Glow-worm 12hxi Instructions For Use And Installation
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Glow-worm 12hxi Instructions For Use And Installation

High efficiency condensing boilers
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See also: Instructions for Use Manual , Installation and Servicing Manual
0020008153A.02.05

Instructions for Use

Installation and Servicing

To b e l e f t w i t h t h e u s e r
12hxi 15hxi
G.C. No. 41-047-74
G.C. No. 41-047-73
18hxi 24hxi
G.C. No. 41-047-63
G.C. No. 41-047-69
30hxi 38hxi
G.C. No. 41-047-71
G.C. No. 41-047-64
High Efficiency
Condensing Boilers
Glow-worm, Nottingham Road, Belper, Derbyshire. DE56 1JT
www.glow-worm.co.uk

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  • Page 1: Instructions For Use

    To b e l e f t w i t h t h e u s e r 12hxi 15hxi G.C. No. 41-047-74 G.C. No. 41-047-73 18hxi 24hxi G.C. No. 41-047-63 G.C. No. 41-047-69 30hxi 38hxi G.C. No. 41-047-71 G.C. No. 41-047-64 High Efficiency Condensing Boilers 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

    Normal handling should not cause discomfort, but follow normal by Glow-worm. good hygiene and wash your hands before eating, drinking or Any alteration not approved by Glow-worm, could invalidate the going to the lavatory. certification, boiler warranty and may also infringe the current If you do suffer irritation to the eyes or severe irritation to the skin issue of the statutory requirements.

  • Page 5: General Information

    General Information General Note Condensate Drain This boiler is designed to provide central heating from a fully The condensate drain, see section 7.3, must not be modified or pumped open-vented or sealed water system with a fully blocked. indirect cylinder. Pluming from flue terminal Once the controls are set the boiler operates automatically.
  • 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

    If replacement parts are required contact Glow-worm’s own destination. service organisation using the telephone number on the inside To obtain service, please call your installer or Glow-worm’s own front cover of this booklet. service organisation using the telephone number on the inside Please quote the name of the appliance, this infomation will be front cover of this 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

    Glow-worm. be converted for use on G31 gas (Propane L.P.G.). Any alteration that is not approved by Glow-worm, could Where no British Standards exists, materials and equipment invalidate the warranty and could also infringe the current issue should be fit for their purpose and of suitable quality and of the Statutory Requirements.
  • Page 10 1 Technical Information MAX. 113.5 MIN. INSIDE WALL FIXING FACE CONDENSATE DRAIN CONDENSATE DRAIN Diagram 1.1 1.3 Gas Supply TABLE 1 The gas installation shall be in accordance with the relevant 12 hxi = 30kg standards. 15 hxi = 30kg In GB this is BS6891.
  • Page 11 1 Technical Information TABLE 2 (cont'd) TABLE 2 12 hxi 30 hxi Case Off 9.1 +0.2 -0.5 BURNER Case Off 9.1 +0.2 -0.5 BURNER Case On 9.3 +0.3 -0.5 Case On 9.3 +0.3 -0.5 0.53 1.29 0.56 3.02 APPROXIMATE APPROXIMATE GAS RATE GAS RATE (after 10 mins.
  • Page 12 1 Technical Information Diagram 1.2 0020008153A...

  • Page 13: Boiler Location And Ventilation

    Institute of Gas Engineers document IGE/UP/7/1998. If in doubt seek advice from the local gas undertaking or Glow-worm. 2.4 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 14: 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 15 3 Flue Location and Ventilation 3.3 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 16: Water System

    4 Water System Diagram 4.1 0020008153A...

  • Page 17: Draining Tap/Pump/Flow Rate

    4 Water System 4.1 Draining Tap Table 3. Flow Rate A draining tap must be provided at the lowest point of the MODEL MINIMUM FLOW RATE system, which will allow the entire system and hot water system to be drained. 12 hxi 520 litres/hr Draining taps shall be to the current issue of BS 2879.
  • Page 18 4 Water System 3 LITRES (0.66 gals) FLOW MAKE-UP BOTTLE CONTROL RELEASE (if required) VALVE 'A' POINT AUTO VENT NON-RETURN FILLING POINT BY-PASS VALVE VALVE 'B' IF REQUIRED FLOW CIRCULATING FLOW SAFETY PUMP CONTROL VALVE VALVE 'A' RETURN PRESSURE GAUGE (Make-up alternatives) BOILER...
  • Page 19 4 Water System 4.16 Water Makeup 4.10 Domestic Hot Water System - unvented Provision should be made for replacing water loss from the General - All domestic hot water circuits, connections, fittings system using a make up bottle mounted in a position higher than must be in accordance with the relevant standards and water the top point of the system, connected through a non-return supply regulations.

  • Page 20: Installation Preparation

    5 Installation Preparation 5.1 Appliance Pack RETAINING IMPORTANT: With regards to the Health and Safety Manual (2 OFF) Handling requirements, two persons shall be required to lift the SECURING appliance, refer to manual handling on page 5. SCREW (2 OFF) NOTE: The fittings pack is located in the base polystyrene packing under the boiler base.

  • Page 21: Boiler Fixing

    6 Boiler Fixing 6.1 Hanging Bracket Fixing WALL If previously removed, reposition the wall template over the flue TEMPLATE hole and mark the position of the fixing holes for the hanging bracket, see diagram 6.1. Mark and drill the fixing holes and secure the hanging bracket, which is supplied in the polystyrene pack.

  • Page 22: Gas, Water And Condensate Conns. 7

    7 Gas, Water and Condensate Connections GAS SERVICE COCK SHOWN IN OPEN POSITION UNION CONNECTOR GAS SERVICE COCK LINER SPIGOT SERVICE COCK PLASTIC OVERFLOW PIPE CONDENSATE DRAIN SUPPLY PIPE IN CONNECTION Diagram 7.1 7.1 Gas Connection Before connection check the supply of local gas. The gas supply can be connected from below, see diagram 7.1.
  • Page 23 7 Gas, Water and Condensate Connections 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 SINK...

  • Page 24: Flue Preparation Telescopic And Standard Flue

    8.1 Flue Components conditions, see diagram 8.2. The components supplied in the Standard and Telescopic kit The Glow-worm Flue Options Guide, available on request or are shown in diagram 8.1. through the web site, describes in detail the necessary accessories.
  • Page 25 8 Flue Preparation Telescopic and Standard Flue 8.2 Flue Length Top Side flue - Standard - with the flue elbow temporarily fitted, measure the distance from the outside wall to the butt joint, see Top Rear flue - Telescopic - with the flue elbow temporarily diagram 8.5.
  • Page 26 8 Flue Preparation Telescopic and Standard Flue 8.2 (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 27: Electrical Connections

    Any fault arising from incorrect wiring cannot be 1. Test insulation resistance to earth of mains cable. put right under the terms of the Glow-worm guarantee. 2. Test the earth continuity and short circuit of cables. All system components must be of an approved type.

  • Page 28: Commissioning

    As an option a chargeable boiler only commissioning service carefully adjust the offset screw until a CO reading can be provided by Glow-worm Service by calling telephone of 10.5% ± 0.2% is achieved. Turning the offset No. 01773 828100. screw clockwise increases the CO reading.
  • Page 29 10 Commissioning 10.1 Preliminaries - All Systems INNER Remove inner casing panel, see diagram 10.1. CASING A competent person in accordance with the current issue of PANEL CASING BS6798 should carry out commissioning. PANEL Make sure that the system has been thoroughly flushed out with cold water.
  • Page 30 20 C can be achieved across flow and return. The approximate gas rates: 12hxi : 1.29m /h (45.6ft Allow the system to reach maximum temperature then switch 15hxi : 1.61m /h (57ft off the boiler by isolating from the electrical supply.

  • Page 31: Servicing

    11 Servicing Important Notes SEALING GAS PIPE BRACKET GROMMET SECURING SCREW To ensure the continued efficient and safe operation of the boiler it is recommended that it is checked and serviced at regular intervals. The frequency of servicing will depend upon the particular installation and usage, but in general once a year CONDENSE should be enough.

  • Page 32: Servicing

    11 Servicing 11.3 Burner NOTE: IF THE BURNER HAS TO BE REMOVED IT WILL REQUIRE A NEW GASKET WHEN REFITTED. Refer to diagrams, 11.2,11.3,11.4 and 11.5. When replacing the assembly ensure the sealing grommet is Isolate the gas supply at the gas service cock. correctly fitted.
  • Page 33 In the fully clockwise position the display should be indicating the maximum fan speed of the appliance, (27±1 for 12hxi, 32 ±1 for 15hxi, 41±1 for 18hxi, 47±1 for 24hxi and 57±1 for 30hxi and 38hxi). Check the CO value, which should be 9.1% +0.2 -0.5.
  • Page 34 11 Servicing FRONT FLUE ELBOW CASING INNER PANEL CASING PANEL COMBUSTION ANALYSER TEST POINT FLUE DUCT EXTENSION Diagram 11.6 SEAL RETAINING LATCHES Diagram 11.8 11.7 Inner Casing Panel Seal Check. Refer to diagram 11.8. Check the condition of the seal, replace as required. To replace remove the old seal, thoroughly clean the casing surfaces.

  • Page 35: Fault Finding

    12 Fault Finding NOTE RETAINING Before trying to operate the boiler make sure that : STRAP • 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 36 12 Fault Finding Diagram 12.2 0020008153A...
  • Page 37 12 Fault Finding Diagram 12.3 0020008153A...
  • Page 38 12 Fault Finding Diagram 12.4 0020008153A...

  • Page 39: Replacement Of Parts

    Remove ignition lead and electrical connections, see diagram specification that we require. Do not use reconditioned or copy 11.4. parts that have not been clearly authorised by Glow-worm. Remove igniter unit by removing two securing screws. Replacement of parts must be carried out by a competent person.
  • Page 40 13 Replacement of Parts 13.5 Gas Valve MANIFOLD For access, refer to section 13.1. Remove the electrical plug from the gas valve, see diagram 10.3. SECURING Refer to section 11.3 for removal of the fan, gas valve and burner assembly. SCREW Before removing the gas valve note its position on the fan.
  • Page 41 13 Replacement of Parts 13.10 Viewing Window For access, refer to section 13.1. FLOW AND Refer to diagram 13.4. RETURN Remove circlip. PIPE NUTS Remove steel washer. Remove glass. Remove fibre washer. SECURING Replace in reverse order. SCREWS 13.11 Heat Exchanger CLAMPS Refer to Manual Handling section on page 5.
  • Page 42 13 Replacement of Parts 13.15 Overheat Thermostat SIPHON For access, refer to section 13.1. ADAPTER Refer to diagram 13.7. FLOAT Remove the electrical connections from the overheat thermostat. Remove the retaining clip from the flow pipe. CONDENSE Remove the overheat stat from the retaining clip. TRAP SCREW NOTE: When fitting new thermostat, please ensure that it is...
  • Page 43 13 Replacement of Parts 13.20 Mains Reset Knob Refer to section 13.18 for access. Remove actuator by springing back retaining clips. RETAINING Spring back knob retaining clips and push knob out from the STRAP back, see diagram 13.9. 13.21 User Interface Refer to section 13.18 for access and diagram 13.10.

  • Page 44: Spare Parts

    14 Spare Parts When ordering spare parts, contact Glow-worm’s own service organisation using the telephone number on the inside 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.

This manual is also suitable for:

15hxi24hxi30hxi18hxi38hxi

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