Diablo - Dru site for the trade
Contents
1. 21 38P 0462 38P 0381 English INSTALLATION MANUAL 38P 0463 38P 0464 INSTALLATION MANUAL 38P 0465 38P 0469 INSTALLATION MANUAL 39 English 41 38p 0181 43 38p 0182 38C 2006 0 INSTALLATION MANUAL English So PANEL 2 506 atteries 38C 1940 lt n c LLI DRU Verwarming B V The Netherlands Postbus 1021 NL 6920 BA Duiven Ratio 8 NL 6921 RW Duiven2. vertical flue length allowed lt 12 m window glass not mounted gas tight PowerVent Check Possibly too much draught Check Pressure difference set too high Silicon pressure measurement hoses leaking Consult PowerVent installation manual for more info of some permanent magnetism English English INSTALLATION MANUAL Start no 1 02 Receiver Batteries missing or empty Replace by 4x AA After replacing batteries short Replace by new one Replace rechargeables by alkaline batteries Communication code between remote and receiver has to be re set Press reset button on receiver until brief beep followed by long beep Release reset button and press flame low button on remote within 20 seconds Then 2 short beeps and brief noise of servomotor to confirm that communication code was set succesfully Remote control Battery 9V empty see indication on display Several After switching off going out the remote set is locked for 120 sec older versions 60 sec Wait 2 minutes before reigniting preceded by 7 short beeps beep No beep receiver defective yes 1 04 Check All appliances 8wire cable between receiver and gas control not connected poor contact or one wire loose in connector check by pulling wire by wire Wiring of thermocouple circuit interrupted or
3. itself The gas supply will be interrupted after 22 seconds In order to solve a poor or non existent transfer from the pilot burner to the main burner please use the malfunction search diagram in Appendix 1 3 5 Oxypilot safety if applicable see Appendix 2 Table 2 If the appliance is provided with an oxypilot safety you need to know that it will intervene the pilot flame and the gas supply to the main burner will be switched off if insufficient combustion air oxygen is supplied Once the supply of combustion air is sufficient again the appliance can be restarted The supply of fresh air can be controlled by installing opening ventilation holes INSTALLATION MANUAL 4 Removing the packaging Note the following items when removing the packaging gt Check the appliance and accessories for damages during transport gt If necessary contact your supplier gt Never install an appliance that is damaged gt Remove any screws that are used to fix the appliance to a platform or pallet ICaution Heat resistant glass is a ceramic material Very small irregularities in the glass pane s cannot be avoided but are within the required quality standards ICaution Keep plastic bags away from children English In Appendix 2 Table 1 you can see which parts you should have after removing the packaging Contact your supplier if you do not have all the parts after you finished removing the packaging Dispose of pac
4. Electric connection In case of a 230 Volt electrical connection provide proper grounding if applicable Place this electrical connection away from the appliance as low as possible in the chmney breast This has to do with the temperature development in the chimney breast If possible place the receiver after any building work has been completed If this is not possible Protect the receiver against dust and moisture created during the building process 5 3 Placing the appliance Always place the appliance with a minimum distance of 500 mm from combustible objects or materials Place the discharge pipes in such a way that situations with risk of fire can never occur Always place the appliance in front of a wall of non combustible and heat resistant material A Always maintain a minimum distance between appliance and back wall if indicated in the dimensional drawing Appendix 3 fig 2 sufficient measures to prevent high temperatures of a possible wall behind the chimney breast including the materials and or objects that are behind the wall cover the appliance and or do not wrap it in an insulation blanket or any other material sure that the appliance to be installed has a stable position If applicable this could also be done by fixing the extension legs with self tapping screws When installing an appliance that has to be built in take the following into account minimum constru
5. consists of vermiculite see Appendix 3 fig 17 chips see Appendix 3 fig 18 glow material see Appendix 3 fig 19 and a number of logs Fill the burners with vermiculite spread the vermiculite evenly see appendix 3 fig 20 The vermiculite may not get higher than the edge of the burners You can influence the flame picture by moving the vermiculite but the burner decks have to remain fully covered with vermiculite in order to prevent reduction of the burner s life span Identify logs A to D see Appendix 3 fig 21 Use the burn stains on the logs for identification Place log A against the corresponding positioning cams see Appendix 3 fig 22 Place log C on the appropriate bracket see Appendix 3 fig 23 Place log B against the appropriate bracket see Appendix 3 fig 24 Finally place log D on log B see Appendix 3 fig 25 Fill the vermiculite tray with chips spread the chips evenly see appendix 3 fig 26 Do NOT place chips over the slot around the burner If required spread the glow material over the burner Keep thermocouple 2 free from glow material Fasten the glow material under the logs The logs should not completely cover the burner pattern because the main burners 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 5 13 Mantelpiece Proceed carefully and obse
6. discharge system are not allowed A 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 material all around it A Use heat resistant insulation material when passing through combustible material Usea flue gas discharge system with the correct diameter and which is provided with the CE mark Some heat resistant insulation materials contain volatile components that will spread an unpleasant smell during a longer period these are not suitable Place the flue gas discharge system as follows Connect the pipe pieces or flexible SS discharge You should only install the appliance in a well ventilated room which complies with the applicable national local and constructional installation regulations in order to guarantee sufficient air supply When the appliance is installed in a house with a mechanical air extraction system and or an open kitchen with cooker hood you will need a permanent ventilation hole near the appliance for this application please observe the gas installation regulations and the local instructions 5 8 Flue gas discharge combustion air supply system in appliances with closed combustion 5 8 1 General The appliance s type of discharge system is stated in Appendix 2 Table 2 The appliance will be connected to a combined flue gas discharge combustion air supply
7. e g Domotics For this purpose there are 4 connection points at the side of the receiver see Appendix 3 fig 44 For connecting an external control unit you will need a Domotics connection cable for GV60 Consult DRU s service website The following contacts are possible Ignition connect both contacts 1 3 for one second if there is a 2nd thermocouple the appliance should burn at full power for at least 20 sec before the required position can be chosen Flame high er briefly close contact 1 once per step or 12 seconds for the highest position Flame low er until switch off pilot flame remains on briefly close contact 3 once per step or 12 seconds for the lowest position Completely switching off the appliance pilot flame included close all three contacts 1 2 3 for one second The appliance will always continue to respond to the radio remote control supplied with it The external control system is able to use one of the two modes of this remote control 1 Manual mode This mode of the remote control is passive and will not take any action unless it is operated The external control system is able to control the functions for high low position ignition and switching off If the external control system has an intelligent clock function and or thermostat function the remote control supplied with the appliance should have the manual mode in order to prevent interruption of these functions 2 Clock t
8. of pressure measurement gauge 2 11 No proper cross lighting of main burner s Go to box 2 09 and take actions act as described for retarded ignition of main burner INSTALLATION MANUAL 2 12 Does appliance switch off exactly 22 sec after servomotor starts running no 2 14 Does main burner go out after some time no 2 16 15 flame picture OK yes yes 2 18 Can fire be switched off 2 20 Perfect You have a well functioning fire 2 13 Check cross lighting main burner and 2nd thermocouple system Measure voltage of 2nd thermocouple Voltage 0 mV Voltage lt 1 8 mV Voltage gt 1 8 mV Cross lighting of main burner too slow Measure the time in sec from start running of servomotor till the flame reaches the 2nd couple Requirement the flame must be in position at the 2nd couple lt 10 sec If not check Check voltage in mV 22 sec after servomotor starts to run c q just before fire goes out Glass window to be mounted Measure between black wire earth point on gas control Requirement voltage gt 5 mV after rectification actions 2nd couple defective Cross ligting main burner very slow Take actions Cross lighting too slow see below before taking any further action Cross ligting main burner too slow Take actions Cross lighting too slow see below before taking a
9. operation 6 weeks after the chimney breast has been placed in order to prevent shrinkage cracks Check whether the flame picture is acceptable Consult the malfunction search diagram Appendix 1 if the flame picture is not acceptable INSTALLATION MANUAL ICaution Ke n ICaution ICaution ICaution The appliance must be inspected once per year by a skilled installer in the field of gas fired heating and repaired if necessary Check at least whether the appliance is working properly and safely Always close the gas tap during maintenance work Check the gastightness after repair After replacing thermocouple 1 you should first tighten the gland nut by hand and then give it another quarter turn with a suitable spanner You are not allowed to turn the pilot flame lower by using the settings on the gas control If required clean the following components the pilot burner malfunction search diagram Appendix 1 the space surrounding the pilot burner the glass pane s Remove place the glass pane s as described in section 5 10 Remove the deposit on the inside of the glass pane s with a damp cloth or a non abrasive detergent such as copper polish or a ceramic hot plate cleaner Avoid remove fingerprints on the glass pane s since otherwise they will burn into the surface Replace a broken and or cracked glass pane s as described in section 5 10 If necessary replace the wood or pe
10. system hereafter to be referred to as the concentric system The passage to the outside can be made with both a wall terminal and roof terminal If necessary you can also use an existing chimney see section 5 8 4 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 For connecting to an existing chimney you should only use the chimney kit supplied by DRU 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 English lt un c LL INSTALLATION MANUAL ICaution ICaution VVVVVVV 5 8 2 Construction of the concentric system Depending on the construction of the concentric system the appliance will have to be further adjusted with possibly a restrictor slide 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 The concentric system with wall or roof terminal has to comply with the following conditions First a concentric pipe of minimum length should be connected vertically to the appliance according to Appendix 2 Table 4 or 5 A Det
11. Manual Mode see 2 04 Pilot stays on receiver defective Gas control defective if receiver is not defective Replace gas control 2 09 Ignition procedure Oval knob on gas control is on MAN Set to ON and restart Retarded ignition of main burner s Gas to main burner opens ca 3 5 seconds after servo motor operating the gas valve starts running sound of motor Aft this the main burner is to ignite at least partially within 10 seconds and not with a firm noise WHOOF If not no or delayed cross lighting of main burner Hazardous situation Stop ignition procedure straig away and first check for Position of logs or pebb Burner holes locally blocked ht les Remove vermiculite dust Vermiculite missing Chips on burner Vermiculite not distributed evenly across burner s PowerVent if present Burner does not light Consult PowerVent installation manu al how to carry out the checks below Check and fan Silicon pressure measurement hoses swapped leaking or barred 230 V to fan controller unit Pressure difference set too high Resistance of flue system too high adjustment of appliance damper and air inlet guides flue length or number bends too large dirty e g cobwebs Operation of the fan of Operation of solenoid gas valve Operation of fan controller unit Operation
12. Pilot out when servomotor starts to run Check the thermocouple system Measure thermocouple voltage in mV just after servomotor starts to run and the voltage goes down Measure between red dot on receiver and earth point on gas control fig 42 0 2 3 3 5 6 mV and higher Requirement after rectification actions thermocouple voltage should be 6 mV at least just after motor starts running Voltage 0 mV Thermocouple defective Check by replacing or measuring voltage at end whilst heating tip with a lighter Short circuiting or interruptions in circuit Check thermocouple tight in interruptor interruptor tight in gas control black wires yellow red end connected to interruptor receiver interruptor mount thermocouple directly in gas control and ignite in Manual Mode see 2 04 If pilot stays on interruptor defective Voltage 2 3 mV Check pilot flame Too small pilot dirty Clean up see 2 04 check for pilot gas tube tightness pilot tube kinks or dirt inside line pressure too low Tip thermo couple not in correct pilot flame Bend into flame Voltage 3 5 mV Appliance may work but is too critical Perform actions as described for 2 3 mV Voltage 6 mV and higher Voltage OK so different cause Receiver defective Check by dismounting black red and yellow control cables from receiver and link together Ignite fire in
13. able 4 Conditions for setting the appliance G20 G25 G25 3 Total number Total number of meters See Air inlet guide Restrictor slide Distance of of meters horizontal pipe length Figure restriction inmm vertical pipe excluding wall length terminal 10 4 20 1 4 YES YES 602 3 10 4 22 5 4 NO NO OPEN 1 minimum length 2 factory setting 3 Position O restrictor slide INSTALLATION MANUAL Table 5 Determining permissibility concentric systemwith roof terminal G20 G25 G25 3 Total number of meters Total no of meters vertical and or sloping pipe length horiz pipe length 1912 4 5 6 7 8 9 10 11 12 bends 0 D D T 2 bends 0 81 18 8 c i 1 18 18 8 2 8 8 8 3 8 8 4 8 8 5 3 bends 0 A A A B B B D 1 8 8 8 2 8 8 3 8 8 8 4 8 5 4 bends 0 A A B B B 1 8 8 2 8 8 8 3 8 4 5 5 bends Situation is not permissible Table 6 Conditions for the adjustment of the appliance with a roof terminal G20 G25 G25 3 Situation Air inlet guide Restrictor slide Distance r
14. all back A Place the glass pane with the logo at the bottom right INSTALLATION MANUAL ICaution Make sure the front glass pane makes full contact with the side pane there may be no opening between the side pane and front pane If the front and side glass panes do not connect Loosen the self tapping screws and nuts of the side pane clamp strips by a few turns Slide the side pane tightly against the front pane ICaution Make sure there is no sealing tape between the front and side panes where the panes connect Tighten the self tapping screws and nuts of the clamp strips 5 11 Setting the appliance The appliance has to be set in such a way that it works correctly with the used concentric system For that purpose a restrictor slide is placed and or an air inlet guide is removed The conditions for application with wall terminal and roof terminal are stated in appendix 2 tables 4 5 and 6 English 5 11 1 Air inlet guides Check tables 4 5 and 6 to see whether the restrictor slide has to be removed in your set up The air inlet guides L are at the rear at the bottom of the combustion chamber of the appliance see Appendix 3 fig 10 and 11 Follow the procedure below when removing Remove the glass pane as described in section 5 10 1 Remove plate M as indicated see appendix 3 fig 10 Fully remove the four self tapping screws of the two air inlet guides see appendix 3 fig 11 Remove the two air inlet
15. anual 1x 5 User manual 1x Key bolts x 60 x 40 mm 4x Washer M6 4x Spare self tapping screws for mounting the glass panes nx Socket spanner 8 mm 1x Remote control with receiver 1x 9V block battery 1x Penlite battery AA type 4x Compression fitting 15mm x G3 8 1x Mantelpiece 1x Decorative frame drain pipe or discharge material in colour Separately available INSTALLATION MANUAL c LLI Ga Product name Diablo Type of appliance Suspended Combustion Closed combustion Supply and discharge system Concentric 150 100 Flame protection version Pilot flame with thermocouple 2nd thermocouple safety yes Atmosphere safety no Explosion hatch no Ventilation hole chimney breast Type C11 C31 C91 Type of gas G20 G25 G25 3 Burner pressure mbar 14 5 18 0 Nominal heat input Hs kW 5 9 5 9 Nominal heat input Hi kW 53 5 0 Nominal output kW 4 1 3 8 Consumption L h 558 595 Consumption on low output L h 263 270 Burner injector mm 1x 21 85 1x 1 85 Low setting injector mm 21 3 21 3 Pilot burner injector Code 51 51 Efficiency class 2 2 INSTALLATION MANUAL Table 3 Line pressure when using G31 Country mbar NL DK FI NO SE BA GR FR BE IT PT ES GB IE D English Permissibility and conditions concentric system with wall terminal T
16. aution ICaution ICaution 5 9 Additional instructions It will be easier to reach the gas control if you remove the mantelpiece 5 9 1 Placing the appliance The temperature of the wall behind the appliance may rise up to 60 This should be taken into account when selecting the wall and wall covering Aminimum free space of 100 mm space should be maintained below the appliance A At both sides and above the appliance a free space of at least 500 mm should be maintained see Appendix 3 fig 2 When placing the appliance take the following aspects into account Firmly attach the wall plate B to a solid non combustible wall using four bolts see Appendix 3 fig 5 The wall plate B must be level Carefully suspend the appliance T from the wall plate B see Appendix 3 fig 6 5 9 2 Gas connection Provide a gas connection G3 8 on the correct location see Appendix 3 fig 5 Make sure there is no dirt in gas pipes and connections J Connect the gas pipe to the gas tap Bleed the gas pipe Place the receiver of the remote control see section 5 9 3 5 9 3 Placing the receiver The appliance is equipped with an electronic ignition through the remote control The receiver must be placed in the appliance Follow the procedure described below Place the receiver in the receiver tray see Appendix 3 fig 7 Connect the receiver to the appliance according to the instructions in section 6 1 5 10 G
17. bble set correctly for this see section 5 12 Inspect the flue gas discharge system You must always perform a final inspection Perform the inspection as described in chapter 7 8 1 Parts Parts requiring replacement can be obtained from your supplier INSTALLATION MANUAL 9 Delivery You must explain to the user how to operate the appliance You must give him her instructions on putting it in operation the safety measures the operation of the remote control and annual maintenance see the User Manual ICaution Tell the user to close the gas tap immediately and contact the installer in case of malfunctions poor operation This to prevent unsafe situations Indicate the location of the gas tap Point out the precautions in the user manual against unintended ignition by other wireless remote controls such as car keys and garage door openers Instruct the user about the appliance and the remote control When the appliance is started for the first time point out that In order to avoid cracks in a chimney breast made of stone like materials or finished with plaster it should dry for at least 6 weeks prior to putting the appliance into operation When the appliance is stoked up for the first time volatile components evaporate from paint materials etc First read chapter 3 of the User Manual as well When evaporating the appliance should preferably be set to the highest level Theroom should be
18. ction dimensions according to Appendix 3 fig 1 and 2 construction height of the appliance which you can determine yourself Provide a gas connection at the location For details see section 5 2 Make a passage for the flue gas discharge system or the concentric system with the following diameters for details see section 5 7 or 5 8 the pipe diameter 10 mm for a passage through non combustible material the pipe diameter 100 mm for a passage through combustible material INSTALLATION MANUAL ICaution ICaution ICaution ICaution ICaution ICaution ICaution Starting at section 5 9 you will find additional instructions that are specifically needed for the installation of your appliance 5 4 Placing a built in appliance if applicable Not all built in appliances by DRU are supplied with a control hatch If it is not included this control hatch is available separately We recommend using the Dru control hatch at all times In this chapter it is assumed that the appliance is used with a control hatch If you do not use a recommended Dru control hatch please strictly observe the safeguards and necessary instructions stated in chapters 5 4 to 5 6 If you are not using the control hatch please take the following into account as well the accessibility of components that are normally placed in the control hatch the maximum temperature of these components
19. dru Diablo English G20 G25 G25 3 Natural gas Installation manual UK IE Store this document a safe place cu DRU15798 495858 EN 0414 3 959 059 00 NL INSTALLATION MANUAL 1 Introduction 2 CE declaration 3 SAFETY 3 1 General 3 2 Regulations 3 3 Precautions safety instructions during installation 3 4 Second thermocouple safety 3 5 Oxypilot safety 4 Removing the packaging 5 Installation 5 1 Type of gas 5 2 Connection 5 3 Placing the appliance 5 4 Placing a built in appliance 5 5 Placing the chimney breast 5 6 Placing the control hatch 5 7 Flue gas discharge system in appliances with open combustion 5 8 Flue gas discharge combustion air supply system in appliances with closed combustion 5 9 Additional instructions 5 10 Glass pane 5 11 Setting the appliance 5 12 Placing the wood set 5 13 Mantelpiece 6 Control 6 1 Connecting the receiver 6 2 Setting the communication code 6 3 Alternative operation 7 Final inspection 7 1 Gastightness 7 2 Gas pressure line pressure 7 3 Ignition pilot and main burner 7 4 Flame picture 8 Maintenance 8 1 Parts 9 Delivery 10 Malfunctions Ke n Appendix 1 Diagnosis of malfunctions Appendix 2 Various tables Appendix 3 Figures INSTALLATION MANUAL 1 Introduction gt ITip DRU a manufacturer of gas fired heating appliances develops and produces products that comply with the highest quality perfo
20. e burner surface A Place control hatch and bracket with gas control and accessories indoors in a dry place only A number of components are placed in the control hatch such as data plate gas control receiver belonging to the remote control and if applicable the control panel of the DRU Maxvent system or the components belonging to the DRU Powervent system Place the control hatch as follows see Appendix 3 fig 3 for details Make an opening in the chimney breast of 285 x 194 mm h x w Place the inner frame 1 unscrew bolts 5 for this When the chimney breast is made of bricks the inner frame can be built with bricks at the same time When using a different material you can glue the inner frame or fix it with four flush screws Mount the gas control to the brackets of the inner frame 2 Reconnect the pipes to the gas control Avoid kinks in the pipes Tighten the flexible gas pipe and the pilot burner pipe until they are gastight A First tighten the thermocouple by hand Then tighten it a quarter turn using a suitable spanner The pilot burner pipe must be protected against possible corrosive influences as a result of for example humidity cement that has fallen down dirt that has fallen down from the chimney etc The pilot burner pipe should remain permanently free from the ground and the walls of the room in which the appliance is built in When installing in an existing fireplace or if it is not
21. ebs air inlet guides flue restrictor damper throttle rings See manual for specific requirements PowerVent Possibly not enough draught Check if pressure difference set too high Consult PowerVent installation manual Pilot burner Pilot burner dirty Weak pilot flame being drawn away by flames main burner Clean with compressed air See 2 04 2 17 Check Flames too low Supply pressure does not 2 19 Replace gas control thermo electric valve does not shut down quick enough because drop away as main burner or other appliances in the building light causing flames to shorten Burner pressure too low False air Check soundness glass window gasket soundness of the connection ofthe glass panes of two three sided appliances no slots allowed Flames too high Line pressure Burner pressure Flames no even distribution or out on part of the burner s Position of logs or pebbles Burner holes locally blocked Remove vermiculite dust Vermiculite not distributed evenly across burner s Adjustment of throttle ring s Flames too blue too yellow or sooting Air inlet guides Flue restrictor damper Adjustment of throttle ring s Flames suffocating lack of air You see dancing flames on burner seeking for air See 2 15 Flame picture restless Indication of too much draught Check adjustment of appliance damper and air inlet guides
22. elivery you should give the manuals to the user 2 CE declaration We hereby declare that the design and construction method of the gas fired heating appliance issued by Dru complies with the essential requirements of the gas appliance directive Product gas fired heating appliance Type Diablo EEC directives 2009 142 EC Standards NEN EN 613 NEN EN613 A1 Internal precautions at the company will guarantee that appliances produced in series comply with the essential requirements of the EC directives in force and the standards derived from them This declaration will lose its validity if adjustments are made to the appliance without prior written permission by DRU You will be able to download a copy of the test certificate via www druservice com MJ M Gelten General manager Postbus 1021 6920 BA Duiven Ratio 8 6921 RW Duiven www dru nl English lt un c LL INSTALLATION MANUAL 3 SAFETY ICaution VV VVVVVVVV VV WV ICaution 3 1 General A Please observe the generally applicable regulations and precautions safety instruction in this manual A First check the exact technical version of the appliance to be installed in Appendix 2 Table 2 3 2 Regulations Please install the appliance in accordance with the applicable national local and constructional installation regulations 3 3 Precautions safety instructions during installation Carefully observe the follow
23. ermine the permissibility of the required discharge When using a wall terminal the following applies total vertical pipe length when using a wall terminal may have a maximum length that you can find in Appendix 2 Table 4 In that case a 90 bend will be connected after the vertical part total horizontal pipe length when using a wall terminal may a maximum length that you can find in Appendix 2 Table 4 without wall terminal see Appendix 3 fig 4 When using a roof terminal the following applies 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 Count the total number of whole metres of horizontal pipe length Count the total number of metres of vertical and or sloping pipe length roof terminal excluded In the first 2 columns of Table 5 look for the number of bends required and the total horizontal pipe length In the top row of Table 5 look for the required total vertical and or sloping pipe length If you end up in a box with a letter the concentric system chosen by you is permissible Use Table 6 to determine how the appliance should be adjusted amp N 5 8 3 Plac
24. ermine the remaining length for the wall or roof terminal and cut it to size make sure the correct insertion length is maintained Place the wall terminal with the groove folded seam at the top INSTALLATION MANUAL ICaution 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 8 4 Connection to an existing chimney It is possible to connect the appliance to an existing chimney A flexible SS pipe is placed in the chimney with a fitting diameter at the flue gas discharge pipe for the discharge of flue gas The surrounding space is used to supply combustion air The following requirements apply when connecting to an existing chimney only allowed when used in combination with the special DRU chimney kit The installation regulation is also supplied the internal dimensions should be at least 150 x 150 mm the vertical length has a maximum of 12 metres the total horizontal pipe length may have a maximum length that you can find in Appendix 2 Table 4 the existing chimney has to be clean theexisting chimney has to be tight English For adjusting the appliance the same conditions instructions apply as for the concentric system described above lt un c LL INSTALLATION MANUAL ITip ICaution ICaution ICaution ICaution IC
25. estrictor in mm A NO NO OPEN B YES YES 35 YES YES 25 D YES YES 23 INSTALLATION MANUAL Appendix 3 Figures 1 5 150 2100 N 9 367 160 ie o 2 NS 5 J 196 i Diablo Next 1 6 1 90 E amp 0 5m 568 min 406 a 219 g kh 638 5 112 English INSTALLATION MANUAL C LL 2000 0 11 38 2003 0 INSTALLATION MANUAL 12 cans 38C 2002 0 LLI e e e TI lt j INSTALLATION MANUAL English 17 38p 0022 38p 0023 19 38P 0028 1 38P 0461 INSTALLATION MANUAL
26. g the pilot and main burner see the User Manual chapter 4 section 4 2 Remote control 7 3 1 First ignition of the appliance after installation or adjustments After installation or after work has been performed you should ignite the appliance for the first time without the glass window If necessary bleed the gas pipe Follow the procedure described below If required remove the glass window Start the ignition procedure according to chapter 4 in the User Manual If the pilot flame does not ignite repeat the ignition procedure until the pilot burner ignites consult the malfunction search diagram Appendix 1 if this does not happen after a few attempts After igniting the pilot flame the main burner will ignite during the ignition procedure Check whether the main burner continues to burn If the main burner does not continue to burn repeat the ignition procedure until the main burner continues to burn consult the malfunction search diagram Appendix 1 if this does not happen after a few attempts Switch off the appliance Then mount the glass window as described in chapter 5 10 Repeat the ignition procedure a few times and perform the checks described in chapter 7 3 2 From now on the pilot flame should ignite smoothly English When checking whether the main burner continues to burn it is possible that it still switches off after 22 seconds This happens because the appliance is equipped with a second thermoc
27. guides L Screw back the four self tapping screws in the combustion chamber Place the plate M back in the combustion chamber Place back the glass pane as described in section 5 10 2 ICaution The self tapping screws of the air inlet guides must have been screwed back in the combustion chamber Donotthrow away the air inlet guides you may need them in the future ITip If you are installing an appliance whereby a restrictor slide has to be placed do not yet place back the glass pane VVVVVVV 5 11 2 Restrictor slide The restrictor slide R must be adjusted to the right position see Appendix 3 fig 12 Proceed as follows gt Remove the glass pane as described in section 5 10 1 ICaution The restrictor slide should be placed in the correct manner Therefore accurately observe the instructions in Appendix 3 fig 12 gt Loosen the 2 self tapping screws by a few turns but not fully gt 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 4 cut out letters B C and D correspond with the letters in table 5 the O is indicated in table 4 gt 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 ICaution At restriction D the restrictor slide should be placed fully towards the front Now tighten the 2 self tapping screws At p
28. hermostat mode This mode of the remote control is active and will be responsible for the clock function and thermostat function The external control system is able to control the functions for high low position ignition and switching off Ifthe appliance is switched off the pilot flame included manually or by one of the safeguards ignition of the appliance will be blocked for a period of 3 minutes for reasons of safety lfitis no longer possible to operate the appliance with the external control system you must switch it off and then switch it on again with the supplied remote control 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 used 7 1 Gastightness ICaution All connections must be gastight Check the connections for gastightness The gas control can 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 ICaution The line pressure in house installations must be checked because it can be wrong gt gt Check the line pressure see Appendix 3 fig 41 for the measuring nipple on the gas control Contact the gas company if the line pressure is not correct INSTALLATION MANUAL ICaution ICaution ICaution ICaution 7 3 Ignition pilot and main burner For ignitin
29. in an insulation blanket or any other material make sure that combustible objects and or materials have a distance from the appliance of at least 500 mm only use the accompanying wood pebble set and place it exactly as described the space surrounding the pilot burner 2nd thermocouple or ionisation pins must remain free make sure there is no dirt in gas pipes and connections place a gas tap in accordance with applicable regulations prior to putting into operation check the complete installation for gastightness if your appliance is provided with explosion hatches on its top you must make sure that they cannot be blocked and check whether they fit well onto the sealing surface prior to building in the appliance do not ignite the appliance before the gas and discharge connections have been fully installed first observe the procedure described in chapter 7 3 replace broken or torn glass panes In case of broken or torn glass panes the application may not be used 3 4 Second thermocouple safety if applicable see Appendix 2 Table 2 It is possible that the appliance to be installed has 2 thermocouples Thermocouple 1 is always next to the pilot burner thermocouple 2 is always elsewhere above the main burner If the appliance is provided with a second thermocouple safety on the main burner you need to know that it will intervene if no proper transfer has taken place from the pilot burner to the main burner or from the main burner
30. ing precautions safety regulations You should only install and maintain the appliance if you are a certified and competent installer in the field of gas fired heating Do not make any changes to the appliance If you are installing an appliance that must be built in use non combustible and heat resistant material for the chimney breast including the top of the chimney breast the material inside the chimney breast and the back wall against which the appliance will be placed For this you can use both sheet material and stone like materials A take sufficient measures to prevent high temperatures of the wall behind the chimney breast including the materials and or objects that are behind the wall comply with the minimum required internal measurements of the chimney breast vent the chimney breast by means of ventilation holes with a combined passage as stated further down in the text use heat resistant electric connections and make sure that they do not make contact with the appliance If you are installing an appliance with an open combustion use a suitable flue gas discharge system that is provided with the CE label if you are installing an appliance with a closed combustion only use the concentric systems supplied by DRU if you are installing a free standing appliance place the appliance away from the back wall by the minimum distance stated further down in the text do not cover the appliance and or do not wrap it
31. ing the concentric system 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 material all around it Use heat resistant insulation material when passing through combustible material rosette of the wall terminal is too small to seal the opening when passing through combustible material That is why you should first apply a sufficiently large heat resistant intermediate sheet to the wall Then the rosette is mounted on the intermediate sheet The roof terminal can end in a sloping and a flat roof The roof terminal can be supplied with a glue plate for a flat roof or with a universally adaptable tile for a sloping roof Some heat resistant insulation materials contain volatile components that will spread an unpleasant smell during a longer period these are not suitable Place the concentric system as follows Build the system up from the flue spigot of the appliance Connect the concentric pipe pieces and if necessary the bend s On each connection apply a clip binding with silicon sealing ring Use a self tapping screw to fix the clip binding to the pipe on locations that cannot be reached after installation Apply sufficient wall brackets so that the weight of the pipes does not rest on the appliance Attach the wall terminal from the outside by means of four screws Det
32. kaging in accordance with local regulations Ke n INSTALLATION MANUAL 5 Installation ICaution ICaution ITip ICaution ICaution ICaution ICaution Read this manual carefully to ensure the proper and safe installation of the appliance Install the appliance in the order described in this chapter Please install the appliance in accordance with the applicable national local and constructional installation regulations Observe the regulations instructions in this manual 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 can be found on the appliance or can be attached to a chain to which it should remain attached Check whether the appliance is suitable for the type of gas and the gas pressure used at the location Ifyou want to convert this appliance into a different type of gas please contact DRU s service department and ask what is possible 5 2 Connection 5 2 1 Gas connection Place a gas tap in the gas pipe in accordance with the applicable regulations Make sure there is no dirt in gas pipes and connections 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 5 2 2
33. lass pane Avoid damages when removing placing the glass pane Avoid remove fingerprints on the glass pane as they will burn into the glass 5 10 1 Removing the glass pane For removing the glass pane you must observe the following steps Remove the mantelpiece as indicated in section 5 13 Fully remove the 4 self tapping screws from the clamp strip and remove the clamp strip see appendix 3 fig 8 Hold the glass pane to prevent it from falling out Now carefully remove the glass pane by tilting the top a little forward and lifting out the glass pane see Appendix 3 fig 9 Make sure the sealing tape at the edges of the glass pane is not damaged during removal 5 10 2 Placing the glass pane Placing the glass pane will take place in reverse order of removing the glass pane as described above Avoid remove fingerprints on the glass pane as they will burn into the glass bolts and nuts should not be over tightened since otherwise they could break or strip the thread tight tight J Check whether the sealing tape is located neatly along the edge of the glass pane When placing back the glass pane take the following instructions into account Slowly slide down the glass pane in its position and allow the glass pane to rest on the lower strip Make sure the glass pane is placed exactly in the middle of the appliance and neatly connects to the side panes A Continue to stop the glass pane in the middle so it does not f
34. maximum 60 C The gas control is mounted under the appliance at the burner mounting plate 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 6 Follow the procedure described below Disconnect the pipes from the gas control flexible gas pipe aluminium pilot burner pipe and thermocouple 1 The red wire of thermocouple 2 if applicable must remain connected to the gas control Disconnect the gas control from the burner mounting plate by unscrewing the self tapping screw Carefully unwind the red and black wire of thermocouple 2 if applicable Carefully lay the gas control together with the wires of thermocouple 2 the ignition cable the flexible gas hose the aluminium pilot burner pipe and the type plate plus chain in the direction of the control hatch Make sure there is no dirt in gas pipes and connections A Avoid kinks in the pipes Make sure the ignition cable cannot come into contact with other wires The data plate should remain attached to the chain Set the height of the appliance using the adjustable feet and Make the appliance level at the same time The construction frame for most 2 or 3 sided appliances can be adjusted This will allow you to connect the construction frame to the chimney breast correctly For 2 or 3 sided appliances that cannot be adjusted we would like to refer you to chapter 5 9 Additional instructions do
35. n hole that is placed as low as possible for the benefit of the incoming ventilation the location of the ventilation holes V outgoing maintain a minimum 30 cm distance between the top of the ventilation hole outgoing and the ceiling of the house the measurements of the glass pane so that it can be placed removed after placing the chimney breast the protection of the gas control and the pipes against cement and plaster You should preferably apply the ventilation holes outgoing on both sides of the chimney breast You can use DRU ventilation elements Prior to completely closing the chimney breast check 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 If applicable do not plaster on or over the edges of the construction frame because the heat of the appliance could cause cracks itwill no longer be possible to remove place the glass pane When using stone like materials and or a plaster finishing allow the chimney breast to dry for at least six weeks prior to using the appliance in order to prevent cracks 5 6 Placing the control hatch if applicable The control hatch also see paragraphs 5 4 and 5 5 is placed as low as possible in the chimney breast The bottom of the control hatch may not be placed higher in the appliance than th
36. not ignite the appliance before the gas and discharge connections have been fully installed first observe the procedure described in chapter 7 3 5 5 Placing the chimney breast if applicable In order to provide proper heat discharge there should be sufficient space around the appliance The chimney breast should be ventilated sufficiently by means of ventilation holes incoming and outgoing J Usenon combustible and heat resistant material for the chimney breast including the top of the chimney breast the material inside the chimney breast and the back wall of the chimney breast A Make sure that the appliance is not carrying the weight of the chimney breast when using stone like materials The passage of the ventilation holes outgoing which are placed as high as possible is stated in Appendix 2 Table 2 English INSTALLATION MANUAL ICaution lt un c LL ITip ICaution ICaution When placing the chimney breast you should take the following into account see Appendix 3 fig 2 the location of the control hatch this must be placed as low as possible the dimensions of the control hatch see Placing the control hatch section 5 6 theDru control hatch is not supplied with all appliances Nevertheless we recommend only using Dru control hatch which can be supplied separately if necessary If you decide not to take this option you will have to make a 100 cm ventilatio
37. ny further action 2nd couple barred Check 2nd couple free of vermiculite chips or pebbles position of logs or pebbles burner holes under 2nd couple open 2nd couple defective cross lighting OK but voltage creeps up too slow Flames instable see 2 15 Rectify before any other action is taken Burner pressure too high or too low 2nd couple not positioned correctly in flame Bend into correct position see fig 43 2nd thermocouple positioned correctly see manual Bend into flame only if cross lighting and flame picture are OK See 2 17 Receiver defective Replace 2nd couple free from vermiculite chips or pebbles position of logs or pebbles burner holes locally blocked Remove vermiculite dust vermiculite missing or not evenly distributed across burner s chips on burner lack of combustion air See 2 15 cross lighting in low setting possible when thermostat function is used 2 15 Check Gas 5 pes upply Supply pressure does not drop away as main burner or other appliance lights causing pilot flame to shorten Burner pressure too high or too low Flames instable suffocating lack of air Dancing flames on burner Lack of combustion air Check flue system permissible proper flue terminal used make should be DRU terminal correctly sited on roof or wall relative to obstructions integrity of flueing system no interruptions not barred cobw
38. ontrol Gas flowing out of gas control by loosening pilot tube at gas control If not check adjustment screw pilot flame under black cover sealing not to be broken Sealing broken screw should be fully open 2 05 Check Ignition cable Present and connected Being free from metal parts or concrete Too long cut away all excessive length at receiver end and reconnect Shorting out to earth replace ignition cable Spark in wrong position slide rubber sleeve on ignition cable over ceramic of electrode Replace electrode if neccessary Ignition electrode Straight electrode oxidation roughen electrode with file or sand paper position 4 mm from pilot burner Cracks in ceramic not always visible replace electrode Starting procedure After switching off going out the remote is locked for 120 sec older versions 60 sec Wait 2 minutes before reigniting Blocking of pilot tube kink or dirt If this does not help replace gas control Step 2 Pilot has gas but no ignition Electrode with 90 bended tip bend tip 1 mm higher Spark too weak thin and reddish Act as if no spark in box 2 05 and perform actions described for ignition cable and ignition electrode Pilot flame too weak dirty Remove injector remove gland nut and the pilot tube See that it does not fall away Clean with compressed air Rectify Retry i no 2 07
39. osition A the restrictor slide should be fully removed from the combustion chamber Proceed as follows Remove the 2 self tapping screws of the restrictor slide from the combustion chamber see appendix 3 fig 12 Remove the restrictor slide R Screw back the self tapping screws in the combustion chamber ICaution The self tapping screws of the restrictor slide must have been screwed back in the combustion chamber Do not throw away the restrictor slide you may need it in the future Place back the glass pane as described in section 5 10 2 ITip If you are installing an appliance whereby a wood set has to be placed do not yet place back the glass pane lt un c LL INSTALLATION MANUAL ICaution ICaution dv 5 VNNNN ICaution ICaution ICaution ICaution ICaution ICaution 5 12 Wood set The appliance is supplied with a wood set Strictly observe the following instructions to prevent unsafe situations only ever use the supplied wood set place the wood set exactly as described make sure the pilot burner and the surrounding space remain free see Appendix 3 fig 15 make sure thermocouple 2 and the surrounding space remain free see appendix 3 fig 16 make sure the slot between and around the burners remains free make sure that the vermiculite s fine dust does not get on the burners 5 12 1 Wood set The wood set
40. ouple and the glass window has not been placed In this case you may presume that the main burner will continue to burn A During the ignition process you are not allowed to operate control button B on the gas control manually A Always wait 5 minutes after the pilot flame has gone out before you re ignite the appliance You are not allowed to turn the pilot flame lower by using the settings on the gas control 7 3 2 Main burner The pilot burner should ignite the main burner within a couple of seconds and without popping The main burner s must cross the full burner smoothly and without popping and continue to burn Check operation of the main burner from a cold condition pilot flame off After opening the gas valve the main burner should burn within a few seconds When the gas valve is opened the motor will start to run this is audible The flame picture and a good flame transfer can only be properly judged if the glass window is installed Use the malfunction search diagram Appendix 1 if the ignition of the main burner does not comply with the abovementioned requirements 7 4 Flame picture The flame picture can only really be assessed when the appliance has been burning for several hours Volatile components from paint materials etc which evaporate in the first hours will affect the flame picture If the chimney breast has been made of stone like materials or has a plaster finish the appliance may only be put into
41. poor contact Check thermocouple thermocouple interrupter and wiring Sie box 2 05 Microswitch on gascontrol defective Appliances with 2nd thermocouple only 2nd thermocouple not cooled down sufficiently Wait till cooled down voltage 0 8 mV measure between black extension wire and earth Wiring of 2nd couple interrupted Check black and red extension wire of 2nd couple to be connected to 2nd thermocouple both wires receiver black wire can be forgotten at installing earth red wire Else receiver defective Replace Malfunction search diagram atmospheric gas fired heating appliance with electronic ignition Starting up cycle 1 05 1 01 Does receiver beep gt 1 03 gt Short sound signals 1 sec after yes One long 5 second beep possibly 10 each other followed by the yes clicking noise of the gasvalve opening 56 1 06 3 swift beeps 1 sec after each other when motor turns or 3 brief short beeps within 1 sec at end of ignition cycle Turn two pages backwards and continue with box 2 01 yes 1 07 Replace batteries Measure battery voltage lt 5 5V replace preventative lt 4 8V appliance works no longer Replace batteries INSTALLATION MANUAL Appendix 2 Tables Table 1 Parts included with the delivery Part Number Wood set 1x Glow material 1x L Installation m
42. possible to keep the pipes free the pipe should be protected against corrosion by means of a jacket Make sure there is no dirt in gas pipes and connections Connect the gas pipe to the gas tap Bleed the gas pipe INSTALLATION MANUAL ITip ICaution ICaution VN ICaution Place the receiver in the holder 3 for connecting see section 6 1 Place the data plate in its intended clamp 6 Fix the outer frame with door 4 to the inner frame using 2 socket cap screws 5 You can place the outer frame in such a way that the door turns to the left or to the right 5 7 Flue gas discharge system in appliances with open combustion For connection to an existing chimney without a discharge pipe or flexible SS discharge only allowed in Great Britain the instructions provided in the separately supplied booklet Fitting into a conventional class 1 chimney apply In addition to the installation instructions this booklet also contains supplementary tests 5 7 1 General The appliance s type of discharge system is stated in Appendix 2 Table 2 The appliance must be connected to an existing or newly built chimney in accordance with the applicable national local and constructional installation regulations 5 7 2 Connection of flue gas discharge system if a class 1 chimney is not applicable At least a 3 metre discharge pipe or a flexible SS discharge should be connected to the appliance Bends in the flue gas
43. rmance 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 As an installer you must be certified and competent in the field of gas fired heating The installation manual will give you the information you need to install the appliance in such a way that it will operate properly and safely This manual discusses the installation of the appliance and the regulations that apply to the installation In addition you will find the appliance s technical data as well as information on maintenance possible malfunctions that might occur and what may cause them The figures can be found at the back of this booklet in the appendix Please read and use this installation manual carefully and completely prior to installing this appliance If you use the DRU Powervent system the DRU Smartvent system or the DRU Maxvent system you must carefully and fully read and use the accompanying installation manual as well prior to its installation The following symbols are used in the manual to indicate important information Work to be performed Suggestions and recommendations ICaution You will need these instructions to prevent problems that might occur during installation and or use ICaution You need these instructions to prevent fire personal injury or other serious damages After d
44. rve the procedure described in chapter 7 3 Below we will describe how the receiver is connected 6 1 Connecting the receiver Your appliance is equipped with an electronic ignition through the remote control The receiver should be connected to the appliance before the batteries are installed Connect the receiver according to Appendix 3 fig 38 Bend the antenna N out of the clips and place it erect Appendix 3 fig 39 The plugs have different sizes that correspond with the connectors size of the eye corresponds with the size of the screw colours of eye and screw correspond as well Place the batteries as described below in section 6 1 1 Do not place the ignition cable over and or along metal stone or concrete parts this will weaken the spark Make sure the cable is hanging freely sure that the wires of thermocouple 2 cannot come into contact with hot parts Keep the ignition cable at least 10 cm away from the antenna in order to avoid damaging the receiver Avoid formation of dust on or in the receiver cover it when performing work Place the receiver in its intended holder under the appliance or in the control hatch according to Appendix 3 fig 39 Ifyou want to use an adapter only an adapter supplied by DRU will guarantee a proper operation of the receiver 6 1 1 Placing replacing the receiver s batteries Follow the procedure below when placing the batteries Pick up
45. rve the instructions in order to prevent damage to the mantelpiece and or other parts 5 13 1 Placing the mantelpiece The mantelpiece consists of two parts the mantelpiece K and the cover plate J When mounting the mantelpiece proceed as follows Hold the mantelpiece K straight in front of the appliance see Appendix 3 fig 13 Now carefully slide the mantelpiece over the appliance Make sure you make no contact with the glass in order to prevent scratches Hook the mantelpiece behind the top edge of the wall plate B Now place the cover plate J on the mantelpiece see Appendix 3 fig 14 5 13 2 Removing the mantelpiece Removing the mantelpiece will take place in reverse order of the placement described above Proceed carefully and observe the instructions in order to prevent damage to the mantelpiece and or other parts A Make sure you make no contact with the glass in order to prevent scratches INSTALLATION MANUAL 6 Control ICaution ICaution ICaution The appliance is supplied with a wireless remote control Controlling the flame height igniting and switching off take place through a remote control controlling a receiver Chapter 4 Wireless remote control in the User Manual describes the operation of the appliance and how you should use the remote control Do not ignite the appliance before the gas and discharge connections have been fully installed first obse
46. the receiver and slide off the cover Place or remove the 4 penlite AA type batteries Observe the and poles of the batteries and the receiver Use alkaline batteries rechargable batteries are not allowed Batteries are regarded as small chemical waste and may therefore not be disposed with the household rubbish Slide back the cover Place back the receiver 6 2 Setting the communication code Prior to putting the application into operation a communication code must be set between the remote control and the receiver If the receiver or the remote control are replaced a new code will have to be set Follow the procedure described below If necessary place the batteries in the receiver s battery holder see section 6 1 1 If necessary place the 9V block battery in the remote controle see User Manual Hold down the reset button on the receiver until you hear two consecutive sound signals see Appendix 3 fig 40 After the second longer signal let go of the reset button Press the small flame button on the remote control for 20 seconds until you hear two short sound signals this is the confirmation of a good communication b small flame large flame English Ke n INSTALLATION MANUAL ITip ITip 6 3 Alternative operation Appliances made with an electronic ignition and radio remote control can be connected to an alternative external control system
47. well ventilated Give the manuals to the user all manuals should be stored near the appliance 10 Malfunctions In Appendix 1 you will find an overview of malfunctions that might occur the possible causes and the remedies English English INSTALLATION MANUAL Start yes 2 01 Can pilot be lit JE 2 02 Sparking E 2 03 Only one spark a yes Loosen and retighten earthing screw on gas control If this does not work replace receiver Appendix 1 diagnosis of malfunctions Fires with electronic ignition fault finding Ignition and burning 2 06 Pilot can be lit Does it stay alight 2 08 Does main burner ignite immediately yes 2 10 Do es main burner s ignite smoothly and across its their full length after first ignition by pilot burner ye 2 04 Check Receiver Replace missing weak or rechargeable batteries not enough power to open thermoelectric valve Presence of gas on pilot burner Check pilot on presence of gas at normal ignition cycle or in Manual Mode turn oval knob on gas control to MAN and keep safety shut off valve opened with a screwdriver and ignite pilot with a lighter Pilot flame not on Step 1 Pilot flame on Step 2 Step 1 Pilot has no gas Check Gas tap open Gas at gas control line pressure at measuring point on gas c
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