Gas-fired boilers DTG 230. User Guide D

EN Gas-fired boilers DTG 230 User Guide 300011506-001-D

. Contents 1 Introduction.............................................................................3 1.1 Symbols used...........................................................................................3 1.2 General................................................................................................3 1.2.1 Manufacturer's liability..............................................................................3 1.2.2 Installer's liability..................................................................................3 1.2.3 User's liability.....................................................................................3 2 Safety instructions and recommendations....................................................4 2.1 Safety instructions.......................................................................................4 2.2 Recommendations.......................................................................................4 3 Description..............................................................................5 3.1 Main parts..............................................................................................5 3.2 Control panel...........................................................................................6 3.2.1 B3 control panel...................................................................................6 3.2.2 DIEMATIC-m3 control panel.........................................................................7 3.2.3 K3 control panel...................................................................................8 4 Utilisation de l appareil....................................................................6 4.1 Commissioning the boiler..................................................................................9 4.2 Changing the settings.....................................................................................9 4.2.1 B3 control panel...................................................................................9 4.2.2 DIEMATIC-m3 control panel........................................................................10 4.2.3 K3 control panel..................................................................................10 4.3 Switching off the boiler...................................................................................11 4.3.1 Precautions to take if there is a danger of frost..........................................................11 4.3.2 Precautions to take in the event of prolonged shutdown (one year or more)....................................11 4.1 Commissioning the boiler..................................................................................9 5 Checking and maintenance...............................................................12 6 Troubleshooting........................................................................12 6.1 Data plate.............................................................................................12 6.2 Error messages........................................................................................13 6.2.1 B3 control panel..................................................................................13 6.2.2 DIEMATIC-m3 control panel........................................................................13 6.2.3 K3 control panel..................................................................................14 6.3 Incidents and solutions...................................................................................14 7 Technical characteristics.................................................................15 8 Energy savings.........................................................................15 2 DTG 230 09/03/2011-300011506-001-D

1. Introduction 1 Introduction 1.1 Symbols used Caution danger Risk of injury and damage to equipment. Attention must be paid to the warnings on safety of persons and equipment. Specific information Information must be kept in mind to maintain comfort. Reference Refer to another manual or other pages in this instruction manual. DHW: Domestic hot water 1.2 General Congratulations on your choice of a high quality product. We strongly advise you to read the following instructions in order to guarantee the optimal operation of your appliance. We are sure that it will be entirely to your satisfaction and will meet with all of your expectations. Keep these instructions in a safe place close to the appliance. In the interest of customers, De Dietrich Thermique SAS are continuously endeavouring to make improvements in product quality. All the specifications stated in this document are therefore subject to change without notice. 1.2.1 Manufacturer's liability The liability of De Dietrich Thermique SAS as the manufacturer may not be invoked in the following cases: - Failure to abide by the instructions on using the appliance, - Faulty or insufficient maintenance of the appliance, - Failure to abide by the instructions on installing the appliance 1.2.2 Installer's liability The installer is responsible for the installation and inital start up of the appliance. The installer must respect the following instructions: When handing over the installation to the user, the installer will draw the user's particular attention to the following points: Read and follow the instructions given in the manuals provided with the appliance, Carry out installation in compliance with the prevailing legislation and standards, Perform the initial start up and carry out any checks necessary - The safety of the installation, - The functioning of the installation and the boiler, - Periodic maintenance to be done. 1.2.3 User's liability To ensure the optimum operation of your appliance, we strongly recommend that you abide by the following instructions : Read and follow the instructions given in the manuals provided with the appliance. Get your fitter to explain your installation to you. Call on qualified professionals to: - Carry out installation in compliance with the prevailing legislation and standards - Perform the initial start up - Carry out work on the appliance and the installation - Have the required checks and services done 09/03/2011-300011506-001-D DTG 230 3

2. Safety instructions and recommendations 2 Safety instructions and recommendations 2.1 Safety instructions Fire hazard Do not stock products of an inflammable nature close to the appliance. If you smell gas, do not use a naked flame, do not smoke, do not operate electrical contacts or switches (doorbell, lights, motor, lift, etc.). 1.Shut off the gas supply 2.Open the windows 3.Extinguish all flames 4.Evacuate the premises 5.Contact a qualified professional 6.Inform the gas supplier Risk of intoxication Do not obstruct the air inlets in the room (even partially). If you smell flue gases 1.Switch the appliance off 2.Open the windows 3.Evacuate the premises 4.Contact a qualified professional Risk of being burnt Avoid direct contact with the flame viewport. Depending on the settings of the appliance: - The temperature of the flue gas conduits may exceed 60 C - The temperature of the radiators may reach 95 C - The temperature of the domestic hot water may reach 65 C Risk of damage Do not stock chloride or fluoride compounds close to the appliance. Install the appliance in frost-free premises. Do not neglect to service the appliance: Contact a qualified professional or take out a maintenance contract for the annual servicing of the appliance. 2.2 Recommendations Only qualified professionals are authorised to work on the appliance and the instalation. Before any work, switch off the mains supply to the appliance. Check regularly that the installation contains water and is pressurised. Keep the appliance accessible at all times. Avoid draining the installation. The appliance should be on Summer or Antrifreeze mode rather than switched off to guarantee the following functions: - Frost protection - Protection against corrosion on domestic hot water tanks fitted with a titanium anode 4 DTG 230 09/03/2011-300011506-001-D

3 Description 3. Description 3.1 Main parts The models presented are marketed in the various countries according to the countries' specific sales programme. DTG 230 Eco.NOx 6 to 13 sections 14 sections DTG 230 S 7 to 13 sections 14 sections 1. Control panel 2. Factory fitted bridge Connection for gas pressure switch (Option - Package GC191) Natural gas: 12.5 mbar Propane: 20 mbar 3. a: Gas valve - Stage1 b: Gas valve - Stage2 4. a: Flame inspection window - Stage1 b: Flame inspection window - Stage2 5. a: Ignition electrode b: Ionization probe 6. Safety box 7. Valve connector - Stage2 8. Safety control box and valve connector - Stage1 9. Downdraught thermostat 6-9 sections: Supplied 10-14 sections: Option (Factory fitted bridge) - Package GC22 Belgium + Russia: The downdraught thermostat is compusory for all models of boiler and must be fitted systematically. 10. DTG 230 Eco.NOx: Flue damper DTG 230 S: Not used (Factory fitted bridge) 11. Factory fitted bridge - Connection for cyclical tightness controller (Option - Package CY41) or - Connection for safety valve (Option - Package GC191) 09/03/2011-300011506-001-D DTG 230 5

3. Description 3.2 Control panel 3.2.1 B3 control panel 1. General ON (1) / OFF (0) switch 2. Burner alarm indicator + Reset button This light comes on when the safety control box is in safety lockout (out of order). 3. Switch TEST-STB/ / : Heating and domestic hot water are in operation : Only domestic hot water is in operation Position TEST-STB: Temporary action to test the safety thermostat 4. Safety thermostat with manual reset Set at 110 C 5. Timed circuit breaker (4 A) 6. Pump shutdown switch 7. Electronic thermostat (30 to 90 C) 8. Heating on light 9. Location for flue gas thermometer (optional) 10. Switch for selecting the number of burner stages (2-stage boilers) 11. Digital display - Light 8 lit: Boiler temperature display - Light 13 lit: Domestic hot water display When preparing domestic hot water 12. Electronic thermostat (10 to 80 C) 13. Domestic hot water on light 14. Location for hour run meter (Option) 6 DTG 230 09/03/2011-300011506-001-D

3. Description 3.2.2 DIEMATIC-m3 control panel Electromechanical components 1. General ON (1) / OFF (0) switch 2. Burner alarm indicator + Reset button This light comes on when the safety control box is in safety lockout (out of order). 3. Switch AUTO/ /TEST-STB AUTO: Automatic control : Manual control TEST-STB: Temporary action to test the safety thermostat 4. Safety thermostat with manual reset Set at 110 C 5. Timed circuit breaker (4 A) 6. Pump shutdown switch 7. Boiler thermostat (30 to 90 C) 8. Boiler thermometer 9. Switch for selecting the number of burner stages (2-stage boilers) 10. Connector USB 14. Boiler heat curve 15. Flap 16. Display Display 1 Text and numerical display 2 Graphic display bar for the programme in circuit A, B or C 3 Light area: Reduced temperature heating period or tank load disabled Dark area: Comfort temperature heating period or tank load 4 enabled 5 Flashing cursor showing the current time Number display (current time, adjusted values, parameters, 6 etc.) 7 Number of the boiler for which the parameters are displayed 8 The arrows flash when setting values can be modified using the + and - keys 9 Circuit operation symbols A B C Opening the 3-way valve Closing the 3-way valve Displayed circuit pump on Name of the circuit displayed 10 11 Arrows indicating the chosen time programme (P1, P2, P3 or P4) for the circuit displayed, A, B, C, or the activation of the manual summer mode Symbols indicating that the following inputs/outputs are active DHW load pump on Summer mode (Automatic / Manual) Burner on Operation with modulating burner Not used Operation with 2-stage burner Burner on with 1 stage Burner on with 2 stages 09/03/2011-300011506-001-D DTG 230 7

3. Description 3.2.3 K3 control panel 1. General ON (1) / OFF (0) switch 2. Burner alarm indicator + Reset button This light comes on when the safety control box is in safety lockout (out of order). 3. Switch AUTO/ /TEST-STB AUTO: This position enables automatic operation of the installation in accordance with DIEMATIC-m 3 regulation controls. : The boiler no longer takes orders from the DIEMATIC-m 3 regulation into account. The boiler is regulated by the boiler thermostat(s). TEST-STB: Temporary action to test the safety thermostat 4. Safety thermostat with manual reset Set at 110 C 5. Timed circuit breaker (4 A) 6. Pump shutdown switch 7. Boiler thermostat (30 to 90 C) 8. Boiler thermometer 9. Switch for selecting the number of burner stages (2-stage boilers) 10. Connector USB 8 DTG 230 09/03/2011-300011506-001-D

4. Operating the appliance 4 Operating the appliance 4.1 Commissioning the boiler Initial commissioning must be done by a qualified professional. K3 control panel (Secondary boiler in cascade with a DIEMATIC-m3 boiler): 1. Check the water pressure in the installation. Top up with more water if necessary. 2. Open the gas valve. 3. Make the settings on the control panel: B3 control panel: - Turn the switch TEST-STB/ / to. - Turn the pump shutdown switch to - Set the boiler thermostat to the desired setting. - When preparing domestic hot water: Set the DHW thermostat to the desired setting. Setting 6 (approx 60) recommended. DIEMATIC-m3 control panel: - Turn the AUTO / / TEST STB switch to AUTO. - Turn the pump shutdown switch to - Set the boiler thermostat to maximum (between 7½ and 9). - Set switch AUTO / / TEST STB to the AUTO position. 4. Turn the burner switch to 2 (2 stage version) 5. Check that the safety thermostat has not triggered. Remove the safety thermostat hood and press the reset button with a screwdriver. 6. Set the On/Off switch to 1. Only for control panel DIEMATIC-m3: When the boiler is switched on, the tank exchanger is purged for one minute if a tank is connected and its temperature is lower than 25 C. If disgassing has already taken place, press the MODE key to suspend disgassing. Only for control panel DIEMATIC-m3: On commissioning, it is necessary to select the desired language with the + and - keys and confirm with the MODE key. 4.2 Changing the settings 4.2.1 B3 control panel Heating temperature setting: Set the boiler thermostat to the desired setting. Setting the domestic hot water temperature: Set the DHW thermostat to the desired setting. 09/03/2011-300011506-001-D DTG 230 9

4. Operating the appliance 4.2.2 DIEMATIC-m3 control panel Keys accessible when the flap is closed Keys accessible when the flap is open Adjustment keys MODE Various operating modes can be selected by successively pressing key MODE: AUTOMATIQUE DAY 7/7: Forced operation at permanent Day temperature DAY (Until midnight): Forced operation at temporary Day temperature NIGHT 7/7: Forced operation at permanent Night temperature NIGHT (Until midnight): Forced operation at temporary Night temperature DAYS ANTIFREEZ: Antifreeze mode for the number of days set ANTIFREEZ 7/7: Permanent antifreeze mode Restart key for a DHW calorifier load AUTOMATIQUE DHW: Restarts DHW load until midnight DHW 7/7: DHW load is forced permanently After a few seconds, the display disappears but the mode is activated. Display key for the various counters (number of burner start-ups, number of burner operating hours, etc.) Adjustment keys STANDARD Enter (per 1/2 hour) the comfort temperature period or tank load enabled (dark area). Enter (per 1/2 hour) the reduced temperature period or tank load disabled (light area). Simultaneously pressing the 2 keys, and, resets all of the time programmes. Return key Page scrolling Line scrolling Scroll of boilers connected Manual "Summer" shutdown key. The heating is switched off and DHW production is ensured. Fitter settings access key DO NOT USE Set temperatures Day (Heating / DHW / Pool) Set temperatures Night (Heating / DHW) Access key to the secondary boilers (Control panel K3) in a cascade If using only one boiler, this key is inactive. Setting the gradients for circuits A, B and C Setting the parallel offsets DECAL.// DEP.A, DECAL.// DEP.B or DECAL.// DEP.C for the heating curves on circuits A, B or C. If the Day setting for one of the circuits, A, B or C, is above 30 C, you no longer have access parallel offset on this circuit. +/- Adjustment keys 4.2.3 K3 control panel Heating temperature setting: Set the boiler thermostat to the desired setting. Make all other settings on the master boiler fitted with a DIEMATICm3 control panel Press the key. 10 DTG 230 09/03/2011-300011506-001-D

4. Operating the appliance 4.3 Switching off the boiler Set the On/Off switch to 0. DIEMATIC-m3 control panel The panel must always be supplied with 230V voltage: - to ensure the anti-grip of the heating pump, - to ensure Titan Active System operation when a titanium anode is protecting the DHW tank. Use the mode: - summer to shut down the heating. - antifreeze to shut down the boiler if you are to be absent. 4.3.1 Precautions to take if there is a danger of frost Heating circuit: Use a correctly dosed antifreeze to prevent the heating water freezing. If this cannot be done, drain the system completely. In all cases, consult the fitter. Domestic hot water circuit: Drain the domestic water tank and pipes. 4.3.2 Precautions to take in the event of prolonged shutdown (one year or more) - Close the gas valve - The boiler and the chimney must be swept carefully. - Close the door of the boiler to prevent the internal circulation of air. 09/03/2011-300011506-001-D DTG 230 11

5. Checking and maintenance 5 Checking and maintenance Make the following checks at least 1 time a year: - Checking the ignition burner - Safety devices - Water level - Checking burner safety - Checking the safety thermostat - Checking the downdraught thermostat Carry out the following maintenance at least 1 time a year: - Cleaning main burner and ignition burner - Cleaning of the heating body - Cleaning painted surfaces 6 Troubleshooting 6.1 Data plate Before informing the fitter of a fault, make a note of the following information: Type of gas used Boiler type Manufacturing date Year (01 = 2001, 02 = 2002,...) Week Serial no. of the appliance This information can be found on the rating plate stuck to the front plate of the boiler. XX-XX 12 DTG 230 09/03/2011-300011506-001-D

5. Checking and maintenance 6.2 Error messages 6.2.1 B3 control panel Message Faults Probable causes Action AL 50 Boiler sensor AL 52 Domestic hot water sensor The sensor is cut AL td AL tc Titanium anode The sensor circuit has been broken or short circuited. The titanium anode is in open circuit or the tank is empty. A short circuit has occurred on the titanium anode or connection reversed. The installation is stopped. The installation continues to operate but domestic hot water heating is no longer covered. Production of domestic hot water is stopped. This may be reactivated for 24 hours by disconnecting and reconnecting the power supply to the boiler. 6.2.2 DIEMATIC-m3 control panel Message Probable causes Action SHOW REM. CTRL The message SHOW REM.CTRL indicates the presence of an override on a remote control. REVISION Boiler service required. DISGAS AUX1.SENS.FAIL AUX2.SENS.FAIL UNIV.SENS.FAIL DHW 2 S. FAIL BOILER S.FAIL. OUTSI. S.FAIL. DHW S. FAILURE OUTL S.A FAIL. OUTL S.B FAIL. OUTL S.C FAIL. ROOM S.A FAIL. ROOM S.B FAIL. ROOM S.C FAIL. SMOKE S. FAIL. SWIM.P.A S.FAIL SWIM.P.B. S.FAIL SWIM.P.C. S.FAIL SOLAR S. FAIL ST.TANK S.FAIL When connecting voltage, if the hot water tank temperature is below 25 ºC, the boiler carries out a domestic water exchanger purge cycle. The sensor circuit has been broken or short circuited. The sensor circuit has been broken or short circuited. The sensor circuit has been broken or short circuited. The sensor circuit has been broken or short circuited. The sensor circuit has been broken or short circuited. The sensor circuit has been broken or short circuited. The sensor circuit has been broken or short circuited. The sensor circuit has been broken or short circuited. The sensor circuit has been broken or short circuited. The sensor circuit has been broken or short circuited. To cancel the overrides on all remote controls, press the AUTO key for 5 seconds. Wait 1 minute. If the boiler sensor fails, the burner is controlled by the boiler thermostat and the heating and DHW circuits operate normally. The boiler setting is equal to BOILER MAX. but can be limited by the boiler thermostat to a lower value. - The valve setting is no longer ensured but monitoring the maximum temperature of the circuit after the valve is ensured. - Valves may be manually operated. - Reheating the domestic hot water remains ensured. To ensure domestic hot water production, set the switch AUTO/ /TEST- STB to. The circuit concerned goes from automatic to manual mode: The pump operates. The circuit concerned operates without any influence from the room sensor. This failure has no impact on the operating modes. Pool reheating is independent of its temperature. Reheating domestic hot water using the solar panel is no longer ensured. The hot water storage tank reheating operation is no longer assured. 09/03/2011-300011506-001-D DTG 230 13

5. Checking and maintenance Message Probable causes Action TA-S SHORT-CIR TA-S DISCONNEC TA-S FAILURE The last ten failures are memorised in the paragraph #DEF. HISTORY 6.2.3 K3 control panel The Titan Active System is short-circuited. No error messages displayed. See DIEMATIC-m3 control panel display. 6.3 Incidents and solutions The Titan Active System is on an open circuit. Internal problem. Domestic hot water production is shut down and can be restarted using key. The tank is no longer protected. Domestic hot water production is shut down and can be restarted using key. The tank is no longer protected. Switch off the current. The burner is not working: - Check the boiler thermostat settings. - Shutdown by the safety thermostat due to accidental overheating - The safety control box is malfunctioning (Fault indicator light illuminated) Press the resetting button of the burner. Call your fitter. Check that the safety thermostat has not triggered. To restart the boiler, reset the safety thermostat. Remove the safety thermostat hood and press the reset button with a screwdriver. Carry out the start-up operations again. Call your fitter. - Check the circuit breaker The burner is operating but the radiators are cold: - Bleed the radiators. - Top up the primary circuit with water. If it is often necessary to top up the installation with water, contact your fitter. - Check that the heating pump is operating correctly. - Check the position of the 3 position switch. B3 control panel: TEST-STB/ / on. DIEMATIC-m3 control panel: AUTO/ /TEST STB on AUTO. K3 control panel: AUTO/ /TEST STB on AUTO - Check the boiler thermostat settings. 14 DTG 230 09/03/2011-300011506-001-D

7 Technical characteristics 7. Technical characteristics DTG 230-... Eco.NOx / S 6 (5) 7 8 9 10 11 12 13 14 Useful output Stage1 kw 27 27 36 36 45 45 54 54 54 Stage2 kw 45 54 63 69.9 (4) /72 81 90 99 108 117 Smoke temperature (1) (2) C 135 135 135 135 135 135 135 135 135 Minimum output temperature C 30 30 30 30 30 30 30 30 30 Maximum output temperature C 90 90 90 90 90 90 90 90 90 Maximum operating pressure bar 6 6 6 6 6 6 6 6 6 Electrical connection V/Hz 230/50 230/50 230/50 230/50 230/50 230/50 230/50 230/50 230/50 Electrical power (1) (3) B3 DIEMATIC-m3 K3 W (1) At nominal output (Stage2) (2) Boiler temperature: 80 C (3) Electrical power of the boiler only with no accessories (4) Only in France: A useful output lower than 70 kw makes it possible to install the boiler in a mini-boiler room. (5) Only Eco.NOx version 20 21 19 20 21 19 20 21 19 Gas connection inch R1 R1 R1 R1 R1 R1 R1 R1 R1 Heating connection inch R1 1/2 R1 1/2 R1 1/2 R1 1/2 R1 1/2 R1 1/2 R1 1/2 R1 1/2 R1 1/2 Internal diameter flue gas nozzle mm 150 160/180 180 180 200 200 200 220/225 220/225 Water content l 25 29 32.6 36.2 39.8 43.4 47 50.6 54.2 Net weight (without water) kg 203 230 257 283 305 334 357 386 408 20 21 19 20 21 19 20 21 19 20 21 19 Conditions of use: - Max. safety temperature: 110 C - Max. operating pressure: 6 bar - Thermostat adjustable from 30 to 90 C - Safety thermostat: 110 C 20 21 19 20 21 19 8 Energy savings Here are a few tips for saving energy: - Install reflector panels behind the radiators. - Do not cover the radiators. Do not hang curtains in front of the radiators. - Insulate pipes to prevent thermal losses and condensation. - Do not obstruct aeration grates (even partially). They help to reduce humidity in the home. The more humid a home, the more heating it consumes. - Turn heating off when airing a room (5 minutes a day is sufficient) Avoid deregulating the thermostat. Switch the On/Off switch to Off. - Do not shut down heating completely if you are absent. Lower the thermostat by 3-4 C. - Use the sun's heat as much as possible. - Take showers rather than baths. Use a water-saving shower head. 09/03/2011-300011506-001-D DTG 230 15

7. Technical characteristics Warranty You have just purchased one of our appliances and we thank you for the trust you have placed in our products. Please note that your appliance will provide good service for a longer period of time if it is regularly checked and maintained. Your fitter and our customer support network are at your disposal at all times. Warranty terms Starting from the purchase date shown on the original fitter's invoice, your appliance has a contractual guarantee against any manufacturing defect. The length of the guarantee is mentioned in the price catalogue. The manufacturer is not liable for any improper use of the appliance or failure to maintain or install the unit correctly (the user shall take care to ensure that the system is installed by a qualified fitter). In particular, the manufacturer shall not be held responsible for any damage, loss or injury caused by installations which do not comply with the following: - applicable local laws and regulations - specific requirements relating to the installation, such as national and/or local regulations - the manufacturer's instructions, in particular those relating to the regular maintenance of the unit - the rules of the profession The warranty is limited to the exchange or repair of such parts as have been recognised to be faulty by our technical department and does not cover labour, travel and carriage costs. The warranty shall not apply to the replacement or repair of parts damaged by normal wear and tear, negligence, repairs by unqualified parties, faulty or insufficient monitoring and maintenance, faulty power supply or the use of unsuitable fuel. Sub-assemblies such as motors, pumps, electric valves etc. are guaranteed only if they have never been dismantled. France The preceding dispositions are not exclusive of benefits for the purchaser of the legal guarantee as stated in Civil Code articles 1641 to 1648. Poland Warranty conditions are included in the warranty card. Switzerland The application of the warranty is subject to the terms and conditions of sale, delivery and warranty of the company marketing our products. Belgium The preceding dispositions about the contractual guarantee are not exclusive of profit if the need arises for the purchaser in Belgium of the applicable legal dispositions on hidden defects. Italy The duration of our warranty is shown on the certificate delivered with the appliance. Our liability as manufacturer may not be invoked in respect of incorrect use of the appliance, incorrect or insufficient maintenance thereof, or incorrect installation of the appliance (you must therefore ensure that installation and maintenance operations are carried out respectively by a qualified professional and by an after sales service company). The legislation laid down by European Directive 99/44/EEC, transposed by Legislative Decree No. 24 of 2 February 2002 published in O.J. No. 57 of 8 March 2002, continues to apply. Russia The foregoing provisions in no way affect the rights of the consumer, which are guaranteed by the legislation of the Russian Federation as regards hidden defects. The terms and conditions of warranty and the terms and conditions of application of the warranty are indicated on the warranty form. The warranty shall not apply as regards the replacement or repair of wearing parts under normal use. Such parts include thermocouples, injection nozzles, flame control and ignition systems, fuses and gaskets. Turkey Due to the laws and regulations the product life for this product is 10 years. During that time the producer and/or the distributor has to provide after sales services and spare parts. Other countries The above provisions do not restrict the benefit of the legal laws regarding hidden defects applicable in the buyer's country. 16 DTG 230 09/03/2011-300011506-001-D

7. Technical characteristics 09/03/2011-300011506-001-D DTG 230 17

Copyright All technical and technological information contained in these technical instructions, as well as any drawings and technical descriptions supplied, remain our property and shall not be multiplied without our prior consent in writing. Subject to alterations. 09/03/2011 DE DIETRICH THERMIQUE 57, rue de la Gare F- 67580 MERTZWILLER - BP 30