Baxi Duo-tec Combi 24 HE A Page 1 Installation And Servicing Instructions Download

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Platinum Combi HE

Range

Gas Fired Wall Mounted Condensing

Combination Boiler

Installation & Servicing Instructions

These instructions include the Benchmark Commissioning Checklist

and should be left with the user for safe keeping.

Summary of Contents for Duo-tec Combi 24 HE A

Page 1: ...atinum Combi HE A Range Gas Fired Wall Mounted Condensing Combination Boiler Installation Servicing Instructions These instructions include the Benchmark Commissioning Checklist and should be left wit...

Page 2: ...he appliance is being installed in a dwelling or some related structure The flowchart opposite gives guidance for installers on the process necessary to ensure compliance with Building Regulations Bax...

Page 3: ...levant LABC You must ensure that the certificate number issued by the Gas Safe Register is written onto the Benchmark Checklist Scheme Members only Call Gas Safe Register on 0800 408 5577 or log onto...

Page 4: ...tice apply Standard Scope I S 813 Domestic Gas Installations The following standards give valuable additional information BS 5546 Installation of hot water supplies for domestic purposes BS 5449 Force...

Page 5: ...clear and unobstructed If possible avoid steps wet or slippery surfaces unlit areas etc and take special care on ladders into lofts Technique When handling or lifting always use safe techniques keep...

Page 6: ...d Fixings 11 6 0 System Details 12 7 0 Site Requirements 15 8 0 Flue Options 19 9 0 Plume Displacement 24 10 0 Installation 28 11 0 Commissioning 33 12 0 Completion 36 13 0 Servicing 37 14 0 Changing...

Page 7: ...ter 6 The boiler data badge gives details of the model serial number and Gas Council number and is situated on the inner door panel It is visible when the case front panel is removed Fig 1 7 The boile...

Page 8: ...trode 14 Spark Electrode 15 Primary Heat Exchanger 16 Fan Assembly 17 On Off Reset Selector Switch 18 Central Heating Temperature Control 19 Hot Water Temperature Control 20 Venturi 21 Air Gas Collect...

Page 9: ...will not operate and the integral timer will require resetting once the selector switch is set to either Position i or Position ii 3 3 Frost Protection Mode 1 The frost protection mode is integral to...

Page 10: ...flow rate NOx Class 5 Clearances Above Casing 200 mm Min Below Casing 200 mm Min Front 450 mm Min For Servicing Front 5 mm Min In Operation L H Side 5 mm Min R H Side 5 mm Min In Operation Heat Input...

Page 11: ...m for 80 125mm flue systems F 145mm G 131mm H 180mm J 270mm Domestic Hot Water Outlet 15mm Cold Water Inlet 15mm Heating Return 22mm Heating Flow 22mm Pressure Relief Valve 15mm Gas Inlet 22mm 65 mm 6...

Page 12: ...of Water in Domestic Hot Water Central Heating Systems and the treatment manufacturers instructions 2 Treatment must involve the use of a proprietary cleanser such as Sentinel X300 or X400 or Fernox...

Page 13: ...5 bar The vessel is suitable for correct operation for system capacities up to 125 litres For greater system capacities an additional expansion vessel must be fitted For GB refer to BS 7074 Pt 1 For...

Page 14: ...atment device already fitted to the wholesome water supply connected to the boiler domestic hot water DHW inlet supply then a suitable expansion device may be required 5 The boiler s maximum working m...

Page 15: ...ant requirements In GB this is the current I E E Wiring Regulations and Building Regulations In IE reference should be made to the current edition of I S 813 Domestic Gas Installations and the current...

Page 16: ...GB this is the current I E E Wiring Regulations In IE reference should be made to the current edition of ETCI rules 2 The mains supply is 230V 50Hz fused at 3A NOTE The method of connection to the ele...

Page 17: ...ation the entire condensate discharge pipe should be treated as an external run 9 In all cases discharge pipe must be installed to aid disposal of the condensate To reduce the risk of condensate being...

Page 18: ...oundary may not be less than 300mm in accordance with the diagram below Terminal Position with Minimum Distance Fig 12 mm Aa Directly below an opening air brick opening windows etc 300 Ba Above an ope...

Page 19: ...end 0 5 metres 93 bend 1 0 metres The elbow supplied with the standard horizontal telescopic flue kit is not included in any equivalent length calculations NOTE Flue length is measured from point X to...

Page 20: ...m 0 5m 1 0m AIR DUCT No of fittings pipes Sub total Equivalent Length Value Equivalent Length Air Duct 6 5m 1m extension 135 bend 91 5 bend 1m 0 25m 0 5m 5 2 2 5 0m 0 5m 1 0m FLUE DUCT No of fittings...

Page 21: ...80mm diameter E Flue Extension pair 1000mm 5111087 F Flue Bend pair 90 5111072 G Flue Bend 2 pair 135 5111086 J Vertical Flue Boiler Adaptor Kit 5111079 H Vertical Flue Adaptor 5111084 W Pipe Support...

Page 22: ...ed in the kit One marked 23 and one marked 27 these can be discarded The third restrictor MUST be positioned as shown in the diagrams below 3 Take one of the gaskets supplied in the kit and place on t...

Page 23: ...If the boiler is not fitted immediately after the flue system temporary precautions must be taken to prevent rain entry into the room of installation Any precautionary measures must be removed prior...

Page 24: ...crease with the addition of extensions the length of either or both the 60 100 concentric and 60 exhaust 5 Standard concentric flue extension kits may be added between the boiler elbow and the termina...

Page 25: ...60 exhaust and any extensions or additional bends Example 1 Not Permissible If for instance a concentric length of 5 metres was required and the 60 exhaust needed to be 6 metres the graph shows that t...

Page 26: ...to the boiler at an angle of at least 1 5 and that the external air inlet is to the bottom 8 Use suitable brackets to support the concentric assembly and any extensions and make good inside and outsid...

Page 27: ...extension at 30mm as shown in two positions directly opposite each other Fig 27 20 Using a suitable bit e g 2mm drill through the extension and outlet Secure using two of the screws supplied 21 The r...

Page 28: ...position of the gas and water pipes Remove the template 6 Cut the hole for the flue minimum diameter 116mm 7 Drill the wall as previously marked to accept the wall plugs supplied Secure the wall plate...

Page 29: ...iler Make up as much of the pipework as is practical including the discharge pipe supplied 3 The pipework must be at least 15mm diameter and run continuously downwards to a discharge point outside the...

Page 30: ...he flue elbow is angled at 93 degrees to ensure a fall back to the boiler 4 Measure the distance from the outside wall face to the elbow This dimension will be known as X Fig 40 5 If the distance from...

Page 31: ...rect boiler operation and prevent water entering the flue 13 Make good between the wall and air duct outside the building 14 Fit the flue trim if required and if necessary fit a terminal guard see Sec...

Page 32: ...The 230V supply at terminal 2 must be connected to the thermostat The switched output from the thermostat must be connected to terminal 1 Fig 50 If the room thermostat being used incorporates an anti...

Page 33: ...Section 6 2 and the flushing agent manufacturers instructions 8 Pressurise the system to 1 5 bar then close and disconnect the filling loop 9 Turn the gas supply on and purge according to in GB BS 689...

Page 34: ...tic hot water will operate on demand To set the time of day Turn the timer outer bezel clockwise to align the pointer with the correct time to the nearest 15 minutes ensuring that A M P M is considere...

Page 35: ...wice and back fully anticlockwise Fig 55 6 The display will now alternate between SF and the current boiler temperature and both green LEDs will flash Figs 56 57 7 Turn CH temperature control knob ful...

Page 36: ...e relevant to the appliance and installation These details will be required in the event of any warranty work The publication must be handed to the user for safe keeping and each subsequent regular se...

Page 37: ...must be performed see below Carefully check items such as the burner injector and heat exchanger for blockage or damage rectifying as necessary Re check the combustion Once satisfactory readings have...

Page 38: ...clean the filter 17 Initially check the cold water inlet tap filter 18 Turn the tap off and draw off from a hot tap Undo the blanking cap and remove the threaded bush Fig 67 19 Extract the filter and...

Page 39: ...ter Fig 69 1 Disconnect the igniter feed plug and the electrode leads noting their positions 2 Undo the screw securing the bracket to the boiler 3 Remove the igniter and transfer the bracket to the ne...

Page 40: ...or is in place and the sensing pipe is connected to the fan 14 4 Venturi Fig 71 1 Remove the collector and fan assembly as described in section 14 3 2 Extract the injector from the venturi 3 Undo the...

Page 41: ...14 2 2 Undo the screws securing the collector to the venturi and the nuts holding the cover to the heat exchanger Draw the collector and cover assembly away 3 Remove the cover insulation piece 4 Fit...

Page 42: ...onnect the electrical plug 2 Unscrew the sensor from it s pocket and reassemble in reverse order The plug will only fit one way 14 11 Safety Thermostat Fig 77 1 Pull the plug off the thermostat 2 Remo...

Page 43: ...he body to the pipe and manifold and draw the pump forwards 3 Undo the screw on the pump wiring cover and remove the cover Using a suitable flat bladed screw driver press the cable securing levers dow...

Page 44: ...e electrical plug from the sensor 3 Connect the plug to the new sensor Carefully fit the new sensor to the hydraulic assembly ensuring it is fully down 14 18 Pressure Relief Valve Fig 85 1 Drain the p...

Page 45: ...nd location stud is offset towards the centre more than the right hand one 7 Reassemble in reverse order 14 20 Diverter Valve Motor Unit Assembly Fig 87 1 To replace the motor unit disconnect the mult...

Page 46: ...5 Reassemble in reverse order ensuring that the temperature controllers are reset to their previous positions 14 22 Selector Switch Fig 90 1 Note the setting of the selector switch knob and carefully...

Page 47: ...ssary 6 Reassemble in reverse order NOTE To assist the boiler to light prior to final setting use a suitable hexagon key to wind out the Gas Air adjustment screw until it is flush with the valve body...

Page 48: ...ax Rate adjustment screw At maximum rate the Max Rate adjustment screw should be turned using a suitable hexagon key until the correct reading is obtained Fig 100 Turning clockwise will reduce the CO2...

Page 49: ...erheat Stat Flame Sensing Electrode Pump Flue Sensor X400 X401 g g b b r r b b b b b br bk g b br g y b br b br br b b b br br br b b br r bk r bk Water Pressure Switch Spark Generator Ignition Electr...

Page 50: ...9647 Gas Valve 40 only 5122286 624 Hall Effect Sensor 5114767 306 Burner 24 5121862 Burner 28 5114697 Burner 33 40 5114698 419 Water Pressure Switch 5114748 400 Plate Heat Exchanger 5114708 415 Pump 2...

Page 51: ...code E133 will be displayed by E1 alternating with 33 E50 is shown as E then 50 E20 E28 E50 indicate faulty components E110 shows overheat of the primary water and E130 overheat of the flue system E11...

Page 52: ...lashing Burner does not stay alights after 5 seconds Error 133 flashing Go to section I Operation sequence successful If the error 110 is still flashing Go to section J Fan runs at correct speed YES Y...

Page 53: ...ts after 5 seconds Error 133 flashing Go to section I Operation sequence successful Turn the selector switch to reset position for 5 seconds If the error 110 is still flashing Go to section J Fan runs...

Page 54: ...nnector terminals 3 4 Replace PCB 2 NO Change pump supply cable YES B CH system pressure less than 0 5 bar Re pressurise system 1 YES Check the tap of the automatic air vent is opened Open the automat...

Page 55: ...ad 2 Electrode connection 3 Spark gap and position YES NO Replace igniter YES H YES 1 Ensure that the Hall Effect Sensor is in position Check the connection between the PCB X400 connector terminals 3...

Page 56: ...ted or faulty i e continuity across thermostat terminals Allow to cool Continuity across thermostat terminals more than 1 5 ohm J L M Is there 230V at Motor 3 way valve Replace motor 3 way valve 1 YES...

Page 57: ...57 19 0 Notes Baxi Heating UK Ltd 2009...

Page 58: ...a d r o c c a n i d e l l a t s n i n e e b s a h n i a r d e t a s n e d n o c e h T ALL INSTALLATIONS O C g n i w o l l o f e h t d r o c e r r e r u t c a f u n a m e h t y b d e r i u q e r f I 2...

Page 59: ...omments Signature SERVICE 9 Date Energy Efficiency Checklist completed Yes No Engineer Name Company Name Telephone Number Comments Signature SERVICE 2 Date Energy Efficiency Checklist completed Yes No...

Page 60: ...in our products which may affect the accuracy of the information contained in this leaflet All goods are sold subject to our standard Conditions of Sale which are available on request BAXI A Trading D...

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