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Ariston Clas 24 35 GC 47 116 59

1. CLAS SYSTEM 21 28 FF Za U u vA M C m installation Gas Connection The local gas region contractor connects the gas meter to the service pipe If the gas supply for the boiler serves other appliances ensure that an adequate supply is available both to the boiler and the other appliances when they are in use at the same time Pipe work must be of an adequate size Pipes of a smaller size than the boiler inlet connection must not be used Water Connections View of the Boiler Connections Legend A Central Heating Flow B Domestic Hot Water Outlet Gas inlet D Domestic Cold Water Inlet E Central Heating Return F Safety Valve Outlet H Drain valve Cent
2. Max usable length 1340mm Min usable Max usable length of length 1100mm vertical kit 700mm Min usable length of vertical kit 500mm 16 Fitting the Coaxial Flue Vertical For Twin Pipe Instructions see page 17 Contents 1x Silicone O Ring 60mm 1x Elbow 900 2x Wall Seals Internal amp External 1x Aluminium Flue Pipe including Terminal Telescopic 60 100 2x Flue Clamps 8x Screws 2x Seals 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 see Figs 20 and 21 The Vertical flue kits maximum and minimum useable lengths with both flat and pitched roof flashings are indicated in Figs 20 and 21 Before proceeding to fit the flue ensure that the maximum flue length has not been exceeded and that all elbows and bends have been taken into consideration the maximum flue length is 4 metres for each additional 90 elbow 1 metre must be subtracted from the total flue length and for each 45 0 5 metres must be subtracted from the total flue length the offset and height of 2 x 45 can be seen in Fig 22b Mark the position of the flue hole in the ceiling and or roof see Fig 20 for distance from wall to the centre of the flue Cut a 125mm diameter ho
3. ED 62 SRO LIE ae 63 Benchmark Gas boiler commissioning checklist 65 This manual is integral essential part of the product It should be kept with the appliance so that it can be consulted by the user and our authorised personnel Please carefully read the instructions and notices about the unit contained in this manual as they provide important information regarding the safe installation use and maintenance of the product For operating instructions please consult the separate Users Manual general information General Instructions Read the instructions and recommendations in these Installation Servicing Instructions carefully to ensure proper installation use and maintenance of the appliance Keep this manual in a safe place You may need it for your own reference while Servicing Technicians or your installer may need to consult it in the future The CLAS FF is a combined appliance for the production of central heating C H and domestic hot water D H W FF models The CLAS FF SYSTEM is a system boiler designed for the production of C H only These appliances are for domestic use only and must be used only for the purpose for which they have been designed The manufacturer declines all liability for damage caused by improper or negligent use No asbestos or other h
4. 47 w yy HN COR PU 48 emer 48 Automatic dil VID seite u 49 Primary water pressure sensor 49 cs 50 e LM Pillku u nama amas 50 DAW Now Switch assembly usse te dere D Dre Pr RM 51 Left hand hydraulic block assembly 52 D H W Temperature sensor 53 EE yy y u uid Ubri HDD 53 Bypass rno teases 54 Seconday exchang er 54 Temperature sensor amp overheat thermostatl 55 Main 56 BAULA ONEA EAU I Ai 57 ar AEA E ON canam A N NEN A O uM 58 1 35 5 58 fer 59 PUVA 59 gU rc 60 Air pressure 60 Gas ValVe 61 Annual Maintenance
5. 16 15 14 13 9 8 user manual Initial operating procedures If the boiler is installed inside the apartment make sure that all provisions relating to the air inlet and room ventilation in compliance with current legislation are respected Check the water pressure on the display regularly and make sure that the figure is between 0 6 and1 5 bar when the system is cold If the pressure is just under the minimum value the display will request a filling procedure Re establish the correct pressure by filling loop If the pressure drops very frequently there may be a water leak at some point in the system If this is the case a plumber should be contacted Ignition procedure Press the ON OFF button on the control panel to switch on the boiler The display shows N 8 EL sami comfort The first figure indicates the operating mode Stand by Central heating request Heating post circulation Domestic hot water request Hot water post circulation Circulation pump anti freeze protection enabled burner anti freeze protection enabled fT The second and third 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 in domestic hot water mode the flow temperature in anti freeze mode Winter or summer function Turn the he
6. 29 Checking the minimum power 29 Checking the maximum c h power 30 Soit Light adusi MeN 30 Ignition Delay adjust elit I i n EIN ELIO ME EDEN REOR 30 Adjustment the Maximum absolute Heating 30 L C 31 Gas UENIRE NA 31 POUT TENG CHO Was u uuu uay 22 Boiler protection devices 33 Salely SUE 33 wee RM T 33 warning erat ai vipera Ra 33 Table summarising error codes 33 uuu uu 34 Combustion 34 Product of combustion Discharge Monitoring 34 34 settings adjustment problem identification menus 35 Menu 2 Boiler parameter a 36 Menu Boiler with storage and boiler with solar kit
7. O N Legend Display RESET button Red LED illuminated boiler lockout Heating System Pressure Gauge Selector knob for Summer Winter Central Heating Temperature Adjustment Knob PT ac DONI 6 Programming key 7 button 8 Escbutton 9 Programming key CLAS SYSTEM 21 FF CLAS SYSTEM 28 FF 16 15 13 12 10 11 12 13 14 15 16 11 8 Fig 1 Domestic Hot Water adjustment knob COMBI models Time clock optional ON OFF Switch COMFORT Function L E D COMBI models Heating only L E D SYSTEM models Green led auto function activate Auto button to active Thermoregulation COMFORT button COMBI models Heating only button SYSTEM models general information Overall wiew CLAS 24 30 FF CLAS SYSTEM 21 28 FF 1 Se ee f m k le ___ 24 2 Z fan gt 4 Olle CD N 4 8 S 4 DR S MEI MO 22 5
8. 8 D H W Flow Rate l min COMBI 8 Air Pressure Switch Status 0 Open 1 Closed settings adjustment problem identification parameter Description BOILER TEMPERTURE Set temperature Central Heating C 25 Flow Heating temperature C Return Heating temperature C Domestic Hot Water Temperature COMBI SOLAR amp STORAGE Storage Temperature B 1 Solar collector Temperature D H W Inlet Temperature NTC Storage Low Displayed only with Solar Kit or Storage Set point stratification external storage Kit OO CO qmm HP ATA 5 Solar pump run time 6 Collector overheat Temp Time SERVICE P C B Hardware version MEE 8 5 8 5 8 6 P C B Software version P C B BUS Software version STATISTICS Hours Burner On Central Heating h 10 Hours Burner On Domestic Hot Water h 10 Number of Flame Faults nr 10 e OO P ule 7 Number of ignition Cycles nr 10 NOT PRESENT 5 Heat request Duration NOT ACTIVE 8 8 ERROR HISTORY 8 8 Last 10 errors from E00 to E99 This parameter makes it possible to see the last 10 errors shown by the boiler as well as the relevant day month and year Access the parameter to bring up the sequence of errors from
9. 37 Menu 4 Zone 1 parametelr 38 Menu 5 Zone 2 parametelr 39 40 Menu 8 Service 40 Maintenance sssssss ss e 42 General Comis Sonde ndo A E E N 42 Operational testiera E EESE SEEEN 42 Draining FOS a PIT UU 42 Draining the D H W system and indirect cylinder 42 SS Ot 43 Bi aB aN 43 Op rationalCHHeckS u a 43 the end MO 43 Maintenance Guide A4 Gent at 44 EELEE uy 45 otim at apa aetati aetate br deant Pee du 45 gi e 45 Main PCR l 46 Bo gi aM M OT 46 c e 47 Richt hand hydraulic block assembly
10. Display PCB Tools re Unscrew the four screws and Lower the door and remove the two control knobs x Unclip the cover to remove x pull the assembly towards you Disconnect the electrical plug connectors unlock the four clamps and remove the PCB 46 maintenance guide Hydraulic Unit Right hand hydraulic block assembly CLAS 24 30 FF LEGEND Central heating filter 6 T Not applicable in UK 8 wawawa CLAS SYSTEM 21 28 FF 1 5 Central heating return 6 Central heating drain valve 47 maintenance guide 3 way valve SN O 5 ps l Unplug the diverter valve cable Drain the boiler see 3 3 EET the clip and lift the diverter valve from the assembly Draining Turn the drain valve anti clockwise to open and drain the water from the boiler 48 CLAS 24 30 FF Remove the ipa ani lift the mdr from the diverter valve body When reassembling ensure the diverter valve is aligned correctly maintenance guide Automatic air vent Drain boiler see 3 3 Remove the clip and lift the AAV from the assembly Primary water pressur sensor Drain boiler see 3 3 Remove the fixing clip unplug the electrical connector and lift the sensor from the assembly 49 maintenance guide Pump Drain boiler see 3 3 Remove the clip and the two screws Remove the sensor see 3 5 CH Filter Remove the clip 50 move the
11. N General setting C H Parameters Part 1 N N N C H Parameters Part 1 Domestic Hot Water Combi only 5 9 Menu 2 Reset to factory setting NO Solar amp Storage General setting Service code access reserved for qualified engineers Special setting Zone 1 Parameters BY WwW OG O win 0 Set point Zone1 1 Service code access reserved for qualifled engineers Zone 1 Setting UJ N Diagnostics Zone device mangement ne 2 Parameters Set point Zone2 Service code access reserved for qualified engineers Zone 2 Setting Diagnostics Zone device mangement Multizone Test amp Utilities Service Parameter 1 Service code access reserved for qualified engineers Boiler 4 5 5 5 5 5 5 5 7 8 8 Boiler Temperature Solar amp Storage Service Statistics NOT ACTIVE CO O OO parameters relating to each individual menu are listed in the following pages The various parameters can be accessed and modified using th Menu Ox button and the buttons see fig below The code of the menus and of each individual parameter will be shown on the display PROGRAMMING BUTTON The information relating to the menus and the individual parameters are indicated on the display To access Menu 2 open the cover and proceed as follows 1 Press the
12. SIGNATURE SIGNATURE GROUP Commercial subsidiaries MTS GB Limited MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459775 Internet www mtsgroup com uk E mail info uk mtsgroup com Technical Advice 0870 241 8180 Customer Service 0870 600 9888 MTS Heating Limited Damastown Industrial Park Damastown Avenue Mulhuddart Dublin 15 Telephone 01 810 3723 Fax 01 810 3727 Internet www mtsgroup com ie E mail info ie mtsgroup com Technical Advice 01 437 0121 Customer Service 01 437 0121 420010108501 09 2007 24 30 21 28 WALL HUNG GAS BOILER PEIC CLAS 24 FF CLAS 30 FF CLAS SYSTEM 21 FF CLAS SYSTEM 28 FF G C N G C N G C N G C N 47 116 59 24KW 47 116 61 30KW 41 116 27 21 41 116 28 28KW user Manual Dear Customer Thank you for choosing an ARISTON boiler We guarantee that your boiler is a reliable and technically sound product This manual provides detailed instructions and recommendations for proper installation use and maintenance Remember to keep this manual in a safe place for future reference i e by the gas meter Your local MTS Servicing Centre is at your complete disposal for all requirements The installation and first ignition of the boiler must be performed by qualified personnel in compliance with current national regulations regarding installation
13. Remove the four screws to free the manifold Manifold Isolate the gas supply Disconnect the electrodes as above Remove the four screws and pull Remove the compensation the assembly towards you flexible pipe and the two screws from the gas elbow maintenance guide Pull the assembly towards you Pull down the gas elbow to free the manifold 59 maintenance guide Remove the air pressure switch support and the condensate collector Remove the four screws and pull the fan towards you Air pressure switch Disengage the air pressure switch by unlock the four clamps and pivot it towards you Disconnect the air pressure switch wires 60 maintenance guide Gas valve Remove the screw to free the spark generator and the compensation flexible pipe Remove the screws to free the gas valve assembly Remove the four screws to free the gas part between the gas valve and the manifold Remove the three screws to free Gas valve assembly the gas inlet pipe 61 maintenance guide Annual Maintenance 62 Plate heat exchanqer Maintenance Interval As necessary How To measure specification of DHW performance By pass amp Safety valve Maintenance Interval Annually How Visual inspection Clean as necessary Central heating filter Maintenance Interval Annually How Visual inspection Clean as necessary Flow switch operation Maintenance Interval Annually How V
14. pp E 8 E 17 E 17 9 16 LN 16 10 f ID 15 8 14 9 F 13 a Z X X VX 9 34 Z X Fig 35 A B C D E A C E Legend 1 Fan A Central Heating Flow 2 Main Heat Exchanger B Domestic Hot Water Outlet 3 Overheat Thermostat C Gas Inlet 4 Central Heating Flow Temperature Probe D Cold Water Inlet 5 Burner E Central Heating Return 6 Ignition Electrodes 7 Gas Valve 8 Secondary Exchanger 9 Safety valve 10 Domestic Hot Water Temperature Probe 11 Automatic By pass 12 Drain valve 13 Central Heating Filter 14 D H W Flow Switch 15 Diverter valve 16 Pressure Gauge 17 Modulating Circulation Pump with air release valve 18 Detection electrode 19 Expansion vessel 20 Central Heating Return Temperature Probe 21 Air Pressure Switch 27 commissioning Initial Preparation MTS GB Limited support the Qezc marf2 initiative Within the information pack you will find a copy of the ogbook 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 their Gezc mar 2 log book with them whenever they contact a service engineer or 5 Preliminary
15. 24 30 21 28 WALL HUNG GAS BOILER PIE LEAVE THESE INSTRUCTIONS WITH THE END USER CLAS 24 FF CLAS 30 FF CLAS SYSTEM 21 FF CLAS SYSTEM 28 FF G C N 47 116 59 24KW G C N 47 116 61 30KW G C N 41 116 27 21KW G C N 41 116 28 28KW INDEX General Information 3 General Information DELE 3 COntror 4 a EUR Sm nu 5 Technical Information NR 6 Instal lation Reference Srarndalrds 8 Sitting the ss LLULLA 8 Overall dimensions 9 9 Monting the 10 Electrical CODICE IA IURIS 10 Gas E 11 Water CONNECTION 11 PDE WOK 11 es 11 11 Dial aeuum nui mese nr pua MM DT SL aM E 11 Safety valve discharge il GRAM FOROR UE YU UP UE 12 Air release GS A
16. accordance with 1100 1200 1300 Water byelaws Note The installer should ensure that there leaks as frequent filling of the heating system can lead to premature scaling of the main exchanger and failure of hydraulic components Domestic Water The domestic water must be in accordance with the relevant recommendation of BS 5546 1990 Copper tubing to BS EN 1057 1996 is recommended for water carrying pipe work and must be used for pipe work carrying drinking water a scale reducer should also be used to reduce the risk of scale forming in the domestic side of the heat exchanger installation Flue Connections Flue System The provision for satisfactory flue termination must be made in accordance with BS 5440 1 The appliance must be installed so that the flue terminal is exposed to outside air The terminal must not discharge into another room or space such as an outhouse or lean to Itisimportant that the position of the terminal allows a free passage of air across it at all times The terminal should be located with due regard for the damage or discolouration that might occur on buildings in the vicinity and consideration must be given to adjacent boundaries In cold or humid weather water vapour may condense on leaving the flue terminal The effect of such pluming must be considered If the terminal is less than 2 metres above a balcony above ground or above a flat roof to which people
17. use Regulations The installation of this appliance must be in accordance with the relevant requirements of the Local Building Regulations the current Wiring Regulations the bylaws of the local water authority in Scotland in accordance with the Building Standards Scotland Regulation and Health and Safety document No 635 Electricity at work regulations 1989 and in the Republic of Ireland with the current edition of I S 813 the Local Building Regulations IE C O S H H Materials used in the manufacture of this appliance are non hazardous and no special precautions are required when servicing Installation should also comply with the following British Standard Codes of Practice BS 7593 1992 Treatment of water in domestic hot water central heating systems BS 5546 1990 Installation of hot water supplies for domestic purposes BS 5440 1 2000 Flues BS 5440 2 2000 Air supply BS 5449 1990 Forced circulation hot water systems BS 6798 1987 Installation of gas fired hot water boilers of rated input not exceeding 60kW BS 6891 1989 Installation of low pressure gas pipe up to 28mm BS 7671 2001 IEE wiring regulations BS 4814 1990 Specification for expansion vessels BS 5482 1994 Installation of L P G and in the Republic of Ireland in accordance with the following Codes of Practice 1 5 813 Domestic Gas Installations Siting the Appliance The appliance may be installed in any room or indoor area although part
18. 40 to 82 C display only Room Temperature Zone 2 only active when the BUS device is connected Flow Temperature Zone 2 only active with MGZ MCM Kit Return Temperature Zone 2 only active with MGZ MCM Kit Set Temperature Zone 2 only active when the BUS device is connected Heat Request Zone 2 O OFF 1 ON Un UJ 3 LA et et N O 5 D II O TI TI II O Z O lt C cT lt 5 lt et G N 2 et 0 OFF 1 ON 2 Manual 0 OFF only active with MGZ MCM Kit 1 Open 2 Closed Pump control 0 1 5 5 MULTIZONE 5 5 Hydraulic Compensator T from 0 to 120 C Flow T Offset from 0 to 40 C Test Mode t Max Heating power Enabled also by pressing for 10 seconds rotate the enoder to select the different test t Max DHW power COMBI the Reset button This function is mode Minimum power deactivated automatically after 10 minutes or when the Esc button is pressed Air purge Function Press Menu Ok button to active 8 SERVICE PARAMETERS 8 Service code 222 Press to select code 234 and press 8 1 2 BOILER 2 Modulation Rate from 0 to 165 MA 2 1 ns _ 2 2 r 2 3 Pune _
19. 6 7 TT mir 8 E 7 Y I I 9 ee ae 40 LL B ll oe 12 j 13 14 15 x Fig 3 Fig 4 Legend 1 Flue connector 2 Air pressure switch 3 Condensate trap 4 Main Heat Exchanger 5 Overheat thermostat 6 Flow temperature probe 7 Burner 8 Ignition electrodes 9 Gasvalve 10 Spark generator 11 D H W temperature probe 12 Safety valve 3 bar 13 Secondary heat exchanger 14 Drain valve 15 D H W Flow switch 16 Circulation Pump with air release valve 17 Water pressure sensor 18 Diverter valve 19 Detection Electrode 20 Combustion Chamber Insulation Panel 21 Combustion Chamber 22 Expansion vessel 23 Fan 24 Combustion Analysis Test Point general information Technical Information Model Name CLAS 24 FF CLAS 30 FF gt CE certification 1312BR4793 1312BR4793 Boiler type C12 C32 C42 C52 B22 B32 Max min nominal heat input Hi kW 25 8 11 0 30 0 13 0 Max min nominal heat input Hs kW 28 7 12 2 33 3 14 4 Max min nominal heat input for hot water Hi kW 27 11 0 31 3 13 0 Max min nominal heat input for hot water Hs kW 30 12 2 34 8 14 4 Heat output max min kW 24 2 9 8 28 1 11 6 Heat output for hot water max min kW 26 2 9 8 29 5 11 6 Combustion efficiency at flue Hi Hs 95 0 93 9 Gross efficiency of n
20. Forced circulation 2 Double coil Electrical Mixing valve Collector Delta T pump ON Collector Delta T pump OFF 2 3 6 Kollectorkick 7 8 9 Recooling Function Gas storage set point Delta Collector Frost protection Temperature 4 ZONE1 PARAMETERS Select 1 or 2 only if the Solar Kit is installed Only with Solar Kit is installed Set Day Temperature Zona 1 from 1610 30 Set Night Temperature Zona 1 from 16 to 30 only active when the BUS device is connected Fix temperature central heating from 351085 C 4 1 Service code 222 SET ZONE 1 To set only with Fixed Flow Temperaure of Thermoregulation see 421 Rotate encoder clockwise to select code 234 and press Menu Ok Zone 1 Temperature range 0 Low Temperature DO NOT MODIFY 1 High Temperature ONLY FOR SERVICE Active only with MGZ MCM Kit Select Type of Thermoregulation 0 Fixed Flow Temperature 1 Basic Thermoregulation 2 Room Temperature only 3 Outdoor Temperature only 4 Room Outdoor Temperature 4 2 2 Zone1Slope from 0_2 to 3_5 129 When an outdoor sensor is used the boiler To enabled thermoregulation press Auto button The display show the symbol Only enabled when an outdoor sen sor is installed 35 30 25 20 High temperature c
21. Menu Ok button the first figure 80 0 will flash on the display 2 Press the button to select menu 200 3 Press the Menu Ok button the second figur on the display will flash and the access code 2 110 will be requested Caution The menus reserved for qualified technicians may only be accessed after setting the access code 4 Press the Menu Ok button 222 will appear on the display unit 5 Press the button to select code 2 6 Press the Menu Ox button to select the sub menu the second figure 9 0 will flash 7 Press button to select the sub menu for example 0 8 Press the Menu Ok button to access the sub menu parameters the third figure 2 3 will flash 9 Press the buttons to select the parameter then press the Menu Ok button 10 Press the or button to access the parameter the display will indicate the value e g 16 Note The parameter value will be displayed for 20 seconds then will begin to flash in alternation with the parameter e g 48 gt pat 11 Press the or button to select the new value e g 15 12 Press Menu Ok to save the change or press Esc to exit without saving To exit press the ESC button until the normal display screen is restored 35 settings adjustment problem identification menus parameter Description 2 BOILER PARAMETER 2 1 Service code 222 Press to select code 234
22. be found on pages and Fig 7 Should external controls be required the design of the external electrical circuits should be undertaken by a competent person Warning this appliance must be earthed External wiring to the appliance must be carried out by a competent person and be in accordance with the current I E E Regulations and applicable local regulations The appliance is supplied with a fly lead already connected this must be connected to a 240v supply fused at 3A and must facilitate complete electrical isolation of the appliance by the use of a fused double pole isolator having a contact separation of at least 3 mm in all poles or alternatively by means of a 3 A fused three pin plug and unswitched shuttered socket outlet both complying with BS 1363 The point of connection to the Electricity supply must be readily accessible and adjacent to the appliance unless the appliance is installed in a bathroom when this must be sited outside the bathroom 10 CLAS 24 30 C
23. bends installation When utilising the vertical flue system action must be taken to ensure that the flue is supported adequately to prevent the weight being transferred to the appliance flue connection When the flue passes through a ceiling or wooden floor there must be an air gap of 25mm between any part of the flue system and any combustible material The use of a ceiling plate will facilitate this Also when the flue passes from one room to another a fire stop must be fitted to prevent the passage of smoke or fire irrespective of the structural material through which the flue passes Fitting the Flue Twin Pipe Where it is not possible to terminate the flue within the distance permitted for coaxial flues the twin flue pipe can be used by fitting a special adaptor to the flue connector and using the aperture for the air intake located on top of the combustion chamber For twin flue installation it is most important to avoid any possible condense formation entering the appliance Should there be the possibility of condensation forming within the flue there are two options 1 Where condense will form but can be negated with insulated flue install the insulated flue with a fall of 5mm in every metre away from the boiler 2 The exhaust flue will have a fall of 3 back to the boiler and a suitable trap will be fitted on the exhaust as close to the boiler as possible condense will then be suitably disposed o
24. boiler manufacturer s instructions Always use the manufacturer s specified spare part when replacing all controls SERVICE 1 DATE ENGINEER NAME SERVICE 2 DATE COMPANY NAME ENGINEER NAME TEL No COMPANY NAME CORGI ID CARD SERIAL No TEL No COMMENTS CORGI ID CARD SERIAL No COMMENTS SIGNATURE SIGNATURE SERVICE 3 DATE ENGINEER NAME SERVICE 4 DATE COMPANY NAME ENGINEER NAME TEL No COMPANY NAME CORGI ID CARD SERIAL No TEL No COMMENTS CORGI ID CARD SERIAL No COMMENTS SIGNATURE SIGNATURE SERVICE 5 DATE ENGINEER NAME SERVICE 6 DATE COMPANY NAME ENGINEER NAME TEL No COMPANY NAME CORGI ID CARD SERIAL No TEL No COMMENTS CORGI ID CARD SERIAL No COMMENTS SIGNATURE SIGNATURE SERVICE 7 DATE ENGINEER NAME SERVICE 8 DATE COMPANY NAME ENGINEER NAME TEL No COMPANY NAME CORGI ID CARD SERIAL No TEL No COMMENTS CORGI ID CARD SERIAL No COMMENTS SIGNATURE SIGNATURE SERVICE 9 DATE ENGINEER NAME SERVICE 10 DATE COMPANY NAME ENGINEER NAME TEL No COMPANY NAME CORGI ID CARD SERIAL No TEL No COMMENTS CORGI ID CARD SERIAL No COMMENTS
25. burns smoke inhalation intoxication If there is a strong smell of gas turn off the main gas valve open all windows and call for assistance Explosions fires or intoxication P P P D gt gt P user manual Auto Function ambient temperature maximum user comfort It ensures the building stays at the ideal temperature whilst saving energy The AUTO function serves to optimise boiler performance while maintaining an optimum radiator temperature and auto The principle is that the water temperature at the boiler outlet is automatically adjusted depending on the interior Control Panel CLAS 24 FF 1 CLAS 30 FF 2 3 4 5 6 7 Legend 1 Display 2 RESET button 3 Red LED illuminated boiler lockout 4 Heating System Pressure Gauge 5 Selector knob for Summer Winter Central Heating Temperature Adjustment Knob 6 Programming key 7 Menu Ox button 8 Esc button 9 Programming key CLAS SYSTEM 21 FF CLAS SYSTEM 28 FF eset 16 15 14 13 12 11 10 14 16 Domestic Hot Water adjustment knob models Time clock optional ON OFF Switch COMFORT Function L E D COMBI models 8 Heating only L E D SYSTEM models Green led auto function activate Auro button to active Thermoregulation COMFORT button COMBI models Heating only button SYSTEM models
26. heating elements is usually set to a high value 70 80 C thereby ensuring effective heating during the few really cold winter days It then becomes excessive on less cold days of which there are many more typical of the autumn and winter seasons This leads to excessive room heating after the thermostat has been switched off resulting in energy waste and uncomfortable conditions inside the room The AUTO function takes control of the boiler and selects the best operating regime based on environmental conditions external devices connected to the boiler and the performance required It constantly decides at which power level to operate based on the environmental conditions and the room temperature required Change of gas type Our boilers are designed to function either with Natural Gas meth ane or L P G gas If you need to change from one gas to the other one of our Authorised Service Centres must be contacted to con vert the appliance Maintenance Schedule an annual maintenance check up for the boiler with a competent person Correct maintenance always results in savings in the cost of running the system Failure to arrange an annual service for the appliance will invalidate the second year of the manufacturers guarantee Mr GROUP Commercial subsidiaries MTS GB Limited MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459775 Internet www mtsgrou
27. mm B 60 mm 300 mm D 450 mm E 350 mm installation Mounting the Appliance After removing the boiler from its packaging remove the template from the box Note Pay particular attention to any test water that may spill from the appliance 90 Place the template in the position the appliance is to be mounted and after ensuring it is hanging squarely use it to drill the holes for the hanging bracket and flue pipe s NB For further information relating to the flue installation please refer to Flue Installation page 13 If the appliance is to be fitted on a wall of combustible material the wall must be protected by a sheet of fireproof material If the appliance is to be fitted into a timber framed building guidance should be sought from the Institute of Gas Engineers document Ref IGE UP 7 195 250 Drill the wall and plug using those supplied with the connections kit position the hanging bracket and secure with the wall bolts supplied assembl the connection kit and secure to the wall Position the appliance on the hanging bracket and connect the valves to the boiler connections see also Gas Connections Water Connections page 11 Electrical Connection For safety purposes have a competent person carefully check the electrical system in the property as the manufacturer will not be 770 725 580 830 80 80 60 100 0 80 125 held liable for dam
28. number 00 to number E99 The following data is shown in a sequence for each single error 0 error number 1 08 error code 8 8 Reset Error List Reset Ok Yes Esc No 41 maintenance Important Maintenance is an essential part of the safe and efflcient 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 relased are within the boudaries set by current legislation Before beginning maintenance work Disconnect the appliance from the electricity supply by turning the external bipolar switch to the OFF position Close the gas valve and the central heating and domestic hot water system valve After the work has been completed the initial settings will be restored General comments It is recommended that the following inspections be carried out on the boiler at least once a year 1 Check the seals in the water part and if necessary replace the gaskets and restore the seal to perfect working order 2 Checkthe seals in the gas part and if necessary replace the gaskets and restore the seal to perfect working order Visually check the overall condition of the boiler 4 Visually check the combustion and if necessary disassemble and clean the burner 5 Following the inspection detailed in
29. of room Secondary ventilation is not required with this boiler The boiler must be installed on a solid non combustible permanent wall to prevent access from the rear 200 200 gt lt 120 gt 120 gt lt lt installation 200 200 120 120 gt gt lt lt ED CLAS 24 30 FF CLAS SYSTEM 21 28 FF Y gt CLAS SYSTEM 21 28 FF Overall Dimensions Legend A Central Heating Flow 22mm nut amp olive B Domestic Hot Water Outlet 15mm nut amp olive Gas Inlet 15mm D Domestic Cold Water Inlet 15mm nut amp olive E Central Heating Return 22mm nut amp olive Clearances In order to allow access to the interior of the boiler for maintenance purposes the boiler must be installed in compliance with the minimum clearances indicated in Fig 6 A 450
30. of the temperature dropping below the freezing point the domestic hot water system must be drained as follows Turn off the general water valve for the household plumbing system Turn on all the hot water taps Empty the remaining water from the lowest points in the system where present Completion For the Republic of Ireland itis necessary to complete a Declaration of Conformity to indicate compliance to 1 5 813 example of this is given in the current edtion of I S 813 In addition it is necessary to complete the Benchmark Log Book Operational Checks 1 Theflue system must be visibly checked for soundness 2 On Central Heating allow the system to warm up and manipulate the Central Heating temperature control knob check the burner modulates up and down between the high and low settings 3 Rangerate the thermal power for Central Heating as detailed on page 30 4 Run the Domestic Hot Water manipulate the Domestic Hot Water temperature control knob to check the burner modulates up and down between the high and low settings COMBI only 5 Balance the Central Heating system until all return temperatures are correct and equal 6 Switch ON OFF button OFF disconnect the pressure Gauge retighten screw and relight boiler 7 Re examine Central Heating Domestic Hot Water and Cold Water supplies for soundness 8 Checktheappearance of the gasflame to assess the adequacy of the combustion air supply 9
31. off the gas valve When the work has been completed ask a qualified technician to check the efficiency of the ducting and the devices If the boiler should be out of use for a prolonged period it is recommended that the electrical power supply be disconnected and that the external gas cock be closed If low temperatures are expected the boiler and system pipe work should be drained in order to prevent frost damage Turn the boiler off and turn the external switch OFF to clean the exterior parts of the appliance Do not allow children or inexperienced persons to use the appliance without supervision CE labelling The CE mark guarantees that the appliance conforms to the follow ing directives 90 396 CEE relating to gas appliances 89 336 CEE relating to electromagnetic compatibility 92 42 CEE relating to energy efficiency 73 23 CEE relating to electrical safety GUARANTEE The appliance is guaranteed for 24 months from the date of purchase Aristons only obligation under the guarantee will be to repair or repla ce the faulty appliacnce at Aristons discretion This will be carried out where the fault arises from within defects in the appliance caused either by material or workmanship of the manufacturer This guarantee does not protect malfunction or damage arising from incorrect installation commissioning or maintenance procedures as laid out in the installation and servicing manual inefficient flue system po
32. on the exhaust MTS supply a suitable condense trap Part No 3318026 and recommend that this be used in the event that the flue may form condense 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 27 The air intake pipe can be run horizontally however the terminal and the final 1 metre of flue must be installed with a fall away from the boiler to avoid rain ingress It is also strongly recommended that the air intake pipe run be constructed of insulated pipe to prevent condense forming on the outside of the tube The maximum permissible flue length for twin flue is dependent on the type of installation For flue runs with the intake and exhaust pipes under the same atmospheric conditions Type 4 the maximum length is 44 metres 31kW for runs with the terminals under different atmospheric conditions Type 5 the exhaust terminal must extend 0 5 metres above the ridge of the roof this is not obligatory if the exhaust and air intake pipes are located on the same side of the building For Type 5 also the maximum permissible combined length is 40 metres The maximum length is reached by combining the total lengths of both the air intake and exhaust pipes Therefore a maximum length of 40 metres for example will allow a flue run of 20 metres f
33. point 3 disassemble and clean the combustion chamber if necessary 6 Following the inspection detailed in point 4 disassemble and clean the burner and injector if necessary 7 Cleaning the primary heat exchanger 8 Make sure the following heating safety devices are operating correctly temperature limit safety device 9 Make sure that the following gas part safety devices are operating correctly absence of gas or flame safety device ionisation 10 Check the efficiency of the domestic hot water production process test the flow rate and temperature 11 Perform a general inspection of the boiler operation 12 Remove oxide from the detection electrode using an emery cloth eM 42 Operational test After having carried out the maintenance operations fill the heating circuit at a pressure of approximately 1 0 bar and release the air from the system Fill the domestic hot water system at the same time Begin operating the boiler f necessary release the air from the heating system again Checkthe settings and make sure all the command adjustment and monitoring parts are working correctly Checkthe seal and that the system for the expulsion of fumes suction of comburent air is 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 and shut off the
34. pump to the right disengage Remove the AAV see 3 4 Remove the filter Disconnect the pipe and then Remove the pump maintenance guide DHW Flow switch assembly CLAS 24 30 FF Drain boiler see 3 3 Remove the clip and pull the flow switch assembly towards you Twist the flow switch assembly to disengage 51 maintenance guide Left hand hydraulic block assembly CLAS 24 30 FF 1 DHW temperature sensor 4 Safety valve 2 Left hand hydraulic block 5 Central heating flow 3 By pass assembly 6 Domestic hot water outlet CLAS SYSTEM 21 28 FF 1 Left hand hydraulic block 2 Safety valve amp By pass assembly 3 Central heating flow 52 maintenance guide D H W Temperature sensor CLAS 24 30 FF Isolate the cold water supply and drain the DHW circuit Sensor without wire and clip Lift the sensor from Unplug the DHW sensor and the assembly remove the clip Safety valve Drain boiler see 3 3 Disconnect the Remove the first clip on the left and discharge pipe pull the safety valve towards you 53 maintenance guide By pass assembly Drain boiler see 3 3 Remove the second clip and pull the assembly Push on the by pass to disengage it towards you Secondary heat exchanger CLAS 24 30 FF Drain primary and domestic hot water circuits Remove the two screws and remove the heat exchanger 54 maintenance guide Temperature sensors amp overheat thermostat Remove
35. the temperature of the radiators in line with the outdoor conditions in order to achieve and maintain the requested room temperature conditions Depending on the peripheral units connected and the number of zones controlled the boiler adjusts its flow temperature automatically The various corresponding parameters should therefore be set see adjustments menu To activate the function press the Auro button A Example 1 SINGLE ZONE SYSTEM HIGH TEMPERATURE WITH ON OFF ROOM THERMOSTAT In this case the following parameters must be set 421 Activation of temperature adjustment using sensors Select 01 Basic temperature adjustment 244 Boost Time optional The wait time for the flow temperature increase 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 421 Activation of temperature adjustment using sensors Select 03 outdoor sensor only 422 Temperature adjustment curve selection see page 39 Select the relevant curve according to the type of system installation heat insulation used in the building etc 423 Perform a parallel curve shift if necessary increasing or decreasing the set point temperature this may also be modified by the user using the heating tem
36. 0 80014 2 N 84014 ainjesadwiay 569 x H 9 N9 5 D01131 101294801 num 3INV 13 Aejdsiq N HHHH CN14 jeuondg 10sues 2 18 3 JS jeuondg 2 1 1 ZV l LONE 2186 9 48 Aje 29 yuVdS sv A 0 9 205 26 installation Water Circuit Diagram 1 21 A 21 3 3 y 20 5 zi j 7 P y D
37. 136 j Minimum operating room temperature 5 5 Electric system grades of protection IP X5D X5D Weight kg 31 31 Dimensions W x Hx D 400 770 315 400 770 315 general information Model Name CLAS SYSTEM CLAS SYSTEM E 21 28 FF CE certification pin 1312BR4793 1312BR4793 i Boiler type C12 C32 C42 C52 B22 B32 Max min nominal heat input Hi 25 87 11 0 30 0 13 0 Max min nominal heat input Hs 28 7 12 2 33 3 14 4 Max min nominal heat input for hot water Hi 27 11 0 31 3 13 0 Max min nominal heat input for hot water Hs 30 12 2 34 8 14 4 Heat output max min 24 2 9 8 28 1 11 6 Combustion efficiency at flue Hi Hs 95 0 93 9 P Gross efficiency of nominal heat input 60 80 C Hi Hs 94 8 84 5 93 6 84 3 2 Gross efficiency at 3096 at 47 C 5 93 6 84 3 93 2 83 9 5 Gross efficiency at minimum power 89 2 80 3 89 3 80 4 Number of efficiency stars Directive 92 42 EEC Rating Sedbuk class D D Ma heat loss to the casing AT 50 C 0 4 0 3 Heat loss through the flue when burner on 5 0 6 1 Heat loss through the flue when burner off 0 4 0 4 Residual discharge head 100 104 Nox class 3 3 E Flue fumes temperature G20 98 114 z CO2 content G20 6 6 6 4 CO content 0 0 40 92 O2 content2 G20 8 7 8 9 Max Discharge of Products of Combustion G20 97 67 5 Excess air 62 8 74 Load losse
38. 2 TEMPERATURE PROBE CLIP 990686 0638 AUTO AIR VENT WITH O RING 65104703 0701 PRESSURE GAUGE 65104234 0705 MAIN 65105068 0706 PRINTED CIRCUIT BOARD DISPLAY 65104448 63 BENCHMARK gt benchmar COLLECTIVE MARK BOILER SERIAL No NOTIFICATION No CONTROLS comply with the Building Regulation each section must have a tick in one or other of the boxes J GAS BOILER COMMISSIONING CHECKLIST TIME amp TEMPERATURE CONTROL TO HEATING ROOM T STAT amp PROGRAMMER TIMER PROGRAMMABLE ROOMSTAT TIME amp TEMPERATURE CONTROL HOT WATER CYLINDER T STAT amp PROGRAMMER TIMER COMBI BOILER HEATING ZONE VALVES FITTED NOT REQUIRED HOT WATER ZONE VALVES FITTED NOT REQUIRED THERMOSTATIC RADIATOR VALVES FITTED AUTOMATIC BYPASS TO SYSTEM FITTED NOT REQUIRED FOR ALL BOILERS CONFIRM THE FOLLOWING THE SYSTEM HAS BEEN FLUSHED IN ACCORDANCE WITH THE BOILER MANUFACTURER S INSTRUCTIONS THE SYSTEM CLEANER USED THE INHIBITOR USED FOR THE CENTRAL HEATING MODE MEASURE amp RECORD GAS RATE m3 hr BURNER OPERATING PRESSURE IF APPLICABLE N A mbar CENTRAL HEATING FLO
39. 2 sub menu 3 parameter 1 09 ee di automatic automatic Menu 2 sub menu 3 parameter 5 Main Burner jets nr 13 13 Main Burner jets 1 25 0 75 0 75 1 32 0 8 0 8 Max min maximum D H W 2 86 213 210 3 31 247 243 consumption 15 C 1013 mbar maximum heating absolute 2 73 203 2 00 3 17 2 37 2 33 G N m h GPL i Kg h minimum 1 16 0 87 0 85 1 38 1 03 1 01 d th i 7 Start up the boiler boiler be converted to use either methane natural gas 8 perform the gas adjustment see the paragraph Checking the G20 or L P G G30 G31 by an Authorised Service Centre The operations that must be performed are the following switch off the the electrical supply to the appliance turn off the gas cock disconnect the electrical connections to the boiler gain access to the combustion chamber as indicated in the paragraph Maintenance Guide General Access 5 replace the jets and attach the labels as directed in the instruc 9 tion sheet for the Kit 6 check that all connections are gas tight gas setting maximum hot water minimum maximum absolute heating power maximum Heating Power adjustment oft light feature ignition delay feature for the heating system carry out combustion analysis 31 commissioning Auto function This is a function which enables the boiler to automatically adapt its operation routine
40. If external controls have been disconnected reconnect and test 10 boiler casing 11 Complete the Benchmark Commisssioning Checklist on page 46 and any other necessary documentation maintenance Instructing The End User 1 Hand over the copy of the End User Instructions supplied with the appliance together with these instructions and explain how to use the timeclock and room thermostat if fitted 2 Showthe End User how to switch the appliance off quickly and indicate the position of the electric supply isolator 3 Inform the End User ofthe location of all drains isolating valves and air vents 4 Explain how to turn the appliance off for both short and long periods and advise on the precautions necessary to prevent damage in the event that the appliance is inoperative when freezing conditions occur 5 Finally advise the End User that for continued safe and efficient operation the appliance must be serviced by a competent person at least once a year It is recommended that the following inspections be carried out on the boiler at least once a year 1 Check the seals for the water connections replace faulty seals 2 Check the gas seals replace any faulty gas seals 3 Visual check of the entire unit 4 Visual check of the combustion process or analysis of combustion by products see Section 3 4 and cleaning of the burner if needed 5 If necessary dismantling and cleaning of the combustio
41. OSTAT TERMINAL BLOCK Terminals shown are for the MTS Unvented Hot Water Cylinder Thermostats 23 CYLINDER ion tallati WiRING DIAGRAM For To MTS UNVENTED 185 BOILER CONNECTIONS PROGRAMMER DI L ege St NOT NOT THERMOSTAT USED USED 240 V uwa TERMINAL BLOCK E Njt 3ja s ej 7 a 9 I ijs E en on BR BL 6 MOTORISED H W MOTORISED HIGH LIMIT CYLINDER VALVE VALVE STAT THERMOSTAT Terminals shown are for the MTS Unvented Hot Water Cylinder Thermostats 24 ion tallat Ins For increased safety ask a qualified technician to perform a Fig 32 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 Electrical diagram 101507901 90019 jeaulaAQ uinjag H z N H 9 mun N9 00129190 90014 ainjesadway HldV3 c JINW14 m 10 e49uat yieds 101990105 eng dund 1081102 31038 25 jeuondg 10 9 jeusayXZ FC jguondg z 1e1souuauj ZV jeuondg LV ion tallati Ins Fig 33 IIMS 81nSS 1d 10150739 1
42. TARI VG 12 Main water feed Central Heating 12 Domestic Waters uu naqa daala 12 Fue CORAM 13 Fring the coaxial UE u LLULLU SL u 14 15 Fitting the flue Twin pipe aodio ndn VIVA vef ed RP 17 sets Magn 21 Peripheral unit connection 21 Room Thermostat connection 22 Outdoor sensor confiG6 HOT usos miscet ae ODD I 22 Wiring Diagram for connection to an open Vented Cylinder 23 Wiring Diagram for connection to an MTS Vented Cylinder 24 Electrical 25 Water circuit Cl ACM alb os u ua saqi UTE ONG RUOTE HAE 27 arene ean tO 28 Initial dE 28 u wasa 28 Checking the gas lt assa h 29 Supply working pressure check 29 Checking the maximum
43. W TEMPERATURE C CENTRAL HEATING RETURN TEMPERATURE C FOR COMBINATION BOILERS ONLY HAS A WATER SCALE REDUCER BEEN FITTED YES NO WHAT TYPE OF SCALE REDUCER HAS BEEN FITTED FOR THE DOMESTIC HOT WATER MODE MEASURE amp RECORD GAS RATE m3 hr ft hr MAXIMUM BURNER OPERATING PRESSURE IF APPLICABLE N A mbar COLD WATER INLET TEMPERATURE C HOT WATER OUTLET TEMPERATURE C WATER FLOW RATE Its min FOR CONDENSING BOILERS ONLY CONFIRM THE FOLLOWING THE CONDENSATE DRAIN HAS BEEN INSTALLED INACCORDANCE WITH THE MANUFACTURER S INSTRUCTIONS YES FOR ALL INSTALLATIONS CONFIRM THE FOLLOWING THE HEATING AND HOT WATER SYSTEM COMPLIES WITH CURRENT BUILDING REGULATIONS THE APPLIANCE AND ASSOCIATED EQUIPMENT HAS BEEN INSTALLED AND COMMISSIONED IN ACCORDANCE WITH THE MANUFACTURER S INSTRUCTIONS IF REQUIRED BY THE MANUFACTURER HAVE YOU RECORDED 2 RATIO READING YES RATIO THE OPERATION OF THE APPLIANCE AND SYSTEM CONTROLS HAVE BEEN DEMONSTRATED TO THE CUSTOMER THE MANUFACTURER S LITERATURE HAS BEEN LEFT WITH THE CUSTOMER COMMISSIONING ENG S NAME PRINT CORGI ID No SIGN DATE SERVICE INTERVAL RECORD It is recommended that your heating system is serviced regularly and that you complete the appropriate Service Interval Record Below Service Provider Before completing the appropriate Service Interval Record below please ensure you have carried out the service as described in the
44. age caused by the failure to earth the appliance m EN properly or by anomalies in the supply of power Make sure that the residential electrical system is adequate for the maximum power absorbed by the unit which is indicated on the rating plate In addition check that the section of cabling is appropriate for the power absorbed by the boiler The boiler operates with alternating current as indicated in the Technical Information tables on pages 6 and 7 where the maximum absorbed power is also indicated Make sure that the connections for the neutral and live wires correspond to the indications in the diagram The appliance electrical connections are situated on the reverse of the control panel 1 Important m s m In the event that the power supply cord must be changed replace y y f f f it with one with the same specifications 5 Note The diagrams for the electrical system external wiring 400 configurations can
45. alculates the most suitable delivery we temperature taking into account the outside temperature and type of system The type of curve should be selected correspondence with the projected temperature of the system the nature of the dispersions present the E is structure ES um For high temperature systems one of gt the curves depicted in the chart may be e chosen 40 1 0 1 5 Standard System 2 0 3 5 Convector Radiators 30 Note The Outdoor Sensor should only be 10 5 used when the boiler is used for central heating only 0 5 10 15 20 C External temperature 38 settings adjustment problem identification parameter Description Parallel curve shift Zone 1 Offset from 20 to 20 Of To adapt the heating curve to the system requirements shift the curve in parallel so that the calculated flow temperature is modified in addition to the room temperature By accessing this parameter and turning knob 5 Figs 1 and 2 page 4 the curve can be shifted in a parallel manner The value is indicated on the display from 20 to 20 Room sensor Influence to calculate the set point temperature Thermoregulation enabled from 0 to 20 20 If set to 0 the room temperature doesn t influence the calculation of the set point If set to 20 the room temperature has the maximun influence to calculate the set point only active when the BUS dev
46. and in conformity with any requirements established by local authorities and public health organisations After the boiler has been installed the installer must ensure that the end user receives the declaration of conformity and the operating manual and should provide all necessary information as to how the boiler and the safety devices should be handled This appliance is designed to produce hot water for domestic use It should be connected to a heating system and a distribution network for domestic hot water both of which must be compatible with its performance and power levels The use of the appliance for purposes other than those specified is strictly forbidden The manufacturer cannot be held responsible for any damage caused by improper incorrect and unreasonable use of the appliance or by the failure to comply with the instructions given in this manual Installation maintenance and all other interventions must be carried out in full conformity with the governing legal regulations and the instructions provided by the manufacturer Incorrect installation can harm persons animals and possessions the manufacturing company shall not be held responsible for any damage caused as a result In the event of any maintenance or other structural work in the immediate vicinity of the ducts or flue gas exhaust devices and their accessories switch the appliance off by switching the external bipolar switch to the OFF position and shutting
47. and press BOILER GENERAL SETTINGS Soft ignition from 0 to 90 see Gas Settings pages 29 and 30 Zone Frost Temperature Room Temperature only active when the 5 device is connected 2 2 2 PRESENT 0 Disabled Active only with 2 20 p c b optional 1 10seconds 2 90 seconds 3 210 seconds from 0 to 5 ONLY FOR SERVICE To be used only in 0 combi CLAS substitution P C B 1 Storage with NTC 2 Storage with Thermostat CLAS SYSTEM 3 4 5 00 USE from 0 to 99 ONLY FOR SERVICE To be used only in substitution P C B see Gas Settings pages 29 and 30 Maximum Central Heating power from 0 to 99 see Gas Settings pages 29 and 30 Adjustable heating NOT PRESENT 3 NOT PRESENT NOT PRESENT 5 Anti cycling time mode 0 Manual 1 automatic 6 Anti cycling time from 0 to 7 minutes If 235 0 7 Central Heating pump overrun from 0 to 15 minutes o CO continuos Pump speed control 0 Low speed 1 High speed 2 Modulating Set Delta T Pump from 10 to 30 C 20 Parameter to set if Pump Speed control 238 is set to modulating AT flow return for circulation pump modulation This parameter can be used to set the difference between the flow and return temperatures which determines the commutation between low and high circulation pump speed E g param 20 if the Tflow Tret gt 20 C the circulation p
48. ating button 6 to select the desired operating mode winter or summer winter mode every heating is shown on the display by the heating temperature Summer mode is set by putting the button 6 in O position hea ting off Adjusting the heating It is possible to set the temperature of the heating water by adjusting the knob 6 By placing the indicator somewhere between min and max a temperature may be obtained which varies from about 20 C to about 45 C low temperature and about 35 C to about 82 C high temperature Domestic hot water temperature adjustement COMBI It is possible to set the temperature of the domestic hot water by adjusting the knob 11 a temperature may be obtained which va ries from about 36 C to about 60 C The value set previously will flash on the display COMFORT function COMBI To activate the comfort mode it is necessary to press the comfort button 17 this will be indicatd by a yellow light 4 The comfort mode has priority over any other heating request There are two settings for the comfort mode they can be adjusted in the parameters menu 1 As soon as DHW is drawn the secondary heat exchanger is kept warm for 30 mins 2 As soon as DHW is drawn the secondary heat exchanger is kept warm permanently This function may be enabled by pressing the COMFORT button Switching off the heating To switch off the heating mode turn the button 6 in
49. azardous materials have been used in the fabrication of this product Before connecting the appliance check that the information shown on the data plate and the table in section 7 comply with the electric water and gas mains of the property You will find the data plate on the reverse of the control panel The gas with which this appliance operates is also shown on the label at the bottom of the boiler Do not install this appliance in a damp environment or close to equipment which spray water or other liquids Do not place objects on the appliance Do not allow children or inexperienced persons to use the appliance without supervision If you smell gas in the room do not turn on or off light switches use the telephone or any other object which might cause sparks Open doors and windows immediately to ventilate the room Shut the gas mains tap at or adjacent to the gas meter or the valve of the gas cylinder and call your Gas Supplier immediately Always disconnect the appliance either by unplugging it from the mains or turning off the mains switch before cleaning the appliance or carrying out maintenance In the case of faults or failure switch off the appliance and turn off the gas tap Do not tamper with the appliance For repairs call your local Authorised Servicing Agent and request the use of original spare parts For in guarantee repairs contact MTS GB Limited general information CLAS 24 FF CLAS 30 FF
50. ble Electrocution from live uninsulated wires Do notleave anything on top of the appliance A Personal injury caused by an object falling off the appliance as a result of vibrations Damage to the appliance or items underneath it caused by the object falling off as a result of vibrations Do not climb onto the appliance AL Personal injury caused by the appliance falling Damage to the appliance or any objects underneath it caused by the appliance falling away from its installation space Do not climb onto chairs stools ladders or unstable supports to clean the appliance Personal injury caused by falling from a height or cuts step ladders shutting accidentally Do not attempt to clean the appliance without first switching it off and turning the external switch to the OFF position Electrocution from live components Do not use insecticides solvents or aggressive detergents to clean the appliance Damage to plastic and painted parts Do not use the appliance for any use other than normal dome stic use Damage to the appliance caused by operation overload Damage caused to objects treated inappropriately Do not allow children or inexperienced individuals to operate the appliance Damage to the appliance caused by improper use If you detect a smell of burning or smoke coming from the appliance discon nect it from the electricity supply turn off the main gas valve open all windows and call for assistance Personal injury caused by
51. bsequent reignition of the burner after it has switched off on reaching the desired temperature By selecting manual itis possible to set the delay in minutes using the successive parameter menu 2 sub menu 3 parameter 6 to a time between 0 and 7 minutes Automatic selection means that the boiler will establish the delay time based on the set point temperature Checking maximum absolute heating power ONLY IN CASE OF GAS CHANGE OR P C B REPLACEMENT To check modify the maximum absolute heating power access the gas valve and proceed as follows 1 Loosen screw 2 Fig b and insert the pressure gauge connection pipe into the pipe tap 2 Disconnect the air chamber compensation tube 3 Switch the boiler on at maximum heating power enabling the chimney sweep function press the eset key for 5 seconds the display shows t The supply pressure should correspond to the value shown in the Gas Settings table according to the type of gas for which the boiler is designed If it does not correspond access menu 2 sub menu 3 parameter 0 and press the and buttons to modify the value until the pressure indicated in the Gas Table has been reached 4 When the check is complete tighten screw 2 and make sure it is securely in place 5 The chimney sweep function is deactivated either automatically after 10 minutes or when the Esc button is pressed commissioning Heating Power Adjustment Gas H
52. cally as soon as the problem which caused the shut off is removed on the display and flash Err and the error code es 0 1 In fact as soon as the cause of the shut off disappears the boiler starts up again and continues to operate normally Safety shut off due to insufficient water pressure If the water pressure inside the heating circuit is insufficient the boiler will perform a safety Ecc shut off The display will flash Err and the code for Insufficient circulation 103 104 105 401 106 or 107 BRR 107 Check the water pressure on the pressure gauge and make sure that is between 0 6 and1 5 bar when the system is cold If the pressure is just under the minimum refill the system by connecting the silver flexible hose supplied to the two isolating points underneath the boiler once the hose is connected open up both of the grey quarter turn handles once the pressure reads 1 5 bar on the display close both handles and disconnect the hose If the pressure drops very frequently there may be a water leak at some point in the system If this is the case please contact your installer and ask them to check it In this case or if the re balancing request is performed on a frequent basis switch the boiler off bring the external electric switch to the OFF position shut off the gas valve and contact a qualified technician to check for any leaks of water Shutdown This type of error is non volatile whic
53. check 1 Loosen screw 1 Fig a and attach the pressure gauge connection pipe onto the test nipple 2 Switch the boiler on at maximum power enabling the flue sweep function press the eset button for 5 seconds the display will show t The working pressure should correspond to the value established in relation to the type of gas for which the boiler is designed 3 When the check is over tighten screw 1 and make sure it is securely in place 4 The flue sweep function is automatically deactivated after 10 minutes or when the eset button is pressed Checking the D H W maximum power 1 To check the maximum power level loosen screw 2 Fig b and connect the pressure gauge connection pipe onto the test nipple 2 Disconnect the air chamber compensation tube 3 Run the hot water at maximum power enabling the flue sweep function press the eset button for 5 seconds the display shows t press the programming key to activate operation at the maximum hot water power level The display will show t The supply pressure should correspond to the value shown in the Gas Settings table in relation to the type of gas for which the boiler is designed If it does not correspond remove the protective cover on the gas valve and tighten or loosen the adjustment screw 3 fig c to adjust 4 When the check is over tighten screw 2 and make sure it is securely in place 5 Replace
54. cluding the gas meter test for tightness and purge the supply as described in BS 6891 1988 Open the gas cock supplied with the connection kit to the appliance and check the gas connections on the appliance for leaks Flushing Procedure When the installation and filling are completed flush the system while cold refill turn on the Central Heating system and run it until the temperature has reached the boiler operating temperature The system must then be immediately flushed through The flushing procedure must be in line with BS 7593 1992 code of practice for treatment of water in domestic hot water central heating systems During this operation we highly recommend the use of a central heating flushing detergent Fernox Superfloc or equivalent whose function is to dissolve any foreign matter that may be in the system Substances different from these could create serious problems to the pump or other components The use of an inhibitor in the system such as Fernox MB 1 or equivalent is strongly recommended to prevent corrosion sludge 28 damaging the boiler and system Failure to carry out this procedure may invalidate the appliance warranty Initial Start up The checks to be run before initial start up are as follows 1 Make sure that the cap on the automatic air valve has been loosened when the system is full Ifthe water pressure in the system is below 1 5 bar bring it up to the appropriate level Make sur
55. crease the comfort level of the user when drawing hot water This function keeps the secondary exchanger hot during periods of boiler inactivity this increases the initial heat status of the water drawn as the water is delivered at a higher temperature Press the MENU OK button to enable the Comfort Anti cycling Time COMBI from 0 to 120 minutes 0 DHW Start Delay COMBI D H W switch logic COMBI domestic hot water is drawn Delay start in Central Heating after D H W request RESET MENU 2 RESET MENU 2 Reset factory settings Reset OK Yes Esc No EN 3 BOILERWITH STORAGE INSIDE OR OUTSIDE AND BOILER WITH SOLAR KIT GENERAL SETTINGS Post circulation and post ventilation after OFF From 5 to 200 from 0 5 o 20 seconds 0 Anti scale stop at gt 67 C 1 At4 C over set point 1 ON from 0 to 30 minutes 5 0 ONLY FOR SERVICE To be used only in substitution P C B Storage Setpoint Temperature NOT ACTIVE 0 1 NOT ACTIVE For boiler with solar Kit connected o 2 noram w E SEIS Press to select code 234 and press 37 settings adjustment problem identification gt Description Anti legionella Function NOT ACTIVE Only for boiler with storage inside Solar Configuration Type 0 Nothing or single coil Natural circulation 1 Single coil
56. culation indication 1 P3 2 01 D H W temp probe circuit open short circuit 2 02 Circuito aperto o cortocircuito sonda accumulo bassa O UJ collettore solare 2 07 2 08 Internal 5 Kit solare optional rr _______ External P C B s 407 Room sensor circuit open short circuit Ignition and Detection 6 1 6 P2 70 702 703 704 705 706 707 33 protection devices Anti frost Device The anti frost function acts on the central heating flow temperatu re probe independently from other regulations when the electri cal supply is turned on If the primary circuit temperature falls below 8 C the pump will run for 2 minutes After the two minutes of circulation fixed the boiler will check the following a if the central heating flow temperature is gt 8 C the pump stops b if the primary flow temperature is between 4 and 8 C the pump will run for another two minutes c if the primary flow temperature is lt 4 C the burner will fire hea ting position at minimum power until the temperature reaches 33 C the burner will go out and the pump will continue to run for two minutes If the flow temperature remains between 4 8 C the pump will con tinue to run for two minutes for a maximum of 10 times unless a temperature above 8 C is detected in the primary flow after this the the burner will fire If lockout is cause
57. d by overheat the burner is kept OFF Note In all cases the circulation takes place in the central heating system The anti frost device activates only when with the boiler opera ting correctly the system pressure is correct the boiler is electrically powered there is a supply of gas Combustion Analysis The flue connector has two apertures readings can be taken for the temperature of the combustion by products and of the combustion air as well as of the concentrations of O2 and CO2 etc To access these intakes it is necessary to unscrew the front screw and remove the metal plate with sealing gasket It is possible to activate the flue test mode by pressing and holding the eset button for 10 seconds The boiler will return to normal operation after 10 minutes The boiler can be returned to normal operation sooner by switching the boiler off and on again When you have finished reposition the metal plate correctly and make sure the seal fits perfectly 4 34 Flue test mode The P C B enables the boiler to be forced to its maximum minimum power By activating the Flue test mode pressing the eset button for 10 seconds the boiler will be forced to its maximum heating power and the display shows To select operation at maximum power press the button and the following will appear on the display m To select operation at minimum power press the button and the follo
58. e that the electrical connection has been made properly and that the earth wire is connected to an efficient earthing system Switch on the boiler by pressing the ON OFF button and select the standby mode where no hot water or heating requests are made Start the deaeration cycle by pressing Esc for 5 seconds The boiler will start a deaeration cycle lasting about 7 minutes If you need to stop it press Esc Loosen the cap on the head of the pump to eliminate any air pockets Repeat the procedure for bleeding the radiators of air Open the hot water taps for a brief period Check the system pressure and if it has dropped open the filling loop again to bring the pressure back up to 1 5 bar 2 Make sure that all radiator valves are open 3 Check the minimum and maximum burner pressure values adjust if necessary using the values indicated in the table on Page 29 Description of Function De aeration cycle During the filling stage or if there is excess air in the system the deaeration cycle can be activated by holding the Esc button for 5 seconds The boiler will start a cycle which lasts approximately 7 minutes When this is complete the menu screen will be restored The cycle may either be repeated if necessary or stopped by pressing Esc Press the Esc button until the normal display screen is restored Checking the gas settings Remove the front casing and proceed as described below Supply working pressure
59. eatingPower kW 9 8 12 5 14 5 16 5 20 0 22 0 24 0 G20 J 23 38 51 67 76 92 110 Parameter231 0o 40 45 50 53 57 62 G30 mbr 45 75 101 13 0 18 2 22 0 262 Parameter231 54 60 66 75 81 8 G31 mbr 63 105 141 182 23 3 28 1 33 5 Parameter231 0 67 68 75 82 89 96 Gas Heating Power kw 121 14 16 18 20 24 26 28 G20 mbr 23 34 44 55 68 89 104 121 ot Parameter231 0 51 57 62 69 76 81 84 G31 mbar 62 90 118 149 184 244 286 332 0 54 61 67 73 83 89 95 Parameter 2 3 1 FF CLAS 24 FF CLAS 30 FF CLAS SYSTEM 28 FFF CLAS SYSTEM 21 CLAS 24 FF CLAS 30 FF CLAS 21 FF SYSTEM CLAS 28 FF SYSTEM Gas Table propane propane lower Wobbe index 15 C 1013 mbar MJ m3 45 67 80 58 70 69 45 67 80 58 70 69 Gas Inlet Pressure 20 28 30 27 20 28 30 37 maximum D H W 12 2 27 7 35 5 12 9 27 7 35 8 Gas Burner maximum heating absolute 11 26 2 33 5 12 2 26 0 33 5 Pressure mbar Menu 2 submenu 3 parameter 0 62 87 96 64 85 95 minimum 2 3 4 5 6 3 2 3 5 1 6 0 Soft light mbar 5 0 112 11 2 5 49 9 51 9 51 Menu 2 sub menu 2 parameter 0 51 63 63 47 58 58 Maximum heating power adjustment Menu
60. elbows as required secure the adap tor using the clamp and screws provided To fit extensions or elbows it is first necessary to ensure that the lip seal is fitted correctly into the inner flue once verified it is sim ply necessary to push them together no clamps are necessary to secure the flue components Before proceeding to fit the flue ensure that the maximum flue length has not been exceeded See the tables on Page 20 and that all elbows and bends have been taken into consideration for each additional 90 elbow 1 metre must be subtracted from the total flue length and for each 45 0 5 metres must be subtracted from the total flue length the height of the vertical adaptor and a 45 bend can be seen in Fig 17 and a 90 bend in Fig 16 Note DO NOT cut the vertical flue kit Useable length of vertical kit 575 mm 80 125 Adaptor Part No 3318040 15 installation Vertical Terminal Flashing Note Max Length b b 0 5 0 5 Combined Length not to exceed 4m Max usable length with angled Max usable length 1340mm flashing at maximum pitch 660mm Min usable length 1100mm Min usable length with angeld flashing at maximum pitch 400mm
61. electrical system checks to ensure electrical safety must be carried out by a competent person i e polarity earth continuity resistance to earth and short circuit Filling the Heating System Lower the control panel and remove the case panels Open the central heating flow and return cocks supplied with the connection kit there are two isolation points on the return connection Unscrew the cap on the automatic air release valve one full turn and leave open permanently Close all air release valves on the central heating system Gradually open valve s at the filling point filling loop connection to the central heating system until water is heard to flow do not open fully Open each air release tap starting with the lowest point and close them only when clear water free of air is visible Purge the air from the pump by unscrewing the pump plug anticlockwise also manually rotate the pump shaft in the direction indicated by the pump label to ensure the pump is free Refit the pump plug Continue filling the system until at least 1 5 bar registers on the pressure gauge Inspect the system for water soundness and remedy any leaks discovered Filling of the D H W System COMBI only Close all hot water draw off taps Open the cold water inlet cock supplied with the connection kit Open slowly each draw off tap and close them only when clear water free of bubbles is visible Gas Supply Inspect the entire installation in
62. f Where the flue runs through cold spots i e loft areas condense is likely to be formed therefore a fall back to the boiler and a trap is required Always ensure that the flue is adequately supported avoiding low points MTS supply suitable clamps as Part No 705778 To utilise the air intake it is necessary to Remove the blank intake by cutting it with a suitable knife Fig 23 page 20 Insert the elbow flue pipe into the air intake until it stops The twin flue pipes can be fitted with or without additional elbows and need no clamps simply ensure that the red o ring is inserted in the female end of the flue pipe and push the extension piece fully into the previous section of flue pipe or elbow check that the o ring is not dislodged when assembling the flue 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 3318030 When running the twin flue pipe vertically a condense trap must always be used on the exhaust pipe It is not possible to use the pipe bridge for horizontal termination 17 installation IMPORTANT Where condense will form within the flue system ensure there is a fall back to the boiler of 30and a suitable trap is fitted as close to the boiler as possible MTS supply a suitable collector Part No 3318026 Note Vertical twin flue installations must have a trap
63. fety 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 Make sure that the system is able to withstand the maximum power absorbed by the boiler this is indicated on the appliance data plate Check that the section of the wires is suitable and is not less 1 5 mm The appliance must be connected to an effiecient earthing system if it is to operate correctly The power supply cable must be connected to a 230V 50Hz network where the L N poles and the earth connection are all respected Important In the event that the power supply cable must be changed replace it with one with the same specifications Power supply cable Fig 28 120 lt 140 Y Important Connection to the electricity mains supply must be performed using a fixed connection not with a mobile plug and a bipolar switch with a minimum contact opening of 3 mm must be fitted H03V2V2 F _ e The use of multiplugs extension leads or adaptors is strictly prohibited It is strictly forbidden to use the piping from the hydraulic heating and gas systems for the appliance earthing connection The boiler is not protected against the effects caused by lightning If the mains fuses need to be replaced use 2A rapid fuses WARNING A For the connection a
64. gas valve Loosen the automatic air relief valve Openthe system discharge valve and collect the escaping water in a container Empty the water from the lowest points of the system where applicable If the system is to be left inactive in areas where the room temperature may fall below 0 during winter we recommend that anti freeze liquid is added to the water in the heating system in order to avoid the need for repeated draining when this liquid is used make sure it is compatible with the stainless steel used for the bodywork of the boiler We recommend the use of anti freeze products which contain PROPYLENE GLYCOLS as these inhibit corrosion and that they are used in conjunction with the anti scaling and anti corrosion function in the quantities suggested by the manufacturer at the mimimum temperature Regularly check the pH level of the water anti freeze mix in the boiler circuit and replace it when the value measured is lower than the limit prescribed by the manufacturer DO NOT MIX DIFFERENT TYPES OF ANTI FREEZE The manufacturer will not be held liable for any damage caused by the appliance or the system due to the use of inappropriate anti freeze substances or additives Draining the domestic hot water system and indirect cylinder Every time there is a danger of freezing the domestic hot water system must be drained as follows Shut off the water mains inlet valve Open all the hot and cold wate
65. h means that it is not removed automatically On the display flash Err and the error code es ERR 501 restore normal operation press the Beset button on the control panel The first figure of the error code e g 1 01 indicates within which operational assembly the error occurred 1 Primary Circuit 2 Domestic Hot Water Circuit 3 Internal Electronic Part 4 External Electronic Part 5 gnition and Detection 6 Air inlet flue gas outlet 7 Multizone Malfunction warning This warning is shown by the display in the following format 5 Flame cut off the first figure indicating the operational assembly is followed by a P warning and the code relating to the specific warning Important If this shutdown occurs frequently contact an authorised Technical Service Centre for assistance For safety reasons the boiler will 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 boiler protection devices Table summarising error codes 1 04 Insufficient circulation 110 C H Flow temp probe circuit open short circuit 112 C H Return temp probe circuit open short circuit 114 External sensor circuit open short circuit 1P1 Insufficient cir
66. have access then a suitable terminal guard must be fitted When ordering a terminal guard quote the appliance model number The minimum acceptable spacing from the terminal to obstructions and ventilation openings are specified in Fig 11 TERMINAL POSITION mm A Directly above or below an openable window or other opening 300 B Below gutters solid pipes or drain pipes 75 C Below eaves 200 D Below balconies or car port roof 200 E From vertical drain pipes and soil pipes 150 F From internal or external corners 300 G Above ground or balcony level 300 H From a surface facing a terminal 600 Fromaterminal facing a terminal 1200 J From an opening in the car port e g door window into dwelling 1200 K Vertically from a terminal in the same wall 1500 L Horizontally from a terminal in the same wall 300 M Horizontally from an opening window 300 N Fixed by vertical flue terminal NOTE THE FLUE MUST NOT TERMINATE IN A PLACE LIKELY TO CAUSE NUISANCE installation Lmax 4m Maximum Length 4 m Minimum Length 370 mm la X 4 107 Flue Clamp af Screw
67. he central heating flow temperature probe independently from other settings when the electrical supply is turned on If the primary circuit temperature falls below 8 C the pump will run for 2 minutes After the two minutes of circulation fixed the boiler will check the fol lowing a if the central heating flow temperature is gt 8 C the pump stops b if the central heating flow temperature is between 4 and 8 C the pump will run for another two minutes C if the central heating flow temperature is lt 4 C the burner will fire heating position at minimum power until the temperature reaches 33 C the burner will go off and the pump will continue to run for two minutes The anti frost device activates only when with the boiler operating cor rectly the system pressure is correct the boiler is electrically powered there is a supply of gas user Manual Auto button Temperature adjustment activation The AUTO function enables boiler operation to be adapted to environmental conditions and to the type of system it is installed on Comfortable temperature is reached inside the room in the quickest way possible without wasting money energy or efficiency while substantially reducing the amount of wear experienced by the components Your installer will advise you on the devices connectable to the boiler and will program it according to the system Innormal boilers the water temperature inside the
68. ice is connected Maximum Central Heating Temperature Zone from 40 to 82 C Minimum Central Heating Temperature Zone 1 from 40 to 82 C Room Temperature Zone 1 only active when the BUS device is connected Flow Temperature Zone 1 only active when the BUS device is connected Zone 1 Heat Request ZONE 1 DEVICES 0 OFF 1 0 Zone 1 Pump status 0 OFF 1 ON Active only with MGZ MCM Kit Active only with MGZ MCM Kit Set Day Temperature Zona 2 from 16 to 30 only active when the BUS device is Set Night Temperature Zona 2 from 16 to 30 C connected Fix temperature central heating from 35 1085 C To set only with Fixed Flow Temperaure of Thermoregulation see 521 222 Press to select code 234 and press When an outdoor sensor is used the boiler calculates the most suitable delivery temperature taking into account the outside temperature and type of system The type of curve should be selected in correspondence with the projected temperature of the system and the nature of the dispersions present in the Zone 1 Slope may be chosen 1 0 1 5 Standard System 2 0 3 5 Convector Radiators structure For high temperature systems one of the curves depicted in the chart Note The Outdoor Sensor should only be used when the boiler is used for central heating only Zone 2 Tempera
69. icular attention is drawn to the requirements of the current I E E Wiring Regulations and in Scotland the electrical provisions of the Building Regulations applicable in Scotland with respect to the installation of the combined appliance in a room containing a bath or shower the location of the boiler in a room containing a bath or shower should only be considered if there is no alternative Where a room sealed appliance is installed in a room containing a bath or shower the appliance and any electrical switch or appliance control utilising mains electricity should be situated so that it cannot be touched by a person using the bath or shower specifically in accordance with current IEE Wiring Regulations The location must permit adequate space for servicing and air circulation around the appliance as indicated on paoe 9 The location must permit the provision of an adequate flue and termination For unusual locations special procedures may be necessary BS 6798 1987 gives detailed guidance on this aspect A compartment used to enclose the appliance must be designed specifically for this purpose No specific ventilation requirements are needed for the installation within a cupboard This appliance is not suitable for outdoor installation The type C appliances in which the combustion circuit air vent intake and combustion chamber are air tight with respect to the room in which the appliance is installed can be installed in any type
70. imum Heating Power adjustment submenu 2 parameter 0 Soft light Ignition submenu 3 parameter 5 and 6 Heating ignition delay sottomenu 3 parametro 0 Maximum Absolute Heating Power This parameter must be changed only to change gas or replace P C B PROGRAMMING BUTTON The information relating to the menus and the individual parameters are indicated on the display To access Menu 2 open the cover and proceed as follows 1 Press the Menu Ok button the first figure 0 0 will flash on the display 2 Press button to select menu 200 3 Press the Menu Ok button the second figur on the display will flash and the access code P FO will be requested Caution The menus reserved for qualifled technicians may only be accessed after setting the access code 4 Press the Menu Ox button 222 will appear on the display unit Press the button to select code 2 34 6 Press the Menu Ox button to select the sub menu the second figure will flash 7 Press the button to select the sub menu for example 280 8 Press the button to access the sub menu parameters the third figure 2 3 will flash 9 Turn the encoder to select the parameter the text on the display will indicate the title of the pre selected parameter 2 31 Adjustable Heating Power Level 10 Press the or button to access the parameter the display will indicate the value e g T5 No
71. isual inspection Clean as necessary Check flow rate Expansion vessel Maintenance Interval Annually How Check air pressure is at 1 bar System drained Ignition amp detection electrodes Maintenance Interval Annually How Visual inspection Clean as necessary Distance from the burner lonisation current more than 1 pA Burner Maintenance Interval Annually How Visual inspection Clean as necessary Fan Maintenance Interval Annually How Visual inspection Clean as necessary Primary Heat exchanqer Maintenance Interval Annually How Visual inspection Clean as necessary Pump Maintenance Interval At the first ignition and annually How Check that the AAV is open Visual inspection Clean as necessary short list m 606 706 lt lt lt lt e Z o E Key N Description i 0107 BURNER 65104220 0110 ELECTRODE IGNITION DETECTION 65104549 0113 MAIN EXCHANGER 65104246 0135 THERMOSTAT 65104500 0206 FAN 65104357 FAN 65104452 0216 AIR PRESSURE SWITCH 65104671 AIR PRESSURE SWITCH 65104672 0327 EXPANSION VESSEL 65104261 0537 PRESSURE RELIEF VALVE 61312668 0576 TEMPERATURE PROBE CLIP 990686 0589 SECONDARY EXCHANGER 65104333 0601 MOTOR THREE WAY VALVE 61302483 0603 3 WAY SPRING KIT D H W 65104314 0606 SENSOR REED 65104323 0619 PUMP 65104227 0630 3 WAY SPRING KIT D H W 65104317 063
72. le through the ceiling and or roof and fit the flashing plate to the roof Should it be necessary to cut the flue DO NOT cut the outer white air inlet tube cut the aluminium exhaust flue 6mm longer than the outer white air tube when used at minimum length DO NOT cut more that 250mm from the inner aluminium exhaust flue To connect the vertical flue kit directly to the boiler place the adaptor supplied with vertical flue kit onto the exhaust manifold and secure with the clamp 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 required they are available in 1 metre Part No 3318005 500mm Part No 3318006 they must be connected directly to the boiler and secured with the clamp supplied before connecting the adaptor to allow the vertical flue kit to be fitted In the event that extension pieces need to be shortened they must only be cut at the male end and it must be ensured that the distance between the inner and outer flue are kept Fig 2 8 page 11 WARNING If the chosen flue length requires the use of the restrictor it is already fitted inside the flue gas collar In the event of an in stallation which does not require the use of the restrictor the latter should be removed from the flue gas collar See table A Page 20 and Fig 22b Minimum offset distance when using 2x 45
73. n chamber 6 If necessary dismantling and cleaning of the burner jets 7 Visual check of the primary heat exchanger check for overheating in the blade assembly clean the exhaust fan if needed 8 Adjustment of the gas pressure gas rate and soft light partial load and full load 9 Check of the heating safety systems safety device for maximum temperature overheat thermostat safety device for maximum pressure safety valve 10 Check of the gas safety systems safety device for lack of gas or flame ionisation detection electrode 11 Check of the electrical connection ensure it complies with the instructions in the manual 12 Check of Domestic Hot Water production efficiency flow rate and temperature 13 General check of the combustion by products of the discharge ventilation system 14 Check of the general performance of the unit 43 maintenance guide General access Lower the electrical box 44 Remove the combustion chamber front panel by releasing the clips Remove the front panel maintenance guide Electrical Unit Control Box access Remove the front panel as above Unlock the four clamps to gain and pivot the electrical box access to the control box Fuse Open the control box as above Remove the fuse 45 maintenance guide Main PCB After opening the control box disconnect the electrical plug connectors Unscrew the two screws and remove the PCB
74. nd positioning of the wires belonging to optional peripheral units please refer to the advice relating to the installation of these units ede dla lle enerererere TA1 TA2 SE AMPC GAL1 I bus translator Optional P C B 7 optional installation Peripheral unit connection To access peripheral unit connections carry out the following steps Disconnect the boiler from the power supply Remove the casing by unhooking it from the instrument panel Rotate the control panel while pulling it forwards Unscrew the two screws on the back cover of the instrument panel Unhook the right side clip and the right front clip then lift the flap The terminal board see figure may be accessed in order to connect Outdoor sensor not suitable for use on CLAS HE SYSTEM Room thermostat 1 Room thermostat 2 Optional P C B s can also be entered for further accessories BUS P C B For the connection of the Clima Manager remote control Modulating room sensor Caution For the connection and
75. ng the flue from inside of the building attach the grey outer wall seal to the flue terminal and push through the flue through the hole once the wall seal has passed through the hole pull the flue back until the seal is flush with the wall Alternatively the flue can be installed from outside of the building the grey outer seal being fitted last WARNING If the chosen flue length requires the use of the restrictor it is already fitted inside the flue gas collar In the event of an in stallation which does not require the use of the restrictor the latter should be removed from the flue gas collar See table A Page 20 and Fig 15 HEIGHT 237 mm Useable length of vertical kit 1240 mm 241 mm HEIGHT This length will vary according to the type of flashing installed installation Fitting 80 125 Flue Horizontal and Vertical For Coaxial Vertical Flue Instructions see page 13 Should the flue require extending the flue connections are push fit however one flue bracket should be used to secure each metre of flue Note See page 20 for maximum and minimum flue runs Once the boiler has been positioned on the wall it is necessary to insert the 080 125 adaptor Fig 18 for both horizontal and verti cal flue runs into the boiler flue socket not supplied with flue kit Part No 3318040 Push the adaptor onto the boilers flue connection grease the seals then add extensions or
76. ominal heat input 60 80 94 8 84 5 93 6 84 3 2 Gross efficiency at 3096 47 5 93 6 84 3 93 2 83 9 Gross efficiency at minimum power Hi Hs 89 2 80 3 89 3 80 4 Number of efflciency stars Directive 92 42 EEC stars TOME ud Rating Sedbuk Band 96 D D Ma heat loss to the casing AT 50 C 96 0 4 0 3 Heat loss through the flue when burner on 96 5 0 6 1 Heat loss through the flue when burner off 96 0 4 0 4 Residual discharge head Pa 100 104 Nox class class 3 3 Flue fumes temperature G20 98 114 2 content G20 6 6 6 4 CO content 0 960 ppm 40 92 O2 content2 G20 8 7 8 9 Max Discharge of Products of Combustion G20 kg h 97 67 5 Excess air 62 8 74 Load losses water side max AT 20 C 200 200 Residual head for the system 0 25 0 25 5 Expansion vessel pre charged pressure 1 1 Maximum central heating circuit pressure 3 3 i Expansion vessel capacity 8 8 Central heating temperature max min Approx 85 35 85 35 Domestic hot water temperature 60 36 60 36 2 Specific flow rate of domestic hot water system 10 with AT 30 C instant boilers 125 14 1 amp D H W flow rate AT 25 C 15 0 16 9 D H W flow rater AT 35 C 10 7 12 1 Hot water comfort stars EN13203 3 3 D H W minimum flow rate 1 7 1 7 Domestic hot water pressure max 7 7 Power supply voltage frequency V Hz 230 50 230 50 Power consumption W 127
77. on close the gas tap and contact a qualified technician Safety shut off due to insufficient water pressure If the water pressure inside the heating circuit is insufficient the boiler will perform a safety shut off See table To re pressurise the boiler it will be necessary to connect the silver flexible hose supplied to the two isolating points underneath the boiler once the hose is connected open up both of the black quarter turn handles once the pressure reads 1 5 bar on the display close both handles and disconnect the hose If the pressure drops very frequently there may be a water leak at some point in the system If this is the case please contact your installer and ask them to check it Operation shutdown This type of error is non volatile which means that it is not removed automatically The display will flash ER R and the error code and the red led lights up 3 In this case the boiler does not restart automatically but it may be reset by pressing the eset button If the problem manifests itself again after several attempts to reset the appliance contact a qualified technician IMPORTANT IF THIS SHUTDOWN OCCURS FREQUENTLY CONTACT AN AUTHORISED SERVICE CENTRE FOR ASSISTANCE FOR SAFETY REASONS THE BOILER WILL ALLOW A MAXIMUM OF 5 RESET OPERATIONS TO TAKE PLACE IN 15 MINUTES INDIVIDUAL PRESSES OF THE eset BUTTON Insufficient circulation Anti frost Device The anti frost function acts on t
78. or or incorrect electricicty wrong gas supply or pressure tampering by inexperienced persons and any other cause not directly due to manufac ture MTS GB Limited cannot accept responsibility for any cost arising from repair or maintenance carried out by any third party Service under the guarantee does not affect the expiry date of the gua rantee The guarantee on parts and appliances which are exchanged ends when the guarantee on the original appliance expires This guarantee does not affect your statutory rights You must have your boiler serviced at the end of the first year to validate your guarantee for the second year Safety regulations Key to symbols A Failure to comply with this warning implies the risk of personal injury in some circumstances even fatal A Failure to comply with this warning implies the risk of damage in some circumstances even serious to property plants or animals Do not perform operations which involve opening the ap pliance Electrocution from live components Personal injury caused by burns due to overheated components or wounds caused by sharp edges or protrusions Do not perform operations which involve removing the ap pliance from its installation space AA Electrocution from live components Flooding caused by water leaking from disconnected piping Explosions fires or intoxication caused by gas leaking from discon nected piping Do not damage the power supply ca
79. or the air intake and 20 metres for the exhaust pipes also for each 90 elbow 1 3 metres must be subtracted from the total length and for each 45 elbow 1 metre must be subtracted from the total flue length Some of the acceptable flue configurations are detailed on page 19 Fig 26 For further information relating to flue runs not illustrated please contact the Technical Department on 0870 241 8180 18 installation Note Drawings are indicative of flueing options only AIR INTAKE MUST NOT BE FITTED ABOVE THE EXHAUST iil OOS UIN Fig 27 installation TABLE A MAXIMUM EXTENSION EXHAUST AIR CLAS 24 FF CLAS 30 FF Diameter CLAS SYSTEM 21 FF CLAS SYSTEM 28 FF of pipe mm Do not use Do not use Restrictor o 44 Restrictor 0 44 Restrictor Restrictor MIN MAX MIN MAX 60 100 gt 5 26 6 UJ 0 80 125 91 52 80 80 11 11 11 11 1 52 1 52 oe 80 80 1 0 5 1 34 1 34 1 53 Twin Pipe 20 WARNING A Before performing any work on the boiler first disconnect it from the electrical power supply using the external bipolar switch Electrical connections For increased sa
80. oth cases the boiler connection is shown as When connecting the boiler to an external cylinder do not run 240V cables and the cables for the room terminal together use separate cables to prevent induced voltage on the low voltage switching circuit THE USE OF A Y PLAN SYSTEM IS NOT POSSIBLE WITH THE CLAS HE SYSTEM BOILER DUE TO THE LOW VOLTAGE SWITCHING OF THE APPLIANCE UNLESS SUITABLE RELAY CONTROLS ARE USED Important Ensure that a balancing valve is fitted on the cylinder return and balanced correctly at commissioning stage r sensor connection 22 Introduce the outdoor sensor wires Loosen the cable clamp using a screwdriver and insert the wires leading from the outdoor sensor one at a time Connect the wires to the terminals as indicated in the figure below Make sure that they are well connected and that they are not subject to stress when the control panel lid is opened or closed Close the flap again then replace the control panel cover and the front casing Refer to page 39 for setting the parameters when using the outdoor sensor Outdoor Sensor Connector SE on PCB ion tallat Ins WIRING DIAGRAM For CONNECTION AN OPEN VENTED CYLINDER BOILER CONNECTIONS PROGRAMMER 1 II pomme 8N ew omen IW NOT NOT THERMOSTAT 240 V d USED USED 1 VT E JeRjon BR BL E en on BR BL C H MOTORISED H W MOTORISED HIGH LIMIT CYLINDER VALVE VALVE STAT THERM
81. p com uk E mail info uk mtsgroup com Technical Advice 0870 241 8180 Customer Service 0870 600 9888 MTS Heating Limited Damastown Industrial Park Damastown Avenue Mulhuddart Dublin 15 Telephone 01 810 3723 Fax 01 810 3727 Internet www mtsgroup com ie E mail info ie mtsgroup com Technical Advice 01 437 0121 Customer Service 01 437 0121 420010108401 09 2007
82. perature adjustment knob which with the Auto function activated is used to shift the curve in a parallel manner 32 Example 3 SINGLE ZONE SYSTEM HIGH TEMPERATURE WITH REMOCON remote CONTROL OUTDOOR SENSOR In this case the following parameters must be set 421 Activation of temperature adjustment using sensors select 04 outdoor sensor room sensor 422 Temperature adjustment curve selection see page 39 Select the relevant curve according to the type of system installation heat insulation used in the building etc 423 Performa parallel curve shift if necessary increasing or decreasing the set point temperature This may also be changed by the user by the encoder which with the Auto function activated is used to shift the curve in a parallel manner 424 Influence of room sensor used to adjust the influence the room temperature has on the calculation of the set point flow temperature 20 maximum 0 minimum Boiler protection devices The boiler is protected from malfunctioning by means of internal checks performed by the electronic microprocessor P C B which stops the boiler from operating if necessary In the event of the boiler being shut off in this manner a code appears on the display which refers to the type of shut off and the reason behind it There are two types of shut off Safety shut off This type of error is non volatile which means that the boiler starts up again automati
83. positioning of the wires belong ing to optional peripheral units please refer to the advice relating to the installation of these units A PRA ed Ney i yp TE M w mS re r7 fi fi T E 21 installation Room thermostat connection Introduce the thermostat wire Loosen the cable clamp using a screwdriver and insert the wires leading from the room thermostat one at a time Connect the wires to the terminals as indicated in the figure removing the jumper Make sure that they are well connected and that they are not subject to traction when the control panel lid is opened or closed Close the flap again then replace the control panel cover and the front casing Room Thermostat Connector TA on PCB low voltage switching WHEN CONNECTING THE BOILER EXTERNAL CONTROLS DO NOT RUN 240V CABLES AND CABLES FOR SWITCHING CIRCUITS WHICH ARE LOW VOLTAGE TOGETHER USE SEPERATE CABLES TO PREVENT INDUCED VOLTAGE ON THE LOW VOLTAGE CIRCUITS The boiler can be connected to a central heating system that uses two zone valves to allow connection to an indirect storage cylinder There are two wiring diagrams shown one for the connection to an Unvented Cylinder and one for connection to an open vented cylinder In b
84. r taps Empty the water from the lowest points of the system where applicable WARNING Before handling empty all components which may contain hot water performing bleeding where necessary Descale the components in accordance with the instructions provided on the safety data leaflet supplied with the product used make sure the room is well ventilated wear protective clothing avoid mixing different products and protect the appliance and surrounding objects Seal all openings used to take a gas pressure reading or to make any gas adjustments Make sure that the nozzle is compatible with the supplied gas If a smell of burning is detected or smoke is seen leaking from the appliance or there is a smell of gas disconnect it from the electricity supply shut off the gas valve open the windows and call for technical assistance Draining the System Draining the Heating System The heating system must be drained as follows Turn off the boiler Attach a hose pipe and open the drain valve Drain the system at the lowest points where present When the heating system is unused for an extended period of time it is recommended that you add antifreeze with an ethylene glycol base to the water in the heating pipe work and radiators if the ambient temperature drops below 0 C during the winter This makes repeated draining of the entire system unnecessary Draining the Domestic Hot Water System Whenever there is the danger
85. ral Heating Detailed recommendations are given in BS 6798 1987 and BS 5449 1 1990 the following notes are given for general guidance Pipe Work Copper tubing to BS EN 1057 1996 is recommended for water pipes Jointing should be either with capillary soldered or compression fittings Where possible pipes should have a gradient to ensure air is carried naturally to air release points and water flows naturally to drain taps The appliance has a built in automatic air release valve however it should be ensured as far as possible that the appliance heat exchanger is nota natural collecting point for air Except where providing useful heat pipes should be insulated to prevent heat loss and avoid freezing Particular attention should be paid to pipes passing through ventilated spaces in roofs and under floors By pass The appliance includes an automatic by pass valve which protects the main heat exchanger in case of reduced or interrupted water circulation through the heating system due to the closing of thermostatic valves or radiators System Design This boiler is suitable only for sealed systems Drain Cocks These must be located in accessible positions to permit the draining of the whole system and should be fitted at all low points The taps must be at least 15mm nominal size and manufactured in accordance with BS 2870 1980 installation Safety Valve Discharge The discharge should terminate facing down
86. s Foam Seal af 14 Fitting the Coaxial Flue Horizontal For Vertical Flue and Twin Pipe Instructions see pages 13 and 14 Contents 1x Silicone O Ring 60mm 1x Elbow 90 2x Wall Seals Internal amp External 1x Flue Pipe including Terminal 1 metre 60 100 2x Flue Clamps 4x Screws 2x Foam Seals Once the boiler has been positioned on the wall insert the elbow into the socket Fig 12 and rotate to the required position Note It is possible to rotate the elbow 360 on its vertical axis Using the flue clamps seals and screws supplied Figs 12 and 14 secure the elbow to the boiler The 1 metre horizontal flue kit 3318000 supplied is suitable for an exact X dimension of 811mm and the 750mm horizontal flue kit 3318001 is suitable for an exact X dimension of 699mm Measure the distance from the face of the external wall to the face of the flue elbow X Fig 12 add 23 mm to this measurement you now have the total length of flue required including the terminal this figure must now be subtracted from 860mm you now have the total amount to be cut from the plain end of the flue Cut the flue to the required length ensuring that the distance between the inner and the outer flue is maintained Fig 2 8 e g X 508mm 22mm 530mm 860 530 330mm Length to be cut from the plain end of the flue Once cut to the required length ensure that the flue is free from burrs and reassemble the flue If fitti
87. s water side max AT 20 C mbar 200 200 Residual head for the system 0 25 0 25 g Expansion vessel pre charged pressure 1 1 Maximum central heating circuit pressure bar 3 2 j Expansion vessel capacity 8 8 Central heating temperature max min C 85 35 85 35 Domestic hot water temperature max min Approx 60 36 60 36 pL Power supply voltage frequency V Hz 230 50 230 50 Power consumption 127 136 Electric system grades of protection IP X5D X5D Weight kg 31 31 Dimensions W x Hx D 400 770 315 400 770 315 installation Reference Standards The technical information and instructions provided herein below intended for the installer Servicing Technician so that the unit may be installed and serviced correctly and safely In the United Kingdom the installation and initial start up of the boiler must be by a CORGI 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 CORGI 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 1 5 813 Domestic Gas Installations the current Building Regulations reference should also be made to the current ETCI rules for electrical installation This appliance must be installed by a competent installer in accordance with current Gas Safety installation amp
88. te The parameter value will be displayed for 20 seconds then will begin to flash in alternation with the parameter e g 40 gt 991 11 Press the or button to select the new value e g T5 12 Press Menu Ok to save the change or press Esc to exit without saving E To exit press the ESC button until the normal display screen is restored 30 Maximum Heating Power adjustment The maximum heating power can be adjusted to between the maximum power shown on the display as 99 allowed by the boiler and the minimum power shown on the display as 0 To check the maximum heating power access menu 2 sub menu 3 parameter 1 check the value and if necessary modify it as indicated in the Heating Power Adjustment table Checking slow ignition power The soft light can be adjusted between the maximum power shown on the display as 99 and the minimum power shown on the display as 0 Change the parameter if the outlet pressure from the gas valve in the ignition phase measured when the boiler is in hot water heating operation does not coincide with the values shown in the Gas Table To check the slow ignition power access menu 2 sub menu 2 parameter O If needed change the parameter value until suitable pressure is achieved 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 su
89. the The boiler switches in sanitary mode only and indicating the set temperature user manual Stand by To switch off the boiler press the ON OFF 13 Switch off the boiler completely by switching the external electri cal switch to the OFF position the display will switch off Close the gas tap user Manual Appliance shut off conditions Operation shutdown error table The boiler is protected from malfunctions by means of internal checks performed by the electronic P C B which stops the boiler from operating if necessary In the event of the boiler being shut off in this manner a code appears on the control panel display which refers to the type of shut off and the reason behind it Two types of shut off may occur Safety shut off This type of error is volatile which means C that the boiler starts up again automatically as soon as the problem which caused the 101 shut off is removed The display will flash Err and the error code In fact as soon as the cause of the shut off disappears the boiler starts up again and continues to operate normally Whilethe boiler is shut off for safety reasons itis possible to attempt to restore normal operation by switching the appliance off and on again using the ON OFF button on the control panel If the boiler still indicates a safety shut off switch it off Make sure the external electric switch is in the OFF positi
90. the clips and the temperature sensor or overheat thermostat together 55 maintenance guide Main heat exchanger Drain boiler see 3 3 Remove the two screws and pivot the combustion chamber panel Remove the four pipes clips and Remove the two pipes to free the overheat sensor the heat exchanger Remove the two screws the Pull the heat exchanger towards top of the exchanger you 56 maintenance guide Burner unit PTION 6 Ignition electrodes S 7 Igniter 1 24 57 maintenance guide Spark generator Disconnect electrically the boiler and open the control Free the wire by removing the Disconnect the spark generator two screws and the earth from the control box aa E Ji ZI 1 Pull the spark generator towards you after removing the screw Unplug the ignition electrode from the spark generator Electrodes assembly _ 4 d 4 id T w 1 e 4 gu gt TH w wawa lad 4 Remove the combustion chamber Remove the screw and pull the front panel and unplug the electrodes electrodes assembly towards you 58 Burner Y OAN T 3 a J l 1 x d Isolate the gas supply Remove the electrodes as above U Remove the two screws from the Remove the compensation b flexible pipe and the two 5 5 from the gas elbow
91. the cover protecting the modulator 6 Reconnect the compensation tube 7 The flue sweep function is automatically deactivated after 10 minutes or when the eset button is pressed Checking the minimum power 1 To check the minimum power level loosen screw 2 Fig b and insert the pressure gauge connection pipe as above 2 Disconnect the air chamber compensation tube 3 Switch the boiler on at maximum power enabling the flue sweep function press the eset button for 10 seconds the display shows t press the programming key to activate operation at the minimum hot water power level The display willshow t Disconnect a wire from the modulator fig d the supply pressure should correspond to the value shown in the Gas Settings table in relation to the type of gas for which the boiler is designed If it does not correspond tighten or loosen the adjustment screw 4 fig d to adjust 4 When the check is over tighten screw 2 and make sure it is securely in place 5 Reconnect the modulator wire 6 Reconnect the compensation tube 7 The flue sweep function is automatically deactivated after 10 minutes or when the eset button is pressed Check all test nipples for tightness when all checks are complete commissioning 29 commissioning Accessing the settings and adjustment menus menu 2 Boiler parameters submenu 3 parameter 1 Max
92. ture range 0 Low Temperature ONLY FOR SERVICE DO NOT MODIFY 1 High Temperature Active only with MGZ MCM Kit Select Type of Thermoregulation 0 Fixed Flow Temperature 1 To enabled thermoregulation press Auto 1 Basic Thermoregulation 2 Room Temperature only 3 Outdoor Temperature only 4 Room Outdoor Temperature from 0 2103 5 button The display show the symbol 15 Only enabled when an outdoor sen sor is installed see graph previous page prameter 4 2 2 39 settings adjustment problem identification parameter Description ili Parallel curve shift Zone 2 Offset from 20 to 20 3353 adapt the heating curve to the system requirements shift the curve in parallel so that the calculated flow temperature is modified in addition to the room temperature By accessing this parameter and turning knob 5 Figs 1 and 2 page 4 the curve be shifted in a parallel manner The value is indicated on the display from 20 to 20 Room sensor Influence to calculate the from 0 to 20 set point temperature Thermoregulation enabled If setted 0 the room temperature doesn t influence the calculation of the set point If setted 20 the room temperature has the maximun influence to calculate the set point only active when the BUS device is connected Maximum Central Heating Temperature Zone2 from 40 to 82 C Minimum Central Heating Temperature Zone 2 from
93. ump will be activated at maximum speed If the Tflow Tret lt 20 2 C the circulation pump will be activated at minimum speed The minimum wait time between speed changes is 5 minutes 36 parameter Description settings adjustment problem identification menus NOT PRESENT NOT PRESENT NOT PRESENT 0 1 Post ventilation after Central Heating request Boost Time 0 OFF 1 from 0to 60 minutes only enabled with Room Thermostat on off and temperature adjustment activated parameter 421 or 521 on 01 Basic temperature adjustment This parameter can be used to set the delay time before the automatic increase in flow temperature in steps of 4 C max 12 C If the value of this parameter remains at 00 the function is not activated NOT PRESENT NOT PRESENT Central Heating Pressure Detection Device 0 Temperature Probes only COMBI 1 Pressure Switch SYSTEM 2 Pressure Sensor ONLY FOR SERVICE To be used only in substitution P C B NOT PRESENT DOMESTIC HOT WATER COMBI COMFORT FUNCTION COMBI 0 Disabled 1 Time Based 2 Always active Time Based Active for 30 minutes after a D H W request modification When the function is enabled the text COMFORT LED is illuminated This function may also be enabled or disabled by pressing the COMFORT button The COMFORT function of the appliance can be used to in
94. ward on the exterior of the building in a position where discharging possibly boiling water amp steam will not create danger or nuisance but in an easily visible position and not cause damage to electrical components and wiring The discharge must not be over an entrance or a window or any other type of public access Air Release Points These must be fitted at all high points where air naturally collects and must be sited to facilitate complete filling of the system The appliance has an integral sealed expansion vessel to accommodate the increase of water volume when the system is heated It can accept up to 8 litres 1 8 gal of expansion water If the heating circuit has an unusually high water content calculate the total expansion and add an additional sealed expansion vessel with adequate capacity This should be located on the return pipe work as close as possible to the pump inlet Mains Water Feed Central Heating A method for initially filling the heating system is supplied with the connection kit The filling loop is connected between the cold water inlet and the central heating flow connections and incorporates a non return valve To operate the filling loop it is necessary to open both quarter turn handles once the required pressure has been achieved close both handles and 12 disconnect the hose
95. wing will appear on the display This function is de activated automatically after 10 minutes or when the Esc button is pressed Note The boiler can also be forced to its maximum and minimum power by accessing menu 7 see settings adjustment problem identification menu paragraph Product of Combustion Discharge Monitoring In the boiler it is possible to monitor the correct operation of the flue exhaust air intake checking for a loss of general pressure in the system Through the use of a differential manometer connected to the test points of the combustion chamber it is possible to detect the AP of operation of the air pressure switch The value detected should not be less than 0 46 mbar 24 21 FF 0 70 mbar 28 32 FF under conditions of maximum thermal power in order for the boiler to function properly and without interruption settings adjustment problem identification 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 The available menus are as follows 2 Boiler Parameter Service code access reserved for qualified engineers

Ariston Clas 24 35 GC 47 116 59

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