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Dimplex System 18 Installation And Servicing Instructions

System condensing boilers
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S S y y s s t t e e m m 1 1 8 8
S S y y s s t t e e m m 3 3 0 0
System Condensing Boilers
Installation and
Servicing Instructions
These instructions should be left with the user
© Dimplex Boilers 2008

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Summary of Contents for Dimplex System 18

  • Page 1: Installation And Servicing Instructions

    S S y y s s t t e e m m 1 1 8 8 S S y y s s t t e e m m 3 3 0 0 System Condensing Boilers Installation and Servicing Instructions These instructions should be left with the user © Dimplex Boilers 2008...
  • Page 2 N N a a t t u u r r a a l l G G a a s s Dimplex System 18 - Gas Council Appliance No: 4 4 1 1 1 1 4 4 9 9 0 0 2 2...
  • Page 3 Technical Data Dimensions System Details Site Requirements Flue options Installation 10.0 Commissioning 11.0 Service Mode 12.0 Servicing & Maintenance 13.0 Changing Components 14.0 Electrical 15.0 Spare Parts 16.0 Fault Finding 17.0 Benchmark 18.0 Warranty Terms & Conditions © Dimplex Boilers 2008...

  • Page 4: Introduction

    The manufacturers instructions must not be taken as overriding fully supports the aims of the programme. Its aim is to any statutory requirements. If in doubt contact Dimplex Boilers improve the standards of installation and commissioning of on 0844 3711121.
  • Page 5 Installation of hot water supplies for domestic purposes BS 5449 Forced circulation hot water systems BS 7074 Expansion vessels and ancillary equipment for sealed water systems BS 7593 Treatment of water in domestic hot water central heating systems © Dimplex Boilers 2008...
  • Page 6 CH system content is less than 84 litres. However one is required for systems with volumes greater than 84 litres; refer to section 6.5. It is recommended that a drain cock is fitted at the lowest point in the system. © Dimplex Boilers 2008...
  • Page 7 1 1 5 5 2 2 5 5 24. Central Heating Mode Light 25. Display 26. Flue Thermistor 27. Thermal Fuse F F i i g g . . 2 2 1 1 6 6 2 2 3 3 © Dimplex Boilers 2008...
  • Page 8 Expansion Vessel Primary Heat Exchanger Burner & CH flow Burner Flange Thermistor CH return Thermistor Primary Return Flow Condensate Automatic Trap Pump & Vent Hydroblock 3 BAR Pressure Relief Valve Pressure Gauge Return © Dimplex Boilers 2008...
  • Page 9 P P . . P P . . M M = = P P a a r r t t s s P P e e r r M M i i l l l l i i o o n n © Dimplex Boilers 2008...
  • Page 10 148mm 150mm 94mm 796mm 446mm 333mm F F i i g g . . 5 5 Tap Rail 125mm 125mm 10mm Condensate CH Flow Gas Inlet CH Return Drain (22mm) (22mm) (22mm) 1 1 0 0 © Dimplex Boilers 2008...
  • Page 11 I I N N F F O O R R M M A A T T I I O O N N 1. The Dimplex System Boiler is a ‘Water Byelaws Scheme - Approved Product’. Reference to the Water Research Council publications, ‘Water fittings and materials directory’...
  • Page 12 . . d d o o o o r r s s . . 1 1 2 2 © Dimplex Boilers 2008...

  • Page 13: Dimensions

    F F i i g g . . 1 1 2 2 5mm Min 5mm Min 285mm Wall 285mm Wall 285mm Wall 5mm Min 5mm Min 200mm 796mm 446mm 450mm Min For Servicing 200mm 5mm Min Purposes In Operation 1 1 3 3 © Dimplex Boilers 2008...
  • Page 14 Minimum free area: System 18 = 88cm System 30 = 159cm In addition if an open flued system is used - Flue kit (B23 classification) and the boiler is fitted in a compartment, then high and low level ventilation is required.
  • Page 15 For help with selecting a condensate pump contact Dimplex Boilers - Tel: 0844 3711121. W W A A R R N N I I N N G G : : There must be no air breaks in the condensate pipework or drainage system (see Fig.
  • Page 16 . . From a vertical drain pipe or soil pipe Below balconies or car port roof Below eaves 1 1 6 6 Below gutters, soil pipes or drain pipes © Dimplex Boilers 2008...
  • Page 17 1.5° - 3° to the horizontal, falling back towards the boiler. N N o o t t e e : : Dimplex System 18 only, with maximum concentric Kit A + flue length of 10m, the heat input will be reduced by 7.6% Vertical flue kit - Part no.
  • Page 18 - with sampling point Part no. 956093 (1m extension) Part no, 956092 (0.5m extension) Ensure all horizontally fitted pipes are routed with a 1.5-3° fall towards the boiler. 1 1 8 8 © Dimplex Boilers 2008 Kit D...
  • Page 19 ( ( B B 2 2 3 3 ) ) - - P P a a r r t t n n o o . . 9 9 5 5 6 6 0 0 8 8 2 2 Chimney terminal N N o o t t e e : : Dimplex System 18 and 30: Maximum flue length = 30m. Minimum length for all Dimplex System boilers = 5m. The chimney must be swept and cleared of any debris and obstructions.

  • Page 20: Site Requirements

    13. Fit the filling loop as described in the instructions supplied with it. Flushing Pipe F F i i g g . . 3 3 0 0 Central Heating Flow or Return Pipe 2 2 0 0 © Dimplex Boilers 2008...
  • Page 21 F F i i g g . . 3 3 2 2 Pressure Relief Discharge Pipe 2 2 1 1 F F i i g g . . 3 3 3 3 © Dimplex Boilers 2008...

  • Page 22: Installation

    6. Finally use the internal sealing ring to make good the internal hole. Check that the external wall sealing ring and the terminal is correctly located on the outside wall. 2 2 2 2 © Dimplex Boilers 2008...

  • Page 23: Commissioning

    Fused supply 3A Permanent live brown (live) L1 brown 230V~50Hz Connect external control using L2 & L3 Disconnect link wire F F i i g g . . 3 3 7 7 2 2 3 3 © Dimplex Boilers 2008...
  • Page 24 F F i i g g . . 4 4 3 3 F F i i g g . . 4 4 1 1 Boiler Drain Point 2 2 4 4 F F i i g g . . 4 4 2 2 © Dimplex Boilers 2008...

  • Page 25: Service Mode

    0 0 8 8 4 4 4 4 3 3 7 7 1 1 1 1 1 1 2 2 1 1 . . I I f f i i n n d d o o u u b b t t - - A A S S K K . . 2 2 5 5 © Dimplex Boilers 2008...
  • Page 26 10 minutes. 3. To exit Service Mode, turn the CH knob anti-clockwise to the temperature previously set by the customer. The CH light will now stop flashing. 2 2 6 6 © Dimplex Boilers 2008...
  • Page 27 7. Set the boiler into Service Mode at Min Rate (see section 11.1). 8. Check the Carbon Monoxide (CO) and Carbon Dioxide (CO readings are within the range quoted in the tables opposite (Table 1). 2 2 7 7 © Dimplex Boilers 2008...
  • Page 28 (Table 1). If the Carbon Monoxide or Carbon Dioxide levels are outside the range quoted, call Dimplex Boilers Ltd Technical Helpline on 0844 3711121. If in doubt ASK! 2 2 8 8...
  • Page 29 Burner Door Seal F F i i g g . . 5 5 1 1 Gas Inlet Nut F F i i g g . . 5 5 2 2 2 2 9 9 © Dimplex Boilers 2008...

  • Page 30: Changing Components

    6mm ± 0.5 to Burner 4mm ± 0.5 Gasket F F i i g g . . 5 5 6 6 F F i i g g . . 5 5 5 5 3 3 0 0 © Dimplex Boilers 2008...
  • Page 31 See Section 10. Burner Door Air/Gas Channel Fan Gasket Fan Adaptor Plate Injector Injector ‘O’ Ring F F i i g g . . 5 5 7 7 Swirl Plate Injector Plate Gas Valve 3 3 1 1 © Dimplex Boilers 2008...
  • Page 32 (Fig. 59). 9. Reassemble in reverse order. Washer Insulation Inner Seal Burner Door Seal F F i i g g . . 5 5 9 9 Burner Assembly 3 3 2 2 © Dimplex Boilers 2008...
  • Page 33 2. Ease the sensor clip away from the pipe and remove (Fig. 61). 3. Reassemble in reverse order. Central Heating Return Temperature Thermistor b ar m fo Central Heating Flow Temperature Thermistor F F i i g g . . 6 6 1 1 3 3 3 3 © Dimplex Boilers 2008...
  • Page 34 Un-Locked Locked (viewed from pipe end) (viewed from pipe end) Rear Stainless Clip Front Stainless Clip F F i i g g . . 6 6 3 3 X X 2 2 3 3 4 4 © Dimplex Boilers 2008...
  • Page 35 4. Fit the new valve and ‘O’ ring and set to the previously noted orientation. Reassemble in reverse order. ‘O’ Ring Retaining Clip Discharge Pipe F F i i g g . . 6 6 6 6 3 3 5 5 © Dimplex Boilers 2008...
  • Page 36 Left Hand Retaining Bracket 11. Reassemble in reverse order. Right Hand Retaining Bracket F F i i g g . . 6 6 8 8 Flow Pipe Retaining Clip Return Pipe Retaining Clip 3 3 6 6 © Dimplex Boilers 2008...
  • Page 37 Facia the PCB. 8. Unless specifically instructed N N O O T T to do so by the Dimplex Service Department, always fit the new BCC if supplied with the replacement PCB.
  • Page 38 DETECTION ELECTRODE GAS VALVES 230Vac IGNITION ELECTRODE 1C BOILER PUMP 1B MAINS o b g/y r br RIBBON TO PCB L2 L1 MAINS POWER 230V ~ AC ROOMSTAT OR LINK LCD DISPLAY 3 3 8 8 © Dimplex Boilers 2008...
  • Page 39 Electrode - Ignition c/w Gasket 988526 H38-213 Detection Electrode c/w Gasket 988540 H29-236 Spark Generator c/w Lead 500665 System 18 gas control valve assembly NG 988675 System 30 gas control valve assembly NG 988676 H38-215 Fan Assembly 601016 H29-171 Burner (System18)
  • Page 40 Pin 3 - Earth Connection resistance = 3770 Ω. Pin 4 N N O O T T E E : : Allow a tolerance of approximately +/- 10% on Pin 5 resistance reading. 4 4 0 0 © Dimplex Boilers 2008...
  • Page 41 Check Resistances of Flow and of Return thermistors 15seconds from boiler firing Check for air in Heat Exchanger Check heating system Pipework is correct Boiler Chip Card Error Reset the boiler following the BCC fitting instructions 4 4 1 1 © Dimplex Boilers 2008...

  • Page 42: Gas Boiler System Commissioning Checklist

    All installations in England and Wales must be notified to Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme. A Building Regulations Compliance Certificate will then be issued to the customer. ©Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk 4 4 2 2 © Dimplex Boilers 2008...

  • Page 43: Service Record

    Date Date Energy Efficiency Checklist completed? Energy Efficiency Checklist completed? Engineer Name Engineer Name Company Name Company Name Telephone Number Telephone Number CORGI ID Number CORGI ID Number Comments Comments Signature Signature 4 4 3 3 © Dimplex Boilers 2008...

  • Page 44: Benchmark

    A installations in England and Wales must be notified to Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme. A Building Regulations Compliance Certificate will then be issued to the customer. ©Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk 4 4 4 4 © Dimplex Boilers 2008...
  • Page 45 Company Name Telephone Number Telephone Number Comments Comments Signature Signature SERVICE 9 SERVICE 10 Date Date Engineer Name Engineer Name Company Name Company Name Telephone Number Telephone Number Comments Comments Signature Signature 4 4 5 5 © Dimplex Boilers 2008...
  • Page 46 Providing all the above Terms and Conditions are met, this warranty covers functional parts and labour. Dimplex offer the opportunity for a system audit and commissioning check within 30 days of registration. This is chargeable at the same rate as an annual service and if taken up then the first annual service will be provided free of charge. Failure to take up this offer may invalidate the full warranty which will revert to a standard 2 year warranty which will require an annual service In year 2 in any event.
  • Page 47 4 4 7 7 © Dimplex Boilers 2008...
  • Page 48 . . d d i i m m p p l l e e x x b b o o i i l l e e r r s s . . c c o o . . u u k k Dimplex Boilers is continually improving its products and therefore reserve the right to change product specifications without prior notice.

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