Ariston CLAS HE R 12 Installation And Servicing Instructions Download Page 1

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Gas fired condensing wall hung boiler

G.C.N : 41-116 - 30 (12 kW)

G.C.N : 41-116 - 31 (18 kW)

G.C.N : 41-116 - 32 (24 kW)

CLAS HE R 12

CLAS HE R 18

CLAS HE R 24

Country of destination GB, IE

Summary of Contents for CLAS HE R 12

Page 1: ... Gas fired condensing wall hung boiler G C N 41 116 30 12 kW G C N 41 116 31 18 kW G C N 41 116 32 24 kW CLAS HE R 12 CLAS HE R 18 CLAS HE R 24 Country of destination GB IE ...

Page 2: ...itting the Twin Pipe Ø 80 80 25 Table of Flue Gas Exhaust Duct Lengths 27 Electrical Connections 29 Peripheral Unit Connection 29 Electrical Diagram 30 Wiring diagrams 31 Commissioning Initial Preparation 35 Electricity Supply 35 Filling the Heating System 35 Gas Supply 35 Water Treatment 35 First Igniton Operation 36 Ignition procedure 37 Test Function and Combustion Analysis 39 AUTO Function 40 ...

Page 3: ...d by contacting the MTS Technical and Customer Service Departments at High Wycombe TECHNICAL DEPARTMENT CUSTOMER SERVICE DEPARTMENT Tel 0870 241 8180 Tel 0870 600 9888 Fax 01494 459775 Fax 01494 459775 GUARANTEE The manufacturer s guarantee is for 2 years from the date of purchase The guarantee is invalidated if the appliance is not installed in accordance with the recommendations made herein or i...

Page 4: ...elf Contact a qualified professional instead Before any maintenance or repair work is performed on the boiler make sure you have disconnected it from the electricity supply by switching the external bipolar switch to the OFF position and removing the fuse All repairs which should only be performed using original spare parts should be carried out by a qualified professional Failure to comply with t...

Page 5: ...any rolling ladders are positioned securely that they are suitably strong that the steps are intact and not slippery and that the ladders are fitted with handrails on either side of the ladder and parapets on the landing Personal injury caused by falling from a height During all work carried out at a certain height generally with a difference in height of more than two metres make sure that parape...

Page 6: ...Reset button 3 Red indicator lockout light 4 Button _ 5 Temperature regulation knob 6 Esc button 7 Menu OK button Programming key 8 Button 9 ON OFF button Green indicator ON OFF 10 Blue indicator burner ON 11 Green indicator Auto function 12 Auto button To activate Thermoregulation ...

Page 7: ... probe 6 C H Flow temperature probe 7 Manual air vent 8 Gas valve 9 Trap 10 Electrical box 11 Gas tap 12 Display box 13 Electrical connection box 14 Modulating fan 15 Ignition electrodes 16 Ignitor 17 Thermal fuse 18 Combustion analysis test point 19 Flue connector Overall view 1 2 3 4 7 5 6 8 9 10 11 18 19 17 16 15 14 13 12 ...

Page 8: ...5 595 49 161 292 12 18 24 kW 362 30 kW 135 162 665 44 5 Overall Dimensions 450 300 250 5 5 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 ...

Page 9: ...alorific flow rate efficiency 60 80 C Hi Hs 94 3 84 9 94 7 85 3 Efficiency rating dir 92 42 EEC stars Sedbuk Band Rating band A 90 1 A 90 1 Loss when stopped T 50 C 0 3 0 2 Loss of burner gas when operating 2 2 2 4 EMISSIONS Available air pressure Pa 53 91 NoX class less than 70mg kWh class 5 5 Flue gas temperature G20 80 C 60 C C 65 69 CO2 content G20 80 C 60 C 9 0 9 2 CO content 0 O2 80 C 60 C p...

Page 10: ... rate efficiency 60 80 C Hi Hs 94 3 84 9 Efficiency rating dir 92 42 EEC stars Sedbuk Band Rating band A 90 3 Loss when stopped T 50 C 0 2 Loss of burner gas when operating 2 5 EMISSIONS Available air pressure Pa 137 NoX class less than 70mg kWh class 5 Flue gas temperature G20 80 C 60 C C 72 CO2 content G20 80 C 60 C 9 3 CO content 0 O2 80 C 60 C ppm 180 O2 content G20 80 C 60 C 4 0 Maximum flue ...

Page 11: ...heating systems BS 5546 1990 Installation of hot water supplies for domestic purposes BS 5440 1 2008 Flues BS 5440 2 2008 Air supply BS 5449 1990 Forced circulation hot water systems BS 6798 2000 Installation of gas fired hot water boilers of rated input not exceeding 70kW BS 6891 1989 Installation of low pressure gas pipes up to 28mm BS 7671 2001 IEE Wiring Regulations BS 4814 1990 Specification ...

Page 12: ...should be via a 3 amp double pole fused isolating switch with contact separation of at least 3mm on both poles Alternatively a fused 3 amp 3 pin plug and unswitched socket may be used provided it is not used in a room containing a bath or shower it should only supply the appliance Automatic by pass Ariston recommend that an automatic by pass is installed a minimum of 1 5 metres away from the boile...

Page 13: ... from the boiler to the F E Feed Expansion tank should be configured as shown in the fig below Heating Circuit Boiler 15mm Min Automatic By Pass Pump 2M Minimum 150mm Max 500mm Minimum Height 22mm Min Vent Pipe 15mm Min Cold Feed Cylinder R F Return Flow Return Flow ...

Page 14: ...d feed shall be unrestricted The F E tank must be adequately supported and installed in accordance with relevant Building Regulations Pump specification The pump should be fitted on the flow pipe from the boiler and have isolating valves each side A variable duty pump should be set to give a tempe rature differential of no greater than 20ºC Draining tap A draining tap must be provided at all the l...

Page 15: ...boiler circuit and replace it when the amount measured is out of the range stipulated by the manufacturer 7 pH 8 DO NOT MIX DIFFERENT TYPES OF ANTI FREEZE In under floor systems the use of plastic pipes without protection against penetration of oxygen through the walls can cause corrosion of the systems metal parts metal piping boiler etc through the formation of oxides and bacterial agents To pre...

Page 16: ...am of the washing machine sink If the connection is downstream of the waste trap then an additional trap giving a minimum water seal of 75mm and an air break must be incorporated in the pipe run as above iii Terminating into a gully below the grid level but above the water level iv Into a soakaway Note If any condensate pipework is to be installed externally then it should be kept to a minimum and...

Page 17: ...square on the wall Remove the boiler from its packaging Place the boiler on the hanging bracket Note The appliance must not be fitted on a combustible wall surface Connecting the boiler to the system Remove the boiler casing as described on page 19 Remove the cap and connect the gas isolation valve to the boiler using the washer provided C page 18 Filling the system condensate discharge Fill the c...

Page 18: ...ith the maximum power of the boiler ensure the gas isolation valve is connected correctly see drawing opposite Check that the supplied gas corresponds to the type of gas for which the boiler was designed see the data plate located on the appliance itself It is also important to check that the pressure of the gas methane or LPG you will be using to feed the boiler is suitable because if it is insuf...

Page 19: ...ectrical power supply using the external bipolar switch removing the fuse and shutting off the gas valve To access the inside of the boiler the following is necessary 1 Loosen the two screws on the front casing a pull it forwards and unhook it from the upper pins b 3 Remove the control panel c 4 Unhookthetwoclipsonthecombustionchamber panel and lift off d b d a c ...

Page 20: ... cap on the trap positioned under neath the boiler fill it with water and refit it Warning Insufficient water in the trap can temporarily cause the flue gas to be expelled into the surrounding ambient air Water circuit diagram 2 1 4 3 6 7 8 5 A B C 1 C H flow temperature probe 2 C H return temperature probe 3 Burner 4 Detection electrode 5 Condensate trap 6 Modulating fan 7 Ignition electrodes 8 T...

Page 21: ...st be consi dered If the terminal is less than 2 metres above a balcony above ground or above a flat roof to which people have access then a suitable stain less steel terminal guard must be fitted The minimum acceptable spacing from the ter minal to obstructions and ventilation openings are specified in Fig 1 Fig 1 A Directly above or below an opening window etc 300 mm B Horizontally to an opening...

Page 22: ...act X dimension of 811mm Measure the distance from the face of the external wall to the face of the flue elbow X Fig 2 this figure must now be subtracted from 811mm you now have the total amount to be cut from the plain end of the flue Draw a circle around the outer flue and cut the flue to the required length taking care not to cut the inner flue next cut the inner flue ensuring that the length b...

Page 23: ...imply necessary to push them together no clamps are necessary to secure the flue components Before proceeding to fit the flue ensure that the ma ximum flue length has not been exceeded See the tables and that all elbows and bends have been taken into consideration the maximum flue length is 10 metres for each additional 90 elbow 1 metre must be subtracted from the total flue length and for each 45...

Page 24: ...see Fig 7 onto the exhaust manifold and secure with the clamp fit the vertical adaptor onto the vertical starter kit note there is no need to use a clamp to secure this as it is a push fit connection the vertical flue kit must then be inserted through the roof flashing this will ensure that the correct clearance above the roof is provided as the terminal is a fixed height Should extensions be requ...

Page 25: ...ous section of flue pipe or elbow check that the o ring is not dislodged when assembling the flue greasing the seal will aid assembly Twin pipe can also be converted back to coaxial flue to enable vertical termination with a coaxial kit by using the pipe bridge Twin Coaxial Adaptor Part No 3318089 When running the twin flue pipe vertically It is not possible to terminate concentrically hori zontal...

Page 26: ...flue pipes for the air intakes and exhaust gas ducts 2 If you need to insert elbows in the air intake and exhaust gas ducts you should consider for each one the equivalent length to be included in the flue length calculation 3 The exhaust terminal should jut above the roof by at least 0 5 m 4 The intake and exhaust gas ducts in Type C13 C53 must be installed on the same wall or where the exhaust i...

Page 27: ... 18 14 m 42 m 60 100 80 125 24 12 m 36 m 60 100 80 125 C 33 Flue gas exhaust and air suction duct from outside with roof terminal in the same range of pressure 12 16 m 56 m 60 100 80 125 18 10 m 49 m 60 100 80 125 24 12 m 42 m 60 100 80 125 C43 Individual or shared flue gas exhaust and air suction through flue ducting built into the building Note A specialist flue system is required 12 16 m 0 m 60...

Page 28: ...Flue gas exhaust and air suction duct from outside with the roof terminal in the same range of pressure 12 80 m S1 S2 80 80 18 70 m S1 S2 24 60 m S1 S2 C53 Flue gas exhaust leading outside and air suction duct through external wall not in the same range of pressure 12 112 m S1 S2 80 80 18 98 m S1 S2 24 84 m S1 S2 S1 Air intake S2 Flue gas exhaust S1 S2 Air intake and flue gas exhaust equal lengths...

Page 29: ...ions Power supply cable Important The appliance is supplied with a fly lead already connected this must be connected to a 240V supply fused at 3 Amp and must facilitate complete electrical isolation of the appliance by use of a fused double pole isolator having a contact separation of at least 3mm in all poles or alternatively by means of a 3A fused three pin plug and unswitched shuttered socket o...

Page 30: ...1 8 detection electrode Ignitor Gas valve L N FAN EARTH FLAME FLOW PUMP ZONE1FILLING PUMP SPEED 1 1 FUSE 2AT 1 2 3 4 1 2 3 4 5 6 6 1 1 2 3 4 Gas valve Ignitor BUS P C B e bus optional C H flow temp probe CN04 CN04 CN07 CN22 CN22 13 12 11 10 9 8 7 6 5 4 3 2 1 12 11 10 9 8 7 6 5 4 3 2 1 11 10 9 8 7 6 5 4 3 2 1 11 10 9 8 7 6 5 4 3 2 1 2 1 8 7 6 5 4 3 2 1 C H return temp probe Thermal fuse Modulating ...

Page 31: ...31 installation TERMINAL STRIP S Plan system utilizing external 2 channel programmer and Ariston unvented hot water cylinder ...

Page 32: ...32 installation S Plan system utilizing integral 2 channel programmer and Ariston unvented hot water cylinder ...

Page 33: ...33 installation Y Plan system utilizing external 2 channel programmer ...

Page 34: ...34 installation Y Plan system utilizing integral 2 channel programmer ...

Page 35: ...ire installation should be in accordance with the relevant standards In GB this is BS 6891 and in IE this is the current edition of I S 813 The connection on the the appliance is a 15mm nut and olive located at the rear of the gas isolating valve If the gas supply serves other appliances ensure that an adequate supply is available both to the boiler and the other appliances when they are in use at...

Page 36: ...stallation See page 21 28 Complete 6 Fill the installation See page 35 Complete 7 Check the hydraulic water tightness Complete 8 Set the heating power See page 38 Complete 9 Balance the central heating circuit Complete 10 Measure the gas inlet working pressure Complete 11 Check the boiler combustion Complete 12 Gas rate the appliance Complete 13 Explain to the end user how to use the boiler timer ...

Page 37: ...Check that the voltage and frequency of the electricity supply correspond to the data shown on the boiler data plate Make sure that the earthing connection is efficient First ignition 1 Make sure that The gas valve is closed The electrical connection has been properly carried out Make sure that the green yellow earthing wire is connected to an efficient earthing system Switch on the boiler by pres...

Page 38: ... 0 Heating ignition delay adjustment This parameter menu 2 sub menu 3 parameter 5 can be used to manually 0 or automatically 1 set the delay time before the subsequent reignition of the burner after it has switched off on reaching the desired temperature in central heating mode By selecting manual 0 it is possible to set the delay in minutes using the successive parameter menu 2 sub menu 3 paramet...

Page 39: ...pen the CO2 value drops by 0 3 If the values taken differ from the table adjust the gas valve following the procedure described below To adjust the CO2 value remove cap 2 adjust the CO2 content to 0 2 by turning setting screw 51 4 mm al len key unscrew to lower the CO2 value tighten to increase the CO2 value Set by turning the screw about a 1 4 of a turn then wait after each change for approximate...

Page 40: ...e in steps of 4 C may be set The value varies according to the type of system and installation If the Boost Time value 00 the function is not activated Example 2 Single zone system high temperature with on off room thermostat outdoor sensor In this case the following parameters must be set 4 21 Activation of temperature adjustment using sensors Select 3 outdoor sensor only 4 22 Temperature adjustm...

Page 41: ...permit a maximum of 5 resets in 15 minutes 5 presses of the RESET button at the 6th attempt within this 15 minute period the boiler will shut down and may only be operated again after the electricity supply has been disconnected If the shutdown is occasional or an isolated event this is not a problem Anti frost Device The anti frost function acts on the central heating flow temperature probe indep...

Page 42: ...tons or to select a sub menu for example 230 8 Press the Menu Ok button to access the sub menu parameters the three figures will flash for example 230 9 Press the buttons or to select a parameter for example 231 10 Press the Menu Ok button to access the parameter the display will indicate the value e g 70 Note The parameter value will be displayed for 20 seconds then will begin to flash in alterna...

Page 43: ...6 NOT PRESENT 2 2 7 NOT PRESENT 2 2 8 Boiler Version Do not modify 0to5 0 RESERVED FOR TECHNICAL ASSISTANCE Only if the PCB is changed 2 3 BOILER Parameter Part 1 2 3 0 NOT PRESENT 2 3 1 Maximum heating power setting 0 to 99 see the gas setting table in commissioning 2 3 2 Domestic hot water maximum RPM percentage CANNOT BE MODIFIED 0 to 99 RESERVED FOR TECHNICAL ASSISTANCE Only if the gas or PCB ...

Page 44: ...c increase of the flow temperature calculated in increments of 4 C max 12 C If this parameter retains the value 00 this function is not active 2 4 5 NOT PRESENT 2 4 6 NOT PRESENT 2 4 7 Device indicator for heating circuit pressure 0 temperature sensor only 1 pressure switch at minimum 2 pressure sensor 0 RESERVED FOR TECHNICAL ASSISTANCE Only if the PCB is changed 2 4 8 NOT PRESENT 2 5 DOMESTIC HO...

Page 45: ...sen according to the type of appliance radiator and the heat losses present in the building temperatura di mandata all impianto bassa tempertaura alta tempertaura temperatura esterna valore di consegna temperatura ambiente C 20 25 15 30 40 50 60 70 80 90 100 C 10 2 5 3 0 3 5 2 0 1 5 1 2 1 0 0 8 0 6 0 4 0 2 5 0 5 10 15 20 C 4 2 3 Parallel shift 20 to 20 0 To adapt the thermal curve to the appliance...

Page 46: ...fixed flow temperature 1 device On Off 2 ambient sensor only 3 external sensor only 4 ambient sensor external sensor 0 To activate heating control press the AUTO button The Auto light is illuminate 5 2 2 NOT PRESENT 5 2 3 NOT PRESENT 5 2 4 NOT PRESENT 5 2 5 Zone 2 heating maximum temperature setting 35 to 82 C 82 if parameter 420 1 20 to 45 C 45 if parameter 420 0 5 2 6 Zone 2 heating minimum temp...

Page 47: ...ing button to select 234 and press the Menu button 8 2 BOILER 8 2 0 NOT PRESENT 8 2 1 Fan status ON or OFF 8 2 2 Fan speed x100 rpm 8 2 3 NOT PRESENT 8 2 4 NOT PRESENT 8 2 5 NOT PRESENT 8 2 6 NOT PRESENT 8 3 BOILERTEMPERATURE 8 3 0 Heating adjustment temperature C 8 3 1 Heating flow temperature in C 8 3 2 Heating backflow temperature in C 8 3 3 NOT PRESENT 8 4 SOLAR APPLIANCE ANDTANK 8 4 0 NOT PRE...

Page 48: ...s nr 10 8 6 4 NOT PRESENT 8 6 5 Average length of heating request minutes 8 7 E SY HOTLINE NOT ACTIVE 8 7 0 8 7 1 8 8 ERROR LIST 8 8 0 10 last errors from E00 to E99 This parameter allows the last 10 boiler errors flagged to be displayed indicating the day month and year When the parameter is accessed the errors are displayed listed from E00 to E99 For each error the following sequence is displaye...

Page 49: ... adjustment and monitoring parts are working correctly Check the flue system is sealed and operating correctly Draining procedures The heating system must be drained using the following procedure Switch off the boiler make sure the external bipolar switch is in the OFF position Open the system drain off cock and collect the escaping water in a container Empty the water from the lowest points of th...

Page 50: ...MAINTENANCE GUIDE 1 GENERAL ACCESS GENERAL ACCESS Tools Time 3 min 1 Remove the two screws Remove the front panel Lower the control panel 2 Remove the combustion chamber front panel by releasing the clips ...

Page 51: ...51 MAINTENANCE GUIDE 2 ELECTRICAL UNIT 2 1 CONTROL BOX ACCESS Tools Time 4 min 1 Pull and Lower the electrical box cover 2 2 FUSE Tools Time 4 min 1 Remove the fuse ...

Page 52: ...connectors Unscrew the two screws and remove the PCB 2 4 DISPLAY PCB Tools Time 7 min 1 Remove the two screws Remove the front panel Lower the door 2 Remove the control knob Unscrew the four screws and pull the assembly towards you Disconnect the electrical plug connectors unlock the four clamps and remove the PCB ...

Page 53: ...ORS Tools Time 5 min 1 NTC1 NTC2 NTC1 Black wires NTC2 Grey wires Unplug the electrical connectors Remove the clip and the temperature sensor IMPORTANT Do not use conducting paste for the contact sensors because it will alter the resistance value TEMPERATURE RESISTANCE kOmh 0 27 10 17 20 12 25 10 30 8 40 5 50 4 3 HYDRAULIC UNIT ...

Page 54: ...and dis connect the two pipes Disconnect electrical gas valve and electrode detection and ignition Remove the four screws and disconnect the gas pipe from the gas valve Remove the four screws to free the heat exchanger 2 Pull the heat exchanger towards you Twist the thermal fuse to remove ...

Page 55: ...55 MAINTENANCE GUIDE 1 2 3 5 4 6 7 8 9 LEGEND 1 Burner 6 Mixing tube 2 Fan 7 Detection electrode 3 Air inlet 8 Ignition electrode 4 Gas inlet 9 Spark generator 5 Gas valve 4 BURNER UNIT ...

Page 56: ...ENERATOR Tools Time 5 min 1 Unplug the ignition electrode from the spark generator Remove the screws and the spark generator 4 2 ELECTRODES Tools Time 6 min 1 Unplug the electrodes Remove the screws and pull the electrodes towards you ...

Page 57: ...he assembly towards you 2 Remove the three screws to free the burner door Pull the burner toward you Replace any gaskets that are damaged or showing signs of deterioration 1 Stainless Steel Burner 2 Ignition electrode 3 Detection electrode Power Length Venturi 12 kW 73 4 mm ø42 mm 18 kW 73 4 mm ø42 mm 24 kW 104 6 mm ø42 mm 30 kW 135 8 mm 1 2 3 Length ...

Page 58: ...ee screws to free the fan Twist the gas valve anti clockwise to disengage it from the fan 1 2 3 1 Venturi 2 Gasket 3 Fan Fan mixer venturi according to the model Power Fan Venturi diameter 12 kW EBM RG 128 45 W ø14 mm 18 kW EBM RG 128 45 W ø17 mm 24 kW EBM RG 128 45 W ø17 mm 30 kW EBM RG 128 45 W ø21 mm ...

Page 59: ...see 4 3 Twist the gas valve anti clockwise to disengage it from the fan Replacement Gas Valves are not factory set and will need to be set up see page 39 1 2 3 5 4 6 Gas inlet Gas outlet LEGEND 1 Venturi 4 Inlet test niple 2 Gas valve 5 Offset adjustment 3 Solenoids 6 Throttle adjustment ...

Page 60: ... Burner Maintenance Interval Annually How Visual inspection Clean as necessary Fan Maintenance Interval Annually How Visual inspection Clean as necessary 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 replaci...

Page 61: ...es ALL INSTALLATIONS If required by the manufacturer record the following CO2 OR CO ppm OR CO CO2 Ratio The heating and hot water system complies with the appropriate Building Regulations Yes The boiler and associated products have been installed and commissioned in accordance with the manufacturer s instructions Yes The operation of the boiler and system controls have been demonstrated to and und...

Page 62: ...Signature SERVICE 7 Date Energy Efficiency Checklist completed Yes No Engineer Name Company Name Telephone Number CORGI ID Number Comments Signature SERVICE 9 Date Energy Efficiency Checklist completed Yes No Engineer Name Company Name Telephone Number CORGI ID Number Comments Signature SERVICE 2 Date Energy Efficiency Checklist completed Yes No Engineer Name Company Name Telephone Number CORGI ID...

Page 63: ... 61314753 0134 ELECTRODE GASKET 60000286 0135 COMBUSTION CHAMBER LINING KIT 60000297 0136 DOOR GASKET 60000623 0400 GAS SECTION 0401 GAS VALVE 60000537 0407 FAN ASSY 60000622 0500 HYDRAULIC 0507 TEMPERATURE PROBE CLIP 990686 0600 ELECTRICAL BOX 0607 IGNITER 61002105 20 0615 PRINTED CIRCUIT BOARD 60000566 0616 PRINTED CIRCUIT BOARD DISPLAY 65104448 407 401 615 SHORT LIST 607 616 136 135 112 134 111...

Page 64: ...ark 2 High Wycombe Ballycoolin Bucks HP13 5FT Dublin 15 Telephone 01494 755600 Telephone 01 899 1500 Fax 01494 459775 Fax 01 899 1501 Internet www ariston co uk Internet www mtsgroup com ie E mail info uk mtsgroup com E mail info ie mtsgroup com Technical Advice 0870 241 8180 Technical Advice 01 437 0121 Customer Service 0870 600 9888 Customer Service 01 437 0121 ...

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