Dru Cosmo RCH User manual

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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

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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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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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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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!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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!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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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.
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The roof terminal can end in a sloping and a flat roof.
The roof terminal can be supplied with an adhesive plate for a flat roof or with a universally adjustable tile for a
sloping roof.
!Caution Some heat-resistant insulation materials contain volatile components that will spread an unpleasant smell for a
prolonged time; these are not suitable.
Place the concentric system as follows:
Ø Build the system up from (the flue spigot of) the appliance.
Ø Connect the concentric pipe pieces and, if necessary, the bend(s).
Ø On each connection, apply a clip binding with silicon sealing ring.
Ø Use a self-tapping screw to fix the clip binding to the pipe on locations that cannot be reached after installation.
Ø Attach the concentric system with sufficient fastening brackets, so that the weight is not resting on the appliance.
Observe the following;
• Place the first fastening bracket 0.5 metre from the appliance, at the most.
• Place a fastening bracket maximum 0.1 metre from each bend, if the bends are more than 0.25 metre away
from each other. If two bends are closer to one another than 0.25 metre, 1 fastening bracket between these
bends will be sufficient.
• At least every 1 metre, place a fastening bracket at slanted and horizontal sections.
• At least every 2 metres, place a fastening bracket at vertical sections.
Ø Fasten a roof terminal with anchor cables, if it protrudes more than 1,5 metres above the terminal.
Ø Determine the remaining length for the wall or roof terminal and cut it to size, make sure the correct insertion
length is maintained.
Ø Place the wall terminal with the (groove/folded) seam at the top.
Ø Attach the wall terminal from the outside by means of four screws.
!Caution When using the wall terminal, place the terminal with a downward slope of 1 cm / metre towards the outside, in
order to prevent rain water from raining in.
5.9 Connection to an existing chimney (C91)
The appliance can be connected to an existing chimney. A 100 mm diameter flexible SS pipe is placed in the
chimney for discharging flue gases. The surrounding space is used as combustion air supply.
For a ø200/130 mm appliance connection, the concentric system must be updated to a diameter of 150/100 mm,
following which it can be connected to an existing chimney flue.
The following requirements apply when connecting to an existing chimney:
• Only allowed when used in combination with the special DRU chimney set. The installation regulation is parat
of the delivery.
• The internal size should be at least 150 x 150 mm.
• The vertical length has a maximum of 12 meters.
• The total horizontal pipe length may have a maximum length that can be found in appendix 2, table 4.
• The existing chimney should be clean.
• The existing chimney should be tight.
For setting the appliance, the same conditions/instructions apply as for the concentric system described above.
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5.10 Additional instructions
!Tip Use the castors to roll the appliance to its location easily.
Prior to placement, the appliance should be removed from its pallet.
Proceed as follows (see appendix 3, fig. 28).:
Ø Place the appliance plus pallet on a pallet truck.
!Caution In order to move the pallet, you must place the pallet truck directly below the appliance (see appendix 3, fig. 28).
Ø Raise the pallet truck as high as possible in order to provide space to install the castors.
Ø Place the 4 castors as indicated (see appendix 3, fig. 28).
Ø Mount one of the supplied nuts in each castor.
Ø Remove the pallet truck from below the appliance.
Ø Remove the 8 screws that are screwed in the pallet.
Ø Remove the two boards at both sides of the pallet.
Ø It will now be possible to roll the appliance off the pallet.
Ø Roll the appliance to the desired location.
Ø Extend the 6 adjustable feet of the appliance.
Ø Remove the castors.
It is now possible to install the appliance.
5.11 Construction frame
The construction frame of the Cosmo RCH can be adapted from the “4S setting” to the “3S setting”
(see appendix 3, fig. 2 and 6). The 3S setting allows the bottom side of the pane to connect to the floor or the
platform.
!Caution When using the 3S construction frame, observe a minimum distance of 350 mm from combustible material (see
the red-shaded area in appendix 3, fig. 2 (3S)).
!Caution We are unable to provide further information on, or assume responsibility for the way in which floor covering or
other materials are affected by use of the fire (e.g. how a wooden floor may ‘work’). Regardless of whether the
minimum required distances from combustible floor covering or other materials are observed.
If the 3S setting is selected, the lower strip must be removed before the appliance is installed.
Proceed as follows (see appendix 3, fig. 6):
Ø Unscrew the Allen screws (M) using a 2 mm Allen key.
Ø Hold the strip and unscrew the self-tapping screws (O).
Ø Remove the strip.
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5.12 Glass pane
!Caution The glass pane must be removed/placed by two persons.
!Caution • Avoid damaging the glass panes when removing/placing them;
• avoid/remove fingerprints on the glass panes, as they will burn into the glass.
5.12.1 Removing the glass pane
When removing the glass pane, please observe the following steps (see appendix 3, fig. 7 up to 9):
Ø Loosen the bolt (T) in the lock bracket (U) by 3 turns (see appendix 3, fig. 7a (1)).
Ø Turn the lock bracket (U) to the left by a quarter turn. This will unlock the handle (X), by means of which the glass
pane can be opened.
!Caution Always prevent the glass pane from falling forwards!
Ø Pull the lever (X) down, using your index fingers. Press down the glass pane while the lever (X) is moved to the
right 180° and hold on to the glass pane! This will prevent the glass pane from falling forwards and getting
damaged (see appendix 3, fig. 7a (2 and 3)).
Ø Carefully pull the glass pane towards the front with the two handles located at the left and right top side of the
glass pane frame and then allow the glass pane to drop (see appendix 3, fig. 7b).
!Caution • The following actions should be performed by 2 persons.
• Prevent stresses on the glass pane by performing the following actions simultaneously on the left and right
side.
Ø Simultaneously loosen the left and right brackets (Y) that guide the glass pane and connect it to the appliance.
Push close the glass pane with 2 persons at both sides, to such an extent that the brackets (Y) can be lifted from
the guides (see appendix 3, fig. 8).
Ø Then, carefully remove the glass pane with 2 persons from the lower glass pane guides at both sides of the
appliance (see appendix 3, fig. 9).
5.12.2 Placing the glass pane
The glass pane is fitted by using the above procedure in reverse order (see appendix 3, fig. 7 up to 9).
!Caution Avoid/remove fingerprints on the glass pane, as they will burn into the glass.
Pay attention to the following when fitting the glass window:
!Caution Make sure the cams at the bottom on both sides of the glass pane frame are correctly placed in the guides at the
bottom of the combustion chamber by 2 persons (see appendix 3, fig. 9)!
!Caution Check whether the 2 “clips” (C) are still properly attached around the bottom of the glass pane before the glass
pane is closed, in order to prevent it from getting damaged.
!Caution First press the glass pane in its place at the upper corners and then hold the glass pane with 1 hand before sliding
the handle to the left again. Otherwise, the projections will not fall over the glass pane, as a result which it will not
close properly.
Ø Turn the lock bracket (U) back to its position and re-tighten the bolt (T).
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5.13 Adjustment of the appliance
The appliance has to be set in such a way that it works correctly in combination with the used discharge system.
For that purpose, it is possible to place a restrictor slide.
The conditions for using a wall terminal and roof terminal can be found in appendix 2,
tables 4, 5 and 6.
5.13.1 Restrictor slide
The restrictor slide (R) must be adjusted to the right position (see Appendix 3, fig. 10).
Proceed as follows:
!Caution The restrictor slide should be placed in the correct manner. Therefore, accurately observe the instructions in
Appendix 3, fig. 10.
Ø Loosen the 3 self-tapping screws by a few turns.
Ø Adjust the position of the restrictor in accordance with tables 4, 5 and 6.
In the restrictor slide, 4 of the 5 possible positions are indicated by means of the 4 cut out letters B up to E.
Ø Make sure that the point of the triangle belonging to the position that you want and the centre of the self-tapping
screw are exactly aligned.
Ø Now tighten the 3 self-tapping screws.
At position A, the restrictor slide should be fully removed from the combustion chamber.
Proceed as follows:
Ø Remove the 3 self-tapping screws of the restrictor slide from the combustion chamber (see appendix 3, fig. 10).
Ø Remove the restrictor slide (R).
Ø Screw back the self-tapping screws in the combustion chamber.
!Caution The self-tapping screws of the restrictor slide must have been screwed back in the combustion chamber.
!Tip If you are installing an appliance, whereby a wood set has to be placed, do not yet place back the glass pane.
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5.14 Placing the wood set
The appliance is supplied with a wood set.
!Caution • The figures do not always show the correct colours.
• Before placing the wood set in a Cosmo Tunnel RCH, first determine what is the front of the appliance. Make
sure the positions of the burners are exactly the same as indicated in figure 18 in appendix 3.
!Caution Strictly observe the following instructions to prevent unsafe situations.
Ø Only ever use the supplied wood set.
Ø Place the wood set exactly as described.
Ø Make sure the ionization pin and spark electrode and the surrounding space remain free
(see appendix 3, fig. 13 and 14).
Ø Make sure the slot between the burner and the vermiculite tray is kept free from objects.
Ø Make sure there is no vermiculite's dust on the burner.
5.14.1 Wood set
The wood set consists of vermiculite (see appendix 3, fig. 15), chips (see appendix 3, fig. 16) and a number of logs
(see appendix 3, fig. 17).
Ø Fill the burners with vermiculite; evenly spread the vermiculite (see appendix 3, fig. 18). The vermiculite may not
get higher than the edge of the burners.
!Caution You can influence the flame picture by moving the vermiculite, but the burner deck should remain covered with
vermiculite in order to avoid reducing the burner's life span.
Ø Check whether the insulating rope around the 2 central burners has been applied correctly
(see appendix 3, fig. 18).
Ø Check whether the ends of the insulating rope around the 2 central burners connect to each other
(see appendix 3, fig. 18).
Ø Identify logs A to H (see appendix 3, fig. 17).
!Tip Use the burn stains on the logs for identification.
Ø Place logs A and B, using the positioning cams (see appendix 3, fig. 19 and 20).
Ø Place log C, using the positioning pins (see appendix 3, fig. 21).
Ø Continue with central log D (see appendix 3, fig. 22).
!Caution • Always place central log D with 2 people, to prevent breakage;
• make sure that the space surrounding the central burners is distributed evenly, so that it is possible for
secondary air to flow around the burners;
• make sure the insulating rope around the central burners properly connects to log D.
!Tip Check the sealing by lighting it from below using a torch.
Ø Then place the cap on the left central burner. This cap will make sure that the flame will transfer smoothly
(see appendix 3. 23).
Ø Place log E (see appendix 3, fig. 24).
Ø Fill the vermiculite tray with chips; spread the chips evenly (see appendix 3, fig. 25).
Ø Identify logs F to H (see appendix 3, fig. 26).
!Caution The logs may not completely cover the burner pattern (see appendix 3, fig. 27), because:
• the main burner will not ignite properly; which could result in unsafe situations;
• the appliance will become filthy more quickly, as a result of soot;
• the flame picture will be affected.
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6. Control
The appliance is supplied with a remote control. In addition, it is possible to operate the appliance via the DRU Fire
App (available for iOS and Android). The user manual describes how the appliance is operated and how the remote
control and DRU Fire App work.
The appliance can be operated by means of a home automation system, see section 9.6.
For the installer, there is a service menu in the DRU Fire App (available for iOS and Android) in which data of the
appliance can be read (see section 6.1.3).
!Caution • Never ignite the appliance until it is fully installed in relation to the gas connections, discharge system and
electrical components.
• For an appliance made with the CM system, the regulations from the accompanying installation manual shall
also apply.
6.1 Operation
6.1.1 Remote control
Proceed as follows to make the remote control ready for use:
Ø Place two AA type batteries in the battery compartment of the remote control.
!Tip After placing the batteries, the version number of the software on the remote control is briefly shown on the
display.
Ø The display of the remote control now shows the message ‘BND’ and the Bluetooth symbol flashes. The remote
control is now ready to be coupled with the appliance. See the user manual if the remote control is not in ‘BND’
mode.
Ø Make the appliance free from voltage for a short while by removing the plug from the appliance control unit and
placing it back again.
!Tip After briefly making the appliance free from voltage, it is possible to couple the remote control with the appliance
for 5 minutes.
Ø Simultaneously press buttons 'ignition' and 'switch off' for 1 second.
Ø When coupling has been successful, the Bluetooth symbol lights up continuously and the current room
temperature and possibility of ignition are shown.
!Tip All functions of the remote control are explained in the user manual.
6.1.2 DRU Fire App - User
The DRU Fire App is available for both iOS and Android devices. Proceed as follows to couple the App with the
appliance:
!Tip There should always be an active coupling with the remote control before a device with App can be coupled with
the appliance.
Ø Download the App and make sure Bluetooth is activated on the device to be coupled.
Ø Open the DRU Fire App and follow the steps in the App.
!Tip For the thermostat function, the App will use the temperature sensor of the remote control. For a correct operation,
the remote control should be within range and in the same room as the appliance.
6.1.3 DRU Fire App – Service
In addition to normal operation options, the App also has a service menu for dealers and service technician, in
which the current status of the fire, the number of burning hours, the total number of error messages and the last
20 error messages can be read.
For this function you will need an account. For this, please contact DRU Customer Service.
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6.2 Wired home automation system
(if applicable)
In addition to operation by means of the remote control and DRU Fire App, the appliance can also be operated via
an external source. A wired home automation system can be directly connected to the receiver (Appendix 3, fig. 36
(D)).
Wired connection of a home automation system to the receiver takes place via a 0-10V direct current (Appendix 3,
fig. 37). By measuring the height of the voltage, the receiver knows to which position the appliance should be
switched. Graph 9.1 shows the relationship between voltage, the height of the flame and the number of burners (1
or 2).
!Caution A higher voltage than 10V will damage the receiver and is therefore not permitted.
Proceed as follows when connecting the home automation system to the receiver:
Ø Connect the 0-10VDC signal to connection (D), to which a black and yellow wire are connected
(Appendix 3, fig. 36 (D)).
!Caution The yellow wire is the + pole, the black wire is the - pole. Always connect ‘- to -‘ and ‘+ to +’ .
!TIp When the appliance is controlled by means of a home automation system, operation can be taken over by the
remote control and/or DRU Fire App at any time. After having been taken over by the remote control and/or App,
the home automation system should be reset to the zero position (0V) to allow operation of the appliance with
this system again.
7. Final inspection
In order to check whether the appliance is working properly and safely, you must perform the following
inspections before the appliance is put into operation.
7.1 Gastightness
!Caution All connections must be gastight. Check the connections for gastightness.
The gas control may be subjected to a maximum pressure of 50 mbar.
7.2 Gas pressure/line-pressure
The burner pressure is set at the factory; see data plate.
!Caution The line-pressure in house installations must be checked, because it can be wrong.
Ø Check the line-pressure; see Appendix 3, Fig 38 (P1) for the measuring nipple on the gas control.
• Contact the gas company if the line-pressure is too high.
• If the line-pressure is too low, check this at the gas meter. Contact the gas company if the line-pressure is also
too low at the gas meter.
7.3 Ignition main burner
For igniting the main burner, see the User Manual.
7.3.1 First ignition of the appliance after installation or adjustments
!Caution • For inspection purposes, ignite the appliance without a glass pane after installation or after having performed
work.
• If necessary, bleed the gas pipe.
Proceed as follows:
1. Remove the glass pane from the appliance (see section 5).
2. Ignite the appliance by means of the remote control or DRU Fire App. See section 3.4 for a step-by-step
description of the ignition process. (Go to step 11 if the burner continues to burn).
If the main burner does not ignite:
3. Reset the system by means of the remote control or DRU Fire App.
4. Repeat the ignition procedure until the main burner ignites successfully.
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!Caution If the appliance does not ignite after three failed attempts, it will enter into a hard lock-out for 30 minutes in order
to avoid a dangerous accumulation of gas. Make sure there is no more gas present in the appliance, before a new
ignition attempt is made.
Ø Consult the diagram with error messages when ignition fails after a number of attempts (see appendix 1:
Malfunctions).
Ø 5. Check the flame transfer on the main burner and check that the main burner continues to burn (go to step 11 if
the burner continues to burn).
If the main burner does NOT continue to burn:
6. Mount the glass pane.
7. Reset the system by pressing the buttons ‘Ignition’ and ‘switch off’ on the remote control simultaneously.
8. Now ignite the main burner and check that it continues to burn (go to step 11 if the burner continues to burn).
!Caution Limit the ignition attempts with mounted glass pane to a MAXIMUM of 1 ignition attempt. Make sure there is no
more gas present in the appliance, before a new ignition attempt is made.
If the main burner again does NOT continue to burn:
9. Switch off the appliance.
10. Consult the diagram with error messages (see appendix 1: Malfunctions) (Go to step 1 once the malfunction
has been resolved).
If the main burner DOES continue to burn:
11. Clean the glass pane after taking into operation for the first time, as described in the user manual. Then mount
the glass pane as described in section 8.
12. Repeat the ignition procedure a few times and perform checks as described in section 7.3.2.
13. The main burner should ignite smoothly at each attempt and should continue to burn.
14. Clean the glass pane after burning for the first time, as described in the user manual.
!Caution Wait 5 minutes before you re-ignite the appliance.
When stoking up for the first time, set the appliance at full position. When the appliance is stoked up, the flame
picture can be affected and an unpleasant smell may occur as volatile components evaporate. This process may
take a number of hours. Properly aerate the room and remove pets from the room (see section 3 of the User
Manual).
7.3.2 Igniting the burner(s)
!Caution • The ignition mechanism should ignite the main burner(s) within a few seconds and without popping.
• The main burner(s) must ignite smoothly, without popping and across the entire burner, and continue to
burn.
• The second burner (if applicable) should ignite smoothly across the entire length of the burner(s) and
continue to burn.
• If the appliance does not ignite after three failed attempts, it will enter into a hard lock-out for 30 minutes in
order to avoid a dangerous accumulation of gas. Make sure there is no more gas present in the appliance,
before a new ignition attempt is made. Ignite the appliance in the same way as the first ignition as described
in section 10.3.1.
Ø Check the correct ignition of the main burner from cold condition.
!Tip If sparks are observed between the electrodes of the ignition mechanism, the main burner should ignite within a
few seconds.
!Caution If NO sparks are determined, it is NOT permitted to continue the procedure. Consult the diagram with error
messages (appendix 1: Malfunctions).
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7.4 Flame picture
When stoking up for the first time, the flame picture is affected by the evaporation of, for instance, volatile
components from paint and other materials. In case of a cold start, the appliance should first reach the correct
temperature before the flame picture can be assessed.
!Tip The flame picture and a good flame transfer can only be assessed when the glass pane is mounted and/or closed.
Ø Check that the flame picture is in order.
Ø Consult the diagram with error messages (appendix 1: Malfunctions) if the flame picture is not correct.
8. Maintenance
Once per year, the appliance must be checked, cleaned and, if necessary, repaired by a competent installer in the
field of gas heating and electricity.
!Caution • Close the gas tap prior to starting maintenance work.
• Make the appliance free from voltage prior to starting maintenance work.
• Check the gas tightness after repair.
!Caution Under no circumstances may a stainless steel concentric system be cleaned (internally) with a steel brush or metal
sponge, for example. This will damage the oxide skin, as a result of which pit corrosion and/or system leakage
could occur.
Ø Clean the glass pane(s), if necessary.
!Caution • Only clean a glass pane once it has reached room temperature.
• Never use the appliance in case of a broken and/or cracked glass pane.
!Caution • Avoid damage to the glass pane(s).
• Avoid/remove fingerprints on the glass pane(s), as these can burn into the glass.
• Clean the glass pane(s) as described in the user manual.
• Regularly remove accumulated dirt, as it can burn into the glass.
Ø Inspect the flue gas discharge system.
!Caution You must always perform a final inspection.
Ø Perform the inspection as described in section 7.3.1.
8.1 Parts
Parts to be replaced are available via the DRU service website, dealer or importer.
9. Delivery
During delivery, familiarise the user with the appliance and its operation. The user manual explains all aspects that
are relevant to the user step by step, but this will never surpass a careful and personal instruction.
!Caution Tell the user to close the gas tap immediately and contact a competent installer in case of malfunctions/poor
operation. This to prevent unsafe situations.
Ø Provide the user with instructions for the appliance, remote control and DRU Fire App.
Ø Give the manuals to the user (all manuals should be stored near the appliance).
Ø Important aspects for the benefit of the user's safety that the user must be familiarised with:
• Opening and closing the control hatch
• The operation and location of the gas tap
• The location of the 230 Volt connection.
Ø Inform the user about the following:
• In order to prevent cracks, a chimney breast made of stone-like materials or finished with plaster, must dry at
least 6 weeks prior to taking the appliance into operation.
• Cleaning the glass pane(s).
• In case of delivery of an appliance equipped with a DRU CM system, the Installation Manual will contain
additional information about this.
10. Malfunctions
Appendix 1 provides an overview of malfunctions that might occur, their possible causes and remedies.
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