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Summary of Contents for Benchmark System A 24 RFF

Page 1: ...FFI System A 30 RFFI Installation and Servicing Instructions Type C Boilers G C N 47 116 14 24 kW G C N 47 116 15 30 kW LEAVE THESE INSTRUCTIONS WITH THE END USER S SY YS ST TE EM M A A Country of destination GB IE ...

Page 2: ...ommendations made herein or in a manner not approved by the manufacturer To assist us in providing you with an efficient after sales service please return the guarantee registration card enclosed with the boiler without delay CAUTION In the United Kingdom installation start up adjustments and maintenance must be performed by a competent person only in accordance with the current Gas Safety Install...

Page 3: ... INSTALLATION REQUIREMENTS 13 11 INSTALLING THE BOILER 17 12 CONNECTING THE FLUE 19 12 1 FITTING THE COAXIAL FLUE 20 12 2 FITTING THE 5 FLUE 20 12 3 FITTING VERTICAL FLUE 22 12 4 FITTING THE TWIN FLUE 23 13 ELECTRICAL CONNECTIONS 26 14 COMMISSIONING AND TESTING 32 14 1 INITIAL PREPARATION 32 14 2 INITIAL START UP 32 14 3 ADJUSTING THE CO2 33 14 4 GAS CONVERSION 33 14 5 ADJUSTING THE MAXIMUM HEATIN...

Page 4: ... Chamber 46 18 2 1 Removing the combustion chamber front panel 46 18 2 2 Removing the burner 47 18 2 3 Removing the detection electrode 47 18 2 4 Removing the ignition electrode 47 18 2 5 Removing the fan 48 18 2 6 Removing the gas valve 48 18 2 7 Removing the heat exchanger 49 18 2 8 Removing the spark generator 49 18 3 ACCESS TO THE WATER CIRCUIT 50 18 3 1 Drain down 50 18 3 2 Removing the 3 way...

Page 5: ...temperature setting System Plus only 31 Central Heating start button and temperature setting 32 Menu button 33 Reducing button 34 Increasing button 35 Setting button Connecting bracket Taps shown in Open position fig 2 39 Gas service tap 40 Cylinder return valve System Plus only 41 Central heating flow isolating valve 42 Central heating return isolating valve 43 44 Filling taps 45 Filling loop Fig...

Page 6: ...the time if the room thermostat is OFF Room thermostat request symbol BURNER ON and output level The flame digits will increase or decrease depending on the output Flame digit Burner ON OPEN CLOSED When DHW is drawn the display indicates the following Programming button button not activated the domestic hot water exchanger temperature holding function is activated permanently Yellow button activat...

Page 7: ...ral Heating knob turned on and the room thermostat set to its anti frost setting usually between 5 C and 10 C As with your car your boiler will work more reliably and efficiently if regularly serviced We recommend an annual service check The service history of the appliance will be marked in the Service Interval Record Section 25 The manufacturer s guarantee is for 2 years from the date of purchas...

Page 8: ... 00 pm ON periods are set by sliding all tappets between the ON time and the OFF time to the outer edge of the dial The tappets remaining at the centre of the dial are the OFF periods 4 For operation Put the selector switch B to the symbol to control the central heating by the clock Put the switch B to I to select permanent operation or to 0 to turn the central heating off permanently 1 1 2 2 3 3 ...

Page 9: ...key program ON ON Continuously ON OFF OFF Continuously OFF Operating the time switch The steps marked with the symbol are necessary to carry out a switching program Preparing for Operation Activate the Res switch RESET to reset the time switch to its default setting activate using a pencil or similar pointed instrument Do this every time you wish to reset the time switch to erase all switching tim...

Page 10: ...subsequent switching instructions Manual Override Switch With the you can change the current setting at any time The switching program already entered is not altered Reading the programmed switching times Pressing the Prog button displays the programmed switching times until the first free memory location appears in the display If you now press the Prog button once again the number of free memory ...

Page 11: ...21 Main exchanger outlet thermistor 22 Overheat sensor 23 Central heating pressure relief valve 24 Manual air vent with pipe 25 Thermo fuse INSTALLER S INSTRUCTIONS 17 Fig 6 18 7 Description 11 23 1 2 3 4 5 6 8 12 13 14 7 Fig 5 20 21 10 9 22 16 42 24 25 31 27 26 35 29 Fig 7 34 32 33 30 26 Display 27 On off push button and power on indicator light 29 Reset push button and red indicator locking ligh...

Page 12: ...sel Volumes 6 litres Pressure 0 7 bar The volume of the expansion vessel in a pressurised appliance varies according to the average operating temperature in C the static height which is the difference in metres between the highest point of the appliance and the expansion vessel axis The minimum cold filling pressure of the appliance is 1 bar recommended pressure between 1 2 and 1 7 bar The pressur...

Page 13: ...l products such as chlorine swimming pool area or ammonia hair dresser or alkaline products launderette Flue Detailed information on flue assembly can be found in Section 12 Connecting the flue The boiler must be installed so that the flue terminal is exposed to the free passage of external air at all times and must not be installed in a place likely to cause nuisance It must not be allowed to dis...

Page 14: ...eze products such as Fernox ALPHI 11 which will prevent rust and incrustation taking place Periodically check the pH of the water anti freeze mixture of the boiler circuit and replace it when the amount measured is out of the range stipulated by the manufacturer 7 pH 8 DO NOT MIX DIFFERENT TYPES OF ANTI FREEZE In under floor systems the use of plastic pipes without protection against penetration o...

Page 15: ...ensate siphon iii Terminating into a gully below the grid level but above the water level iv Into a soakaway NOTE If any condensate pipework is to be installed externally then it should be kept to a minimum and be insulated with a waterproof insulation and have a continuous fall The total length of external pipe used should not exceed 3 metres Some examples of the type of condensate terminations c...

Page 16: ...tion Requirements continued 3 External termination of condensate drainage pipe via internal discharge branch e g sink waste proprietary fitting 4 External termination of condensate drainage pipe via condensate siphon ...

Page 17: ...t the valves to the boiler using the washers provided in the plastic bag 2 x fibre washers for the C H flow and return 1 x rubber washer for gas connection Safety valve discharge The pressure relief valve tube is made of copper It should terminate below the boiler safely outside the premises Care should be taken that it does not terminate over an entrance or window or where a discharge of heated w...

Page 18: ...18 1 2 A A Fig 13 Fig 15 Fig 12 11 Installing the Boiler continued Fig 14 P P ...

Page 19: ...ntact with or close to inflammable material and must not pass through building structures or walls made of inflammable material When replacing an old appliance the flue system must be changed Important Ensure that the flue is not blocked Ensure that the flue is supported and assembled in accordance with these instructions 12 Connecting the Flue IMPORTANT BEFORE CONNECTING THE FLUE ENSURE THAT 1 4 ...

Page 20: ...l 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 12 1 Fitting the coaxial flue Ø 60 100 Horizontal 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 24 FO...

Page 21: ...21 Fig 20 Fig 21 Fig 22 162 ...

Page 22: ...xhaust manifold and secure with the clamp fit the vertical adaptor onto the vertical starter kit note there is no need to use a clamp to secure this as it is a push fit connection the vertical flue kit must then be inserted through the roof flashing this will ensure that the correct clearance above the roof is provided as the terminal is a fixed height Should extensions be required they are availa...

Page 23: ...he pipe bridge this point must be adequately sealed with silicone sealant to avoid condense leakage at this point 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 The air intake pipe can be run horizontally however the ter...

Page 24: ...intake terminal Type 5 outlets should respect the following instructions 1 Use the same ø 80 mm flue pipes for the gas intakes and exhaust gas ducts 2 If you need to insert elbows in the gas intake and exhaust gas ducts you should consider for each one the equivalent length to be included in the calculation of developed length 3 The exhaust gas duct should jut above the roof by at least 0 5 m 4 Th...

Page 25: ...AIR INTAKE AIR INTAKE AIR INTAKE MUST NOT BE FITTED ABOVE THE EXHAUST NOTE DRAWINGS ARE INDICATIVE OF FLUEING OPTIONS ONLY TYPE 1 TYPE 5 TYPE 4 TYPE 3 TYPE 2 Fig 29 12 4 Fitting the twin pipe flue Ø80 80 continued ...

Page 26: ...he link on the ter minal block Diagram A Fig 32 Note Use only controls designed for voltage free switching or 24V supply Do not connect to a 230V supply and do not run 230v cables alongside the low voltage cables All necessary settings for room thermostat opera tions are described in Section 17 ADJUSTMENTS AND SETTINGS 13 Electrical connections P P Fig 30 P1 P2 ON OFF A1 A2 A3 A4 B1 B2 B3 B4 P3 S ...

Page 27: ... fitted using a volt free switching time clock remove the link wire and connect the switching wires from the time clock following points above see also Diagram B Fig 32 If using an external time clock and room thermostat remove the link wire and connect in series as above see also Diagram C Fig 32 Live and Neutral connections to operate the clock motor must be taken from a suitable source Connecto...

Page 28: ...res Fig 34 Connect the time clock wires as follows MECHANICAL MODEL Fig 44 Red Wire Contact 1 Black Wire Contact 2 Black Wire Contact 3 Grey Wire Contact 5 NOTE THE TWO BLACK WIRES ON CONTACTS 2 3 CAN BE REVERSED DIGITAL MODEL Fig 36 Red Wire Contact 1 Black Wire Contact 2 Grey Wire Contact 3 NOTE SECOND BLACK WIRE IS NOT CONNECTED Push the clock back into the panel and refit the casing panel Fig ...

Page 29: ...th cases the boiler connection is shown as ROOM which relates to the terminal on the PCB for external controls see 12 FIG 31 When connecting the boiler to an external cylinder do not run 240V cables and the cables for the ROOM terminal Fig 38 together use separate cables to prevent induced voltage on the low voltage switching circuit NOTE THE USE OF A Y PLAN SYSTEM IS NOT POSSIBLE WITH THE SYSTEM ...

Page 30: ...30 WIRING DIAGRAM FOR CONNECTION TO AN OPEN VENTED CYLINDER DIAGRAM B ...

Page 31: ...31 WIRING DIAGRAM FOR CONNECTION TO AN MTS UNVENTED CYLINDER DIAGRAM A ...

Page 32: ...hould not be used Open the gas cock supplied with the connection kit to the appliance and check the gas connection on the appliance for leaks WATER TREATMENT The boiler is equipped with a stainless steel heat exchanger The detailed recommendations for water treatment are given in BS 7593 1992 Treatment of water in domestic hot water central heating systems the following notes are given for general...

Page 33: ...r as described in Section 18 5 page 50 14 3 Adjusting the CO2 Q Fig 39 1 Remove the casing panel as described in Section 18 1 page 41 2 Connect a manometer to the inlet test nipple on the gas valve turn on a hot tap and ensure the inlet working pressure is 20mbar If correct proceed as follows 3 Turn on the combustion analyser remove the combustion test point plug Q Fig 39 and insert the analyser p...

Page 34: ... between the high and low settings 5 Range rate the thermal power for central heating as detailed in Section 14 5 To adjust the maximum heating power it is necessary to follow the steps in Section 14 5 Menu 4 and adjust in relation to the chart on Page 35 Fig 42 6 Check the gas rate 7 Record the finding in the Benchmark Commissioning Checklist Page 59 8 Run the domestic hot water and adjust to the...

Page 35: ...hort 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 Instruct the end user on the correct procedure for checking and refilling the boiler 6 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 and...

Page 36: ... Locate the lower clips into the slots in the chassis Engage hooks N on the casing in notches R on the side panels M operation Fig 43 Fit the top of the panel in place Close the panel mounting clamps Fig 44 Screw in the two clamp locking bolts A Note it is essential to refit both locking bolts A Fig 43 ...

Page 37: ...s 20 seconds between each attempt After this should the boiler still not sense a flame error code A03 will appear on the LCD Should the boiler detect that the burner has lit the boiler continues to regulate as follows The NTC fitted on the outlet of the primary circuit exchanger is the only NTC to adjust the heat output of the boiler according to the adjustable setting point This point is adjustab...

Page 38: ...xt menu Setting a parameter in a section Press the or button to change from between sections Note When you arrive at the last section of a menu pressing the button will change to the the 1st section When you are at the first section pressing the button will change to the last section of the menu Changing section in a menu available only for menu 3 4 5 and 6 Press the setting button to enter the mo...

Page 39: ...1 code from 01 to 99 Last default occurred before the previous one 1 9 code from 01 to 99 x times Section Digit 1 Digit 2 Digit 3 and 4 Software version of display PCB 2 0 code from 01 to 99 Software version of main PCB 2 1 code from 01 to 99 Flue type 2 2 4 Condensation Fan speed in hundreds of rpm 2 3 from 01 to 99 Theoretical position of the 3 way valve System plus only 2 4 0 DHW 1 CH DHW flow ...

Page 40: ... 3 et 4 Inactive 3 0 DHW thermostatic kit fitted to boiler fix DHW temp to 65 C 3 1 0 non 1 oui Optional programmer action 3 2 0 on heating and reheating of tank 1 on reheating of tank 2 on the heating Inactive 3 3 Inactive 3 4 DHW Delay time before CH relight after a DHW cycle 3 5 0 to 5 mn by step 0 5 mn Inactive 3 7 ...

Page 41: ...e Pump post circulation duration 4 2 0 to 5 min by step 0 5 min Inactive 4 3 Maximum Central Heating flow temperature 4 4 50 to 85 by steps of 1 Minimum Central Heating flow temperature 4 5 25 to 50 by steps of 1 Inactive 4 6 Inactive 4 7 CH anti cycling delay 4 8 0 to 7 min by step 0 5 min CH maximum output range rating 4 9 Value from 0 to 10 Pmin Pnominal Menu 4 Boiler settings ...

Page 42: ...tion rate control mode press button Menu once x times once The combustion rate control mode will be inactive when boiler is in stand by mode heating mode with room thermostat and initial heating temperature reaches max heating recommendation boiler in lockout mode after the default settings have been restored or if the main supply fails power cut if the operator exits the 5th menu after 5 minutes ...

Page 43: ...djusted by the user 1 Variable heating setting depending on the external temperature 2 Variable heating setting depending on the room temperature Clima Manager 3 Variable heating setting depending on the external and room temperatures Clima Manager Compensation 6 1 If or 00 to 20 in intervals of 1 Slope 6 2 If or 0 3 0 5 1 0 1 2 1 5 2 0 2 5 3 0 Parallel shift 6 3 If or from 20 to 20 in intervals o...

Page 44: ...on menu button to gain access to menu 4 the display shows 40 0 or 40 1 Change for section 8 CH anti cycling delay press on button side times the display shows 48 2 5 factory setting 2 mn 30 s 4 menu 4 8 section 8 2 5 2 5 mn 2 mn 30 secondes Press on setting button one time the 3rd and 4th digits flash together Then press on to change the CH anti cycling delay the display shows 48 3 0 press on sett...

Page 45: ...are isolated and the boiler is cool Before and after servicing a combustion analysis should be made via the flue sampling point After servicing preliminary electrical system checks must be carried out to ensure electrical safety i e polarity earth continuity resistance to earth and short circuit IMPORTANT AFTER AN ANNUAL SERVICE THE SERVICE INTERVAL RECORD SECTION 25 PAGE 60 MUST BE COMPLETED All ...

Page 46: ...r Fig 49 9 Remove the air gas assembly and combustion chamber front Fig 57 10 Reassemble in reverse order 4 Disconnect the detection electrode cable Fig 50 5 Remove the earth cable from the ignition electrode Fig 51 and remove the ignition electrode cable from the ignitor Fig 52 6 Unplug the gas valve and fan connectors Figs 53 and 54 7 Unscrew the 4 nuts D on the combustion chamber Fig 55 8 Unscr...

Page 47: ...s are undamaged and the burner is positioned correctly Fig 60 If necessary replace the insulation too 1 Carry out step 18 1 1 2 Disconnect the detection electrode cable Fig 61 3 Remove the 2 screws G from the electrode manifold Fig 62 4 Pull the electrode from the combustion chamber Fig 63 5 Reassemble in reverse order 18 2 4 Removing the ignition electrode 1 Carry out step 18 1 1 2 Remove the ear...

Page 48: ...move Fig 69 5 Reassemble in reverse order 18 2 6 Removing the gas valve 1 Carry out step 18 1 1 2 Remove the air gas manifiold as in 18 2 1 Fig 70 3 Unscrew the three screws L on the air gas pipe and remove Fig 71 4 Unscrew the three screws holding the gas valve on the venturi Fig 72 5 Remove the gas valve from the venturi Fig 73 6 Reassemble in reverse order 7 The gas valve settings will need to ...

Page 49: ...t exchanger Fig 75c 18 2 8 Removing the spark generator 1 Carry out step 18 1 1 2 Disconnect the ignition electrode live neutral and earth cables from the ignitor Fig 79 3 Remove the screw N from the ignitor and remove Fig 80 4 Reassemble in reverse order Fig 75c Fig 75a Fig 78 5 Remove the two bolts securing the exchanger Fig 76 6 Remove the screw M2 then rotate clockwise the bearing frame Fig 77...

Page 50: ...he by pass tube see fig 87 3 Remove the clip Q2 and Q3 from the heating return and the pump see fig 88 89 4 Remove the two T25 screws P1 see fig 87 5 Remove the 3 way valve body pulling it toward you see fig 90 6 Reassemble in reverse order P1 Q3 Q2 Fig 86 Fig 89 Fig 90 fig 91 fig 92 R 1 Carry out step 1 2 1 and 1 2 3 2 Unscrew the two CHC screws R see fig 91 3 Remove the 3 way valve shutter pulli...

Page 51: ... 3 5 Removing the pump 1 Carry out step 18 1 1 2 Lower the electrical box cover as in step 18 1 2 3 Remove the PCB cover 4 Remove the pump plug from the control board and earth plug from earth socket see Fig 93 Fig 93 Fig 94 Fig 95 Fig 96 S2 S3 4 Unscrew the pump nut see Fig 94 5 Remove the clip S2 on the pump volute see Fig 95 6 Pull the pump toward you and remove the clip S3 securing the pressur...

Page 52: ... as in step 18 1 1 2 Pull off the thermostat connections Then remove the thermostat from the pipe by releasing it s securing clip see Fig 100 18 3 9 Removing the temperature sensors N T C s 1 Remove the casing as in step 18 1 1 2 Pull off the NTC connections Then remove the NTC from the pipe by releasing it s securing clip see Fig 101 Fig 98 Fig 101 Fig 100 Fig 99 5 Pull the expansion vessel to re...

Page 53: ...8 4 Access to the Control System 18 4 1 Removing the P C B s Fig 106 Fig 107 W2 W1 3 Release the three clips W2 and remove the electrical box cover see Fig 107 1 Carry out steps 18 1 1 and 18 1 2 2 Remove the screw W1 from the electrical box see Fig 106 Fig 105 Fig 104 18 3 12 Removing cleaning the condensate trap 1 Unscrew the cap of the condensate trap see Fig 104 2 Empty the condensate products...

Page 54: ...ne 9 Reassemble in reverse order 6 To remove the display PCB remove the two screw W3 and lift the PCB out see Fig 110 7 Reassemble in reverse order W4 18 5 Connecting the external sensor Fig 113 1 Reach to the main PCB as in step 18 4 1 2 Install the interface module supplied in the kit on the main PCB see Fig 113 3 Connect the wires between the external sensor and the interface see Fig 113 Fig 10...

Page 55: ...02 Pump protect display after 40s E 04 No flame detection E 05 Anti freezing system pump on E 06 Anti freezing system pump and burner on E 07 No water circulation in primary circuit E 08 No water in the primary circuit E 09 DHW sensor open circuit E 10 DHW sensor short circuit E 11 Flow sensor open circuit E 12 Flow sensor short circuit E 13 Return sensor open circuit E 14 Return sensor short circ...

Page 56: ...y time A03 No flame detected E04 Flame lift E18 Wait for a few minutes Press the reset button 29 Fig 114 the red led goes out and the boiler attempts to re light If the red indicator lights too frequently please call your local service centre Noises in CH system Air presence in CH system or Insufficient pressure Purge the system of air Section 14 2 page 28 and increase the system pressure Section ...

Page 57: ...low rate and temperature rise 16 Carry out a general inspection of the boiler 17 Check the flue and termination point 18 Remove any oxide from the detection electrode by using an emery cloth 22 2 Cleaning the primary exchanger Cleaning the exhaust side Remove the air gas assembly Section 18 2 1 Check that the exhaust passages are free if there are deposits present clean the exchanger with compress...

Page 58: ...BLOCK 0502 MOTOR THREE WAY VALVE 61302483 0506 VALVE KIT 61311597 0531 AIR SEPARATOR HEAD ASSEMBLY 61304608 0532 GASKET KIT 61304618 0537 PRESSURE RELIEF VALVE 61312668 0538 PUMP AIR SEPARATOR 15 50 61301964 PUMP AIR SEPARATOR 15 60 61303461 0539 OVERHEAT THERMOSTAT 100 C 61010572 277783 0543 STOPPED WATER THROTTLE 61311745 0554 PRESSURE SENSOR 0 8b 61310364 0600 ELECTRICAL BOX 0615 PRINTED CIRCUI...

Page 59: ...der 37 mbar Vr kg h 0 43 1 71 1 94 0 50 2 17 2 33 Membrane Diameter mm marking G20 mm without without G31 propane mm 4 4 4 6 Adjustable heating outlet temperature C 25 to 85 25 to 85 Central heating minimum flow rate l h 300 300 Central heating circuit maximum pressure Pw max bar 3 3 Central heating expansion vessel capacity L 6 8 Expansion vessel inflation pressure bar 0 7 0 7 Electric voltage 23...

Page 60: ...60 ...

Page 61: ...OILERS ONLY CONFIRM THE FOLLOWING THECONDENSATEDRAINHASBEENINSTALLEDINACCORDANCEWITH THE MANUFACTURER S INSTRUCTIONS YES FOR ALL INSTALLATIONS CONFIRM THE FOLLOWING THEHEATINGANDHOTWATERSYSTEMCOMPLIES WITHCURRENTBUILDINGREGULATIONS THEAPPLIANCEANDASSOCIATEDEQUIPMENTHASBEENINSTALLEDANDCOMMISSIONED INACCORDANCEWITHTHEMANUFACTURER SINSTRUCTIONS IFREQUIREDBYTHEMANUFACTURER HAVEYOURECORDEDACO CO2RATIOR...

Page 62: ...o COMMENTS SIGNATURE SERVICE 5 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 7 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 9 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 2 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 4 D...

Page 63: ...ance installation you must have it serviced to continue any guarantee offered into the following year Failure to do so will invalidate your guarantee and should an MTS engineer be required to attend and no proof of service documentation is made available then MTS will charge As part of the commissioning process it is a legal requirement to register all boiler installations or replacements with COR...

Page 64: ...liability for any errors or omission in the information contained in this document Manufacturer MTS SA France Commercial subsidiary MTS GB Limited MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459775 internet www mtsgb itd uk E mail info mtsgroup com Technical Support Help Line 0870 241 8180 Customer Service Help Desk 0870 600 9888 ...

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