CLAS HE EVO CLAS HE EVO System Installation and Servicing Instructions CONDENSING WALL-HUNG GAS BOILER G.C.N.:47-116-65 (24 kW) G.C.N.:47-116-66 (30 kW) G.C.N.:47-116-67 (38 kW) G.C.N.:41-116-36 (18 kW) G.C.N.:41-116-37 (24 kW) G.C.N.:41-116-38 (30 kW) Country of Destination.
INDEX Overview .......................................................................................................3 General Information ...................................................................................4 Advice for the Installer...............................................................................4 CE Labelling ...................................................................................................4 Data Plate Symbols .................................................
overview These instructions are suitable for CLAS HE boilers : Do not forget the Log Book! The Benchmark Scheme Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are provided with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance with the manufacturer’s instructions by competent persons and that it meets the requirements of the appropriate Building Regulations.
overview Advice for the installer The installation and first ignition of the boiler must be performed by qualified personnel in compliance with current national regulations regarding installation, and in conformity with any requirements established by local authorities and public health organisations.
overview Safety regulations Key to symbols: Failure to comply with this warning implies the risk of personal injury, in some circumstances even fatal Failure to comply with this warning implies the risk of damage, in some circumstances even serious, to property, plants or animals. Install the appliance on a solid wall which is not subject to vibration. Noisiness during operation. When drilling holes in the wall for installation purposes, take care not to damage any electrical wiring or existing piping.
product description Control panel 1 2 12 3 11 4 2 1 24 23 22 4 3 12 5 21 6 10 18 8 7 19 9 17 15 14 13 10 6 16 12 11 5 20 I 9 9 6 8 7 Legend : 1. Display 2. Domestic Hot Water temperature adjustment button +/(only for Clas HE EVO models) 3. MODE button (Operation mode selection (summer/winter) 4. Pressure gauge 5. Auto Function and/or Comfort Function enable/disable button (Comfort function only for Clas HE EVO models) 6. ESC button - reserved for technical assistance 7.
product description Overall view CLAS HE EVO CLAS HE EVO SYSTEM 1 1 24 24 2 23 2 23 3 3 22 22 4 21 4 21 5 5 20 6 6 20 7 7 8 19 9 9 10 10 15 16 12 12 14 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 12. 14. 16. 17. 18. 19. 20. 21. 22. 23. 24. 19 14 Flue connector Manual air vent Main heat exchanger Detection electrode C.H. Return temperature probe C.H. Flow temperature probe Silencer Secondary heat exchanger Gas valve Trap C.H. Pressure relief valve C.H.
product description Overall Dimensions 200 200 120 120 180 120 25 200 120 CLAS HE EVO SYSTEM 770 CLAS HE EVO 200 28 65 150 315 mod. 24 385 mod. 30/38 67 67 65 A. Central Heating Flow B. Domestic Hot Water Outlet C. Gas Inlet D. Domestic Cold Water Inlet E. Central Heating Return F. Safety Relief Valve 300 Minimum clearances In order to allow easy access to the boiler for maintenance operations, The boiler must be installed in accordance with the clearances stated below.
product description POWER SPECIFICATIONS GENERAL NOTE Technical Data Model: CLAS HE EVO CE Certification (pin) Max/min nominal calorific flow rate (Pci) Qn KW Max/min nominal calorific flow rate (Pcs) Qn KW 24.4/6.1 31.1/7.2 34.4/8.3 Domestic hot water max/min nominal calorific flow rate (Pci) Qn KW 26.0/5.5 30.0/6.5 38.0/7.5 Domestic hot water max/min nominal calorific flow rate (Pcs) Qn KW 28.9/6.1 33.3/7.2 42.2/8.3 Max/min power output (80°C-60°C) Pn KW 21.5/5.4 27.3/6.3 30.
POWER SPECIFICATIONS GENERAL NOTE product description Model: CLAS HE EVO SYSTEM CE Certification (pin) Max/min nominal calorific flow rate (Pci) Qn 30 kW C13(X)-C23-C33(X)-C43(X)-C53(X)-C63(X) C83(X)-C93(X)-B23-B23P-B33 18.0/4.5 22.0/5.5 28.5/6.5 Max/min nominal calorific flow rate (Pcs) Qn kW 20.0/5.0 24.4/6.1 31.1/7.2 Max/min power output (80°C-60°C) Pn kW 17.6/4.4 21.5/5.4 27.3/6.3 Max/min power output (50°C-30°C) Pn kW 19.1/4.7 23.3/5.7 29.7/6.8 % 98.0 97.8 97.
installation Reference Standards In the United Kingdom, the installation and initial start-up of the boiler must be by a Gas Safe registered installer in accordance with the installation standards currently in effect, as well as with any and all local health and safety standards i.e. Gas Safe. In the Republic of Ireland the installation and initial start-up of the appliance must be carried out by a Competent Person in accordance with the current edition of I.S.
installation Gas Supply The gas installation and tightness testing must be in accordance with the requirements of BS6891. Ensure that the pipe size is adequate for demand including other gas appliances on the same supply. Electrical Supply The appliance requires an earthed 230V - 50 Hz supply and must be in accordance with current I.E.E. regulations. It must also be possible to be able to completely isolate the appliance electrically.
installation Codensate Discharge The condensate discharge hose from the boiler must have a continuous fall of 2.5o and must be inserted by at least 50mm into a suitable acid resistant pipe - e.g. plastic waste or overflow pipe. The condensate discharge pipe must have a minimum diameter of 22mm, must have a continuous fall and preferably be installed and terminated to prevent freezing. The discharge pipe must be terminated in a suitable position: i) 2.
installation Installing the Boiler Please check that you are familiar with the installation requirement before commencing work (pages 11 - 15).
installation Gas connection Make sure, using the labels on the packaging and the data plate on the appliance itself, that the boiler is in the correct country and that the gas category for which the boiler was designed corresponds to one of the categories available in the country where it will be used. The gas supply piping must be created and measured out in compliance with specific legal requirements and in accordance with the maximum power of the boiler.
installation To calculate the size of the heating installation, refer to the "Available pressure" graph below. Graph representing the available circulation pump pressure ΔT20oC CLAS HE EVO 38 30 24 If the outlet temperature is too high, the boiler will stop both domestic hot water and the heating production and the error code 1 16 “floor thermostat contact open” will appear on the display. The boiler will restart when the thermostat is closed during automatic resetting.
installation Water circuit diagram 1 1 22 3 21 4 20 5 22 3 21 4 5 20 6 6 19 19 7 18 18 8 17 16 10 11 15 14 13 12 A 1. 3. 4. 5. 6. 7. 8. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. B C D E 8 17 10 11 12 14 A C E Manual air vent Burner Detection electrode C.H. flow temperature probe C.H. return temperature probe Secondary heat exchanger C.H. pressure relief valve By-pass Drain valve Condensate trap Filling loop C.H. circuit filter D.H.W.
installation Connecting the Flue Flue System The provision for satisfactory flue termination must be made as described in BS 5440-1. The appliance must be installed so that the flue terminal is exposed to outdoor air. The terminal must not discharge into another room or space such as an outhouse or lean-to. It is important that the position of the terminal allows a free passage of air across it at all times.
installation Warning The exhaust gas ducts must not be in contact with or close to inflammable material and must not pass through building structures or walls made of inflammable material. When replacing an old appliance, the flue system must be changed. Important Ensure that the flue is not blocked. Ensure that the flue is supported and assembled in accordance with these instructions.
installation Clamp Screws Seal Fig. 4 Fitting the 5” Flue (Ø 80 / 125 Horizontal/vertical) Once the boiler has been positioned on the wall, it is necessary to insert the Ø80/125 adaptor (Fig. 5) for both horizontal and vertical flue runs into the boiler flue socket (not supplied with flue kit Part No 3318095). Push the adaptor onto the boilers flue connection, grease the seals then add extensions or elbows as required, secure the adaptor, using the clamp and screws provided.
installation Fitting the Coaxial Flue (Ø 60 / 100 Vertical) Note: See table for maximum and minimum flue runs. Contents: 1x Conical Adaptor (60/100mm) 1x Vertical Flue Kit (80/125mm) The vertical flue kit is supplied with a specially designed weather proof terminal fitted, it can be used either with a flat roof or a pitched roof.
installation Fitting the Twin Pipe (Ø80 / 80) When siting the twin flue pipe, the air intake and exhaust terminals must terminate on the same wall, the centres of the terminals must be a minimum of 280 mm apart and the air intake must not be sited above the exhaust terminal (refer to Fig. 10). The air intake pipe can be run horizontally, however, the terminal and the final 1 metre of flue must be installed either horizontally or with a slight fall away from the boiler to avoid rain ingress.
installation 180 105 195 120 Fig. 9 AIR INTAKE MUST NOT BE FITTED ABOVE THE EXHAUST AIR INTAKE EXHAUST AIR INTAKE Fig. 10 For coaxial systems, the maximum development value, mentioned in the table below also takes into account an elbow. For twin flue systems the maximum development value, mentioned in the table includes the exhaust gas/air intake terminal.
installation Table of flue gas exhaust duct lengths Maximum Extension Exhaust-air (m) FLUE TYPE Coaxial System CLAS HE EVO Diameter of pipe (mm) CLAS HE EVO SYSTEM 24 30 38 18 24 30 C13 C33 C43 12 10 7 14 12 10 ø 60/100 C13 C33 C43 36 30 20 42 36 30 ø 80/125 C13 24/24 26/26 16/16 36/36 24/24 26/26 C33 40/40 50/50 28/28 60/60 40/40 50/50 C43 24/24 26/26 16/16 36/36 24/24 26/26 S1 = S2 Twin-pipe System C53 S1 + S2 60 50 S1 + S2 35 50 60 50 S1 = Air inta
installation WARNING Before performing any work on the boiler, first disconnect it from the electrical power supply using the external bipolar switch and remove the fuse. Electrical connections For increased safety, ask a qualified technician to perform a thorough check of the electrical system. The manufacturer is not responsible for any damage caused by the lack of a suitable earthing system or by the malfunctioning of the electricity mains supply.
installation Room Thermostat / Remote Clock Connection To connect a room thermostat, it is necessary to: 1. Open the control panel 2. Loosen the cable clamp using a screwdriver and insert the wires leading from the room thermostat 3. Connect the wires to the terminals as indicated in the figure below, removing the link 4. If a remote time clock is to be fitted, using a volt free switching time clock connect the switching wires from the time clock following points 1 - 3 above 5.
installation Fitting instructions for: • Internal mechanical time clock • Internal RF receiver for Ariston programmable room thermostat These instructions to be used in conjunction with the appliance installation instructions. Ensure the appliance is electrically isolated before working on the appliance. Remove the outer casing, and remove the front control panel by removing the 2 securing screws.
installation Electrical diagram For increased safety, ask a qualified technician to perform a thorough check of the electrical system. The manufacturer is not responsible for any damage caused by the lack of a suitable earthing system or by the malfunctioning of the electricity mains supply.
installation CLAS HE EVO SYSTEM Peripheral unit SOL TA1 BUS - Remote Control (modulating device) TA2/FLOOR - Underfloor heating thermostat N L HV connections TNK CN19 B FLOOR BUS TA2 SE CN1 T Peripheral unit connection 1 1 N L FLAME CN14 CN4 CN9 1 CN6 1 CN25 1 1 1 LV connections 1 CN3 Room Thermostat 2 SE - Outdoor Sensor SOL - Solar temperature probe TA1 - Room thermostat 1 1 CN8 CN11 B BUS TA2 SE TNK SOL TA1 CN1 T 1 HV connection Gr CN19 N L N L Bk Rd Bk Wh Mo
installation S plan wiring diagram. HW CH ON OFF ON OFF L N E REMOTE 2 CHANNEL PROGRAMMER LN 240V 3AMP L N Earths omitted for clarity MOTOR C/H 2 PORT VALVE TERMINAL STRIP R/STAT CYL STAT L N BUS TA2 Boiler SE Remove Link TNK SOL TA1 Note: Boiler switching on TA1 is low voltage, use a seperate cable to supply TA1. Do not use 5 core cable.
installation S plan wiring diagram using an outside sensor. ON OFF ON OFF L N E REMOTE 2 CHANNEL PROGRAMMER LN 240V 3AMP L N TERMINAL STRIP Earths omitted for clarity MOTOR C/H 2 PORT VALVE R/STAT CYL STAT Change parameter: 223 from 0 to 1 521 from 1 to 3 421 from 1 to 0 Activate Auto Function L N Outside sensor Remove Links BUS TA2 SE TNK SOL TA1 Boiler Note: Boiler switching on TA1 & TA2 is low voltage. Use a separate cable to supply TA1 & TA2.
commissioning Initial preparation Thermo UK Ltd support the benchmark initiative. On pages pages 69 and 70 of this manual the Benchmark Commissioning Checklist and Service interval Record can be found. It is important that this is completed in the presence of your customer, they are shown how to use it, and it is signed by them. Please instruct your customer that they must have this manual with them whenever they contact a service engineer or us.
commissioning FIRST IGNITION OPERATION Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installer . . . . . . . . . . . . . . . . . . . . . . . . . . 1. Check the electrical supply. 2. Check the type of gas and change the gas if necessary. 3. Check the gas tightness. Complete Complete Complete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4. Measure the gas inlet. 5. Check the Flue 6. Fill the installation.
commissioning Ignition procedure Press the ON/OFF button on the control panel to switch on the boiler. The display shows: ● the operating mode: winter summer Only heating - CLAS HE EVO SYSTEM ● The figures indicate: - the flow temperature when no heating requests have been made - the flow temperature in central heating mode - the temperature of the hot water set in domestic hot water The carrying out of certain functions is shown: Deaeration cycle started Centrl Heating Post-circulation D.H.W.
commissioning Combustion checking procedure The order of operations for this procedure must always be respected. Operation 1 - Supply pressure check Loosen the screw 1 and insert the pressure gauge connection pipe into the pipe tap. Switch the boiler on at maximum power. To activate combustion test function: - Press the mode selector to ensure the + icons displayed. - Pres & hold the reset button for 10 seconds. ‘Test’ will appear on the screen. Ensure the boiler is on max power by rotating the encoder.
commissioning Operation 4 - Checking the CO2 at minimum gas flow With the Test function active, rotate the encoder to select the icom and . The boiler is forced to the minimum power. Wait 1 minute for the boiler to stabilise before carrying out the combustion analyses. If the CO2 value (%) read differs by 0.5 % from the value found, then adjust the gas valve following the instructions below, otherwise move directly onto operation 5.
commissioning Table summarising changes parameter Lower Wobbe index (15°C, 1013 mbar) ( MJ/m3) CLAS HE EVO CLAS HE EVO SYSTEM 18 24 30 38 G20 G31 G20 G31 G20 G31 G20 G31 45,67 70,69 45,67 70,69 45,67 70,69 45,67 70,69 Slow ignition 220 55 55 60 60 Minimum fan speed (%) 233 19 18 18 19 Maximum central heating fan speed (%) 234 85 76 78 78 Maximum D.H.
boiler protection devices Safety shut-off This type of error is “volatile”, which means that the boiler starts up again automatically as soon as the problem which caused the shut-off is removed; the error is indicated by the «Err» symbol which appears on the display and the error code. In fact, soon as the cause of the shutoff disappears, the boiler starts up again and continues to operate normally.
boiler protection devices Multi-zone Heating (Heating Zone Modules - optional) 7 01 Zone 2 outgoing sensor defective 7 02 Zone 2 return sensor defective 7 03 Zone 3 outgoing sensor defective 7 04 Zone 3 return sensor defective 7 05 Hydraulic separation sensor defective 7 06 Zone 2 overheating 7 07 Zone 3 overheating Anti-frost Device. The anti-frost function acts on the central heating flow temperature probe, independently from other regulations, when the electrical supply is turned on.
settings - adjustment - problem identification menus Accessing the settings - adjustment - problem identification menus The boiler can be used to manage the heating and domestic hot water production system in its entirety. Navigation within the menus enables the boiler system + connected peripheral units to be customised, optimising operation for maximum comfort and maximum saving. It also provides important information relating to the efficient operation of the boiler.
Description value default setting Parameter sub-menu menu settings - adjustment - problem identification menus SERVICE CODE Rotate encoder clockwise to select code 234 and press OK.
Description value default setting Parameter sub-menu menu settings - adjustment - problem identification menus 2 2 4 4 BOILER PARAMETER - PART 2 3 Post-ventilation after heating request 2 4 4 2 2 2 4 4 4 5 6 7 2 2 4 4 8 9 2 2 5 5 DOMESTIC HOT WATER PARAMETER 0 COMFORT function CLAS HE EVO 2 5 1 2 5 2 2 5 3 2 5 4 2 5 5 Comfort Anti-cycling Time from 0 to 120 (minutes) 0 CLAS HE EVO Hot water flow delay from 5 to 200 (0.
value 2 2 7 7 TEST & UTILITIES 0 Test mode 2 7 1 2 2 8 8 RESET MENU’ 2 0 Automatically resetting to the default setting in menu 2 4 ZONE 1 PARAMETER 4 4 0 0 TEST+ TEST+ TEST+ Bleed cycle activation can also be obtained by pressing the Reset button for 10 seconds. The function is deactivated after 30 minutes or by pressing Reset see First Ignition parag. = Max Heating power = Max DHW power = Minimum power.
4 Description value default setting Parameter sub-menu menu settings - adjustment - problem identification menus 2 3 5 from - 7 to + 7 (low temperature) 0 from - 14 to + 14 (high temperature) To adapt the thermal curve to the appliance requirements, it is possible to perform a parallel shift of the curve in order to alter the calculated flow temperature and therefore the ambient temperature.
Description value default setting Parameter sub-menu menu settings - adjustment - problem identification menus 5 2 4 Compensation from 0 to 20 20 5 2 5 Zone 2 heating MAXIMUM temperature setting 5 2 6 Zone 2 heating MINIMUM temperature setting from 35 to 85 °C from 20 to 45 °C from 35 to 85 °C from 20 to 45 °C 82 45 35 25 5 5 3 3 DIAGNOSTICS 4 Zone 2 heat request 6 6 6 ZONE 3 PARAMETER 0 ZONE 3 TEMPERATURE SETTING 0 2 Heating fixed temperature setting “Heating fixed temp” 6 6 2
Description 6 6 3 3 8 8 8 SERVICE PARAMETERS 1 BOILER STATISTICS 1 0 Number of hours burner operating in heater mode (xxh/10) 8 1 1 Number of hours burner operating in hot water mode (xxh/10) 8 1 2 Number of flame separations (nr/10) 8 1 3 Number of ignition cycles (nr/10) 8 1 4 Average length of heating request (minutes) 8 8 2 2 BOILER 1 Fan Status 8 8 2 2 2 3 Fan speed (x100) rpm Circulation pump speed 8 2 4 Diverter valve position 8 8 8 8 8 8 8 2 2 3 3 3 4 4 5 D.H.W.
maintenance Important Maintenance is an essential part of the safe and efficient operation of the boiler and ensures its durability. It should be performed according to the instructions given in current legislation. Perform combustion analysis regularly in order to check the operating efficiency of the boiler and to make sure any polluting substances released are within the boudaries set by current legislation.
MAINTENANCE GUIDE 1. GENERAL ACCESS Lower the electrical front panel 1.
MAINTENANCE GUIDE 2. ELECTRICAL UNIT Unscrew the two screws and remove the cover 2.
MAINTENANCE GUIDE 2.2 Fuse 2.3 Main P.C.B. Tools Tools TIME Open the control box as above TIME 5 min After opening the control box, disconnect the elctrical plug connections 1 1 Remove the fuse Unhook and remove the P.C.B.
MAINTENANCE GUIDE 2.4 Display P.C.B. Tools TIME 5 min Unscrews the two screws and pull the assembly towards you 1 Disconnect the elctrical plug connections and unhook and remove the P.C.B.
MAINTENANCE GUIDE 3. HYDRAULIC UNIT Remove the clip and lift the motor from the diverter valve body. 3.1 RIGHT HAND HYDRAULIC BLOCK ASSEMBLY 2 Drain the boiler (see 3.3). Remove the clip and lift the diverter valve from the assembly. Legend: 1 - Diverter valve motor 2 - Diverter valve 3 - Auto air vent 4 - Primary water pressure switch 5 - Pump 6 - Central heating filter 8 - D.H.W. flow switch assembly 9 - Central Heating return 10 - Cold water inlet (D.H.W.) 11 - C.H. drain valve 3 3.2.
MAINTENANCE GUIDE 3.3 Draining 3.5 Primary water pressure sensor Tools Tools TIME 5 min Turn the drain valve anti-clockwise to open and drain the water from the boiler TIME 5 min Drain the boiler (see 3.3). Slide the fixing clip, (it is held captive) unplug the electrical connector and lift the sensor from the assembly. 1 1 3.4 Automatic air vent Tools TIME 5 min 2 Drain the boiler (see 3.3). Remove the clip and lift the AAV from the assembly.
MAINTENANCE GUIDE 3.6 Pump Remove the sensor (see 3.5) Tools TIME 10 min Drain the boiler (see 3.3). Remove the clip and the two screws 4 Remove the AAV (see 3.
MAINTENANCE GUIDE 3.7 C.H. Filter 3.8 D.H.W. Flow switch assembly Tools Tools TIME Drain the boiler (see 3.3). Remove the clip and remove the filter 5 min TIME 10 min Drain the boiler (see 3.3).
MAINTENANCE GUIDE 3.9 LEFT HAND HYDRAULIC BLOCK ASSEMBLY 3.11 Secondary heat exchanger Tools TIME 10 min Drain primary and domestic hot water circuits.
MAINTENANCE GUIDE 3.12 Condensate trap 3.13 Safety valve Tools Tools TIME Unscrew the condensate trap from the condensate body 5 min TIME 5 min Drain the boiler (see 3.3). Disconnect the discharge pipe.
MAINTENANCE GUIDE 3.14 By-pass assembly 3.15 Temperature sensors Tools Tools TIME 5 min Drain the boiler (see 3.3).
MAINTENANCE GUIDE Remove the clip and the temperature sensor 3.16 Manual Air vent Tools TIME 5 min Drain boiler (see 3.3) Unscrew and lift the manual air vent from the exchanger 3 IMPORTANT ! Do not use conducting paste for the contact sensors because it will alter the resistance value.
MAINTENANCE GUIDE 3.17 Main heat exchanger Remove the burner unit Tools TIME 20 min Drain boiler (see 3.3) Remove the silencer 3 1 Remove the four screws to free the heat exchanger Remove the two clips and disconnect the pipes. Isolate the gas supply and disconnect the gas pipe. Remove the four screws.
MAINTENANCE GUIDE 4.
MAINTENANCE GUIDE 4.1 Spark generator 4.2 Electrodes Tools Tools TIME Unplug the ignition electrode from the spark generator. TIME 5 min Unplug the electrodes 1 1 Remove the screws and pull the electrodes towards you.
MAINTENANCE GUIDE 4.3 Burner Remove the ten screws to free the burner door Tools TIME 15 min Remove the silencer 4 1 Pull the burner toward you Replace any gaskets that are damaged or showing signs of deterioration Isolate the gas supply. Disconnect the gas pipe. 5 2 Pull the assembly towards you 1 2 3 3 Fan & mixer venturi according to the model Power Length Venturi diameter 18 kW 104.6 mm Ø 14 24 kW 104.6 mm Ø 17 30 kW 135.
MAINTENANCE GUIDE Remove the three screws to free the fan. 4.4 Fan Tools TIME 15 min Remove the combustion assembly (see 4.
MAINTENANCE GUIDE 4.
MAINTENANCE GUIDE 5. ANNUAL MAINTENANCE Plate heat exchanger Maintenance Interval: As necessary How: To measure specification of DHW performance.
MAINTENANCE GUIDE Primary Heat exchanger Maintenance Interval: Annually How : Visual inspection / Clean as necessary Condensate trap Maintenance Interval: Annually or after cleaning primary heat exchanger How : Visual inspection / Clean as necessary / Add water before replacing Pump Maintenance Interval: At the first ignition and annually How: Check that the AAV is open / Visual inspection / Clean as necessary 67
Failure to install and commission according to the manufacturer’s instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty. This does not affect the customer’s statutory rights.
Service Record It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed. Service Provider Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s instructions. Always use the manufacturer’s specified spare part when replacing controls. Service 1 Date: Service 2 Date: Engineer Name: Engineer Name: Company Name: Company Name: Telephone No.
Technical Advice: 0333 240 7777 Customer Service: 0333 240 8777 420010439400 Ariston Thermo UK Ltd Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone: (01494) 755600 Fax: (01494) 459775 Internet: www.ariston.co.
