Vaillant ecoTEC plus SERIES User manual

Installation Manual
For the competent person
GB, IE
Installation Manual
Flue pipe for ecoTEC plus
Concentric Ø 110/160

Table of contents
2Installation manual for the flue pipe for ecoTEC plus 0020137851_02
Table of contents
1 Notes on the documentation .....................................3
1.1 Observing other applicable documents .....................3
1.2 Storing documents ..........................................................3
1.3 Applicability of the instructions...................................3
2 Safety.................................................................................4
2.1 Classification of action-related warnings...................4
2.2 General safety information............................................4
2.3 Intended use......................................................................5
2.4 Regulations........................................................................5
2.5 CE label...............................................................................5
3 Installation dimensions................................................6
4 System overview of concentric system
Ø110/160mm ..................................................................7
4.1 Installation options ......................................................... 7
4.2 Product range...................................................................9
4.3 Elements ............................................................................9
4.4 Description of elements .................................................11
5 System conditions ........................................................15
5.1 Maximum pipe lengths...................................................15
5.2 Performance features of the flue pipes from
Vaillant for condensing units .......................................16
5.3 Requirements for the shaft for the flue pipe...........16
5.4 Location of the opening................................................16
5.5 Disposing of condensate...............................................16
5.6 Route of the flue pipe in the building........................16
6 Installation of the vertical roof duct .....................17
6.1 Installation instructions.................................................17
6.2 Installing the roof duct..................................................17
6.2.1 Black roof duct ................................................................17
6.2.2 Stainless steel roof duct............................................... 18
7 Installing the concentric connection to the
air/flue gas system (LAS)..........................................19
8 Installing the flue gas pipe on the
external wall.................................................................. 20
8.1 System diagram............................................................. 20
8.2 Static dimensions.......................................................... 20
8.3 Installing the flue gas pipe ...........................................21
8.3.1 Installation instructions.................................................21
8.3.2 Installing the connection for the external
wall pipe ...........................................................................22
8.3.3 Installing the clamps.....................................................24
8.3.4 Installing the roof duct.................................................24
8.3.5 Shortening an extension..............................................25
9 Installing the horizontal wall duct.........................26
9.1 System diagram..............................................................26
9.2 Installing the wall duct..................................................26
9.3 Installing the horizontal wall duct .............................27
10 Installing the horizontal flue gas pipe
Ø110/160mm.................................................................27
11 Customer service........................................................ 30
Index ...................................................................... 31

Notes on the documentation
Installation manual for the flue pipe for ecoTEC plus 0020137851_02 3
1
1 Notes on the documentation
1.1 Observing other applicable documents
For the competent person:
– Installation instructions for the installed gas-fired boiler.
1.2 Storing documents
>Please pass on this installation manual and all other
applicable documents and auxiliary equipment to the
plant operator.
The system operator will store these instructions as well as
any auxiliary materials so that they are available when
required.
1.3 Applicability of the instructions
This installation manual applies only for the Vaillant units
named in the other applicable documents.

4Installation manual for the flue pipe for ecoTEC plus 0020137851_02
a
Safety
a2
2 Safety
2.1 Classification of action-related warnings
The action-related warnings are classified in accordance
with the severity of the possible danger using the following
warning symbols and signal words:
Warning
symbol
Signal
word
Explanation
aDanger!
Imminent danger to life or risk
of severe personal injury
eDanger!
Risk of death from electric
shock
aWarning. Risk of minor personal injury
bCaution.
Risk of material or environ-
mental damage
2.1 Meaning of warning symbols
2.2 General safety information
>Before installing the flue pipe, you must inform the local
gas supply company and the master chimney sweep for
the district.
Qualification of the competent persons
The installation of the boiler and its flue must be carried
out by a competent person approved at the time by the
Health and Safety Executive. This competent person is also
responsible for proper execution. They must also comply
with the existing directives, regulations and guidelines.
Dangers caused by flue gas exit in the event of
improper installation.
In the event of improper installation, there is a risk that poi-
sonous gases may be emitted.
>Ensure that the installation is performed only by quali-
fied competent persons.
Risk of death by poisoning due to escaping flue
gases!
All openings in the flue pipe that can be opened for inspec-
tion purposes must be closed before start-up and during
operation.
>The openings must only be opened by a competent person.
For open-flued operation, the unit must not be placed in
rooms from which the air is extracted using fans (for exam-
ple, ventilation systems, extractor hoods, tumble dryer ven-
tilation). These systems generate negative pressure in the
room. This negative pressure can cause flue gas to be
sucked into the installation room from the opening through
the annular clearance between the flue gas pipe and the
shaft. The unit can be used in open-flued operation if simul-
taneous operation of the unit and the fan is not possible.
Avoid risk of suffocation!
If the flue gas pipe is not concentric and is therefore not
ventilated from behind, there is a danger of suffocation in
unventilated rooms.
>These rooms must be equipped with a ventilation open-
ing of 150 cm2that leads into the fresh air.
Prevent injuries caused by snow falling from roofs
Where flue pipes penetrate the roof skin, the water vapour
contained in flue gas may precipitate as ice on the roof or
the roof structures in unfavourable weather conditions.
>At the installation site, ensure that this ice build-up does
not slide from the roof.
Use of tools
Unsuitable tools or the improper use of tools can cause
damage (e. g. to casing and components).
>Always use appropriate screwdrivers or open-end span-
ners (fork wrenches) to loosen or tighten threaded con-
nections.
>Never use pipe wrenches, extensions, or other similar
tools.
Preventing the risk of corrosion in the flue gas
installation
Sprays, solvents, cleaning agents, paints and adhesives may
contain substances that could lead to corrosion in the flue
gas installation in some circumstances when the unit is in
operation.
>Only use appropriate Vaillant components for installing
the flue gas guiding.
>Ensure that the combustion air that is guided to the unit
is kept free of chemical substances that could contain,
e. g. fluorine, chlorine, or sulphur.
Preventing electronic damage and risk of fire
caused by lightning
The unit can be damaged by the effects of lightning.
>If the building is equipped with a lightning protection
system, incorporate the air/flue gas pipe into the light-
ning protection.
>If the vertical flue gas pipe contains materials made from
metal, incorporate it into the potential balancing.

Installation manual for the flue pipe for ecoTEC plus 0020137851_02 5
aSafety a
2
Malfunctions of the unit due to obstruction of the
flue gas flow!
If chippings, mortar residue, or similar objects enter the
flue pipe, the function of the unit may be affected.
>During installation, ensure that no chippings, mortar res-
idue, etc. remain in the flue pipe.
Malfunctions and condensation exit due to lack of
tightness in the flue gas route!
The seals are sensitive to mineral-oil-based grease.
>If necessary, use either water or the lubricant provided.
Fire protection
Outside the shaft, the flue gas pipes that are not in a con-
centric design must have a minimum clearance of 5 cm to
combustible components. In chimneys formerly used for oil
or solid fuels, which are now to be used for the supply of
combustion air, it is recommended that the chimney sweep
inspects and cleans the flue in question before the flue gas
pipe is installed. If it is not possible to adequately clean or
inspect the chimney (e. g. due to construction features), you
can
– use a separated air supply
or
– use open-flued operation for the system.
iIt is not necessary to leave a clearance between
the concentric flue pipe or the corresponding
extension and components made from combusti-
ble materials, because, at the nominal heat out-
put of the unit, components bordering the sur-
face cannot reach temperatures higher than
85°C.
2.3 Intended use
The Vaillant flue pipes for ecoTEC plus are constructed
using state-of-the-art technology in accordance with the
recognised safety rules and regulations. Nevertheless, there
is still a risk of death or serious injury to the user or others
or of damage to the unit and other property in the event of
improper use or use for which the unit is not intended.
The Vaillant flue pipes named in this manual must only be
used in combination with the unit types named in this man-
ual.
Any other, or additional use is considered improper use and
all responsibility or liability of the manufacturer/supplier for
any resulting damages is excluded. In this case, the respon-
sible competent person and the user bear the risk.
Intended use includes the following:
– Observance of accompanying operating, installation and
servicing instructions for Vaillant products as well as for
other parts of components of the system
– Installing and fitting the boiler in accordance with the
boiler and system approval
– Compliance with all inspection and maintenance condi-
tions listed in the instructions.
2.4 Regulations
Observe the national regulations, standards, guidelines and
laws.
2.5 CE label
The Vaillant ecoTEC gas-fired wall-hung boilers are certified
according to the EU gas appliances directive 2009/142/EC
as a boiler system with associated flue gas installation. This
installation manual is a part of the certification and is cited
in the type testing certificate. In compliance with the regu-
latory statutes of this installation manual, the proof of usa-
bility of the products identified by Vaillant article numbers
that are designed for the flue pipe is provided.
If you do not use certified elements for the Vaillant flue
pipe when installing Vaillant ecoTEC gas-fired wall-hung
boilers, this voids the CE conformity of the unit. We there-
fore strongly recommend that you fit Vaillant air/flue gas
systems.

Installation dimensions
6Installation manual for the flue pipe for ecoTEC plus 0020137851_02
3
3 Installation dimensions
102
175
960
1149
3.1 Installation dimensions

System overview of concentric system Ø110/160mm
Installation manual for the flue pipe for ecoTEC plus 0020137851_02 7
4
4 System overview of concentric
system Ø110/160mm
4.1 Installation options
Required
art. no. *) Type of installation Installation instructions
0020166853
(black) Vertical roof duct: con- centric air/flue gas pipe
through the roof
Maximum pipe lengths:
¬section 5.1
Installing the vertical roof duct:
¬section 6
0020166855 Concentric connection to
the flue gas pipe on the
external wall
Combustion air from out-
side
Maximum pipe lengths:
¬section 5.1
Installing the flue gas pipe on
the external wall: ¬section 8
Installing the horizontal flue
gas pipe: ¬section 10
4.1 Installation options (continued on next page)

System overview of concentric system Ø110/160mm
8Installation manual for the flue pipe for ecoTEC plus 0020137851_02
4
Required
art. no. *) Type of installation Installation instructions
0020166854 Concentric horizontal wall
duct Maximum pipe lengths:
¬section 5.1
Installing the horizontal wall
duct: ¬section 9
Installing the horizontal flue
gas pipe: ¬section 10
0020106380 with
0020106376 Concentric connection to vertical shaft system Maximum pipe lengths:
¬section 5.1
Installing the concentric con-
nection to the air/flue gas sys-
tem (LAS): ¬section 7
*) for additional flue components, see ¬section 4.2
4.1 Installation options (continued)

System overview of concentric system Ø110/160mm
Installation manual for the flue pipe for ecoTEC plus 0020137851_02 9
4
4.2 Product range
Product range Art. no.
Vertical roof duct, black (RAL 9005) 0020166853
Horizontal wall/roof duct 0020166854
Connection to flue gas pipe, concentric, for laying on external wall 0020166855
Connection to air/flue gas system (LAS) 0020106380 with 0020106376
4.1 Product range
4.3 Elements
Elements Art. no. 0020166853 0020166854 0020166855 0020106380 mit
0020106376
Extensions, concentric 0.5 m,
Ø110/160, PP 0020106376 X X X X
Extensions,
concentric 1.0 m,
Ø110/160, PP
0020106377 XXXX
Extensions,
concentric 2.0 m,
Ø110/160, PP 0020106378 X X X X
Elbow 45°,
concentric (x 2),
Ø110/160, PP 0020106379 X X X X
Elbow 87°, concentric
Ø110/160, PP 0020106380 X X X X
Fastening clamps with bolts and
rawl plugs (5 pcs), Ø160 0020106381 X X X X
External wall bracket (adjustable
50 to 90mm clearance), stainless
steel 0020106400 X
Extension for external wall bracket
(adjustable 90 to 280mm clear-
ance), stainless steel 0020106401 X
0.5 m extension for external wall
laying, concentric, interior PP,
exterior stainless steel 0020106402 X
1.0 m extension for external wall
laying, concentric, interior PP,
exterior stainless steel 0020106403 X
45° elbow for external wall laying
(2 pcs), concentric, interior PP,
exterior stainless steel 0020106405 X
30° elbow for external wall laying
(2 pcs), concentric, interior PP,
exterior stainless steel 0020106406 X
4.2 Elements (continued on next page)

System overview of concentric system Ø110/160mm
10 Installation manual for the flue pipe for ecoTEC plus 0020137851_02
4
Elements Art. no. 0020166853 0020166854 0020166855 0020106380 mit
0020106376
Roof duct conc., 1000mm with rain
penetration collar,
Ø110/160 0020106408 X
Air clamp for Ø110/160, stainless
steel 0020143394 X
Pitched roof tile 25° - 50°, flexible,
black (RAL 9005) 0020106409 X X
Flat roof penetration collar 0020106411 X X
4.2 Elements (continued)

System overview of concentric system Ø110/160mm
Installation manual for the flue pipe for ecoTEC plus 0020137851_02 11
4
4.4 Description of elements
Name Art. no. Elements
Extensions
concentric, Ø110/160, PP:
- 0.5 m
- 1.0 m
- 2.0 m
0020106376
0020106377
0020106378
Ø160
500 / 1000 / 2000 50 13
Ø110
Ø161
Ø110
Elbow 45°
concentric (2 pcs),
Ø110/160, PP
0020106379
Ø110
Ø160
Ø175
173
Elbow 87°
Concentric,
Ø110/160, PP
0020106380
Ø110
Ø160
167
168
Fastening clamps
with bolts and rawl plugs (5 pcs),
Ø110mm
0020106381
External wall bracket
(adjustable 50 mm to 90 mm clearance),
stainless steel
0020106400
225
159
30
50 - 90
4.3 Description of elements (continued on next page)

System overview of concentric system Ø110/160mm
12 Installation manual for the flue pipe for ecoTEC plus 0020137851_02
4
Name Art. no. Elements
Extension for external wall bracket
(adjustable 60 to 175mm clearance),
stainless steel
0020106401
230
110
Extension for external wall laying
concentric, interior PP, exterior stain-
less steel, Ø110/160, 0.5m
0020106402
Ø160
50
500 58
Ø110
Extension for external wall laying
concentric, interior PP, exterior stain-
less steel, Ø110/160, 1.0m
0020106403
Ø160
50
1000 50
Ø110
13
Elbow 45° for external wall laying
(2pcs)
concentric, interior PP, exterior stain-
less steel, Ø110/160
0020106405
Ø110
Ø160
Ø111
60
50
209
260
160,5
4.3 Description of elements (continued on next page)

System overview of concentric system Ø110/160mm
Installation manual for the flue pipe for ecoTEC plus 0020137851_02 13
4
Name Art. no. Elements
Elbow 30° for external wall laying
(2pcs),
concentric, interior PP, exterior stain-
less steel, Ø110/160
0020106406
Ø110
160
50
218
247
Ø160
Ø111
Roof duct 1000mm
with rain penetration collar,
concentric, Ø110/160
0020106408
50 357
1000
Ø160
Ø178
Ø110
Ø160
Ø110
Pitched roof tile 25°-50°
flexible,
black (RAL 9005)
red (RAL 8023) 0020106409 0020106410
289
25° - 50°
166
500 x 500
Flat roof penetration collar 0020106411 Ø 171
Ø 447
130
4.3 Description of elements (continued on next page)

System overview of concentric system Ø110/160mm
14 Installation manual for the flue pipe for ecoTEC plus 0020137851_02
4
Name Art. no. Elements
Vertical roof duct
black, concentric, mounting bar,
length above roof approx. 0,6 m,
length below roof approx. 1,4 m
- Roof duct Ø110/160,
with slider
- Rafter mounting
- Cover plate
0020166853
Horizontal wall/roof duct
concentric, with elbow and wall col-
lars
0020166854
Connection to flue gas pipe, con-
centric, for laying on external wall
- Elbow conc., dia. 110/160, 87°
Vaillant white
- Wall duct, dia. 110/160,
0.5 m with external wall console,
dia. 110/160
- Cover plate, Ø160, stainless steel
- Cover plate, Ø160, steel
- Supply air supports, conc.,
Ø110/160
- Opening cover, Ø110/160
0020166855
4.3 Description of elements

System conditions
Installation manual for the flue pipe for ecoTEC plus 0020137851_02 15
5
5 System conditions
5.1 Maximum pipe lengths
Elements Art. no. ecoTEC plus
VU GB 806/5-5 VU GB 1006/5-5 VU GB 1206/5-5
Vertical
roof duct 0020166853 Max. concentric pipe length 24 m
plus 2 x 87° elbows 20 m plus 2 x 87° elbows 11 m plus 2 x 87° elbows
If additional diversions are arranged in the flue gas installation,
the maximum pipe length is reduced as follows:
- By 1.5 m for each 87° elbow
- By 1.0 m for each 45° elbow
Horizontal wall/roof
duct 0020166854 Max. concentric pipe length 22 m
plus 1 x 87° elbow 18 m plus 1 x 87° elbow 9 m plus 1 x 87° elbow
If additional diversions are arranged in the flue gas installation,
the maximum pipe length is reduced as follows:
- By 1.5 m for each 87° elbow
- By 1.0 m for each 45° elbow
Connection to air/flue
gas system (LAS) 0020106380 0020106376 Max. concentric pipe length (horizontal
section)
4.0 m
plus 3 x 87° elbows 4.0 m plus 3 x 87° elbows 4.0 m plus 3 x 87° elbows
The chimney sweep approvals must be observed.
The dimensions of the chimney must comply with the manufacturer's
specifications.
Connection to flue
gas pipe on the exter-
nal wall
0020166855 Max. concentric pipe
length up to air intake 3 m plus 3 x 87° elbows
and support elbow
3 m
plus 1 x 87° elbow and
support elbow
2 m
plus 1 x 87° elbow and
support elbow
If additional extensions/diversions are arranged in the concentric part
of the flue gas installation, the maximum length of the flue gas pipe on
the external wall is reduced as follows:
- By 5.3 m for each 87° elbow
- By 3.2 m for each 45° elbow
- By 3.2 m for each 1 m extension
max. pipe length on
the external wall 50 m 50 m 29 m
If additional diversions are arranged in the flue gas pipe on the external
wall, the maximum length is reduced as follows:
- By 1 m for each 87° elbow
- By 0.5 m for each 45° elbow
5.1 Maximum pipe lengths ecoTEC plus
(continued on next page)

System conditions
16 Installation manual for the flue pipe for ecoTEC plus 0020137851_02
5
5.2 Performance features of the flue pipes from
Vaillant for condensing units
The air/flue gas systems from Vaillant demonstrate the fol-
lowing performance features:
Performance feature Description
Temperature resistance: Adapted to the maximum flue gas
temperature of the unit
Leak-tightness: Adapted to the unit for use in build-
ings and outdoors
Condensate resistance: Yes, for gas and oil
Corrosion resistance: Adapted to the gas and oil condens-
ing boiler
Clearance from combusti-
ble materials:
- Concentric flue gas pipe:
No clearance required
- Non-concentric flue gas pipe: 5 cm
Installation site: In accordance with the installation
instructions
Resistance to fire: Normal level of flame resistance (in accordance with EN 13501-1
ClassE)
Fire resistance time:
No, the external pipes of the concen-
tric system are not flammable. A
required fire resistance time is pro-
vided by shafts within the building.
5.2 Performance features
5.3 Requirements for the shaft for the flue pipe
Flue pipes from Vaillant do not have any fire resistance
(direction of operation from the outside to the inside).
If the flue pipe is guided through parts of a building that
require a level of fire resistance, a shaft must be fitted. The
shaft must ensure the fire resistance (direction of operation
from the outside to the inside) that is required for the build-
ing parts through which the flue gas installation is guided.
The required fire resistance must demonstrate a suitable
classification (brick partition and heat insulation) and be
sufficient for the building's requirements.
Observe the national ordinances, regulations and standards.
An existing chimney that was used for the flue gas evacua-
tion usually meets these requirements and can be used as a
shaft for the flue pipe.
The gas tightness of the shaft must comply with the test
pressure class N2 in accordance with EN 1443.
An existing chimney that was used for the flue gas evacua-
tion usually meets these requirements and can be used as a
shaft for the air guiding.
If the shaft is used to supply combustion air, this must be
designed and, in particular, insulated in such a way that no
moisture (caused by the cooling of the shaft by cold com-
bustion air penetrating from the outside) can penetrate the
exterior of the shaft.
An existing chimney that was used for the flue gas evacua-
tion usually meets these requirements and can be used as a
shaft for the air guiding without the need for additional
heat insulation.
5.4 Location of the opening
Align the opening of the flue gas installation in such a way
that ensures a secure outward flow and distribution of the
flue gases and prevents these gases from re-entering the
building through openings (windows, air intake openings
and balconies).
The location of the flue gas installation opening must com-
ply with the relevant applicable international, national and/
or local regulations.
5.5 Disposing of condensate
When disposing of the condensate into the public waste-
water system, observe the local regulations.
Local regulations may stipulate the minimum quality of any
condensate that may enter the waste-water system, for
example, through using a condensate neutraliser.
Only use corrosion-resistant piping material for removing
condensate.
5.6 Route of the flue pipe in the building
The route of the flue pipe should correspond to the short-
est and the most direct distance between the unit and the
flue gas installation opening, and it should run as straight
as possible. Do not arrange several diversions immediately
after each other.
Lay the flue pipe separately from the drinking water pipes.
As a result of standards relating to the hygiene of drinking
water, water pipes must be protected against impermissible
heating.
The entire length of the flue gas route must be inspected
and, if required, cleaned.
It must be possible to remove the flue pipe again with a
minimal amount of effort (no time-consuming mortising
work in the living area, but screwed-in cladding instead). If
they are arranged in shafts, they are usually easy to
remove.

Installation of the vertical roof duct
Installation manual for the flue pipe for ecoTEC plus 0020137851_02 17
6
6 Installation of the vertical roof duct
6.1 Installation instructions
iYou can also use the roof ducts of the external
wall system (stainless steel).
bCaution.
Risk of damage to the unit.
Very damp air escapes from the channel
vents. This can condense in the air pipe and
cause damage to the unit.
>Observe the requirements for minimum
clearances in (¬Fig. 6.1).
1 m
1 m
3 m
H 0
6.1 Installation site of the roof duct
6.2 Installing the roof duct
6.2.1 Black roof duct
1
2
3
4
5
6
1
3
4
6.2 Installing the roof duct
iThe installation is described using an example of
a pitched roof. For a flat roof, use the flat roof
penetration collar (6) instead of the flat roof
penetration collar (2).
>Insert the universal tile (2) in the roof.
>Insert the top part of the tile for vertical alignment of
the roof duct.
>Insert the vertical roof duct (1) into the pitched roof tile
(2) or the flat roof penetration collar from above. The
rain penetration collar and the top part of the tile must
form a rainproof seal.
>Align the roof duct vertically and secure the clamp (3) to
a rafter or to the ceiling.
>Fill the gap between the roof duct and the roof or ceiling
construction with insulating material.
>Screw the rosette pipe trim (vapour barrier) (4) to the
ceiling. For a better seal, silicone may be used between
the flange and the ceiling.

Installation of the vertical roof duct
18 Installation manual for the flue pipe for ecoTEC plus 0020137851_02
6
You can shorten the roof duct if necessary.
iAlways shorten the interior and exterior pipes by
an equal amount.
The slider (5) facilitates a simple connection between the
roof duct and unit connection. The slider has a maximum
usable length of 500mm. This does not require shortening,
because it slides telescopically into the roof duct.
>Insert the slider into the roof duct.
>If necessary, shorten the flue pipe
>Place the flue pipe and the sleeve on the flue pipe of the
roof duct.
>Slide the flue pipes into the roof duct.
>Insert the flue pipes into the equipment connection piece
from above.
>Remove the slider from the roof duct.
>Insert the slider into the sleeve of the equipment con-
nection piece.
>If necessary, use concentric extensions and diversions.
>Secure all connecting points with a safety screw as
described in ¬section 10.
6.2.2 Stainless steel roof duct
1
2
4
3
5
6.3 Stainless steel roof duct
Key
1 Roof duct
2 Fastening clamp
3 External pipe of the roof duct
4 Internal pipe of the roof duct
5 Connecting sleeve
In order to shorten the roof duct, you must first remove the
connecting sleeve.
>Pull the connecting sleeve (5) from the external pipe (3).
The connecting sleeve is no longer required.
>Shorten the external pipe and flue pipe by an equal dis-
tance.
>Place the roof duct on the pitched roof tile or flat roof
penetration collar.
>Fit the air intake piece and the opening cover, along with
the required clamps, to the upper end of the roof duct.
For the air intake piece and opening cover, you must use
the article number 0020106375.
>Attach the fastening clamps of the roof duct to the raft-
ers or to the ceiling.
iFor the area above the roof, refer to ¬section8
(roof duct in external wall system).
>Continue as described in ¬section 6.2.1 (black roof
duct).

Installing the concentric connection to the air/flue gas system (LAS)
Installation manual for the flue pipe for ecoTEC plus 0020137851_02 19
7
7 Installing the concentric connection
to the air/flue gas system (LAS)
You require at least:
– The 87° elbow, dia. 110/160 mm
(article number 0020106380)
– An extension Ø110/160 mm (article number 0020106385)
aDanger!
Risk of poisoning due to escaping flue
gas!
Standing condensate can damage the seals
of the flue gas pipe.
>Lay the horizontal flue pipe with a down-
ward gradient of 3° inwards. 3° corre-
sponds to a downward gradient of
approx. 50 mm per metre of pipe length.
aDanger!
Risk of poisoning due to escaping flue
gas!
In the event of overpressure in the vertical
part of the flue gas pipe, flue gas may flow
into a unit that is not operating. The units
are not suitable for this mode of operation
and are not checked.
>Provide evidence of the functional relia-
bility of the vertical flue gas pipe in
accordance with EN 13384 using the
specifications for flue gas temperature
and flue gas mass rate from the installa-
tion instructions for the unit.
aDanger!
Risk of injury due to damage to the
structural integrity.
The static function and fire-protective func-
tion of the shaft wall may be impaired and
may lead to a hazard to persons.
>Do not attach any fastenings using bolts,
rawl plugs, etc. directly to the shaft wall
of the air/flue gas system.
>Do not attach fastenings to primary wall-
ing or sideways to the wall.
>Observe the specifications provided by
the manufacturer of the air/flue gas
system.
B
A
7.1 Shorten the flue pipe to the length required and insert the
air pipe
Key
A Air
B Flue gas
>On the air/flue gas system, establish a connection in
accordance with the dimensions in ¬section 3. These
dimensions allow for the lateral installation of the unit or
installation directly on the primary walling.
Ceramic air/flue gas systems are usually equipped with rub-
ber sealing sleeves and have a pipe stop on the air-side
connection.
>Separate the sleeve on the flue pipe so that you can
slide the flue pipe into the seal.
>Insert the air pipe into the sleeve of the air/flue gas sys-
tem.
>Insert the flue pipe into the flue seal of the air/flue gas
system. When fitting further elements, prevent the flue
pipe from sliding into the flue gas duct.
Metal air/flue gas systems feature cylindrical supports on
the flue-gas-side. In this case, insert the concentric flue
pipe with sleeve.
iFor air/flue gas system shafts that have no
sleeves, you must secure the air pipe using mor-
tar and seal the shaft.
>If applicable, install additional extensions and elbows
starting from the wall and working towards the unit.
>Attach one fastening clamp for each extension.
>Finally, insert the elbow of the flue gas pipe into the flue
gas connection of the unit.
>Connect all connecting points of the air pipes using a
safety screw as described in ¬section 10.

Installing the flue gas pipe on the external wall
20 Installation manual for the flue pipe for ecoTEC plus 0020137851_02
8
8 Installing the flue gas pipe on the
external wall
8.1 System diagram
1
3
4
5
6
7
8
9
10
11
12
2
13
14
8.1 System diagram of the flue gas pipe
Key
1 Opening piece
2 Clamp
3 Outer extension
4 Roof duct
5 Pitched roof tile
6 Fastening clamp
7 Extension
8 Pipe bracket
9 Inspection element (Not required in all countries)
10 Air intake piece
11 Support elbow
12 Support console
13 Internal extension
14 Inspection elbow (Not required in all countries)
8.2 Static dimensions
A
D
C
B
8.2 Static dimensions
Key
A: Max. 50 m (max. vertical height above the support console)
B: Max. 2 m (distance between the pipe brackets)
C: Max. 2 m (distance between the two upper pipe brackets)
D: Max. 1.5 m (max. height above the last pipe bracket)
The dimension Aspecifies the maximum height of the flue
gas pipe above the support console.
If dimension A is exceeded, the load-bearing capacity of the
console is exceeded by the vertical weight.
To ensure that any wind forces can be safely absorbed,
dimension Bmust not be exceeded.
To ensure that any wind forces can be safely absorbed,
dimension Cmust not be exceeded.
Dimension Dspecifies the maximum height above the high-
est pipe bracket that cannot be exceeded due to wind
forces.