Glow-worm 12 hx Installation And Servicing
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Glow-worm 12 hx Installation And Servicing

Condensing boilers
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Installation

and Servicing

Condensing Boilers/Flexicom hx
12 hx
G.C.No. 41-315-28
15 hx
G.C.No. 41-315-29
18 hx
G.C.No. 41-315-42
24 hx
G.C.No. 41-315-61
30 hx
G.C.No. 41-315-67
35 hx
G.C.No. 41-315-68

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  • Page 1: And Servicing

    Installation and Servicing Condensing Boilers/Flexicom hx 12 hx G.C.No. 41-315-28 15 hx G.C.No. 41-315-29 18 hx G.C.No. 41-315-42 24 hx G.C.No. 41-315-61 30 hx G.C.No. 41-315-67 35 hx G.C.No. 41-315-68...

  • 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 and labour.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS These instructions consist of, Installation, Servicing, Fault Finding, Replacement of Parts and Spares. 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: Warnings

    Glow- - Be physically capable worm. - Use safety clothing where appropriate, e.g. gloves, safety Any alteration not approved by Glow-worm, could invalidate footwear. the certifi cation, boiler warranty and may also infringe the Ensure safe lifting techniques are used current issue of the statutory requirements.

  • Page 5: Gas Supply

    Building Regulations, approved document L1 ( in the UK) and the following current issues of: 1) Central heating system specifi cation (CheSS) 2) Controls for domestic central heating system and hot water. BRECSU. 0020107230_04 - 12/14 - Glow-worm - 5 -...

  • Page 6: Boiler Design

    Please quote the name of the appliance, this infomation will be To obtain service, please call your installer or Glow-worm’s own on the name badge on the front of the appliance. service organisation using the telephone number on the inside If in doubt seek advice from the local gas company or Glow- front cover of this literature.

  • Page 7: Boiler Specifi Cation

    TECHNICAL DATA 1 Boiler Specifi cation 0020107230_04 - 12/14 - Glow-worm - 7 -...

  • Page 8: Boiler Dimensions And Hydraulic Schematic

    The general arrangment of the boiler is shown in diagram 2.1. and the hydraulic and gas schematic, diagram 2.2. The data label is positioned on the front of the inner casing panel. Diagram 2.1 0020107230_04 - 12/14 - Glow-worm - 8 -...

  • Page 9: Boiler Location, Clearances And Ventilation

    The boiler is room sealed so a permanent air vent is not required. 3.6 Cupboard or Compartment Ventilation Due to the high effi ciency and hence low casing temperature of this boiler, cupboard or compartment ventilation is not necessary. Leave existing air vents. 0020107230_04 - 12/14 - Glow-worm - 9 -...

  • Page 10: Evacuation Of Combustion Gas

    4.1 Regulation homeowner to check the fl ue outlet and clear visible insects from the terminal end. Only fl ue accessories supplied by Glow-worm H* and J* See diagram 4.2. These dimensions comply with must be used. the building regulations, but they may need to be increased to Different fl...
  • Page 11 (2) These dimensions comply with the building regulations, from surface or a boundary facing the terminal but they may need to be increased to avoid wall staining and nuisance from pluming depending on site conditions. 0020107230_04 - 12/14 - Glow-worm - 11 -...
  • Page 12 20 m Type Max length Each time an additional 90° bend is necessary (or 2 at 45°), the Ø 60/100 length (L) must be reduced by 1 m. Ø 80/125 20 m 0020107230_04 - 12/14 - Glow-worm - 12 -...
  • Page 13 6.91 8.33 11.17 14.10 16.39 Load (80C°/60°C) Exhaust temperature (ºC) At Min Thermal 33.2 33.2 33.2 33.2 33.2 36.0 Load (40C°/30°C) At Max Thermal 55.8 58.3 63.0 73.3 87.4 84.0 Load (80C°/60°C) 0020107230_04 - 12/14 - Glow-worm - 13 -...

  • Page 14: Water Systems 5

    (CHeSS). 5.6 Water Treatment 5.6.1 General The Glow-worm Flexicom range of boilers have an Aluminium alloy heat exchanger. Water treatment products used in the system should be suitable for use with Aluminium.
  • Page 15 fi ll the central heating system. Sealing agents - The addition of sealing agents to the system water is not permitted as this can cause problems with deposits left in the heat exchanger. 0020107230_04 - 12/14 - Glow-worm - 15 -...

  • Page 16: Domestic Hot Water Cylinder

    For GB: Guidance G17 to G24 and recommendation R17 to R24 of the Water Regulations Guide (for Scotland, the Water Byelaws 2000, Scotland). For IE: The current edition of I.S.813 “Domestic Gas Installations”. Diagram 5.3 0020107230_04 - 12/14 - Glow-worm - 16 -...

  • Page 17: Expansion Vessel

    fi ttings above the expansion vessel. and positioned so that any discharge can be seen. Diagram 5.4 0020107230_04 - 12/14 - Glow-worm - 17 -...

  • Page 18: Pressure Gauge

    Provision for fi lling the system at low level must be made, see diagram 5.5. There must be no permanent connection to the mains water supply, even through a non-return valve. Diagram 5.5 0020107230_04 - 12/14 - Glow-worm - 18 -...

  • Page 19: Installation Preparation

    If fl ue extension pipes are to be used then a core drill size of Diagram 6.2 125mm is required. This will allow the extension pieces to slope at 44mm/metre (2.5°) towards the boiler. 0020107230_04 - 12/14 - Glow-worm - 19 -...

  • Page 20: Boiler Fixing

    Lower the boiler slowly, push back and engage onto the hanging bracket making sure the boiler is located over the retaining bosses, secure with screw provided, see diagram 7.2. Diagram 7.2 0020107230_04 - 12/14 - Glow-worm - 20 -...

  • Page 21: Gas/Water And Appliance Connection

    BS6891 and in IE the current edition of I.S.813 “Domestic Gas Installations”. Water Connections Gas Connection Diagram 8.1 0020107230_04 - 12/14 - Glow-worm - 21 -...

  • Page 22: Condensate Connections

    Fitting an extra trap may cause the boiler siphon to work incorrectly. Refer to BS5546 or BS6798 for advice on disposal of boiler condensate. Diagram 9.1 0020107230_04 - 12/14 - Glow-worm - 22 -...
  • Page 23 INSTALLATION Diagram 9.2 0020107230_04 - 12/14 - Glow-worm - 23 -...

  • Page 24: Electrical Connection

    ● This appliance must be wired in accordance with these instructions. Any fault arising from incorrect wiring cannot be put right under the terms of the Glow-worm guarantee. ● All system components must be of an approved type. Electrical components have been tested to meet the equivalent requirements of the BEAB.

  • Page 25: Commissioning

    Sealed system only - fi ll the system to a pressure of Diagram 11.1 1.0bar. 2. Vent all air from the system - repeat as neccessary until the system is full and all the air has been vented. 0020107230_04 - 12/14 - Glow-worm - 25 -...

  • Page 26: Initial Lighting

    As an option, a chargeable boiler performance and function service can be provided by Glow-worm Service by calling 11.5 Check the Gas Inlet Pressure & Gas telephone No. 01773 828100.
  • Page 27 88.3 42.4 Health and Safety Executive. 84.8 1.12 38.9 ● Leave these instructions and the ‘Benchmark’ Installation, Commissioning and Service Record with the user. 0020107230_04 - 12/14 - Glow-worm - 27 -...

  • Page 28: Servicing 12

    NOTE: Adjustment is made by turning the gas valve throttle - 0.3 an ⅛ of a turn, waiting 1 minute to allow the appliance to stabilise before checking or making further adjustments. 0020107230_04 - 12/14 - Glow-worm - 28 -...

  • Page 29: Gas Rate Check

    CO/CO2 ratio is acceptable. Advice can be sought from the Glow-worm Technical Helpline. 12.1 Servicing NOTE: If the Combustion CO2, CO/CO2 ratio & Gas rate checks did not require adjustment then it will not be necessary to complete a full service.
  • Page 30 NOTE: The burner gasket should be inspected but will not need replacing unless there are signs of wear or damage. Follow the tightening sequence when re-fi tting the burner, see diagram 12.12. Diagram 12.6 0020107230_04 - 12/14 - Glow-worm - 30 -...
  • Page 31 MAINTENANCE Diagram 12.9 Diagram 12.7 Diagram 12.10 Diagram 12.8 Diagram 12.11 0020107230_04 - 12/14 - Glow-worm - 31 -...
  • Page 32 fi ll should be completed. level, see diagram 12.13. To clean the condense trap remove the sump and rinse with water. FAN CLAMPING BRACKET SECURING NUTS (6) BURNER Diagram 12.13 Diagram 12.12 0020107230_04 - 12/14 - Glow-worm - 32 -...

  • Page 33: Fault Finding

    See diagram 14.8 for available parameters. Diagram 13.3 13.5 Status Codes The status codes provide information about the current operating condition of the boiler and can be accessed through the diagnostic display, refer to diagram 13.7. 0020107230_04 - 12/14 - Glow-worm - 33 -...
  • Page 34 MAINTENANCE Diagram 13.4 0020107230_04 - 12/14 - Glow-worm - 34 -...
  • Page 35 MAINTENANCE Diagram 13.5 0020107230_04 - 12/14 - Glow-worm - 35 -...
  • Page 36 MAINTENANCE In all circumstances press the reset button to clear the fault. If the fault persists, consult the table below. FAULT CODES Diagram 13.6 0020107230_04 - 12/14 - Glow-worm - 36 -...
  • Page 37 State list - To access the state lists the ‘-’ button must be pressed for longer than 5 seconds until it begins to fl ash ‘S’ and then a number to indicate the state. The state numbers are given below. STATE LISTS Diagram 13.7 0020107230_04 - 12/14 - Glow-worm - 37 -...
  • Page 38 - buttons. Once the value has been changed it must be saved by holding the ‘MODE’ button for approximately 5 seconds. This will return to the diagnostic number selector. DIAGNOSTIC CODES - LEVEL 1 Installer Access Indicates read and write function - all other diagnostics are read only Diagram 13.8 0020107230_04 - 12/14 - Glow-worm - 38 -...

  • Page 39: Replacement Of Parts

    12.1, Combustion Check. After assembly test for gas tightness and purge in accordance with the current issue of BS6891or in IE, the current edition of I.S.813 “Domestic Gas Installations”. Diagram 14.1 0020107230_04 - 12/14 - Glow-worm - 39 -...

  • Page 40: Condensate Trap

    14.12 Heating Flow Thermistor Diagram 14.2 For access refer to section 14.1 Remove the silencer front, fan/gas valve assembly and fl ue hood for access. See relevant sections. Refer to diagram 14.2. 0020107230_04 - 12/14 - Glow-worm - 40 -...
  • Page 41 12.13. Drain the heat exchanger Drain the heat exchanger using the drain point on the right hand side of the heat exchanger, see diagram 14.4. Diagram 14.5 0020107230_04 - 12/14 - Glow-worm - 41 -...
  • Page 42 Check for any leaks. Vent all air from the system. Test for gas tightness, earth continuity, polarity, short circuit and resistance to earth. Light the boiler and carry out functional checks. Diagram 14.6 Diagram 14.7 0020107230_04 - 12/14 - Glow-worm - 42 -...
  • Page 43 MPORTANT: Support the control box whilst undoing the hinges. Remove the hinge securing screws accessed from beneath the boiler and remove the control box, see diagram 14.10. Diagram 14.9 Diagram 14.10 Diagram 14.8 0020107230_04 - 12/14 - Glow-worm - 43 -...

  • Page 44: Spare Parts

    Gas valve 12hx - 30hx H42724 0020059600 Gas valve 35hx H69002 0020020731 Spark Electrode H42720 0020020728 Burner 12hx - 30hx H42718 0020059601 Burner 35hx H68999 0020023826 User interface H42784 0020023825 Main P.C.B. H42783 Diagram 15.1 0020107230_04 - 12/14 - Glow-worm - 44 -...

  • Page 45: Manual Handling

    fl ooring, Recommend 2 persons unpack appliance from carton. Always keep lighting and other factors, and appropriate measures taken working area clear. Recommend cut base end of carton and open car- 0020107230_04 - 12/14 - Glow-worm - 45 -...
  • Page 46 Benchmark Commissioning and Servicing Section It is a requirement that the boiler is installed and commissioned to the completed in full. www.centralheating.co.uk © Heating and Hotwater Industry Council (HHIC)

  • Page 47: Gas Boiler System Commissioning Checklist

    GAS BOILER SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. CONTROLS Optimum start control Fitted...
  • Page 48 SERVICE RECORD It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed. Service Provider SERVICE 01 SERVICE 02 ² % ² % ² % ² % SERVICE 03 SERVICE 04 ² % ²...
  • Page 49 PRIOR TO CO AND COMBUSTION RATIO CHECK NOTE The boiler manufacturer’s installation instructions should have been followed, gas type verified and gas THE AIR GAS RATIO VALVE IS FACTORY supply pressure/rate checked as required prior to commissioning. SET AND MUST NOT BE ADJUSTED As part of the installation process, especially where a flue has been fitted by persons other than the DURING COMMISSIONING UNLESS THIS boiler installer, visually check the integrity of the whole flue system to confirm that all components are...
  • Page 52 GLOW-WORM Nottingham Road, Belper, Derbyshire. DE56 1JT www.glow-worm.co.uk © These instructions, or parts thereof, are protected by copyright and may be reproduced or distributed only with the manufacturer’s written consent.

This manual is also suitable for:

35 hx15hx18hx24hx30hx

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