User manual and Installation instructions GARDA M90F.24S
Contents
1. all Cejas a 3 N lt C E ARO E 0000000006000 21 J I 28 27 19 37 40 7 y 44 36 23 241 38 JUN d 16 22 j 18 X w lt ES i 13 11 15 12 14 Fig 4 2 Technical information Main diagram M90F 24SR M90F 28SR 42 46 2 is A z E 3 E 4 lt 28 Fig 4 3 Technical information Hydraulic specifications kPa bar 60 0 6 50 0 5 40 0 4 30 0 3 20 0 2 10 0 1 0 0 0 0 200 400 600 800 1000 1200 1400 V h Fig 4 4 The hydraulic specifications in Fig 4 4 represent the pressure available head for the central heat ing system as a function of the flow rate The load loss due to the boiler has already been subtracted Output with thermostat cocks shut off The boiler is fitted with an automatic by pass valve 41 on page 10 which protects the primary heat exchanger In case of excessive red2. GAS RATE m 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 IN ACCORDANCE 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 A CO CO RATIO READING YES CO CO RATIO HE OPERATION OF THE APPLIANCE AND SYSTEM CONTROLS HAVE BEEN DEMONSTRATED TO THE CUSTOMER E MANUFACTURER S LITERATURE HAS BEEN LEFT WITH THE CUSTOMER LJ 2 COMMISSIONING ENG S NAME PRINT 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 boiler manufacturer s instructions Always use the manufacturer s specified spare part
3. Fig 1 1 14 13 12 1 Case front panel Fig 1 2 bottom view of the boiler 2 Control panel 11 C h return valve 3 Control panel cover 12 D c w inlet valve 13 Gas inlet valve Control pane 14 D h w outlet pipe 4 C h circuit temperature and pressure gauge 5 C h flow valve 5 Time switch c h control 6 Lock out signal lamp EEN Technical data 7 Lockout reset button For detailed technical data see section 4 6 or 4 7 of this manual 90 245 90 285 M90F 32S x 10 M90F24SR gt M90F28SR 1 x Fig 1 3 not on M90F 24SR and M90F 28SR boilers E EN INSTRUCTIONS FOR USE 2 1 Warnings Biasi UK Ltd support the Benchmark initiat ive The Benchmark Log Book is located at the back of this manual and should be com pleted by the Installing Commisssioning Engineer and handed over to the User for future reference by other visiting En gineers Also included is the Service Inter val Record card that should be completed by the Service Engineer following the an nual service maintenance of the boiler and system All CORGI Registered Installers carry a CORGI ID card and have a registration number Both should be recorded in your Benchmark Log Book You can check your installer is registered by calling CORGI di rect on 01256 372300 In order to guarantee safety and correct oper ation it is essential that all the t
4. 2002 5 F E D C B Fig 2 14 Display and control panel Mode selector switch Reset button Enter button Increase setting button Decrease setting button On off button Time display ON OFF display Tommoou Setting the current time Note with a new unit or when the reset button B has been pressed and the selector switch A is to the O position the time display G is flashing Set the mode selector switch A to the O position and press the buttons D or E until the current time appears in the display G The clock starts by moving the switch A to the AUTO position Setting example shown in Fig 2 15 Current time 16 30 i A AUTO TIMER Fig 2 15 Instructions for use Setting the switching time 20 memory locations are available corresponding to 10 on off sequences Set the mode selector switch A the C1 position The symbols shown in Fig 2 16 appears in the display A a A AUTO TIMER Fig 2 16 Press the buttons D or E to set the desired ON time Press the enter button C to confirm the setting and to continue programming the OFF time Set the OFF time as explained above for the ON setting and confirm by pressing the enter button C Proceed in the same way for other settings Setting example shown in Fig 2 17 A ON time 7 45 B OFF time 10 30 A Fig 2 17 Activating the timed settings Set the mode selector switch A to
5. Air Flue exhaust Sampling points Fig 9 4 3 A small quantity of water will remain in the d h w heat exchanger after draining If the boiler is being drained to prevent freezing the d h w heat exchanger must be removed and inverted to drain fully or an antifreeze solution added Fig 9 5 Reference figures given the sections 4 6 Combustion analysis check 4 7 of this manual Flue gas figures To carry out a combustion analysis 1 removethe frontpanel ofthe case see the sec Cleaning the primary heat tion 9 2 in this manual exchanger 2 Remove the plugs indicated in Fig 9 5 Take off the front of the case 2 Take off the removable front of the air tight chamber and the front panel of the combustion chamber If you notice dirt on the fins of the primary heat ex changer 31 on page 10 cover the sloping surfaces of the burner 29 on page 10 entirely in a protective layer sheets of newspaper or similar 4 Brush out the primary heat exchanger 31 on page 10 with a bristle paintbrush NOTE When removing the airtight chamber cover it is not necessary to remove the screws lo cated at the top edge on either side 39 MAINTENANCE MAINTENANCE Maintenance Checking the pressurisation in the expansion vessel Empty the central heating system as described in section 9 4 of this chapter and check that the pres sure in the
6. Natural gas L PG FEN Procedures 1 Check that the gas cock 13 in Fig 9 3 fitted under the boiler is turned off and the appliance is is switched off at the mains isolating spur 2 Remove the front and side panels of the case see the section General access and emptying hydraulic circuits in the service manual 3 Take off the lid of the sealed chamber 4 Take the front panel of the combustion chamber off and remove the burner 29 on page 10 See section gnition and detection electrodes in the service manual for detailed in structions NM 5 Carry outthe conversion for the type of gas re Fig 8 2 placing the burner injectors correctly 10 Calibrate the gas valve according to the in 6 Re assemble the burner the front panel of the structions given in the service manual section combustion chamber and the lid of the sealed Modulating gas valve Adjustment chamber 11 Setthe correct gas pressure for central heating 7 Extract the control panel as explained in the output required see section 7 8 in this manual section 6 10 of this manual 12 Stick on the inside of the left hand side panel 8 Loosen the screws C and remove the service adjacent to the data badge the self adhesive panel Fig 8 1 label included with the conversion kit indicat ing the type of gas and the gas pressures to which the appliance has been set 13 Replace the service panel the front and side panels of the case 37 MAINTENA
7. Never shut off the radiator in the area where the room thermostat is installed If a radiator or a convector does not heat up check that no air is present in it and that its valve is open If the ambient temperature is too high do not alter the radiator valves Reduce the central heating temperature instead by means of the room ther mostat and the function selector 8 in Fig 3 1 Fig 3 1 Frost protection This appliance is provided with a built in anti freeze system that operates the boiler when the temperature is below 4 C Therefore when the boiler is not lit and used in cold weather with consequent risk of freezing do not switch off the boiler atthe fused spur isola tion switch or close the gas inlet cock EEN Periodic maintenance For efficient and continuous operation of the boiler it is advisable to arrange maintenance and cleaning by an Authorised Service Centre En gineer at least once a year During the service the most important compo nents of the boiler will be inspected and cleaned This service can be part of a maintenance con tract In particular you are advised to have the following checks carried out primary heat exchanger domestic hot water heat exchanger burner exhaust fume duct and flue pressurisation of the expansion tank filling up of the central heating circuit bleeding of airfrom the central heating system general c
8. User manual and Installation instructions GARDA Models M90F 24S M90F 28S M90F 32S M90F 24SR M90F 28SR A BIASI A Your boiler is electronically controlled and has electronic ignition The materials it is made of and the control systems it is equipped with give you safety a high level of comfort and energy savings to allow you to getthe greatest benefit out of independent Congratulations on your choice heating Remember that The manual must be read thoroughly so that you will be able to use the boiler in a safe and sensible way must be carefully kept It may be necessary for reference in the future First lighting up must be carried out by competent and responsible engineer The manufacturer disclaim all liability for any translations of the present manual from which incorrect interpretation may occur cannot be held responsible for non observ ance of instructions contained in this manual or for the consequences of any procedure not specifically described Using the boiler Before lighting the boiler you are ad vised to have a professionally qualified per son check that the installation of the gas supply is gas tight is of the correct gauge for the flow to the boiler is fitted with all the safety and control de vices required by the current Regulations Ensure that the installer has connected the pressure relief valve outlet to a drain pipe The manufacturers
9. Appliance category 112 Gas G20 20 mbar G30 29 mbar G31 37 mbar Country of destination United Kingdom GB Irealnd IE This appliance conforms with the EEC directive 90 396 and consequently it has the rightto make use of the brand name Moreover the appliance conforms with the EEC directive 87 308 relative to the prevention and elimina tion of radio disturbances The appliance is built to comply with the regulation now in force regarding gas appliance s safety and the European regulation now in force relative to safety of household and similar electrical appliances The manufacturer in the continuous pocess to improve his products reserves the right to modify the data expressed in the present documentation at any time and without prior notice The present documentation is an informative support and it cannot be considered as a contract to wards third parties Boiler installation and commissioning tips The installation must be carried out by aqualified person who will be responsible for observing the current Regulations Installing the boiler V Do not forget to remove the transit caps and plugs from the boiler connections these are fitted to every boiler V Keep the boiler clear of dust during in stallation and in particular do not allow any dust or debris to enter the top of the boiler where the flue connection is made It is rec ommended that you puta dust sheet over the top of the boiler unti
10. External controls terminal block Fig 6 15 9 Route the electrical supply flexible cord and the external control flexible cord as illustrated in Fig 6 16 Lock the flexible cords in place with the flexible cord clamps 30 the external control device To the fused spur isolation switch Fig 6 16 rx External frost protection 10 Connect the frost thermostat between ter minals 1 and 2 as shown in Fig 6 17 Do not connect live wires to terminals to which the room thermostat must be con nected Frost thermostat thermostat LO lt l Tel Tal T T ea 2 2 24 Power supply terminal block 2 1 External controls G terminal block 2 Fig 6 17 Connecting a M90F 24SR or M90F 28SR system boiler to a cylinder Two schematic wiring diagrams are given in this section showing two possible ways to connect an external programmer to a mid position diverter valve to provide independent timed and thermo static control of heating and hot water In both diagrams the earth wires are not shown for clarity Earth wiring must be fitted as necessary Installation Room thermostat L pply Progra
11. described in section 7 6 page 33 of this manual Maintenance AONVNALNIVIN 41 BENCHMARK No T Rey henchman GAS BOILER COMMISSIONING CHECKLIST SELLECIIVE BOILER SERIAL No NOTIFICATION No CONTROLS To comply with the Building Regulations each section must have a tick in one or other of the boxes TIME amp TEMPERATURE CONTROL TO HEATING ROOM T STAT 8 PROGRAMMER TIMER PROGRAMMABLE ROOMSTAT TIME amp TEMPERATURE CONTROL WATER _ CYLINDER T STAT 8 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 m hr ft hr BURNER OPERATING PRESSURE IF APPLICABLE N A mbar CENTRAL HEATING FLOW 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
12. must be complied with during installation To allow maintenance procedures it is necess ary to leave the minimum gaps indicated in Fig 6 1 Precautions Before mounting the bracket check that the di mensions for fitting the exhaust fume duct are complied with refer to the leaflet included with the flue kit packed separately 24 Installation Utilise the paper template supplied with the boiler to determine the fixing position for the bracketand boiler Securely mount the bracket to the wall using appropriate fixings suitable for the type of wall construction and capable of supporting the total wet load Refer to the weight given in the technical data tables specific for each model 6 4 Overall dimensions C 95 237 DA Aand B 35 165 7 A E 5 8 a y H o 85 CAM S LEM ROTA Wall mounting bracket 9 2 a Cold water outer inlet C h on Gas return ow 4 L 325 zl not present on c h only boilers A air intake flue outlet pipe 100 co axial B flue outlet pipe 80 twin kit C air intake pipe y 80 mm twin kit Fig 6 2 all dimensions in mm Joints Gas c h return c h flow Dw outer Pressure relief valve not present on M90F 24SR and M90F 28SR models Tab 6 1 sizes in mm o d 16 6 Mounting the boiler 1 Take the protective caps off t
13. 1 bar Values refer to tests with a 1 m chimney working at the nominal heat input INSTALLATION Technical information EEH Technical data M90F 325 Gas Nominal heat input kW 35 2 BTU h 120 102 Minimum heat input kW 15 5 BTU h 52 886 Maximum useful output kW 32 0 BTU h 109 184 Minimum useful output kW 12 7 BTU h 43 435 Central heating Maximum temperature C 85 Minimum temperature C 38 Maximum pressure kPa 250 bar 2 5 Minimum pressure kPa 30 bar 0 3 Available head kPa 27 in 1000 I h bar 0 27 Natural G20 Butane G30 Propane G31 Natural G20 Butane G30 Propane G31 Domestic hot water Natural Maximum temperature C G20 Minimum temperature C Maximum pressure kPa bar Minimum pressure kPa bar Propane G31 Flow rate minimum l min 30 rise l min 35 rise l min 40 rise l min Natural G20 Butane G30 Propane G31 calculated values subject to tolerance norm Pa 2 000 mbar 20 Pa 2 900 mbar 29 Pa 3 700 mbar Gas min Pa 180 mbar 1 8 Pa 500 mbar 5 0 Pa 670 mbar 6 7 m3 h kg h Internal fuse rating For the net calorific values of G20 G30 G31 see the technical data at page 14 1 mbar approximately equals 10 mm H20 18 min max 1 700 2 500 17 25 2000 3500 20 35 2500 4500 Gas pressures at the burner max Ignition 1 170 600 11 7 6 0 2 760 1 200 27 6 12 3570 1 300 35 7 13 Gas min max 1 64 3 73 But
14. 25 6 7 Fitting the flue system 26 6 8 Fluerestrictors 26 6 9 Choice offlue 26 6 10 Electrical connections 28 6 11 External frost protection 30 6 12 Connecting a M90F 24SR or M90F 28SR system boiler to a cylinder 7 Commissioning 32 7 1 Electrical installation 32 7 2 Gas supply installation 32 7 3 Filling the d h w system 32 7 4 Initial filling of the system 32 7 5 Lighting the boiler 33 7 6 Checking the gas pressure atthe burner 33 7 7 Adjusting the burner ignition 34 7 8 Adjustment of useful c h output 35 7 9 Checking the ignition device 36 7 10 Checking the flue system 36 7 11 Instructing the user 36 9 5 Combustion analysis check 39 9 6 Cleaning the primary heat exchanger 39 9 7 Checking the pressurisation the expansion vessel 40 9 8 Cleaning the burner 40 9 9 Checking the flue 40 9 10 Visual inspection of appliance 40 9 11 Gas pressures and soundness 40 Combi combination boilers models 90 245 M90F 28S C h only system boilers models M90F 24SR M90F 28SR APPLIANCE DESCRIPTION Overview 8 Function selector and c h temperature control knob 9 D h w temperature control knob 10 Appliance operation light Isolation valves
15. Close all air release valves on the c h system 10 Inspect the boiler and the system for water soundness and remedy any leaks discovered Filling the d h w system 11 Cold flush the system to remove any loose par 1 Close all hot water taps ticles and any system debris before starting the boiler for the first time 2 Open the cold water inlet valve 12 Fig 7 1 13 12 Open position Fig 7 1 32 Commissioning The flushing procedure must be in line with BS7593 Treatment of Water in d h w c h Sys tems When the installation and second filling are completed turn on the c h system and run it until the temperature has reached the boiler operating temperature The system must then be immediately flushed through This procedure must be repeated twice more During this operation we highly recommend the use of a c h flushing detergentin the quan tities as specified by the appropriate manufac turer whose function it is to dissolve any foreign matter which may be in the system The above operation could save the invalida tion of your boilers guarantee and will also pre vent problems which you may experience in the future if an inhibitory is not used Lighting the boiler Some products incorporate an anti cycling time delay It is normal when first switching the boiler on for the boiler to operate on heating for a few sec onds then switch off After 3 4 minutes has elapse
16. EXE overview 13 Gas inlet valve 32 33 34 35 14 D h w outlet pipe 15 C h flow valve 16 D h w temperature probe NTC 17 Main circuit drain valve 18 C h pressure relief valve 19 Pump 20 Pump vent plug 21 Automatic air purger valve 22 D h w flow switch 23 Modulation gas valve 24 Primary circuit flow switch 25 C h temperature probe NTC 26 Three way diverter valve 27 Flame detecting electrode 28 Ignition electrodes 29 Burner 30 Combustion chamber 31 Primary heat exchanger 32 Air pressure switch 33 Air switch pressure test points 34 Fan 35 Safety thermostat 36 Modulation operator 37 Gas valve outlet pressure test point 38 Gas valve inlet pressure test point 39 D h w heat exchanger 40 C h expansion tank 41 By pass valve 42 Venturi device 43 Domestic water circuit filter 44 D h w flow limiter 45 Flue outlet pipe 46 Air intake pipe z E 3 E 4 lt 25 24 23 22 21 20 19 18 17 16 Fig 4 1 11 C h return valve 12 Domestic cold water inlet valve 10 Technical information Main diagram M90F 24S M90F 28S 90 325 42 46 220 45
17. at the burner accordingly with the model of boiler installed If the ignition gas pressure is not set correctly see section 7 7 in this manual for the adjust ment procedure Ifignition gas pressure is cor rect switch dip switch 3 to the ON position 15 Switch offthe boiler turn offthe hot watertap s and disconnect the pressure gauge If the maximum and minimum gas pressures measured above are notin accordance with the technical data sections 4 6 4 7 or 4 8 then ad justment will be necessary A full explanation of the gas pressure adjustment procedure is given in the Gas Valve section of the service manual If maximum and or minimum gas pres sures are adjusted then the ignition gas pres 34 sure must be checked and adjusted if necessary Important after the gas pressure checks and any adjustment operations all ofthe test points and adjustment devices must be sealed EAM Adjusting the burner ignition 1 Turn off the boiler by means of the fused spur isolation switch provided adjacent to the ap pliance 2 Make sure that the function selector 8 is set to the position in Fig 7 6 and thatthe timer selec tor switch and room thermostat if fitted is set to demand heat 3 EA 2 5 14 7 O Fig 7 6 3 Unscrew the gas valve s outlet pressure test point 37 Fig 7 5 and connect a pressure gauge 4 Loosen the screws B and remove the service panel Fig 7 7 Fig 7 7 5 Turn on the
18. boiler 6 Check that the boiler lights up uniformly and adjust the ignition gas pressure if necessary Commissioning To adjust the ignition gas pressure set dip switch 9 Fig 7 8 tothe OFF position and adjust poten tiometer marked ACC with a screwdriver until correct ignition gas pressure is obtained 9 00 Fig 7 8 Refer to the table gas pressures atthe burner inthe sections 4 6 4 7 or 4 8 for appropriate value 7 Having finished this procedure reset dip switch 3 to the ON position LE Adjustment of useful c n output If the burner function selector dipswitch number 4 on the main P C B is set to the ON position it will activate the re ignition delay period of ap proximately 4 minutes When dipswitch number 4 is set to the OFF position there will be approxi mately 30 seconds re ignition delay period Whilst checking or adjusting the c h output and fault finding on the boiler it may be necessary to switch the re ignition delay mechanism dips witch 4 to the OFF position Refer to the diagrams shown in Fig 7 9 Fig 7 10 or Fig 7 11 and select the correct central heating output gas pressure to meet with the central heat ing system requirements With the boiler operating in c h mode use a suit able screwdriver to turn the adjustment potentio meter marked RISC Fig 7 8 Rotating the potentiometer anti clockwise reduces the maxi mum supply current to
19. the Regulations and by laws of the local water undertaking and in Scotland in accordance with the Building Stan dards Scotland Regulation Health and safety document n 635 Electricity at work regs It should also be in accordance with the British Standard Codes of Practice In Ireland IE The installation must be carried out by a Competent Person and installed in accord ance with the current edition of 1 5 813 2002 Do mestic Gas Installations the current Building Regulations and reference should be made to the current ETCI rules for electrical installations EEN Location of appliance The appliance may be installed in any room or in ternal space although particular attention is drawn to the requirements of the current I E E Wir ing 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 20 For Ireland IE reference should be made to the current edition of 1 5 813 2002 and the current ETCI rules for electrical installations Where a room sealed appliance is installed in aroom containing a bath or shower any electri cal switch or appliance control utilising mains electricity should be so situated that it cannot be touched by a person using the bath or shower The location must permit the provision of an ad equate flue and termination For unusual loca
20. the gas modulator device and thus reduces the gas pressure to the burner kW Natural G20 2 3 4 5 6 7 8 9 1011 12 90F24S me M90F28S mbar M90F 32S Fig 7 9 kW Butane G30 6 9 12 15 mam 90F24S me M90F28S M90F 32S 18 21 24 27 mbar Fig 7 10 35 3 E 4 lt z 3 E 4 lt Commissioning Propane G31 32 v 8 11 14 17 20 23 26 29 32 35 mam 90F24S me 90 285 M90F 32S mbar Fig 7 11 Checking the ignition device With the burner on high flame close the gas cock About 10 seconds after the lock out signal lamp 6 Fig 1 3 on page 1 must appear To reset the boiler press and release the boiler reset button 7 Fig 1 3 on page 1 Checking the flue system The flue system should be visually checked for soundness Check all clamps gaskets and fixings are secure and tight Ensure that the flue terminalis sited correctly in ac cordance with the flue fitting instructions and Fig 5 1 on page 21 of this manual To carry out a combustion check refer to the in structions given in the section 9 5 of this manual Reference figures are given in the sections 4 6 4 7 or 4 8 of this manual Flue gas figures Instructing the user Hand over this combined User amp Installation man ual and the Service
21. timed set tings Some products incorporate an anti cycl ing time delay It is normal when first switch ing the boiler on for the boiler to operate on heating for a few seconds then switch off After 3 4 minutes has elapsed the boiler will then re ignite and operate perfectly normally The ignition delay cycle does not prevent normal operation of the boiler to provide d h w V f you are in any doubts as to the installa tion or operation of the boiler please read the instruction manuals thoroughly and then if necessary contact Biasi UK for advice and assistance Please remember that if you are in any doubt about the installation of this product you can contact our Technical Helpline on tel 0121 506 1350 z 3 E 4 lt MAINTENANCE TABLE OF CONTENTS 1 Appliance description 1 1 Overview 1 2 Control panel 1 3 Isolation valves 1 4 Technical data 2 Instructions for use 21 08 2 2 Refiling procedure 233 Ontecnia a 2 4 circuit temperature Technical information Overview Main diagram M90F 24S 90 285 M90F 32S Hydraulic specifications Expansion vessel Technical data M90F 24S M90F 24SR Technical data M90F 28S M90F 28SR Technical data M90F 32S General requi
22. when replacing all controls SERVICE 1 DATE SERVICE 2 DATE ENGINEER NAME ENGINEER NAME COMPANY NAME COMPANY NAME TEL No TEL No CORGI ID CARD SERIAL No CORGI ID CARD SERIAL No COMMENTS COMMENTS SIGNATURE SIGNATURE SERVICE 3 DATE SERVICE 4 DATE ENGINEER NAME ENGINEER NAME COMPANY NAME COMPANY NAME TEL No TEL No CORGI ID CARD SERIAL No CORGI ID CARD SERIAL No COMMENTS COMMENTS SIGNATURE SIGNATURE SERVICE 5 DATE SERVICE 6 DATE ENGINEER NAME ENGINEER NAME COMPANY NAME COMPANY NAME TEL No TEL No CORGI ID CARD SERIAL No CORGI ID CARD SERIAL No COMMENTS COMMENTS SIGNATURE SIGNATURE SERVICE 7 DATE SERVICE 8 DATE ENGINEER NAME ENGINEER NAME COMPANY NAME COMPANY NAME TEL No TEL No CORGI ID CARD SERIAL No CORGI ID CARD SERIAL No COMMENTS COMMENTS SIGNATURE SIGNATURE SERVICE 9 DATE SERVICE 10 DATE ENGINEER NAME ENGINEER NAME COMPANY NAME COMPANY NAME TEL No TEL No CORGI ID CARD SERIAL No CORGI ID CARD SERIAL No COMMENTS COMMENTS SIGNATURE SIGNATURE 17962 0917 8 5006 52A5 UK Biasi UK Ltd Newman Park Western Way Wednesbury WS10 7BJ Sales Tel No 0121 506 1340 Sales Fax No 0121 506 1360 Service Tel No 0121 506 1350 Service Fax No 0121 506 1370 www biasi co uk
23. 06 107 13 0 44 353 28 4 96 895 10 8 36 847 C 85 Minimum temperature C 38 Maximum pressure kPa 250 bar 2 5 Minimum pressure kPa 30 bar 0 3 kPa 27 Available head in 1000 I h bar 0 27 Domestic hot water M90F 28S only Maximum temperature C 55 Minimum temperature C 35 Maximum pressure kPa 1 000 bar 10 bar 0 3 Flow rate minimum l min 30 rise 35 rise 40 rise l min l min l min calculated values subject to tolerance Natural G20 130 Butane G30 77 Propane G31 77 Gas supply pressures Gas norm min max Natural Pa 2 000 1700 2500 G20 mbar 20 17 25 Butane Pa 290 2000 3500 G30 mbar 29 20 35 Propane Pa 3700 2500 4500 G31 mbar 37 25 45 Gas pressures at the burner Gas min max Ignition Natural Pa 180 G20 mbar 1 8 Butane Pa 450 G30 mbar 4 5 Propane Pa 570 931 mbar 5 7 1170 600 11 7 6 0 2 760 1 200 27 6 12 3570 1 300 35 7 13 Gas min max Natural m8 h 3 29 G20 G30 Propane kg h 1 00 2 41 G31 For the net calorific values of G20 G30 G31 see the technical data at page 14 1 mbar approximately equals 10 mm H20 16 Technical information Flue design Flue pipe diameter Coaxial mm 60 100 Twin split pipes mm 80 Roof 80 125 Nominal heat flow rate kW 31 1 Exhaust temperature C 165 INSTALLATION Smoke production kg h 70 6 CO content ppm lt 100 Exhaust temperature C 165 Water volume in the boler I kg 1 1 up to
24. 50 G From external corners 75 H Above ground or balcony level 300 l From surface facing a terminal 600 4 From a terminal facing a terminal 1 200 From opening the port e g door window into dwelling 1 200 L Vertically from a terminal in the same wall 1 500 M Horizontally from a terminal in the same wall 300 N Above the roof pitch with roof slope less than or equal to 30 350 Above the roof pitch with roof slope more than 30 600 O From wall face specific manufacturer requirements Gas supply The Gas meter is connected to the service pipe by the local gas region or a local gas region contrac tor If the gas supply for the boiler serves other appliances ensure that an adequate supply is available both to the boiler and the other appliance when they are in use at the same time Pipework must be of adequate size Pipes of a smaller sizethan the boiler inlet connection should not be used Installation pipes should be fitted in accordance with BS 6891 and the complete installation should be tested for soundness For Ireland IE refer to 1 5 813 2002 EEN Air supply The room in which the boiler is installed does not require a purpose provided air vent Ventilation If installed in a cupboard or compartment it is not necessary to provide additional ventil
25. 500 600 Its hr through the main heat ex changer 21 3 E 4 lt z E 3 E 4 lt General requirements Ifyou are installing a system that includes thermo static radiator valves TRV and or small bore 8 10 mm it may be necessary to fit an external by pass to facilitate correct operation of the boiler Air release points These must be fitted at all high points where air will natural collect and must be sited to facilitate com plete filling of the system Expansion vessel The appliance has an integral sealed expansion vessel to accommodate the increase of water vol ume when the system is heated Referto Tab 4 1 on page 13 for its technical data If the heating circuit has an unusually high water content calculate the total expansion and add an additional sealed expansion vessel with adequate capacity Mains water feed central heating There must be no direct connection to the mains water supply even through a non return valve without the approval of the Local Water Authority Mains water feed hot water supply The domestic section of the boiler is designed to withstand an internal domestic water pressure of 10 bar Where it is likely that the mains domestic water pressure may exceed 5 bar it is possible due to internal water hammer effects that the pressure within the domestic system can increase to a level in excess of the 10 bar limit In these circum
26. NCE Es MAINTENANCE 19 1 Warnings Side panels 3 Loosen the screws B Bring the bottom of the panels away from the boiler and lift them free ing them from the top hooks Fig 9 2 The procedures detailed in this chapter must be carried out only by a professionally qualified person Thus you are advised to contact an Authorised Service Agent For Ireland IE the servicing work must be carried out by a competent Person For efficient and continuous operation of the boiler you are advised to have at least once a year maintenance and cleaning done by an Approved Service engineer Isolate the appliance from the electricity supply by turning off the fused spur isolation switch adjacent to the appliance and turn off the gas cock before carrying out any pro cedures whatsoever for cleaning mainten ance opening or dismantling boiler panels Fig 9 2 19 2 Dismantling the external panels Emptying the d h w system O Front panel combi s 1 Loosen the two screws A Fig 9 1 1 Turn off the d c w inlet isolating valve 12 in 5 Lift and remove the panel Fig 9 3 and turn on the hot water taps and any pane drain cocks Po o lt M gt 11 13 Closed position Fig 9 3 19 4 Emptying the c h system 1 Close the c h isolating valves 11 and 15 in Fig 9 3 Fig 9 1 38 Maintenance 2 Open the central heating drain cock 17 in Fig 9 4
27. ale deposits and clogging 3 Fig 2 10 In these cases however it is advisable to install a small water treatment device or softener With such a device you should avoid periodic descal ing Consequently the d h w heat exchanger will keep its performance consistent for a longer period of time with resulting gas savings If the demand for d h w is so great as to prevent reaching a high enough temperature have the ap propriate output limiting valve installed by your in staller or an Authorised Service Engineer Extinguishing To turn the boiler off set the function selector 8 to the position shown in Fig 2 11 combi or Fig 2 12 c h only The appliance operation light 10 will flash every 4 seconds Instructions for use Fig 2 11 Fig 2 12 When you do not expectto usethe boilerfor along period 1 Switch off the electricity supply to the boiler by means of the fused spur isolation switch 2 Shutoffthe gas supply cock 13 and the valves for the water circuits fitted under the boiler Fig 2 13 3 Empty the water circuits if necessary as shownin the installation instructions in the sec tion maintenance SEA 13 Closed position Fig 2 13 Built in time switch combi The combiboilers are equipped with a builtin elec tronic time switch 5 Fig 1 3 on page 1 which controls the c h operation qua 27 0 LULGLULI 9
28. ane kg h 1 G30 22 2 78 1 20 2 73 1 6 Technical information Flue design Flue pipe diameter Coaxial mm 60 100 Twin split pipes mm 80 Roof mm 80 125 Nominal heat flow rate kW 35 2 Exhaust temperature C 155 Smoke production kg h 90 Flue gas figures Nominal heat input kW 35 2 Water volume in the boler I kg 1 1 up to 1 bar INSTALLATION Values refer to tests with a 1 m chimney working at the nominal heat input z 3 E 4 lt EM GENERAL REQUIREMENTS Biasi UK Ltd support the Benchmark initiative The Benchmark Log Book is located at the back of this manual and should be completed by the Installing Commisssioning Engineer and handed over to the User for future reference by other visiting Engineers Also included is the Service Interval Record card that should be completed by the Service Engineer following the annual service maintenance of the boiler and system For Ireland IE it is necessary to complete a Declaration of Conformity to indicate com pliance to 1 S 813 2002 This appliance must be installed by a compet ent person in accordance with the Gas Safety installation amp Use Regulations Related documents The installation of this appliance must be in ac cordance with the relevant requirements of the current Gas Safety Installation amp Use Regula tions the Local Building Regulations the current E E Wiring Regulations
29. are not responsible for damage caused by opening of the pressure relief valve and consequent escape of water if not connected correctly to the drain 1 On detecting the smell of gas don t operate any electrical switches the telephone or any device that may produce sparks open the windows and doors at once to create a draught of air which will purge the area shut off the gas cocks get the assistance of a qualified person 1 Donottouch the appliance with parts of the body that are wet or damp and or bare feet In case of structural work or mainten ance near the exhaust duct and or fume ex haust devices or their attachments turn off the appliance On completion of the work have a professionally qualified person check their efficiency 1 Repairs under guarantee must be car ried out only by an approved engineer using genuine spare parts Thus do no more than switching off the boiler yourself see the in structions 1 Your boiler allows heating up of water to a temperature less than boiling point must be connected to a central heating system and or a hot water supply system compatible with its performance and output can be used only for those purposes for which it has been specially designed must not be touched by children or by those unfamiliar with its operation must not be exposed to weather condi tions Safe handling of substances Biasi products are manufacture
30. ation for cooling for this particular product However con sideration must be given to clearance require ments for maintenance see section 6 2 and under no circumstances must stored articles be al lowed to come into contact with the boiler or flue pipe water circulation c h Detailed recommendations are given in BS 6798 and BS 5449 the following notes are given for general guidance For Ireland IE refer to 1 5 813 2002 Pipework Coppertubing to BS EN 1057 is recommended for water pipes Jointing should be either with capil lary soldered or with 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 it should be ensured as far as possible that the appliance heat exchanger is not a natural col lecting point for air Except where providing useful heat pipes should be insulated to prevent heat loss and to avoid freezing Particular attention should be paid to pipes pas sing 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 cock type valves within the system The by pass is calibrated to assure a minimum flow of
31. d in accordance with ISO 9000 and do not and willnot contain any hazardous materials or substances such as as bestos mercury or C F C s The appliance packaging does not contain any substances which may be considered a hazard to health Combustion chamber panels Material mineral fibers Known hazards Some people can suffer red dening and itching of the skin Fibre entry into the eye will cause foreign body irritation which can cause severe irritation to people wearing contact lenses Irritation to respiratory tract Precautions Dust goggles will protect eyes People with a history of skin complaints may be particularly susceptible to irritation High dust le vels are only likely to arise following harsh ab rasion In general normal handling and use will not present high risk follow good hygiene prac tices wash hands before touching eyes consum ing food drinking or using the toilet First aid Medical attention must be sought fol lowing eye contact or prolonged reddening of the skin Thermostat Temperature gauge Description Sealed phial and capillary contain ing liquid Known hazards irritating to skin eyes and throat Vapour is harmful Inflammable do not extinguish with water Precautions Do not incinerate Avoid contact with broken leaking phials Do not purposely puncture First aid medical attention must be sought follow ing eyes skin contact wash with clean water
32. d the boiler will then re ignite and operate perfectly normally The ignition delay cycle does not prevent normal operation of the boiler to pro vide d h w If external controls are fitted e g Timeclock room thermostat ensure they call for heat 1 Turn on the electricity supply to the boiler switching on the fused spur isolation switch The appliance operation light 10 will flash every 4 seconds 2 Turn the function selector 8 as in Fig 7 3 combi or Fig 7 4 c h only The appliance operation light 10 will flash every 2 seconds 10 8 7 6 E 7 f 1 7 o E gU OO aw Fig 7 3 oS e Fig 7 4 The boiler will now go through an ignition se quence and the burner will light If during the ignition attempt period the boiler fails to light the full sequence control p c b will go to lockout and the lock out signal lamp 6 will ap pear To reset the boiler press and release the boiler re set button 7 Fig 7 3 Checking the gas pressure at the burner This boiler has been tested to the highest qual ity control standards The maximum and minimum gas pressures are already set during this quality control process however the checking procedure must be fol lowed to ensure maximum operating efficiency from the boiler 1 Remove the front panel of the case see sec tion 9 2 in this manual 2 Loosen the internal screw 37 Fig 7 5 on the Outlet Press
33. ded to a total overall maximum permissible length Optional 45 and 90 elbows can be used to offset the flue route 28 Max length See Tab 6 4 for 24 and 28 kW models See Tab 6 5 for 32 kW model f Fig 6 10 Vertical flue kit condensation When fitting the 80 125 flue kits where the equival ent flue length exceeds 3 m a condensate collec tor and syphon are required The syphon must also be connected to a suitable drain If the appliance normally operates at minimum output power at very low temperatures e g 40 C return 60 C flow the above equivalent length should be reduced to 1 m Please see the boiler accessory leaflet available from your Supplier for details or contact Biasi UK Technical Helpline EXT Electrical connections Connection to the electricity supply 1 Remove the front panel of the case see the section 9 2 in this manual 2 Remove the screws and J Fig 6 11 3 Loosen the screws K Installation Fig 6 11 Fig 6 13 4 Remove the side panels or move the lower part For the electrical connection to the boiler use elec ofthe side panels as indicated in Fig 6 12 and tric wires which conform to the current regulations pull the control panel with flexible cord each core having a cross sec When completely pulled out the panel canro tion area not less than 0 75 mm tate 45 downwards to facilitate the operations 6 Connect the electrical s
34. e Supply pipe cold water inlet C h return pipe nt Fig 2 1 2 Open the valves of the filling loop and watch the gauge until it reaches normal filling pres sure as shown in Fig 2 2 QUII So 9 o6 7 Normal filling pressure Fig 2 2 3 Close the valves and remove the filling loop If you experience any difficulty with the oper ation of the boiler switch off the boiler immedi ately at the fused spur isolation switch and contact your Installer or an approved Service Engineer Air introduced into the boiler during this filling pro cess will vent through the automatic air purger fitted to the boiler You may also find it necessary to vent air from your radiator circuit using your radiator key however be aware that excessive venting will cause the pressure in the system to drop Always ensure thatthe pressure gauge is set atthe required pressure Instructions for use Ignition 1 Check that the valves located in the lower part of the boiler are open Fig 2 3 i a Open position lt Fig 2 3 2 Turn on the electricity supply to the boiler switching on the fused spur isolation switch The appliance operation light 10 Fig 2 4 will flash every 4 seconds stand by condition 3 Iftheboileristo be usedfor c h and d h w posi tion the function selector 8 as in Fig 2 4 combi or in Fig 2 5 c h only The appliance operation light 10
35. e flux residues swarfs oils and other installation de bris is removed Where a new boiler is fitted to an existing system it is important the debris from the existing system is fully removed in order to ensure the efficiency of the new appliance is maintained Details on flushing procedure are given in the sec tion 7 4 of this manual Domestic hot water circuit scale protection In areas where the water is hard i e more than 200 ppm total hardness as defined by BS 7593 1993 Table 2 itis recommended that a proprietary scale reducing device is fitted into the boiler cold supply within the requirements of the local water company General requirements EXT Electrical supply 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 Regulations and any local regulations which apply Reference should be made tu the current ETCI rules for electrical installations For Ireland IE refer to 1 5 813 2002 The boiler is supplied for connection to a 230 V 50 Hz supply The supply must be fused at 3A The method of connection to the electricity supply must facilitate complete electrical isolation of the appliance by the use of a fused double pole isola tor having a contact separation of at least 3 mm between poles or alternatively by the use of a 3A fused three pin plug and unswitched shuttered Socket out
36. ests are carried out by a competent and responsible service engineer before lighting up the boiler The tests are described in the installation in structions in section 7 commissioning Ensure that the c h circuit is regularly filled with water even if the boiler is only used for d h w supply checking thatthe pressure indi cated on the temperature and pressure gauge 4 is not lower than that shown in Fig 2 2 If the pressure reading on the pressure gauge is below that shown in Fig 2 2 then the system will requiretopping up A filling loop is normally provided by the installer for this purpose If you are in any doubt regarding this pro cedure you are advised to contact your In staller or an Approved Engineer This appliance is provided with a built in anti freeze system that operates the boiler when the temperature is below 4 C Therefore when the boiler is not lit or used in cold weather with consequent risk of freezing do not switch off the boiler atthe fused spur isolation switch or close the gas inlet cock When you do not expect to use the boiler for a long period and the boiler is notto be used for frost protection then follow the instructions given in section 2 6 on page 4 EEllRetilling procedure 1 Isolate the boiler from the electrical supply at the fused spur Reconnect the filling loop as demonstrated in Fig 2 1 Control valve Double check valve Temporary Z connection 5 Control valv
37. expansion vessel is not less than 1 bar See also section 4 5 page 13 of this manual If the pressure is lower take steps to correct the pressure level Cleaning the burner The sloping and multi gas type burner 29 on page 10 does not need special maintenance but it is sufficient to dust it with a bristle paintbrush To reach the burner 1 Take off the front of the case 2 Take off the removable front of the air tight chamber and the front panel ofthe combustion chamber 3 Brush out the burner with a bristle paintbrush NOTE When removing the airtight chamber cover it is not necessary to remove the screws lo cated at the top edge on either side 40 Checking the flue Have the integrity of the flue outlet pipe 45 on page 11 air intake pipe 46 on page 11 checked periodically the venturi device 42 on page 11 cleaned and the efficiency of the flue safety circuit checked at least once a year For details see the section Fan venturi device and air pressure switch in the service manual For all the above maintenance operations it is ad visable to call an approved Service Engineer EXT Visual inspection of appliance Visually inspect all water joints seals and connec tions for any evidence of leakage and retighten grease or replace them as necessary EXI Gas pressures soundness Check appliance for gas soundness Recheck op erational pressures and adjust as necessary as
38. harges the exhaust gases Conse quently it is possible to extend the flue system to a greater distance than that provided by the stan dard horizontal co axial flue If either an additional 45 or 90 accessory elbow is used then the maximum permissible length of either pipe must be reduced by 0 90 m or 2 75 m respectively Fig 6 7 The graph in Fig 6 8 demonstrates the allowable equivalent lengths for the air supply and flue ex 27 z E 3 E 4 lt z 3 E 4 lt Installation haust pipes of models M90F 24S M90F 24SR M90F 28S and M90F 28SR M90F 24S M90F 24SR Flue exhaust a 3 M90F 28S 28 M90F 28SR 26 24 22 20 18 8 Restrictor 47 mm Restrictor 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 Air intake b Fig 6 8 all dimensions in metres The graph in Fig 6 9 demonstrates the allowable equivalent lengths for the air supply and flue ex haust pipes of model M90F 32S Flue exhaust a M90F 32S 9 8 7 6 5 4 3 No 2 Restrictor 1 0 0 112 3 4 5 6 7 8 9 1011121314 15 16 Air intake b Restrictor 50 mm Fig 6 9 all dimensions in metres Vertical roof kit Fig 6 10 This kit allows vertical termination of the flue pipe through the roof The kit is 1 2 m in length Exten sion pieces axial are also available which al lows the flue system to be exten
39. he boiler pipe work 2 Thoroughly clean the connections Mount the boiler on its bracket Fix the c h valves A and gas cock to the boiler using the gaskets Fig 6 3 5 Fixthe 22 mm pipes C c h circuit to the c h valves and the 22 mm pipe D gas to the cock B using the gaskets 6 Repeatthe above procedure for the d c w inlet utilising the 1 cold water inlet valve E the 15 mm copper tail F with its connection nut and two gaskets 7 Fixthe 9 15 mm copper tail G with the 12 con nection nut and a Y gasket 8 Connect the pipe H Fig 6 4 from the pres sure relief valve to the safety discharge pipe work Fig 6 3 e R eG C d gt B D L 25 5 E 4 lt z 3 E 4 lt Installation Fig 6 4 Fitting the flue system Refer to the assembly instructions contained with in the chosen flue kit packaging for the correct as sembly and installation CEN Flue restrictors Two restrictors with different size are supplied with the boilers M90F 24S M90F 24SR M90F 28S M90F 28SR A 44 mm size is fitted to the boiler and a 47 mm size is supplied in a separate bag Two restrictors with different size are supplied with the boiler M90F 32S A 47 mm size is fitted to the boiler and a50 mm size is supplied in a separate bag The size is marked on the restrictor body For t
40. he correct use of the restrictors with co axial pipes o 60 100 mm refer to Tab 6 2 for models M90F 24S M90F 24SR 90 285 and M90F 28SR Tab 6 3 for model M90F 32S For the correct use of the restrictors with vertical roof kit 0 80 125 mm refer to Tab 6 4 for the models M90F 24S M90F 24SR M90F 28S M90F 28SR Tab 6 5 for the model M90F 32S For the correct use of the restrictors with twin pipes refer to Fig 6 8 for the models M90F 24S M90F 24SR M90F 28S and M90F 28SR refer to Fig 6 9 for model 90 325 26 Models M90F 24S M90F 24SR 90 285 90 285 Equivalent length a 60 100 Between 0 3 and 1 m More than 1 m up to2 m More than 2 m up to 3 m Tab 6 2 FOR CO AXIAL STANDARD FLUE Tab 6 3 FOR CO AXIAL STANDARD FLUE M90F 28S M90F 28SR Tab 6 4 FOR VERTICAL ROOF KIT Model M90F 32S Equivalent length a 80 125 Between 0 5 and 4m More than 4 m up to 6 m Tab 6 5 FOR VERTICAL ROOF KIT The appropriate restrictor when necessary must be fitted in the flue outlet elbow as indicated in Fig 6 5 Installation Fig 6 5 CO Choice of flue The following flue kits are available for connecting to the boiler Standard horizontal flue kit Fig 6 6A Co axial 60 100mm nominal length 1m This kitis normally supplied with the boiler and can be fitted to allow discharge to the rear or either side of the boiler via the flanged boiler adapter elbow M
41. heck of the appliance s operation 3 4 External cleaning Before carrying out any cleaning disconnect the appliance from the electrical mains using the fused spur isolation switch fitted adjacent to the appliance To clean the external panels use a cloth soaked in soapy water Do not use solvents abrasive powd ers or sponges Do not carry out cleaning of the appliance and or its parts with readily flammable substances for example petrol alcohols naphtha etc EX Operational faults If the lock out signal lamp comes on this indicates that the safety lock out 6 Fig 3 2 has stopped the boiler To re start the boiler it is necessary to press the boiler reset button 7 Fig 3 2 Z For the first lighting up and following maintenance procedures for the gas supply it may be necess ary to repeat the resetting operation several times so as to remove the air present in the pipework If noises due to air bubbles are heard during operation you should check that the pressure on the tem perature and pressure gauge Fig 2 2 on page 2 is not below the correct setting If required top up the system correctly as de scribed in the section 2 2 of this manual Bleed any air presentin the radiators ifnecessary If the pressure on the temperature and pres sure gauge 4 on page 1 has gone down it is necessary to top up the appliance with water again so as to raise the pressure to an adequate
42. inimum length required is 0 3 m Maxi mum equivalent length of 3 metres for models M90F 24S M90F 24SR M90F 28S 90 285 and 2 7 metres for model M90F 32S can be achieved utilising extensions This flue system can only be used to discharge horizontally it is not de signed to enable termination in the vertical plane Vertical kit with 90 elbow Fig 6 6B Co axial 60 100mm Supplied with a straight flanged adapter a axial elbow and a co axial pipe with terminal this kit allows for a vertical rise of 0 5 m from the boiler In all circumstances the flue terminal must dis charge horizontally and the equivalent flue length must not exceed 3 metres for models M90F 24S M90F 24SR M90F 28S M90F 28SR and 2 7 metres for model M90F 32S Elbows 45 amp 90 Fig 6 6C Co axial 60 100mm Elbow kits enablethe standard flue kits to be offset to overcome obstructions or ensure the correct clearances for the flue terminal Each elbow used in addition to the standard flanged elbow reduces the overall acceptable length of the flue system as follows 45 reduce length by 0 5m 90 reduce length by 1m Fig 6 6 Twin pipe kits o 80 mm Fig 6 7 Various twin split pipes kits and optional acces Sories elbows are available to assist in the ter mination of the flue where the boiler is installed in a location remote to an outside wall These kits allow for separation of the air supply pipe from the pipe that disc
43. l you are ready to make the flue connection V Because every boiler is fired and tested live at the factory a small amount of water re mains within the boiler It is possible for this water to initially cause the pump to seize It is therefore recommended that the pump rotor be manually turned to free its rotation before turning the boiler on Remember to release the auto air purge before filling the boiler See the instructions to identify the location of this device 1 Do not remove the cap of the pressure test points of the air switch top left side ofthe boiler You are strongly advised to flush out the system both cold and hot in order to remove system and installation debris Itis also sensible to initially fire and com mission the boiler before connecting any ex ternal controls such as a room thermostat By this method if you have a subsequent prob lem following the addition of an external con trol you can eliminate the boiler from your fault analysis V Do not forget to range rate the boiler to suit the system requirements This pro cedure is covered in the commissioning sec tion of the installation manual If the boiler is fitted with a digital pro grammer when setting the times for auto matic operation remember that for every ON time there must be an OFF time to fol low and that on every occasion you enter a time you must also indicate which days that you want the boiler to follow the
44. let both complying with BS 1363 The point of connection to the electricity supply must be readily accessible and adjacent to the appliance except were the appliance is installed in a bathroom this must then be sited outside the bathroom 23 z E 3 E 4 lt E 3 E 4 lt INSTALLATION 16 1 Warnings The use of gas appliances is subject to statutory control it is essential to observe the current regulations and laws in force see also chapter 5 The appliance must discharge combustion products directly outside or into a suitable ex haust duct designed for this purpose Combustion products must be discharged using original flue kits only since they are inte gral parts of the boiler For LPG the appliance must also conform with the requirements of the distributors and com ply with current Regulations and laws in force The safety relief valve must be connected to a suitable drain or discharge in a safe manner The electrical wiring must conform with current Regulations in particular the boiler must be earthed using the correct bonding clamp Adjacent to the boiler a fused spur isolation switch must be installed which permits a complete switching off in the conditions of the overvoltage category Ill Refer to sec tion 6 10 in this chapter for the electrical connections In no circumstances will the manufacturer be held responsible if the warnings and in s
45. levelas described in the section 2 2 of this manual If topping up with water has to be done very fre quently have the system checked for leaks Useful advice If water comes out of the pressure relief valve Check on the temperature and pressure gauge 4 on page 1 that the pressure in the central heating circuit is not close to 3 bars In this case tempera ture rise in the circuit can cause the pressure relief valve to open So that this does not happen and to decrease the pressure to a normal value it is advisable to vent some of the water in the appliance through the bleed valves present in the radiators If in time a reduction in domestic hot water supply is observed The likely causes may be impurities caught in the domestic hot water flow switch filter or limescale deposited in the domestic hot water heat ex changer It is advisable to have the appliance cleaned out by an Authorised Service Centre En gineer If water should occasionally leak from the boiler shut off the valves positioned under the boiler Fig 2 13 on page 5 and call an Authorised Ser vice Centre Engineer If the appliance operation light 10 Fig 3 3 flashes very quickly the boiler is faulty Fig 3 3 In this case or in case of problems other than those mentioned here switch off the boiler as described in section 2 6 on page 4 and call a competent and responsible service engineer E TECHNICAL INFORMATION
46. m temperature C 85 C 38 Maximum pressure kPa 250 Gas pressures at the burner bar 2 5 kPa 30 bar 0 3 kPa 27 INSTALLATION mm Gas min max Ignition Minimum pressure Available head G20 mpar 18 ie 6 0 in 1000 1 bar 0 27 Butane Pa 500 2760 1200 G30 mbar 5 0 27 6 12 Domestic hot water M90F 24S only Propane Pa 610 3570 1300 Maximum temperature 55 031 mbar Sut 13 A Maximum pressure kPa 1 000 s Minimum pressure kPa 30 Natural m3 h 1 16 2 82 bar 0 3 G20 Flow rate Butane kg h minimum l min 030 0 87 2 09 30 rise min Propane kg h 0 85 2 06 s G31 35 rise l min 40 rise l min calculated values subject to tolerance Net calorific value at 15 C and 1013 25 mbar G20 34 02 MJ m3 G30 45 6 MJ kg G31 46 4 MJ kg 1 mbar approximately equals 10 mm H20 14 Technical information Flue design Flue pipe diameter Coaxial 60 100 Twin split pipes 80 Roof 80 125 Nominal heat flow rate kW 26 6 Exhaust temperature C 145 INSTALLATION Smoke production kg h 55 1 Water volume in the boler 1 kg 1 0 up to 1 bar Values refer to tests with a 1 m chimney working at the nominal heat input INSTALLATION Technical information Technical data M90F 28S M90F 28SR Nominal heat input kW BTU h Minimum heat input kW BTU h Maximum uselul output kW BTU h Minimum useful output kW BTU h Central heating Maximum temperature 31 1 1
47. manual to the end user and ex plain how to use the unit in both c h and d h w modes Take the User step by step through the lighting in structions Show the User how to switch off the appliance quickly and indicate the position of the electric supply isolator Explain the proper use and adjustment of all sys tem controls this will ensure the greatest possible fuel economy Explain the function and use of the function selec tor Explain and demonstrate the function of time and temperature controls if fitted Explain how to turn off the appliancefor both short and long periods and advise on the precautions necessary to prevent damage should the appliance be inoperative when freezing condi tions may occur Fill in the details required on the Boiler Guarantee Certificate and hand to the User advising them to return the correct section for boiler Guarantee reg istration Finally advise the User that for continued safe and efficient operation the appliance must be ser viced by a competent person at least once a year EN GAS CONVERSION 18 1 Warnings 9 setcorrectly the dip switch 2 to the correct position Fig 8 2 in accordance with the follo Procedures to adapt the boiler to the type of wing table gas available must be carried out by a com petent and responsible person Gas supply Position of dip switch 2 Components used to adaptitto thetype of gas available must be genuine parts only
48. mmer Cylinder lock MAINS thermostat d 230V a c Switched 3 Amp fused spur z 2 T Remove room 2 lt thermostat link DOO 1 2 3 m Valve colour key M90F 24SR BR Brown M90F 288R 7p BL Blue Mid position External control Z GR Grey diverter valve terminal block OR Orange Fig 6 18 relay controlled boiler Room thermostat Cylinder MAINS thermostat 230V a c Switched 3 Amp fused spur Do not A 5 16 remove room thermostat link 2 Valve colour key 12 3 BR Brown M90F 24SR BL Blue Mid position M90F 288R GR Grey diverter valve External control OR Orange terminal block Fig 6 19 directly controlled boiler 31 COMMISSIONING Ensure that the Benchmark Log Book is satis 3 Slowly open each draw off tap and close it factorily commpleted during the commssion only when clear water free of bubbles flows ing process The Log Bookis located atthe end out of this manual This manual should be handed to the User following completion of the installa T TH tion and commissioning process Failure to Initial filling of the system comply with these requirments may invalidate 1 Open the c h flow and return valves the manufacturers guarantee 2 Remove the front panel of the case see the electrical safety shall be carried out by a compet ent person i e polarity earth contin
49. r than 5 C Fig 2 8 Your qualified installer will be able to recommend the most suitable adjustment for your system The temperature and pressure gauge 4 Fig 1 3 on page 1 will allow you to check that the set tem perature is obtained EX D h w temperature combi The temperature of the d h w leaving the boiler can be varied from a minimum of about 35 C to a maximum of about 55 Fig 2 9 by turning the temperature control knob 9 Minimum s Maximum Fig 2 9 Adjustment of the d h w temperature is complete ly separate from that of the c h circuit The adjustment system integrated within the boiler automatically controls the flow of gas to the burner in order to keep the temperature of d h w delivered constant between the limits of maxi mum and minimum output Where the demand is ata low level or with the tem perature set to the minimum it is normal to see a cycle of lighting and extinguishing of the burner when running Adjustment It is advisable to adjust the d h w temperature to a level commensurate with the demand minimis ing the need to mix with cold water In this way the automatic control facilities will be fully exploited Moreover where the amount of limescale present in the water may be particularly great not exceed ing the position in Fig 2 10 ofthe d h w tempera ture control knob 9 corresponding to about 50 C Fig 2 10 minimises annoying incidences of sc
50. rements Related documents Location of appliance Flue system Gas supply Air supply Ventilation Water circulation c h Domestic 5 9 Water treatment 5 10 Electrical supply 6 Installation 6 1 08 6 2 Precautions for installation 8 Gasconversion 8 1 Warnings 8 2 Procedures 9 Maintenance 9 1 Warnings 9 2 Dismantling the external panels 9 3 Emptying the d h w system combi 9 4 Emptying the c h system Abbreviations used in the manual C h Central heating D h w Domestic hot water D c w Domestic cold water Main diagram M90F 24SR M90F 28SR WUNNN gt ob 38 2 5 D h w temperature combi 4 2 6 Extinguishing 4 2 7 Built in time switch combi 5 3 Useful advice 8 3 1 Central heating 8 3 2 Frost protection 8 3 3 Periodic maintenance 8 3 4 External cleaning 8 3 5 Operational faultS 8 6 3 Installing the bracket 24 6 4 Overall dimensions 25 6 5 Joihts ar is 25 6 6 Mounting the boiler
51. si tion The symbols shown in Fig 2 19 appears on the display w is AUTO TIMER Fig 2 19 The operation can be switched permanently on or off by pressing the button F and leaving the switch A in the TIMER position To force a timed delay on or off operation set the mode selector switch A in the TIMER position Set the time delay by pressing the button D or E and the operation can be forced on or off by pres sing the button F The time delay can be set within the following ranges Instructions for use 1 to 23 hours with steps of 1 hour 1 to 27 days with steps of 1 day The time delay setting is activated by moving the switch A to the AUTO position The ON OFF display H flashes indicating that the current state of operation has been forced To delete the timed delay setting setthe mode se lector switch A in the TIMER position press the button D or E until the symbols shown in Fig 2 19 appears in the display and then set the mode se lector switch A to the AUTO position Setting example shown in Fig 2 20 forced ON state for 4 hours AUTO TIMER Fig 2 20 Resetting To completely reset the timer press the reset but ton with a pointed object pencil CAUTION pushing the reset button will complete ly erase the settings as well as all the data includ ing the current time USEFUL ADVICE Central heating For reasonably economical service install a room thermostat
52. stances it is therefore recom mended that a 3 bar pressure reducing valve be fitted to the incoming mains water supply and a mini expansion vessel installed on the domestic circuit These devices will protect the boiler and the do mestic system from damage due to excessive do mestic water pressure Filling A method for initially filling the system and replac ing water lost during servicing must be provided and it must comply with local water authority regu lations The correct method is shown in Fig 5 2 The temporary connection must be removed immediately after filling 22 Control valve Double check valve Temporary connection iip Control valve Supply pipe cold water inlet C h return pipe nt Fig 5 2 The installer should ensure that no leaks exist either inside the boiler or on the system as fre quent filling of the system could cause premature scaling of the heat exchanger Domestic water The domestic water installation must be in accord ance with the relevant recommendations of BS 5546 Copper tubing to BS EN 1057 is recom mended for water carrying pipework and must be use for pipework carrying potable water For Ireland IE refer to 1 5 813 2002 Water treatment Central heating circuit Where a new boiler is fitted to a new system with either plastic or copper pipes it is important the system is fully flushed on completion to ensur
53. the AUTO posi tion shown in Fig 2 18 The current time appears in the display The ON OFF display H indicates the current state of oper ation according to the settings 9 ci ll auto C TIMER Fig 2 18 Note when the mode selector switch A is in the AUTO position and the boiler is switched off atthe fused spur isolation switch the display H indicates only the OFF state The other indications are blanked Reading the timed settings Setthe mode selector switch A to the C1 position The symbols shown in Fig 2 16 appears in the display Press the enter button C Each time the button is pressed the display showsthe details of the next setting Changing or deleting the timed settings Setthe mode selector switch A to the C1 position The symbols shown in Fig 2 16 appears in the display Press the enter button C until the display shows the setting to be modified or deleted The time setting can be modified now by pressing button D or E and the operation can be switched on or off by pressing the button F To delete a time set press the button D or E until the symbols shown in Fig 2 16 appears in the time display G The new settigs are memorized by moving the Switch A to a different position Manual operation The operation of the time switch can be forced on or off constantly or for a timed period To force constantly on or off the timer operation setthe mode selector switch A to the TIMER po
54. tions special procedures may be necessary and BS 6798 gives detailed guidance on this aspect A compartment used to enclose the appliance must be designed specifically for this purpose This appliance is not suitable for external installa tion Flue system The provision for satisfactory flue termination must be made as described in BS 5440 part 1 For Ireland IE refer to 1 5 813 2002 The appliance must be installed so thatthe flue ter minal is exposed to external air lt must not be installed so that the terminal dis charges into an other room or space as an out house or lean to It is important that the position of the terminal allows a free passage of air across at all times Theterminal should be located with due regard for the damage or discoloration that might occur to building products in the vicinity In cold and or humid weather water vapour may condense on leaving the flue terminal the effect of such steaming must be considered The minimum acceptable spacing from the ter minal to obstructions and ventilation openings are specified in Fig 5 1 General requirements Terminal position mm A Directly below a window or other opening 300 B Below gutters soil 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 75 F From internal corners 1
55. tructions contained in this manual have not been complied with Precautions for installation For the installation proceed as follows The boiler must be fixed to a strong wall 250 25 50 200 Fig 6 1 all dimensions in mm When installing the boiler in a cupboard cover or alcove allow at least 50mm permanent clear ance from the front face of the boiler Also en sure sufficient clearance to allow free access for servicing and the lowering of the front con trol panel If the boiler is installed outside cover the ap pliance to protect it against the elements and add some special anti freeze neutralised to the c h system Before installing the boiler on an existing c h system flush it out thoroughly before fitting the boiler so as to remove muddy deposits It is advisable to equip the system with a sedi ment filter or use a water treatment product in the circulating water The latter option in particular not only cleans out the system but also has an anti corrosive effect by promoting formation of a protective skin on metal surfaces and neutralising gases present in the water We recommend the use of a suitable universal inhibitory to protect the c h system from cor rosion CO Installing the bracket The dimensions for the exhaust fume duct de tailed in section 6 7 and the correct procedures for installing the duct depicted in the instruc tion leaflet included with the flue kit
56. uction ortotal blockage of water circulation in the central heating system owing to closure of the thermostatic valves or sys tem component cocks the by pass valve ensur es a minimum flow of water through the primary heat exchanger CEN Expansion vessel Note this boiler is designed for operation only in a sealed central heating system The height difference between the pressure relief valve and the highest point in the system may be 7m at most For greater differences increase the pre load pressure in the expansion vessel 40 on page 10 and the system when cold by 0 1 bar for each additional 1m Capacity Pre load pressure INSTALLATION Maximum volume of water in the system Tab 4 1 Where conditions are Average maximum temperature of the system is 80 C Initial temperature when filling up the system is 10 For systems with volumes greater than 1321 an additional expansion vessel must be provided Technical information Technical data M90F 24S M90F 24SR Natural G20 Nominal heat input kW 26 6 Butane G30 BTU h 90 754 Propane G31 Minimum heat input kW 11 0 BTU h 37 530 Gas supply pressures Maximum useful output kW 24 3 Gas norm min max BTU h _ 82906 Natural Pa 2000 1700 2500 Minimum useful output kW 9 1 G20 mbar 20 17 25 BTU h 31 047 Central heating Propane Pa 3 700 2 500 4 500 Maximum temperature G31 mbar 37 25 45 Butane Pa 2900 2000 3500 G30 mbar 29 20 35 Minimu
57. uity resis tance to earth and short circuit If a fault has occurred on the appliance the fault find ing procedure should be followed as specified in the service manual For Ireland IE it is necessary to complete a section 9 2 in this manual Declaration of Conformity to indicate com 3 Unscrew the cap on the automatic air purger z pliance to 1 S 813 2002 valve 21 Fig 7 2 one full turn and leave open permanently Electrical installation 4 Gradually open stopcock at the filling point lt connection to the c h system until water is Preliminary electrical system checks to ensure heard to flow do not open fully lt LE 4 2 EZH Gas supply installation 1 Inspectthe entire installation including the gas meter test for soundness and purge all as de scribed in BS 6891 For Ireland IE refer to 1 5 813 2002 2 Open the gas cock 13 Fig 7 1 on the appliance and check the gas connector on the appliance for leaks Fig 7 2 Be 5 Open each radiator air vent starting at the ES F lowest point of the system and close it only when clear water free of bubbles flows out 6 Purge the air from the pump by unscrewing the pump plug 20 Fig 7 2 release the pump shaft by turning in the direction indicated by the arrow on the information plate 7 Replace the pump plug 8 Continue filling the system The actual reading gt gt should ideally be 1 3 bar and not less than 0 3 bar 9
58. upply flexible cord on the internal parts coming from the fused spur isolation switch to the power supply terminal block of the boiler Fig 6 14 keeping the same connections for the live brown wire and the neutral blue wire External 3 A fuse or fused plug with same current rating is recommended Do not connect live wires to terminals to which the room thermostat must be con nected 7 Connectthe earth wire yellow green 3 E 4 lt Connection of a room thermostat The room thermostat must be connected to the terminal block situated next to the control panel When connecting any type of external control the link M in Fig 6 14 must be removed Fig 6 12 5 Loosen the screws L and remove the service panel Fig 6 13 29 lt 3 E 4 lt Installation To fused spur L isolation switch n A Power supply d terminal block RN S ASSUM SIL LS NL KLIK _9 2 1 01010 t Y NEON External conti S S to 212426 Fig 6 14 8 Connect the room thermostat between ter minals 1 and 3 as shown in Fig 6 15 Do not connect live wires to terminals to which the room thermostat must be con nected Room thermosta Power supply terminal block L N lt l lt l Tal T S y 1501901 ZA KZ
59. ure Test Point of the Gas Valve and connect a pressure gauge using a suitable hose 3 Set the d h w and c h temperature control knobs to their maximum position 4 Switch on the boiler and open at least hot water tap fully 5 Check the maximum gas pressure and com pare the value on the gauge with the value indi cated in the sections 4 6 4 7 or 4 8 gas pressures at the burner accordingly with the model of boiler installed 6 Checkthe maximum gas flow atthe gas meter and compare the value indicated in the sec tions 4 6 4 7 or 4 8 gas rate accordingly with the model of boiler installed 33 E 3 E 4 lt INSTALLATION Commissioning 7 Switch off the boiler 8 Disconnect the gas modulator coil by remov ing the electrical connector A Fig 7 5 Fig 7 5 9 Switch on the boiler 10 Check the minimum gas pressure and com pare the value on the gauge with the value indi cated in the sections 4 6 4 7 or 4 8 gas pressures at the burner accordingly with the model of boiler installed 11 Switch off the boiler and re connect the elec trical connector A to the modulator coil 12 Access the main control panel see section 6 10 follow steps 2 5 13 Switch on the boiler 14 Check the ignition gas pressure by setting dip switch 3 Fig 7 8 to the OFF position Compare the value on the gauge with the value indicated in the sections 4 6 4 7 or 4 8 gas pressures
60. will flash every 2 seconds operating boiler 10 N s f s 2 1 Fig 2 4 10 N Fig 2 5 4 Ifd h w supply only is required combi posi tion the function selector 8 as in Fig 2 6 The appliance operation light 10 will flash every 2 seconds operating boiler Fig 2 6 EZB c h circuit temperature The output temperature of c h water is adjustable from a minimum of about 38 C to a maximum of about 85 C Fig 2 7 by turning the function se lector 8 Adjustment of c h output on the boiler is auto matic The greatest output pre set in the factory can however be reduced in level according to actual system requirements this does not affect the maximum output in d h w operation Such adjustments must be carried out by a quali fied person therefore we advise you to contact your installer or Service Agent Adjustment of the boiler temperature alters the gas flow at the burner according to the thermal de mand in the system So itis usual to see the burner lit at the minimum level for more or less long periods Minimum Maximum Fig 2 7 Adjustment Instructions for use In order to achieve optimal settings for economy and comfort we recommend adjusting the oper ating temperature of the c h water according to the outside temperature positioning the knob as follows From 5to 15 C Between 5 and 5 C Lowe
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