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CAUTION. To avoid the possibility of injury during the installation, servicing or cleaning of this appliance, care should be taken when handling edges of sheet steel components. Henrad WH LX FF, FF Installation...
GENERAL WH LX FF & FF CONTENTS B.G. Certified - P.I. No. 87 AP 107 Air Supply..............8 Destination Countries: GB and IE Natural Gas only Appliance type: C & C Boiler Clearances ............6 Data badge - top of controls support. Boiler Exploded View ..........
GENERAL INTRODUCTION GAS SAFETY (INSTALLATION AND USE) Regulations, 1994, amendments 1996 or the rules in force. The WH 30 FF-100 FF (standard) and the WH LX 30 FF-80 FF It is law that all gas appliances are installed by a CORGI (deluxe casing) is a range of automatically fully controlled, wall mounted, balanced flue, fanned gas boilers.
GENERAL BOILER WATER CONNECTIONS This appliance in NOT suitable for use in a direct hot water system or for gravity circulation. 70 FF, 80 FF & 100 FF ONLY must be fitted with the 22mm x 28mm copper sockets, provided in the Hardware Pack, (or equivalent 22mm x 28mm compression fittings ) and the pumped flow and return pipes run in 28mm pipe.
GENERAL Bathrooms Table 3 - Balanced flue terminal position The boiler may be installed in any room or internal space, although Terminal Position Minimum Spacing particular attention is drawn to the requirements of the current I.E.E. (BS.7671) Wiring Regulations and, in Scotland, the electrical Directly below or alongside an opening window, air vent or other provisions of the building regulations applicable in Scotland with...
GENERAL Table 5 - Water flow rate and pressure loss The following notes are for general guidance: 1. It is NOT necessary to have a purpose provided air vent in the Boiler Size room or internal space in which the boiler is installed. Boiler 8.8 11.7 14.6 17.6 20.5 23.4 29.3 2.
GENERAL OPEN VENT SYSTEM REQUIREMENTS - FULLY PUMPED. The system should be vented directly off the boiler flow pipe, as close to the boiler as possible. The cold feed entry Feed / expansion should be inverted and MUST be positioned between the 450 (18") cistern Mimimum...
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INSTALLATION UNPACKING Boiler Pack Contents The complete boiler The boiler is supplied fully assembled in one pack, together with a standard flue assembly for lengths up to 600mm (23 Installation & Servicing Instructions "), rear or side flue outlet, in Pack B1. User's Instructions Hardware Pack (listed below) Optional extras, if ordered (Downward Piping Kit, Extension...
INSTALLATION PACKAGING AND CASING REMOVAL STANDARD MODEL DELUXE MODEL (LX) 1. Unpack the boiler. 1. Unpack the boiler. 2. Remove the casing as follows and place to one side to 2. Remove the casing as follows and place to one side to avoid damage.
INSTALLATION FLUE ASSEMBLY - Exploded View 1. An optional flue duct extension kit is required for wall thicknesses greater than 600mm (23 ") Refer to Frame 8. 2. When cutting the ducts, always use the cardboard support rings LEGEND provided. IMPORTANT.
INSTALLATION 12 CUTTING THE FLUE - wall thicknesses of 114 to 600mm Note. If the stand-off brackets are used it is essential that 30mm is added to the measured wall thickness when marking the flue (to allow for the thickness of the brackets). 1.
INSTALLATION 16 MOUNTING THE BOILER Note. Have ready to hand the M8 screw, washer and rectangular plate supplied in the hardware pack. For downward routing of pipes the M5 spacer supplied in the Downward Piping Kit, should now be fitted to the back of the boiler. 1.
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INSTALLATION 19 FLUE ASSEMBLY - Exploded view For wall thickness 114mm to 600mm 1. An optional flue duct extension kit is required for lengths (distance from the outside wall to the relevant side of the boiler casing) greater than 600mm (23 ") Refer to Frame 8.
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INSTALLATION 22 CUTTING THE FLUE 23 FITTING THE FOAM SEAL For flue lengths 114 to 600mm ONLY 1. To determine the position for the foam seal measure the wall thickness and mark it onto the flue, measuring from 1. Measure the flue length required (i.e. the distance from the side of the boiler to the outside face of the wall).
INSTALLATION 27 WALL MOUNTING PLATE 26 FITTING THE SIDE OUTLET PLATES 1. Fix the mounting plate to the wall with the No.14 x 50mm Note. If the boiler is fitted closer than 25mm to the side wall wood screws. the side outlet plate must be fitted now. 2.
INSTALLATION 29 CONNECTING THE FLUE TO THE BOILER 1. Pull the flue through the side outlet plate and locate the 3 studs in the hole in the side of the boiler. 2. Secure the flue to the boiler using the three M5 nuts provided.
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INSTALLATION 32 FLUE EXTENSION DUCTS - continued Flue length General arrangement Extension Note. Side flue shown. Extension duct tube 1. A maximum of 2 extension ducts (plus the standard flue duct) may be used together. 2. Flue extensions of greater length than 1m (39") should be supported with the bracket provided.
INSTALLATION 34 GAS CONNECTION 35 WATER CONNECTIONS Refer to 'Gas Supply ', page 7. 1. Remove the plastic plugs from the flow and Refer to Frame 2 for gas inlet service dimensions. return pipes. A minimum pressure of 20 mbar MUST be available at the boiler inlet with the boiler operating.
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INSTALLATION 38 PICTORIAL WIRING LEGEND blue bk black brown yellow white orange violet pink grey y/g yellow/green 39 MID POSITION VALVE Pumped only Notes. 1. Some earth wires are omitted for clarity. Ensure proper earth continuity when wiring. 2. Numbering of terminals on thermostats is specific to the manufacturer.
INSTALLATION 40 TWO SPRING CLOSED VALVE Pumped only Notes. 1. Some earth wires are omitted for clarity. Ensure proper earth continuity when wiring. 2. Numbering of terminals on thermostats is specific to the manufacturer. 3. This is a fully controlled system - set the boiler thermostat to maximum.
INSTALLATION Gas Installation 42 COMMISSIONING AND TESTING (a) Electrical Installation 1. The whole of the gas installation, including the meter, MUST be inspected and tested for soundness, and purged in accordance with the recommendations of BS. 6891. 1. Checks to ensure electrical safety should be carried out by a competent person.
INSTALLATION 44 INITIAL LIGHTING - continued Deluxe Model (LX) Standard Model 45 GENERAL CHECKS d. Balance the system. Make the following checks for correct operation: 5. Finally, set the controls to the user's requirements. 1. Set the boiler thermostat knob to position 6 and operate the The temperatures quoted below are approximate and vary between mains on/off switch.
SERVICING 47 SCHEDULE 48 BOILER CASING REMOVAL To ensure the continued safe and efficient operation of the 1. Deluxe model (LX) -Lift the glass fascia and pull the sliding appliance, it is recommended that it is checked at regular catch out to retain the glass in the upper position. Release intervals and serviced as necessary.
SERVICING 50 CLEANING THE FAN ASSEMBLY / THE FLUEWAYS 1. Remove the 2 silicon rubber tubes from the fan sensing points. 2. Disconnect the fan leads. 3a. Rear flue Slacken the M4 screw securing the flue connector to the fan. Disconnect the connector from the fan and slide into the flue.
SERVICING 53 GAS PRESSURE ADJUSTMENT PILOT MAIN BURNER The pilot is factory set to maximum and no further After any servicing, reference should be made to Table 2 adjustment is possible. If, after removing and checking the which quotes details of the rated output with the related injector (as detailed in Frame 58) and ensuring that there is burner setting pressure and the heat input.
SERVICING 57 THERMOSTAT CONTROL, THERMISTOR SENSOR LEAD and ON/OFF SWITCH REPLACEMENT Refer also to Frame 54. Remove the control box fixing screw (B). Pull the box forward and downward to disengage. Thermostat control 1. Pull the knob off the shaft. 2.
SERVICING 59 IGNITION ELECTRODE AND LEAD REPLACEMENT 1. Refer to Frame 54. 2. Remove the burner and air box assembly. Refer to Frame 49. 3. Remove the electrode retaining nut. 4. Remove the pilot shield. 5. Remove the ignition electrode and integral lead. 6.
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SERVICING 62 FAN REPLACEMENT 1. Remove the 2 silicon rubber tubes from the fan sensing points. 2. Disconnect the fan leads. 3a. Rear flue. Slacken the M4 screw securing the flue connector to the fan. Disconnect the connector from the fan and slide into the flue. 3b.
SERVICING 66 HEAT EXCHANGER REPLACEMENT 7. Remove the thermostat sensors from the pockets on the heat exchanger by removing the M3 screws and plates. Note. Refer to Frame 5 (Boiler assembly - Exploded view) for 8. Slacken 3 turns only the 4 heat exchanger / inter-panel illustration of the procedure detailed below.
FAULT FINDING Check mains supply and fuses. Reset the overheat 'stat. Set control START Check timer and system thermostats 'stat to maximum. Allow the boiler to Check that the mains on neon are all ON. Check that boiler plug and reach temperature - if the overheat 'I3' is illuminated.
SHORT LIST OF PARTS When ordering spares please quote: The following are parts commonly required due to damage or expendability. Their failure or absence is likely to affect safety 1. Boiler Model or performance of this appliance. 2. Appliance G.C. Number The list is extracted from the British Gas List of Parts, which 3.
SHORT LIST OF PARTS 69 BURNER ASSEMBLY - Exploded View 12. Air box and pilot assembly. LEGEND 17. Pilot shield. (Numbers up to 51 relate to the B.G. spares list) 13. Main burner. 18. Gas control valve. 11. Burner manifold 14.
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SHORT LIST OF PARTS 71 BOILER CASING ASSEMBLY Standard model Deluxe model (LX) 72 SHORT PARTS LIST Henrad WH LX FF, FF Installation...
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THIS SYMBOL IS YOUR ASSURANCE OF QUALITY The code of practice for the installation, commissioning & servicing of central heating systems LXFF.87/AQ/220 Natural Gas These appliances are designed for use with Natural LXRS.87/AQ/221 appliances are Gas only. They have been tested and conform with service listed by FF.87/AP/107 the provisions of BS.
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YOUR FEEDBACK and your chance to win a free boiler At Henrad we've been leaders in the design and engineering of robust and reliable boilers for over 90 years. We want to continue as leaders by listening to your suggestions for how to improve our boilers and our service. We will be giving away a free boiler for the five best ideas every year (to be selected by our Technical Director).
Further information If you would like information about Henrad Boilers please complete this sheet and fax it to us on 01482 498699 or post it to Caradon Plumbing Limited, PO Box 103, National Avenue, Kingston upon Hull, HU5 4JN. Installer details Name Address Post Code...