Glow-worm 24cxi Instructions For Use Installation And Servicing
  1. Manuals
  2. Brands
  3. Glow-worm Manuals
  4. Boiler
  5. Ultracom 24cxi
  6. Instructions for use installation and servicing

Glow-worm 24cxi Instructions For Use Installation And Servicing

High efficiency condensing combination boilers
Hide thumbs Also See for 24cxi:
Table of Contents

Advertisement

Quick Links

See also: Installation and Servicing , Instructions for Use Manual

Instructions for Use

Installation and Servicing

24cxi
G.C. No. 47-047-23
30cxi
G.C. No. 47-047-24
38cxi
G.C. No. 47-047-27
High Efficiency
Condensing
Combination Boilers
To b e l e f t w i t h t h e u s e r
Glow-worm, Nottingham Road, Belper, Derbyshire. DE56 1JT
www.glow-worm.co.uk
0020008154A.02.05

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 24cxi and is the answer not in the manual?

Questions and answers

Related Manuals for Glow-worm 24cxi

Summary of Contents for Glow-worm 24cxi

  • Page 1: Instructions For Use

    To b e l e f t w i t h t h e u s e r 24cxi G.C. No. 47-047-23 30cxi G.C. No. 47-047-24 38cxi G.C. No. 47-047-27 High Efficiency Condensing Combination 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

    Any alteration not approved by Glow-worm, could invalidate the 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 for use as part of a sealed water central The condensate drain, see section 8.2, must not be modified or heating system with fully pumped circulation. The pump, blocked. expansion vessel and associated safety devices are all fitted Pluming from flue terminal within the 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 there is a duty using the telephone number on the inside front cover of this of care imposed on the owner of the property by the current 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 2. A tap extension tool is provided to facilitate this. Ensure the tap is closed. If the system repeatedly loses pressure, YOU MUST CONTACT YOUR INSTALLER OR GLOW-WORM'S OWN SERVICE ORGANISATION USING THE TELEPHONE NUMBER ON THE INSIDE FRONT COVER OF THIS BOOKLET.

  • Page 10: Technical Information

    1 Technical Information FLUE CENTRE LINE FLUE BOILER SAFETY DISCHARGE DRAIN THIS DIMENSION CAN BE INCREASED TO 600mm MAX. GENERAL ARRANGEMENT Diagram 1.1 1.1 IMPORTANT NOTICE The Health and Safety at Work Act, Control of Substances Hazardous to Health (COSHH). The boiler is supplied in one carton, which includes a fittings and documentation pack, see diagram 6.1.
  • Page 11 1 Technical Information TABLE 1 24cxi 30cxi 38cxi Lift Weight 41kg(90lb) 42kg(92.5lb) 44kg(97lb) Total Weight (installed) 44kg(97lb) 45kg(99lb) 47kg(103.5lb) ● Gas connection in BSPT) ● Heating and return 22mm copper ● Domestic hot water 15mm copper Safety valve Preset 3bar (43.5lbf/in...
  • Page 12 The data label is positioned on the inner door, refer to diagram 1.2. The Seasonal Efficiency Domestic Boilers UK (SEDBUK) is Class 'A' : 24cxi - 90.3%, 30cxi - 90.3% & 38cxi - 90.6%. SCHEMATIC LAYOUT OF BOILER Diagram 1.3 The value is used in the UK Government's Standard Assessment Procedure (SAP) for energy rating of dwellings.

  • 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 3.4 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 16: Heating System

    4 Heating System 4.1 General 4.3 Flow Rate The boiler is for use only with sealed central heating systems. If it is necessary to alter the flow rate, the system can be fitted with a lockable balancing valve in the main flow or return pipes The safety valve is an integral part of the boiler and it cannot be shown as valve "A"...

  • Page 17: Domestic Hot Water System

    10 bar. If the cold water supply pressure exceeds this, then a pressure-reducing valve must be fitted in the supply to The water flow rate is restricted to a maximum 8 l/min (24cxi) the boiler. 12 l/min (30cxi) and15.5 l/min (38cxi) by a restrictor fitted during boiler installation, see diagram 7.1.

  • Page 18: Installation Preparation

    6 Installation Preparation Remove the polystyrene end packing pieces then carefully lay 6.1 Appliance Pack 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 section on page 5.
  • Page 19 6 Installation Preparation 6.2 Wall Template 2.5° 44mm/metre Take the wall template from the fixing jig pack and place in the Inclined Extended desired position on a flat wall, giving due consideration to boiler flue length clearances, see section 2, and the flue you are fitting. 6.3 Flue Hole Cutting The standard horizontal flue is designed with an internal fall 90°...

  • Page 20: Gas/Water & Appliance Connection

    7 Gas/Water & Appliance Connection 7.1 System Connection 7.3 Water Connections Flush out the domestic hot water and the heating systems The system can now be connected without the boiler being before connecting to the boiler. mounted. All water and gas connections are on the fixing jig with the exception of the condense drain and safety discharge, the Make the connections to the domestic hot water and heating positions of these are shown on the wall template.

  • Page 21: Safety Discharge Valve And Condensate Connection 8

    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 Take the short safety discharge tube, union nut and seal, supplied loose in the boiler fittings pack and fit as shown in diagram 8.1 This must be extended, using not less than 15mm o.d.
  • Page 22 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 23: 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 24 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 25 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 26: 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 27 10 Electrical Connection 10.3 Mains Voltage System Controls CABLE WARNING: UNDER NO CIRCUMSTANCES MUST ANY EXIT MAINS VOLTAGE BE APPLIED TO ANY OF THE TERMINALS ON THE VOLTAGE FREE HEATING CONTROLS MAINS CONNECTION PLUG. CABLE Remove the MAINS VOLTAGE HEATING CONTROLS CONNECTION PLUG from the fittings pack and install on the control interface PCB as follows.

  • Page 28: Commissioning

    11 Commissioning Please ensure the "Benchmark" logbook is completed and left The water flow rate is restricted to a maximum 10 l/min (24cxi) with the user and the magnetic lighting instruction label is 12 l/min (30cxi) and15.5 l/min (38cxi) by a restrictor fitted during placed on the surface of the boiler casing.
  • Page 29 7.1. and pilot lights are off. 11.4 Initial Lighting The approximate gas rates: 24cxi : 2.24m /h (79ft 30cxi : 2.8m /h (99ft The lighting procedure of the boiler is fully automated.
  • Page 30 11 Commissioning 11.7 Completion ADJUSTMENT Adjust the boiler temperature control and any system controls SCREW to their required settings. In addition it is necessary to complete the "Benchmark" logbook. BYPASS VALVE For IE, it is necessary to complete a "Declaration of Conformity" to indicate compliance to I.S.813.

  • Page 31: Servicing 12

    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 COMBUSTION parts that have not been clearly authorised by Glow-worm. ANALYSER TEST POINT 12.1 General Refer to Table 2 Section 1 Technical Information.

  • Page 32: Servicing

    12 Servicing Withdraw the gas pipe from gas valve connection and remove. OFFSET NOTE: When replacing ensure that the sealing grommet, ADJUSTMENT situated below the gas valve is correctly re-seated. Disconnect the gas valve electrical plug at the gas valve. Disconnect the electrical leads from the fan.

  • Page 33: Combustion Check

    In the fully clockwise position the display should be indicating the maximum fan speed of the appliance, in central heating mode this should be 39±1 for 24cxi, 45±1 for 30cxi and 45±1 for 38cxi. With domestic hot water max. demand this should be 51±1 for 24cxi, 57±1 for 30cxi and 57±1 for 38cxi.
  • Page 34 12 Servicing 12.7 Domestic Cold Water Inlet Filter RETAINING CLIP FIXING JIG If the water flow rate through the appliance has reduced it may be necessary to clean or replace the water inlet filter. Turn off the electrical supply to the boiler. Refer to section 12.10 and drain the domestic hot water circuit.

  • Page 35: Fault Finding

    13 Fault Finding NOTE Before trying to operate the boiler make sure that : • 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 13 Fault Finding MAINS VOLTAGE HEATING CONTROLS PLUG REMOVE VOLTAGE FREE LINK 230V SWITCHED LIVE FROM OPTIONAL FROST STAT. 230V SWITCHED LIVE FROM HEATING CONTROLS. CONTROLS VOLTAGE FREE INTERFACE HEATING CONTROLS PLUG LINK REMOVE THE LINK IF FITTING VOLTAGE FREE OR 230V SYSTEM CONTROLS.
  • Page 37 13 Fault Finding Diagram 13.2 0020008154A...
  • Page 38 13 Fault Finding Diagram 13.3 0020008154A...

  • Page 39: Replacement Of Parts

    14 Replacement of Parts 14.1 General IGNITER UNIT SECURING Replacement of parts must be carried out by a competent SCREWS (2) person. SPADE Before replacing any parts the boiler should be isolated from the CONNECTOR mains electric supply and the gas should be turned off at the service cock on the boiler, see diagram 7.1.
  • Page 40 Refer to section 12.3 for removal of the fan, gas valve and SCREW (3) Diagram 14.3 burner assembly. Remove the four screws that secure the burner, see diagram 24cxi Illustrated 14.5. NOTE: THE BURNER WILL REQUIRE A NEW GASKET WHEN REFITTED. MANIFOLD...
  • Page 41 14 Replacement of Parts 14.10 Viewing Window 14.8 Front Insulation For access, refer to section 14.1. For access, refer to section 14.1. Refer to diagram 14.7. Refer to section 12.3 for removal of the fan, gas valve and burner assembly. Remove circlip.

  • Page 42: Securing Screw

    14 Replacement of Parts 14.12 Heat Exchanger FLOW AND SECURING SCREWS RETURN PIPE Refer to Manual Handling section on page 5. AND CLAMPS NUTS For access, refer to section 14.1. Refer to section 12.3 for removal of the fan, gas valve and burner assembly.
  • Page 43 14 Replacement of Parts 14.15 Pump (head only) CAP HEAD SCREW (4) For access, refer to section 14.1. Refer to section 12.9 and drain the boiler heating circuit. Refer to diagram 14.12. Remove the four cap head screws. Carefully remove the pump head together with cable. Do not strain cable.

  • Page 44: Overheat Thermostat

    14 Replacement of Parts 14.20 Overheat Thermostat 14.24 Bypass For access, refer to section 14.1. For access, refer to section 14.1. Refer to section 12.9 and drain the boiler heating circuit. Refer to diagram 14.15. Refer to diagram 14.19. Remove the electrical connections from the overheat thermostat. Remove the retaining clips to remove the bypass tube.
  • Page 45 14 Replacement of Parts 14.25 Filling Loop Tube FLOW RETAINING For access, refer to section 14.1. SENSOR CLIP Refer to section 12.10 and drain the boiler hot water circuit. Refer to diagram 14.20. Remove the retaining clips to remove the filling loop tube. Fit new 'O' rings.
  • Page 46 14 Replacement of Parts 14.31 Heating Circuit Drain Point RETAINING Refer to section 12.9 to drain the boiler heating circuit. CLIPS Refer to diagram 14.22. Remove the retaining clip to remove the drain point. Fit new 'O' rings. Replace the drain point, refill, vent and pressurise the boiler. Check for leaks.

  • Page 47: Securing Screw

    14 Replacement of Parts FLOW PIPE PLATE TO PLATE HEAT OUTLET CONNECTOR EXCHANGER SECURING CONNECTOR HYDROBLOCK SCREW SAFETY DISCHARGE VALVE LH VIEW PLATE TO PLATE HEAT SECURING SECURING HYDROBLOCK EXCHANGER SECURING CLIP 3 CLIP 2 SCREW SECURING SECURING CLIP 1 CLIP 4 Diagram 14.23 14.34 Plate-to-Plate Heat Exchanger...
  • Page 48 14 Replacement of Parts 14.35 Hydroblock Assembly Left-Hand 14.37 Hydroblock Assembly Right-Hand Refer to section 12.9 to drain the boiler heating circuit. For access, refer to section 14.1. Refer to section 12.10 and drain the boiler hot water circuit. Refer to section 12.9 to drain the boiler heating circuit. Refer to diagram 14.23.
  • Page 49 14 Replacement of Parts 14.38 Access to Switches, User Interface and Programmer RETAINING For access, refer to section 14.1. SLOTS Release the front of the fascia by carefully prising up the two TORX retaining latches, see diagram 14.26. SCREWS (3) Do not allow the front of the fascia to swing down and be loosely held by the electrical connections to the mains/reset switch, user interface and clock.
  • Page 50 14 Replacement of Parts 14.43 Main PCB 230V CONTROLS RETAINING INTERFACE BOARD For access, refer to section 14.1. SCREW Hinge down the control box. Remove TORX screws and unhook the rear panel. Remove the electrical connections to the PCB. Prise back the two PCB retaining clips and withdraw the PCB, see diagram 14.26.

  • Page 51: Spare Parts

    15 Spare Parts Please quote the name of the appliance and serial number, to When ordering spare parts, contact Glow-worm's own service be found on the data label. organisation using the telephone number on the inside front cover of this booklet.
  • Page 52 15 Spare Parts Diagram 15.1 Because of our constant endeavour for improvement, details may vary slightly from those shown in these instructions. 0020008154A...

This manual is also suitable for:

30cxi38cxi47-047-2347-047-2447-047-27

Table of Contents

Save PDF