Ultrapower sxi Installation and Servicing 13121 100sxi G.C. No. 41-019-09 170sxi G.C. No. 41-019-10 High Efficiency System Store www.glow-worm.co.
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.
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.
WARNINGS Gas Leak or Fault Turn off the gas emergency control valve immediately. Eliminate all sources of ignition, i.e.smoking, blowlamps, hot air guns etc. Do not operate electrical lights or switches either on or off. Open all doors and windows, ventilate the area. Metal Parts This boiler contains metal parts (components) and care should be taken when handling and cleaning, with particular regard to edges. Sealed Components Under no circumstances must the User interfere with or adjust sealed parts.
Statutory Requirements 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, by Glowworm. Any alteration not approved by Glow-worm, could invalidate the certification, boiler warranty and may also infringe the current issue of the statutory requirements. CE Mark This boiler meets the requirements of Statutory Instrument, No.
Boiler Design Boiler Design Pluming from flue terminal This boiler is designed as a high efficiency central heating appliance, close coupled to an un-vented cylinder. The pumps, expansion vessels and associated safety devices are all fitted within the appliance, providing a one box solution for properties requiring a high domestic hot water demand. The intelligent control system is designed for both simple operation and maximum control. Once the controls are set the boiler will operate automatically.
1 Boiler Specifications Data All dimensions are given in millimetres (except as noted). See diagram 1.1 and the Boiler Specification Table below. The data label is positioned inside the boiler module on the base.
1 Boiler Specifications 13247 Diagram 1.
1 Boiler Specifications 13290 Diagram 1.
2 Boiler Location, Clearances and Ventilation This boiler is not suitable for outdoor installation. 13241 2.1 Location This boiler may be installed in any room, although particular attention is drawn to the installation of a boiler in a room containing a bath or shower where reference must be made to the relevant requirements. This boiler is suitable for installation in bathroom zones 2 and 3. In GB this is the current I.E.E. WIRING REGULATIONS and BUILDING REGULATIONS.
3 Flue Options and Terminal Clearances 3.2 Flue Terminal Position The minimum acceptable siting dimensions for the terminal from obstructions, other terminals and ventilation openings are shown in diagram 4.2. In IE the minimum distances for flue terminal positioning must be those detailed in I.S.813 “Domestic Gas Installations”. The terminal must be exposed to the external air, allowing free passage of air across it at all times. Being a condensing boiler some pluming may occur from the flue outlet.
3 Flue Options and Terminal Clearances 14845 Ridge Tile Terminal Part No. A2043800 Section 10, page 32 Top horizontal telescopic flue Ø60/100 - page 23 Part No. A2043600 Top horizontal standard flue Ø60/100 - page 27 Part No. A2043400 Vertical Flue - page 31 Vertical Flue Adapter, concentric flue Ø60/100 Part. No. A2024600 Vertical flue terminal kit, concentric flue Ø60/100 Part. No. 2000460480 Twin Flue - page 34 Twin Flue Adapter, concentric flue Ø80 Part No.
4 Heating System General 4.7 ‘Hard’ Water Areas The boiler is for use only with sealed central heating systems. The temperatures within the heat exchanger are limited by the boiler control system to minimise scale formation within the hot water pipework. However, in areas where the water is ‘hard’ (i.e.
4 Heating System 14033 Remaining conveyancing capacity (mH2O) 4 automatic bypass - closed 3 automatic bypass - factory setting 2 automatic bypass - open 1 pump speed 1 pump speed 2 0 0 200 400 600 800 1000 1200 1400 1600 1800 Volumeflow (Litres/hr) Diagram 4.2 5 Domestic Hot Water General 5.4 Safety Valves All domestic hot water circuits, connections, fittings must be in accordance with the relevant standards and water supply regulations.
5 Domestic Hot Water 5.5 SYSTEM REQUIREMENTS – Domestic Hot Water Domestic Hot Water Requirements NOTE: Attention is drawn to the following extracts from the Building Regulations 1991.
5 Domestic Hot Water TABLE 1 Worked example of discharge pipe sizing Valve outlet size G 1/2 Discharge pipe D1 15mm Discharge pipe D2 from tundish 22mm The example given in diagram 5.2 is for a G1/2 temperature relief valve with a discharge pipe (D2) having 4 No. 22mm elbows and length of 7m from the tundish to the point of discharge. 13449 NOTE: The discharge will consist of scalding water and steam. Asphalt, roofing felt and non-metallic rain water goods may be damaged by such discharges.
INTERNAL SOIL AND VENT STACK BOILER BOILER EXTERNAL SOIL AND VENT STACK 13443 6 Condensate Drain EXTERNAL MAX. 3M DIA. 22mm MIN. NO RESTRICTION ON LENGTH DIA. 22mm MIN. NO RESTRICTION ON LENGTH Internal Soil and Vent Pipe External Soil and Vent Pipe or Rainwater Pipe BOILER EXTERNAL LENGTH OF PIPE 3M MAX.* DIA. 22mm MIN. OPEN END OF PIPE DIRECT INTO GULLEY BELOW GROUND BUT ABOVE WATER LEVEL DIA. 22mm MIN. NO RESTRICTION ON LENGTH *NOTE: FOR EXTENDED PIPE RUNS 32mm DIA. PIPE SHOULD BE USED.
13405 7 Installation Preparation PLUMBING JIG L J H H H M C Retaining screws stored in cartridge N E N G F LOOSE ITEMS PACK 18 H D D G A B C D E F G H J K L M N H TANK / JIG CONNECTION WASHERS D F 13248 TANK / BOILER MODULE CONNECTION WASHERS Installation booklet (not illustrated) User Instructions (not illustrated) Condensate Connection Pipe 22mm Copper Tails 15mm Copper Tail 3/4" Sealing Washer (white plastic) 1/2" Sealing Washer 3/4" Sealing Washer (beige) Pump Washer Floor Tem
7 Installation Preparation 7.1 Loose Items Pack Please check the contents of loose items pack as shown in diagram 7.1. 2 1/ o 2 (44mm/metre) FALL TOWARDS THE BOILER IS REQUIRED WHEN FLUE EXTENSIONS ARE USED 13418 The plumbing jig is located within the tank module polystyrene top pack. 7.2 Site Requirements The appliance should be sited on a level floor, however slight adjustment can be made using the adjustable feet at the base of the tank module.
8 Gas, Water & Boiler Connection 8.1 Systems Connection IMPORTANT: With regards to the Health and Safety Manual Handling requirements, two persons shall be required to lift the appliance. It should be noted that the appliance is made up of two modules each module requiring two persons to lift. The water and gas isolation valve connections are on the jig. The condense drain and safety discharges connections are not on the jig but their pipe runs are shown on the template.
8 Gas, Water & Boiler Connection 13416 BOILER MODULE FRONT PANEL 8.3 Boiler Module Connection Unpack the boiler module from its carton. Position the boiler on top of the tank ensuring the correct engagement of the locating pins, see diagram 8.3. Remove the front panel securing screws and lift the panel off at the top locating bracket, see diagram 8.2. TANK THERMISTOR CABLE Position the plastic sealing washers as shown in diagram 8.
9 Condensate & Safety Discharge Valve Connections 9.1 Safety Discharge Valve 9.2 Condensate Drain Connection The pipes must be extended, using not less than 22mm o.d. pipe, to discharge, in a visible position, outside the building, facing downwards, preferably over a drain. A flexible condensate hose runs from a push-fit connection at the bottom of the heat exchanger and terminates on the boiler module base plate, see diagram 8.2.
10 Telescopic Flue - Length, Preparation and Installation 10.1 Flue Length When extension pipes are used the flue system must be designed to have a continuous fall to the boiler of at least 2.5o 44mm/metre to allow condensate to run back into the boiler and out via the condense trap & siphonic drain. The maximum achievable rear and side flue length for a telescopic flue, diagram 10.2, is as shown in diagram 10.1.
10 Telescopic Flue - Length, Preparation and Installation SECURING COLLAR SEALING TAPE (telescopic only) FLUE ELBOW 13221 A2043600 Top Outlet Horizontal telescopic flue pack SCREW x 4 SCREW x 2 SCREW x 2 TRIM RING GASKET (fitted) SCREW x 1 TELESCOPIC TERMINAL ASSEMBLY SEALING COLLAR Diagram 10.2 15418 Diagram 10.
10 Telescopic Flue - Length, Preparation and Installation Refer to diagram 10.2 for kit contents. 13295 10.2 Horizontal Telescopic Flue 10.3 REAR Flue If a wall thickness is between 233mm min. to 522mm max. then the flue can be used without extensions. With the flue elbow temporarily fitted, measure the distance from the outside wall to the butt joint, see diagram 10.4. If the measurement ‘Y’ exceeds 522mm, then the appropriate length of extension pipe is required.
10 Telescopic Flue - Length, Preparation and Installation 12929 10.5 Flue Fitting IMPORTANT:The flue seals are sensitive to mineral oil based lubricants. Do not grease the seals. If the seals do need to be lubricated use only water. During the installation of the flue system, ensure that debris such as mortar, filings or swarf are cleared from the flue system before completion. Inspect the flue pipes before fitting and do not install damaged or dented flue components.
10 Standard Flue - Length, Preparation and Installation 10.6 Flue Length When extension pipes are used the flue system must be designed to have a continuous fall to the boiler of at least 2.5o 44mm/metre to allow condensate to run back into the boiler and out via the condense trap & siphonic drain. The maximum achievable rear and side flue length for a standard flue, diagram 10.12, is as shown in diagram 10.11.
10 Standard Flue - Length, Preparation and Installation 12841 Diagram 10.12 15418 Diagram 10.
10 Standard Flue - Length, Preparation and Installation 13223 10.7 Standard Horizontal Flue Refer to diagram 10.12 for kit contents. 10.8 REAR Flue With the flue elbow temporarily fitted, measure the distance from the outside wall to the butt joint, see diagram 10.14. If the measurement ‘Y’ exceeds 667mm, then the appropriate length of extension pipe is required. The minimum dimension is 156mm to suit a 75mm min wall thickness.
10 Standard Flue - Length, Preparation and Installation 12847 Push the flue assembly into the wall, externally or internally, initially until the end of the assembly protrudes a short way from the inside face of the wall. This will enable the internal trim ring (if required) to be positioned and allow the flue assembly to be drawn back into the flue elbow. Secure the flue elbow in position on top of the boiler with four torque headed screws supplied.
10 Vertical Flue - Length, Preparation and Installation 10.11 Vertical flue NOTE: 2x45º bends can replace 1x87.5º bend if necessary. When using 87.5º bends any horizontal extension pipe should be inclined by a minimum of 44mm/metre (2.5°) towards the boiler to facilitate condense removal, see (a) in diagram 10.19. The vertical flue system is available as an option where the boiler position does not permit the use of the top outlet horizontal concentric flue pack. The system is made up of accessories.
10 Vertical - Flue Length, Preparation and Installation 14849 Long lengths of flues must be secured to the walls or ceilings they run against. Use at least one fixing bracket for every flue extension that is used. After cutting inner flue tubes ensure that you de-burr and chamfer the male tube end to prevent damage. Inspect the flue pipes before fitting and do not install damaged or dented flue components.
10 Vertical Flue - Length, Preparation and Installation With the flue terminal positioned in the roof the length of the final pipe can be determined. If a telescopic length cannot be used, then a standard flue length can be cut to make the correct length. Cut the flue to the desired length measuring from the ‘O’ ring end and discard the plain end of the tube. The cuts must be square and made free of burrs to allow correct assembly. NOTE: The flue pipe is 10mm longer than the air pipe, see diagram 10.25.
15407 10 Twin Flue - Length, Preparation and Installation Secure long flue lengths to walls or ceiling at every joint or on straight flue runs at every joint and every metre flue run WALL SEAL WALL SEAL Diagram 10.
10 Twin Flue - Length, Preparation and Installation 14869 10.12 Twin flue The twin flue system is available as an option when the top outlet horizontal concentric rear or vertical flue system is not appropriate, see diagram 10.26. The system is made up of accessories. The accessories include terminal assembly, bends 45º and 90º, flue extensions, fixing bracket and appropriate weather collar, see diagram 10.27.
10 Twin Flue - Length, Preparation and Installation 13318 Do not stress the flue connections during the installation this can damage the flue seals. Horizontal Terminal Installation NOTE: The air inlet terminal and the flue outlet terminals must never be installed on the opposite sides of a property. Termination must only be on the same wall or adjacent walls. When installed close together separated vertically, the air inlet must be fitted below the flue outlet terminal (see diagram 10.26).
12997 10 Plume Management Kit 10.13 Plume Management Kit The Plume Management Kit: Part No. A2044100 (white) or A2044000 (black) can be used to overcome many site issues. The Plume Management Kit will fit to the Top Horizontal Telescopic, Rear Horizontal Telescopic and Standard Horizontal Flue. This enables the flue products to exhaust further away from the boiler, thereby reducing the impact of pluming. The flue air inlet can be sited closer to doors, opening windows and air bricks, see diagram 10.30.
11 Electrical Connection 13291 11.1 Electrical Connection ELECTRICAL CARTRIDGE Take the previously laid electrical cable and route along the left hand side of the tank module through the two grommets and the cable ties and across to the installers interface as shown in diagram 11.1. Take the electrical cartridge from the loose items pack. Remove the securing screw to open the cartridge.
11 Electrical Connection 13368 11.2 System Controls 24V WARNING: UNDER NO CIRCUMSTANCES MUST ANY MAINS VOLTAGE BE APPLIED TO ANY OF THE TERMINALS ON THE 24V CONNECTION PLUG. Connect the mains supply and system heating controls e.g. room thermostat as diagram 11.4. External controls should be fitted in accordance with the rules in force. If fitting a proprietary programmer as part of the system controls the internal central heating programmer will need to be disabled as described in section 11.4.
12 Commissioning 13445 Diagram 12.1 DOMESTIC PUMP VENT 13406 IMPORTANT: At the time of commissioning, complete all relevant sections of the Benchmark Checklist located in the centre pages of this document. 12.1 Preliminaries - All Systems Do Not operate the boiler without water. The commissioning should be carried out by a competent person approved at the time by the Health and Safety Executive in accordance with the current issue of BS6798.
12 Commissioning 4. Fully open the taps on the filling loop to fill the heating system to a pressure of 1.0bar. Close the filling taps. If the domestic cold water is below 10OC the tank frost protection may operate and a F1 will be displayed, clear by pressing “Reset”, you may have to repeat this process until the pressure is 1 bar. The appliance will then continue to fire in central heating mode until the user controls are satisfied or there is another demand made for hot water.
12 Commissioning 12.5 Re-pressurising System (if required) 12.7 Range Rating 1. Ensure that the filling loop flexible hose is securely connected to the double check inlet valve, see diagram 12.3. The boilers are fully modulating for central heating, and it is therefore not necessary to range rate the boiler. However, if desired, it is possible to range rate the boiler between 9 and 24kW in 1kW increments, refer to diagram 12.4, then: a) Press and hold the ‘MODE’ button for 5 seconds.
12 Commissioning AUTOMATIC AIR VENT 15346 AUTOMATIC BYPASS CAP ● Advise the User if the mains electricity and gas are to be turned off for any long periods during severe weather, it is recommended that the whole system, including the boiler, should be drained to avoid the risk of freezing. Note: Sealed System: Contact your installation/servicing company as draining, refilling and pressurising MUST be carried out by a competent person approved at the time by the Health and Safety Executive.
13 Servicing IMPORTANT NOTES: 1. 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 should be enough. 2. It is the Law that any servicing is carried out by a competent person approved at the time by the Health and Safety Executive. 3.
13 Servicing BOILER MODULE FRONT PANEL 13440 If the combustion reading is not within the acceptable values AND the integrity of the complete flue system and combustion circuit seals have been verified and the inlet gas pressure (and gas rate) have been verified, then, it will necessary to adjust the combustion rate of the appliance. NOTE: Adjustment is made by turning the gas valve throttle an ⅛ of a turn, waiting 1 minute to allow the appliance to stabilise before checking or making further adjustments.
13 Servicing For access to the heat exchanger the silencer will need to be removed, see diagram 13.7. Remove the securing screw and pull the silencer from the gas valve, this is a push fit. 13343 13.2 Silencer SILENCER 13344 SECURING SCREW HEAT EXCHANGER Diagram 13.7 13.3 Spark Electrode CONTROL BOX IN SERVICE POSITION Diagram 13.4 FLEXIBLE HOSE UNION NUT (Do not loosen) 13330 BRACKET Clean away any debris and check the spark gap is 3.5 to 4.5mm.
13 Servicing NOTE: SILENCER BRACKET HEAT EXCHANGER 13346 13.4 Burner ● The following procedure will require that you replace the burner door seal and nyloc nuts. ● Removal of the burner is not necessary during a normal service, but if it is removed it will require a new gasket, see diagram 13.6. ● When replacing ensure that the sealing grommet, situated IGNITION LEAD below the gas valve is correctly re-seated. Slacken the gas connection at the union nut between the boiler module and tank module.
13 Servicing BURNER GASKET SPARK ELECTRODE 13326 BURNER DOOR 13356 FRONT INSULATION FLEXIBLE CONDENSATE HOSE SECURING SCREW (4) Turn anti-clockwise to remove GAS VALVE AND FAN Diagram 13.12 13.6 Condense Trap and Siphonic Drain The condensate trap & siphonic drain does not normally need servicing unless material deposits exceed beyond the service fill level, see diagram 13.14. To clean the condense trap remove the sump and rinse with water.
14 Fault Finding Fault code Fault memory display 14.3 Diagnostic Menu The Diagnostic Menu provides the ability to view and change certain parameters. See Diagram 14.5 for available parameters. To enter the diagnostic menu: a) Press and hold the ‘MODE’ button for 5 seconds. The display will change to flashing ‘0’. b) Use the ‘+’ or ‘-’ buttons to scroll to 96 (This is the installer level access password). c) Press ‘MODE’ to confirm, see diagnostic display 1.
14 Fault Finding 13119 KEY br b g/y gy g bk y r w or p pk BROWN BLUE GREEN/YELLOW GREY GREEN BLACK YELLOW RED WHITE ORANGE PURPLE PINK gy w r b bk bk b bk bk r bk or w y g w g or w p g/y b g/y br g/y g/y b b br bk br w b w g/y bk b b br g/y g/y b br r bk g/y b r r b r Diagram 14.
14 Fault Finding 13012 CENTRAL HEATING Is there anything displayed No 13411 DHW START No Is the power switched on? Yes Yes Is the display flashing 'F'? Yes Check wires between main PCB and display PCB Consult the Fault Table Yes No Initiate a DHW demand. Yes No Successful ignition Adjust DHW setpoint to 620C and turn on a hot water tap.
14 Fault Finding 13412 Fault Codes Diagram 14.
14 Fault Finding 13447 Fault Codes (continued) Diagram 14.
14 Fault Finding Description 13737 Diagnostic Menu - Level 1 Installer Access Range Domestic hot water flow temperature reading Tank temperature Heating temperature setpoint Domestic hot water setpoint Tank setpoint intelligent control Domestic hot water demand d.24 System water pressure in bar. d.27 Option Relay 1 Reserved for future use d.28 Option Relay 2 Reserved for future use > 80 no flame < 40 good flame Outside temperature Minutes Ignitions / 100 Ignitions / 100 d.
14 Fault Finding 14.4 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 14.6. 13605 State list - Accessed through Diagnostic Codes - Level 1, Installer Access d.99 STATE LISTS Central heating mode S.00 S.01 S.02 S.03 S.04 S.05 S.06 S.07 S.
15 Replacement of Parts 15.1 General Replacement of parts must be carried out by a competent person approved at the time by the Health and Safety Executive. IMPORTANT: The following replacement of parts described in sections 15.7 to 15.12 and section 15.14 will require the removal of the burner module assembly and the replacement of seal and self locking nuts. Replacement parts that have associated components that need replacing on removal, i.e. ‘O’ ring, seals, gasket, etc.
15 Replacement of Parts For access, refer to section 15.1. Refer to diagram 13.9. Pull the spark plug style connector off the spark electrode and the ignition lead connected to the igniter unit, see diagram 15.2. GASKET SPARK GAP 4mm 13273 15.4 Ignition Lead ELECTRODE 15.5 Igniter Unit For access, refer to section 15.1.
15 Replacement of Parts For access, refer to section 15.1. Refer to section 13.4 for removal of the fan, gas valve and burner assembly. Remove the four screws that secure the burner, see diagram 13.12. WASHER REAR INSULATION 13407 15.9 Burner SECURING SCREW NOTE: THE BURNER WILL REQUIRE A NEW GASKET WHEN REFITTED. 15.10 Front Insulation For access, refer to section 15.1. Refer to section 13.4 for removal of the fan, gas valve and burner assembly. Remove spark electrode, see section 15.6.
15 Replacement of Parts SILENCER BRACKET HEAT EXCHANGER SECURING NUT (4 OFF) 13351 13354 SECURING SCREW (2 OFF) SECURING SCREW (2 OFF) IGNITION LEAD IGNITER UNIT EXPANSION VESSEL CLAMP CLAMP CLAMP EARTH LEAD CH PUMP CH PUMP FLEXIBLE HOSE CONNECTION RETAINING CLIP SECURING SCREW (2 OFF) Diagram 15.8 15.13 Heating Expansion Vessel For access, refer to section 15.1. Drain the boiler heating circuit, refer to section 15.1.
15 Replacement of Parts Remove the two connection clips securing the flow and return pipes to the heat exchanger, see diagram 15.9. Move the pipes away from the heat exchanger. Remove the four heat exchanger securing screws and clamps, see diagram 15.8. CAUTION: There will be water in the heat exchanger. Remove the push fit condense pipe from the bottom of the heat exchanger, see diagram 15.10. Carefully remove the heat exchanger and disconnect the flue overheat thermostat, see diagram 13.11.
15 Replacement of Parts 15.15 Central Heating Pump 15.17 Domestic Pump For access, refer to section 15.1. For access, refer to section 15.1. Drain the boiler heating circuit, see section 15.1. Drain the boiler domestic water circuit, see section 15.1. Unscrew the union nut of the return pipe to the pump connection, see diagram 15.11. Remove the domestic expansion vessel and place in its service position, see diagram 13.6. Unscrew the union nut from the safety discharge valve.
15 Replacement of Parts For access, refer to section 15.1. Refer to section 15.1 and drain the boiler heating circuit. The safety discharge valve is situated towards the RH side of the boiler module, refer to diagram 15.14. 13442 15.18 Safety Discharge Valve LOW WATER PRESSURE SENSOR Unscrew the pipework union nut from the safety discharge valve. Remove the securing clip and withdraw the safety discharge valve. Fit new ‘O’ ring. 15.19 Domestic Water Thermistor For access, refer to section 15.1.
15 Replacement of Parts AUTOMATIC AIR VENT For access, refer to section 15.1. Refer to section 15.1 and drain the boiler heating circuit. 13304 15.23 Water Pressure Sensor RETAINING CLIP Refer to diagram 15.19. Disconnect the electrical lead and withdraw the lead plug. Remove the retaining clip to remove the low water pressure sensor. Fit new ‘O’ ring. 15.24 Plate-to-Plate Heat Exchanger For access, refer to section 15.1. Refer to section 15.1 to drain the boiler heating circuit. Refer to section 15.
15 Replacement of Parts 15.25 Hydroblock and Bypass Tube For access, refer to section 15.1. IMPORTANT: To replace the bypass tube the LH and RH hydroblocks will need to be removed. The following procedure must also be used for the replacement of either the LH or RH hydroblock. Refer to section 15.1 and drain the boiler heating circuit and the boiler domestic water circuit. Isolate the gas supply at the gas service isolation valve, see diagram 12.1. Remove the silencer, refer to section 15.3.
15 Replacement of Parts 13234 15.26 Filling Loop For access, refer to section 15.1. Refer to section 15.1 and drain the boiler domestic water circuit. Refer to diagram 12.3. Undo the union nuts on the filling loop valve and the double check inlet valve to remove the filling loop. Fit new ‘O’ rings. After replacing the filling loop open the cold-water isolation valve and slowly open a hot water tap to remove air. Close the hot water tap and check for any leaks.
15 Replacement of Parts For access, refer to section 15.1. Refer to section 5.3 and drain the hot water storage tank. 13333 15.31 Immersion Heater IMMERSION HEATER Remove the flexible condensate hose from the condensate trap and siphonic drain, see diagram 13.14. Isolate any electrical connections to the immersion heater. Unscrew the large locknut holding the immersion heater in place on the hot water tank, see diagram 15.25. Remove immersion heater and gasket.
15 Replacement of Parts For access, refer to section 15.1. 13446 15.33 Access to Control Box Internals RETAINING CLIPS Carefully pull the control box forwards so that it lies horizontally in its hinges. Do not allow the front of the control box to swing down and be loosely held by its electrical connections. Release the four retaining clips, see diagram 15.27, to remove the rear cover and gain access to the electrical connections, main PCB and appliance interface PCB. 15.
16 Spare Parts 16.1 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. If ordering from British Gas also quote the G.C. number of the part. 68 Key No. Part No. Description GC Part No.
16 Spare Parts 13325 1 4 2 7 5 6 3 24 8 23 22 9 21 20 11 19 18 17 13 15 14 12 16 Diagram 16.
17 Declaration of Conformity 70
Notes 71
0020048525-04 09.09 Because of our constant endeavour for improvement, details may vary slightly from those shown in these instructions. Glow-worm, Nottingham Road, Belper, Derbyshire. DE56 1JT www.high-efficiency.
