Dru Maestro 75XTU RCH User manual

Installation manualMaestro 75XTU RCHG20/G25/G25.3 (Natural gas), G30 (Butane) and G31 (Propane)EnglishStore this document in a safe place959.110.05.ENDRU-975797-EN-US-0721-1Scan this QR-Code forDRU Video Assist

Installation manual21. Step-by-step installation plan42. Introduction53. CE declaration54. Technical data65. SAFETY75.1 General75.2 Regulations75.3 Safety instructions76. Preparation86.1 Unpacking86.2 Type of gas86.2.1 Gas type conversion86.3 Gas connection86.3.1 Gas hose for gas connection96.4 Electric connection96.5 Components appliance control107 Installatie117.1 Placing the appliance117.2 Additional installation options137.2.1 Platform combined with lower decorative strip137.2.2 Platform connecting to the glass137.3 Concentric system177.3.1 General177.3.2 Roof terminal (C31)197.3.3 Wall terminal (C11)227.3.4 Connection to an existing chimney257.4 Placing the chimney breast257.5 Placing the control hatch288 Appliance308.1 Glass panes308.1.1 Removing the side pane308.1.2 Removing the front pane/rear pane.308.1.3 Placing the glass pane308.2 Setting the appliance328.2.1 Restrictor slide (R)328.2.2 Air inlet guide (L)338.3 Placing the wood set358.3.1 Wood set359. Control/operation459.1 Principle of ignition cycle469.2 Connecting the switch contact469.3 Connection extra power supply (max. 80W, 230VAC)479.4 Remote controls479.4.1 Black remote control for the user47Content

Installation manual39.4.2 Orange remote control for the installer479.5 Alternative operation479.5.1 Wired489.5.2 Wireless499.5.2.1 Connection via ‘modbus’ protocol499.5.2.2 Control via application4910. Final inspection5010.1 Gas tightness5010.2 Gas pressure/line-pressure5010.3 Ignition main burner5010.3.1 First ignition of the appliance after installation or adjustments5010.3.2 Procedure for igniting the main burner5110.4 Flame picture5111. Delivery5212. Maintenance5312.1 Parts53Appendix 1: Malfunctions54

1. Step-by-step installation planThe major steps of the installation are described below,Perform these steps and tick them once they have been performed correctly.3Carefully read the installation manual before installing the appliance.Installation manual4The appliance is now (after the above-mentioned steps) ready for use and the consumer is familiar with the possibilities for using the appliance.Check that the gas type and gas pressure is correct on the location where the appliance is placed.Check that the supplied parts are present (see table 6-1).Check the appliance for damages.Make sure that the total installation complies with the applicable national, local and architectural regulations.Make sure that there is a gas tap present that is always accessible and meets the legal regulations.Ensure that the placement meets the applicable requirements concerning fire safety.Make sure that the configuration of the concentric system with roof or wall duct corresponds with the imposed requirements (see section 7.3).Make sure the chimney breast meets the fire safety requirements. (see section 7.4).Make sure the chimney breast meets the minimum dimensions (see section 7.4).Make sure the chimney breast is sufficiently ventilated (see section 7.4).Make sure that the control hatch with gas control is placed correctly (see section 7.5).Make sure that the restrictor slide and air inlet guides are correctly adjusted (see section 8.2).Ensure a correctly placed wood, pebble set or broken glass set with accessories (see section 8.3).Make sure the remote control is made ready for use (see section 9.4).Check all gas connections for gas tightness (see section 10.1).Make sure that the appliance is first ignited without the glass pane (see section 10.3.1).Ensure a cleaned glass pane in accordance with the instruction, before the atmospheric fire is ignited with the glass pane for the first time (see chapter 12).Check the appliance with installed glass pane for a correct ignition and a correct flame transfer of the main burner(s) when igniting for the first time (see section 10/3/2).Familiarise the user with the appliance (see chapter 11).Check that the correct type of appliance has been delivered (see table 4-1).

2. IntroductionDRU, a manufacturer of gas-fired and electric stoves, develops and produces products that comply with the highest quality, performance and safety requirements. This appliance has a CE label, which means that it complies with the essential requirements of the European Gas Appliance Directive. The appliance is supplied with an installation manual and a user manual. Installation and maintenance of the appliance should be performed by a professional certified expert with a proven knowledge and demonstrable competence in this field.A professional expert takes all technical aspects such as heat output, gas connection and electricity into account, as well as the flue gas discharge requirements. The information in this installation manual will ensure the appliance is installed in such a way that it will function properly and safely. If the installation instruction is not clear, national/local regulations must be observed.This manual discusses the installation of the appliance and the regulations that apply to the installation. In addition, the appliance's technical data are shown and information is provided about maintenance, possible malfunctions that might occur and their possible causes.Fully and carefully read and use this installation manual, before installing the appliance. When using the DRU PowerVent® system or DRU CM system, the accompanying installation manual should also be read completely and carefully, before installation work begins.The following symbols are used in the manual to indicate important information:1Work to be performed2Suggestions and recommendations3You will need these instructions to prevent problems that might occur during installation and/or use.3You need these instructions to prevent fire, personal injury or other serious damages.After final delivery, the manuals should be handed over to the user.3. CE declarationDRU declares that company internal measures guarantee that appliances produced by DRU meet the essential requirements and guidelines of the 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 CE test certificate can be downloaded via www.druservice.com. Product:Type:Product identification number:Conformity assessment body:Regulations:Directives:Standards:Gas-fired heating applianceMaestro 75XTU RCH0063CS3117Kiwa Netherlands B.V. (0063)Wilmersdorf 50Postbus 1377300 AC, Apeldoorn(EU) 2016/426, (EU) 2015/11882014/35/EU, 2014/30/EUEN 613:2000, EN 613:2000/A1:2003, EN 613:2000/PrA2:2002EN 60335-1:2012, EN 60335-2-102:2016, EN 55014-1:2007EN 55014-2:2015, EN 61000-3-2:2014, EN 61000-3-3:2013, prEN613:2018Installation manual5DRU Verwarming B.V.Postbus 1021, NL-6920 BA DuivenRatio 8, NL-6921 RW Duivenwww.drufire.comR.P. Zantinge, Managing directorDuiven, 09-02-2018

4. Technical dataCheck the technical data based on the table below.Installation manualGastype:Indirect heating functionalityDirect heat outputIndirect heat outputSpace heating emissions NOxHeat outputNominal heat outputMinimum heat output (indicative)Technical dataNominal heat input (Hs)Nominal heat input (Hi)Consumption maxConsumption minBurner pressure maxBurner pressure minMain burner injector Low setting injectorEfficiency class (EN613)Useful efficiency (NCV)**Useful efficiency at nominal heat outputUseful efficiency at minimum heat output (indicative)Auxiliary electricity consumptionAt nominal heat outputAt nominal heat outputIn standby modePermanent pilot flame power requirementPilot flame power requirement (if applicable)Energy efficiencyEnergy efficiency indexEnergy efficiency classSymbol PnomPmin ηth,nomηth,min elmaxelminelSB PpilotEEIG25/G25.3*No8.4-83,48,41,211,910,7129022317,54,32x ø1,621x ø1,70A****193,384,10,02360,01250,0026 -93AG31No9,5-51,59,51,912,511,546710027,39,02x Ø1,101x Ø1,15A****193,692,10,02360,01250,0026 - 93AG20No8,8-92,88,81,212,411,2119124013,94,42x ø1,621x ø1,70A****193,384,20,02360,01250,0026 - 93AUnit kWkWmg/kWhinput (GCV) kWkW kWkWL/hL/hmbarmbarmmmm %% kWkWkWkWG30No11,1-61,711,12,214,413,14098727,28,92x Ø1,101x Ø1,15A****194,392,20,02360,01250,0026 -94AType of heat output / room temperature controlSingle stage heat output, no room temperature control Two or more manual stages, no room temperature controlWith mechanic thermostat room temperature controlWith electronic room temperature controlWith electronic room temperature control plus day timerWith electronic room temperature control plus week timerOther control optionsRoom temperature control, with presence detectionRoom temperature control, with open window detectionWith distance controle option NoNoNoYesYesYes Yes***Yes***YesMaestro 75XTU RCHBuilt-inClosed combustionC11, C31, C91, C12, C32*****I2E+ I2E I2EK I2ELL I2H I2L I3B/P, I3+ II2EK3B/P II2H3+ II2H3B/P II2E+3+ II2E+3B/P Bio Prop. Bio Meth.200/130DRU LAS ES-I 200/130, DRU LAS ES-E 200/150/100,DRU LAS ES-I 150/100, DRU PV-I 100/60Separated ignition / ionization plugsYes150°C700 mm / 500 mmV-in: 80 cm2 (Eco Glow; 2x 80 cm2) /V-out: 200 cm2* This appliance is suitable for G25.3 with the composition according NTA 8837. ** System efficiency. *** To be used by means of home automation. **** Adjusting screw. *****Categories C12 and C32 only in combination with DRU PV-1 100/60 (PowerVent®).Model identifier(s)Type of applianceCombustionTypeCategorieConcentric appliance connectionApplicable concentric systemsFlame protection versionPressure equalisationMax. temp. outer tube concentric systemRadiation range safe distance (front/side)Ventilation hole chimney breast Table 4-1: Technical data6

5. SAFETY5.1 General3-Observe the generally applicable regulations and precautions/safety instructions in this manual.-First check that the technical execution of the appliance to be installed is correct (see table 4-1).-Read this manual carefully to ensure the proper and safe installation of the appliance.-Observe the regulations/instructions in this manual.5.2 RegulationsPlease install the appliance in accordance with the applicable national, local and constructional (installation) regulations.5.3 Safety instructionsCarefully observe the following precautions/safety instructions:3The appliance may only be installed and maintained by recognised installers who are skilled in the field of gas heating and electricity.3Do not make any changes to the appliance.3When installing a built-in appliance:-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 sheet material and stone-like materials.-Take sufficient measures to prevent temperatures of a wall behind the chimney breast becoming too high, 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.-Vent the chimney breast by means of the ventilation holes (see table 4-1). These are essential for ensuring 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.-Only use the flue gas discharge / combustion air supply system (concentric system) supplied by DRU.3When installing a free-standing appliance: place the appliance at the indicated minimum distance from the back wall, as indicated further down in the text.3Do not cover the appliance and/or do not wrap it in an insulation blanket or any other material.3Keep combustible objects and/or materials outside the appliance's radiation range (see table 4-1).3Only use the accompanying set, such as the wood or pebble set, and place it exactly as described.3Leave space around the ionisation pin and spark electrode and never place glow material around these pins.3Make sure there is no dirt in gas pipes and connections.3Place a gas tap in accordance with applicable regulations.3Check the complete installation for gas tightness prior to commissioning.3Prevent 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.3Do not ignite the appliance until it is fully installed when it comes to the gas connections, discharge system and electrical components.3Do not use the appliance when a pane is broken and/or cracked, until it has been replaced.3The appliance was designed for atmospheric and heating purposes. This means that all visible surfaces, including the glass pane, can become hotter than 100C°. It is recommended to always place a protective grating in front of the appliance when there are children, elderly people or handicapped persons in the same room as the appliance.If it is possible that vulnerable people are regularly present in the room with no supervision, a fixed guard should be mounted around the appliance.Installation manual7

6. Preparation6.1 UnpackingNote the following items when removing the packaging:1Remove all packaging materials.1Remove all supplied components in, on and/or at the appliance.1Check the appliance and accessories for damages (during transport).1If necessary, contact your supplier.1Never install an appliance that is damaged!1Remove any screws that are used to fix the appliance to a platform or pallet.3The glass pane(s) is/are made of a ceramic material. Very small irregularities in the glass panes cannot be avoided, but are within the required quality standards.3Keep plastic bags away from children.Table 6-1 indicates which components should be available after removing the packaging.1Contact the supplier if you find that not all components have been supplied.1Packaging must be disposed of in accordance with the regulations.Installation manual86.2 Type of gasThe data plate indicates for which type of gas, gas pressure and for which country this appliance is intended.The data plate can be found on the appliance or can be attached to a chain to which it should remain attached.3Check whether the appliance is suitable for the type of gas and the gas pressure used at the location.6.2.1 Gas type conversionIn order to convert this appliance to a different type of gas, please contact DRU's service department and ask for the possibilities. The conversion should be performed by a recognised gas installer.6.3 Gas connectionPlace a gas tap in the gas pipe in accordance with the applicable regulations. The gas connection on the gas control islocated next to the receiver (fig. 6-2 (Gin)).3-Make sure there is no dirt in the gas pipes and connections.-No soldering may take place at the flexible gas hose(s), as this could cause leaks.The following requirements apply to the gas connection:-Use a gas pipe with the correct dimensions, so that no pressure loss can occur.-The gas tap must be approved (in the EU this will be the CE mark).-You should always be able to reach the gas tap.Table 6-1: Parts included with the deliveryPartInstallation manualUser manualWood set (including: chips, vermiculite and ash)Glowing Embers set (if applicable)Glow materialRestrictor slide (R1 + R2)Remote controlMains leadControl hatchBack-up self-tapping screws for benefit of glass pane assemblyKey boltsHexagonal nut M8Washer M8Compression fitting 15 mm x G3/8"Socket spanner 8 mmSuction cupAmount1x1x1x1x1x1x1x1x1xnx2x2x2x1x1x1x

Installation manual96.3.1 Gas hose for gas connectionIf legally permitted, a gas hose for a gas socket (in accordance with EN14800) can be ordered for the appliance. (Please consult DRU service.). The gas hose is mounted to the appliance and has been checked for leak-tightness. This gas hose is available in different lengths.3Take the following into account when installing the gas connection and the appliance (see fig. 6-1):-The gas connection must always be accessible to be able to shut off the gas supply.-The gas connection may only be mounted vertically, so that the gas hose can be connected vertically at the bottom.-The gas connection is permitted in a zone (blue hatched area in fig. 6-1). To the left and right of the appliance to a height of 30 cm above the bottom side of the appliance (the bottom side is the end of the adjustable feet holder, without the feet). Under the appliance in the area between the legs.-The gas connection and gas hose should not be placed behind the appliance.-The gas hose may not get above the bottom side of the appliance (the bottom side is the end of the foot without the adjustable feet)-The minimum bend radius of the hose is 40 mm.-The hose should be placed as low as possible, must have a minimum distance from the appliance of 20 mm and, if possible, should not be placed under the burner.-The entrance of the gas control in which the hose is mounted faces the appliance. Due to the bend radius, the chimney breast width becomes larger on the side of the control hatch. The minimal depth of the control hatch is 270 mm.6.4 Electric connectionIn case of an electrical connection of 230 Volts, always provide sufficient earthing. Place this electrical connection away from the appliance, as low as possible in the chimney breast. Make sure the electrical connection is within reach. This has to do with the temperature development in the chimney breast.3Make sure that it is easy to disconnect the appliance from the power supply after installation: By disconnecting the plug or by means of a 2-core switch installed by a recognised installer in accordance with current regulations.3-Protect the gas control and electric components, hereafter referred to as the gas control, against building dust and moisture!-In the case of appliances made with the CM system®, observe the instructions in the supplied manual for connecting the receiver and control panel.
300 mm
≥ Ø40 mm
≥ 20 mm
38C-2605-3
6-1

Installation manual106.5 Components appliance controlThis section states the components that are used to control the appliance (see fig. 6-2).Legend:A = Gas control; controls the gas to the burnersB = Receiver; communicates with the transmitterC = Processor (ESYS); controls the gas controlD = Distribution block; connection of the burnersE = Valve 2nd burner; opens and closes the gas supply to the 2nd burner (if applicable)P1 = Pressure gauge nipple 1; line-pressureP2 = Pressure gauge nipple 2; burner pressureG (IN) = Gas connection; connection from the gas control to the gas network
D
A
C
B
G(in)
E
P2
P1
6-2

Installation manual117 Installatie7.1 Placing the applianceSeparate sub-sections describe different ways of placing the appliance. The general description below for placing the appliance applies to all these sub-sections:1Place the appliance where it will be installed and observe the following:3-The construction dimensions of the appliance (see fig. 7-2).-The minimum chimney breast dimensions (see section 7.4).-The length of the cables and pipes (see section 7.4).-Place the appliance in front of a heat-resistant and non combustible wall and on a heat-resistant and non-flammable floor. The wall brackets on a built-in appliance ensure that the minimum distance to the wall is maintained.-Take sufficient measures to prevent temperatures of a possible wall behind the chimney breast becoming too high, including the materials and/or objects behind the wall.-Make sure there are no combustible objects or materials within the radiation range (see fig. 7-6) of the fire.-Place the concentric system in such a way that no fire hazard can ever be created (see section 7.3).-Do not cover the appliance and/or do not wrap it in an insulation blanket or any other material.1Set the height of the appliance using the adjustable feet and level the appliance.1Loosen the bracket with the gas control by loosening the self-tapping screws and screw the self-tapping screws back in the appliance.1Place the bracket with the gas control, together with the wiring of the ignition/ionization cable(s), the flexible gas hose(s) and the data plate with chain in the direction of the control hatch (see section 7.5).3-Do not lay the cables of the ionisation and ignition pins along metal parts, wiring and other components.-The data plate must remain attached to the appliance with the chain.3-Make sure that the appliance to be installed has a stable position. Fasten possible extending legs with the self-tapping screws.-Anchor appliance to the wall using the mounting facility. (see Fig. 7-2 (B)).

Installation manual12
750
550
50
915 (+20)
130
200
827 30
545
1156,5
162
B
400
558
158 (+20)
485
38C-2471/0
Maestro 75 XTU RCH
7-2

Installation manual137.2 Additional installation optionsThe appliance can be placed with a platform. This can be done in combination with the lower decorative strip or by placing the platform against the glass. The accompanying chimney breast can be used with or without a false wall (see fig. 7-3).3-Use non combustible and heat-resistant material (see fig. 7-6).-Do not allow the weight of the platform to rest on the appliance, provide proper support of the platform, separate from the appliance, by using the mounting kit. This mounting kit is available separately.7.2.1 Platform combined with lower decorative strip(see fig. 7-3 (A and C))1Create a recess in the platform, in which the appliance will be placed. If a false wall is used, the recess will be less deep.1Adapt the height of the appliance and the platform support in relation to one another, so that the top side of the platform connects to the bottom side of the lower decorative strip.7.2.2 Platform connecting to the glass(see fig. 7-3 (B and D))1Create a recess in the platform, in which the appliance will be placed. If a false wall is used, the recess will be less deep. The maximum material thickness is 30 mm.1Remove the lower decorative strip by sliding it from the appliance and taking it out. It will not be placed back.1Remove the centring cam at the bottom of the decorative strip by cutting into it at the front and breaking it off. Make sure the bottom side of the decorative strip remains flat and resistant to corrosion.1Loosen the nuts of the adjustable profiles by a few turns and adjust the profiles at the correct height. The height depends on the material thickness of the platform. Indicators have been made for a material thickness of 20 mm and 30 mm. Re-tighten the nuts.1Adapt the height of the appliance and the platform support in relation to one another, so that the bottom side of the platform connects to the adjustable profiles.3-Do not allow the weight of the platform to rest on the appliance and the adjustable profile.-Make sure there is sufficient room for placing and removing the vertical decorative strip. We recommend a 1 mm play between the platform and the bottom side of the vertical decorative strip.

Installation manual14
510
810
410
759
510
810
≥1138
490
410
759
≥1087
A
B
C
D
7-3

Installation manual15
1
3
2
38C-2056/1
7-4

Installation manual16

Installation manual177.3 Concentric system7.3.1 GeneralThe appliance is connected to a flue gas discharge / combustion air supply system delivered by DRU, hereafter referred to as the concentric system. DRU has different concentric systems in its range.In the case of a concentric system, the inner tube is used as flue gas discharge. The combustion air is supplied by the outer tube. As a result, the latter always has a relatively low temperature. For the maximum temperature of the outer tube, see the technical data in table 4-1. The concentric system has been tested in combination with the appliance. Other concentric systems are not permitted.See the table below for the different concentric systems of DRU and their application:SystemDRU LAS AG-I 150/100DRU LAS ES-I 150/100DRU LAS ES-I 200/130DRU LAS ES-E 200/150/100DRU PV-I 100/60Permittedfor thisappliance.NoYesYesYesYesRemarksAlu-galva tubes for use inside the building*.Diameter Ø150/100 mm.Cannot be combined with the SS systems.SS tubes for use inside the building*.Diameter Ø150/100 mm.Using an SS adapter, it is possible to construct further with theinsulated LAS ES-E 200/150/100 system.SS tubes for use inside the building*.Diameter Ø 200/130.Using an SS adapter, if permitted, it is possible to construct further with LAS-ES-I 150/100.Insulated SS tubes.Discharge diameter Ø150/100.External diameter Ø 200 mm.Intended for use inside or outside building for placement in, for example, timber frame construction, execute with 0 mm distance along combustible material etc. It is not possible to continue building with an SS adapter with LAS ES-I 150/100.Optional discharge system with fan for discharge up to approx. 60 metres long.* With the exception of the components intended for that purpose, such as roof and wall terminals.The diameter of the concentric system appliance connection can be found in table 4-1. By means of natural draft, the flue gases are discharged to the outside, this can be achieved by means of a wall terminal (C11) or a roof terminal (C31). If necessary, an existing chimney can be used (C91, see section 7.3.5).In addition, if combined with PowerVent® (C12, C32), it is possible in many cases to discharge the flue gases with a smaller diameter (DRU PV-I 100/60).1Only 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.1Use a chimney kit for making a connection to the chimney; this can be supplied by DRU.1For terminals, observe the information in table 7-2.Table 7-1: Concentric systems and their application

Installation manual18SystemDRU LAS AG-1 150/100DRU LAS ES-I 150/100DRU LAS ES-I 200/130DRU PV-I 100/60(also see:installation manuelPowerVent®)DRU LAS ES-E 200/150/100Ø(mm)≥250≥300≥200≥204Ø(mm)≥154≥204≥104≥204NotesThe terminal hole may be covered with a rosette made of non-combustible material. This terminal hole must be ventilated.A 2 mm wide ventilation opening around the tube is sufficient. The space between the tube and the combustible material may not be filled with insulation material.The distance from combustible material may be 0 mm.The terminal hole does not require ventilation.If a clip binding is placed in a terminal hole, a hole diameter of Ø230mm must be maintained.NoteMake terminal hole all around 2mm larger than the diameter of the concentric system to prevent "ticking"and such like.The terminal hole does not require ventilation. Make terminal hole all around 2mm larger than the diameter of the concentric system to prevent "ticking" and such like.The terminal hole does not require ventilation.If a clip binding is placed in a terminal hole, a hole diameter of Ø230 mm must be maintained.3-Maintain a distance of at least 50 mm between the outside of the concentric system and the walls and/or ceiling. If the system is built in (for instance) a cove, it should be made with non combustible, heat-resistant material all around it. This does not apply to the insulated concentric system (DRU LAS ES-E 200/150/100).-Some heat-resistant insulation materials contain volatile components that will spread an unpleasant smell for a prolonged time; these are not suitable.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.Place the concentric system as follows:1Build the system up from (the flue spigot of) the appliance.1Connect the concentric pipe pieces and, if necessary, the bend(s).1Apply a clip binding with silicon sealing ring on each connection (does not apply to DRU LAS ES-E 200/150/100, here the sealing ring is inside the tube).1Use a sheet metal screw to fix the clip binding to the pipe on locations that cannot be reached after installation.1Attach 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.1Fasten a roof terminal with anchor cables, if it protrudes more than 1,5 metres above the terminal.1Determine the remaining length for the wall or roof terminal and cut it to size, make sure the correct insertion length is maintained.1Place the wall terminal with the (groove/folded) seam at the top. Attach the wall terminal from the outside by means of four screws.Hole diameter and executionCombustible materialNon combustible materialTable 7-2: Terminals

2My Flue Assist is a DRU web application to check whether an intended concentric system is permissible and provides advice on how to adjust the appliance. Go to the DRU Service website for My Flue Assist. The information from the installation manual is always leading.7.3.2 Roof terminal (C31)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.When using a roof terminal (C31), the following applies:The construction of the chosen system has to be allowed. The working method below indicates how the permissibility is determined of a concentric system when using a roof terminal.1Count the number of 45° and 90° bends required (15° and 30° bends are also allowed; these are not counted).1Count the total number of whole metres of horizontal pipe length.1Count the total number of metres of vertical and/or sloping pipe length (roof terminal excluded).1Find the number of required bends and the total horizontal pipe length (see table 7-3, columns 1 and 2).1Find the required total vertical and/or sloping pipe length (see table 7-3, row 1).1A box with a letter means that the chosen concentric system is permitted.1Determine the adjustment of the appliance (see table 7-4).1Adjust the appliance correctly with, for instance, a restrictor slide and an air inlet guide (see section 8.2).Roof terminal Maestro 75XTU3-In case of a roof terminal without bends: first connect 0.8 metres of concentric system vertically on the appliance with a diameter of 200/130 mm. After the first 0.8 metres, reduce the concentric system to a 150/100 mm diameter, including a 150/100 mm roof terminal.-In case of a roof terminal with bends: first connect 0.8 metres of concentric system vertically on the appliance with a diameter of 200/130 mm. Make the concentric system with a 200/130 mm diameter, and reduce the concentric system immediately after the last bend to 150/100 mm, including 150/100 mm roof terminal.Installation manual19

Installation manual20DDDDDDCCCCBBDDDDCCCCBBAADDCCCCBBAAACCCCBBAAAACCBBAAAAABBAAAAAAAAAAAAADDDCCCCBBAAADCCCCBBAAAACCCBBAAAAACBBAAAAAABAAAAAAAAAAAAADDCCCCBBAAAACCCCBBAAAAACCBBAAAAAABBAAAAAAAAAAAAAAAAAAATable 7-3: Determination of the permissibility of a concentric system with roof terminalG20/G25/G25.3G30/G31Total number of metres horizontal pipe lengthTotal number of metres vertical and/or sloping pipe lengthNo bends2 bends3 bends4 bends5 bendsSituation is not permissible. There are many more possibilities in combination with the DRU PowerVent® system (DRU PV-I 100/60) (see PowerVent® installation manual). Table 7-4: Conditions for setting the appliance when using a roof terminalG20/G25/G25.3/G30/G31Situation ABCDAir inlet guide L1*L1L1L1 + L2Restrictor slide NOR1R1+R2R1+R2* Factory settings: Air inlet guide (L1) mounted and no restrictor slide placed.3The concentric system in combination with a roof terminal (C31) needs to be reduced in diameter to 150/100 mm. See section 7.3.2 for further explanation and placement of the reduction.