Glow-worm SwiftFlow 125 Instructions For Use Manual
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Glow-worm SwiftFlow 125 Instructions For Use Manual

Glow-worm SwiftFlow 125 Instructions For Use Manual

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Installation and Servicing
125 electronic
G.C. No. 47 313 19
Fanned Flue Combination Boiler
This is a Cat I
The instructions consist of three parts, User, Installation and Servicing Instructions, which includes the Guarantee Registration Card.
The instructions are an integral part of the appliance and must, to comply with the current issue of the Gas Safety (Installation and Use)
Glow-worm appliances' are manufactured to the very highest standard so we are pleased offer our customers'
In the center pages are to be found your Guarantee Registration Card, which we recommend you complete
If this card is missing you can obtain a copy or record your registration by telephoning the
Our Guarantee gives you peace of mind plus valuable protection against breakdown by covering the cost of:
All replacement parts
All labour charges
All call-out charges
One Contact Local Service
Supplied By www.heating spares.co Tel. 0161 620 6677
Instructions for Use
To b e l e f t w i t h t h e u s e r
Appliance
2H
Regulations, be handed to the user on completion of the installation.
Guarantee Registration
Thank you for installing a new Glow-worm appliance in your home.
a Comprehensive First Year Guarantee.
and return as soon as possible.
Heatcall Customer Service number 01773 828100.
Customer Services:
Tel: (01773) 828100
Fax: (01773) 828070
REGISTER YOUR GLOW-WORM APPLIANCE
FOR 1ST YEAR GUARANTEE PROTECTION
CALL 0181 380 2555
Nottingham Road, Belper, Derbyshire. DE56 1JT
General/Sales enquiries:
Tel: (01773) 824141 Fax: (01773) 820569
221474C.02.00
Hepworth Heating Ltd.,

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Summary of Contents for Glow-worm SwiftFlow 125

  • Page 1 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 offer our customers' a Comprehensive First Year Guarantee. In the center pages are to be found your Guarantee Registration Card, which we recommend you complete and return as soon as possible.

  • Page 2: Table Of Contents

    Important Information Testing and Certification This boiler is tested and certificated for safety and performance. It is therefore important that no alteration is made to the boiler, without permission, in writing, from Hepworth Heating Ltd. Any alteration not approved by Hepworth Heating Ltd., could invalidate the certification, boiler warranty and may also infringe the current issue of the Statutory Requirements, see Section 1.4.

  • Page 3: Introduction

    Instructions for Use Introduction adjacent to the appliance. Please read these instructions and follow them carefully for the safe It should be identified as to its use. and economical use of your Combination boiler. A fused three pin plug and shuttered socket outlet may be used This boiler must have been installed by a competent person in instead of the fused spur box.

  • Page 4: Setting The Clock

    Instructions for Use Setting Instructions for Electro/mechanical Setting the Clock Clock - if fitted 1. With both AUTO and RUN switches set to the central position, press R reset button, the display will flash. This clock has a twenty four hour dial, that is, 1pm is 13. 2.

  • Page 5: To Turn The Boiler Off

    Instructions for Use User Indicator Lights To Turn the Central Heating Off Identify the lights be reference to diagram 3. To turn the heating off for short periods, set switch “C” to “Off” as shown in diagram 3 and make sure all the domestic hot water draw The Orange - Mains light - shows that the electrical supply to the off taps are closed.
  • Page 6 Instructions for Use Pressure Relief Safety Valve WATER COLD WATER HEATING CAUTION. A pressure relief safety valve and discharge pipe is SUPPLY IN RETURN fitted to the boiler. This valve must not be touched. Should there be any discharge from the pipe, turn the boiler off, isolate from the HEATING electrical supply and contact your installation/servicing company.

  • Page 7: General Data

    1 General Data 1.1 Important Notice 1.5 Data Label This boiler is for use only on natural gas (G20). The data label is on the inner case cover. 1.2 Sheet Metal Parts 1.6 Data WARNING. When installing the boiler, care should be taken to See Tables 1 and 2.
  • Page 8 1 General Data 13 - Safety Valve Discharge 1 - Heat Exchanger 14 - Water Throttle 2 - Main Burner 15 - Mini Expansion Vessel 3 - Ignition Electrode 16 - Flow Sensor 4 - Automatic Air Vent 17 - Multi-Functional Control 5 - Expansion Vessel incorporating Gas/Air 6 - Pump...

  • Page 9: Boiler Position

    2 Boiler Position 2.1 Boiler Position The boiler must be installed in accordance with the rules in force of the countries of destination. The boiler is not suitable for outside installation. Any electrical switch or boiler control using mains electricity must be positioned so that it cannot be touched by a person using a bath or shower.

  • Page 10: Flue And Ventilation

    3 Flue and Ventilation 3.1 Flue WALL THICKNESS ‘X’: 75 to 400mm The flue must be installed in accordance with the rules in force in the countries of destination. For UK, see current issue of BS5440 Part 1. “X” 3.2 Flue Position and Length The air and flue ducting connect to the top of the boiler using a flue elbow and can be positioned in one of three directions: rearward, left or right.
  • Page 11 3 Flue and Ventilation 3.4 Terminal Guard A terminal guard is required if persons could come into contact with the terminal or the terminal could be subject to damage. If a terminal guard is required, it must be positioned to provide a minimum of 50mm clearance from any part of the terminal and be central over the terminal.

  • Page 12: Heating System

    4 Heating System Btu/h x1000 ˚C ˚F FEET ACCEPTABLE DIFFERENTIAL RANGES 35 Litres/Min Gallons/Min Diagram 4.1 FLOW RATE 4.1 General Notes it is permissible to adjust the pump to a lower setting (2). See diagram 4.1. The boiler is for use in sealed water systems only. To use diagram 4.1 start with the required heating system load.

  • Page 13: Domestic Hot Water System

    4 Heating System 4.9 Filling Sealed Systems 4.11 Draining Tap Provision for filling the system at a low level must be made. A draining tap must be provided at the lowest points of the system, Three methods of filling are shown in diagram 4.3. There must be which will allow the entire system to be drained.

  • Page 14: Appliance And Flue Preparation

    6 Appliance and Flue Preparation 6.3 Flue Hole Cutting 6.1 Unpacking Having marked out the flue centre, cut a hole for the flue, using, Remove the top carton and cut out the flue template from the inner preferably, a 130mm minimum core drill. flap.
  • Page 15 6 Appliance and Flue Preparation 6.4 Wall Sleeve 6.5 Boiler Mounting Frame Fixing Note: If required, an optional Wall Liner Kit, Part No. 900861, is Position the flue template over the flue hole and check the position available, complete with fixing instructions. of the wall fixing points.

  • Page 16: Flue Preparation

    7 Flue Preparation 7.1 Flue Length For a rear flue, measure the distance from the outside wall face to "X" the boiler mounting wall. Check that the flue length will be suitable, BOILER OUTSIDE see diagram 3.1 for a standard flue system or diagram 3.3 for a 2 MOUNTING WALL or 3metre flue system.
  • Page 17 7 Flue Preparation 7.6 Internal Flue Assembly AIR DUCT/ TERMINAL FOAM Note: This requires the use of the internal flue installation kit. SEAL Place the flue assembly into the flue hole to make sure that the flue terminal is correctly positioned and is the correct distance from the outside wall face, see diagram 7.6 and the appropriate diagram 7.1 or 7.2.

  • Page 18: Gas And Water Connections

    8 Gas and Water Connections 8.1 Gas Connection ‘NOTCH’ MARKING POSITION OF BOILER SAFETY VALVE DISCHARGE MOUNTING The gas supply can be connected from below or through the wall FRAME at the rear of the boiler, see diagram 8.1 for position. Refer also to Section 1.7.

  • Page 19: Electrical Connections

    9 Electrical Connections TO BOILER INTEGRAL CLOCK EXTERNAL CLOCK TO BOILER RED LINK. 5 POLE CONNECTOR ON 5 POLE CONNECTOR ON REMOVE WHEN MOUNTING FRAME MOUNTING FRAME CONNECTING ANY HEATING SYSTEM CONTROLS (3) (L) (3) (L) LINK MAINS POTENTIAL FROST STAT. SWITCH CONTACTS CLOCK...

  • Page 20: Boiler Fixing

    9 Electrical Connections 9.1 Supply Cable Connection The boiler requires a permanent mains supply through an isolator which must also isolate any heating system controls, see diagram RED LINK 9.1. Remove when connecting any Any heating system controls must not interrupt the permanent heating system mains supply to the boiler.
  • Page 21 10 Boiler Fixing 10.4 Gas and Water Connections WALL FACE WALL Locate the boiler water pipes into the isolation valves and the gas SLEEVE service into the gas cock union halves. FLUE ELBOW Make the compression joint on the isolating valves and join the gas service cock union.

  • Page 22: Commissioning

    10 Boiler Fixing SAFETY SUPPORT VALVE BRACKET SEALING WASHER PRESSURE GAUGE CONNECTION SECURING SCREW (2) PRESSURE GAUGE BRACKET PRESSURE GAUGE Diagram 10.5 UNION CONNECTION DISCHARGE PIPE Diagram 10.4 ‘NOTCH’ Diagram 10.6 11 Commissioning 11.1 Filling Domestic Water Circuit WARNING. Several components operate on mains voltage and with THE OUTER CASE REMOVED THEY BECOME EXPOSED.
  • Page 23 11 Commissioning 11.3 Preparation for Lighting Half open a hot water draw off tap and the main burner will light at minimum gas rate. Isolate the boiler from the mains electrical supply at the external Check that the burner pressure is 1.2mbar +/-0.2mbar. If this is isolator.

  • Page 24: Heating System Commissioning

    11 Commissioning Fully open a hot water draw off tap. 11.9 Heating System Commissioning Check that the burner pressure is 16.8mbar. If this is incorrect, it Check that all remote system controls and integral clock are calling may be adjusted by turning the hot water gas pressure potentiometer for heat.
  • Page 25 11 Commissioning 11.10 Completion DOMESTIC HOT WATER The user control door is designed for left or right hand hinging. If THROTTLE required the hinge can be moved to the other side to that supplied, as follows: Remove the hinge pin bracket securing screw then remove the hinge pin retaining bracket and, holding the door, remove the hinge pin.

  • Page 26: General Data

    1 General Data 1.1 Servicing or Replacing Parts 1.6 System Pressures and Draining To ensure the continued efficient and safe operation of the boiler it WARNING. All parts containing water of the central heating circuit is recommended that it is checked and serviced as necessary at within the boiler, are under the system pressure.

  • Page 27: Servicing

    2 Servicing 2.2 Isolation and Access FAN OUTLET SEAL Before starting, refer to Section 1.1. PLUG Isolate the boiler from the electrical supply and close the gas service cock, refer to Section 1.3. SECURING Remove the outer case and the inner case cover, refer to Sections SCREWS 1.4 and 1.5.
  • Page 28 2 Servicing 2.6 Service Checks Before replacing any parts removed during servicing, inspect the condition of all seals and joints, renewing them as necessary. +0.5 +0.5 +0.5 -0.5 -0.5 Check the condition of the combustion chamber insulation. -0.5 Check that the spark and sensing gaps are as shown in diagram 2.3.
  • Page 29 2 Servicing SPARK EARTH ELECTRODE ELECTRODE BURNER BURNER WING NUT BRACKET BURNER GUIDE SECURING SCREW MAIN INJECTOR SENSING LEAD Diagram 2.4 221474C Supplied By www.heating spares.co Tel. 0161 620 6677...

  • Page 30: Fault Finding

    3 Fault Finding 3.1 Initial Checks On completion of a fault finding task that has required the disconnection and making of electrical connections then checks, If the boiler fails to operate, first check the following: for earth continuity, polarity and resistance to earth must be carried out.
  • Page 31 3 Fault Finding PERMANENT LIVE 230V~50Hz OPTIONAL SWITCHED LIVE FROM ROOM STAT. 230V~50Hz COMMON CLOCK/TIMER CONTROL BOARD TERMINALS CONTROL BOARD TERMINALS, BLOCK 3 CONTROL BOARD TERMINALS, BLOCK 2 FUSE PUMP VOLT 230V~ 28V~ TRANSFORMER RESET / NVLO INDICATOR 3a 4b p or white 12 11 10 9...
  • Page 32 3 Fault Finding CVI IGNITION UNIT 230V~ TRANS- WATER PRESSURE FORMER 26V~ SWITCH (SHOWN IN PRESSURISED TO REMOTE STATE) HEATING CONTROL 5 WAY PLUG/SOCKET SELECTOR FLOW SWITCH SENSOR THERMISTOR USER CONTROL THERMISTOR BOARD FAN DRIVER P.C.B. CONTROL BOARD p g y b gry w r Screen MAIN PCB FAN DRIVER PCB...
  • Page 33 3 Fault Finding Carry out initial Fault Finding checks described in Section 3.1 and 3.4. Check that gas, water and electricity are available at the boiler. Before starting the test, isolate the boiler from the electrical supply, ensure that the remote controls are not calling for duty.
  • Page 34 3 Fault Finding start Apply CH Does red Reset lockout demand. lockout light? switch. Is there continuity across Does fan run yellow & black at ignition rate? on WPS? Is there a spark Faulty water at electrode? pressure switch. Replace Is there 300Vdc Is ignition Is there 230Vac...
  • Page 35 3 Fault Finding Switch off CH Has CH Is DHW thermistor demand.Switch overheat gone 10k ohms cold? on DHW. open circuit? Does boiler go into ignition sequence? Faulty DHW Faulty sense thermistor. electrode. Is CH thermistor resistance correct 10k ohms cold 1.6k ohms hot? Is the Vdc on CN4 Does boiler...
  • Page 36 3 Fault Finding If mains potential room thermostat is connected, make sure that the switch live is connected If mains potential room thermostat is connected, ensure that the switch live is connected to to Pin 1 in the 5 pole connector. Pin 1 in the 5 pole connector.

  • Page 37: Replacement Of Parts

    4 Replacement of Parts Note. There is no need to remove the fan or flue collector Before replacing any part please read points below:- assemblies. Replacement of parts must only be carried out by a competent person. 4.3 Main Injector Unless stated otherwise all parts are refitted in the reverse order to Refer to the appropriate parts of Section 2.2.

  • Page 38: Water Pressure Switch

    4 Replacement of Parts 4.7 Sensing Lead SECURING SCREW (2) Remove main burner as described in Section 4.2. Disconnect the lead from sensing electrode. Disconnect lead at the ignition unit on gas valve. USER Slacken sealing angle and withdraw lead. CONTROL SWITCH Refer to diagram 4.13.
  • Page 39 4 Replacement of Parts 4.12 Boiler Protection Thermostat Remove the pump, see Section 4.11. Disconnect the electrical connectors at the domestic hot water high limit control, see diagram 4.6. Remove the high limit control from the flow pipe, secured with two screws.
  • Page 40 4 Replacement of Parts 4.15 Transformer FASCIA FASCIA TEMPERATURE SECURING CONTROL KNOB Note. Timer/clock may be removed to improve access, see Section SCREW (3) 4.32 or the control housing bottom half can be removed. Remove the control housing cover screw, see diagram 4.8. CONTROL HOUSING Remove control housing assembly, see diagram 4.1.
  • Page 41 4 Replacement of Parts screened DRIVER BOARD GAS VALVE or y L N E 4 5 6 7 8 IGNITION UNIT BOILER OVERHEAT CUT OFF RESET NVLO FLOW SENSOR BOILER INDICATOR,VIEW PROTECTION FROM REAR THERMOSTAT RESET NVLO INDICATOR PUMP 230V-50Hz PERMANENT MAINS SUPPLY FUSED THERMISTOR AT 3A...
  • Page 42 4 Replacement of Parts 4.16 Gas Valve SENSING SECURING TUBES SCREW Remove control box housing, see diagram 4.1. (4+4) Remove the user control switch bracket, see diagram 4.3. Remove the ignition unit securing screws, see diagram 4.12. Remove ignition unit. Disconnect sensing tubes noting which way they fit.
  • Page 43 4 Replacement of Parts 4.19 Thermistor - Heating UNION NUT Gain access, by removing the user control switch bracket, see diagram 4.3. Disconnect the cables from the thermistor, see diagram 4.16. FLOW SWITCH IMPORTANT: Do not remove cable retaining strap. LOCKNUT Unclip the thermistor.

  • Page 44: Heat Exchanger

    4 Replacement of Parts 4.26 Heat Exchanger DISCHARGE Release the water pressure and drain the central heating and SAFETY PIPE domestic hot water circuits refer to Section 1.3 and 1.6. VALVE Remove the fan from the flue collector, refer to Section 2.2. Remove the flue collector, refer to Section 2.2.
  • Page 45 4 Replacement of Parts COMBUSTION FRONT CHAMBER INSULATION FRONT PANEL LOCATION SLOT SEALING WASHER CLIP AUTOMATIC AIR VENT UNION NUTS SIDE INSULATION PIECES UNION NUTS GAS/AIR RATIO SENSING TUBE Diagram 4.20 LOWER REAR INSULATION FLUE COLLECTOR SECURING SCREWS (2) SECURING SCREW (4) COMBUSTION CHAMBER UPPER REAR INSULATION...

  • Page 46: Expansion Vessel

    4 Replacement of Parts 4.28 Expansion Vessel 4.29 Burner Viewing Window Renewal of the expansion vessel requires the boiler to be removed Remove the burner viewing window, secured with two screws. from the wall. As an alternative, a separate expansion vessel of the When fitting a new window use the gasket provided, see diagram same specification may be connected as close as possible to the 4.25.
  • Page 47 4 Replacement of Parts 4.32 Clock/Timer - if fitted ELECTRO/MECHANICAL and DIGITAL clock/timer - Release the mounting bracket securing screws, see diagram 4.27. Note: Care should be taken here, as these screws also retain the fan driver control housing in position, see diagram 4.1. Disconnect electrical cables, release securing clip to remove the clock/timer spacer plate, see diagram 4.28.

  • Page 48: Spare Parts

    5 Spare Parts 5.1 Part Identification The key number in diagram 5.1 and the first column of the list will help identify the spare part. 5.2 Ordering When ordering any spare part, please quote the part number and the description from the list together with the model name and serial number information from the data label.

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