Glow-worm 18sxi Instructions For Use Installation And Servicing
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Glow-worm 18sxi Instructions For Use Installation And Servicing

High efficiency condensing system boiler
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Instructions for Use

Installation and Servicing

18sxi
G.C. No. 41-047-72
30sxi
G.C. No. 41-047-62
High Efficiency
Condensing
System Boiler
Glow-worm, Nottingham Road, Belper, Derbyshire. DE56 1JT
To b e l e f t w i t h t h e u s e r
www.glow-worm.co.uk
0020008155A.02.05

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  • Page 1: Instructions For Use

    Installation and Servicing To b e l e f t w i t h t h e u s e r 18sxi G.C. No. 41-047-72 30sxi G.C. No. 41-047-62 High Efficiency Condensing System Boiler Glow-worm, Nottingham Road, Belper, Derbyshire. DE56 1JT www.glow-worm.co.uk...

  • Page 2: Guarantee Registration

    Guarantee Registration Thank you for installing a new Glow-worm appliance in your home. Glow-worm appliances are manufactured to the very highest standard so we are pleased to offer our customers a Comprehensive Guarantee. This product is guaranteed for 24 months from the date of installation or 30 months from the date of manufacture, whichever is the shorter, for parts.

  • Page 3: Table Of Contents

    Contents The instructions consist of three parts, User, Installation and Servicing Instructions. The instructions are an integral part of the appliance and must, to comply with the current issue of the Gas Safety (Installation and Use) Regulations, be handed to the user on completion of the installation.

  • Page 4: Important Information

    The insulation is composed of non-combustible material. Glow-worm. Electrical Supply Any alteration not approved by Glow-worm, could invalidate the certification, boiler warranty and may also infringe the The boiler must be earthed. current issue of the Statutory Requirements.

  • Page 5: General Information

    General Information General Note Condensate Drain This condensing system boiler is designed to provide central The condensate drain, see section 8.2, must not be modified or heating from a sealed water system with a fully indirect cylinder. blocked. The central heating water temperature can be adjusted on the Pluming from flue terminal boiler.
  • Page 6 Manual Handling Carriage of carton from point of delivery to Positioning of Appliance for Final Installation point of installation – first or higher floor, – above worktop, foreseeable obstructions cellar. etc. Recommend 2-person lift or 1 person with use of sack truck. If Recommend 2 persons lift appliance to position into place.

  • Page 7: Appliance Safety Devices

    Glow-worm. literature. If a part is required contact Glow-worm’s own service organisation If this appliance is installed in a rented property in the UK there using the telephone number on the inside front cover of this is a duty of care imposed on the owner of the property by the booklet.

  • Page 8: Operating The Boiler

    Check that all isolating valves on the boiler are open and that water flows from the hot water tap. If you are in any doubt about the boiler being filled with water contact your installer or Glow-worm's own service organisation using the telephone number on the inside front cover of this booklet. Do not operate the boiler without water.

  • Page 9: Technical Information

    The Health and Safety at Work Act, Control of Substances permission, in writing, from Glow-worm. Hazardous to Health (COSHH). Any alteration that is not approved by Glow-worm, could The Current I.E.E. Wiring Regulations. invalidate the warranty and could also infringe the current issue of the Statutory Requirements.
  • Page 10 Where the heating flow and return pipes come from above the boiler a vertical plumbing kit is available, Central Heating Kit Pt. No. 2000460477. Contact Glow-worm for further details. Diagram 1.2 Do not route any pipes behind the boiler, unless a vertical plumbing kit is used or the pipes are "chased"...
  • Page 11 1 Technical Information TABLE 1 Total Weight 18sxi 41kg (90lb) 30sxi 44.5kg (98lb) ● Gas connection in BSPT) ● Water connection 22mm copper Safety valve Preset 3bar (43.5lbf/in Safety valve discharge 15mm copper ■ Expansion vessel capacity 8 litres (1.76 gallons) Charge pressure 0.5bar (7.3lbf/in...

  • Page 12: Boiler Location And Ventilation

    If the boiler is to be installed in a timber building it should be fitted in accordance with the Institute of Gas Engineers document IGE/UP/7/1998. If in doubt seek advice from the local gas undertaking or Glow-worm. 2.5 Room Ventilation The boiler is room sealed, so when it is installed in a room or space, a permanent air vent is not required.

  • Page 13: Flue Location And Ventilation

    2 x 45 elbows be used then the length MUST be reduced by 1metre. The Glow-worm Flue Options Guide, available on request or through the web site, describes in detail the necessary When extension pipes are used the flue system must be accessories.
  • Page 14 3 Flue Location and Ventilation 3.4 Terminal Position The minimum acceptable siting dimensions for the terminal from obstructions, other terminals and ventilation openings are shown in diagram 3.5. For Ireland the minimum distances for flue terminal positioning must be those detailed in I.S.813 "Domestic Gas Installations".

  • Page 15: Heating System

    The boiler is for use only with sealed central heating systems. MODEL MINIMUM FLOW RATE The safety valve is an integral part of the boiler and it cannot be adjusted. 18sxi 774 litres/hr. The digital read-out on the controls fascia indicates the system pressure when there is no demand. 30sxi 1289 litres/hr.

  • Page 16: Domestic Hot Water System

    4 Heating System 4.6 Water Treatment SUPPLY In the case of an existing installation, it is ESSENTIAL that prior PIPE to installing the new boiler the system is thoroughly flushed. For optimum performance after installation of a new system, the BOILER boiler and its associated central heating system should also be CONTROL...

  • Page 17: Installation Preparation

    6 Installation Preparation 6.1 Appliance Pack Remove the polystyrene end packing pieces then carefully lay the boiler on its back, remove the two front casing panel IMPORTANT: With regards to the Health and Safety Manual securing screws and lift off the panel from two retaining lugs. Handling requirements, two persons shall be required to lift the Remove the transit packaging behind the front panel and appliance, refer to manual handling on page 5.
  • Page 18 6 Installation Preparation 6.2 Wall Template Remove the wall template from the wall mounting pack and place in the desired position on a flat wall, giving due consideration to boiler clearances, see section 2.2, and the flue you are fitting. 6.3 Flue Hole Cutting The standard horizontal flues are designed with an internal fall of 44mm/metre towards the boiler for disposal of condensate.

  • Page 19: Gas/Water & Appliance Connection

    7 Gas/Water & Appliance Connection 7.1 System Connection 7.3 Water Connections The system can now be connected without the boiler being Flush out the heating system before connecting to the boiler, mounted. All water and gas connections are on the fixing jig with refer to section 4.6.

  • Page 20: Safety Discharge Valve And Condensate Connections

    8 Safety Discharge Valve and Condensate Connections 8.1 Safety Discharge Valve SAFETY The pipe from the safety discharge valve must not discharge DISCHARGE above an entrance, window or any type of public access area. VALVE A short discharge tube is supplied loose in the wall mounting pack.
  • Page 21 8 Safety Discharge Valve and Condensate Connections Typical Gravity Draining Condensate Installations INTERNAL SOIL EXTERNAL SOIL AND VENT STACK AND VENT STACK BOILER BOILER EXTERNAL MAX. 3M MIN. DIA. 21MM MIN. DIA. 21MM NO RESTRICTION NO RESTRICTION ON LENGTH ON LENGTH Internal Soil and Vent Pipe External Soil and Vent Pipe or Rainwater Pipe BOILER...

  • Page 22: Flue Preparation Telescopic And Standard Flue

    9.1 Flue Components conditions, see diagram 9.2. The components supplied in the Standard and Telescopic kit The Glow-worm Flue Options Guide, available on request or are shown in diagram 9.1. through the web site, describes in detail the necessary accessories.
  • Page 23 9 Flue Preparation Telescopic and Standard Flue Top Side flue - Standard - with the flue elbow temporarily fitted, 9.2 Flue Length measure the distance from the outside wall to the butt joint, see Top Rear flue - Telescopic - with the flue elbow temporarily diagram 9.5.
  • Page 24 9 Flue Preparation Telescopic and Standard Flue 9.2 (cont'd) Flue and Air Ducts Telescopic: The Telescopic Flue system MUST NOT be cut. Adjust the flue to your required length "Y", mark the securing hole position in the air duct. Drill a 3mm diameter hole at this position, take care not to pierce the inner flue duct.

  • Page 25: Electrical Connections

    WARNING: This appliance must be wired in accordance with these instructions. Any fault arising from incorrect wiring cannot RETAINING be put right under the terms of the Glow-worm guarantee. LATCHES All system components must be of an approved type. Electrical components have been tested to meet the equivalent requirements of the BEAB.
  • Page 26 10 Electrical Connections 10.4 Electrical Connections - Testing Carry out preliminary electrical system checks as below: 1. Test insulation resistance to earth of mains cables. 2. Test the earth continuity and short circuit of cables. 3. Test the polarity of the mains. CABLE CONTROL EXIT...

  • Page 27: Commissioning

    During the conversion to Propane use of a suitable flue gas analyser is necessary. As an option a chargeable boiler only commissioning service can be provided by Glow-worm Service by calling telephone No. 01773 828100. Tools required to make the conversion are a 2mm Allen key and an electricians screwdriver.
  • Page 28 The digital display will now show water temperature. The approximate gas rate: 18sxi : 2.0m /h (71 ft The fan should start and after a few seconds the ignition will commence 30sxi : 3.0m...
  • Page 29 11 Commissioning 11.6 Testing - Heating System Check that all remote controls are calling for heat. The boiler will AUTOMATIC fire automatically. Fully open all radiator valves and flow control BYPASS valve ‘A’ if fitted, see diagram 4.1. VALVE Balance the radiators as required and if fitted adjust valve ‘A’ to give the required system differential.

  • Page 30: Servicing

    When replacing a 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 Glow-worm. 12.1 General COMBUSTION ANALYSER Refer to Table 2 Section 1 Technical Information.

  • Page 31: Servicing

    12 Servicing 12.3 Burner NOTE: IF THE BURNER HAS TO BE REMOVED IT WILL REQUIRE A NEW GASKET WHEN REFITTED. VALVE Drop down the control panel into the service position, see diagram 10.4. Disconnect the gas supply at the gas service cock. Remove the two gas pipe retaining clips, one located below gas valve and the other one located on the underside of the boiler chassis, see diagram 12.4.

  • Page 32: Combustion Check

    ‘flashing’ fan speed on the appliance fascia. In the fully clockwise position the display should be indicating the maximum fan speed of the appliance, 57±1 for 30sxi and RETAINING LATCHES 41±1 for 18sxi. Check the CO value, which should be: 18sxi 30sxi 9.1+0.2-0.5 Case Off...
  • Page 33 12 Servicing 12.7 Central Heating Return Filter RETAINING Turn off the electrical supply to the boiler. CLIP Refer to section12.8 and drain the heating circuit of the boiler. Remove the filter retaining clip and clean filter or renew if necessary, see diagram 12.10. HOUSING Refit the filter, ensuring the correct orientation.

  • Page 34: Fault Finding

    13 Fault Finding NOTE: RETAINING TORX Before trying to operate the boiler make sure that : SLOTS SCREWS (3) • All gas supply cocks are open and that the gas supply has been purged of air. • There is a permanent mains supply to the boiler. •...
  • Page 35 13 Fault Finding Diagram 13.2 0020008155A...
  • Page 36 13 Fault Finding Does ’F’ flash? REFER TO DIAGRAM 13.4. Diagram 13.3 0020008155A...
  • Page 37 13 Fault Finding Diagram 13.4 0020008155A...

  • Page 38: Replacement Of Parts

    IGNITER specification that we require. Do not use reconditioned or copy parts that have not been clearly authorised by Glow-worm. UNIT Replacement of parts must be carried out by a competent person.
  • Page 39 14 Replacement of Parts 14.5 Gas Valve For access, refer to section 14.1. Remove the electrical plug from the gas valve, see diagram 14.2. Refer to section 12.3 for removal of the fan, gas valve and burner assembly. Before removing the gas valve note its position on the fan. Remove the three securing screws, which fix the gas valve, plastic swirl plate to the venturi on the fan.
  • Page 40 14 Replacement of Parts 14.8 Front Insulation 14.10 Viewing Window For access, refer to section 14.1. For access, refer to section 14.1. Refer to section 12.3 for removal of the fan, gas valve and Refer to diagram 14.7. burner assembly. Remove circlip.
  • Page 41 14 Replacement of Parts 14.11 Expansion Vessel SECURING SCREWS For access, refer to section 14.1. AND CLAMPS FLOW AND Refer to section 12.8 and drain the boiler heating circuit. RETURN PIPE Undo the coupling at the base of the vessel, see diagram 14.8. NUTS While holding the vessel remove the securing bolt on the top panel of the boiler and upper support bracket on top of the...
  • Page 42 14 Replacement of Parts 14.15 Safety Discharge Valve For access, refer to section 14.1. Refer to section 12.8 and drain the boiler heating circuit. Refer to diagram 14.12. Undo the safety discharge valve union and remove from the pipework. Remove the securing clip and withdraw the safety discharge SAFETY valve.
  • Page 43 14 Replacement of Parts 14.22 Automatic Bypass Valve 14.19 Automatic Air Vent For access, refer to section 14.1. For access, refer to section 14.1. Refer to section 12.8 and drain the boiler heating circuit. Refer to section 12.8 and drain the boiler heating circuit. Refer to diagram 14.15.
  • Page 44 14 Replacement of Parts 14.24 Heating Circuit Drain Point RETAINING Refer to section 12.8 to drain the boiler heating circuit. CLIP Refer to diagram 14.16. Remove the retaining clip to remove the drain point. Replace the draining point, refill, vent and pressurise the boiler. Check for leaks.
  • Page 45 14 Replacement of Parts 14.27 Hydroblock Assembly Left-Hand Refer to section 12.8 to drain the boiler heating circuit. Refer to diagram 14.15. Undo the connector on the bottom of the flow pipe from the hydroblock. Undo the nut connecting flow pipe to heat exchanger. Lift the flow pipe up out of the way.
  • Page 46 14 Replacement of Parts 14.29 Access to Switches and User Interface RETAINING For access, refer to section 14.1. LATCHES Release the front of the fascia by carefully prising up the two retaining latches, see diagram 14.20. Do not allow the front of the controls fascia to swing down and be loosely held by the electrical connections to the mainsreset switch, user interface and programmer.
  • Page 47 14 Replacement of Parts RETAINING REAR TORX 230V CONTROLS SLOTS PANEL SCREWS (3) INTERFACE BOARD RETAINING CONTROL STRAP MAIN PCB USER FUSE INTERFACE PCB RETAINING Diagram 14.22 Diagram 14.24 CLIPS 14.35 Fuse - Main PCB - Control Box SECURING SCREWS For access, refer to section 14.33.

  • Page 48: Spare Parts

    15 Spare Parts When ordering spare parts, contact Glow-worm’s own service organisation using the telephone number on the front cover of this booklet. Please quote the name of the appliance and serial number, to be found on the data label, see diagram 1.2.

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30sxi

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