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INSTALLATION, COMMISSIONING AND SERVICING
INSTRUCTIONS
WALL HUNG RSF GAS FIRED CONDENSING BOILER
GREENSTAR i SYSTEM
FOR SEALED CENTRAL HEATING SYSTEMS AND INDIRECTLY
FED DOMESTIC HOT WATER
The appliance is for use with Natural Gas or
L.P.G. (Cat II 2H3P type C13, C33 & C53)
Natural Gas
Liquid Petroleum Gas
UK/IE
Model
GC Number
12i System 41-311-67
15i System 41-311-84
18i System 41-311-86
24i System 41-311-68
12i System 41-311-69
15i System 41-311-85
18i System 41-311-87
24i System 41-311-70
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Related Manuals for Worcester 41-311-67
Summary of Contents for Worcester 41-311-67
- Page 1 The appliance is for use with Natural Gas or L.P.G. (Cat II 2H3P type C13, C33 & C53) Model GC Number Natural Gas 12i System 41-311-67 15i System 41-311-84 18i System 41-311-86 24i System 41-311-68 Liquid Petroleum Gas 12i System 41-311-69...
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Page 2: Table Of Contents
CONTENTS CONTENTS Starting the appliance ....39 KEY TO SYMBOLS AND SAFETY PRECAUTIONS Commissioning ....40 Explanation of symbols . -
Page 3: Key To Symbols And Safety Precautions
INSTALL CORRECTLY COULD LEAD TO PROSECUTION. • NOTICE indicates possible damage to property or IF YOU ARE IN ANY DOUBT CONTACT THE WORCESTER equipment, but where there is no risk of injury. TECHNICAL HELPLINE. • CAUTION indicates possible injury. -
Page 4: Safety Precautions
KEY TO SYMBOLS AND SAFETY PRECAUTIONS SAFETY PRECAUTIONS FITTING AND MODIFICATIONS Fitting the appliance and any controls to the appliance IF YOU SMELL GAS: may only be carried out by a competent engineer in B CALL NATIONAL GAS EMERGENCY SERVICE ON accordance with the current Gas Safety (Installation and 0800 111 999 Use) Regulations. - Page 5 KEY TO SYMBOLS AND SAFETY PRECAUTIONS British Standards: BOILER FEATURES AND CHECKLIST • Pre-wired and pre-plumbed Where no specific instruction is given, reference should • Galvanised steel inner frame be made to the relevant British Standard codes of Practice. • Digital control system •...
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Page 6: Appliance Information
APPLIANCE INFORMATION APPLIANCE INFORMATION APPLIANCE Depth to wall 330mm (When fitted to wall frame) 700mm* 400mm * 710mm to top of case front 6720643895-01.1Wo Fig. 1 STANDARD PACKAGE: Wall hung gas fired condensing system boiler for central heating and hot water Wall mounting frame Hardware literature pack (see checklist) Bottom Panel... -
Page 7: Technical Data
APPLIANCE INFORMATION TECHNICAL DATA DESCRIPTION NATURAL GAS UNIT Gas flow rate - Max. 10 minutes from lighting Natural Gas G20 m³/h 1.33 1.63 1.96 2.67 Propane Gas (LPG) kg/h 0.96 1.20 1.44 1.91 Central Heating Maximum rated heat input (net) 12.32 15.40 18.48 24.62 12.32 15.40 18.48 24.62 Minimum heat input 3.45... -
Page 8: Layout
APPLIANCE INFORMATION LAYOUT Fig. 2 Main boiler components 6 720 644 743a (2010/10) - Page 9 APPLIANCE INFORMATION Expansion Vessel Hydraulic block mounting plate Sensor - Boiler flow Left side hand-hold for lifting boiler Removable panel - for servicing Gas valve Electrode assembly Flue air pressure switch connection (not used) Overheat thermostat Securing nut - Air/Gas manifold clamp Fan guard Silicon tube - heat exchanger air vent Manual vent point...
- Page 10 APPLIANCE INFORMATION Fig. 4 Additional components Burner ON indicator light (green) PRV pipe connection point Power ON/OFF indicator/fault diagnostic light (blue) CH return isolator Position for optional programmer Gas inlet connection 22 mm Reset button CH flow isolator System pressure gauge Condensate connection ECO button (not used) CH temperature control...
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Page 11: Pre-Installation
PRE-INSTALLATION PRE-INSTALLATION CLEANING PRIMARY SYSTEMS INHIBITOR NOTICE: Add a suitable inhibitor or combined inhibitor/anti- B All the following Pre-Installation sections freeze, if the system is exposed to freezing conditions, to must be read and requirements met the heating system in accordance with the DWTA code of before starting boiler or flue installations. -
Page 12: Mains Supply
PRE-INSTALLATION MAINS SUPPLY 3.2.1 ELECTRICAL SUPPLY • Supply: 230V - 50 Hz, 140 Watts • Cable: PVC insulated 0.75 mm (24 x 0.2 mm) temperature rated to 90 °C. • External 3A fuse to BS1362. • The appliance must be earthed. •... -
Page 13: Water System And Pipe Work
PRE-INSTALLATION WATER SYSTEM AND PIPE WORK PLASTIC PIPE WORK: SYSTEM FILL • Any plastic pipe work must have a polymeric barrier SYSTEM FILL with 600mm (minimum) length of copper pipe Heating Mains connected to the boiler. return supply Hose union •... - Page 14 PRE-INSTALLATION S AND Y PLAN SYSTEMS: S PLAN LAYOUT NOTICE: The boiler is fitted with its own internal bypass. Diverter valve Radiator valve (flow) Lock shield valve (return) Bypass Tab. 10 6720644743-05.1Wo Fig. 7 NOTICE: Y PLAN LAYOUT B A drain cock should be fitted at the WITH EXTERNAL DIVERTER VALVE lowest point of the heating circuit and beneath the appliance.
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Page 15: Condensate Pipe Work
PRE-INSTALLATION CONDENSATE PIPE WORK Alternatively if the first option is not possible an internal NOTICE: kitchen or bathroom waste pipe, washing machine B Where a new or replacement boiler is waste pipe etc. can be used. being installed, access to an internal “gravity discharge”... -
Page 16: External Connections
PRE-INSTALLATION 3.4.2 EXTERNAL CONNECTIONS FITTING AN EXTERNAL AIR BREAK NOTICE: Freezing conditions • Refer to figure 13. When a rain water down pipe, that B Pipe work length should be kept to a goes directly into a sewer that carries both rainwater minimum and the route as vertical as and foul water, is used to dispose of condensate. - Page 17 PRE-INSTALLATION CONDENSATE SOAK AWAY • The condensate drainage pipe may be run above or below the ground to the soak away. • The examples shown on this page run above ground. • The soak away must use a 100mm Ø plastic tube with two rows of three 12 mm holes on 25 mm centres and 50 mm from the bottom of the tube.
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Page 18: Pressure Relief Pipe Work
PRE-INSTALLATION PRESSURE RELIEF PIPE WORK NOTICE: B The pressure relief valve is a safety device for the boiler and if activated may discharge boiling water steam through the relief valve drain pipe. B Care should be taken when siting the outlet pipe so that it does not cause an obstruction or discharge above a window, entrance or other public access... -
Page 19: Boiler Location And Clearances
PRE-INSTALLATION BOILER LOCATION AND CLEARANCES 3.6.1 INSTALLATION 3.6.3 COMPARTMENTS This boiler is only suitable for installing internally within Follow the requirements of BS6798 and BS5440 Part 2 a property at a suitable location onto a fixed, rigid and note: surface at least the same size as the boiler and capable •... -
Page 20: Boiler Clearances - Unventilated Compartments
PRE-INSTALLATION 3.6.5 BOILER CLEARANCES - UNVENTILATED COMPARTMENTS The tables below show the options for the minimum space required to install and service the boiler inside an unventilated compartment. 3.6.6 INSTALLATION CLEARANCES - UNVENTILATED COMPARTMENTS CAUTION: CLEARANCES B Top and bottom clearances must not be reduced below the values shown in table 14 as they are the minimum clearances required for servicing. -
Page 21: Plumbing Manifold
PRE-INSTALLATION PLUMBING MANIFOLD 3.7.1 CONNECTIONS WARNING: IF FITTING AN OPTIONAL INTERNAL DIVERTER VALVE B Refer to the “Greenstar Optional Integral Diverter Valve” installation instructions. Heating System 22mm compression fittings 22mm Tab. 17 Use the fittings supplied in the Hardware literature pack. •... -
Page 22: Flue Options
PRE-INSTALLATION FLUE OPTIONS Maximum total 12, 15, 18, & 24 i System boilers flue length (mm) FLUE TYPE 60/100 80/125 Telescopic horizontal flue assembly 1,070 Horizontal flue extension 4,600 13,000 Horizontal flue with 1 x 90° bend 2,600 11,000 Horizontal flue with 2 x 90° bends 9,000 High level horizontal flue 4,600... - Page 23 PRE-INSTALLATION 350 mm 570 mm 130 mm Min 500 mm 300 mm Flat roof 6720643895-12.1Wo 6 720 644 743a (2010/10)
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Page 24: Flue Terminal Positions
PRE-INSTALLATION FLUE TERMINAL POSITIONS All measurements in millimetres Dormer Window 1,500 Velux Window Drainpipe 1,200 1,500 Boundary Window 6720643895-13.2Wo Fig. 22 Flue terminal positions NOTICE: B All measurements are the minimum clearances required. B Terminals must be positioned so to avoid combustion products entering the building. B Support the flue at approximately one metre intervals and at a change of direction, use suitable brackets and fittings (Flue bracket part numbers.: 100mm - 7 716 191 092, 125mm - 8 716 110 272). -
Page 25: Plume Management Terminal Positions
PRE-INSTALLATION 3.10 PLUME MANAGEMENT TERMINAL POSITIONS All measurements in millimetres ±45° Plume management deflector: Flue Exhaust Outlet 180° Air Intake ±80° 1,200 Balcony Window Window Window Door Boundary Drainpipe 6720643895-14.1Wo Fig. 23 Plume terminal positions NOTICE: B All measurements are the minimum clearances required. B Refer to figure 22 for all concentric flue terminal positions unless the flue position is specified on the figure above “Plume terminal positions”. -
Page 26: Installation
INSTALLATION INSTALLATION IMPORTANT HANDLING INSTRUCTIONS: WARNING: All the previous “Pre- • It is advised that two people are used to carry the Installation” sections must be read and the carton from the van to the point of delivery. requirements met before starting boiler or flue installation. -
Page 27: Wall Mounting Template & Flue Opening
INSTALLATION WALL MOUNTING TEMPLATE & FLUE OPENING WARNING: BEFORE DRILLING: ENSURE THAT THERE ARE NO PIPES, ELECTRICAL CABLES, DAMP PROOF COURSES OR OTHER HAZARDS . SAFETY: All relevant safety precautions must be undertaken. Protective clothing, footwear, gloves and safety goggles must be worn as appropriate. -
Page 28: Unpacking The Appliance
INSTALLATION UNPACKING THE APPLIANCE 1. Outer carton 2. Inner sleeve (unwrap from front) 3. Packing base 4. Protective wrapping 5. Appliance outer case B Remove outer carton (1) and place safely away from the working area. B With the outer packaging removed and the inner sleeve (2) still in place gently lay the boiler on its back. -
Page 29: Boiler Connections
INSTALLATION BOILER CONNECTIONS 1. Pull the extended tab/lever forward and down until CAUTION: ISOLATE THE MAINS GAS there is no further travel. SUPPLY BEFORE STARTING ANY WORK AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS. NOTICE: DIVERTER VALVE B If the optional integral diverter valve kit is required, fit the kit now before hanging the boiler on the wall frame. - Page 30 INSTALLATION To connect the expansion vessel flexible pipe to the NOTICE: The pressure relief connector hydraulic manifold situated to the left of the pump: must be repositioned after the boiler has B Remove and discard the plastic cap from the been correctly mounted to the wall expansion vessel flexible pipe.
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Page 31: Flue Installation
INSTALLATION FLUE INSTALLATION 4.5.2 REDUCING THE TELESCOPIC FLUE LENGTH: HORIZONTAL FLUE (60/100mm diameter) Ensure that the “TOP” label is facing up For vertical flues and 80/125mm horizontal flues, please before securing the flue section to the refer to separate instructions supplied with the flue kit. turret. -
Page 32: Installing The Telescopic Flue
INSTALLATION 4.5.3 INSTALLING THE TELESCOPIC FLUE: Refer to figure 40. B If fitting the outer seal from outside the building, slide the outer wall seal onto the terminal as shown. 1. Set the flue length to the distance required, secure with screws provided. -
Page 33: Flue Terminal Plume Re-Direction
INSTALLATION 4.5.4 FLUE TERMINAL PLUME RE-DIRECTION NOTICE: Outlet position The flue discharge can be re-directed allowing some B The flue terminal outlet position must plume redirection control, alternatively, a complete follow those stated in the relevant plume management system can be fitted to the flue appliance instruction manual. -
Page 34: Condensate Connection
INSTALLATION CONDENSATE CONNECTION Never terminate or discharge into any open source, B Push the syphon onto the sump assembly, until the including; sink, bath, shower, bidet, toilet etc. lug on the sump is fully engaged with the slot on the back of the syphon assembly and the clip is engaged in the top of the syphon. -
Page 35: Electrical
INSTALLATION ELECTRICAL Refer to figure 51. CAUTION: ISOLATE THE MAINS 1. Unscrew the three screws in the control panel. ELECTRICITY SUPPLY BEFORE STARTING 2. Pull off the connections cover. ANY WORK AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS. The boiler is pre-wired with a two metre mains supply cable. - Page 36 B Refer to manufacturers‘ instructions when connecting external parts to the wiring centre. B Worcester, Bosch Group cannot be held responsible for wiring errors. B There is an option to fit an internal diverter valve. This also requires fitting an extra harness and a code plug change.
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Page 37: Commissioning
COMMISSIONING COMMISSIONING PRE-COMMISSIONING CHECKS B Turn on the main gas supply, check the gas pipe work, CAUTION: ISOLATE THE MAINS connections and rectify any leaks. ELECTRICITY SUPPLY BEFORE STARTING B Check that the condensate pipe (1) has been ANY WORK AND OBSERVE ALL RELEVANT connected to the syphon. -
Page 38: Filling The System
COMMISSIONING FILLING THE SYSTEM WATER TREATMENT 1. Turn on the water main and open the system valves. NOTICE: 2. Open all radiator valves. B ARTIFICIALLY SOFTENED WATER MUST 3. Fill the system via a WRAS approved filling loop to 1 NOT BE USED TO FILL THE CENTRAL bar then turn the valve anti-clockwise to close. -
Page 39: Starting The Appliance
COMMISSIONING STARTING THE APPLIANCE CAUTION: RUNNING THE APPLIANCE B Never run the appliance when the appliance/system is empty or partially filled. Fig. 60 Control panel Switching the appliance on/off: Turn the boiler CH temperature control (1) to maximum. The burner on indicator (2) illuminates GREEN when the B Turn on mains power supply, the power on indicator burner has lit. -
Page 40: Commissioning
COMMISSIONING COMMISSIONING Ensure inlet pressure is satisfactory with all NOTICE: The combustion settings on this other gas appliances working. gas-fired boiler have been checked, adjusted and preset at the factory for operation on the gas type defined on the data plate. GAS PRESSURE WITHIN THE SYSTEM No measurement of the combustion values is Refer to the figures below for natural gas or L.P.G gas... -
Page 41: Checking The Gas Rate
COMMISSIONING 5.5.2 CHECKING THE GAS RATE B The gas rate should be measured at the gas meter after 10 minutes operation at maximum. See technical data section at the front of this manual. B Where a gas meter is not available (e.g. L.P.G.) the CO/CO must be checked to the units shown in the setting of the air/gas ratio, refer to section 6.6. -
Page 42: Finishing Commissioning
COMMISSIONING FINISHING COMMISSIONING 5.6.1 REPLACE OUTER CASING: 5.6.3 INSTALLING BOTTOM PANEL B Replace outer casing making sure that the securing B The bottom panel slides onto two ledges (C) either points are properly located. side of the boiler frame. B Replace top two screws (1). B Hold the panel up against the underside of the boiler and slide towards the rear, until there is no more B Tighten bottom two screws (2). -
Page 43: Service And Spares
SERVICE AND SPARES SERVICE AND SPARES INSPECTION AND SERVICE COMPONENT ACCESS 1. Removing outer case CAUTION: TURN OFF THE GAS SUPPLY AND – Remove bottom panel by pushing it fully back and ISOLATE THE MAINS SUPPLIES BEFORE then pulling it forward and down to remove. STARTING ANY WORK AND OBSERVE ALL –... -
Page 44: Check The Gas Inlet Pressure
SERVICE AND SPARES CHECK THE GAS INLET PRESSURE CHECKING FLUE INTEGRITY Refer to section 5.5.1 for more information The integrity of the flue system and performance of the boiler can be checked via the flue turret sample points. NOTICE: B Ensure that the gas inlet pressure is Flue gas sample point satisfactory with all other gas appliances Air inlet sample point... -
Page 45: Fan Pressure Test
SERVICE AND SPARES FAN PRESSURE TEST This test is to determine if the heat cell NOTICE: requires cleaning/attention. The boiler must be run at maximum output for Fan Pressure test and the Flue Gas analysis. SETTING THE BOILER TO MAXIMUM 1. - Page 46 SERVICE AND SPARES FLUE GAS ANALYSIS COMBUSTION TEST: B Connect the flue gas analyser to the flue gas sampling point as shown in the figure below. B Run the boiler at maximum output for at least 10 minutes. B Check the CO/CO readings against the information in table 24 CO/CO settings.
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Page 47: Setting The Air/Gas Ratio
SERVICE AND SPARES SETTING THE AIR/GAS RATIO B Measure the CO/CO and check against table 24 NOTICE: THE SETTING OF THE GAS RATIO below. MUST BE CARRIED OUT BY A COMPETENT If required set the minimum CO/CO via adjuster (2) PERSON. -
Page 48: Cleaning The Heat Exchanger
SERVICE AND SPARES CLEANING THE HEAT EXCHANGER 1. Refer to figure 78 and undo the securing nut on the NOTICE: COMBUSTION TESTING top of the heat exchanger and remove the retaining B Combustion testing must be carried out plate assembly. by a competent person. - Page 49 SERVICE AND SPARES BURNER REMOVAL BAFFLE REMOVAL Refer to figure 80 Refer to figure 81. 1. Remove clamping plate. 1. Remove top baffle. 2. Remove spark/flame electrode assembly and seal 2. Remove lower baffle. from the top of the heat exchanger. If the lower baffle is stuck, it may be 3.
- Page 50 SERVICE AND SPARES ACCESS COVER REMOVAL THE HEAT EXCHANGER DOES NOT HAVE TO BE REMOVED TO CLEAN. Refer to figure 82. The heat exchanger is shown removed from 1. Remove the two pozi-drive screws the boiler to illustrate cleaning more clearly. 2.
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Page 51: Replacement Of Parts
SERVICE AND SPARES REPLACEMENT OF PARTS To gain access to the following components he outer case has to be removed: CAUTION: TURN OFF THE GAS SUPPLY AND ISOLATE THE MAINS SUPPLIES B Primary sensor BEFORE STARTING ANY WORK AND B Overheat thermostat OBSERVE ALL RELEVANT SAFETY B Flue limit thermostat PRECAUTIONS. -
Page 52: Flue Overheat Thermostat
SERVICE AND SPARES 6.8.4 FLUE OVERHEAT THERMOSTAT 6.8.5 MOVING CONTROLS TO SERVICE POSITION (WITH GROMMET) To remove the following components To remove and replace the thermostat either: require the control box must be moved in to B Using a small terminal screwdriver, prise the the service position: thermostat and grommet from the plastic housing. -
Page 53: Gas Valve
SERVICE AND SPARES 6.8.6 GAS VALVE 6.8.7 AIR/GAS MANIFOLD AND FAN ASSEMBLY Refer to figure 89 The following components require the B Isolate gas supply at boiler gas cock. air/gas manifold and fan assembly to be 1. Remove wire clip from the gas valve outlet. removed: 2. -
Page 54: Fan
SERVICE AND SPARES B Rotate fan and air/gas manifold assembly (1.) around the top of the heat exchanger until the lug on the air/ gas manifold is visible. 6720643895-63.1Wo 6720643895-81.1Wo Fig. 92 Rotate the air/gas manifold assembly Fig. 93 Dismantling the air/gas manifold assembly B Lift up assembly and remove from boiler. -
Page 55: Electrode Assembly And Burner
SERVICE AND SPARES 6.8.9 ELECTRODE ASSEMBLY AND BURNER 6.8.10 HEAT EXCHANGER Refer to figure 95. B Isolate flow and return valves then drain the boiler. B Disconnect spark electrodes and flame sensor B Remove syphon. connection. Refer to figure 96. B Remove clamping plate. - Page 56 SERVICE AND SPARES Refer to figure 98. 1. Release the clip. 2. Move the lower exhaust connector up B Remove the complete exhaust assembly. Fig. 100 Heat exchanger removal B Reassemble and check combustion as stated in the Fig. 98 Release lower exhaust connection gas conversion section.
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Page 57: Access To Boiler Control Components
SERVICE AND SPARES 6.8.11 ACCESS TO BOILER CONTROL COMPONENTS 6.8.13 TRANSFORMER/PCB 1. Remove three screws. Refer to figure 104. 2. Remove cover from control. B Disconnect all electrical connections from the control. 1. Remove five screws retaining the rear panel of the control. -
Page 58: Replacing Controls
SERVICE AND SPARES 6.8.14 REPLACING CONTROLS Refer to figure 107. 1. Using a suitable tool, press the button upwards. NOTICE: 2. Slide the control support bracket to the left. B Do not replace the control unit if a CO/CO analyser is NOT available. The control box is supplied within its plastic housing. -
Page 59: Syphon Removal
SERVICE AND SPARES 6.8.15 SYPHON REMOVAL 6.8.16 DIVERTER VALVE MOTOR (IF FITTED) B Connect electrical power to the appliance. Removal of the syphon assembly will give B Enter the service mode to ensure that the diverter access to the Auto Air Vent. valve is in the mid position (there is no need to drain the appliance). -
Page 60: Auto Air Vent
SERVICE AND SPARES 6.8.18 AUTO AIR VENT 6.8.19 PUMP HEAD B Ensure the boiler is fully drained). Removal of the syphon assembly will give B Disconnect the electrical connection from the bottom access to Auto air vent. Refer to page 59. of the pump. -
Page 61: Pressure Gauge
SERVICE AND SPARES 6.8.21 PRESSURE GAUGE B Refer to figure 114 2. Undo the two screws securing the hydraulic block to the chassis (located top left / top right of the B Ensure the appliance has been fully drained. housing). 3. -
Page 62: Pressure Relief Valve
SERVICE AND SPARES 6.8.23 CH PRESSURE RELIEF VALVE 6.8.25 EXPANSION VESSEL B Remove the hydraulic block from the boiler (See The expansion vessel can be replaced with the boiler in Removing the Hydraulic Block). position if there is a side exit flue fitted and a minimum clearance of 340mm above the boiler casing. - Page 63 SERVICE AND SPARES Expansion vessel replacement (Removing the Boiler) B Isolate electrical supply. B Isolate system and gas connections at the service valves. B Drain the boiler. B Disconnect electrical supply and any external controls. B Disconnect flue connection from the boiler. B Undo connection to boiler at the service valves.
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Page 64: Short Parts List
SERVICE AND SPARES SHORT PARTS LIST Burner Gas Valve 8 716 116 067 0 8 718 120 619 0 8 716 111 325 0 GC No. H26 536 GC No. H26 538 GC No. H26 540 Control board Used on: Electrodes HT3 Bus enabled Si &... -
Page 65: Fault Finding And Diagnosis
(i.e. not This fault finding information is for guidance a first installation error). only. Worcester cannot be held responsible PRELIMINARY CHECKS : Preliminary electrical system for costs incurred by persons not deemed to checks are the first electrical checks to be carried out be competent. - Page 66 FAULT FINDING AND DIAGNOSIS Blue light Lockout indication reset button Fault Possible solution/check Slow flash Flashing Ignition lockout B Gas present and at correct pressure? (mostly (reset B Gas valve off, flashes required) – Check that there is 35V d.c. to each solenoid –...
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Page 67: Circuit Diagram
TRANSFORMER ST17 Blue EMS BUS contacts Blue Purple (for FX controls not used) Purple Orange WORCESTER 24V CONTROLS Orange PLUG IN POINT Green (NOT USED) Fuse F3, slow T 0.5 A 230V/AC Fuse F2, slow T1.6 A ST18 PRE WIRED LINK... - Page 68 FAULT FINDING AND DIAGNOSIS BOILER FUNCTION 6 720 644 743a (2010/10)
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Page 69: Central Heating Function
FAULT FINDING AND DIAGNOSIS PROTECTION FUNCTION AUTOMATIC INTERNAL FROST FUNCTION Internal boiler Internal boiler Pump switches off temperature Pump runs temperature after a 3 minute between rises above 9°C overrun period 8°C & 5°C Boiler automatic frost function (monitors internal boiler primary temperature) Internal boiler Central heating... - Page 70 Failure to install and commission according to the manufacturer’s instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty. This does not affect the customer’s statutory rights. If yes, and if required by the manufacturer, has a water scale reducer been fitted? CONDENSING BOILERS ONLY The condensate drain has been installed in accordance with the manufacturer’s instructions and/or BS5546/BS6798 If the condensate pipe terminates externally has the pipe diameter been increased and weatherproof insulation fitted?
- Page 71 Service Record It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed. Service Provider Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s instructions.
- Page 72 LITERATURE: 0844 892 9800 TRAINING: 01905 752526 SALES: 01905 752640 Worcester, Bosch Group Cotswold Way, Warndon, Worcester WR4 9SW. Tel. 0844 892 9900 Worcester, Bosch Group is a brand name of Bosch Thermotechnology Ltd. worcester-bosch.co.uk 6 720 644 743a (2010/10)
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