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Cosmo RCH
Cosmo Tunnel RCH
Installation manual
DRU-671866-EN-US-1122-8
G20/G25/G25.3 Natural gas
EN
959.077.04.EN
Scan this QR-Code
for DRU Video Assist.
English
INSTALLATION MANUAL
1. Introduction
2. CE declaration
3. SAFETY
3.1 General
3.2 Regulations
3.3 Precautions / safety instructions at installation
3.4 Principle of ignition cycle
4. Removing the packaging
5. Installation
5.1 Type of gas
5.1.1 Reconstruction to different type of gas
5.2 Gas connection
5.3 Electric connection
5.4 Placing the appliance
5.5 Placing a built-in appliance
5.6 Placing the chimney breast
5.7 Placing the control hatch
5.8 Flue gas discharge system appliances open combustion
5.9 Flue gas discharge / combustion air supply system appliances closed combustion
5.10 Additional instructions
5.11 Construction frame
5.12 Glass panes
5.12.1 Removing the glass pane
5.12.2 Placing the glass pane
5.13 Adjustment of the appliance
5.13.1 Restrictor slide
5.14 Placing the wood set
5.14.1 Wood set
6. Control
6.1 Remote controls
6.2 Alternative controls
7. Final inspection
7.1 Gastightness
7.2 Gas pressure/line-pressure
7.3 Ignition main burner
7.4 Flame picture
8. Maintenance
8.1 Parts
9. Delivery
10. Malfunctions
Appendix 1 Malfunctions
Appendix 2 Tables
Appendix 3 Figures
Contents
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INSTALLATION MANUAL
1. Introduction
DRU, a manufacturer of gas-fired and electric stoves, develops and produces products that comply with the
highest quality, performance and safety requirements. The information in this installation manual will ensure the
appliance is installed in such a way that it will function safely and in a correct way.
Installation and maintenance of the appliance should be performed by a certified and competent professional
person, hereafter referred to as the installer. Read the installation manual prior to installing the appliance and
make sure the instructions contained therein are fully and carefully observed. If applicable, this also applies to the
installation manuals for the DRU PowerVent® and the DRU CM system.
The appliance is supplied with an installation manual and a user manual. The installation manual discusses the
installation of the appliance and the applicable instructions, includes the technical specifications of the appliance
and provides information about its maintenance and any failures that might occur and what might cause these
failures. The user manual contains all information that is relevant to the user in order to operate the appliance
properly and safely. After final delivery, both manuals should be handed over to the user.
Where installation instructions are not clear, national/local legislation should be observed.
The following symbols are used in the manuals to indicate important information:
Ø
Work to be performed
!Tip
Suggestions and recommendations
!Caution
You will need these instructions to prevent problems that might occur during installation and/or use.
!Caution
You need these instructions to prevent fire, personal injury or other serious damages.
After final delivery, the manuals should be handed over to the user.
2. EU/UKCA Declaration of conformity
This declaration of conformity is provided under the sole responsibility of DRU Verwarming, hereafter referred to
as DRU. DRU declares that company internal measures guarantee that appliances produced by DRU meet the
essential requirements and guidelines of the European regulation concerning gas-fired appliances and the
accompanying standards. This declaration loses its validity if changes are made to the appliance without written
permission from DRU. The instructions in the manuals must also be observed at all times. A copy of the EU test
certificate can be downloaded via www.druservice.com.
Product:
Type:
Product identification number:
EU test certificate:
Conformity assessment agency:
Regulations:
Directives:
Standards:
Gas-fired heating appliance
Cosmo RCH, Cosmo Tunnel RCH
0063BU3078
18GR0156/00
Kiwa Netherlands B.V. (0063)
Wilmersdorf 50
Postbus 137
7300 AC, Apeldoorn
(EU) 2016/426, (EU) 2015/1186, (EU) 2015/1188
2014/53/EU, 2014/35/EU, 2014/30/EU, 2009/125/EC
EN 613:2021, EN 60335-1:2012, EN 60335-1:2012/A2:2019,
EN 60335-1:2012/A11:2014, EN 60335-1:2012/A13:2017,
EN 60335-1:2012/A14:2019, EN 60335-2-102:2016
3
DRU Verwarming B.V.
Postbus 1021, 6920 BA Duiven
Ratio 8, 6921 RW Duiven
www.drufire.com
R.P. Zantinge Managing director
Duiven, 09-02-2018
English
INSTALLATION MANUAL
3. SAFETY
!Caution
• Observe the generally applicable regulations and precautions/safety instructions in this manual.
• Read this manual carefully to ensure the proper and safe installation of the appliance.
• Prior to starting the installation, check that the correct appliance has been delivered on the basis of Appendix
2, Table 2.
3.2 Regulations
Please install the appliance in accordance with the applicable national, local and constructional (installation)
regulations.
3.3 Safety instructions
!Caution
Carefully observe the following precautions/safety instructions:
• Installation and maintenance of the appliance should be performed by an installer.
• The appliance was designed for atmospheric and heating purposes. This means that all visible surfaces,
including the glass pane, can become hotter than 100°C. It is recommended to always place a guard grille in
front of the appliance when children, older people or persons with reduced physical, sensory or mental
capacities are in the same room as the appliance. If these vulnerable people are regularly present in the room
without supervision, a fixed guard should be made around the appliance.
• Keep combustible objects and/or materials outside the appliance's radiation range (see section 5).
• Do not cover the appliance and/or do not wrap it in an insulation blanket or any other material.
• Do not use the appliance when a pane is broken and/or cracked, until it has been replaced.
• Only use the flue gas discharge / combustion air supply system (concentric system) supplied by DRU.
!Caution
When installing the appliance, heed the following warnings:
• Do not make any changes to the appliance.
• Only use the accompanying set, such as the wood or pebble set, and place it exactly as described.
• Leave space around the ionisation pin and spark electrode and never place glow material around these pins.
• Place a gas tap in accordance with applicable regulations.
• Make sure there is no dirt in gas pipes and connections.
• Check the complete installation for gas tightness prior to commissioning.
• Do not ignite the appliance until it is fully installed in relation to the gas connections, discharge system and
electrical components.
!Caution
When installing a built-in appliance:
• Prevent the explosion hatch(es) on the top of the appliance (if present) from getting clogged and check that
they properly fit on the sealing surface, before the appliance is built in.
• Use non combustible and heat-resistant materials for the chimney breast, including the top of the chimney
breast and the material in the chimney breast, such as the floor under the appliance and the back wall against
which the appliance will be placed. For this you can use both special sheet material and stone-like materials.
• Take sufficient measures to prevent excessive temperatures of a wall behind the chimney breast, including
the materials and/or objects behind the wall.
• Take the minimum required internal dimensions of the chimney breast into account. These are for the benefit
of safety and for the prevention of excess heat accumulation in the chimney breast.
• Ventilate the chimney breast by means of ventilation holes (see section 5.6). These are essential for safety and
for the prevention of excess heat accumulation in the chimney breast.
• Use heat resistant electrical connectors.
• Place heat-resistant electrical wiring away from the appliance and as low as possible in the chimney breast.
This has to do with the temperature development in the chimney breast.
!Caution
When installing a free-standing appliance:
• Place the appliance at the indicated minimum distance from the back wall and side walls (see section 5).
3.4 Igniting the appliance
Igniting the appliance takes place as follows: the appliance is switched on by means of an ignition command. This
can be done by means of the provided remote control, the DRU Fire App (iOS and Android) or a home automation
system. The receiver in the appliance gets the signal to start the ignition process. The valves in the gas control are
switched on and a reduced amount of gas flows to the main burner. The ignition mechanism sparks for 15
seconds, as a result of which the main burner ignites.
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INSTALLATION MANUAL
In the case of a PowerVent® system, the module switches on after an ignition command, as a result of which the
fan of the system starts up. During starting up, a waiting time of 8 seconds applies. After this the appliance will
ignite as described above.
After ignition of the main burner (half the capacity), the ionization is measured to check for a correct and full
ignition of the burner. When no ionization is detected after 15 seconds, the ignition cycle is interrupted and the
appliance will enter into a failure condition.
When ionization is detected, the main burner will switch to full capacity. In case of an appliance with a switching
second burner, the gas valve is now opened to allow the second burner to ignite (shortly before ignition a click
sound can be heard). The appliance is now in manual mode, runs at full capacity and is now ready for operation.
The second burner can be switched on and off manually by means of the remote control and/or DRU Fire App.
After the second burner is switched on manually, the main burner first switches to full capacity to ensure a correct
ignition.
!Tip
The control unit of the appliance performs a safety check on the system every 24 hours. It is possible that this
check is performed while the appliance is in operation. In that case, the appliance will extinguish and ignite again.
Repetition at this particular time can be prevented by removing the plug from the socket and inserting it again at
a time when the appliance is rarely or never burning.
4. Unpacking
When unpacking the appliance, please proceed as follows:
Ø
Remove all packaging materials and dispose of them by means of the correct waste processing method.
!Caution
Keep plastic bags and packaging materials away from children.
Ø
Remove all supplied components in, on and/or at the appliance.
Ø
Remove the screws, if the appliance is attached to a platform or pallet.
Ø
Check the appliance and accessories for damages (during transport). In case of damage, contact your supplier.
!Caution
Never install a damaged appliance.
Ø
Use Appendix 2, Table 1 to check if all components have been delivered. Contact your supplier if this is not the
case.
!Tip
The glass panes are made of ceramic material, which means that minor irregularities in the surface cannot be
prevented. These are within the imposed quality standards.
5. Installation
The appliance control unit consists of the following components (Appendix 3, Fig. 38):
A: Distribution block; connection of the burners
B: Main valve; controls the gas supply to the main burner and valve second burner.
C: Valve second burner; switches the gas supply to the second burner (if applicable)
D: Controller (ESYS); controls the ignition procedure and checks for a safe operation
E: Receiver (DFGT); ensures the control of the appliance
P1: Pressure gauge nipple 1; burner pressure
P2: Pressure gauge nipple 2; line-pressure
G(IN): Gas connection; connection from the gas control to the gas network
5.1 Type of gas
The data plate indicates for which type of gas, gas pressure and for which country this appliance is intended.
The data plate is located on the appliance or can be attached to a chain. The data plate must remain attached to
the appliance by means of the chain at all times.
!Caution
Check that the appliance is suitable for the type of gas and the gas pressure used at the location.
5.1.1 Gas type conversion
A gas type conversion should always be performed by a recognised gas installer. Contact the DRU service
department to see what is possible.
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INSTALLATION MANUAL
5.2 Gas connection
This appliance is intended for use on a gas installation with a gas pressure regulator in the supply. In addition, a
gas tap should be installed in the gas pipe, in conformity with the applicable regulations.
!Caution
• Make sure the gas pipes and connections are free from dirt.
• No soldering work may be performed at the flexible gas hose(s).
For the gas connection (Appendix 3, Fig 38 (Gin)), the following requirements apply:
• Lay the gas pipe in such a way that no pressure loss can occur.
• The gas tap must be provided with the correct quality mark.
• The gas tap should be accessible at all times during and after installation.
5.2.1 Gas hose for gas outlet
If legally permitted, a gas hose for a gas outlet (according to EN14800) can be ordered with the appliance in
various lengths (consult DRU Service for this). The gas hose is mounted to the appliance at factory and has been
checked for leak-tightness.
!Caution
• The gas outlet should be accessible at all times during and after installation.
• The gas outlet may only be placed vertically (Appendix 3, Fig. 3).
• The gas outlet and gas hose may not be placed behind the appliance.
• The gas outlet should be placed next or under the appliance on the wall behind the appliance.
• Measured from the bottom of the adjustable foot holder, a maximum allowed placement height of 30 cm
shall apply (Appendix 3, Fig. 3).
• A minimum radius of 40mm must be observed in case of a bend in the gas hose (Appendix 3, Fig. 3).
• A minimum distance of 20mm must be observed between gas hose and appliance.
• The gas hose must be placed as low as possible in the chimney breast. Place it as far away from the burner as
possible.
• The input of the appliance control unit points towards the appliance. Due to the bend radius of the gas hose,
the chimney breast width becomes larger on the side of the control hatch.
5.3 Electrical connection
Ensure a 230 Volt earthed electrical connection. Place this connection in such a way that it is free from the
appliance. When using a chimney breast, the connection should be placed as low as possible, in connection with
the temperature development during use.
!Caution
Make sure the installation can be made free from voltage easily after installation, by disconnecting the plug or
using a 2-pole switch placed by an installer in accordance with normal regulations.
!Caution
• Protect the appliance control unit and accompanying electrical components against building dust and
building moisture.
• When connecting the receiver and the control panel of the CM system, observe the instructions in the
provided installation manual.
5.3.1 Connection switch contact (Eco Glow)
(if applicable)
Connection (B) is used for the Eco Glow glow lighting (Appendix 3, Fig. 36 (B)). When the appliance is not made
with Eco Glow glow lighting, this contact can be used for other purposes. It is a potential-free contact and may be
loaded to a maximum of 230V~ 1A (230W).
5.3.2 Switching/Dimmable power supply (Triac)
(if applicable)
With connection (C), it is possible, for example, to switch the lamps of DRU lux element or a ventilation system
(Appendix 3, Fig. 36 (C)). This can be done by means of the provided remote control or DRU Fire App. The App can
also be used to dim this contact. The power supply of this connection may only be loaded with up to 230V~ 0.35A
(80 Watt).
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INSTALLATION MANUAL
5.4 Placing the appliance
!Caution
• Place the appliance in front of a heat-resistant and non-combustible wall and on a heat-resistant and
non-combustible floor. The wall brackets on a built-in appliance ensure that the minimum distance to the
wall is maintained.
• Ensure there are no combustible objects or materials present in the fire's radiation range, within a distance of
500 mm, unless indicated otherwise.
• Place the concentric system in such a way that no fire hazard is ever created (also see section 5.8).
• Take sufficient measures to prevent temperatures of a possible wall behind the chimney breast, or the floor
under the chimney breast from becoming too high; including the materials and/or objects located there.
• Do not cover the appliance and/or do not wrap it in an insulation blanket or any other material.
• Make sure that the appliance to be installed has a stable position. Fasten possible extending legs with the
self-tapping screws.
!Caution
When installing a built-in appliance, always take the following into account:
• The minimum construction measurements according to Appendix 3, Fig. 1 and 2.
• The construction height of the appliance.
Ø
Provide a gas connection at the location. For details, see section 5.2.
Ø
Make a passage for the concentric system; for details, see section 5.8.3.
!Caution
Additional instructions for the appliance to be installed can be found from section 5.10.
5.5 Placing a built-in appliance (if applicable)
Not all built in DRU appliances are supplied with a control hatch.
!Caution
Built in appliances must be installed with the DRU control hatch. This is necessary to ensure a durable, safe and
proper operation. The DRU control hatch can be ordered separately. Exceptions are:
Appliances with supplied DRU guard cabinet. The DRU guard cabinet is intended for installation with a suspended
platform. If the appliance will be connected to the DRU PowerVent® system, the DRU control hatch has to be used
after all.
The gas control is mounted to the appliance. It must be taken out and placed in the control hatch at a later time.
For placing the gas control in the control hatch, see section 5.7.
Proceed as follows:
Ø
Loosen the bracket with the gas control by loosening the self-tapping screws and screw the self-tapping screws
back in the appliance.
Ø
Place the bracket with gas control, together with the wiring of the ignition/ionisation cable(s), the flexible gas
hose(s) and type plate with chain in the direction of the control hatch.
!Caution
The data plate should remain connected to the chain.
Ø
Set the height of the appliance using the adjustable feet.
Ø
Make the appliance level at the same time.
!Tip
The construction frame can be adjusted afterwards for most 2- or 3 sided appliances. This allows a good contact of
the construction frame with the chimney breast. Adjustment should take place before the appliance is built in.
After building in, adjustment is no longer possible. For 2- or 3-sided appliances that cannot be adjusted, we refer
to section 5.10 'Additional instructions'.
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INSTALLATION MANUAL
!Caution
Do not ignite the appliance before the gas, discharge and electric connections have been fully installed, first
observe the procedure described in chapter 7.3.
5.6 Placing the chimney breast (if applicable)
For the benefit of a good heat discharge, operation of the appliance and general safety, there should be sufficient
space around the appliance.
The chimney breast should be ventilated sufficiently by means of ventilation holes (incoming and outgoing).
These are essential for safety and for the prevention of excess heat accumulation in the chimney breast.
!Caution
When an appliance is built in the floor, please take into account the minimum distances from a combustible
floor. If applicable, additional information about this is provided from section 5.10 'Additional instructions'.
!Caution
• In case of the minimum width dimension, a centred placement of the appliance is presumed in order to
guarantee sufficient convection.
• Use non-combustible and heat-resistant materials for the chimney breast, including the top of the chimney
breast and the material in the chimney breast, including the back wall and floor.
• The appliance is not a support structure. Make sure the appliance does not have to bear the weight of the
chimney breast for example.
• The passage of the ventilation holes (outgoing), which are placed as high as possible, is stated in Appendix 2,
Table 2.
• If no control hatch is placed in the chimney breast, an air supply of at least 80 cm 2 should be attached as low
as possible. If there is, the control hatch will suffice as air supply.
!Caution
When placing the chimney breast, you should take the following into account (see Appendix 3, Fig. 2):
• Protection of components and pipes of the appliance control unit against building dust such as cement and
lime.
• A minimum 100 mm distance between the top of the ventilation hole (outgoing) and the ceiling of the room.
• The location for the control hatch: this must be placed as low as possible.
• The dimensions of the control hatch; see Placing the control hatch section 5.7.
• The location of the ventilation holes (V) (outgoing).
• The measurements of the glass pane, so that it can be placed/removed after placing the chimney breast.
• If possible, you should place decorative strips, frames, etc., after any required structural work has been
completed. Prevent the use of painter's tape. If this is not possible: use a good quality painter's tape and
remove it immediately after plastering or painting work.
!Tip
You should preferably apply the ventilation holes (outgoing) on both sides of the chimney breast. Use the DRU
ventilation elements.
Check the following issues, before the chimney breast is fully closed:
• Whether the discharge / concentric system is placed correctly.
• Whether the channels, fixing brackets and possible clip bindings, which cannot be reached after installation,
are fastened by means of self-tapping screws.
Ø
Do not plaster on or over the edges of the construction frame, because:
• The heat of the appliance could cause cracks.
• It will no longer be possible to remove/place the glass pane.
Ø
When using stone-like materials and/or plaster finishing, allow the chimney breast to dry for at least six weeks
prior to taking the appliance into operation in order to prevent cracks.
5.7 Placing the control hatch (if applicable)
The control hatch (also see paragraphs 5.5 and 5.6) is placed as low as possible in the chimney breast.
!Caution
• The bottom of the control hatch may not be placed higher in the appliance than the burner surface.
• Place control hatch and bracket with gas control indoors in a dry place only!
A number of components are placed in the control hatch, such as data plate, gas control and, if applicable, the
components belonging to the DRU PowerVent® system.
Place the control hatch as follows, see Appendix 3, Fig. 4 for details:
Ø
Make an opening in the chimney breast, as described in the manual for the control hatch.
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INSTALLATION MANUAL
!Tip
The opening in the chimney breast may be made horizontal and vertical.
Ø
Place the inner frame (A); unscrew bolts (D and F) for this.
!Caution
The inner frame should be placed in the correct way. Two positions are possible. Placing the inner frame with a
rotation of 180° is not allowed (see Appendix 3, fig. 4).
!Tip
• When the chimney breast is made of bricks, the inner frame can be built with bricks at the same time.
• In case of a different material, the inner frame can be glued or fastened with four countersunk screws.
Ø
Remove the bracket with the gas control (B) from the appliance and place these self-tapping screws back in the
appliance.
Ø
Attach the bracket with gas control to the inner frame (A). Proceed as follows:
• Unwind the cables. This will, amongst other things, prevent a poor operation of the ignition.
• Unwind the flexible gas pipe(s).
• Mount the bracket with the gas control to the inner frame (A). The slotted hole falls in allen screw (C); the hole
at the bottom falls over the head of allen screw (D).
• Fix the bracket with allen screw (C).
!Caution
• Avoid kinks in the pipes.
• Do not lay the cables of the ionisation and ignition pins along metal parts, wiring and other components.
Ø
Connect the gas pipe with gas tap (see section 5.2).
Ø
Bleed the gas pipe.
!Tip
If the gas tap is closed, the bracket with gas control can be easily removed by loosening the clamp coupling under
the gas control and loosening the allen screw (C) by a few turns. The bracket with the gas control can now be lifted
and removed towards the front out of the control hatch.
Ø
Connect the 230V mains voltage with protective earth using the correct type of plug. The other side of the power
cable can be easily connected to the universal 230V plug in the control hatch. Use this universal 230V plug to
disconnect the appliance from the power supply, if necessary.
!Caution
If the 230V power cable is damaged, replace it by a similar power cable or a power cable that is available from your
dealer.
Ø
Place the data plate in its intended clamp (G).
Ø
Mount the outer frame with door (E) to the inner frame using two allen screws (D and F).
!Tip
The outer frame can be placed in such a way that the door turns to the left or right.
!Caution
Always close the control hatch with the lock (H) because of the electricity behind the door (230V).
You can operate the lock with a fitting flat object.
5.8 Concentric system
5.8.1 General
The appliance is connected to a flue gas discharge / combustion air supply system delivered by DRU, hereafter
referred to as the concentric system. The diameter for this connection is indicated in appendix 2, table 2. The
passage to the outside can be created with a wall terminal (C11) or a roof terminal (C31). If necessary, an existing
chimney can be used (see section 5.8.4).
!Caution
• Only use the concentric system supplied by DRU. This system has been tested in combination with the
appliance. DRU cannot guarantee a proper and safe operation of other systems and does not accept any
responsibility or liability for this.
• Use a chimney set for the connection to the chimney, DRU will be able to supply it.
• DRU's concentric system is intended for indoor use and may therefore not be used outdoors, with the
exception of the sections intended for that purpose such as roof and wall terminals.
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INSTALLATION MANUAL
The concentric system is constructed from (the flue spigot of) the appliance.
If, due to constructional circumstances, the concentric system is placed first, it is possible to connect the appliance
by means of a telescopic pipe piece.
5.8.2 Construction of the concentric system
Depending on the configuration of the concentric system, the appliance must be further adjusted with a possible
restrictor slide and/or air inlet guide.
See Tables 4 and 6 for determining the correct adjustment and section 'Adjustment of the appliance' for the
method of working.
!Tip
My Flue Assist ist eine DRU-Webanwendung, mit der überprüft werden kann, ob ein beabsichtigtes konzentrisches
System zulässig ist, und die Ratschläge zum Einstellen des Geräts gibt. Besuchen Sie die DRU Service-Website für
My Flue Assist. Die Informationen aus dem Installationshandbuch sind immer führend.
The concentric system with wall or roof terminal has to comply with the following conditions:
• In appendix 2, table 4 or 5 you can find whether a concentric pipe should be connected and what the
minimum vertical length would have to be.
• Determine the permissibility of the required configuration.
When using a wall terminal (C11) the following applies:
• The total vertical pipe length, when using a wall terminal, may have a maximum length that can be found in
appendix 2, table 4.
• The minimum vertical pipe length, when using a wall terminal, can be found in appendix 2, table 4.
• The total horizontal pipe length, when using a wall terminal, may have a maximum length that can be found
in appendix 2, table 4 (excluding wall terminal; see appendix 3, fig. 5).
!Caution
In appendix 2, Table 4, 1 bend has been included in the concentric system. It is possible, however, to add extra
bends. For each additional bend, the maximum allowed horizontal length of the concentric system is reduced.
This is done as follows:
• An additional 90° bend shortens the maximum allowed length of the concentric system by 2 metres.
• An additional 45° bend shortens the maximum allowed length of the concentric system by 1 metre.
!Caution
At least 1 metre should always be placed on the appliance vertically, unless stated otherwise in the table.
When using a roof terminal (C31) the following applies:
• The construction of the chosen system, when using a roof terminal, must be permissible according to
Appendix 2, Table 5 (See the method of working described below).
The working method below indicates how the permissibility is determined of a concentric system when using a
roof terminal.
1) Count the number of 45° and 90° bends required (15° and 30° bends are also allowed).
2) Count the total number of whole metres of horizontal pipe length.
3) Count the total number of metres of vertical and/or sloping pipe length (roof terminal excluded).
4) In the first 2 columns of Table 5, look for the number of bends required and the total horizontal pipe length.
5) In the top row of Table 5, look for the required total vertical and/or sloping pipe length.
6) A box with a letter means that the chosen concentric system is permitted.
7) Use Table 6 to determine how the appliance should be adjusted.
5.8.3 Placing the concentric system
!Caution
• Maintain a distance of at least 50 mm between the outside of the concentric system and the walls and/or the
ceiling (see section 5.4). If the system is built in (for instance) a cove, it should be made with non combustible,
heat-resistant material all around it.
• Use heat-resistant insulation material when passing through combustible material.
• Create a terminal for the concentric system with the following diameters:
- The pipe diameter +25 mm for a passage through non combustible material (see Appendix 3, fig. 40).
- The pipe diameter +200 mm for a passage through combustible material. Insulate the surrounding free
space with at least 60 mm mineral wool (see Appendix 3, fig. 41).
• The rosette of the wall terminal is too small to seal the opening in case of passage through combustible
material. That is why a heat-resistant intermediate plate of sufficient size should first be mounted to the wall.
Then, the rosette is mounted on the intermediate sheet.
10
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