Installation and servicing instructions

Transcription

1 /006 GB (EN) For the installer Installation and servicing instructions Gas wall hung Boiler condensing Buderus R / 9R / 4R Please read thoroughly

2 The boiler meets the basic requirements of the appropriate standards and directives. Conformity has been substantiated by the proper documents which - together with the declaration of conformity - are filed with the manufacturer. Subject to technical modifications! Constant development efforts may result in changes to illustrations, functional steps and technical data. Updating the documentation If you have suggestions for improvement or have found discrepancies, please do not hesitate to contact us. Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

3 Contents Installation Technical specifications Dimensions and connections Boiler assembly - exploded view Items supplied with unit Hanging the boiler Pipe connections Flue Installation Electrical connections External control connections Commissioning Requirements Preparing the boiler for operation Inspection General directions Preparing the boiler for inspection Maintenance Clean the heat exchanger, burner and condensate trap Servicing Operating codes Fault codes Checking and replacing parts Conversion to another type of gas Appendix Short list of spare parts Reports Start-up report Inspection and maintenance reports Preface These installation and servicing instructions apply to: Buderus wall-mounted condensing gas boilers R / 9R / 4R. Model: C 3, C 33, C 53 Type: GB II H3P 0 mbar, 37 mbar In this document: NG = H-G0-0 mbar LPG = 3P-G3-37 mbar Fuse rating:.5 Ampere slow blow (on boiler) Power rating: 30 VAC, 50 Hz, IPX4D A fuse main supply of 3 amp required (BS. 36). The boiler consists of the following components: 600 : Gas condensing boiler, 9, 4 : Maximum output in kw for the different models R : Regular boiler. Important general instructions for use Only use the boiler in accordance with its designated use and the installation and servicing instructions. Installation, maintenance and repair must be carried out by competent service engineers (e.g. CORGI registered). Only use the boiler in conjunction with the accessories and spare parts indicated in the installation and servicing instructions. Other accessories and consumables may only be used if they are expressly provided for the designated use and if system performance and safety are not affected in any way. The boiler is suitable for connection to fully pumped, open vented or sealed water systems. Adequate arrangements for completely draining the system by provision of draining cocks must be provided in the installation pipework. Subject to technical modifications. As a result of our policy of constant development, there may be differences between illustrations, functional steps and technical data. G. C. Aplliance No. : Buderus R 4-0- Buderus 600-9R 4-0- Buderus 600-4R Other manuals available for this boiler are: user manual. BENCHMARK' Log Book All Buderus gas fired boilers include an installation, commissioning and service record log book. The details of the log book will be required in the event of any warranty work being requested. Please complete the appropriate sections on completion of the installation and commissioning. REMEMBER: Please hand the log book back to the user. Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 3

4 Regulations and directives It is a requirement that all gas appliances are installed and serviced by a CORGI registered installer in accordance with the regulations. Failure to install appliances correctly could lead to prosecution. It is in your own interest, and that of safety, to ensure the law is complied with. The installation must also be in accordance with the latest I.E.E (BS.767) Wiring Regulations, water regulations, the building regulations and the Building Standards (Scotland) and any relevant requirements of the local authority. It is a requirement and in your own interest, and that of safety that this boiler must be installed by a CORGI registered installer, in accordance with the relevant requirements of the current Gas Safety (Installation and Use) Regulations, The Building Regulations, current I.E.E. Wiring Regulations and the relevant British Standard Codes of Practise. Detailed recommendations are contained in the following British Standard Codes of Practice: BS. 5440:Flues (for gas appliances of rated input not exceeding 70 kw). BS. 5440:Ventilation (for gas appliances of rated input not exceeding 70 kw). BS Forced circulation hot water systems. BS Installation of gas hot water supplies for domestic purposes (nd. family Gases). BS Installation of gas fired hot water boilers of rated input not exceeding 60 kw. BS. 689 Low pressure installation pipes. IGE/UP/b Tightness testing and purging domestic sized gas installations. Health and & Safety Document No The Electricity at Work Regulations, 989. The manufacturer's notes must not be taken, in any way, as overriding statutory obligations. The design and construction of the Buderus wallmounted condensing gas boiler R/9R/4R conforms to the basic specifications listed in the European directive governing gas-fired appliances 90/396/EEC, and with respect to EN 65, EN 483 and EN 677. NOTE Observe the corresponding technical rules and the building supervisory and statutory regulations when installing and operating the system. WARNING! WARNING! Keep the burner-control unit housing CLOSED when working on water-bearing components. NOTE It is mandatory to inspect and service the system once a year. This includes an inspection of the entire system to see if it is in full working order. Defects and faults must be eliminated immediately. NOTE When instructions aren t followed, warranty expires. Timber Framed Buildings If the boiler is to be fitted in a timber framed building it should be fitted in accordance with the Institute of Gas Engineering document IGE/UP/7:998. Bathroom Installations This appliance is rated IPX4D. The boiler may be installed in any room or internal space, although particular attention is drawn to the requirements of the current IEE (BS.767) Wiring Regulations and, in Scotland, the electrical provisions of the building regulations applicable in Scotland, with respect to the installation of the boiler in a room or internal space containing a bath or shower. If the appliance is to be installed in a room containing a bath or shower then, providing water jets are not going to be used for cleaning purposes (as in communal baths/showers), the appliance can be installed in Zone 3, as detailed in BS.767. Compartment Installations A compartment used to enclose the boiler should be designed and constructed especially for this purpose. An existing cupboard or compartment may be used, provided that it is modified for the purpose. In both cases, details of essential features of cupboard/ compartment design, including airing cupboard installation, are to conform to the following: BS 6798 (No cupboard ventilation is required - see 'Air Supply' for details). 4 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

5 It is not necessary to have a purpose-provided air vent in the room or internal space in which the boiler is installed. Neither is it necessary to ventilate a cupboard or compartment in which the boiler is installed, due to the low surface temperatures of the boiler casing during operation; therefore the requirements of BS 6798, Clause, and BS 5440: may be disregarded. The permanent clearances required are: in front: 8 mm below: mm right side: 5 mm left side: 5 mm above: mm The position selected for installation MUST allow adequate space for servicing in front of the boiler. See table below: in front: 350 mm below: 50 mm right side: 5 mm left side: 5 mm above: 00 mm For the minimum clearances required for safety and subsequent service, see the wall mounting template. In addition, sufficient space may be required to allow lifting access to the wall mounting plate. Wall-mounted condensing gas boilers must only be operated with the combustion air/flue gas systems especially devised and authorised for this type of boiler. Observe the relevant standards, regulations and legislation of the country of final use. CAUTION! WARNING! CAUTION! Use this device for its intended purpose only. DANGER! notes relating to the heating system water. Thoroughly flush the system before it is filled with water. Use only untreated water or water treatment product such as Sentinal X00 to fill and top up the system. When using water treatment, only products suitable for use with Buderus heat exchangers are permitted (e.g. Sentinel X00). Your warranty is at risk if an incorrect water treatment product is used in conjunction with this appliance. For more information, contact Buderus Product Support Department. It is most important that the correct concentration of the water treatment product is maintained in accordance with the manufacturer's instructions. The hydraulic resistance of the boilers is shown in the graph below. graph resistance (mbar) If the boiler is used in an existing system any unsuitable additives MUST be removed by thorough cleaning. BS.7593:99 details the steps necessary to clean a domestic central heating system. In hard water areas, treatment to prevent lime scale may be necessary - however, the use of artificially softened water is NOT permitted. Under no circumstances should the boiler be fired before the system has been thoroughly flushed. Do not use water softened in a salt bedding exchanger. Do not use anti-freeze or other additives. The expansion vessel must be of sufficient size. When oxygen-permeable pipes are used (e. g. for floor heating systems) the system must be separated by means of heat exchangers. Unsuitable heating water promotes sludge formation and corrosion. This may cause malfunctions and damage in the heat exchanger. This appliance is not suitable for gravity central heating nor are they suitable for the provision of gravity domestic hot water. The boiler must be vented. Drain cocks must be located in accessible positions, which permits the draining of the entire system. They should be at least ½" BSP nominal size and be in accordance with BS , 0, 0,3 0,4 0,5 0,6 0,7 0,8 0,9,,,3 3 flow (m /h) resistance heat exchanger Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 5

6 NOTE: notes relating to domestic hot water. The boiler must not be used for direct hot water supply. The hot water storage cylinder must be of the indirect type. Primatic cylinders are not recommended and must not be used on sealed systems. The hot water cylinder and ancillary pipework, not forming part of the useful heating surface, should be lagged to prevent heat loss and any possible freezing - particularly where pipes run through roof spaces and ventilated underfloor spaces. The domestic hot water service must be in accordance with BS 5546 and BS Safe handling of substances Care should be taken when handling the boiler's insulation, which can cause irritation to the skin. No asbestos, mercury or CFCs are included in any part of the boiler and its manufacture. Open vent system requirements The system should be vented directly off the boiler flow pipe, as close to the boiler as possible. The cold feed entry should be inverted and MUST be positioned between the pump and the vent, and not more than 50 mm away from the vent connection. There should be a minimum height, 450 mm, of open vent above the tank water level. The vertical distance between the highest point of the system and the feed/expansion cistern water level MUST not be less than 000 mm. The pump must be fitted on the flow side of the boiler. A suitable pump is a domestic circulator capable of providing a maximum C temperature differential across the boiler with the whole of the heating circuit open. With the minimum flow circuit allowed by the controls the differential must not exceed 5 C (see also the graph on page 5). The vertical distance between the pump and feed/expansion cistern MUST comply with the pump manufacturer s minimum requirements, to avoid cavitation. Should these conditions not apply either lower the pump position or raise the tank above the minimum requirements specified by Buderus. The isolation valves should be fitted as close to the pump as possible. The system will work more efficiently when the flow temperature is as low as possible. Feed / expansion tank Water level (cold) fig. mm open vent Connection to boilers Open vent system 5 mm cold feed Inverted cold feed entry 450 mm minimum 000 mm minimum 50 mm max. System return System flow to pump 6 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

7 Schematic pipework The boiler does not normally need a bypass but is required when using port zone valves. Lock shield valves are required on the radiators in the area where the thermostat is situated. Thermostatic radiator valves mm open vent 5 mm cold feed Air vent Alternative x port valves An automatic bypass is always required. To comply with the building regulations that heating systems utilising the thermostatic radiator valve control of temperature in individual rooms shall also be fitted with a room thermostat, controlling the temperature in a space served by radiators not fitted with such a valve. Elbow then tee Flow automatic bypass Return Radiators 3 port valve Cylinder balancing valve Such an arrangement will provide for potentially more efficient control of the environment and will also avoid the continuous running of the circulation pump during programmed heating ON periods - thus saving electrical energy. BOILER It is, therefore, strongly recommended that, when thermostatic radiator valves are used, space heating temperature control over a living/dining area or a hallway having a heating requirement of at least 0% of the minimum boiler heat output, is achieved using a room thermostat whilst other rooms are individually controlled by thermostatic radiator valves. fig. Schematic pipework System examples NOTE System examples are to be regarded as schematic representations only. Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 7

8 0 TYPE: UBA 400 Max Safety time 0 sec CE REG nr. 63A Buderus 600 Regular with external 30V connection (Y-plan) CHF CHR FEC PM AB PL AV DV Cylinder CT CBV Prog WC RT LSV radiator LSV reference room / main living area TRV LSV radiator other rooms Key to abbreviations: AB = Automatic Bypass AV = Air Vent CB = Connection Block CBV= Cylinder Balancing Valve CHF = Central Heating Flow CHR = Central Heating Return CT = Cylinder Thermostat DV = Diverter Valve FEC = Feed / Expansion Cistern JB = Junction Box / RTH Converter LSV = Lockshield Valve PL = Permanent Live PM = Pump Prog= Programmer RT = Room Thermostat TRV = Thermostatic Radiator Valve WC = Wiring Centre CB JB fig L N E RT 3 30 vac C CT HW OFF HW ON CH ON L N E White Blue Grey Programmer JB / RTH converter Orange Gr / Yel DV WC 3 30 vac L N E Brown Blue Gr / Yel Pump PL perty rights. UBA fig. 4 Y-plan 30V 8 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

9 0 TYPE: UBA 400 Max Safety time 0 sec CE REG nr. 63A Buderus 600 Regular with external 30V connection and two port zone valves (S-plan) CHF CHR FEC ZV PM AB PL AV Cylinder CT CBV Prog WC ZV RT LSV radiator LSV reference room / main living area TRV LSV radiator other rooms Key to abbreviations: AB = Automatic Bypass AV = Air Vent CB = Connection Block CBV= Cylinder Balancing Valve CHF = Central Heating Flow CHR = Central Heating Return CT = Cylinder thermostat FEC = Feed / Expansion Cistern JB = Junction Box / RTH Converter LSV = Lockshield Valve PL = Permanent Live PM = Pump Prog= Programmer RT = Room thermostat TRV = Thermostatic Radiator Valve WC = Wiring Centre ZV = Two port Zone Valve CB JB fig L N E RT 3 30 vac C CT 8 Not used Not used 6 4 HW OFF HW ON CH ON L N White E Blue 8 Programmer Grey Orange Gr / Yel ZV CH WC 0 3 JB / RTH converter White 8 30 vac Blue Grey Orange Gr / Yel ZV DHW 0 3 L N E Pump Brown Blue Gr / Yel PL UBA fig. 6 S-plan 30V Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 9

10 Sealed system requirements. General The installation must comply with the requirements of BS and BS All components of the system, including the heat exchanger of the indirect cylinder, must be suitable for a working pressure of 3 bar and temperature of 0 C. Care should be taken in making all connections so that the risk of leakage is minimised.\. Safety valve A spring loaded safety valve complying with the relevant requirements of BS must be fitted in the flow pipe as close to the boiler as possible and with no intervening valve or restriction. The valve should have the following features: A non-adjustable preset lift pressure not exceeding 3 bar; A manual testing device; Provision for connection of a discharge pipe. The valve or discharge pipe should be positioned so that the discharge of water or steam cannot create a hazard to the occupants of the premises or cause damage to electrical components and wiring. fig. 7 SYSTEM FILL Heating return Hose return Stop cock Temporary hose SYSTEM MAKE UP Heating return Auto air vent Fill point Non return valve Non return valve Stop valve System fill and make up Non return valve Test cock Make up vessel 000 mm above the highest point of the system Mains supply Stop cock 4. Expansion vessel A diaphragm type expansion vessel must be connected to a point close to the inlet side of the pump, the connecting pipe being not less than 5 mm size and not incorporating valves of any sort. The vessel capacity must be adequate to accept the expansion of the system water when heated to 0 C. The charge pressure must not be less than the static water head above the vessel. The pressure attained in the system when heated to 0 C should be at least 0.35 bar less than the lift pressure of the safety valve. For guidance on vessel sizing refer to table. For further details refer to BS and BS. 7074: and the British Gas Corporation publication: "Material and Installation Specifications for Domestic Central Heating and Hot Water". 5. Cylinder The cylinder must be either of the indirect coil type or a direct cylinder fitted with an immersion calorifier which is suitable for operating on a gauge of 0.35 bar in excess of the safety valve setting. Primatic cylinders are not suitable for sealed systems. 6. Make-up water provision must be made for replacing water loss from the system, either: from a manually filled make-up vessel with a readily visible water level. The vessel should be mounted at least 50 mm above the highest point of the system, and be connected through a non-return valve to the system, filled at least 300 mm below the make-up vessel on the return side of the domestic hot water cylinder or radiators. or where access to a make-up vessel would be difficult by pre-pressurisation of the system. Refer to "Filling", below. 7. Mains Connection There must be no direct connection to the mains water supply or to the water storage tank supplying domestic water, even through a non-return valve, without the approval of the local water authority. 3. Pressure gauge A pressure gauge covering at least the range of 0-4 bar must be fitted to the system. The gauge should be easily seen from the filling point and should preferably be connected at the same point as the expansion vessel. 0 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

11 8. Filling The system may be filled through a temporary hose connection from a draw-off tap supplied from a servicing pipe under mains pressure. Where the mains pressure is excessive a pressure reducing valve shall be used to facilitate filling. The following fittings shall form a permanent part of the system and shall be fitted in the order stated: A stop valve complying with the requirements of BS. 00, Part (the hose from the draw-off tap shall be connected to this fitting); A test cock; A double check valve of an approved type. Sizing procedure for expansion vessel The volume of the expansion vessel (litres) fitted to a sealed system shall not be less than that given by table, multiplied by a factor of 0.8 (for flow temperatures of less than 80 C). Safety valve setting Vessel charge and initial system pressure Total water content of system (litres) 3.0 bar bar bar bar Expansion vessel volume litres Multiplying factors for other system volumes Table Expansion vessel volumes Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

12 Hazard definitions and abbreviations Hazard definitions WARNING! WARNING! CAUTION! DANGER: Indicates the presence of hazards that will cause severe personal injury, death or substantial property damage. WARNING: Indicates the presence of hazards that can cause severe personal injury, death or substantial property damage. CAUTION: Indicates presence of hazards that will or cause minor personal injury or property damage. Abbreviations NOTICE: Indicates special instructions on installation, operation or maintenance that are important but not related to personal injury or property damage. AB = Automatic Bypass AV = Air Vent CB = Connection Block CBV = Cylinder Balancing Valve CH = Central Heating CHF = Central Heating Flow CHR = Central Heating Return CT = Cylinder Thermostat CWDO= Condensate water drainage outlet DV = Diverter Valve E = Earth FEC = Feed / Expansion Cistern L = Live LSV = Lock Shield Valve MCW = Mains Cold Water N = Neutal JB = Junction Box / RTH Converter PL = Permanent Live PM = Pump Prog = Programmer PRV = Pressure relief valve (safety valve) RT = Room Thermostat T = Timer TRV = Thermostatic Radiator Valve WC = Wiring Centre ZV = Two Port Zone Valve Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

13 Installation Installation. Technical specifications Dimensions Type of gas supply as established in EN 437 (GB) Unit 600 Series Buderus wall-mounted condensing gas boiler R 9R 4R GB II H3P 0 mbar, 37 mbar (natural gas H, propane P) Rated heating capacity for system temperature (modulating from 30 to 00 ) Heating curve 75/60 C Heating curve 40/30 C kw kw Seasonal efficiency (SEDBUK) % Central heating installation Heating water temperature C ΔT at residual head of 00 mbar C <0 Max. operating overpressure of boiler bar 3.0 Volume heat exchanger heating circuit l.0 Pipe connections Gas (compression fitting) mm Ø CH flow/return mm Ø Condensate water outlet inch G" Flue gas values Condensate water quantity, natural gas, 40/30 C l/h ph value of condensate water approx. 4. Flue gas mass-flow rate Full load Part-load g/s g/s Flue gas temperature, full load Heating curve 75/60 C Heating curve 40/30 C C C Flue gas temperature, part-load Heating curve 75/60 C Heating curve 40/30 C C C CO full load, natural gas standard test gas G0 % 9. CO full load, natural gas standard test gas LPG % 0.3 Standard emission factor CO mg/kwh < Standard emission factor NO x mg/kwh <30 Max. pressure drop permitted Pa Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 3

14 Installation Dimensions Flue-gas system Unit 600 Series Buderus wall-mounted condensing gas boiler R 9R 4R Type of flue gas connection C 3, C 33, C 53 Standard diameter of flue gas system mm 60/00 Electrical data Mains connection voltage V 30 Electrical power consumption Full/Part load W 40/5 40/5 40/5 Electrical protection rating IPX4D Boiler dimensions and weight Height x Width x Depth mm 700 x 460 x 90 Weight (without casing) kg Casing kg Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

15 Installation. Dimensions and connections 460 mm 30 mm 50 mm 70 mm 90 mm 05 mm Ø00 mm 5 mm 45 mm 30 mm Ø60 mm 0 mm 604 mm 700 mm CH FLOW CH RETURN 8 mm 8 mm 8 mm 00 mm 38 mm 376 mm 695 mm 9 mm 8 mm CWDO mm GAS CH Flow = Ø mm copper CH return = Ø mm copper GAS = Ø mm compression fitting CWDO = Condensate water drainage outlet G" OUTSIDE Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 5

16 Installation.3 Boiler assembly - exploded view Regular unit (R / 9R / 4R) Legend. Casing. Door complete 3. Ventilation cover 4. Bracket 5. Concentric adaptor 6. Clip adaptor mm Lipring 8. Fan 9. Seal Fan / Venturi mm Lipring. Flue gas pipe. Condensate collector 3. Seal flue gas pipe 4. Flue gas thermostat (STL) 5. Condensate trap 6. Air silencer tube mm Lipring 8. Gas valve 9. Rectifier 0. Venturi. Gas pipe. Gas service valve 3. Pipe return/flow top 4. Pipe connection 5. Clip 6. Return pipe 7. Drain cock 8. Connection return 9. Sensor 30. Flow pipe 3. Connection supply 3. Spring heat exchanger 33. Automatic air vent 34. O-ring heat exchanger 35. Seal heat exchanger 36. Safety sensor 37. O-ring 38. Rearpart heat exchanger 39. Gasket heat exchanger 40. Insulation rearpart heat exchanger 4. Burner kw Burner 9-4kW 4. Burner seal 43. Heat exchanger 44. Restrictor baffle 45. Front heat exchanger insulation 46. Frontpart heat exchanger 47. Sight glass 48. Securing latch 49. UBA 50. Power switch 5. Glow ignitor 5. Ionisation electrode 53. Cable fan 54. Cable harness 55. Frame 56. RTH converter 30V 57. Seal ventilation cover 58. Assembly casing block 59. Seal 60. Air seal bush 6. Bracket ionisation electrode & glow ignitor 6. Syphon seal condensate trap 63. Seal syphon 64. Insulation divider 65. Clip & screw insulation divider 66. Cap 67. Seal ionisation electrode 68. Clip air silencer 69. Gas air supply 70. Valve fan / gas air supply 7. Seal glow ignitor 7. Shield glow ignitor 73. Seal venturi / gasket 74. Seal fan / gas air supply 75. Gas air supply valve 76. Plate screw 77. Casing clip 78. Clip 79. Screw M5 80. Gasket 8. Clip 8. Seal flue gas thermostat 83. Seal condensate pipe 84. Swivel dreg with pinchring 85. Screw 86. Syphon 87. Drain pipe condensate trap / syphon mm Lipring 6 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

17 Installation.4 Items supplied with unit Check the contents against the packing list to ensure that no parts are missing. Key to fig. : item : Wall-mounted condensing gas boiler 4 5 item : Wall bracket item 3: Technical documents item 4: CH Flow connection pipe 3 6 item 5: CH Return connection pipe item 6: Gas service valve item 7: Plastic bag containing the following accessories: x wall fixing-screws x wall plugs x washers Seals ( x ¾ ) Square wrench Initial start-up sticker Second identification plate Fig. Items supplied with unit 7.5 Hanging the boiler The boiler is transported in a horizontal position. Open the box and remove the four foam supports (fig., item ). The casing is not attached to the boiler. Take out the casing (fig., item ) and put aside during installation. CAUTION! 3 CAUTION! Do not carry the boiler by the casing at any time. Fig. Unpacking the box Hang the wall mounting template. Drill the necessary holes. Take out the wall bracket (fig., item ) and attach to the wall using the wall mounting template. Take out the condensing gas boiler (fig., item 3) and hang onto the wall bracket (fig. 3). Dispose of packaging. Fig. 3 Installation Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 7

18 Installation.6 Pipe connections CAUTION! CAUTION! Ensure that all pipework is routed so as to minimise any strain on the boiler fittings. Buderus advises to use copper piping for the first 600 mm, then it is allowed to switch to another approved pipe material. Take the CH flow connection pipe and the CH return connection pipe out of the box and connect to the condensing gas boiler (fig. 4, item and ). Connect the central heating system to these pipe connections according to the relevant standards..6. Gas Supply The gas installation must be installed in accordance with BS.689. CAUTION! CAUTION! Pipework from the meter to the boiler MUST be of adequate size. The complete installation MUST be tested for gas tightness and purged as described in IGE/UP/b..6. Gas connection A gas service valve is supplied with the unit. Take it out of the box and connect it to the boiler see fig. 4, item 3 with approved P.T.F.E.-tape. Connect to gas supply according to the relevant standards. 4 3 Fig. 4 Pipe connections Key to fig. 4: item : CH flow item : CH return item 3: Gas item 4: Condensate water drainage outlet (CWDO).6.3 Water circulation system The central heating system should be installed in accordance with BS.6798 and, in addition, for smallbore and microbore systems, BS.5449 or EN Condensate removal Positioning and termination of the condensate drain pipe The condensate pipe should be run and terminate internally to the house soil and vent stack or waste pipe. Alternatively, the condensate can be discharged into the rainwater system if connected to a foul water draining system, or into a purpose-made soak away (condensate absorption point). All connecting drainage pipework should generally have a fall of at least.5 to the horizontal, or approximately 50 mm per metre of pipe run. If this is can not be achieved, consider the use of a condens pump. 8 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

19 Installation If an external pipe run is unavoidable then the run should be insulated with water proof insulation limited to 3 m in length. Should this be exceeded then the pipework diameter should be increased to 3mm and the pipework insulated using weather proof materials. WARNING! WARNING! Any external run must be insulated with water proof insulation. It should be noted that the connection of a condensate pipe to a drain may be subject to local building controls. Material for condensate NOTE Ensure that the condensate trap is filled with water. The condensate drainage pipe should be run in a standard drain pipe material, e.g. PVC (polyvinyl chloride), PVC-U (unplasticized polyvinyl chloride), BS (acrylonitrile-butadienestyrene), PP (polypropylene polyprolene) or PVC-C (cross-linked polyvinyl chloride). The condensate drain can be attached to the syphon (fig. 5). Any internal pipework should be of a diameter to match the requirements of the condensate exit pipe on the appliance. Fig. 5 Condensate outlet Internal termination to internal stack The condensate drainage pipe should have a minimum outside diameter of " with no length restriction. It should incorporate a trap with a 75 mm condensate seal and be connected to the stack at a point at least 450 mm above the invert of the stack. The trap built into the boiler will provide this 75 mm (fig. 6) condensate seal. Boiler Ø mm min. internal soil and vent stack No length restriction 75 mm min. trap 450 mm min. invert Fig. 6 Internal termination of condensate drainage pipe to internal stack Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 9

20 Installation External termination via internal branch (e.g. sink waste) Boiler The condensate drainage pipe should have a minimum outside diameter of " with no length restriction. The connection should preferably be made downstream of the sink waste trap. If the connection is only possible upstream, then the air break is needed between the two traps. This is normally provided by the sink waste pipe (see fig. 7 and 8). Sink No length restriction 75 mm min. trap Ø mm min. Open end of pipe direct into gully, below ground but above water level Fig. 7 External termination of condensate drainage pipe via internal discharge branch (e.g. sink waste) and condensate syphon Boiler Ø mm min. No length restriction 75 mm min. trap Sink Open end of pipe direct into gully, below ground but above water level Fig. 8 External termination of condensate drainage pipe via internal discharge branch (e.g. sink waste proprietary fitting) and condensate syphon Condensate absorption point The condensate drainage pipe should have a minimum outside diameter of " and the external pipe length should not be more than 3 m. The condensate absorption point should be sited in a convenient position as close as possible to the boiler but not in the vicinity of other services. See fig. 9 for information. External length of pipe 3m max. Ø mm min. 000 mm min. Ground (either/or) NOTE When discharging condensate to an outside drain caution must be taken to ensure blockage cannot occur during freezing conditions. If this is likely to occur, the use of a syphon trap is recommended. Ø00 mm min. plastic tube bottom of tube sealed 5 mm min. 300 mm min. Fig. 9 limestone cladding Two rows of three mm holes at 5 mm centres 50 mm from bottom of tube and facing away from house hole depth 400 mm min. External termination of condensate drainage pipe to absorption point 0 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

21 Installation.7 Flue Installation.7. Siting the flue terminal A A F M G N E B,C M H, I F N B,C K F G D J K F O L C K L K G Terminal Position Minimum Spacing A. Directly below, above or alongside 300 mm an opening window, air vent or other ventilation opening B. Below guttering, drain pipes or soil 00 mm pipes C. Below eaves 00 mm D. Below balconies or a car port roof 00 mm Not recommended! E. From vertical drain pipes or soil 50 mm pipes F. From internal or external corners 300 mm G. Above adjacent ground, roof or 300 mm balcony level H. From a surface facing the terminal 600 mm I. From a terminal facing a terminal 00 mm J. From an opening in a car port (e.g. 00 mm door or window) into dwelling. Not recommended! K. Vertically from a terminal on the 500 mm same wall L. Horizontally from a terminal on the wall 300 mm M. Adjacent to opening 300 mm N. Above intersection with roof 300 mm O. From a vertical structure on the roof 500 mm G Fig. 0 Flue terminal position table Balanced flue terminal position The flue must be installed in accordance with the recommendations of BS :000. Pluming will occur at the terminal so terminal positions where this could cause a nuisance should be avoided. The air supply and the flue gas exhaust must meet the applicable general regulations. Please consult the instructions provided with the flue terminal kits prior to installation. The boiler MUST be installed so that the terminal is exposed to external air. It is important that the position of the terminal allows the free passage of air at all times. Minimum acceptable spacing from the terminal to obstructions and ventilation openings are specified in table. If the lowest part of the terminal is less than metres above the level of the ground, balcony, flat roof or place to which any person has access, the terminal must be protected by a guard. Ensure that the guard is fitted centrally. The flue assembly shall be so placed or shielded as to prevent ignition or damage to any part of the building. Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

22 Installation The air inlet/products outlet duct and the terminal of the boiler MUST NOT be closer than 5 mm to combustible material. Detailed recommendations on the protection of combustible material are given in BS :000. NOTE It is absolutely essential to ensure, in practice, that products of combustion discharging from the terminal cannot reenter the building or any other adjacent building through ventilators, windows, doors, other sources of natural air infiltration, or forced ventilation/airconditioning. If this could occur the appliance MUST be turned off (with the owners permission), and labelled as unsafe until corrective action can be taken. DANGER! Only use Buderus flue gas systems. As other flue gas systems are not tested with this appliance..7. Air supply and flue gas exhaust in a closed installation A ventilation cover is integrated into the 600 Series condensing gas system boilers. This cover houses a number of components, such as the burner and the heat exchanger. Since this ventilation cover is part of the air supply system, it is vital that it is always installed correctly. To ensure optimal operation, the 600 Series appliances must be connected to a Buderus horizontal or vertical flue terminal. These terminals have been developed specifically for Buderus condensing gas boilers and have been comprehensively tested for trouble free operation when correctly installed. Fig. Standard horizontal flue pack 3 Standard horizontal flue pack (fig. ): item : Flue turret 60/00; item : Horizontal flue terminal 60/00; item 3: Flue finishing kit. L 45 mm 8 mm Fig. Side flue and rear flue installation Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

23 Installation Standard vertical flue pack (fig. 3): item : Vertical flue terminal 60/00. item : Weather collar item 3: Flue support bracket item 4: Vertical flue adaptor 3 4 Fig. 3 Standard vertical flue pack.7.3 Maximum Flue length (L) The maximum pipe length (L) of the air supply and flue gas exhaust pipes for the 600 Series condensing gas system boilers is determined by the total pressure loss of all components in the flue gas exhaust / air supply system. Maximum length of horizontal or vertical extensions for 60/00 flue system is L = 7.5 m. Maximum length of horizontal or vertical extensions for 80/5 flue system (special adapter required) L = 0 m (see fig. 4 and fig. 5). Take the flue pipe clearances into account when planning the layout of the place of installation (see subsection.7.: "Siting the flue terminal" on page ). Maximum wall thickness without extensions is 45 mm. Maintain a minimum side clearance of 8 mm (see fig. ). Flow pressure available for use [Pa] Buderus R/9R/4R 75 L Fig. 4 Vertical flue length Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 3

24 Installation.7.4 Additional flue parts The additional flue parts listed can be ordered from your supplier. L Flue size 60/00: 60/00 flue system For every bend or extension the max. flue length (L) has to be reduced by: A 500 mm extension 0.5 m 000 mm extension.0 m Fig. 5 Horizontal flue length 90 bend 45 bend.4 m 0.7 m NOTE The total reduction length must never exceed the maximum flue length. Flue size 80/5 (optional): 80/5 flue system For every bend or extension the max. flue length (L) has to be reduced by: 500 mm extension mm extension.0 90 bend 45 bend NOTE Vertical adaptor (60/00 --> 80/5) is required for 80/5 flue gas systems, because the flue outlet of the boiler is 60/00. Weathering slates for 60/00 and 80/5 Flat roof, pitched roof. 4 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

25 Installation.7.5 Standard 00 mm flue systems The standard concentric flue system provides for a max. horizontal straight length of upto 7.5 m for 60/00 flue connection (see paragraph.7.3). Full instructions for fitting this flue are in subsection.7.: "Air supply and flue gas exhaust in a closed installation" on page. IMPORTANT Any horizontal flue system fitted to a condensing boiler must be inclined towards the appliance at an angle of 30 mm per metre length to prevent condensate dripping from the flue terminal. This means that the clearance above the appliance must be increased to match the duct length. See figure on page Connecting the vertical flue adaptor Fit the vertical flue adaptor (fig. 6) onto the appliance flue connector. Flue gas testing point Fig. 6 Vertical flue adaptor.7.7 Connecting the horizontal flue turret Fit the horizontal flue turret (fig. 7) onto the appliance flue connector. Flue gas testing point Fig. 7 Horizontal flue turret with flue gas testing point Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 5

26 Installation.7.8 Installation of the horizontal flue The standard flue is suitable for lengths upto 660 mm (see fig. 8). For longer flue runs upto 7.5 m, extension air/flue ducts are available. Flue turret adaptor Maximum length Terminal assembly NOTE Use the wall-mounting template to help you mark the position of the side flue opening Fig. 8 Installation with horizontal flue gas turret Outer Wall.7.9 Flue duct preparation and assembly Measure the flue length L. Refer to figures 9 and 0. NOTE The flue must be inclined from the boiler. L Mark off the lengths shown onto the ducts and cut the length. The cuts must be square and free from burrs. Terminal assembly outer (air) duct - L-70 mm, inner (flue) duct - L-50 mm. The measurement is made from the ridge at the terminal indicating the outer face of the wall. Refer to figure. Extension air duct - L-70 mm, flue duct - L-50 mm. The measurement is from the formed end. Assemble flue system completely. Push the ducts fully together. The slope of the terminal outlet must be face downwards (see fig., item ). The assembly will be made easier if a solvent free grease is lightly applied to the male end of the ducts. NOTE An inner flue finishing kit is provided which should be fitted to the ducts before assembly. Push the assembly through the wall and slide the turret onto the flue connector. Refer to figure 7. Ensure that the turret is fully entered into the socket on the boiler. From the outside fix the flue finishing kit to the terminal and, after ensuring the duct is properly inclined towards the boiler, fix the finishing kit to the wall. If the terminal is within m of the ground where there is access then an approved terminal guard must be fitted. The guard must give a clearance of at least 50 mm around the terminal and be fixed with corrosion resistant screws. Fig. 9 Fig. 0 Fig. 05 Flue length - rear Flue length - side Flue terminal position L Flue Finishing Kit Outer Wall Face Flue Terminal Raised Ring locating the terminal relative to the outside wall face 6 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

27 Installation.8 Electrical connections.8. Mains connection NOTE All Buderus boilers require a permanent live. A mains supply of 30 V - 50Hz is required. External controls are suitable for volt free or 30 V installation. Wiring to the boiler MUST be in accordance with the current I.E.E. (BS.767) Wiring Regulations and any local regulations. Wiring should be a 3 core PVC insulated cable, not less than 0.75 mm (4 x 0. mm), and to table 6 of BS Connection must be made in a way that allows complete isolation of the electrical supply such as a double pole switch having 3 mm contact separation in both poles, or by a three pin connector, serving only the boiler and system controls. This boiler is equipped with a double pole switch see fig., item. The means of isolation must be accessible to the user after installation. The electrical connection to the mains supply should be readily accessible and adjacent to the boiler. If the supply cord is damaged, it must be replaced by a registered Corgi installer to avoid a hazard and must be an original spare part. The electrical supply for both the boiler and the system must be taken from the same fused spur outlet. Fig. permanent live ON UBA OFF Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 7

28 Installation.8. Wiring Diagram.5 Ampere slow blow Burner-control unit (UBA) 0-pin connection strip 8-pin connection strip KIM PA FR FS MV FK STB L M N Fan Ionisation Glow ignitor MAINS SWITCH ) Volt free external control device MAINS 30V ~ 50 Hz ) external 30V controls STB Flue gas monitor FR Return-temperature sensor (return) FS Safety-temperature sensor (safety) FK Supply-temperature sensor (supply) KIM Boiler identification module MV Gas valve Note: ) Only one room-temperature regulating device may be connected. ) Volt free room thermostat when used with 30V timer *) *) remove wirebridge when used Fuse, main switch, emergency OFF switches and safety measures to comply with local regulations and standards IMPORTANT The wires in this mains lead are coloured in accordance with the following code: GREEN AND YELLOW - EARTH ; BLUE - NEUTRAL ; BROWN - LIVE As the colours of the wires in the mains lead of of the appliance may not correspond with the coloured markings identifying the terminals in your connector proceed as follows: The wire coloured green and yellow must be connected to the terminal on the connector marked with the letter E or by the earth symbol or coloured green or green-and-yellow. The wire coloured brown must be connected to the terminal marked with the letter L or coloured red. The wire coloured blue must be connected to the terminal marked with the letter N or coloured black. WARNING THIS APPLIANCE MUST BE EARTHED Ensure that your appliance is connected correctly - if you are in any doubt consult a qualified electrician. For location of individual components, see service section and the exploded views in this manual. 8 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006

29 Installation.9 External control connections The wall-mounted condensing gas boiler can be fitted with the following control devices: A room-temperature control device at 30V connected to the RTH converter (see fig. 3, item ) ON/OFF temperature controller, volt free (see fig. 3, item 3)..9. External 30V controls (see also Y-plan and S-plan on page 8 and 9)" WARNING! WARNING! This appliance must be earthed. 3 Connect the black pre-wired lead to a permanent live supply (from the same fused isolator as all other controls on the heating system), L N E (fig. ). Remove the cover of the RTH converter (fig. 3, item ). Feed the 30V switch live and neutral (from external controls) through the cable gland. Identify the 30V terminal block by the shaded area and 30V label. Connect the switch live to terminal "" and a neutral to terminal "" (fig. 3, item ). Replace covers. Fig. 3 Connecting the control device NOTE Terminal 3 (fig. 3, item ) is not used..9. Volt free external control device connection NOTE If using the boiler for central heating only. Volt free controls may also be used. Connect the black pre-wired lead to a permanent live supply (from the same fused isolator as all other controls on the heating system), L N E (fig. ). Remove the cover of the RTH converter (fig. 3, item ). Lead the control device wire through the cable lead. Fix the wire to terminal "" and "" of the volt free connection (fig. 3, item 3). Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006 9

30 Commissioning Commissioning When a boiler starts up there are a couple of things that happen. Below is a short process description: When there is a heat demand: The fan starts up and the glow ignitor turns on. When there is a DHW request then the three-way-valve switches from CH operation to DHW operation. Once all the requirements are met (glow ignitor is hot enough, fan is operating at the correct speed and the pump is on) then the gas valve will open. A flame will establish and the glow ignitor extinguishes. The boiler will start at partial load and will go to the requested load after a few seconds. If the boiler detects a no-flow situation, the boiler will shut down for a short while and then try to start up again. If no flame develops then the gas valve closes and the fan continues to run to post purge. The boiler will try to start up three times. If there still is no flame developing after three times, then the boiler will lock-out. When the heat demand stops: The gas valve closes. The fan will keep going for a short while to post purge the appliance. If there has been a DHW request then the three-wayvalve will switch back to the central heating setting. Follow the steps described in this chapter to properly commission the boiler and fill out the commissioning log book. NOTE If a fault occurs, then refer to the servicing section in this manual or contact Buderus.. Requirements Thoroughly flush out the whole of the system with cold water, without the pump in position. For sealed system only: Fill and vent the system until the pressure gauge registers.5 bar. Test for leaks. Check the operation of the safety valve by manually raising the water pressure until the valve lifts. This should occur within ± 0.3 bar of the preset lift pressure. Release water from the system until the initial system design pressure is reached. 30 Installation and servicing instructions for wall-mounted condensing gas boiler Buderus R/9R/4R 0/006