IDEAL LOGIC + Combi 24 Installation And Servicing
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IDEAL LOGIC + Combi 24 Installation And Servicing

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See also: Installation and Servicing , User Manual
INSTALLATION
AND SERVICING
LOGIC + Combi
24, 30, 35
For details of document amendments, refer to page 3
When replacing any part on this appliance, use only spare parts that you can 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

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Summary of Contents for IDEAL LOGIC + Combi 24

  • Page 1 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.
  • Page 2 Ideal Logic Combi - Installation and Servicing...

  • Page 3: Flue Installation

    Frames condensed into one (Water Connections DHW & CH, Gas Connection, Safety Valve Drain & Filling) page 32, Frame 35 Wiring Diagram New Updated Wiring Diagram Ideal Stelrad Group reserve the right to vary specification without notice Ideal Logic Combi - Installation and Servicing...
  • Page 4 Table 1 - general Data Ideal Logic + Combi Gas supply 2H - G20 - 20mbar Gas Supply Connection 15mm copper compression Injector Size (mm) 4.15 4.65 Inlet Connection Domestic Hot Water 15mm copper compression Outlet Connection Domestic Hot Water...

  • Page 5: Table Of Contents

    CONTENTs IDEAL LOGIC + COMBI Air supply ..............9 Natural gas only Benchmark Commissioning Checklist ..... 66 Boiler size g.C. Appliance No. pI No. Boiler Clearances ............10 (Benchmark No.) Boiler Exploded Diagram ........... 13 47-348-65 86 CL 08 Condensate Drain ........

  • Page 6: Safe Handling

    Avoid upper body/top heavy bending. • Always grip with the palm of the hand. • Use designated hand holds. • Keep load as close to the body as possible. • Always use assistance if required. Ideal Logic Combi - Installation and Servicing...

  • Page 7: Gas Safety Regulations

    Installation and Servicing Instructions or as otherwise recommended by Ideal stelrad group in writing. If in doubt please enquire. Any direct connection of a control device not approved by Ideal stelrad group could invalidate the certification and the normal appliance warranty.

  • Page 8: Gas Supply

    Frame 1. In addition, sufficient space may be required to 2. It is important that the position of the terminal allows the free allow lifting access to the wall mounting plate. passage of air across it at all times. Ideal Logic Combi - Installation and Servicing...

  • Page 9: Air Supply

    It is a universal fitting to allow use of different * Only one reduction down to 25mm is allowable per installation brands of pipework. otherwise BS5440-1 2008 dimensions must be followed. Ideal Logic Combi - Installation and Servicing...
  • Page 10 100mm clearance required for servicing. 7.5 m 7.5 m 345 mm 8.0 m 8.0 m 360 mm 8.5m 370 mm REAR FLUE ONLy 9.0 m 385 mm MIN. Top clearance required = 165 mm Ideal Logic Combi - Installation and Servicing...

  • Page 11: Pump

    1.0 bar if the system is to be pre-pressurised. Guidance on vessel sizing is given in Table above. continued ..Ideal Logic Combi - Installation and Servicing...

  • Page 12: Domestic Hot Water

    Inhibitor branded Ideal, which must be used in accordance Central Heating Systems. with the manufacturers’ instructions. If water treatment is used Ideal stelrad group recommend only the use of Scalemaster Gold 100, FERNOx, MBI or SENTINEL For further information contact: X100 inhibitors and associated water treatment products, which must be used in accordance with the manufacturers’...
  • Page 13 Primary PCB as a spare, an additional Boiler Chip Card (BCC) MUST also be purchased for your specific boiler range and output. BCC* 204978-9685b Ideal Logic Combi - Installation and Servicing...

  • Page 14: Unpacking

    Flow Valve Pack Accessory Pack 1. Screw (x2) 2. Wallplug (x2) Flow Valve Pack 1. Pipe CH Flow 2. Washer CH 204978-9687b 3. Valve Flow (with gauge) continued ..Ideal Logic Combi - Installation and Servicing...

  • Page 15: Front Panel Removal

    Cutting Aid FRONT pANEL REMOVAL 1. Loosen the 2 screws retaining the front panel. 2. Pull the two spring clips downwards to disengage. 3. Pull the front panel forward and upwards to remove. Ideal Logic Combi - Installation and Servicing...
  • Page 16 (Centre line of turret to outside of wall terminal) REAR FLUE sIDE FLUE Wall Thickness X 155 mm 197mm 197mm 155 + S = 200mm Side flue length L Wall Thickness X 197mm 197mm continued ..Ideal Logic Combi - Installation and Servicing...
  • Page 17 2. Flue turret. The flue terminal MUST be fitted with the ‘TOP’ 3. Turret clamp. uppermost to allow the correct fit and use of the plume management telescopic b Pack shown 3G9499a system. Ideal Logic Combi - Installation and Servicing...

  • Page 18: Wall Mounting Template

    3. Locate 2 No.14 x 50mm screws in the wall mounting plate Note. Check all of the hole positions before drilling. (one at each side, in any of the 3 holes provided at each side) and screw home. Ideal Logic Combi - Installation and Servicing...
  • Page 19 3. To ensure the tube is cut square, mark the flue all the way around. this 4. Cut the inner tube to a length 20mm longer to aid engagement, RING using the cutting aid provided. 3G9675 Ideal Logic Combi - Installation and Servicing...
  • Page 20 D Flue extension duct kit contents Flue support cutting aid Extension duct & clamp (shown folded up) 1.0m (39") long Wall plugs - 4 off Flue duct support nm8732 No. 10 x2" wood screw - 4 off Ideal Logic Combi - Installation and Servicing...
  • Page 21 4. If the remainder Y is 300mm - 500mm this can be taken up length. by the adjustment in the telescopic flue. 3G9616 Ideal Logic Combi - Installation and Servicing...

  • Page 22: Safe Handling

    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. Condensate Drain Ideal Logic Combi - Installation and Servicing...
  • Page 23 4. TERMINATION TO DRAIN / gULLy External External wall wall Open end of pipe Termination BOILER BOILER direct into gulley to Soak away below grating but above water level cla7775 cla7774 Ground Level Ground Level minimum DRAIN 500mm Ideal Logic Combi - Installation and Servicing...

  • Page 24: Connecting The Flue To The Boiler

    1 metre of extension pipe used and a bracket should be used at every joint, to ensure pipes are held at the correct angle. Flue Outlet 204978-9847f Retaining Clip 3G9847d (assembled) Plastic Pegs (assembled) 3G9847e Ideal Logic Combi - Installation and Servicing...

  • Page 25: Fitting The Optional Roof Flue Kit (Flat Or Pitched)

    Vertical connector elbow UIN 203132 UIN 152259 UIN 204645 UIN 203130 elbow UIN 203131 Flue Flue Seal Collar - Tile Roof duct UIN 152258 support Roof Flue Extension Duct UIN 203129 Flue duct support Ideal Logic Combi - Installation and Servicing...

  • Page 26: Flue Terminal Position

    The equivalent flue length resistance of the elbow kits are: Below eaves or balcony 500 mm elbow kit = 1m Below velux windows 2000mm elbow kit = 0.6m Above or side of velux windows 600mm Ideal Logic Combi - Installation and Servicing...

  • Page 27: Assembling The Roof Flue Kit

    7. Finally ensure the roof flashing plate is correctly sealed to the roof. Ideal Logic Combi - Installation and Servicing...

  • Page 28: Connections & Filling

    Note that all isolation handles Valve Black are shown in the open postion. Safety Valve Handle Drain Connection Black Handle Filling 204626-00010246 15mm elbow Loop or fittings Safety Valve (not supplied) Drain Pipe Ideal Logic Combi - Installation and Servicing...

  • Page 29: Internal Wiring

    The terminal block cover carries two spare fuses for the main PCB. 6. Connect wires to terminal block, as shown below 7. Re-assemble in reverse order. Spare PCB fuses continued ..Ideal Logic Combi - Installation and Servicing...
  • Page 30 INsTALLATION 32 INTERNAL WIRINg CONT’D Ideal offer 5 kits as follows: (see individual kits for installation instructions) Mechanical Timer (24 hr) Kit - 24 hour mechanical CH timer fits into the control box of the boiler. This can be fitted in conjunction with a room thermostat.

  • Page 31: External Electrical Controls

    Earths are not shown for clarity but must never Room Stat Frost Stat be omitted. Use of General Live for Room Stat Room Optional Stat Frost Stat Mains In Room Stat Frost Stat 3G9503 Ideal Logic Combi - Installation and Servicing...
  • Page 32 INsTALLATION 35 WIRINg DIAgRAM Ideal Logic Combi - Installation and Servicing...

  • Page 33: Commissioning And Testing

    Handle Valve working. Black Handle 3G9927 ATTENTION ! IT Is A CONDITION OF ThE MANUFACTURERs WARRANTy ThAT ThE BENChMARK COMMIssIONINg ChECKLIsT Is FULLy COMpLETED AND LEFT WITh ThE AppLIANCE Ideal Logic Combi - Installation and Servicing...

  • Page 34: Initial Lighting

    When the burner is established the BLUE ‘Burner On’ neon (F) isolation of the mains electricity supply. will be illuminated, the LCD will display “central heating” and “radiator temp XX c”. continued..Ideal Logic Combi - Installation and Servicing...
  • Page 35 Mode knob moved to summer position Summer mode Central heating off Hot water on Mode knob moved to winter position Winter mode Central heating on Hot water on Mode knob moved to reset position Reset Ideal Logic Combi - Installation and Servicing...
  • Page 36 To reset boiler, turn the mode control knob (D) to reset position and immediately turn knob back to required setting. The boiler will repeat the ignition sequence. Legend A. Pre-heat On/off D. Off/Summer/Winter/Reset Control B. DHW temperature control E. Boiler Status C. CH temperature control F. Burner ‘on’ indicator Ideal Logic Combi - Installation and Servicing...
  • Page 37 DhW Outlet Temp requirement. 6. Balance the system. Refer to Frame 4. 80 (176) 64 (147) 7. Check the condensate drain for leaks and check that it is discharging correctly. 45 (113) 40 (104) Ideal Logic Combi - Installation and Servicing...

  • Page 38: Handing Over

    6. Explain and demonstrate the function of time and temperature controls, radiator valves etc., for the economic use of the system. 7. If a timer is fitted draw attention to the timer Users Instructions and hand them to the householder. Ideal Logic Combi - Installation and Servicing...

  • Page 39: Servicing Schedule

    0.004 AND the integrity of the complete flue system and combustion circuit seals have been verified and the inlet gas pressure (and gas rate) have been verified, then contact Ideal. 11. Complete the service section in the Benchmark Commissioning Flue Sampling Point Checklist.

  • Page 40: Fan And Venturi Assembly Removal And Cleaning

    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. 6. Inspect fan outlet sealing gasket and replace if necessary. Injector Ideal Logic Combi - Installation and Servicing...

  • Page 41: Burner Removal And Cleaning

    2. Pull off the rubber pipe noting the position and flush out any deposits with clean water. 3. Replace the cleaning plug and refill the siphon with water. 4. Replace the rubber pipe connector with the twin wall seal fitted to the condensate siphon. 3G9690 Ideal Logic Combi - Installation and Servicing...

  • Page 42: Cleaning The Heat Exchanger

    9. Turn on the gas supply at the gas service cock. 4. Reconnect the fan electrical leads. 10. Reconnect the electrical supply. 5. Remove the sump cover and refit the lower flue manifold as shown. Ideal Logic Combi - Installation and Servicing...

  • Page 43: Replacement Of Components

    Refit the extended nut. 9. Reassemble the boiler in reverse order, taking care not to overtighten the screw on the fan mounting bracket. 10. Check the operation of the boiler. Refer to Frames 37-40. Ideal Logic Combi - Installation and Servicing...

  • Page 44: Burner Injector Replacement

    7. Fit the new burner, replacing any damaged or deteriorating sealing gasket. 8. Reassemble in reverse order. Refer to Frame 48. 9. Check the operation of the boiler. Refer to Frames 37-40. Ideal Logic Combi - Installation and Servicing...

  • Page 45: Ignition Electrode Replacement

    7. Fit the new ignition electrode, using the new gasket supplied. Check dimensions as shown. 8. Reassemble in reverse order. 9. Check the operation of the boiler. Refer to Frames 37-40. Spark Gap a i g S t r 3.5mm Ideal Logic Combi - Installation and Servicing...

  • Page 46: Flame Detection Electrode Replacement

    4. Fit the new spark generator and re- Spark Generator assemble in reverse order ensuring the two earth leads are correctly replaced. 5. Check operation of the boiler. Refer to Frames 37-40. Ideal Logic Combi - Installation and Servicing...

  • Page 47: Gas Control Valve Replacement

    4. Fit new actuator head and reassemble in reverse order. 6. Check operation of the boiler. Refer to Diverter Valve Actuator Frames 37-40. Retaining Clip Ideal Logic Combi - Installation and Servicing...
  • Page 48 “ - ” turn the knob fully anti-clockwise IMMEDIATELY. Finally move the knob into the required position (Standby, Summer or Winter). 11. Check operation of the boiler. Refer to Frames 37- Ideal Logic Combi - Installation and Servicing...

  • Page 49: User Control Pcb Replacement

    3. Lift off the flow turbine sensor plastic retaining clip. 4. Unplug the electrical connection and transfer to new turbine sensor. 5. Reassemble in reverse order. 6. Check operation of the boiler. Refer to Frames 37-40. Ideal Logic Combi - Installation and Servicing...

  • Page 50: Draining The Boiler

    11. Fit the new safety valve and reassemble in reverse order ensuring the new ‘o’ ring is fitted to the top of the return pipe. 12. Refill boiler. Refer to Frame 29. Check operation of boiler. Refer to Frames 37-40. Ideal Logic Combi - Installation and Servicing...

  • Page 51: Pump Automatic Air Vent Replacement

    6. Fit the new turbine cartridge. 7. Refit the turbine flow sensor 8. Reassemble in reverse order. 9. Refill the boiler. Refer to Frame 29. 10. Check operation of the boiler. Refer to Frames 37-40. Ideal Logic Combi - Installation and Servicing...

  • Page 52: Diverter Valve Internal Cartridge Replacement

    8. Reassemble in reverse order. 9. Refill the boiler. Refer to Frame 29. 10. Check operation of the boiler. Refer to Frames 37-40. Ideal Logic Combi - Installation and Servicing...
  • Page 53 9. Refill the boiler. Refer to Frame 29. 8. Refill the boiler. Refer to Frame 29. 10. Check Operation of the boiler. Refer to Frames 37-40. 9. Check Operation of the boiler. Refer to Frames 37-40. Ideal Logic Combi - Installation and Servicing...

  • Page 54: Heat Engine Renewal

    When replacing the spring clips located on both the flow and return pipe connections, ensure clip is oriented to correctly match connecting pipe diameters. Ideal Logic Combi - Installation and Servicing...

  • Page 55: Expansion Vessel Recharging & Replacement

    5. Reassemble in reverse order. 6. Check operation of the boiler. Refer to Frames 37-40. Note. Ensure that the boiler front panel is correctly sealed, compressing the seal to make an airtight joint. Ideal Logic Combi - Installation and Servicing...

  • Page 56: Fault Finding

    Boiler Chip Card (BCC) MUST also be purchased for your specific boiler range and output. REsET pROCEDURE - To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting. Ideal Logic Combi -...
  • Page 57 In general terms a reading greater than 150V indicates that the correct voltage is supplied to the gas valve. REsET pROCEDURE - To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting. Ideal Logic Combi -...
  • Page 58 Fill and vent the system and open all isolation valves all isolation and radiator valves open (check pressure gauge is between 1 to 1.5 bar)? Are connections on water pressure sensor secure? Re-fit connections Replace water pressure sensor Ideal Logic Combi - Installation and Servicing...
  • Page 59 Does the wiring have continuity? Is there 230Vac at the Blue and Brown connections Replace PCB to the 3 way connection on the Fan? Replace Fan Ideal Logic Combi - Installation and Servicing...
  • Page 60 2,400 - 2,600 Ohms At 85 expect 1,000 - 1,100 Ohms Is the Thermistor value correct? Is there continuity between the PCB and the Thermistor? Check and replace wiring as necessary Replace PCB Ideal Logic Combi - Installation and Servicing...
  • Page 61 Is the Thermistor value correct? Securely connect the wiring to the PCB Is the wiring securely connected to the low voltage 11 way connector at the front left hand side of the PCB? Replace PCB Ideal Logic Combi - Installation and Servicing...
  • Page 62 Are the Radiator Valves Open? There is no Voltage from the Timer/Room Stat. This Is there 230Vac at (A)? is not boiler fault. Ensure Voltage is supplied to boiler by rectifying external wiring. Replace the Divertor Valve Ideal Logic Combi - Installation and Servicing...
  • Page 63 Is the ribbon cable from the main PCB to the User Connect the ribbon from the main PCB to the User Interface PCB connected securely? Interface PCB securely Replace the Is ribbon cable damaged? User Interface Replace ribbon cable Ideal Logic Combi - Installation and Servicing...

  • Page 64: Short List Of Parts

    When replacing any part on this appliance use only spare parts that you can 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.
  • Page 65 LIsT OF pARTs Ideal Logic Combi - Installation and Servicing...
  • Page 66 Failure to install and commission according to the manufacturer’s instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty. This does not affect he customer’s statutory rights. Gas Safe Register Number Telephone Number 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?
  • 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 Gas Safe Register Number...
  • Page 68 & servicing of central heating systems FM 59915 Ideal, P.O. Box 103, National Ave, Kingston upon Hull, HU5 4JN. Telephone: 01482 492 251 Fax: 01482 448 858. Registration No. London 322 137. Ideal stelrad group pursues a policy of continuing improvement in the design and performance of its products.

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