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User manual and Installation instructions

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1. Z o E 3 x 00 14 12 16 13 15 Fig 4 2 Technical information PEN Hydraulic specifications 200 400 600 800 1000 1200 1400 l n Fig 4 3 The hydraulic specifications in Fig 4 3 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 45 on page 11 which protects the primary heat exchanger In case of excessive reduction or total 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 EY 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 44 on page 11 and the system when cold by 0 1 bar for each additional 1m For 24 Kw and 28 Kw Capacity kPa bar Pre load pressure Maximum volume of water in the system Tab 4 1 Where conditions are Average maximum temperature of the sy
2. 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 Fig 9 2 LEJ Combustion analysis check If it is necessary to carry outa combustion analysis remove the plugs indicated in Fig 9 1 Reference figures are given in the sections 4 5 4 6 of this manual Flue gas figures LEI Cleaning the primary heat exchanger 1 Take offthe 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 11 3 coverthe sloping surfaces of the burner 29 on page 11 entirely in a protective layer sheets of newspaper or similar 4 Brush out the primary heat exchanger 31 on page 11 with a bristle paintbrush 9 5 Checking the pressurisation in the expansion vessel Empty the central heating system as described in section General access and emptying hydraulic circuits in the service manual and check that the Maintenance pressure in the expansion vessel is not less than 1 bar See also section 4 4 page 13 of this manual If the pressure is lower take steps to correct the pressure level 9 6 Cleaning the burner The sloping and multi gas type burner 29 on page 11 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
3. 18 For Ireland IE reference should be made to the current edition of 1 S 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 locations 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 EEN 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 Theappliance must be installed so thatthe flue ter minal is exposed to external air It 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 cons
4. Wall hung fan flue room sealed high efficiency gas boiler User manual and Installation instructions GARDA HE Models M96 24SM B2 M96 28SM B2 GARDA HE SILVER Models M96 24SM D2 M96 28SM D2 A GARDA HE and GARDA HE SILVER are condensing high efficiency sealed chamber fan flue Congratulations on your choice gas boilers They are fully electronically controlled and have electronic ignition The materials they are made of and the control systems they are equipped with give you safety a high level of comfort and energy savings to allow you to get the greatest benefit out of independent heating GARDA HE and GARDA HE SILVER allow a higher efficiency by reducing the flue gas temperature such that the water vapour formed during the combustion is condensed out This allows a gain of useful heat that otherwise would be lost Remember that 1 The manual must be read thoroughly so that you will be able to use the boiler in a safe and sen sible way mustbe carefully kept It may be necess ary for reference in the future Y First lighting up must be carried out by competent and responsible engineer 1 The manufacturer disclaim all liability for any translations of the present manual from which incorrect in terpretation may occur cannot be held responsible for non ob servance of instructions contained in this manual or for the consequences of any pro cedure not specifically des
5. 33 5 9 Domestic water 21 7 12 Checking the condensate 5 10 Water treatment 21 drain pipe mirada 33 5 11 Electrical supply 21 7 13 Instructing the user 33 8 Gas conversion 34 9 4 Cleaning the primary heat exchanger 36 8 1 WarnNgS verse wa ata e a nts 34 9 5 Checking the pressurisation LLI 8 2 Procedures 34 in the expansion vessel 36 ES 9 6 Cleaning the burner 37 E 9 Maintenance 36 9 7 Checkingtheflue 37 E 9 1 Warnings ose RR 36 9 8 Drain pipe inspection 37 TT 9 2 Dismantling the external panels 36 9 9 Visual inspection of appliance 37 Emm 9 3 Combustion analysis check 36 9 10 Gas pressures and tightness 37 E lt x Abbreviations used in the manual C h Central heating D h w Domestic hot water D c w Domestic cold water E APPLIANCE DESCRIPTION 14 1 Overview 10 Appliance operation lights KEN Isolation valves 16 15 14 13 12 11 Fig 1 2 bottom view of the boiler Fig 1 1 11 Condensate drain pipe 1 Case front panel 12 C h return valve 2 Control panel 13 D c w inlet valve 3 Control panel cover 14 Gas inlet valve 15 D h w outlet pipe EEN Contro panel 16 C h flow valve 4 C h circuit temperature and pressure gauge 5 Time switch c h control IN Technical data 6 Lock out signal lamp For detailed technical data see sec
6. 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 circumstances 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 General requirements and it must comply with local water authority regu lations The correct method is shown in Fig 5 3 The temporary connection must be removed immediately after filling Control valve Double check valve Temporary y connection Control valve Supply pipe cold water inlet C h return pipe Fig 5 3 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 EX Domestic water The domestic water installation must be in ac
7. 2 Control valve 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 that the pressure gauge is set at the required pressure Instructions for use PEN ignition 1 Check that the valves located in the lower part of the boiler are open Fig 2 3 Im d ee y XA XC LC NE i eet ees Open position lt 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 If the boiler is to be used for c h and d h w position the function selector 8 as in Fig 2 4 The appliance operation light 10 will flash every 2 seconds operating boiler Fig 2 4 4 f d h w supply only is required position the function selector 8 as in Fig 2 5 The appliance operation light 10 will flash every 2 seconds operat
8. 7 commissioning Ensure thatthe c h circuit is regularly filled with water even if the boiler is only used for d h w supply checking that the pressure indicated 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 require topping 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 5 C Therefore when the boiler is not lit or used in cold weather with consequent risk of freezing do not switch off the boiler at the 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 not to be used for frost protection then follow the instructions given in section 2 6 on page 6 PEN Refilling 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 connection Supply pipe cold water inlet C h return pipe 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
9. C1 position The symbols shown in Fig 2 14 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 Set the mode selector switch A to the C1 position The symbols shown in Fig 2 14 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 14 appears in the time display G The new settings 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 set the mode selector switch A to the TIMER posi tion The symbols shown in Fig 2 17 appears on the display O c1 pic AUTO TIMER Fig 2 17 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 followin
10. 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 EX 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 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 EXA 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
11. d h w is so great as to prevent reaching ahigh enough temperature have the ap propriate output limiting valve installed by your in staller or an Authorised Service Engineer EX Extinguishing To turn the boiler off set the function selector 8 to the position shown in Fig 2 10 The appliance operation light 10 will flash every 4 seconds ie E Fig 2 10 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 14 and the valves for the water circuits fitted under the boiler Fig 2 11 Instructions for use 3 Empty the water circuits if necessary as shown in section General access and emptying hydraulic circuits in the service manual 14 Closed position Fig 2 11 Built in time switch The boilers are equipped with a built in electronic time switch 5 Fig 1 3 on page 2 which controls the c h operation INFFETES seal Lt rt x x oO o TIMER 2 Fig 2 12 002 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 TOomnmoou r 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 position the time display G is flashing Set
12. of the building Fig 6 6 Fig 6 7 Two restrictors with different size are supplied with the twin pipe kit and have to be installed between the boiler and the air intake adapter Fig 6 8 Air intake adapter K Restrictor e MIL c sa Fig 6 8 For the correct use of the restrictors with twin pipes refer to Tab 6 2 For M96 24SM M96 28SM Equivalent length Restrictor air duct flue duct Between 1 and 15 m More than 15 m up to 30 m Tab 6 2 Vertical roof kit Fig 6 9 This kit allows vertical termination of the flue pipe through the roof The kit is 1 2 m in length Exten sion pieces Co axial are also available which al lows the flue system to be extended to a total overall maximum permissible length Optional 45 and 90 elbows can be used to offset the flue route Each additional elbow reduces the overall accept able length of the flue system as follows 45 reduce length by 0 5 m 90 reduce length by 1 m 25 Z O E 3 E E 00 lt O E 3 x 00 Installation x Aa 8 9i Fig 6 9 CEN 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 10 3 Loosen the screws K Fig 6 10 4 Remove the side panels or move the lower part of the side panels as in
13. of the case 2 Take off the removable front of the air tight chamber and the front panel of the combustion chamber 3 Brush out the burner with a bristle paintbrush Checking the flue Have the integrity of the flue outlet pipe 49 on page 12 air intake pipe 50 on page 12 checked periodically the venturi device 46 on page 12 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 EEN Drain pipe inspection Check the soundness and integrity of the conden sate drain pipe Verify the cleaness and correct filling of the con densate traps EEN 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 EXT Gas pressures and tightness Check appliance for gas tightness Recheck oper ational pressures and adjust as necessary as de scribed in section 7 7 page 29 of this manual 37 MAINTENANCE BENCHMARKNo E EIE Benchmark GAS BOILER COMMISSIONING CHECKLIST GULLSUIIVE VAAK BOILER SERIAL No NOTIFICATION No CONTROLS To comply with the Building Regulations each section must have a t
14. operations all of the test points and adjustment devices must be sealed Re place the adjustment protection cap Checking the burner ignition 1 Turn the boiler OFF 2 Open the gas valve outlet pressure test point 41 Fig 7 4 and connect the gauge 3 Turn the boiler ON positioning the control se lectors 8 in the positions as shown in as in Fig 7 5 and ensure that the timer selector switch and room thermostat if fitted are set to heat demand 000 DO Fig 7 5 4 Watch the gauge and check to see if the igni tion pressure registered corresponds to the va lues as given in the Technical Data Turn off the Commissioning boiler and reignite it by turning the function se lector 8 to the OFF position and then back to that indicated in Fig 7 5 5 Repeatthis process two to three times leaving 30 second intervals between each ignition Check the ignition pressures and visually check that the burner lights uniformly and in a controlled manner 6 Ifthe burner ignition is not uniformly controlled then checks should be made to the flue installation and termination that the flue gasket as shown in Fig 6 5 page 24 is in place that the burner and injectors are clean that the boiler is set for the correct gas used see Section Gas Conversion of this manual 7 Ifthe ignition pressure recorded is not as indi cated in the Technical Data then refer to section Ignition gas pressure adjustm
15. position obtained on step 8 m M96 28SM By turning the knob 9 the lock out signal Fig 7 12 lamp 6 blinks quickly 2 per second indicating that the setting has changed and must be me morised by keeping pressed the reset button 7 for about 5 seconds until the lamps 10 all briefly simultaneously blink 14 To reset the boiler to the normal operation turn it OFF and ON by the function selector 8 In any case the boiler automatically resets to its nor mal operation after 10 minutes mbar 32 Commissioning kW Propane G31 o gs ope map MEI SR 7 10 13 16 19 22 25 28 31 34 37 96 24S5Ny m MO96 28SNy Fig 7 13 mbar Checking the ignition device With the burner on high flame close the gas cock After three ignition attempts within about three minutes the lock out signal lamp 6 Fig 1 3 on page 2 must appear To reset the boiler press and release the boiler reset button 7 Fig 1 3 on page 2 Checking the flue system The flue system should be visually checked for soundness Check all clamps gaskets and fixing are secure and tight Ensure that the flue terminal is sited correctly in ac cordance with the flue fitting instructions and Fig 5 1 on page 19 of this manual To carry out a combustion check refer to the in structions given in the section 9 3 of this manual Reference figures are given in the sections 4 5 or 4 6 of this manual Flue gas figures Checking th
16. re quirements of the Gas Safety Installation and Use Regulations and be approved by C O R G I Ensure that the Benchmark Log Book is satis factorily completed during the commissioning process The Log Book is located atthe end of this manual This manual should be handed to the User following completion of the installa tion and commissioning process Failure to comply with these requirements may invali date the manufacturers guarantee For Ireland IE it is necessary to complete a Declaration of Conformity to indicate com pliance to 1 S 813 2002 Electrical installation Preliminary electrical system checks to ensure electrical safety shall be carried out by a compet ent person i e polarity earth continuity 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 Gas supply installation 1 28 Inspect the entire installation including the gas meter test for tightness and purge all as de scribed in BS 6891 For Ireland IE refer to 1 5 813 2002 Open the gas cock 14 Fig 7 1 on the appliance and check the gas connector on the appliance for leaks 14 13 Open position Fig 7 1 Filling the d h w system 1 2 3 Close all hot water draw off taps Open the cold water inlet valve 13 Fig 7 1 Slowly open each draw off tap and close it only when clear water free of bu
17. the mode selector switch A to the 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 13 Current time 16 30 AUTO TIMER Fig 2 13 Setting the switching time 20 memory locations are available corresponding to 10 on off sequences Set the mode selector switch A to the C1 position The symbols shown in Fig 2 14 appears in the display ON Q Fig 2 14 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 15 A ON time 7 45 B OFF time 10 30 Instructions for use Fig 2 15 Activating the timed settings Set the mode selector switch A to the AUTO posi tion shown in Fig 2 16 The current time appears in the display The ON OFF display H indicates the current state of oper ation according to the settings Fig 2 16 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 Set the mode selector switch A to the
18. 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 9 in this chapter for the electrical con nections In no circumstances will the manufacturer be held responsible if the warnings and in structions contained in this manual have not been complied with EB Precautions for installation For the installation proceed as follows The boiler must be fixed to a strong wall 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 must be complied with during installation To allow maintenance procedures it is necess ary to leave the minimum gaps indicated in Fig 6 1 22 200 200 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
19. 4 MJ kg B The value is used in the UK Government s Standard Assessment Procedure SAP for energy rating of dwellings The test data from which it has been calculated have been certified by a notified body O values subject to tolerance 14 Technical information Gas pressures at the burner Flue design Gas Natural Butane Propane Flue pipe diameter G20 G30 G31 Coaxial 60 100 Max Pa 1080 2800 3550 Twin epiit pipes eim 80 mbar 10 8 28 0 35 5 Roof 80 125 Min Pa 150 550 770 us ii mbar 1 5 5 5 7 7 Nominal heat flow rate A D Ignition Pa 600 1200 1300 mbar 6 0 12 0 13 0 Exhaust temperature D 1 mbar approximately equals 10 mm H20 Mass flow rate D Flue gas figures Natural Butane Propane Nominal heat input A D G20 G30 G31 CO content m3 h kg h kg h INSTALLATION O content Ma 265 197 194 2 65 1 97 1 94 Mi CO content in 1 16 0 87 0 85 Exhaust temperature D Other specifications Height Width Depth Weight dry kg Water volume in the boiler kg up to 1 bar Butane G30 Propane G31 Electrical Data Voltage 230 Frequency 50 Power consumption 140 Protection degree IPX4D External fuse rating A 3 Internal fuse rating A F1 F2 3 15 AF D Values refer to tests with a 1 m chimney working at the nominal heat input 15 INSTALLATION Technical information ETS Technical data mod M96 28SM Heat input A Nominal kW 29 0 BTU h 98 942 kW 13 0 BTU h 44 353 Useful
20. Before installing the boiler on an existing c h system flush it outthoroughly before fitting the boiler so as to remove muddy deposits Itis 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 FEN Installing the bracket 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 Utilise the paper template supplied with the boiler to determine the fixing position for the bracket and 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 Installation 6 4 Overall dimensions B pw 9 A me 190 9100 Electric connection area A Band C c o a 29 ra outlet Condensate drain connection area A air intake flue outlet pipe co axial B f
21. 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 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 6 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 8 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 10 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE 17962 1230 3 0907 44A5 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
22. Installing the bracket 22 3 4 Periodic maintenance 9 6 4 Overall dimensions 23 q 3 5 External cleaning 9 6 5 JOMIS ies Waaa xod asd tases 23 far 3 6 Operational faults 9 6 6 Mounting the boiler 23 lt 4 Technical information ipu NGNE Ue cabak 24 7 MEE oer eatin b UMS i 6 9 Electrical connections 26 im i A CER 6 10 External frost protection 27 4 3 Hydraulic specifications 13 44 Expansion vessel 13 7 Commissioning 28 4 5 Technical data mod M96 24SM 14 7 1 Electrical installation MM 28 4 6 Technical data mod M96 28SM 16 7 2 Gas supply installation 28 i 7 3 Filling the d h w system 28 97 GENE Fal requirements ions 18 74 Initial filling of the system 28 5 1 Related documents rS 18 75 Condensate pipe and traps 29 5 2 Location of appliance 18 7 6 Lighting the boiler 29 9 3 ES system rata taa 18 7 7 Checking the gas pressure 5 4 Gas supply 19 at the burNner 29 5 5 Airsupply cee 19 7 8 Checking the burner ignition 30 5 6 Ventilation 19 7 9 Adjustment of useful c h output 31 5 7 Condensate drain 19 7 10 Checking the ignition device 33 5 8 Water circulation c h 20 7 11 Checking the flue system
23. R 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 CO2 RATIO READING NA YES CO CO RATIO THE OPERATION OF THE APPLIANCE AND SYSTEM CONTROLS HAVE BEEN DEMONSTRATED TO THE CUSTOMER THE MANUFACTURER S LITERATURE HAS BEEN LEFT WITH THE CUSTOMER COMMISSIONING ENG S NAME PRINT___________________ CORG ID No SIGN DATE SERVICE INTERVAL RECORD It is recommended that your heating system is serviced regularly and that you complete the appropriate Service Interval Record Below Service Provider Before completing the appropriate Service Interval Record below please ensure you have carried out the service as described in the boiler manufacturer s instructions Always use the manufacturer s specified spare part when replacing all controls SERVICE 1 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No COMMENTS SIGNATURE SERVICE 3 DATE ENGINEER NAME COMPANY NAME TEL No CORGI ID CARD SERIAL No 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
24. aning 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 EN 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 6 7 Fig 3 2 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 Safety lock out may occour even in case of an blockage of the condensate drainage e g plugged drain pipe It is advisable to check the condensate drainage pipe and traps for cleaness Useful advice In case of persistent lock out call a competent and responsible service engineer 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 4 is not below the correct setting If required top up the system correctly as de scribed in the section 2 2 of thi
25. aried from a minimum of about 35 C to a maximum of about 55 C Fig 2 8 by turning the temperature control knob 9 Maximum Fig 2 8 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 9 of the d h w tempera ture control knob 9 corresponding to about 50 C Fig 2 9 minimises annoying incidences of scale deposits and clogging 9 000 tm 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
26. bbles flows out Initial filling of the system 1 2 3 Open the c h flow and return valves Remove the front panel of the case see the section 9 2 in this manual Unscrew the cap on the automatic air purger valve 19 Fig 7 2 one full turn and leave open permanently Gradually open stopcock at the filling point connection to the c h system until water is heard to flow do not open fully Fig 7 2 5 Open each radiator air vent starting at the lowest point of the system and close it only when clear water free of bubbles flows out Commissioning 6 Purge theair from the pump by unscrewing the pump plug 21 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 should ideally be 1 3 bar and not less than 0 3 bar 9 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 11 Cold flush the system to remove any loose par ticles and any system debris before starting the boiler for the first time 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 immediat
27. cord 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 Ear 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 ensure flux residues swarfs oils and other installation de bris is removed Where a new boiler is fitted to an existing system itis 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 EM 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 I E E Regulations and any local regulations which apply Reference should be made to the current ETCI rules for electrical installations For Ireland IE refer to 1 5 813 2002 The boiler
28. cribed Using the boiler Y 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 isofthe correct gauge for the flow to the boiler is fitted with all the safety and control de vices required by the current Regulations 1 Ensure that the installer has connected the pressure relief valve outlet to a drain pipe The manu facturers 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 the installer has connected the conden sate outlet to a suitable drain pipe 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 1 Do not block or modify the condensate outlet and pipework Y 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 a
29. dicated in Fig 6 11 and pull the control panel When completely pulled out the panel can ro tate 45 downwards to facilitate the operations on the internal parts 26 Fig 6 11 5 Loosen the screws L and remove the service panel Fig 6 12 Fig 6 12 For the electrical connection to the boiler use elec tric wires which conform to the current regulations with flexible cord each core having a cross sec tion area not less than 0 75 mm 6 Connect the electrical supply flexible cord coming from the fused spur isolation switch to the power supply terminal block of the boiler Fig 6 13 keeping the same connections for the live brown wire and the neutral blue wire External 3 Afuse or fused plug with same current rating is recommended Do not connect live wires to terminals to Installation which the room thermostat must be con 9 Route the electrical supply flexible cord and nected the external control flexible cord as illustrated 7 Connectthe earth wire yellow green in Fig 6 15 l l l v 9 Lock the flexible cords in place with the flexible Connection of a room thermostat cord clamps The room thermostat must be connected to the 3 terminal block situated next to the control panel o When connecting any type of external control P m san NN the link M in Fig 6 13 must be removed To the external control device To the fused spur To fused
30. e Propane Flue pipe diameter G20 aso S Coaxial 60 100 Max Pa 1000 2800 3600 Twin split pipes e 80 mbar 10 0 28 0 36 0 E a 80 155 Min Pa 160 550 770 RP i mbar 1 6 5 5 7 7 Nominal heat flow rate A D Ignition Pa 600 1200 1300 mbar 6 0 12 0 13 0 Exhaust temperature D 1 mbar approximately equals 10 mm H20 Mass flow rate D Flue gas figures Natural Butane Propane Nominal heat input D G20 G30 G31 CO content m3 h kg h kg h INSTALLATION O content Ma 8307 229 2 25 3 07 2 29 2 25 Mi CO content in 1 28 1 03 1 01 Exhaust temperature D Other specifications Height Width Depth Weight dry kg Water volume in the boiler kg up to 1 bar Butane G30 Propane G31 Electrical Data Voltage 230 Frequency 50 Power consumption 150 Protection degree IPX4D External fuse rating A 3 Internal fuse rating A F1 F2 3 15 AF D Values refer to tests with a 1 m chimney working at the nominal heat input 17 z E 3 x 0 EN GENERAL REQUIREMENTS Biasi UK Ltd support the Benchmark initiative The Benchmark Log Bookis located atthe 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
31. e condensate drain pipe Check the soundness and integrity of the conden sate drain pipe Verify the cleanness and correct filling of the con densate traps Instructing the user Hand over this combined User amp Installation man ual and the Service 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 appliance for 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 33 O E 3 00 MAINTENANCE ES GAS CONVERSION EXE Warnings The commissioning of this boiler and sys tem must o
32. e given to adding protection against condensate to the adjacent structure EZE 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 size than 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 tightness For Ireland IE refer to 1 5 813 2002 EE Air supply The room in which the boiler is installed does not require a purpose provided air vent E ventilation If installed in a cupboard or compartment it is not necessary to provide additional ventilation 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 Condensate drain Ensure that the condensate discharge complies with the national or local regulations in force The condensate pipe must be fitted in accordance with Building Regulations Drainpipe material should be resistant to acid as the condensate is slightly acid with a pH less than 6 5 The boile
33. ecting a fault 10 jud Fig 3 3 m 0 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 6 and call a competent and responsible service engineer LEN TECHNICAL INFORMATION 15 D h w outlet pipe 16 C h flow valve 17 Condensate trap 18 Main circuit drain valve 19 Automatic air purger valve 20 Pump 21 Pump vent plug 22 Modulation gas valve 23 D h w temperature probe NTC 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 LC MP e 30 Combustion chamber i o MU n 31 Primary heat exchanger eodd UL LLL LER TIS 32 Fan o TP 33 Air switch pressure test points 34 Flue temperature probe NTC 35 Air pressure switch 36 Condensing heat exchanger 37 Safety thermostat 38 D h w flow switch 39 C h pressure relief valve 40 Modulation operator 41 Gas valve outlet pressure test point 42 Gas valve inlet pressure test point 43 D h w heat exchanger 44 C h expansion tank O E 3 m x 00 22 21 20 19 45 By pass valve Fig 4 1 46 Venturi device 11 Condensate drain pipe 47 Domestic water circuit filter 12 C h return valve 48 D h w flow limiter 13 Domestic cold water inlet valve 49 Flue outlet pipe 14 Gas inlet valve 50 Air intake pipe 11 Technical information EEN Main diagram 49
34. ely flushed through This procedure must be repeated twice more During this operation we highly recommend the use ofa c h flushing detergent in 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 Condensate pipe and traps The full length of the condensate pipe should be check for leaks The boiler has a built in condensate trap pro vided with a ball valve that prevents the escape of combustion products when the trap is empty Itis however recommended that any other trap in the drain system is correctly filled with water before to run the boiler 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 elapsed 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 e
35. ent of the Ser vice Manual for the necessary adjustment pro cedures Important after the gas pressure checks and any adjustment operations all of the test points must be sealed and replace the adjustment protection cap KAM Adjustment of useful c h output The following procedure allows the output of the boiler for central heating to be adjusted to meet the system requirement Adjusting the useful cen tral output does not prevent the boiler firing at maximum rate for domestic hot water production Refer to Fig 7 11 Fig 7 12 and Fig 7 13 de pending on the gas used and determine the cor rect burner pressure appertaining to the output required for the central heating requirement 1 Remove the front panel of the case 2 Open the gas valve outlet pressure test point 41 Fig 7 4 and connect the gauge 3 Rotate the knob 9 as in Fig 7 6 4 Turn the boiler ON positioning the function se lector 8 as indicated in Fig 7 6 and ensure that the timer selector switch and room thermostat if fitted are set to heat demand 10 We us Fig 7 6 5 Keep pressed the reset button 7 for about 10 seconds until the lock out signal lamp 6 blinks 6 The lamps 10 should give the indication as in Fig 7 7 If not press the reset button 7 repeatedly to ob tain it Q O Where O Lamp OFF DOM uwa Fig 7 7 7 Keep pressed the reset button 7 for about 5 seconds The boiler runs in C h mode and the lamp 6
36. es until the lamps 10 give the indication as in Fig 8 4 gas type mode 9 O Where 1 00 1 Fig 8 4 At this step itis possible to visualize the current set ting by keeping the reset button 7 pressed for more than 5 seconds The lamps 10 will flash a number of times corresponding to the setting of the knob 9 in Fig 8 5 O Lamp OFF o Lamp ON Gas conversion Gas type 3 L PG Setting No 4 N NATURAL 1 OOO DIT BA Fig 8 5 Gas supply Position of knob 9 Approx Max current through the modulator device Natural 125 mA gas L PG 165 mA Fig 8 6 13 To change the setting turn the knob 9 on a posi tion corresponding to the gas used as shown in Fig 8 5 By turning the knob 9 the lock out signal lamp 6 blinks quickly 2 per seconds indicat ing that the setting has changed and must be memorised 14 To memorize the setting keep pressed the reset button 7 for about 5 seconds until the lamps 10 briefly blinks simultaneously 15 Open the gas cock 14 in Fig 8 7 Open position Fig 8 7 16 To reset the boiler to the normal operation turn it ON by the function selector 8 on the desired operation and checking the ignition pressure and that the burner lights up uniformly In any case the boiler automatically resets to its nor mal operation after 10 minutes Factory setting Natural gas as illustrated 17 Calibrate the gas valve accordin
37. g ranges 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 17 appears in the display and then set the mode se lector switch A to the AUTO position Setting example shown in Fig 2 18 forced ON state for 4 hours C1 AUTO TIMER 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 Fig 2 18 EWA USEFUL ADVICE EM Central heating For reasonably economical service install a room thermostat 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 Ifthe 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 FEN Frost protection This appliance is provided with a built in anti freeze system that operates the boiler w
38. g to the in structions given in the service manual section Modulating gas valve Adjustment 18 Setthe correct gas pressure for central heating output required see section 7 9 in this manual 19 Stick on the inside of the left hand side panel adjacent to the data badge the self adhesive label included with the conversion kit indicat ing the type of gas and the gas pressures to which the appliance has been set Replace the adjustment protection cap 20 Replace the front panels of the case 35 MAINTENANCE MAINTENANCE EM MAINTENANCE EXI Warnings 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 EEJ Dismantling the external panels Front panel 1 Loosen the three screws A Fig 9 1 2 Lift and remove the panel Air Flue exhaust Sampling points Fig 9 1 Side panels 36
39. he 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 J Remember to release the auto air purge before filling the boiler See the instructions to identify the location of this device Do not remove the cap of the pressure test points of the air switch top left side of the boiler Y You are strongly advised to flush out the system both cold and hot in order to remove system and installation debris Y 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 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 V If the boiler is fitted with a digital pro grammer when setting the times for auto matic operation remember that for every ON timethere 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 timed set tings Some products incorporate an anti cycl ing time delay It is normal when first swi
40. hen the temperature is below 5 C Therefore when the boiler is not lit and used in cold weather with consequent risk of freezing do not switch off the boiler at the fused spur isola tion switch or close the gas inlet cock EEN condensate drain The condensate drain must not be modified or blocked Blockage of the condensate drain caused by de bris or freezing can cause automatic shutdown of the boiler Iffreezing is suspected and the pipe run is access ible an attempt may be made to free the obstruc tion by pouring hot water over the exposed pipe an cleaning any blockage from the end of the pipe If this fails to remedy the problem the assist ance of a CORGI registered installer or in IE a com petent person should be sought EEI 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 filling up of the central heating circuit bleeding of airfrom the central heating system general check of the appliance s operation EN External cle
41. ick in one or other of the boxes TIME amp TEMPERATURE CONTROL TO HEATING ROOM T STAT amp PROGRAMMER TIMER PROGRAMMABLE ROOMSTAT TIME amp TEMPERATURE CONTROL TO HOT WATER CYLINDER T STAT amp PROGRAMMER TIMER COMBI BOILER HEATING ZONE VALVES FITTED NOT REQUIRED HOT WATER ZONE VALVES FITTED NOT REQUIRED THERMOSTATIC RADIATOR VALVES FITTED AUTOMATIC BYPASS TO SYSTEM FITTED NOT REQUIRED FOR ALL BOILERS CONFIRM THE FOLLOWING THE SYSTEM HAS BEEN FLUSHED IN ACCORDANCE WITH THE BOILER MANUFACTURER S INSTRUCTIONS THE SYSTEM CLEANER USED THE INHIBITOR USED FOR THE CENTRAL HEATING MODE MEASURE amp RECORD GAS RATE m3 hr ff 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 GAS RATE mS hr f 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 FO
42. idered Pluming may easily occur at the terminal Where possible terminal position which could cause a nuisance should be avoided General requirements The minimum acceptable spacing from the ter minalto obstructions and ventilation openings are specified in Fig 5 1 Terminal position mm A Directly below a window or other opening 300 B Below gutters soil pipes or drain pipes 75 C Below eaves 0 cece eee eee 200 D Below balconies s esses 600 E Belowcarportroo0f NO F From vertical drain pipes and soil pipes 150 G From internal corners 450 H From external corners 300 I Above ground or balcony level 300 J From a surface facing a terminal 600 K From a terminal facing a terminal 1 200 L From an opening in the car port e g door window into dwelling NO M Vertically from a terminal in the same wall 1500 N Horizontally from a terminal in the same wall 300 O Above the roof pitch with roof slope less than or equal to 30 350 Above the roof pitch with roof slope more than 30 cece eee eee eee 600 P Fromwallface aaa ken Ka KE A Kn Ka aa a 600 Q From above or to side of an opening 300 Wherever practicable to do so the flue should be ex tended beyond the perimeter of the balcony Qonsideration should b
43. ing boiler 2 4 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 6 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 6 Adjustment 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 5 to 15 C Between 5 and 45 C Lower than 5 C Fig 2 7 Instructions for use 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 2 will allow you to check that the set tem perature is obtained PJ D h w temperature The temperature of the d h w leaving the boiler can be v
44. is switched OFF The lamps 10 give the indication as in Fig 7 8 O O e Where Lamp OFF Flashing 1 11 111 ZC lamp alone or simulta neously with an other lamp Fig 7 8 8 Rotate the knob 9 in Fig 7 6 to obtain the pres sure to the burner to meet with the central heat ing system requirements Refer to the diagrams shown in Fig 7 11 Fig 7 12 or Fig 7 13 By rotating clockwise the pressure increases 31 E 3 x 0 Commissioning 9 Make a note of the position of the knob 9 and kW Natural G20 recorded this in Fig 7 9 below with an 33 10 Turn the boiler OFF and ON positioning the 31 ae pos p T SIE function selector 8 as indicated in Fig 7 9 10 9 25 23 21 19 17 da 15 6 13 11 DMM o 123 45 6 7 8 9 1011 12 13 Z O E 3 E E 00 lt Fig 7 9 96 24S Ny mss 11 Keep pressed the reset button 7 for about 1O m M96 28SM seconds until the lock out signal lamp 6 Fig 7 11 Blinks kW Butane G30 Note during the adjustment the boiler doesn t op ES pios so LL er TT EE 12 Press the reset button 7 repeatedly 2 times 28 until the lamps 10 give the indication as in 26 Fig 7 10 useful c h output adjustment 24 mode 59 20 O0 Where Lamp OFF 18 DOMO mov E 12 ZELLE ELT Fig 7 10 10 5 7 9 11 13 15 17 19 21 23 25 27 29 13 Set the knob 9 on the position corresponding Ma IVI96 24SM to the
45. 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 spur isolation switch Its installation permits a complete switch ing off in the conditions of the overvoltage cat egory Ill Alternatively it can be used a 3A fused three pin plug and unswitched shuttered socket outlet both complying with BS 1363 The point of connection to the electricity supply must be readily accessible and adjacent to the appliance except were the appliance is installed in a bathroom this must then be sited outside the bathroom 21 Z O E 3 E E 00 Z Z O E 3 E E 00 lt LE INSTALLATION AMA 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 and the condensate drain must be connected to a suitable drain or discharge in a safe manner The electrical
46. lue outlet pipe y 80 mm twin kit C air intake pipe 80 mm twin kit Fig 6 2 all dimensions in mm DEB Joints Functions Gas c h return c h flow D c w inlet D h w outlet Pipe sizes o d 25 plastic Pressure relief valve Condensate drain Tab 6 1 sizes in mm o d EY Mounting the boiler 1 Take the protective caps off the boiler pipe work 2 Thoroughly clean the connections 3 Mount the boiler on its bracket 4 Fixthec h valves A and gas cock B 347 to the boiler using the gaskets Fig 6 3 5 Fix the y 22 mm pipes C c h circuit to the c h valves A and the 22 mm pipe D gas to the cock B using the 34 gaskets 6 Repeatthe above procedure for the d c w inlet utilising the 2 cold water inlet valve E the 15 mm copper tail F with its connection nut and two 2 gaskets 7 Fixthe o 15 mm copper tail G with the Ye con nection nut and a Y gasket C Eye D gt es z QC Y A B o am A C Fig 6 3 8 Connect the pipe H Fig 6 4 from the pres sure relief valve to the safety discharge pipe work 9 Fitthe condensate drain 11 Fig 6 4 in the air brake connected to the drainage pipework See also section 5 7 in this manual 23 INSTALLATION Z O E 3 E E 00 lt Installation Fig 6 4 Fitting the flue system Refer to the assembly instructions contained with in the chosen flue kit packaging for the co
47. nly be undertaken by a pro fessionally qualified person in accordance with the requirements of the Gas Safety In stallation and Use Regulations and be ap proved by C O R G Components used to adapt itto the type of gas available must be ine parts only EEJ Procedures 1 Check that the gas cock 14 in Fig 8 1 fitted under the boiler is turned off and the appliance is switched off at the mains isolating spur 14 Closed position Fig 8 1 2 Remove the front panel 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 11 See section gnition and detection electrodes in the service manualfor detailed in structions 5 Carryoutthe conversion for the type of gas re placing the burner injectors correctly 6 Re assemble the burner the front panel ofthe combustion chamber and the lid of the sealed chamber 7 Switch on the appliance at the mains isolating spur 8 Turnthe boiler OFF positioning the function se lector 8 as indicated in Fig 8 2 34 Fig 8 2 9 Disconnect the C h temperature probe NTC 25 in Fig 8 3 Fig 8 3 10 Keep pressed the reset button 7 for about 10 seconds until the lock out signal lamp 6 blinks 11 Connectthe C h temperature probe NTC 25 in Fig 8 3 12 Press the reset button 7 repeatedly 4 tim
48. output G20 Maximum kW 28 3 BTU h 96 488 kW 12 1 BTU h 41 284 kW 30 7 BTU h 104 602 kW 13 2 BTU h 44 965 Useful output G30 G31 Maximum kW 27 4 BTU h 93 599 kW 12 1 BTU h 41 284 kW 30 7 BTU h 104 602 kW 12 9 BTU h 44 016 Minimum Minimum Maximum condensing Minimum condensing Minimum Maximum condensing Minimum condensing Central heating Maximum flow temp Minimum flow temp Minimum return temp Maximum pressure Minimum pressure Available head in 1000 l h Seasonal efficiency G20 B Seasonal efficiency G30 G31 B Domestic hot water Maximum temperature C Minimum temperature C kPa bar kPa bar Maximum pressure Minimum pressure Flow rate minimum 30 rise O 35 rise O 40 rise C Gas supply pressures Gas Natural Butane Propane G20 G30 G31 Norm Pa 2 000 2 900 3 700 mbar 20 29 37 Max Pa 2 500 3 500 4 500 mbar 25 35 45 Min Pa 1700 2 000 2 500 mbar 17 20 25 1 mbar approximately equals 10 mm H20 min min min l min A referred to the net calorific value at 15 C and 1013 25 mbar G 20 34 02 MJ m G 30 45 6 MJ kg G 31 46 4 MJ kg B The value is used in the UK Government s Standard Assessment Procedure SAP for energy rating of dwellings The test data from which it has been calculated have been certified by a notified body O Values subject to tolerance 16 Technical information Gas pressures at the burner Flue design Gas Natural Butan
49. pproved 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 During the operation it is quite normal that the boiler produces a white plume of condensation vapour from the flue terminal This is due to the high efficiency of the ap pliance and may be particularly evident with low outdoor temperatures Safe handling of appliance When handling or lifting always use safe tech niques keep your back straight bend your knees don t twist move your feet avoid bending forwards and sideways and keep the load as close to your body as possible Where possible transport the boiler using a sack truck or other suitable trolley Always grip the boiler firmly and before lifting feel where the weight is concentrated to establish the centre of gravity repositioning yourself as necess ary Safe handling of substances Biasi products are manufactured in accordance with ISO 9000 and do not and will not contain any hazardous materials or s
50. r 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 20 The by pass is calibrated to assure a minimum flow of 500 600 Its hr through the main heat ex changer If you 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 Refer to 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
51. r a co 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 2 7 metres for M96 24SM and M96 28SM Elbows 45 amp 90 Fig 6 6C Co axial 60 100mm Elbow kits enable the 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 5 m 90 reduce length by 1 m Installation Min 0 3 m Max 2 7m 60 100 90 1 D 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 discharges the exhaust gasses Consequently it is possible to extend the flue system to a greater distance than that pro vided by the standard 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 1 65 m respectively N B The air intake and the flue outlet must not terminate on opposite sides
52. r includes atrap 17 on page 11 that pre vents the combustion products entering the drain however an additional trap with a seal of at least 75 mm and an air break between thetraps is required Fig 5 2 The length of the condensate pipe should be kept at minimum To avoid condensate being trapped thedrainpipe should be run with a fall of atleast 2 5 45 mm m away from the boiler the number of bends and joints should be kept at minimum 19 O E 3 EN x 0 Z O E 3 E E 00 lt General requirements the drainpipe should be adequately fixed to pevent pipe sagging If a part of the drainpipe runs externally this part should be kept as short as possible and protected to reduce the risk of freezing Condensate drain Fig 5 2 EXHI 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 Copper tubing 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 ai
53. rrect as sembly and installation In general it has to be taken in consideration that the horizontal sections of the flue pipe must have an horizontal sloping not less than 1 5 deg 25 mm per metre towards the boiler In the standard horizontal flue kit Fig 6 6A the flue pipe is angled within the air duct therefore the air duct must be horizontally installed If one or more extensions have to be used they must be adequately supported so that there is no sag in the flue pipe and a minimum fall of 1 5 deg 25 mm per metre over the whole length towards the boiler is ensured Before fitting the flue system ensure that the flue gasket shown in Fig 6 5 given with the boiler is fitted to the boiler NAN Fig 6 5 24 CEN 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 Minimum length required is 0 3 m Maxi mum equivalent length of 2 7 metres for M96 24SM and M96 28SM can be achieved utilising extensions This flue system can only be used to discharge horizontally it is not designed to enable termination in the vertical plane Vertical kit with 90 elbow Fig 6 6B Co axial 60 100 mm Supplied with a straight flanged adapte
54. s manual Bleed any air present in the radiators if necessary If the pressure on the temperature and pres sure gauge 4 on page 2 has gone down itis necessary to top up the appliance with water again so as to raise the pressure to an adequate level as 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 If water comes out of the pressure relief valve Check on the temperature and pressure gauge 4 on page 2 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 10 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 11 on page 7 and call an Authorised Ser vice Centre Engineer If the left appliance operation light 10 Fig 3 3 flashes very quickly the boiler is det
55. spur L E N isolation switch isolation switch 7 Fior Power supply terminal block CLIO T SUSLIS S Oy M 2 1 Z O E 3 E E 00 lt mc 2 4 AO tera Sat Fig 6 15 Qr a Fig 6 13 6 10 External frost protection 8 Connect the room thermostat between ter 10 Connect the frost thermostat between ter minals 1 and 3 as shown in Fig 6 14 minals 1 and 2 as shown in Fig 6 16 Do not connect live wires to terminals to Do not connect live wires to terminals to which the room thermostat must be con which the room thermostat must be con nected nected Rooi therinostat Power supply Frost thermostat Room thermostat terminal block LG N A LJ SUS AY conc Zi Zi 2j A A Power supply terminal block External controls 1 terminal block External controls y i terminal block Fig 6 16 E z e Q lt y Fl 92 e 9 d J e Go 9 8 9 8 Fig 6 14 27 O 3 E E 00 Z COMMISSIONING WARNING The commissioning of this boiler and system must only be undertaken by a professionally qualified person in accordance with the
56. stem is 80 C Initial temperature when filling up the system is 10 C For systems 24 Kw and 28 Kw with volumes greater than 132 an additional expansion vessel must be provided 13 O E 3 0 Technical information EEJ Technical data Central heating mod M96 24SM rea Heat input 4 Minimum flow temp Minimum return temp Nominal kW 25 0 P BTU h 85 295 Maximum pressure Minimum kW 11 0 BTU h 37 530 Minimum pressure Available head n 1000 Vh Maximum kW 24 6 BTU h 83 973 Minimum kW 10 2 BTU h 34 936 Seasonal efficiency G30 G31 B Seasonal efficiency G20 B Maximum condensing kW 26 6 BTU h 90 754 Minimum condensing kW 11 1 Domestic hot water BTU h 37 871 Maximum temperature G Minimum temperature C compr t Giao 33 Maximum pressure kPa Maximum kW 23 7 bar BTU h 80 894 INSTALLATION Minimum pressure kPa Minimum kW 10 2 bar BTU h 34 936 Maximum condensing kW 26 6 BTU h 90 754 Flow rate minimum min o C Minimum condensing kW 10 8 30 rise l min BTU h 36 997 35 rise C l min 40 rise O l min Gas supply pressures Gas Natural Butane Propane G20 G30 G31 Norm Pa 2 000 2 900 3 700 mbar 20 29 37 Max Pa 2 500 3 500 4 500 mbar 25 35 45 Min Pa 1 700 2 000 2 500 mbar 17 20 25 1 mbar approximately equals 10 mm H20 A referred to the net calorific value at 15 C and 1013 25 mbar G 20 34 02 MJ m G 30 45 6 MJ kg G 31 46
57. sures 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 5 or 4 6 gas rate accordingly with the model of boiler installed 7 Switch off the boiler 8 Disconnect the gas modulator coil by remov ing the electrical connector A Fig 7 4 Fig 7 4 9 Switch on the boiler 10 Check the minimum gas pressure and com pare the value on the gauge with the value indi 30 cated in the sections 4 5 or 4 6 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 Switch on the boiler 13 Check that the boiler lights up uniformly If not refer to section Ignition gas pressure ad justment ofthe Service Manualfor the necess ary adjustment procedures 14 Switch off the boiler turn off the hot water tap s and disconnect the pressure gauge If the maximum and minimum gas pressures measured above are notin accordance with the technical data sections 4 5 or 4 6 then adjust ment 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 pressures are adjusted then the ignition gas pressure must be checked and adjusted if necessary Important after the gas pressure checks and any adjustment
58. tch 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 aboutthe installation of this product you can contact our Technical Helpline on tel 0121 506 1350 TABLE OF CONTENTS 1 Appliance description 2 2 Instructions foruse 4 2 1 Warnings ALICE CR 4 Tak SING asa tara waga wa wa adepta e 2 2 Refilling procedure 4 1 2 Control panel 2 283 lgnition 5 1 3 Isolation valves 2 SE aka M Edd ved dura E 5 D h w temperature 1 4 Technical data 2 56 Extinguishing sss 6 1 5 Operation lights 3 27 Builtin time switch 7 3 Usefuladvice 9 6 Installation 22 3 1 Central heating 9 6 1 Warnings waa 22 ba 3 2 Frost protection 9 62 Precautions for installation 22 Ko 3 3 Condensate drain 9 6 3
59. ted Kingdom GB Ireland IE This appliance conforms with the EEC directive 90 396 and consequently it hasthe rightto make use of thee 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 builtto 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 Y The installation must be carried out by a qualified person who will be responsible for observing the current Regulations Installing the boiler Do not forget to remove the transit caps and plugs from the boiler connections these are fitted to every boiler Y 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 put a dust sheet over the top of the boiler until you are ready to make the flue connection Because every boiler is fired and tested live at t
60. tion 4 5 or 4 6 7 Lockout reset button of this manual 8 Function selector and c h temp control knob 9 D h w temperature control knob Fig 1 3 Appliance description EE Operation lights Three lights 10 in Fig 1 3 give detailed indication regarding the operation of the boiler Thefollowing table gives the relationship between each of the possible light combinations and their meaning LU u m O O A short pulse every 4 seconds stand by condition Function selector in Q position Anti freeze system active 1 second pulse every 2 seconds normally operating boiler Function selector in amp amp or position x vl CTS els x 2 x vit x O 1A C h operation vl LaS 4 slz Qe vi x 71N D h w operation Vly ry s r z x vl LS XN 7 O e Frost protect operation O O S D h w operation Excessive temperature on primary circuit XN vl ans vi IN PES x Faulty c h temperature probe NTC x vl vn Faulty d h w temperature probe NTC 000 0 vl vy PES x x Faulty flue temperature probe NTC x vt ry pd Faulty primary circuit no water or absence of flow pd Vly EY x r N vl LPS N 4 e O 0 Faulty air pressure switch s vi P N pd vi ryN pd
61. ubstances 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 fibres 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 Appliance category Il2434 Gas G20 20 mbar G30 29 mbar G31 37 mbar Country of destination Uni
62. very 4 seconds 2 Turn the function selector 8 as in Fig 7 3 The appliance operation light 10 will flash every 2 seconds Fig 7 3 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 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 29 O E 3 00 O E 3 E E 00 Z Commissioning 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 41 Fig 7 4 on the Outlet Pressure 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 If external controls are fitted e g Timeclock room ther mostat ensure they call for heat Switch on the boiler and open at least one hot water tap fully Check the maximum gas pressure and com pare the value on the gauge with the value indi cated in the sections 4 5 or 4 6 gas pres
63. x Lack of burner ignition no ignition signal from the full segence ignition device x vl mys vi ants XN x Safety thermostat lock out Fa vi YN Flue temperature probe NTC lock out 0 0 O O Lack of power supply or fauly electr control p c b Vly e LAS vi e O 2 N M LAS Lamp OFF Lamp ON Flashing lamp alone or simultaneously with an other lamp Flashing lamp alternate with another lamp EN INSTRUCTIONS FOR USE EXB 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 overto the User for fu ture reference by other visiting Engineers Also included is the Service Interval Record card that should be completed by the Ser vice Engineer following the annual 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 tests 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

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