7.3 Smoke leakage when adding wood to the fire 41
7.4 Fire burns too quickly / wood consumption too high 42
7.5 Water heat exchanger in the ambiente a4 H2O 42
8. General warranty terms and conditions 43
8.1 Scope of application 43
8.2 General information 43
8.3 Warranty period 43
8.4 Requirement of Effectiveness for the Warranty 43
8.5 Warranty exclusions 44
8.6 Defect remediation / Repairs 44
8.7 Extension of Warranty 44
8.8 Spare of warranty 44
8.9 Liability 44
8.10 Note 45
9. Commissioning report 46
9.1 Commissioning report for ambiente a1/a2/a3/a4/a5/a7/a8 46
9.2 Commissioning report for ambiente a4 H2O 47

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1. TESTED QUALITY
OUR STOVES ARE TESTED TO DIN EN 13240. THE DECLARATION OF PER-
FORMANCE MAY BE VIEWED AND IS OBTAINABLE FROM WWW.SPARTHERM.
COM
This stove has a self-closing firebox door, and so the door is only ever
opened for operating purposes (e.g. cleaning the firebox or putting on more
wood). For safety reasons, tampering with the closing mechanism is not per-
missible and will void the warranty and the operating permit. The warranty
and the operating permit will also be voided if any technical modifications
are made to other parts of the stove.
1.1. SCOPE OF SUPPLY
ambiente a1/a2/a3/a4/a4 H2O/a5/a7/a8 stove with the following
features:
• Firebox made from eboris 1300 (refractory concrete)
• Primary and secondary air supply
• Self-closing firebox door with high temperature-resistant ceramic glass
viewing pane
• Protective glove
• Rating plate (for mounting location see section „3.4 Rating Plate“ on
page 29)
• The stove is pre-assembled. It is delivered in disposable cardboard
packaging for ease of transport.
• Pump thermostat (ambiente a4 H2O only)
• Thermal discharge safety device ¾¨ with vent valve (ambiente a4 H2O
only).
1.2. DAMAGE IN TRANSIT
Please inspect the goods immediately upon delivery (visual check). Any
damage should be noted on your delivery note. You should then inform
your stove fitter. Protect the visible parts of the stove from dirt and damage
during installation.
Only approved and sufficiently strong handling aids should be used to trans-
port your stove. The following points must be noted to ensure safe transport
without any problems:
• The stove should always be transported in the upright position or tilted
slightly backwards (the back of the stove is labelled).
• A hand truck used as a handling aid must load the stove from the rear
only.
2. INSTALLATION INSTRUCTIONS
The assembly and installation of your ambiente a1/a2/a3/a4/a4 H2O/a5/
a7/a8 stove should be carried out by a specialist. Before your stove is
assembled and installed you should meet with the master chimney sweep
responsible for such matters in your area to discuss the suitability of your
chimney and the installation location and to clarify other matters.
2.1. GENERAL REQUIREMENTS FOR INSTALLATION
All relevant national and European standards and local regulations (DIN,
DIN EN, state building regulations, heating system regulations, etc.) must
be noted and observed when installing, connecting up and operating the

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ambiente a1/a2/a3/a4/a4 H2O/a5/a7/a8. Selected relevant regulations are
listed below. This list does not claim to be complete.
FeuVo / LBO / VKF Heating System Regulations of the relevant federal state / state
building regulations or VKF fire protection regulations (Switzerland)
BImSchV Stage 1 First Implementing Ordinance to the German Federal Immission
Control Act
TR-OL Technical Rules of the Stove and Hot Air Heating System Trade
(ZVSHK)
DIN 1298 / EN 1856: Connecting Pieces for Fireplaces
DIN EN 13240 Stoves / Solid Fuel Room Heaters
DIN 18896 Solid Fuel Fireplaces. Technical Rules for Installation and Operation
DIN EN 13384 Flue System Calculating Methods
DIN 18160-1/2 Flue Systems / Domestic Chimneys
DIN 4751 / DIN EN 12828 Heating Systems in Buildings – Planning Hot Water Systems
VDI 2035 Water Conditioning for Heating Systems
LRV LRV (Switzerland)
Art. 15a Art. 15a B-VG (Austria)
This list of regulations and requirements does not claim to be complete.
Fireplaces should only be installed in rooms and at locations where the
position, structural conditions and type of use will not create any hazards.
The floor area of the room where it is installed must be of such a type and
size that the fireplace can be correctly operated in accordance with the
instructions.
The ambiente a1/a2/a3/a4/a4H2O/a5/a7/a8 stove is a non-room air sealed
(open flue) fireplace. Problems may therefore arise if the stove is operated
at the same time as a ventilation system such as a kitchen extractor hood
or bathroom fan. Appropriate measures should be taken in such cases to
ensure that the stove can be operated safely (pressure monitor, door contact
switch, etc.).
These safety precautions do not apply in the case of a room air sealed
appliance (ambiente a1/a2/a3/a4/a4 H2O RLU).
2.1.1. INSTALLATION LOCATION
Your ambiente a1/a2/a3/a4/a4 H2O/a5/a7/a8 stove must not be installed:
1. In stairwells and landings, except in residential buildings with no more
than two flats.
2. In corridors accessible to the public
3. In garages.
4. In rooms or flats that are vented by ventilating systems or hot air sys-
tems using blowers, unless the safe operation of the stove is ensured.
5. In rooms where highly flammable or explosive substances or mixtures
are processed, stored or manufactured in such quantities that ignition or
explosion would be hazardous.
2.1.2. MULTIPLE USAGE
Multiple usage of the chimney in accordance with DIN 18160 is possible as
the ambiente a1/a2/a3/a4/a4 H2O/a5/a7/a8 stove has a self-closing firebox
door (a1). However, multiple usage must always be discussed and agreed
in advance with the master chimney sweep responsible for such matters in
your area. Note that all fireplaces connected to the same chimney must also
be approved for multiple usage.

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2.2. TECHNICAL DATA
The following data have been taken from the test report and relate to test
conditions.
Stove a1/a2/a3/a4 a4 H20a5 a7 a8
RLA RLU RLA RLU RLA RLA RLA
Type of fuel Logs
Hot water output (kW*) - - 5,2 5,2 ---
Heat output to room (kW*) 5,9 5,9 2,9 2,9 7,0 5,9 5,9
Wood consumption (kg/h) 1,9 1,9 2,2 2,2 2,2 1,9 1,9
Nominal heat output (kW) 5,9 5,9 8,0 8,0 7,0 5,9 5,9
Heat output range (kW) 4,5-7,7 4,5-7,7 5,6-10,4 5,6-10,4 4,9-9,1 4,5-7,7 4,5-7,7
Corresponding wood
consumption (kg/h) 1,4-2,4 1,3-2,5 1,2-3,0 1,5-2,7 1,5-2,8 1,4-2,4 1,4-2,4
Efficiency (%*) > 80 > 80 > 80 > 85 > 78 > 80 > 80
CO content at 13% O2(mg/Nm3)< 1250 < 1250 < 1250 < 1250 < 1250 < 1250 < 1250
Dust content (mg/Nm3)< 40 < 40 < 40 < 40 < 40 < 40 < 40
Flue gas temperature at stack1
(°C) 350 350 150 1150 1305 318 300
Manometric pressure (mbar**) 0,12 0,12 0,12 0,12 0,12 0,12 0,12
Flue gas mass flow (g/s) 5,1 5,1 7,6 7,6 6,8 5,1 5,8
Combustion air demand (m3/h) 19 18,8 26 26,1 23,5 17,8 17,8
Weight according to model (kg) from
180-335
from
180-335
approx
230
approx
230
approx
225 /
240 /
255
170-205 200-300
Permissible operating pressure
(bar) - - 3,0 3,0 ---
Stove a1/a2/a3/a4 a4 H20a5 a7 a8
RLA RLU RLA RLU RLA RLA RLA
Max. permissible flow tempera-
ture (°C) - - 105 105 ---
Max. operating temperature (°C) - - 95 295 2---
Minimum return temperature (°C) - - 60 60 ---
Water output resistance at 650
l/h (mbar) - - 26 26 ---
Minimum water throughput of
thermal discharge safety device
(litres)
- - 900 900 ---
Water capacity (litres) - - approx
29
approx
29 ---
Flow and return connection (IG) - - ¾¨ ¾¨ ---
Safety heat exchanger inlet and
drain connection (IG) - - ½¨ ½¨ ---
Minimum distances from combustible building components
Rear (mm) 100 100 3100 100 3200 150 150
Sides (mm) 150 150 3100 100 3200 150 100
Top (mm) 500 500 3500 500 3500 500 500
Radiant area (mm) 800 800 3800 800 3800 800 800
Requirements
BImSchV Stages 1 + 2 yes yes yes yes yes yes yes
EN 13240 yes yes yes yes yes yes yes
* The values shown represent the mean over a combustion period.
These values relate to type test conditions.
** Depending on the stove, negative pressures greater than 20-25 Pa may interfere with correct operation,
resulting in increased sooting up of the viewing panes or operating noise.
1Due to the low flue gas temperature of the ambiente a4 H2O, a suitable chimney system (insensitive to
moisture) is required, such as the Alkon made by Raab.
2The thermal discharge safety device integrated into the heating system will trigger at a flow temperature
of approx. 95°C.

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Stove a1/a2/a3/a4 a4 H20a5 a7 a8
RLA RLU RLA RLU RLA RLA RLA
DIN Plus yes yes yes yes yes yes yes
Regensburg municipal ordinance yes yes yes yes yes yes yes
Munich municipal ordinance yes yes yes yes yes yes yes
Aachen municipal ordinance yes yes yes yes yes yes yes
15a (for Austria) yes yes yes yes yes yes yes
Clean Air Ordinance from
01/2011 (for Switzerland) yes yes yes yes yes yes yes
3Refer to section „2.5. Fire Precautions“ on page 18. Various installation options are shown there, as the
distance can vary according to the version.
A Distance with a swivel connector 30 – 44 mm
ambiente a2
Fig. 1dFig. 1c
ambiente a4
ambiente a1
ambiente a3
Fig. 1a Fig. 1b

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2.3. ASSEMBLY / INSTALLATION
The ambiente a1/a2/a3/a4/a4 H2O/a5/a7/a8 stove must only be installed
on floors made of non-combustible materials with sufficient load-bearing
capacity. Please note the overall weight (see Technical Data). If necessary,
load-bearing capacity must be ensured by placing the stove on top of a
slab of non-combustible building material of sufficient thickness for weight
distribution purposes.
Stand the stove on the floor and level it horizontally, observing the safety
distances (refer to section „2.5. Fire Precautions“ on page 18). The legs
are height-adjustable.
2.3.1. FITTING THE FLUE GAS STACK
The ambiente a1/a2/a3/a4/a4 H2O/a5/a7/a8 is supplied ready assembled
as ordered. The flue gas outlet will be fitted at the rear unless otherwise
specified at the time of ordering. If the position subsequently has to be
changed, the following steps should be carried out:
ambiente a1/a2/a3/a4/a4 H2O
Changing installation from rear to top: Remove the chimney connecting
piece if already fitted (Fig. 2a Item A). Remove the top cover panel and
the top flue gas connection cover panel (Fig. 2a Item B). Undo the screws
and remove the cover plate (Fig. 2b Items B and C). Then dismantle the
rear flue gas outlet connecting sleeve. Start by undoing the screws (Fig.
2b Item D). Fit the connecting sleeve for the top flue gas connection (Fig.
2c Items E and F). Then fit the cover plate for the rear flue gas connection
(Fig. 2d Items E and F). Finally, fit the rear flue gas connection cover (the
ambiente a4 H2Oambiente a5
Fig. 1e Fig. 1f
ambiente a7
Fig. 1g
ambiente a8
Fig. 1h

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chimney connecting piece) and replace the cover on top (Fig. 2e Items E
and G). Coordinating storage stones can be used with the ambiente a4 (see
Fig. 4c).
Changing installation from top to rear: Remove the chimney connecting
piece if already fitted (Fig. 2f Item A). Remove the top cover panel and
the rear flue gas connection cover panel (Fig. 2f Item B). Undo the screws
and remove the cover plate (Fig. 2g Items B and C). Then dismantle the
top flue gas outlet connecting sleeve. Start by undoing the screws (Fig. 2h
Items C and D). Fit the connecting sleeve to the rear flue gas connection
(Fig. 2i Item E). Then fit the cover plate for the top flue gas connection
Fig. 2a Fig. 2b
Fig. 2d
Aremove
Bdetach
Cundo
Ddismantle
Efit
Ffasten
Gplace on top
Fig. 2e Fig. 2f
Fig. 2g
Fig. 2i Fig. 2j
Fig. 2h
Fig. 2c

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ambiente a7/a8
The ambiente a8 is a double-sided stove with two firebox doors. This stove
has a top flue gas stack connection (this cannot be altered).
The ambiente a7 is supplied ready assembled as per the order. The flue gas
outlet (dia. 150 mm) will be fitted at the rear unless otherwise specified at
the time of ordering. If the position subsequently has to be changed, the
following steps should be carried out:
Changing installation from rear to top: Remove the chimney connecting
piece if already fitted. Remove the top cover panel and the top flue gas
connection cover panel (Fig. 4a). Then dismantle the rear flue gas outlet
connecting sleeve. Start by undoing the screws (Fig. 4a). Undo the screws
and remove the cover plate (Fig. 4b). Fit the connecting sleeve for the top
flue gas connection (Fig. 4c). Then fit the cover plate to the rear flue gas
connection (Fig. 4c). Finally, replace the cover panel in position (Fig. 4d).
Fig. 3a Fig. 3b
Fig. 3c Fig. 3d
(Fig. 2i Items E and G). Finally, fit the top flue gas connection cover (the
chimney connecting piece) and replace the cover on top (Fig. 2j Items E
and G). If changing the flue gas connection on the ambiente a4, the lower
rear storage stones should be replaced by the ‘small’ storage stone (order
number 1013340) (refer to Figs. 6c and 6d).
ambiente a5
Changing installation from rear to top: Remove the chimney connecting
piece if already fitted (Fig. 3a). Remove the top cover panel (Fig. 3a). Undo
the two hexagon head screws and remove the cover plate (Fig. 3b). Then
dismantle the rear flue gas outlet connecting sleeve. Start by undoing the
screws (Fig. 3b). Fit the connecting sleeve for the top flue gas connection
(Fig. 3c). Then fit the cover plate to the rear flue gas connection (Fig. 3c) .
Finally, replace the rear flue gas connection cover panel, the connecting
piece to the chimney and the cover plate (Fig. 3d).

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2.3.2. FITTING THE SCREEN TO THE SWIVEL
CONNECTOR
ambiente a1/a2/a3/a4/a4 H2O
The screen is on top of the stove at delivery. The screen should not be fitted
until the a1/a2/a3/a4 stove has reached its installation location and has been
levelled. Be sure to unscrew the legs by a distance of 6-14 mm (Fig. 5a).
Next, undo the two fastening screws on the rear of the screen (Fig. 5b
Item B).
Now fit the screen around the swivel connector. The screen has to be pulled
apart at the join to do this. After placing the screen in position, re-insert the
two screws at the join (Fig. 5b). Then screw the screen on to the retainers
provided (Fig. 5c).
The functioning of the swivel connector is described in section „3.3 Func-
tioning of Swivel Connector“ on page 28.
Fig. 4a Fig. 4b
Fig. 4c Fig. 4d
Fig. 5a
Fig. 5b
Fig. 5c
AScreen
Bremove screws
Cover panel
Cover panel
Cover plate
Cover plate
Connecting
sleeve
Connecting
sleeve

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2.3.3. FITTING THE STORAGE STONES
ambiente a3/a4
Storage stones can only be fitted or retrofitted to the ambiente a3 and a4
models.
If the ambiente a3 or a4 is ordered with storage stones, the front stone
and supporting plate are already fitted at the factory. For weight reasons,
the other storage stones are assembled on site. Stoves are supplied with
a rear flue gas connection as standard, unless otherwise specified at the
time of ordering.
To install the storage stones, start by removing the cover. Note that the
stove should not yet be connected to the chimney when doing this.
Fitting the front stone:
(only if retrofitting storage stones) Start by installing the front stone (A).
Next, fit the supporting plate (B) (Fig. 6a).
Fitting the storage stones:
ambiente a3 with top and side flue gas connection: Place the three shallow
stones in position to form a ring and replace the cover (Fig. 6b).
ambiente a4 with top flue gas
connection:
Start by placing the six tall stones
in position to form a ring. These
have a recessed handle on the
inside to facilitate assembly. Now
place the three shallow stones in
position to form a ring and replace
the cover (Fig. 6c).
ambiente a4 with side flue gas
connection:
Start by placing the two small
stones under the flue gas pipe,
and then place the four tall stones
in position. These have a recessed
handle on the inside to facilitate
assembly. Now place the two shal-
low stones in position and replace
the cover (Fig. 6d).
Fig. 6c
Fig. 6dFig. 6a Fig. 6b

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Controlling the heat output to the
storage system:
(ambiente a3 and a4 only)
The heat output to the storage stones
can be controlled via the adjustment
lever (Fig. 6e). If the adjustment
lever is moved to the ‘+’ position,
the convective heat is transmitted
directly from the stove to the room.
The room will warm up faster at this
setting. If the adjustment lever is set
to the ‘-’ position, the convective heat
will remain in the storage stones for
longer. The heat is stored in the stove and slowly released to the room after
the fire has gone out. The stove will continue to provide a cosy warmth even
when the fire has gone out.
AFront stone
BSupporting plate
CConvective heat to room
DConnecting sleeve
ECover
FConvective heat to storage stones
GConvection air adjustment lever
ambiente a5
The ambiente a5 stove can be optionally fitted with storage stones for pro-
longed heat storage. Proceed as follows to fit the stones: In order to fit
storage stones to the ambiente a5 stove, the first step is to remove the stove
top cover (Fig. 7a).
Now push the ‘front’ storage stone (WxHxD 310 mm x 285 mm x 30 mm)
into the front locating slot (Fig. 7b). Next, place the two ‘back’ storage
stones (WxHxD 250 mm x 390 mm x 30 mm) in the locating slot at the rear
of the body (Fig. 7c). Place the ‘top’ storage stones (Fig. 7d - 7h) on the top
Fig. 6e
Fig. 7a Fig. 7b
Fig. 7c Fig. 7d

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plate of the stove body, according to whether the stove has a top or rear flue
gas connection. (This example shows a rear flue gas connection). After put-
ting the storage stones in position, replace the stove top cover. (Fig. 7i - 7j)
2.4. COMBUSTION AIR SUPPLY
The combustion air supply can be provided in various ways as described in
sections 2.4.1, 2.4.2 and 2.4.3.
2.4.1. NON-ROOM AIR SEALED OPERATION (RLA)
Your ambiente a1/a2/a3/a4/a4 H2O/a5/a7/a8 stove draws the air it needs for
combustion from the room where it is installed (non-room air sealed opera-
tion). An adequate supply of fresh air must be ensured in the room where the
stove is installed (for further details refer to the heating systems regulations
for the country concerned, DIN 18896, the technical rules, etc.) The installer
and the operator of the stove should check the fresh air supply. An adequate
air supply for combustion must be ensured when several fireplaces are oper-
ated in one room or in connecting rooms. If the windows and doors are sealed
(e.g., in connection with energy-saving measures) the fresh air supply may
be restricted and that can adversely affect the stove’s draught. This can be
detrimental to your health and also, in some cases, to your safety.
If necessary, an additional air supply can be provided by fitting an air inlet near the
stove or by fitting a combustion air intake pipe which connects with the external
air (refer to section 2.4.3 Separate Combustion Air Supply on page 16) or with a
well ventilated room (not the room where the stove is installed). In particular, it
must always be ensured that the necessary combustion air intakes remain oper-
ational when the fireplace is in use. Note that operating a ventilating system at
the same time, e.g. an extractor hood or bathroom fan, in the same room or in
a connecting room can adversely affect the operation of the stove (even causing
smoke or flue gas to leak out into the room, despite the firebox door being closed).
Ventilating devices must therefore not be operated at the same time as the stove
unless suitable measures are taken to maintain the air supply to the stove.
Fig. 7g
Fig. 7e
Fig. 7h
Fig. 7f
Fig. 7i Fig. 7j

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2.4.2. ROOM AIR SEALED OPERATION (RLU)
Your ambiente a1/a2/a3/a4/a4 H2O RLU stove does not draw the air it needs
for combustion from the room where it is installed (room air sealed oper-
ation). Combustion air intakes and pipes must not be obstructed or closed
unless special safety devices are fitted to ensure that the stove can only
be operated when the closing system is open. The cross-section must not
be reduced by means of an obstructor or grille. According to EnEV, the
combustion air pipe should be fitted with a shut-off device. The position of
the shut-off device must be obvious from the outside of the connecting pipe.
This measure is not necessary with balanced flue systems. The combustion
air intake pipe should be insulated to prevent moisture from the ambient
air from condensing on the pipe. Also, when fitting the pipe it should be
ensured that no water or other substances can enter the ambiente a1/a2/
a3/a4/a4 H2O RLU stove and that any condensate can drain away outside.
According to the relevant provisions, combustion air ducts that bridge
firewalls in buildings with more than two full storeys must be constructed
such that fire and smoke cannot spread to other storeys or fire lobbies.
The national and local fire precautions for the place of installation must be
observed. Please ensure that the pipework is always leaktight.
2.4.3. SEPARATE COMBUSTION AIR SUPPLY
It is possible to provide the stove with a separate combustion air supply. The
separate combustion air connection is located at the rear of the unit and in
the lower compartment (D = 100 mm) at the sides. The connecting piece
is ready-assembled. The stove covering can be opened up for the purpose
(unscrew the cover cap) and the connecting piece can be screwed on. If a
pipe connection is attached to the combustion air coupling, the combustion
air is drawn into the stove from outside or from other rooms such as the
basement. When connecting up the stove to a combustion air pipe, the
requirements of TR-OL (technical rules), DIN 18896, etc. must be observed
and applied. In particular, sufficient dimensioning of the pipes must
be ensured.
If using a swivel connector, a permanently flexible connection must
be made. The rotating action must not be restricted.
Combustion air intakes and pipes must not be obstructed or closed unless
special safety devices are fitted to ensure that the stove can only be
operated when the closing system is open. The cross-section must not
be reduced by means of an obstructor or grille. If the combustion air pipe
has to be routed out of the building, a shut-off device must be fitted. The
shut-off device must be identifiable from outside. In the case of an external
connection the pipe should be insulated, as condensate may form. Also,
when fitting the pipe it should be ensured that no water or other substances
can enter the stove and that any condensate can drain away outside. Please
note that room air sealed operation of the stove is not possible with a sepa-
rate combustion air supply. That means that appropriate safety precautions
must be taken if operating an extractor fan or cooker hood when the stove
is in use.
According to the relevant provisions, combustion air ducts that bridge
firewalls in buildings with more than two full storeys must be constructed
such that fire and smoke cannot spread to other storeys or fire lobbies.
The national and local fire precautions for the place of installation must be
observed.

17
Special instructions for the ambiente a7/a8
It is possible to provide the stoves with a separate combustion air supply. The
separate combustion air connection is located at the rear of the stove (a7 only)
and on the underside of the stove (D = 100 mm). Proceed as follows to connect
up the combustion air supply.
Installation on underside of stove (a7 and a8):
Stand the stove on the floor above the combustion air connection. Now care-
fully lift off the stove covering. (Fig. 8a). Next, unscrew the screw cap. (Fig.
8b). Connect the combustion air connecting piece to the flexible, extensible
combustion air duct installed on site. If the combustion air connection is
rigid at floor level, the separate combustion air connecting piece supplied
must be pushed into the connection to form an airtight seal.
Installation at rear of stove (a7):
Start by unscrewing the screw cap (Fig. 8d). Now fit the combustion air
connecting piece (Fig. 8e). Lastly, connect the combustion air connecting
piece with the combustion air duct.
Fig. 8a Fig. 8b
Fig. 8c
Fig. 8d Fig. 8e

18
2.5. FIRE PRECAUTIONS
General Information about Fire Precautions
Stoves are heating systems and are subject to regulations and essential fire
precautions. The fire precautions and minimum distances should be borne
in mind when selecting the installation location for the stove. A minimum
distance of 5 cm from the rear wall must always be maintained.
Greater distances should be allowed for reasons of safety and fire
prevention in the case of walls that need to be protected or combus-
tible building components.
The table that follows shows the distances that must be maintained accord-
ing to the type of stove and the installation situation on site. Use the draw-
ings (Figs. 9-11) to help you determine your particular installation situation
and note the distances that must be maintained.
Note the fire precautions when installing the stove. Ask your local
chimney sweep for advice.
• Their structure and materials enable non-combustible mounting walls
not in need of protection to be permanently exposed to temperatures
above 85°C. Combustible mounting walls in need of protection (e.g.
stud partition construction) must be protected from temperatures above
85°C.
The mounting walls should be assessed before installing the stove. If the
nature of the mounting wall cannot be identified with certainty, a specialist
(such as the chimney sweep) should be consulted.
• According to DIN 4102-1, wallpaper used as a wall covering is not con-
sidered a combustible building component and does not require any
special precautions.
• Please note that the minimum distances indicated from rear walls and
side walls need to be adapted for rotating stoves.
• It is important to observe the minimum distance from the chimney con-
necting piece to combustible building components (refer to section „2.7.
Connecting pieces“ on page 20).
• There must be no combustible objects within a radius of 50 cm above
the stove.
Floor coverings near the stove
Floors made from combustible materials in front of the firebox door must be
protected by a covering of non-combustible materials. This covering should
extend at least 50 cm in front of the stove and at least 30 cm at each side
(Figs. 9-11) (measuring from the firebox door or viewing pane).
There must be no combustible building components, furniture, curtains or
decorations within the radiant area of 80 cm (Figs. 9-11) in front of the
firebox door or viewing pane. That distance can be reduced to 40 cm if a
fire screen ventilated on both sides is placed between the fireplace and
any combustible objects. Before your stove is lit for the first time it must
undergo acceptance by the local chimney sweep. Your local chimney sweep
can/should advise you on the installation conditions before your stove is
installed and give you instructions on the correct installation of your stove.
Minimum distances from nearby building components
The distances indicated in the table below must be observed, according to
your stove’s viewing pane arrangement (see sketches below) and the nature
of the mounting walls. In the stove installation example shown in Fig. 9, if

19
dimension B is observed and dimension E measured on site is less than the
value indicated, then it is not necessary to allow for the radiant area with
respect to the side walls. However, if the side wall is longer than dimension
E, it must be decided on site whether this wall needs to be protected. The
position of the radiant area can be altered if necessary by increasing dimen-
sion A or dimension B.
(z.B.Sessel)
Brennbar
A
B
C
E
D
Mittelpunkt
Brennraum
Fig. 9
Curved glass – a1, a2, a3, a4, a4 H2O non-rotating
Brennbar
(z.B.Sessel)
C
C
C
D
Mittelpunkt
Brennraum
100°
Fig. 10
Curved glass – a1, a2, a3, a4 rotating
Brennbar
(z.B.Sessel)
D
C
A
B
Mittelpunkt
Brennraum
E
70°
Fig. 11
Straight glass – a5, a7, a8 non-rotating
Stove Distance from side wall Distance from rear wall Distance within radiant area of
pane(s)
Dimensions of fireproof floor covering Distance for area to
be protected from
radiant heat
A(cm) B(cm) C(cm) D(cm) E(cm)
Combustible Protection not
needed
Combustible Protection not
needed
Combustible Protection not
needed
Length x width Distance (round floor covering)
ambiente a1 15 10 10 580 80 50 x 30 50 66
ambiente a2 15 10 10 580 80 50 x 30 50 66
ambiente a3 15 10 10 580 80 50 x 30 50 66
ambiente a4 15 10 10 580 80 50 x 30 50 66
ambiente a4 H2O10 10 5 5 80 80 50 x 30 50 66
ambiente a5 20 10 28 580 80 50 x 30 50 66
ambiente a7 15 10 15 570 70 50 x 30 50 100
ambiente a8 10 10 - 5 65 65 50 x 30 50 100
In the stove installation example shown in Fig. 9, if dimension B is observed and dimension E measured on site is less than the value indicated, then it is not necessary to allow for the radiant area with respect to the side walls. However,
if the side wall is longer than dimension E, it must be decided on site whether this wall needs to be protected. The position of the radiant area can be altered if necessary by increasing dimension A or dimension B.
Combustible
(e.g.
armchair)
Combustible
(e.g.
armchair)
Combus-
tible
(e.g.
armchair)
Center
Combustion
chamber
Center
Combustion
chamber
Center
Combustion
chamber

20
2.6. SHUT-OFF DEVICES
Flue systems should be constructed in accordance with the Technical
Rules of the Stove and Hot Air Heating System Trade. It is permissible
for stoves to have a shut-off device in the flue system. This device must not
interfere with inspection and cleaning of the connecting piece and it must not
be of self-closing design. The status of the shut-off device must be obvious
from the outside, e.g. from the position of the control handle. Such devices
may only be fitted in the flue gas manifold, flue gas stack or connecting piece.
2.7. CONNECTING PIECES
Connecting pieces: Your ambiente a1/a2/a3/a4/a4 H2O/a5/a7/a8 stove is
connected to the chimney by 150 or 160 mm diameter connecting pieces
made from steel sheet at least 2 mm thick. These must comply with DIN
1298 or DIN EN 1856-2 and they must be connected to the chimney in
accordance with DIN 18160 or the regulations that apply in the country
concerned.
It is important to ensure that the flue gas pipe takes the shortest possible
route upwards towards the chimney. The number of bends in the flue gas
pipe should be kept to a minimum. In addition, the flue gas pipe should be
connected to the chimney by a wall lining that makes a seal with the wall
and the pipe. If necessary, the flue gas pipe should be fastened with clips
to hold it securely in place. If the flue gas pipe passes through components
made from combustible materials, the flue gas pipe must be insulated in
accordance with the regulations.
The basic rule is that the connecting piping should be installed in such a
way that it can be cleaned at any time. This should be ensured by providing
an appropriate number of cleaning apertures.
If the ambiente a1/a2/a3/a4 RLA is designed to rotate, the connecting pip-
ing should be installed in such a way that the fastening is not compromised.
The flue gas pipe must not turn when the stove rotates.
Depending on the information provided by the flue gas pipe manufacturer,
the minimum distance from the chimney connecting piece to combustible
components may increase the distance between the stove and combustible
building components. The minimum distances from combustible compo-
nents stated in this Manual refer to the stove, and should be adapted if
necessary (refer to section „2.5. Fire Precautions“ on page 18).
In the case of top flue gas routing, please note that a cleaning hatch must
be provided above the flue gas connecting pipe.
2.8. SWIVEL CONNECTOR
A swivel connector can only be used with the ambiente a1/a2/a3/a4 RLA
with top flue gas connection models and must be specified when ordering.
In this case the stove can be rotated 180°, i.e. 90° to the left and 90° to the
right. For operation of the swivel function refer to section „3.3 Functioning
of Swivel Connector“ on page 28).
2.9 INSTALLING THE WATER-HEATING COMPONENTS
OF THE ambiente a4 H2O
Installation of the water-heating components, including fitting the neces-
sary safety devices, etc., should always be carried out by a specialist. The
ambiente a4 H
2
O should be installed in such a way that all water-carrying
components are always accessible and can be inspected at any time.