IDEAL LOGIC Combi E 35 Installation And Servicing Download

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Ideal Logic

Combi -

Installation and Servicing

80 NO WATER FLOW LOCKOUT - 1 FILL sysTEM TO 1.0 BAR - 2 BLEED RADIATORs -

3 ChECK RADIATOR VALVEs OpEN - 4 REsET BOILER - 5 CONTACT INsTALLER

Is the Boiler and CH System filled with water and all

isolation and radiator valves open?

YES

Fill and vent the system and open all

isolation valves, reset the boiler

Reset the boiler. Is the Flow/Return Differential

across the Boiler in excess of 30°C?

Check pump connection and check

that the Pump is rotating freely. Is the

Differential now below 20°C?

YES

Check the Flow and Return Thermistors

(Refer to Frame 53)

Check resistance using a suitable multimeter

connected across the thermistor’s terminal pins

At 25

C expect

9,700 - 10,300

Ohms

At 60

C expect

2,400 - 2,600

Ohms

At 85

C expect

1,000 - 1,100

Ohms

Replace the Pump

YES

Check the No Water Flow Thermistor

(Refer to Frame 73).

Check resistance using a suitable multimeter

connected across the thermistor’s terminal pins

At 25

C expect

9,700 - 10,300

Ohms

At 60

C expect

2,400 - 2,600

Ohms

At 85

C expect

1,000 - 1,100

Ohms

Does the boiler now work OK?

81 FAULT 8 - CONTACT INsTALLER (FALsE FLAME LOCKOUT)

Reset the boiler, does Boiler Work OK?

Check routing and integrity of internal boiler

wiring is OK. Check condition of Flame Sense

Electrode and replace if deteriorated.

Separate the flame detection electrode in-line

connector. Is there continuity between the terminals

pins connected to the electrode?

YES

Replace Flame Detection Electrode

YES

Check routing and integrity of internal boiler wiring.

82 LOW WATER pREssURE - 1 FILL sysTEM TO 1.0 BAR -

2 BLEED RADIATORs -

3 CONTACT INsTALLER

Are the Boiler and CH System filled with water and

all isolation and radiator valves open (check pressure

gauge is between 1 to 1.5 bar)?

Fill and vent the system and open all isolation valves

YES

Are connections on water pressure sensor secure?

REsET pROCEDURE

- To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting.

REsET pROCEDURE

- To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting.

YES

Replace water pressure sensor

Re-fit connections

204978-4.indd 58

20/10/2010 14:05:06

Summary of Contents for LOGIC Combi E 35

Page 1: ...be assured conform to the safety and performance specification that we require Do not use reconditioned or copy parts that have not been clearly authorised by Ideal For the very latest copy of literature for specification and maintenance practices visit our website www idealheating com where you can download the relevant information in PDF format October 2010 UIN 204978 A04 ...

Page 2: ...2 Ideal Logic Combi Installation and Servicing ...

Page 3: ...Treatment Addition of Scalemaster Gold 100 Page 13 Frame 6 Boiler Assy Addition of Note Ref to BCC Card Page 14 Frame 7 Unpacking Pack A Contents New item H added Hardware Pack updated Filling Loop contents Page 24 Frame 24 Connecting the Flue to the Boiler Note added ref Side Flue Key no 4 updated ref flue seal Page 28 Frame 29 Connections and Filling Frames condensed into one Water Connections D...

Page 4: ...on PMS Maximum operating pressure of water C13 C33 C53 A room sealed appliance designed for connection via ducts to a horizontal or vertical terminal which admits fresh air to the burner and discharges the products of combustion to the outside through orifices which in this case are concentric The fan is up stream of the combustion chamber I2H An appliance designed for use on 2nd Family gas Group ...

Page 5: ...ibitor 12 Central heating mode Heat input to be calculated For assistance see Technical Helpline on the back page Page Burner operating pressure n a Central heating flow temp measure and record Central heating return temp measure and record For combination boilers only Scale reducer 11 Hot water mode Heat input to be calculated Max operating burner pressure n a Max operating water pressure measure...

Page 6: ...only occurs if pre heat knob is in the ON period When there is a demand for CH the heating system is supplied at the selected temperature of between 45o C and 80o C until DHW is drawn off The full output from the boiler is then directed via the diverter valve to the plate heat exchanger to supply a nominal DHW draw off of 24 9 9 l min at 35 o C temperature rise 30 12 4 l min at 35 o C temperature ...

Page 7: ...ated input not exceeding 70 kW BS 6891 Low pressure installation pipes Health Safety Document No 635 The Electricity at Work Regulations 1989 The manufacturer s notes must NOT be taken in any way as overriding statutory obligations IMPORTANT These appliances are CE certificated for safety and performance It is therefore important that no external control devices e g flue dampers economisers etc ar...

Page 8: ...is exposed to external air 2 It is important that the position of the terminal allows the free passage of air across it at all times Location of boiler The boiler must be installed on a flat and vertical internal wall capable of adequately supporting the weight of the boiler and any ancillary equipment The boiler may be fitted on a combustible wall and insulation between the wall and the boiler is...

Page 9: ...ollowing the guidance provided in the current Gas Industry Unsafe Situation Procedure Terminal The terminal assembly can be adapted to accommodate various wall thicknesses Refer to Frame 10 Air supply It is NOT necessary to have a purpose provided air vent in the room or internal space in which the boiler is installed Neither is it necessary to ventilate a cupboard or compartment in which the boil...

Page 10: ...educed to 5mm This must be obtained with an easily removable panel to enable the consumer to view the system pressure gauge and to provide the 100mm clearance required for servicing space into which the boiler is going to be installed is less than the length of flue required the flue must be fitted from the outside Installation from inside ONLY b If a core boring tool is to be used inside the buil...

Page 11: ...eason an additional vessel must be installed on the return to the boiler Guidance on vessel sizing is given in Table above Notes a The method of filling refilling topping up or flushing sealed primary hot water circuits from the mains via a temporary hose connection is only allowed if acceptable to the local water authority b Antifreeze fluid corrosion and scale inhibitor fluids suitable for use w...

Page 12: ... fired before the system has been thoroughly flushed Domestic Hot water In hard water areas where mains water can exceed 200ppm Total Hardness as defined by BS 7593 2006 Table 2 a scale reducing device should be fitted into the boiler cold supply within the requirements of the local water company The use of artificially softened water however is not permitted Ideal Stelrad Group recommend the use ...

Page 13: ...Gauge 203 Gas Cock 204 Pipe Gas Inlet 205 Gas Valve 206 Pipe Gas Injector 211 Injector Assembly 214 Venturi 215 Fan 217 Burner 218 Gasket Burner 219 Sump Clean Out Cover 223 Flue Manifold 224 Flue Manifold Top 227 Clamp Retaining Flue Turret 228 Hose Condensate Internal 229 Siphon Trap 230 Siphon Trap Cap Seal 231 Condensate Outlet Connection 233 Flue Sensing Nipple 301 Ctrl Box Fixings Hings Spri...

Page 14: ...e HARDWARE PACK CONTENTS Gas Valve Pack 1 Pipe Gas Inlet 2 Washer Gas blue 3 Gas Cock Filling Loop Pack 1 3 8 Top Hat Washer x2 2 Plastic Chain x2 3 3 8 Blanking Cap x1 4 Valve Dbl Check Filling Loop x1 5 3 8 Fibre Washer x2 6 3 8 Blanking Cap Extended x1 7 Valve Filling Loop x1 8 Filling Loop with 3 8 Nuts x1 Return Valve Pack 1 Pipe CH Return 2 Washer CH 3 Valve Return DHW Pack 1 Pipe DHW Outlet...

Page 15: ...age 3 Pull the front panel forward and upwards to remove Pack B Contents Telescopic supplied as standard A Telescopic flue terminal B Flue turret C Rubber Terminal Wall SEal D Screw E Sealing tape isfu8751d D C B A E 1 2 Pack B Contents Non Telescopic optional A Flue terminal B Flue turret C Rubber Terminal Wall Seal D Cutting Aid A D 3G9671 B C 8 unpacking Cont d INSTALLATION ...

Page 16: ...and off frame depth 45mm 10 DETERMINING THE FLUE LENGTH and flue packs required Note Maximum Flue lengths 24 9m horizontal flue 30 8M Horizontal flue 35 6m horizontal flue 24 30 35 7 5M ROOF FLUE 24 30 35 5m PRIMARY AND 17M SECONDARY IS A TYPICAL MAX FLUE LENGTH For alternative details refer to Powered Vertical Instructions 90o Elbow Kit 60 100 Equivalent flue length resistance 1m 45o elbow Kit 60...

Page 17: ... to 6340 mm Pack D 6 off 24 30 35 Up to 7290 mm Up to 7290 mm Pack D 7off 24 30 Up to 8240 mm Up to 8240 mm Pack D 8 off 24 30 Up to 9000 mm Up to 9000 mm Pack D 9 off 24 Logic Combi 35 is capable of 6m flue only Logic Combi 30 is capable of 8m flue only 11 DETERMINING THE FLUE LENGTH and flue packs required cont d 12 FLUE ASSEMBLY Exploded View An optional flue duct extension kit is required for ...

Page 18: ...mportant Ensure that during the cutting operation masonry falling outside of the building does not cause damage or personal injury 1 Cut the flue hole preferably with a 5 core boring tool ensuring that the hole is square to the wall Both wall faces immediately around the cut hole should be flat 2 Drill 2 holes with a 7 5mm 8mm masonry drill and insert the plastic plugs provided for the wall mounti...

Page 19: ...using the extension ducts go to Frame 17 b If the stand off frame is used it is essential to add 45mm to X the measured wall thickness when marking the flue this will allow for the fitted frame 1 Measure and note wall thickness X Refer to Frame 10 2 Add 90mm to dimension X and measuring from the ring cut the outer tube only 3 To ensure the tube is cut square mark the flue all the way around 4 Cut ...

Page 20: ...m to dimension L and set telescopic flue length as indicated in drawing 4 Using a 3 5mm drill bit drill one hole in outer air duct taking care not to pierce plastic inner flue 5 Fix to length using self tappers provided 6 Seal outer air duct using the tape provided nm8945 L 115 Drill hole Adhere sealing tape Measurement to be taken from this point NON TELESCOPIC FLUE Wall thickness of 115mm to 440...

Page 21: ...e Use a maximum of 9m extended flue ONLY 24 Use a maximum of 8m extended flue ONLY 30 If the telescopic flue terminal is used it is not always necessary to cut an extension pack 1 Measure the total flue length L from the centre of the boiler outlet to the outside wall 2 Subtract 65mm from this dimension 3 Subtract 950mm for each D pack to be used 4 If the remainder Y is 300mm 500mm this can be tak...

Page 22: ...not be reduced in any part of its length The boiler includes as standard a 75mm condensate trap The condensate trap also includes a siphon to reduce the possibility of freezing in the drain outlet If external condensate pipe run is greater than 3m then pipe should be 32mm nominal diameter Consideration should be given to insulating external condensate pipe runs 203 47 149 Condensate Drain 21 Mount...

Page 23: ...d vent stack Make connection to SVP using a solvent welded saddle BOILER External wall Ground Level Open end of pipe direct into gulley below grating but above water level DRAIN cla7775 3 Termination to soak away 4 termination to drain gully BOILER External wall Ground Level Termination to Soak away cla7774 minimum 500mm BOILER esp8882 BOILER cla7771a DRAIN Ground Level Open end of pipe direct int...

Page 24: ...inst outside wall face 4 Ensure rubber flue seal is present fully engaged into plastic top flue manifold then locate the flue turret into the flue manifold and secure by applying downward pressure 5 Engage the clamp in its slide mechanism and push it horizontally backwards 6 Locate BOTH plastic pegs BEFORE the front retaining clip is fully located Note Flues over 1 metre long It is recommended tha...

Page 25: ...s is achieved by using either Flat roof weather collar or Universal weather collar Accessories Flue Duct Extension Kits are available for flue lengths extending beyond 1m These packs contain 1m extension ducts and may be cut to the desired length If the offset vertical option is used an elbow Kit is required For a full accessories list refer to page 7 Optional Extras and Frame 26 Flue Arrangement ...

Page 26: ...inal positions where this could cause a nuisance should be avoided Minimum dimensions are shown below Terminal Position Minimum Dimension Directly below an opening air brick windows etc 300 mm Below plastic painted gutters 300 mm Painted surface 300 mm Below eaves or balcony 500 mm Below velux windows 2000mm Above or side of velux windows 600mm rf8392 Note The equivalent flue length resistance of ...

Page 27: ...d separately in accordance with the instructions provided with the vertical connector kit 3 Secure the vertical connector by applying downward pressure on the connector 4 Engage the clamp in its slide mechanism and push it horizontally backwards locating on BOTH plastic pegs BEFORE the front retaining clip is fully located as shown in Frame 24 5 Push fit extension duct if required supplied separat...

Page 28: ...ng the boiler to heating loads in excess of 60 000 Btu h connecting flow and return heating systems pipework must be sized in 28mm diameter at the point of pipe connection to the boiler tails use 22mm x 28mm pipe adaptors as appropriate GAS CONNECTION IMPORTANT The gas service cock is sealed with a non metallic blue fibre washer which must not be overheated when making capillary connections Refer ...

Page 29: ...anel note grommets are blind and will require puncturing and secure using clamps and screws provided in hardware pack 5 Pull off rubber terminal block cover 6 Connect wires to terminal block as shown below 7 Re assemble in reverse order continued 30 electrical connections Wiring should be 3 core PVC insulated cable not less than 0 75mm2 24 x 0 2mm and to BS 6500 Table 16 For IE reference should be...

Page 30: ...help messages Also OpenTherm Control for gas consumption saving Weather Compensation Kit Allows outside temperature sensing 32 internal wiring cont d 1 Room thermostat with internal boiler timer or 2 programmable room thermostat 1 Remove link wire between room stat timer terminals 2 Connect room stat across terminals as shown in diagram A 3 If room stat has a neutral connection connect this to ter...

Page 31: ...e boiler 2 Remove the front panel Refer to Frame 43 3 Swing the control box down into the service position Refer to Frame 49 4 Remove the live neutral and earth wires from the terminal block 5 Loosen the cable clamp and withdraw the mains cable 6 Route replacement cable back through the cable clamp and grommet and re tighten to provide cord anchorage 7 Connect the live neutral and earth wires to t...

Page 32: ...w Thermistor Return Thermistor Flame Sensor Electrode Spark Electrode Spark Generator PCB Gas Valve Divertor Valve Pump Chassis Earth Internal Timer Low Voltage Connection Internal Timer High Voltage Connection Service Connector Inline connector Fused at 4AT blue black brown red pink yellow white yellow green grey orange violet r r r r v v v v g g r bk b y g bk b p bk bk bk bk w y p br y bk or b b...

Page 33: ...n the gas type defined on the appliance data plate No measurement of the combustion is necessary Do not adjust the air gas ratio valve Having checked That the boiler has been installed in accordance with these instructions The integrity of the flue system and the flue seals as described in the Flue Installation section Proceed to put the boiler into operation as follows Check the operational worki...

Page 34: ...iler refer to Frame 39B The boiler will repeat its ignition sequence If reset occurs 5 times within 15 minutes then Too many resets will be shown If power is removed this will be reset When the burner is established the BLUE Burner On neon F will be illuminated the LCD will display Central Heating and Radiator Temp XXo C DOMESTIC HOT WATER 11 With the boiler firing set the DHW Temp Control knob B ...

Page 35: ...Timer or room stat off Domestic hot water operation Hot water Temperature 64ºC High efficiency Central heating operation Radiator Temp 80ºC High efficiency Pre heat operation Pre heat Central heating Temperature 59ºC High efficiency Boiler frost protection Boiler frost protection Temperature 5ºC Pump overrun Pump overrun Fan post purge Fan post purge High efficiency Note High efficiency will not b...

Page 36: ...low rate and diverter valve position in the following format MESSAGE 1 CURRENT VALUES Flow temp 80ºC Return temp 60ºC DHW temp 64ºC DHW flow rate 8 l min Diverter valve DHW position 3G9714 Note If you would like to hold one of the values on the display to watch its behaviour then turn the reset knob to the reset position while it is displayed and hold it there Finally the display will operate in o...

Page 37: ...utput Check at the gas meter with no other appliance in use Refer to Tables 2 and 3 for gas rates 4 Close the DHW tap The burner should remain on and the boiler will display Central heating Radiator temp XXC 5 Set the central heating external controls to off The burner will go off and the fan and pump continue to run for 4 minutes The boiler will display Pump overrun after which the boiler will di...

Page 38: ...wn procedures 3 The operation of the boiler and the use and adjustment of all system controls should be fully explained to the householder to ensure the greatest possible fuel economy consistent with the household requirements of both heating and hot water consumption Advise the User of the precautions necessary to prevent damage to the system and to the building in the event of the system remaini...

Page 39: ...e DHW filter for blockage Refer to Frame 72 The cleaning procedures are covered more fully in Frames 44 48 and must be carried out in sequence Important 6 After completing the servicing or exchange of components always test for gas tightness 7 When work is complete the front panel MUST be correctly refitted ensuring that a good seal is made Do not operate the boiler if the front panel is not fitte...

Page 40: ...nsuring the 4 control knobs line up with the holes in the front panel 5 Re tighten the two retaining screws 44 fan and venturi assembly removal and cleaning 1 Disconnect the electrical leads from the fan 2 Undo the gas pipe union connection to the injector housing 3 Remove the extended nut on the fan mounting bracket 4 Lift off fan and venturi assembly 5 Inspect the injector for blockage or damage...

Page 41: ...r head is a ceramic plaque construction Care must be taken to ensure that the burner is not placed down upon its face as this may cause damage to the ceramic 6 Brush off any deposits that may be on the ceramic with a SOFT brush 7 Inspect the sealing gasket around the burner for any signs of damage Replace as necessary 1 Remove the cleaning plug taking care with any residual condense 2 Pull off the...

Page 42: ...e 7 Check that the ignition and detection gaps are correct Refer to Frames 54 55 1 Ignition Electrode Flame Detection Reassemble the boiler in the following order 1 Ensure that the condensate trap siphon is full of water 2 Refit the burner ensuring the sealing gasket is correctly positioned and free from damage tighten the 4 fixing screws in the sequence shown below 3 Refit the fan venturi assembl...

Page 43: ...rame 63 THE BOILER MUST NOT BE OPERATED without THE FRONT PANEL FITTED 50 fan replacement 1 Refer to Frame 49 2 Disconnect the electrical leads from the fan 3 Undo the gas pipe union connection to the injector housing 4 Remove the extended nut retaining the fan mounting bracket 5 Lift and remove the fan and venturi assembly 6 Remove the screw and twist venturi anti clockwise to remove venturi asse...

Page 44: ... that the new gas seal supplied is located correctly in the injector housing 10 Check operation of the boiler Refer to Frames 37 40 2 4 3 6 52 burner REPLACEMENT 5 5 6 1 See Frame 45 2 Refer to Frame 49 3 Undo the two screws and remove the sump cover 4 Lift the manifold to clear the bottom sealing gasket and remove manifold 5 Remove the 2 front fixing screws and loosen the 2 rear extended nuts 6 L...

Page 45: ...n of the boiler Refer to Frames 37 40 53 control thermistor return thermistor reNEWAL 1 Refer to Frame 49 2 Unclip the control thermistor from the flow pipe and withdraw it from the boiler 3 Unclip the return thermistor from the return pipe and withdraw it from the boiler 4 Disconnect the electrical leads from the thermistors 5 Reconnect the electrical leads to the new thermistors and reassemble i...

Page 46: ...ensuring the two earth leads are correctly replaced 5 Check operation of the boiler Refer to Frames 37 40 Flame Detection Electrode Spark Generator 12 5mm Straight edge 1 Refer to Frame 49 2 Remove the burner Refer to Frame 52 3 Unplug the flame detection lead from the electrode 4 Remove the 2 screws retaining the detection electrode 5 Remove the electrode 6 Fit the new flame detection electrode u...

Page 47: ...e to the bracket and withdraw the valve forwards 6 Fit the new gas control valve ensuring the two sealing washers are in place and reconnect gas and electrical connections 7 Check operation of the boiler Refer to Frames 37 40 58 diverter valve actuator replacement 1 Refer to Frame 49 2 Remove the electrical plug 3 Using a suitable tool pull out the retaining clip and lift the diverter head from th...

Page 48: ...o where applicable push the small plastic clip with an electrical screwdriver to facilitate plug removal 6 Spring out the two side retaining clips and pull the PCB upwards to clear the 4 corner retaining posts 7 Take the new Primary PCB and attach the appropriate Boiler Chip Card BCC to it this should correspond to the output of the boiler 24kW 30kW or 35kW Note Ensure the correct orientation of B...

Page 49: ...bs which must be in a vertical position 5 Reassemble in reverse order 6 Check operation of the boiler Refer to Frames 37 40 61 User control PCB replacement 3 62 DHW FLOW TURBINE Sensor REPLACEMENT 1 Refer to Frame 49 2 Remove condensate trap siphon Refer to Frame 59 3 Lift off the flow turbine sensor plastic retaining clip 4 Unplug the electrical connection and transfer to new turbine sensor 5 Rea...

Page 50: ...2 Close all the DHW water isolating valves on the boiler inlet 3 To drain the domestic hot water circuit As there is no direct drain for the domestic hot water circuit depending on the location of the boiler opening the lowest hot water tap may drain this circuit However it must be noted that some residual water will be experienced during replacement of components 4 After replacing any component o...

Page 51: ... the reverse of the above Ensure the air vent head o ring seal is in place when refitting and the new o ring is fitted to the return pipe top connection 7 Ensure the air vent cap is loose 8 Refill the boiler Refer to Frame 29 Check for leaks around the new air vent joint 9 Check the operation of the boiler Refer to Frames 37 40 5 4 67 DHW FLOW TURBINE CARTRIDGE REPLACEMENT 1 Refer to Frame 49 2 Dr...

Page 52: ...ensuring the correct fit of the pin 10 Reassemble in reverse order 11 Refill the boiler Refer to Frame 29 12 Check operation of the boiler Refer to Frames 37 40 FRONT CARTRIDGE REAR CARTRIDGE 3 4 9 8 1 Refer to Frame 49 2 Drain the boiler Refer to Frame 63 3 Remove condensate trap siphon Refer to Frame 59 4 Remove the diverter valve actuator Refer to Frame 58 5 Remove the 2 allen screws securing t...

Page 53: ... 63 4 Remove the DHW flow turbine cartridge Refer to Frame 67 5 Unscrew the flow regulator housing 6 Inspect the flow regulator for any blockage and remove if necessary 7 Reassemble in reverse order 8 Refill the boiler Refer to Frame 29 9 Check Operation of the boiler Refer to Frames 37 40 5 5 71 CH Water Pressure sensor Replacement 1 Refer to Frame 49 2 Drain the boiler Refer to frame 63 3 Remove...

Page 54: ... pipe 12 Undo the flow pipe union nut and remove pipe 13 Remove the condensate rubber pipe Refer to Frame 59 no 2 14 Remove the two heat exchanger fixing screws 15 Remove the Heat exchanger 16 Reassemble in reverse order ensuring the heat exchanger LH retaining bracket is correctly positioned Replace any new o rings supplied with new heat exchanger and replacing gaskets or seals if any sign of dam...

Page 55: ...crew the 2 screws from the securing clamp located on the top of the boiler and remove Note the position of the bracket on the vessel 10 Remove the expansion vessel 11 Fit the new expansion vessel 12 Reassemble in reverse order 13 Refill the boiler Refer to Frame 29 14 Check operation of the boiler Refer to Frames 37 40 3 9 1 Refer to Frame 49 2 Remove the old seal from the casing and thoroughly cl...

Page 56: ...ler Go to Frame 85 Flow Thermistor Fault Return thermistor fault Contact installer Go to Frame 86 Return Thermistor Fault Outside sensor fault Contact installer Go to Frame 87 Outside sensor fault Low mains voltage Contact electricity provider Low mains voltage Contact Electricity Provider PCB Fault Contact installer If PCB is a spare check Boiler Chip Card BCC fitted otherwise replace PCB PCB Rep...

Page 57: ...ry no Check gas supply and rectify fault no yes Is approx 215Vdc supply available at the Gas Valve See note yes Check spark generator and associated harness for continuity and visual condition Refer to Frame 56 Are these functioning correctly yes Check ignition electrode and associated harness for continuity visual condition and position Refer to Frame 54 Are these functioning correctly Check siph...

Page 58: ...hermistor s terminal pins At 25 o C expect 9 700 10 300 Ohms At 60 o C expect 2 400 2 600 Ohms At 85 o C expect 1 000 1 100 Ohms Does the boiler now work OK 81 FAULT 8 CONTACT INSTALLER False Flame Lockout Reset the boiler does Boiler Work OK NO Check routing and integrity of internal boiler wiring is OK Check condition of Flame Sense Electrode and replace if deteriorated Separate the flame detect...

Page 59: ... associated harness for continuity visual condition and position Refer to Frame 54 Are these functioning correctly yes Check siphon and condensate drain pipe work for blockage and rectify if necessary Boiler now working OK Check wiring from gas valve to PCB for continuity If the wiring is OK then replace the PCB no Replace Spark Generator and Harness as necessary no Replace Ignition Electrode and ...

Page 60: ...hermistor value correct yes Is there continuity between the PCB and the Thermistor yes Replace PCB Fit a new Thermistor no Check and replace wiring as necessary no 86 RETURN THERMISTOR FAULT CONTACT INSTALLER Remove the Return Thermistor from the CH Return Pipe and disconnect the wires Check the resistance using a suitable multimeter connected across the thermistor s terminal pins At 25 o C expect...

Page 61: ...ck and the PCB Is the wiring securely connected at both the boiler and Outside Sensor yes no Securely connect the wiring at both the boiler and Outside Sensor 88 NO WATER FLOW THERMISTOR FAULT CONTACT INSTALLER Disconnect the wiring from the No Water Flow Thermistor Check the resistance using a suitable multimeter connected across the Thermistor s terminal pins At 25 o C expect 9 700 10 300 Ohms A...

Page 62: ... new BCC that is correct for the boiler After switching power on and c0 being shown reset the boiler Is c2 still shown Replace PCB YES 90 nO ch oPERATION BUT dhw WORKS ok Is the mode knob in the Winter position yes no Move the mode knob to the Winter position Are the Timer and the Room Thermostat switched on yes no Switch the Timer and Room Thermostat On Are the Radiator Valves Open yes no Open th...

Page 63: ...ot blocked with debris no Reconnect wiring or replace wiring harness if no continuity no Re engage diverter head and secure clip to wateset no Replace PCB YES Is hot and cold pipework crossed Replace PCB NO NO Is the wiring connected between PCB and DHW sensor Remove the turbine and check for debris in the turbine filter Replace turbine if necessary Is DHW OK YES NO Re connect wiring NO Replace tu...

Page 64: ...er 24 1 175417 Plate Heat Exchanger 30 1 175418 Plate Heat Exchanger 35 1 175419 127 Flow Sensor Hall Effect 1 175590 128 DHW Flow Turbine 24 1 175660 DHW Flow Turbine 30 1 175661 DHW Flow Turbine 35 1 175662 131 Water Pressure Sensor 1 175596 135 Pressure Gauge 1 175679 205 Gas Valve kit 1 175562 211 Injector Housing 24 1 175610 Injector Housing 30 1 175611 Injector Housing 35 1 175612 215 Fan Ki...

Page 65: ...65 Short list of parts Ideal Logic Combi Installation and Servicing ...

Page 66: ...chmark Commissioning Checklist will invalidate the warranty This does not affect he customer s statutory rights If yes and if required by the manufacturer has a water scale reducer been fitted If the condensate pipe terminates externally has the pipe diameter been increased and weatherproof insulation fitted Telephone Number ...

Page 67: ... Gas Safe Register Number Gas Safe Register Number Gas Safe Register Number Gas Safe Register Number Gas Safe Register Number Gas Safe Register Number Gas Safe Register Number Gas Safe Register Number Gas Safe Register Number ...

Page 68: ...al Technical Training Centre offers a series of first class training courses for domestic commercial and industrial heating installers engineers and system specifiers For details of courses please ring 01482 498 432 Manufactured under an ISO 9001 registered quality management system The code of practice for the installation commissioning servicing of central heating systems Ideal Installer Technic...

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