Home

"user manual"

1. 15 Electricity Supply 16 External Controls 16 Appliance Installation 17 Unpacking The Appliance 17 Preparing The Wall 17 Mounting The Appliance 17 Central Heating Service Connections 18 Gas Connections 18 Condensate Connection 18 Air Flue Duct Installation 19 Installing the air flue duct from inside room 19 Installing the air flue duct from outside 20 Electrical Connections 20 Commissioning amp Testing 22 Filling the Water System 22 Commissioning the Appliance 23 Final Checks 23 Lockout Reset Indication 23 Frost Protection 23 Overheat Protection 23 Other Features 23 Users Instructions 24 Appliance Log Book 24 Internal Wiring Diagrams Fault Finding Genetal cet yds ie es kee Diagnostic LED Indicators Faulting Finding Codes Central Heating Fault Finding Short Parts List z I m 2 MAINTENANCE USE 1 Introduction The Biasi Riva OV 18 and Riva OV 30 are high effiency condensing fully automatic wall mounted gas appliances suitable for room sealed applications and for use with Natural gas G20 only They are designed for use wi
2. 3 Ensure that all secondary controls e g programmer room thermostat are calling for heat 4 The display changes to H When the burner has lit there will be a small dot appearing in the bottom right corner of the display 5 If the burner fails to light the fan will stop Initially this may be due to air in the gas supply The boiler will automatically have five attempts at ignition After the five attempts it may be necessary to RESET the boiler by turning the control knob to RESET position and repeat 2 Fig 1 Fascia Panel 7 SEGMENT DIGITAL DISPLAY BURNER LIT INDICATOR DOT er CONTROL KNOB En Control of Water Temperature CH Adjustable via the CH temperature control knob to give radiator temperatures of between 30 and 80 To operate the boiler more efficiently it is recommended to set the CH temperature about half way between and Please check with your installer the size of your radiators During periods of no heating requirement this control should be set to the Standby position Note If the display shows flashing H the boiler is in a service mode ff and the boiler will fire continuously at minimum input This setting is for the convenience of the Service Engineer ONLY IE XI To turn the Boiler off For short or long periods Switch the programmer and or room thermostat Switch to the OFF position Note The appliance is fitted with a frost 4 protection d
3. comply with the Building Regulations each section must have a tick in one or other of the boxes TIME amp TEMPERATURE CONTROL TO HEATING ROOM T STAT amp PROGRAMMER TIMER PROGRAMMABLE ROOMSTAT TIME amp TEMPERATURE CONTROL TO HOT WATER CYLINDER T STAT amp PROGRAMMER TIMER COMBI BOILER HEATING ZONE VALVES FITTED NOT REQUIRED HOT WATER ZONE VALVES FITTED NOT REQUIRED THERMOSTATIC RADIATOR VALVES FITTED AUTOMATIC BYPASS TO SYSTEM FITTED NOT REQUIRED FOR ALL BOILERS CONFIRM THE FOLLOWING THE SYSTEM HAS BEEN FLUSHED IN ACCORDANCE WITH THE BOILER MANUFACTURER S INSTRUCTIONS THE SYSTEM CLEANER USED THE INHIBITOR USED FOR THE CENTRAL HEATING MODE MEASURE amp RECORD GAS RATE m3 hr ft3 hr BURNER OPERATING PRESSURE IF APPLICABLE N A mBar CENTRAL HEATING FLOW TEMPERATURE C CENTRAL HEATING RETURN TEMPERATURE C FOR COMBINATION BOILERS ONLY HAS A WATER SCALE REDUCER BEEN FITTED YES NO WHAT TYPE OF SCALE REDUCER HAS BEEN FITTED FOR THE DOMESTIC HOT WATER MODE MEASURE amp RECORD GAS RATE m3 hr ft3 hr MAXIMUM BURNER OPERATING PRESSURE IF APPLICABLE N A mBar COLD WATER INLET TEMPERATURE HOT WATER OUTLET TEMPERATURE WATER FLOW RATE its min FOR CONDENSING BOILERS ONLY CONFIRM THE FOLLOWING THE CONDENSATE DRA
4. 10 mm above the top of the wall mounting plate and use the side wings on the plate to locate the appliance in horizontal direction Then carefully lower the appliance ensuring that the top locating rail is securely engaged Z S lt 2 b Connect the central heating system pipes to the central heating flow and return pipes on the boiler Pipe work may be routed from above or below the appliance as required Important Note The flow and return N thermistors should be moved from the upper to the lower pipes if routing from below Ref Fig 4 Figure 10a REAR FLUE 108 POSITION OF l DUCT HOLE POSITION OF WALL MOUNTING PLATE 7 Figure 10b SIDE FLUE RJ we NY Pr u POSITION OF DUCT HOLE D 127 5 101 5 POSITION OF WALL MOUNTING PLATE 17 Z lt lt Mounting the appliance Fig 11 RAIL LOCATION EDGE WALL MOUNTING PLATE Vw p 44 Central Heating Service Connections Refer to Figure 12 a The boiler is supplied with 22mm copper tails for both upwards and downwards optional flow and return pipe routing suitable for compression or soldering connections USE EXTREME CARE IF SOLDERING THE JOINTS NEAR TO THE APPLIANCE IF BOILER IS LOCATED IN TIGHT SPACE IT IS RECOMMENDED TO REMOVE THE PIPES FROM THE BOILER b Connect the central heating system pipes to the central heating flow and return pipes on the boiler If downwards rou
5. 9 The air inlet flue outlet MUST NOT be closer than 25 mm 1 in to combustible material h Condensing appliances have a tendency to form a plume of water vapour at the terminal under certain operating conditions This is normal but positions where this would cause damage or a nuisance should be avoided Consideration should be given to the dispersal of the plume in terms of adjacent surfaces and neighbouring properties A special flue terminal is available to raise the flue discharge point use of this terminal will limit the maximum flue length available For further information contact BIASI UK Ltd Fig 5 Technical helpline 0121 506 1350 Z m lt Terminal Position mm Ventilation irements Eu SSES A Directly below a window or other opening 300 Detailed recommendations for air supply are B Below gutters soil pipes or drain pipes 75 given in BS 5440 2 200 The following notes are for general guidance D Below 2500 E Below NO a It Necessary to have a purpose F From vertical drain pipes and soil pipes 150 provided air vent in the Toom or internal space G From internal corners 1000 in which a room sealed appliance is installed H From external corners 300 b Cupboard or compartment ventilation is not I Ab
6. g The complete installation must be tested for gas tightness Central Heating System a The appliances are designed for open vented central heating water systems but may be fitted to a sealed central heating system provided the necessary components such as expansion vessel and pressure safety relief valve are fitted to the system Refer to Figure 8 for a typical open vented system design which incorporates radiators and a drain facility that must be provided at the lowest point in the system to allow complete drain down b The installation should be designed to operate with a flow temperature of up to 95 C If a sealed system is to be used then only a competent person must fill it d The hydraulic resistance curves for the appliances are given in Figure 6 e If thermostatic radiator valves are fitted one radiator must be fitted with two lock shield valves to enable correct operation of the pump overrun facility f The following paragraphs outline the specifications of the items fitted to the appliances Appliance Hydraulic Resistance RIVA OV 30 RIVA OV 18 Fig 6 Pressure Drop m H20 0 5 7 8 9 1011 12 13 14 15 16 17 18 19 20 21 22 23 24 Flow Rate Itr min Draining Tap A draining tap must be provided at the lowest point of the system which will allow the entire system and hot water system to be drained Draining taps shall be to the current issue of BS 2879 13 z m
7. lt 2 Z o m lt 39 Safety Valve Open Vent System A safety valve need not be fitted to an open vented system See 3 16 for sealed systems The pump should be fitted on the flow pipe from the boiler and have isolating valves each side A variable duty pump should be set to give a temperature difference of no greater than 20 between the flow and return with the boiler controls set at which is approximately 80 C to give a flow rate as shown in table 1 See figure 6 for pressure loss of the boiler High resistance microbore systems may require a higher duty pump ESTE rov Rate If it is necessary to alter the flow rate the system can be fitted with lockable balancing valve in the main flow or return pipes shown as valve A in figure 7 The flow rate through the boiler must not be allowed to fall below that given in table 1 Table 1 Flow Rate MINIMUM FLOW RATE 200 l h This is equal to 20 C differential at minimum heat input Water Treatment WATER TREATMENT CLEANSING AND FLUSHING THE HEATING SYSTEM NOTE British Standard BS7593 2006 stresses the importance of cleansing and flushing of the system to ensure it continues to run efficiently with the minimum of maintenance necessary Biasi UK Ltd fully supports this professional approach and recommends that the system is cleansed with an effective chemical cleanser and protected long term wit
8. 24 SIDE AND FRONT SECURING SCREWS SIDE PANEL DECORATIVE FRONT COVER SIDE AND FRONT a SECURING SCREWS E Users Instructions Upon completion of commissioning and testing the system the installer must instruct the user in how to operate the appliance by drawing the user s attention to the following a Give these Instructions to the householder and emphasise their responsibilities under the Gas Safety Installation and Use Regulations or rules in force b Explain and demonstrate the lighting and shutdown procedures C Advise the householder on the efficient use of the system including the use and adjustment of all system controls for CH d Advise the user of the precautions necessary to prevent damage to the system and to the building in the event of the system remaining inoperative during frost conditions Explain the function of the CH Temperature Control knob and how to reset the appliance Emphasise that if cutouts persists the appliance should be turned off and the installer or service engineer consulted 24 f Stress the importance of an annual service by a registered heating engineer 9 The electrical mains supply to the appliance must remain ON for the frost protection circuit to operate EN Appliance Log Book A logbook is supplied with this appliance to record installation and commissioning details and to make future servicing of the appliance easier This logbook f
9. ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 9 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 2 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 4 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 6 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 8 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 10 pare ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE INTERVAL RECORD It is recommended that your heating system is serviced regularly and that you complete the appropriate Service Interval Record below SERVICE PROVIDER Before completing the appropriate Service Interval Record below please ensure you have carried out the service as described in the boiler manufacturer s instructions Always use the appliance manufacturer s specified spare part when replacing gas controls SERVICE 11 parte ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 13 b re ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 15 pre ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 17 baz ENGINEER
10. Heating Press 3 0 Max Cen Heat Flow Temp C 80 Min Cen Heat Flow Temp C 30 General Specifications General Specifications Biasi RIVA OV 18 General Specifications Biasi RIVA OV 30 Total Weight full Total Weight empty Total Weight full kg 38 1 Total Weight empty kg 36 1 Sg mem T gt Max Lift Weight kg 28 1 Total Water Capacity 20 Electrical Supply 230V 50Hz Fuse 3A lt Electrical Supply 230V 50Hz Fuse 3A Internal Fuse JE I Internal Fuse 4A 250V Max Power Consumption W 30 Max Power Consumption W 46 T Rang 2 P20 Nat Gas 80 60 74 ue Gas Tem Nat Gas 80 60 C Flue Gas Temp epus 41 CO Value Max Rate 9 2 0 3 Case on CO Value Max Rate 9 2 0 3 Case on Nat 29 0202 Oase OM Nat Gas 9 0 0 2 Case off he donde ta SS SE E 8 9 0 1 ean Max Rate 0 01 0 005 CO Value Max Rate 96 0 01 0 005 Elus Products mass g s 8 3 7 ES flow rate Nat Gas aoe 7 Gas Ons Gas Valve Offset min rate Gas 15mm compression OG Flow zamm tail CH Flow 22mm tail CH Return 22mm tail CH Return 22mm Condensate Drain 21 5 22mm plastic overflow pipe Condensate Drain 21 5 22mm plastic overflow pipe Biasi RIVA OV 18 Biasi RIVA OV 30 EM Overall Dimensions and Minimum Clearances E zx inm E
11. LePermareri bva 230 mans mpu Green yellow 200 Room thermostat o 1641 Cylinder thermostat V4073A Mid position valve 98321 923 ATEN Gi Boiler 230V 2m Pump Aen ae ae 76432 Optional T4360A Frost thermostat heating 3 r circuit only use with pz programmers with spot switching 5 E 2 Upp15 50 Pump Plan Wiring Fig 20 Centre Connections Typical Programmer Boder controls jan o ar sclareiid Pump live pwitched Neutra 230V ed 3 amp Terminals 21 Z lt 5 Commissioning amp Testing EAJ Filling the water System Before commissioning the appliance the whole gas installation including the meter MUST be purged and tested for gas tightness in accordance with BS 6891 1988 Open all doors windows extinguish naked lights and DO NOT SMOKE whilst purging the gas line Before commencing the commissioning procedure ensure that the gas service cock is turned on the electricity supply is isolated and that the CH pipe work is complete Fill the water systems by following the procedure detailed below in steps a and b and referring to Figure 21 It is recommended where possible to flush the CH system without the appliance fitted to avoid debris and flux blocking the waterways within the appliance Fig 21 Commissioning the Water System CH FLOW
12. NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 19 pare ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 12 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 14 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 16 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 18 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 20 parte ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE Biasi U K Ltd Newman Park Western Way Wednesbury WWV10 7BJ Technical Helpline 0121 506 1350 Web site www biasi co uk 751131 iss 1
13. RETURN THERMISTOR CH FLOW THERMISTOR x CONDENSATE CH FLOW CH RETURN CONDENSATE OUTLET 3 Installation Requirements EN Statutory Requirements GAS SAFETY INSTALLATION AND USE REGULATIONS 1998 AS AMENDED The appliance is suitable only for installation in GB and IE and should be installed in accordance with the rules in force In GB a CORGI Registered Installer must carry out the installation It must be carried out in accordance with the relevant requirements of the Gas Safety Installation and Use Regulations The appropriate Building Regulations either The Building Regulations The Building Regulations Scotland Building Regulations Northern Ireland The Water Fitting Regulations or Water Byelaws in Scotland The Current LEE Wiring Regulations Where no specific instructions are given reference should be made to the relevant British Standard code of Practice In IE the installation must be carried out by a Competent Person and installed in accordance with the current edition of 1 5 813 Domestic Gas Installations the current Building Regulations and reference should be made to the current ETCI rules for electrical installation It should also be in accordance with the relevant recommendations in the current editions of the following British Standards and Codes of Practice BS 5449 BS 5546 BS 5440 1 BS 5440 2 BS 6798 BS 6891 Institute of Gas Engineer document IGE UP 7 BS
14. a 3A fused three pin plug and un switched shuttered socket outlet or a 3A fused double pole switch having a 3mm contact separation in both poles serving only the boiler and its external controls may be used 3 Clearances and Ventilation It is not neccesary to have a purpose provided air vent in the room or internal space in which a room sealed appliance is installed Cupboard or compartment ventilation is not necessary for a room sealed appliance providing that the minimum clearances are maintained 1 3 Boiler Logbook Please ensure that you have a Logbook supplied with your appliance This Logbook should be completed by your installer to verify that the correct installation and commissioning procedure was followed Failure to complete the Logbook may result in difficulties should a problem arise with your appliance during the guarantee period This Logbook forms part of the industry s Benchmark code of practice for the installation commissioning and servicing of central heating systems All CORGI Registered Installers carry a CORGI ID card and have a registration number Both should be recorded in your Logbook You can check your installer is CORGI registered by calling CORGI on 0870 401 2300 1 4 Operating Instructions Refer to Fig 1 EEN To light the Boiler 1 Switch on the electrical supply 2 Turn the CH control knob to the midpoint between minimum and maximum setting The display changes from 2
15. on the valve gently to ease the valve of its seat Checking that water is discharged release the lever and ensure that the valve seats correctly and does not leak Where this is not possible a manual check should be carried out Release the cold water to the initial design pressure Do not use the pressure relief valve to drain the system because dirt or debris could prevent the valve seating correctly If the valve leaks or sticks closed then replace it Fig 22 PRESSURE RELIEF LEVER PRESSURE GAUGE CAPILLARY PRESSURE GAUGE NOTE THESE COMPONENTS ARE NOT SUPPLIED BY BIASI UK LTD 5 2 Commissioning the Appliance a Slacken the screw in the appliance inlet pressure test point and connect a suitable manometer Refer to Figure 23 b Check that the gas supply is turned ON and the gas service cock is OPEN c Switch on the electrical supply d Turn the CH temperature Control knob to the midpoint between the minimum and maximum setting The display changes from g to h Ensure programmer and room thermostat if fitted are calling for heat f The display changes to H The fan should start and after a few seconds an ignition will commence 9 If the burner fails to light the fan will stop Initially this may be due to air in the gas supply line The boiler will automatically have five attempts at ignition It may be necessary to turn the CH Temperature Control knob fully anti clockwise to reset p
16. scheme Gas Appliance Directive 90 396 EEC Effiency of Hot Water Boilers Directive 92 42 EC Low Voltage Directive 93 68 EEC Electromagnetic Compatibility Directive 92 31 EEC No modifications to these appliances should be made unless they are fully approved by the manufacturer Appliance installation must be carried out by a competent person and must be in accordance with the current legislation in force at the time of installation in the country of destination The manufaturer s instructions must not be taken as overriding any statutory requirements GAS LEAKS DO NOT OPERATE ANY N ELECTRICAL SWITCHES OR USE A NAKED FLAME TURN OFF THE GAS SUPPLY VENTILATE THE AREA BY OPENING DOORS AND WINDOWS CALL OUT YOUR LOCAL GAS SUPPLIER Control of Substances Hazardous to Health Under Section 6 of the Health and Safety at Work Act 1974 it is required to provide information on substances hazardous to health The adhesives and sealants used in this appliance are cured and give no known hazard in this state Insulation Pads These can cause irritation to the skin eyes and the respiratory tract If you have a history of skin complaints you may be susceptible to irritation High dust levels are usual only if the material is broken Normal handling should not cause discomfort but follow normal good hygiene and wash your hands before eating drinking or going to the lavatory If you do suffer irritation to the eyes or severe
17. 7074 expansion vessel and 15813 for IE IMPORTANT NOTE Manufacturer s instructions must NOT be taken in any way as overriding statutory obligations 3 2 Appliance Location The following limitations MUST be observed when siting the appliance a The appliance is not suitable for external installations The position selected for installation should be within the building unless otherwise protected by a suitable enclosure and MUST allow adequate space for installation servicing and operation of the appliance and for air circulation around it Section 2 4 and 3 4 b This position MUST allow for a suitable flue system and terminal position The appliance must be installed on a flat vertical wall which is capable of supporting the weight of the appliance and any ancillary equipment O If the appliance is to be fitted in a timber framed building it should be fitted in accordance with the British Gas publication Guide for Gas Installations In Timber Frame Housing Institute of Gas Engineers document IGE UP 7 If in doubt advice must be sought from the Local Gas Supplier d The appliance is approved to a protection rating of IP20 Therefore if the appliance is to be installed in a room containing a bath or a shower any electrical switch or control utilising mains electricity must be so situated that it cannot be touched by a person using the bath or shower Attention is drawn to the requirements of the current
18. BS 7671 EE Wiring Regulations and in Scotland the electrical provisions of the Building Regulations applicable in Scotland This section under review Flue Terminal Position Detailed recommendations for flue installation are given in BS 5440 1 The following notes are for general guidance The appliance MUST be installed so that the terminal is exposed to the external air b It is important that the position of the terminal allows free passage of air across it at all times Itis ESSENTIAL TO ENSURE that products of combustion discharging from the terminal cannot re enter the building or any other adjacent building through ventilators windows doors other sources of natural air infiltration or forced ventilation air conditioning O d The minimum acceptable dimensions from the terminal to obstructions and ventilation openings are specified in Figure 5 e If the terminal discharges into a pathway or passageway check that combustion products will not cause nuisance and that the terminal will not obstruct the passageway 11 Z m lt z f Where the lowest part of the terminal is fitted The minimum acceptable spacing from the less than 2 m 78 in above the ground above terminal to obstructions and ventilation openings a balcony or above a flat roof to which people are specified in Fig 5 have access the terminal MUST be protected by a purpose designed terminal guard
19. CH RETURN MANUAL BLEED VALVE a All Systems A competent person in accordance with the current issue of BS6798 should carry out commissioning Fill the system with cold water Vent the system via the radiator valves and system air vents in accordance with normal practice Ensure that all system air vents are closed To aid venting a manual air vent is provided on the LHS of the heat exchanger 22 Check the system for soundness Drain the entire system to flush out any debris and refill making sure that all the air is properly vented from the system and pump Repeat this instruction with the system hot It is recommended that the system be cleaned with a recognised system cleaner such as Fernox or Sentinel Prior to lighting the appliance to check the gas rates the central heating system should be checked for circulation by operating the appliance with the gas turned off this is to ensure that no air locks occur The appliance may go into ignition lockout and require resetting b Sealed Systems When fitting the boiler into a sealed system it will be necessary to fit an expansion vessel pressure gauge and pressure relief valve external to the boiler These items are available from most plumbing suppliers Fill the system until the pressure gauge registers 2 0 bar Clear any locks and check for soundness Check the operation of the pressure relief valve figure 22 by lifting the lever or turning the knob
20. ETURN THERMISTOR CH FLOW THERMISTOR FLUE GAS SENSOR PRIMARY HEAT EXCHANGER COMBUSTION CHAMBER FRONT COVER DETECTION ELECTRODE OFFSET PRESSURE TEST POINT MAX CO THROTTLE ADJUSTMENT CONDENSATE TRAP GAS ISOLATING COCK CONTROL BOX GAS VALVE FEED PIPE GAS VALVE Fig 29 29a Spark Electrode Sealed Water System Check the operation of the pressure relief valve as described in section 5 1 b b Check the correct operation of the pressure gauge by noting the reading when cold and check that the pressure increases with temperature Replace the gauge if readings are suspect Check that the system is at its original cold design pressure If necessary re pressurise the system as described in section 5 1 b and search for and rectify any leaks causing loss of water d In case of heavy pressure fluctuations during the heat and cool down cycle check the pre charge pressure of the expansion vessel If the air pressure is less than 0 75 bar recharge vessel with an air pump 29b Detector Electrode mra Re assembly amp Re commissioning Re assemble all components in reverse order b Check that all joints and seals are correctly fitted Turn on the gas and electricity supply and light the appliance as described in section 52 d Re perform a combustion check as described in section 6 1 e Check the operation of the appliance in CH mode f Remove the manometer and
21. IN HAS BEEN INSTALLED IN ACCORDANCE WITH THE MANUFACTURERS INSTRUCTIONS YES FOR ALL INSTALLATIONS CONFIRM THE FOLLOWING THE HEATING AND HOT WATER SYSTEM COMPLIES WITH CURRENT BUILDING REGULATIONS THE APPLIANCE AND ASSOCIATED EQUIPMENT HAS BEEN INSTALLED AND COMMISSIONED IN ACCORDANCE WITH THE MANUFACTURER S INSTRUCTIONS IF REQUIRED BY THE MANUFACTURER HAVE YOU RECORDED A CO COz2 RATIO READING N A YES CO CO2 RATIO THE OPERATION OF THE APPLIANCE AND SYSTEM CONTROLS HAVE BEEN DEMONSTRATED TO THE CUSTOMER THE MANUFACTURER S LITERATURE HAS BEEN LEFT WITH THE CUSTOMER COMMISSIONING PRINT CORGI ID No ENG S NAME SIGN Bes SERVICE INTERVAL RECORD It is recommended that your heating system is serviced regularly and that you complete the appropriate Service Interval Record below SERVICE PROVIDER Before completing the appropriate Service Interval Record below please ensure you have carried out the service as described in the boiler manufacturer s instructions Always use the appliance manufacturer s specified spare part when replacing gas controls SERVICE 1 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 3 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 5 ENGINEER NAME COMPANY NAME TEL No CORGI ID SERIAL No COMMENTS SIGNATURE SERVICE 7
22. Maximum equivalent length of 10 metres can be achieved utilising extensions This flue system can only be used to discharge horizontally it is not designed to enable termination in the vertical plane Vertical kit with 90 elbow Fig 3 Co axial 60 100mm Supplied with a straight flanged adapter a co axial elbow and a co axial pipe with terminal this kit allows for a vertical rise of 0 5 m from the boiler In all circumstances the flue terminal must discharge horizontally and the equivalent flue length must not exceed 10 metres Elbows 45 amp 90 Fig 3 Co axial 60 100mm Elbow kits enable the standard flue kits to be Offset to overcome obstructions or ensure the 8 correct clearances for the flue terminal Each elbow used in addition to the standard flanged elbow reduces the overall acceptable length of the flue system as follows 45 reduce length by 0 5 m 90 reduce length by 1 m Fig 3 B 50 100 LT oO EE we Min 250mm TT TT 10m A M et ae a Pe hop d b a Ew AT i ZA u P I LL MM gd PA m oe p ty Vertical roof kit Fig 3 1 This kit allows vertical termination of the flue pipe through the roof The kit is 1 2 m in length Extension pieces Co axial are also available which allows the flue system to be extended to a total overall maximum permissable length Optional 45 and 90 elbows can be used to offset the flue route Each additional elbow reduces t
23. No demand Faulty connector Differential check faulty Flame for 15 seconds Water flow rate too low Error in power supply No flame Low mains voltage No light indication Defective power supply NOTE RPM SIGNAL FAN SPEED SIGNAL IN REVOLUTIONS PER MINUTE BCC BOILER CHIP CARD A SMALL MICROCHIP THAT PUSH FITS ONTO THE CONTROL PCB AND ALTERS OPERATING PARAMETERS SEE SECTION 7 FIG 31 FAULT CODES 1 4 CAN BE RESET BY FOLLOWING THE PROCEDURE IN SECTION 1 4 5 HOWEVER IF ANY OTHER FAULT CODE IS SHOWING PLEASE CONTACT YOUR INSTALLER OR BIASI UK LTD TECHNICAL HELPLINE 0121 506 1350 1 7 Warning condensate drain point must not be modified or blocked see section 4 6 of the installation If a gas leak is suspected or exists turn the gas manual OFF at the incoming mains adjacent to the meter Do not operate any electrical switches 1 8 Pluming from Terminal Do not operate any electrical appliances Open all windows and doors Do not smoke Extinguish all naked lights Phone the Transco 24 hour emergency number immediately on 0800 111999 Do not call from a mobile phone The boiler is fitted with a condensate trap The Like all condensing boilers this appliance will produce a plume of condensation from the flue terminal This is due to the high efficiency and hence low flue gas temperature of the boiler It is normal and not a fault indication Z m lt 2 INSTALLATION 2 Technical Spec
24. The room or cylinder tank thermostat where fitted are calling for heat The gas service cock is open The system is at design pressure Before attempting any electrical fault finding always conduct the preliminary electrical system checks as described in the Instructions for the British Gas Multimeter or other similar instrument On completion of any service or fault finding operation involving making or breaking electrical connections always check for EARTH CONTINUITY POLARITY and RESISTANCE TO EARTH For further information contact BIASI UK Ltd Technical helpline 0121 506 1350 8 2 Diagnostic LED Indicators FASCIA PANEL Refer to Figure 32 The LED shows code 3 in a lockout condition For fault finding refer to the diagnostic chart shown below Fault Finding Codes In the event of the appliance failing to light refer to the Diagnostics Chart 8 4 Central Heating Fault Finding Upon a demand for Central Heating closure of the time switch and room thermostat where fitted the controls should carry out a set of start up checks followed by an ignition sequence Refer to Section 5 2 If the control has powered up correctly but does not respond to a CH demand Remove plug cover and check voltage between L3 orange and N blue If O V ac check external programmer room thermostat If 230 V ac check control for lockout or blocking codes refer to section 8 3 check operation of the extern
25. Wall hung fan flue room sealed high efficiency gas boiler User Manual and Installation Instructions RIVA OV Models G C Appl No M110 18SM OV 41 583 03 M110 308M OV 41 583 04 ABIASI Congratulations on your choice RIVA OV are condensing high efficiency sealed chamber fan flue gas boilers They are fully electronically controlled and have electronic ignition The materials they are made of and the control systems they are equipped with give you safety a high level of comfort and energy savings to allow you to get the greatest benefit out of independent heating RIVA OV allow a higher efficiency by reducing the flue gas temperature such that the water vapour formed during the combustion is condensed out This allows a gain of useful heat that otherwise would be lost V N lt Remember that The manual must be read thoroughly so that you will be able to use the boiler in a safe and sensible way must be carefully kept It may be necessary for reference in the future First lighting up must be carried out by competent and responsible engineer The manufacturer disclaim all liability for any translations of the present manual from which incorrect interpretation may occur cannot be held responsible for non observance of instructions contained in this manual or for the consequences of any procedure not specifically described Using the boiler Before lighting the boiler you are advised t
26. al pump Note Whenever a CH demand is removed an anti cycle mode is initiated which prevents the appliance from firing in CH mode for 5 minutes Ensure that the control is not in this mode by removing power from the control and restoring it after a delay of 10 seconds If the Switch Live input is OK and no lockout or blocking code exists and the control is not in anti cycle mode then replace PCB Fig 32 Fascia Panel 7 SEGMENT DIGITAL DISPLAY BURNER LIT INDICATOR DOT PA N er y CONTROL KNOB o gy net 29 MAINTENANCE RESET LOCK OUT CODES LED LED raULT EFFECT ACTION MAINTENANCE Overheated appliance Water flow failure or Differential check faulty Flame for a short period only No gas or Lockout flame signal No flame Lockout after 5 ignition attempts Flue gas sensor No flame BLOCKING CODES Defective sensor No flame Defective gas valve Flame continues after demand ends Water temperature greater than 105 Sensor temperature differential incorrect Low gas pressure No flame signal on ignition or loss of signal during operation Flue gas temperature greater than 95 Defective flow return or flue sensor 5 sect flame signal after burner is switched off Check no air is in heat system Check external pump operation Check PCB X1C connector Check flow thermistor Check water pressure Check external pump CH system blo
27. ce and system from potential frost damage This can only function if the gas and electricity supplies are maintained E Overheat Protection The appliance incorporates flow and return thermostats which monitor the operating temperature Abnormal temperatures such as overheating will cause the appliance to go to lockout and the LED display will show code 1 Allow the appliance to cool and turn the CH Temperature Control knob fully anti clockwise to the reset position to clear Other Features The following additional features are included in the appliance specification ANTI CYCLE DEVICE When the appliance cycles on its central heating contro thermostat a slow cycle device operates The timer set to 5 minutes is activated after the end of each burn cycle to prevent rapid cycling of the burner CH SOFT START DEVICE After every burner start the burner output stays at low for 30 seconds to ensure smooth heat up of the system and maximum efficiency 23 Z o l lt GA 2 Z o lt 2 SERVICE MODE The appliance enters the SERVICE mode by turning the control knob fully clockwise The LED displays a flashing HI In this mode the appliance runs at the minimum CH output This mode allows the gas valve offset and CO2 emissions to be measured Note The appliance can be placed into maximum output by briefly turning the control knob out of and back into service mode Fig
28. ckage Check no air is in heat exchanger CH system Check flow and return sensors Check wires to sensors not crossed Check gas supply Check gas service cock Check gas valve and lead Check detection electrode lead Check gas supply Check gas valve and lead Check PCB X2A amp X2B connectors Check spark generator spark electrode Check mains earth lead continuity Check flue sensor Check flue system Check no air is in heat exchanger CH system Check external pump Check PCB PCB connectors Check flow return and flue sensors Check wiring to sensors Check PCB X6 amp X8 connectors Check gas valve and lead Check PCB BLOCKING CODES Cont d LED ER FAULT EFFEGT REASON ACTION Check fan Missing or Check mains fan lead amp connector Defective fan No flame Erroneous RPM Check low voltage fan lead amp signal connector Check PCB X3 connector LE PCB error No flame Internal Error Check PCB Activate BCC Turn CH control knob to reset twice No flame to activate Safety system Failure of internal Check PCB failure No flame self checking system amp Check BCC is initialised t BCC error No flame Missing BCC Reseat or replace BCC No demand Check PCB X1A connector No flame Faulty connector Check programmer room thermostat Check water pressure Check external pump CH system blockage Check no air is in heat exchanger CH system Ch
29. d 2 must be connected at a point close to the inlet side of the circulating pump see the diagrammatic layout figure 7 unless laid down differently by the manufacturer The expansion vessel volume depends on the total water system volume and the initial system design pressure For any system an accurate calculation of vessel size is given in the current issue of BS5449 and BS7074 Part 1 Example For an initial design pressure of 0 7 bar the minimum total vessel volume required is 0 063 x Total System Volume Note A higher initial design pressure requires a larger volume expansion vessel The charge pressure must not be less than the static head of the system that is the height of the highest point of the system above the expansion vessel Sealed Water System Fig 7 TANK THERMOSTAT ROOM THERMOSTAT HOT WATER CYLINDER MAKE UP BOTTLE Observe minimum static head requirements AIR RELEASE VALVE I MOTORISED T VALVE RETURN mus ed d NOTE No automatic by pass SYSTEM 3 WAY VALVE FILL POINT HJ NONRETUIN VALVE Pessssessesseoneosensecenasens led H x TERMINAL LOCKABLE PRESSURE BLOCK BALANCING I pume p required However it is p lt recommended to leave one ma radiator open and to fit a Sc exPaNson system bypass in the DHW circuit to ensure pump over run functi
30. d reddening of the skin Safe handling of the appliance This appliance is classed as a two man lift When handling or lifting always use safe techniques o keep your back straight o Bend your knees o Don t twist o Move your feet o Avoid bending forwards and sideways and keep the load as close to your body as possible o Where possible transport the boiler using a sack truck or other suitable trolley o Always grip the boiler firmly and before lifting feel the weights concentrated to establish the centre of gravity repositioning yourself as necessary Appliance category 12 Gas G20 20 mbar Country of destination United Kingdom GB Ireland IE This appliance conforms with the EEC directive 90 396 and consequently it has the right to make use of the Biasi Riva OV brand name Moreover the appliance conforms with the EEC directive 87 308 relative to the prevention and elimination of radio disturbances The appliance is built to comply with the regulation now in force regarding gas appliance s safety and the European regulation now in force relative to safety of household and similar electrical appliances The manufacturer in the continuous process to improve his products reserves the right to modify the date expressed in the present documentation at any time and without prior notice The present documentation is an informative support and it cannot be considered as a contract towards third parties Boil
31. eck flow and return sensors Check wires to sensors not crossed Differential check Water flow rate faulty Flame for 15 too low seconds Error in power Low mains Check mains voltage supply No flame voltage Check PCB connectors MAINTENANCE Check power supply Check PCB X1B connector Check PCB fuse Defective power No light indication supply NOTE RPM SIGNAL FAN SPEED SIGNAL IN REVOLUTIONS PER MINUTE BCC BOILER CHIP CARD A SMALL MICROCHIP THAT PUSH FITS ONTO THE CONTROL PCB AND ALTERS OPERATING PARAMETERS SEE SECTION 7 FIG 31 FAULT CODES 1 4 CAN BE RESET BY FOLLOWING THE PROCEDURE IN SECTION 1 4 5 HOWEVER IF ANY OTHER FAULT CODE IS SHOWING PLEASE CONTACT YOUR INSTALLER OR BIASI UK LTD TECHNICAL HELPLINE 0121 506 1350 31 9 Short Parts List Refer to Figure 33 G C PART NO DESCRIPTION MAKERS PT NO Ignition Electrode Detection Electrode Spark Generator Kit Gas Control Valve Fan Assembly Burner OV 18 Burner OV 30 Heat Exchanger OV 18 Heat Exchanger OV 30 Water Temperature Sensor Flue Sensor Manual Bleed Valve Control PCB User Interface Heat Exchanger Seal Kit MAINTENANCE OV1022100 OV1022101 OV1022102 OV1033100 OV1044100 OV1055100 OV1055101 OV1066101 OV1066102 OV1066103 OV1011101 OV1066104 OV1077100 OV1077101 OV1066105 BENCHMARK No Benchmark GAS BOILER COMMISSIONING CHECKLIST BOILER SERIAL No NOTIFICATION No CONTROLS
32. ed with a digital programmer when setting the times for automatic operation remember that for every ON time there must be an OFF time to follow and that on every occasion you enter a time you must also indicate which days that you want the boiler to follow the timed settings v Some products incorporate an anti cyclonic time delay It is normal when first switching the boiler on for the boiler to operate on heating for a few seconds then switch off After 3 4 minutes has elapsed the boiler will then re ignite and operate perfectly normally vd If you are in any doubts as to the installation or operation of the boiler please read the instruction manuals thoroughly and then if necessary contact Biasi UK for advice and assistance When installing commissioning or servicing a gas appliance that incorporates a pre mix burner and zero Set governor because it is not possible to measure an operating pressure the engineer should first check that the gas supply is metered and ascertain whether it is possible to measure the gas rate If the gas input rate can be measured then the requirements of GSUIR 26 9 can be met including any specific requirements in manufacturers instructions If gas input rate cannot be measured then to satisfy the intent of GSUIR 26 9 the engineer shall measure the combustion quality of the appliance in accordance with BS 7967 or the manufacturers instructions If the engineer does not have the required
33. equipment and no alternative test is specified by the manufacturer then the appliance shall be turned off and disconnected as an un commissioned appliance until such time that equipment is available to undertake such tests Please remember that if you are in any doubt about the installation of this product you can contact our Technical Helpline on tel 0121 506 1350 TABLE OF CONTENTS N eh cA cm zc sch ON Bobi baad Introduction 2 Important Information 2 Control of Substances Hazardous to Health 3 Gas amp Electricity Consumer Council 3 Safety eis ve ek ee ed IR pim 3 Current Gas Safety regulations 3 Electrical Supply 3 Clearances A Ventilation 3 Boiler Logbook 3 Operating Instructions 3 Technical Specifications 6 Gas 6 Performance Data 6 General Specifications 7 Overall Dimensions amp Min Clearances 7 Fitting the Flue System 8 Choice of Flue 8 Anti Pluming Kit 9 Additional Concentric Flue Kits 9 Appliance Hydraulic Circuit 10 Installation Requirements 11 Statutory Requirements 11 Appliance Location 11 Flue Terminal Position 11 Ventilat
34. er installation and commissioning tips v The installation must be carried out bya qualified person who will be responsible for observing the current Regulations Installing the boiler V Do not forget to remove the transit caps and plugs from the boiler connections these are fitted to every boiler v Keep the boiler clear of dust during installation and in particular do not allow any dust or debris to enter the top of the boiler where the flue connection is made It is recommended that you put a dust sheet over the top of the boiler until you are ready to make the flue connection v Remember to release the manual air vent before filling the boiler See the instructions to identify the location of this device v This boiler allows to control the flow temperature of the central heating system at very low levels In case of an underfloor heating system a temperature limiting device e g a safety thermostat is recommended to stop the boiler in case the water temperature exceeds the design temperature v You are strongly advised to flush out the system both cold and hot in order to remove system and installation debris It is also sensible to initially fire and commission the boiler before connecting any external controls such as a room thermostat By this method if you have a subsequent problem following the addition of an external control you can eliminate the boiler from your fault analysis V If the boiler is fitt
35. evice In the event of very cold conditions the pump may operate and the boiler light for a few minutes to protect the appliance and system from potential frost damage This can only function if the gas and electricity supplies are maintained and the control knob on the appliance is set to the STAND BY position This function automatically operates the boiler when the heating system water reaches temperatures below 5 C If either the gas or electricity services is to be isolated during a period when frost is likely the water circuits must be drained ET Boiler overheat Thermostat The appliance is fitted with two thermistors located on the flow and return pipes In the event of overheating the boiler will shut down and the display will show i Allow the boiler to cool then briefly turn the control knob to STAND BY RESET position and then back to an on position within TWO seconds If the fault persists consult a CORGI registered installer Diagnostic Digital Display FASCIA PANEL Figure 1 For fault finding refer to the diagnostic chart shown below together with the notes given in sections 8 3 8 4 and 8 5 Fault Finding Codes In the event of the appliance failing to light refer to the Diagnostics Chart on the next page To RESET the boiler turn the control knob to the STAND BY RESET position and back to an on position within TWO seconds 1 5 General Care The front panel being a powder coated white fi
36. h a suitable inhibitor Such products are available from Fernox and Sentinal Open Vented Water System The boiler must be supplied from an unrestricted water supply taken from a feed and expansion cistern situated at a maximum height of 27 metres 90ft above the boiler The cold feed must be 15mm minimum size The vent must rise continuously and be unrestricted 14 It is important that the relative positions of the pump cold feed and open vent are as shown in figure 9 Domestic Hot Water Cylinder SINGLE FEED INDIRECT CYLINDERS ARE NOT SUITABLE The domestic hot water cylinder must be of the double feed fully indirect coil type Sealed Water Systems The installation must comply with the appropriate requirements of the current issue of BS4814 BS5449 BS6759 BS6798 and BS7074 Part 1 and 2 See figure 7 for a suggested layout Safety Valve Sealed System A safety valve must be fitted to a sealed system It shall be preset non adjustable with a lift pressure of 3 bar incorporating seating of a resilient material a test device and a connection for drain The drain from the safety valve must be routed outside the building must not discharge above an entrance or window or any type of public access area be clear of any electrical fittings and positioned so that any discharge can be seen Expansion Vessel A diaphragm type expansion vessel conforming to the current issue of BS4814 see also BS7074 Part 1 an
37. h of the room sealed flue system are Horizontal flue terminal all orientations maximum 10 m 393 in Horizontal flue terminal rear exit minimum 250 mm 10 in Vertical flue terminal maximum 12 m 472 in Vertical flue terminal minimum 600 mm 23 5 in The equivalent flue length must not exceed the maximum values stated b The standard terminal must always be fitted horizontally horizontal ducts must have a minimum continuous fall towards the appliance of 1 5 This ensures condensate runs back into the appliance from the flue system The vertical terminal must always be used if a vertical outlet is required C The concentric flue system must use either a flanged elbow or a raised horizontal flue Socket at the entry exit to the appliance d All joints must be correctly made and secured in accordance with the installation instructions When cutting ducts avoid swarf uneven and sharp edges to maintain duct integrity Refer to Figures 2 and 3 to determine which option kits are required before commencing the installation Instructions for installing the appliance with a horizontal flue and straight extension ducts are included in the main text of these instructions section 4 7 z o I r Z o lt lt Appliance Hydraulic Circuit Fig 4 BURNER amp BURNER FLANGE 10 CH FLOW d CH RETURN FLUE PRODUCTS PRIMARY HEAT EXCHANGER CH
38. he overall acceptable length of the flue system as follows 45 reduce in length by 0 5 90 reduce in length by 1 m Anti pluming kit If the standard horizontal flue kit is likely to cause nuisance to neighbours or buildings because of excess pluming then this particular flue kit raises the flue gas outlet point to a higher elevation with the minimum amount of changes The flue gas duct is teed off from the concentric part and the air in take remains at the lower level see Figure 3 2 If choosing this option then the external flue duct length should be taken into account when calculating equivalent flue length For installation details refer to the flue kit instructions Fig 3 2 FLUE LENGTHS MAX A 8 5m MIN A im B 5m MIN B 0 4m MAX A B 9 5m ET NN Dig 45 0 75m 26 Additional Concentric Flue Kits The following additional concentric kits are available as optional extras Flue Extension Ducts 1 m and 500 mm long each duct extends the flue length by up to 950 mm and 450 mm respectively Raised Horizontal Flue For use with elevated horizontal flues For installation details refer to the instructions provided with the individual flue kits These optional kits may be used with the standard flue kits to produce an extensive range of flue options providing that the following rules are strictly obeyed a The maximum minimum permissible lengt
39. ifications Gas Categories These appliances are certified to comply with the requirements of EN 483 and EN 677 for use in GB and IE Great Britain and Ireland using the following gas categories Biasi RIVA OV 30 Biasi RIVA OV 18 leu G20 with a governed gas supply at 20 mbar 8 in wg inlet pressure DR Performance Data Biasi RIVA OV 30 Central Heating Output Non Condensing 80 60 Max kW 30 0 BTU h 102400 Min kW 8 2 BTU h 28000 Condensing 50 30 C Max kW BTU h 32 1 109500 Max Rate kW 30 4 BTU h 103700 kW 33 8 BTU h 115300 Min Rate kW 7 6 BTU h 26000 kW 8 4 BTU h 28600 Gas Rate after 10 mins operation hot Max m3 h 3 22 Max ft3 h 113 7 Other Specifications Seasonal Efficiency 96 Seasonal Efficiency sepeu Band A NOx Classification Class 5 Min Cen Heating Press Bar 0 1 im H20 Max Cen Heating Press Bar 3 0 Max Cen Heat Flow Temp C Min Cen Heat Flow Temp C Performance Data Biasi RIVA OV 18 Central Heating Output Non Condensing 80 60 Max kW BTU h Min kW BTU h Condensing 50 30 C Max kW BTU h Max Rate Net kW BTU h Gross kW BTU h Min Rate Gas Rate after 10 mins operation hot m3 h ft3 h 1 95 68 9 Max Max Other Specifications Seasonal Efficiency Seasonal Efficiency Band NOx Classification Class Min Cen Heating Press Bar 0 1 1m Hz0 Max Cen
40. ing that the duct joints are not disturbed and that the external sealing ring is seated against the outside wall f Finally use the internal sealing ring to make good the internal hole Check that the external wall sealing ring and the terminal is correctly located on the outside wall from outside the building 148 Electrical Connections Connect the electricity supply and external controls using suitable mains cable as follows 20 connections in the electrical plug provided referring to Figure 16 Live supply to L1 Neutral and Earth as indicated Check that L1 and L3 are linked To provide correct cable retention fit the piece of tubing supplied over the cable as it passes through the clamping arrangement The cable will be held in position as the plug cover is fitted If a programmer room thermostat is to be fitted remove the red link between L1 and L3 and connect the device across these terminals Any external controls fitted must be rated at 230V 50Hz and have volt free contacts Fig 16 Fig 17 Fully Pumped S Plan Fig 18 Fully Pumped Y Plan Fig 19 Fused swached iselesor Or 4 200 4 Room 5 thermostat 5 2 T6 oom Mermostat l l L641A p gt Cylinder z thermostot O 30 5 Optional e l V4043H Frost thermostat i Heating Opens heoting volve circuit only lt 910321 923 V4043H z Hot water valve Ze Fure live 1 Swiched live
41. ion Requirements 12 Condensate Disposal 13 Gas Supply 13 Central Heating System 13 Draining Tap 13 Safety Valve Open Vent System 14 Pump ERR ERIS 14 Flow Rate 14 Water Treatment 14 Open Vented Water System 14 Domestic Hot Water System 14 Sealed Water Systems 14 Safety Valve Sealed System 14 Expansion Vessel 14 Routine Servicing 25 Combustion Check 25 Gas Control Valve Fan amp Burner Assy 25 Burner RR kes 25 Ignition amp Detection Electrodes 26 Combustion Chamber amp Heat Exchanger 26 Condensate Drain 26 Sealed Water System 27 Re assembly amp Re commissioning 27 Final Checks 27 1 4 1 1 4 2 1 4 3 1 4 4 1 4 5 1 5 1 6 1 7 1 8 3 18 To light the boiler 3 Control of Water Temperature 4 To turn the boiler off 4 Boiler overheat Thermostat 4 Diagnostic Digital Display 4 General Care 4 Routine Servicing 4 Warning 525232 wx aa RR iom a 5 Pluming from Terminal 5 Pressure Gauge 15 Water Makeup 15 Filling a Sealed Water System
42. irritation to the skin seek medical attention Gas and Electricity Consumer Council Energywatch Energywatch is an independent organisation which protects the interests of gas users If you need advice concerning energy issues they may be contacted on their consumer help line number 08459 060708 or via their web site http www energywatch org uk 1 2 Safety Read these user manual instructions and the user label fitted on the decorative front panel carefully before attempting to operate the appliance Comply with all applicable warnings Do not interfere with any sealed components and use the appliance only in accordance with these instructions Current Gas Safety Installation and Use regulations or the rules in force It is the law that all gas appliances are installed by a competent person in accordance with the above regulations Failure to install appliances correctly could lead to prosecution It is in your own interest and that of safety to ensure that the law is complied with If the appliance is damaged turn off the appliance and consult a CORGI registered installer If it is known or suspected that a fault exists on the appliance it MUST NOT be used until the fault has been rectified by a competent person 1 2 2 Electrical Supply This appliance must be earthed Supply 230V 50Hz fused at 3A This method of connection to the mains supply must facilitate complete isolation of the appliance Either
43. length of 755mm 29 in suitable for room sealed applications The duct assembly is connected to the appliance via a turret which can be orientated to provide different horizontal duct directions Extension ducts may be fitted in accordance with and up to the maximum dimensions stated in these instructions A vertical concentric outlet kit is also available for installations where an outside wall is not accessible or where it is desired to fit the duct through the roof Installation using the horizontal or vertical duct is described in the main text of these instructions and additional information is provided in the flue kit for the vertical installation option Note If the vertical outlet kit is to be used access to the roof is necessary A special anti plume kit is available For more information contact BIASI UK Ltd Technical helpline 0121 506 1350 ONLY BIASI APPROVED FLUE KITS OR EXTENSIONS MAY BE USED WITH THESE APPLIANCES EE Important Information IT IS A STATUTORY REQUIREMENT THAT ALL GAS APPLIANCES ARE INSTALLED BY COMPETENT PERSONS i e CORGI REGISTERED INSTALLERS IN ACCORDANCE WITH THE SAFETY INSTALLATION AND USE REGULATIONS CURRENT EDITION FAILURE TO COMPLY WITH THESE REGULATIONS MAY LEAD TO PROSECUTION These appliance have been tested and certified in order to satisfy the necessary European Directives and comply with the latest Building Regulations including the effiency requirements of the SEDBUK
44. lug to suit 4 off Manual Handling Note During the appliance installation it will be necessary to employ caution and assistance whilst lifting as the appliance exceeds the recommended weight for a one man lift Take care to avoid trip hazards slippery or wet surfaces 4 2 Preparing the Wall a Fix the paper template in the required position ensuring that the necessary clearances are achieved Ensure squareness by hanging plumb line b Mark the position of the wall mounting plate fixing holes 4 c Mark the position of the flue outlet For side flue installation extend the flue centre line on to the sidewall where the flue length exceeds 775 mm a flue slope angle of 2 5 needs to be taken into account Refer to Figure 9 Remove the paper template d Cut the hole in the wall for the air flue duct preferably with a core boring tool The hole must be horizontal and not be less than 100 mm in diameter If the hole is not accessible from outside its minimum diameter must be sufficient to allow insertion of a wall liner 130 mm 5in which must be sealed in position with mortar or equivalent 2 Drill the four fixing holes using 6mm drill and insert the wall plugs provided f Hang the wall mounting plate using four fixing screws ensuring that it is level Mounting the appliance Refer to Figures 10 and 11 a Remove the outer panels as shown in fig 11 Lift the appliance into position approximately
45. mm mm mm Fig 2 At lt D 97mm D 97 mm I E 100mm E 100 mm D 326s E 694mm F 694 mm F 4 er G 200mm G 200 mm K H 540mm 540 mm lt 400mm 400 200mm J 200 mm bi K 5mm K 5 mm L L 5mm L 5mm M M 200mm 200 mm Z Q I 2 BERT Fitting the Flue System Refer to the assembly instructions contained within the chosen flue kit packaging for the correct assembly and installation In general it has to be taken in consideration that the horizontal sections of the flue pipe must have an horizontal sloping not less that 1 5 deg 25 mm per metre towards the boiler In the standard horizontal flue kit Fig 3 the flue pipe is angled within the air duct therefore the air duct must be horizontally installed If one or more extensions have to be used they must be adequately supported so that there is not sag in the flue pipe and minimum fall of 1 5 deg 25 mm per metre over the whole length towards the boiler is ensured Before fitting the flue system ensure that the flue gasket is fitted to the boiler Choice of flue The following flue kits are available for connecting to the boiler Standard horizontal flue kit Fig 3 Co axial 60 100mm nominal length 1m This kit is normally supplied with the boiler and can be fitted to allow discharge to the rear or either side of the boiler via the flanged boiler adapter elbow Minimum length required is 250mm
46. nish should be cleaned with a damp cloth and mild detergent Do not use abrasive cleaners 1 6 Routine Servicing To ensure continued efficient operation of the appliance it is recommended that it is checked and serviced as necessary at regular intervals The frequency of servicing will depend upon the particular installation conditions and usage but in general once a year should be adequate It is law that any service work must be carried out by a competent person such as British Gas or other CORGI registered personnel RESET LOCK OUT CODES LED CODE FAULT EFFECT REASON Overheated appliance Water temperature greater than 105 C Water flow failure or Differential check faulty Sensor temperature differential incorrect Flame for a short period only No gas or Lockout flame signal No flame Low gas pressure Lockout after 5 ignition attempts No flame signal on ignition or loss of signal during operation Flue gas sensor No flame Flue gas temperature greater than 95 FAULT EFFECT REASON Defective sensor No flame Defective flow return or flue sensor Defective gas valve 5 sec flame signal after burner Flame continues after demand ends is switched off Defective fan No flame Missing or Erroneous RPM signal PCB error No flame Internal error Activate BCC No flame New BCC Safety system failure No flame Failure of internal self checking system BCC error No flame Incorrect missing BCC No flame
47. o have a professionally qualified person check that the installation of the gas supply is gas tight is of the correct gauge for the flow to the boiler is fitted with all the safety and control devices required by the current Regulations Ensure that the installer has connected the condensate outlet to a suitable drain pipe On detecting the smell of gas don t operate any electrical switches the telephone or any device that may produce sparks vd 4 vd open the windows and doors at once to create a draught of air which will purge the area shut off the gas cocks get the assistance of a qualified person Do not touch the appliance with parts of the body that are wet or damp and or bare feet Do not block or modify the condensate outlet and pipework In the case of structural work or maintenance near the exhaust duct and or fume exhaust devices or their attachments turn off the appliance On completion of the work have a professionally qualified person check their efficiency Repairs under guarantee must be carried out only by an approved engineer using genuine spare parts Thus do no more than switching off the boiler yourself see the instructions Your boiler allows heating up of water to a temperature less than boiling point must be connected to a central heating system and or a hot water supply system compatible with its performance and output can be used only for those purposes for which i
48. onality The water content of the boiler is given in 2 3 General Specifications Expansion Vessel Requirements Vessel charge and bar 0 5 0 75 1 0 1 5 initial system pressure Total water content of system using 8 L 1 54 gal capacity L 84 73 50 expansion vessel supplied with appliance For systems having a larger capacity multiply the total system capacity in litres gallons 0 0833 0 093 0 109 0 156 by these factors to obtain the total minimum expansion vessel capacity required in litres ga Pressure Gauge A pressure gauge with a set pointer and covering at least 0 to 4 bar 0 to 60 Ib in shall be fitted permanently to the system in a position where it can be seen when filling the system Water Makeup Provision should be made for replacing water loss from the system using a make up bottle mounted in a position higher than the top point of the system connected through a non return valve to the return side of either the heating circuit or the hot water cylinder CH DHW SWITCHED LIVE VESSEL Alternatively provision for make up can be made using a filling loop Filling a Sealed Water System Provision for filling the system at low level must be made see figure 7 There must be no permanent connection to the mains water supply even through a non return valve CONTROLS As a minimum it is recommended that a room thermostat be installed to control the appliance Thermostatic radiator
49. orms part of the industry s Benchmark code of practice for the installation commissioning and servicing of central heating systems Please ensure that the logbook is fully completed and left with the customer for future reference along with Users Instructions and this Installation and Servicing Instruction manual MAINTENANCE 6 Routine Servicing To ensure continued efficient operation of the appliance it is recommended that it is checked and serviced as necessary at regular intervals The frequency of servicing will depend upon the particular installation conditions and usage but in general once a year should be adequate It is the law that a competent person such as British Gas or other CORGI registered personnel must carry out any service work Service the appliance by following the full procedure detailed below 6 1 Combustion Check The appliance incorporates a flue sampling point on the appliance flue elbow or appliance vertical flue adaptor If the service engineer has suitable equipment to analyse the flue gas the plastic cap may be removed and an adequately sized sample tube fitted Operate the appliance in Service mode see section 5 7 After ten minutes operation check the CO2 CO values and compare with those figures stated in section 2 3 Do not forget to replace the plastic cap after use When the appliance is operating at maximum output check that the gas supply pressure is 20 0 mbar using the inlet p
50. osition and repeat step d See also section 5 4 When the boiler has lit the display will show H Allow the appliance to run for at least 10 minutes and check that the gas supply pressure measured at the appliance inlet pressure test point is 20 1 mbar eS 2 XEM Final Checks a Turn off the appliance and remove the manometer Tighten the appliance inlet pressure test point screw Re light the burner and test for gas tightness b Fit the appliance casing as illustrated in Figure 24 Position and secure both side panels and the decorative front cover with screws at the top and bottom Set the CH Temperature Control to the required setting Set the room thermostat if fitted to the required setting Refer to hot water cylinder instructions If the boiler is connected to a hot water cylinder the CH temperature has to be set to high EM Lockout Reset Indication In the event of failure during an ignition sequence b attempts the LED displays fault code 3 In order to reset the boiler turn the CH Temperature Control anticlockwise to STANDBY position and then back to ON within two seconds Fig 23 Inlet Pressure Test Point GAS INLET PRESSURE TEST POINT GAS SERVICE COCK 5 5 Frost Protection The appliance is fitted with a frost protection device In the event of very cold conditions the external pump may operate and the appliance light for a few minutes to protect the applian
51. ove ground or balcony level 300 necessary for a room sealed appliance J From a surface facing a terminal 2500 providing that the minimum clearances are K From a terminal facing a terminal 2500 maintained L From an opening in the car port If the appliance is installed in a room or e g SOR Window due dwelling NO M Vertically from a terminal in the same wall 500 deris Spaca Witi tii Tuer N Horizontally from a terminal in the same wall300 liances th regate maximum rated e aggreg O Above the roof pitch with roof slope less input shall be used to determine the air vent than or equal to 30 350 free area BS 5440 2 Table 2 Above the roof pitch with roof slope d Where an open flued system is used and the more than 309 600 flue duct air inlet is within a compartment H From wall face 600 then high and low level air vents are Q From above or to side of an opening 300 necessary in the compartment the size of the vents should be calculated in accordance Wherever practicable to do so the flue should be with BS 5440 2 Table 2 extended beyond the perimeter of the balcony Consideration should be given to adding protection against condensate to the adjacent structure 12 ER Condensate Disposal The condensate drain connection is suitable for either 21 5 mm or 22 mm plastic push fit o
52. r adhesive overflow pipes and fittings It should be piped to drain preferably within the building maintaining a continuous 2 5 fall away from the appliance If the drain is routed to outside it should be to a drain or soak away and any external pipe work should be in 32 mm Insulation to protect from freezing in cold weather conditions is also advisable If the appliance is installed in a garage all pipe work should be in 32 mm Ensure that the condensate discharge system complies with any local regulations in force FEN Gas Supply The Gas Supplier should be consulted at the installation planning stage in order to establish the availability of an adequate supply of gas b An existing service pipe MUST NOT be used without prior consultation with the Gas Supplier C A gas meter can only be connected by the Gas Supplier or by their contractor d An existing meter and or pipe work should be of sufficient size to carry the maximum appliance input plus the demand of any other installed appliance BS 6891 1988 A minimum of 22 mm diameter pipe work is recommended within 1 m of the appliance gas cock e Natural gas appliances The governor at the meter must give a constant outlet pressure of 20 mbar 8 in wg when all appliances on the system are running f The gas supply line should be purged WARNING Before purging open all doors and windows also extinguish any cigarettes pipes and any other naked lights
53. ressure test point located on the gas cock Before commencing any service operation ISOLATE the mains electrical supply and TURN OFF the gas supply at the main service cock Gas Control Valve Fan amp Burner Assembly Refer to Figures 25 26 27 and 28 a Remove the hinges and take off the hinged front panel b Remove the decorative front cover 4 Screws c Remove the sealed chamber door 6 screws d Disconnect the igniter plug earth lead and detection plug from the igniter and detection electrodes e Unscrew the screw holding the gas valve lead plug and disconnect the plug f Disconnect the electrical leads from the fan 2 plugs g Undo the nut holding the gas valve feed pipe to the gas isolating cock and disconnect h Remove the gas control valve fan amp burner assembly by carefully pulling forward the combustion chamber front and rotating the assembly anticlockwise so that the burner points forward then disengage the gas valve feed pipe from the casing by lifting up the assembly Take care not to damage the insulation i The assembly may then be inspected j Re assemble in reverse order ra Burner Inspect and if necessary clean the main burner ports using a soft brush or vacuum cleaner Do not use a wire brush or any abrasive material Fig 25 Control Panel Fig 26 Combustion Case Panels 25 MAINTENANCE MAINTENANCE Ignition amp Detection Electrode
54. s a Inspect the ignition and detection electrodes in situ If necessary clean using a soft brush If either the electrode or the ceramic insulation shows signs of damage or wear replace the electrode s and their gasket b Check that the alignments of the ignition and detection electrodes are correct Refer to Figure 29 Adjust by carefully bending the tip of the electrode rod whilst supporting the base of the rod Do not put any pressure on the ceramic insulation ra Combustion Chamber amp Heat Exchanger Inspect the inside of the combustion chamber for debris If necessary clean the inside of the Fig 27 MANUAL BLEED VALVE BURNER ASSEMBLY IGNITION ELECTRODE IGNITION MODULE CONDENSATE DRAIN PIPE FAN OFFSET ADJUSTMENT SCREW GAS CONTROL VALVE GAS VALVE LEAD AND PLUG Fig 28 Gas Control Valve Fan FAN amp Burner Assembly COMBUSTION CHAMBER FRONT COVER BURNER INSULATION 26 tubes with a soft brush Do not brush the insulation at the rear check the integrity of the combustion chamber insulation panels if damaged they will require replacement 66 Condensate Drain The condensate Drain has removable cap Figure 30 which allows the removal of debris that may be caught within it Place a bowl under the cap to catch the condensate and remove the cap Any debris inside will be expelled at this point Replace the cap ensuring good seal is made Discard the condensate and debris CH R
55. s may be used with any certified programmer room thermostat as 16 RECOMMENDATION ONLY MOTE PUMP REQUIRES OPTIMISATION TO PREVENT PUMP OVER INTO FEED EXPANSION TANK r EXPANSION Tr AUTOMATIC AIR VENT SYSTEM BYPASS OCKSHELO VALVE MOTORISED CHF FEO A EXPANSION TANK 4 EXPANSION described in section 4 For further information contact BIASI UK Ltd Technical helpline 0121 506 1350 External Controls d The method of connection to the mains supply must facilitate complete electrical isolation of the appliance Either a 3A fused three pin plug and un switched shuttered Socket outlet both complying with BS 1363 or a 3A fused double pole switch having a 3 mm contact separation in both poles and serving only the boiler and its external controls may be used 4 Appliance Installation Before installing the appliance check that the chosen location is suitable section 3 2 and that the requirements for flue position section 3 3 and minimum clearances Figure 2 are satisfied nma Unpacking the Appliance The appliance is supplied in one box Flue kits are provided separately the various flue kits available as described in sections 2 5 2 6 Unpack the boxes and check the contents Complete appliance Paper wall mounting template Wall mounting plate User and Installation manual Hardware pack containing 50 mm x No 10 wood screw 4 off Rawl p
56. semble the air flue ducts as shown in the flue instructions c Construct the correct flue length by building the flue out from the appliance Ensure that the flue and air seals are correctly fitted before assembly and that each section is fully engaged The flue length is measured from the centreline of the appliance flue outlet to the inside of the external wall sealing ring In most cases it will be possible to achieve the required flue length without cutting the ducts however where necessary the plain ends of the extension ducts may be cut Never cut the swaged end and always ensure that the cut is square and free of burrs or debris NOTE IT IS ESSENTIAL THAT THE TERMINAL IS FITTED THE CORRECT WAY UP See flue kit Instructions i e rain shield at the top Fig 14 Measuring the exact flue length TOTAL FLUE LENGTH FROM FLUE OUTLET CENTRE TO OUTSIDE WALL FACE LENGTH L OUTLET INTERNAL Dia 60mm Installing the air flue duct from inside the room a Push the terminal through the wall liner taking care to ensure that the terminal is the correct way round and the external wall sealing ring does not become dislodged b Assemble the flue system extension ducts as necessary referring to Figure 15 Pull the flue system towards the appliance to seat the external sealing ring against the outside wall ensuring that the duct joints are not disturbed d Use the internal sealing ring to make good the in
57. t has been specially designed must not be touched by children or by those unfamiliar with its operation must not be exposed to weather conditions 4 During the operation it is quite normal that the boiler produces a white plume of condensation vapour from the flue terminal This is due to the high efficiency of the appliance and may be particularly evident with low outdoor temperatures Safe handling of substances Biasi products are manufactured in accordance with ISO 9000 and do not and will not contain any hazardous materials or substances such as asbestos mercury or C F C s The appliance packaging does not contain any substances which may be considered a hazard to health Combustion chamber panels Material mineral fibres Known hazards Some people can suffer reddening and itching of the skin Fibre entry in to the eye will cause foreign body irritation which can cause severe irritation to people wearing contact lenses Irritation to respiratory tract Precautions Dust goggles will protect eyes People with a history of skin complaints may be particularly susceptible to irritation High dust levels are only likely to arise following harsh abrasion In general normal handling and use will not present high risk follow good hygiene practices and wash hands before touching eyes consuming food drinking or using the toilet First aid medical attention must be sought following eye contact or prolonge
58. ternal hole and check that the terminal is correctly located on the outside wall Where possible this should be visually checked from outside the building Figure 15 shows a view of the flue system correctly installed 19 Z m lt 2 130mm Dia HOLE WITH WALL LINER ge Fig 15 INTERNAL WALL Installing the flue system SEALING RING from inside the room EXTERNAL WALL SEALING RING FIBRE SEAL FITTED 1 INSERT ASSEMBLED FLUE SYSTEM P Z lt lt 3 SLIDE INTERNAL WALL M 2 ALIGN ASSEMBLED SEALING RING EXTERNAL FLUE SYSTEM ELBOW WALL TO WALL TO APPLIANCE AND FORM A GOOD SEALING e Finally locate and secure the elbow to the Wire the cable s into the appropriate appliance using the four screws provided Installing the Air Flue Duct from outside the building Flue hole diameter 100 mm wall liner not necessary Secure the flue elbow with seal to the appliance using 4 screws b Fit external wall sealing ring over flue and then from outside the building push the flue system through the wall taking care to ensure that the terminal is the correct way around C Loosely fit the internal wall sealing ring over the inside end of the flue d Assemble the flue system extension ducts as necessary referring to the flue kit instructions and fit to the flue elbow e Fit the flue terminal to the flue system ensur
59. ternal length should be kept as short as possible and not exceed 3000 mm Protection from freezing in cold weather conditions is also advisable Ensure that the condensate discharge system complies with any local regulations in force The drain pipe material should be resistant to acid with a pH less than 6 5 Suitable materials for the condensate drainage pipe are PVC UPVC ABS PP or PVC C In exceptional circumstances such as when a boiler is installed in a basement without drainage it may be necessary to install a condensate pump to carry condensate up to ground drain level Such products are available from Grundfos Pumps Ltd on 01525 850000 and Pump House on 0115 922 2211 Condensate Connections Fig 13 y WASTE STACK 25 CONDENSATE DRAIN MUST BE 2 022 CONDENSATE DRAIN MUST BE 2 022 SINK WASTE Air Flue Duct Installation For correct flue installation please refer to the installation instructions that are provided with the individual flue kit as described in sections 2 5 2 6 a Measure the required flue length as shown in Figure 14 Refer to section 2 5 to determine whether any extension kits are required Installations using only the standard ducts or standard ducts with straight extensions are described this section Installation instructions for all other flue systems are included in the various flue kits Ensure that all inner and outer tube sealing rings are provided and as
60. th either sealed or open vented central heating systems The appliances incorporate a microprocessor based fully modulating pre mix air gas ratio control system with direct burner ignition which provides a modulated heat output to central heating CH demand The heat exchanger is constructed from stainless steel and there is the option for routing the flow and return connections either via top or bottom connections The appliances may be used with any certified mains voltage room thermostat and can operate without the need for an automatic bypass valve however if thermostatic radiator valves are installed it is recommended that one radiator is fitted with lockshield valves normally in the bathroom to allow the pump overrun facility to operate correctly The Biasi Riva OV 18 provides central heating at outputs between 5 9kW 20 100 BTU h and 19 3kW 65 900 BTU h The Biasi Riva OV 30 provides central heating at outputs between 8 2kW 28 000 BTU h and 32 1kW 109 500 BTU h The appliances also incorporate frost protection as standard however users are reminded that this is not operational when the electrical supply to the appliance is isolated Each appliance features an attractive white powder coated casing with an inset control panel All flue systems are white powder coated to give an attractive appearance to the installation A standard horizontal concentric air flue duct terminal is available maximum duct
61. tighten the inlet pressure test point sealing screw 8 _ sos 9 Test for gas tightness Fig 30 Condensate Drain 69 Final Checks a Ensure the sealed chamber door is secure with the six fixing screws GE b Re fit all decorative casing panels Return all appliance and external controls if PIPE RETAINING fitted to their original settings CLIP FLOW TUBE TRAP TUBE LOCK NUTS DRAIN SUMP CAP CONDENSATE DRAIN 27 MAINTENANCE 7 nternal Wiring Diagrams Fig 31 Functional Flow Wiring Diagram L3 CH switch live ternal eg Qun pump ur L N mains VTL OW GRITN LL PONER BROWN RIUF MAINS YLLLOW GRLEN EXTERNAL PUMP GAS VALVES NAN GG gas valves 230 Vac IGNITER FLAME SENSOR em spark generator 230Vac V GRAY ex burner imm Deem Sen d H X4 o z lo lt E o z GL o ek Di o gt MV DHW tank a thermostat To DHW tank SS GE Xe thermistor DARK RIUF DARK BLUE YELLOW 1 YELLOW E Return temp thermistor NIC 5kQ LOW RE URN A 3 Flow temp thermistor s 212 H55 ARA E Ka A Sko Flue temp thermistor FAN FLU CONTAO NT 00000 000000 28 8 Fault Finding 18 1 General Before looking for a fault condition check that The mains electrical supply is turned on
62. ting is required The sealed ends must be removed before connecting to the heating system pipes The upwards pipes may be used for connecting to a vent pipe open system or fitting to an automatic air vent sealed system The remaining pipe must be solder sealed Important Note When routing pipes N from below the flow and return sensors have to be removed from the upwards pipes and reconnected to the downward pipes Fig 4 flow is nearest to the front c Commission the central heating system as described in section 5 1 and then proceed to section 4 5 145 Gas Connections Refer to Figure 12 18 Service Connections Fig 12 CH FLOW CH RETURN CH FLOW OPTIONAL CH RETURN OPTIONAL MAINS GAS INLET CONDENSATE OUTLET Connect the gas supply pipe to the gas service cock It is recommended that a minimum of 22 mm diameter OD copper pipe be used to within 1000 mm of the gas service cock 146 Condensate Connection Refer to Figure 12 Connect preferably a 22 mm plastic push fit or adhesive overflow pipe to the condensate outlet It should be piped to drain preferably within the building maintaining continuous 2 fall away from the appliance Note The internal trap has seal of 150 mm therefore an external trap is not required 32 mm pipe should be used for external pipe work or if the appliance is installed in a garage If the drain is routed externally to a drain or soak away then the ex
63. valves may be fitted to the system however they must not be fitted in the room where the room thermostat is fitted There must be at least one radiator installed with lock shield valves that should not be closed Further guidance can be obtained from the Domestic Heating and Hot Water Guide to the building regulations 15 Z o m lt 2 Z m lt Open vent water system with flow and return connected to bottom COLD WATER STORAGE ri d TO DRAIN pipes OFF Fig 8 g THERMOSTAT H H E ne a MOTWATER Ww CYUNDER 1 H H H TERMINAL ana ORAIN qu BLOCK H H H l ROOM H E THERMOSTAT 03 NOTE No automatic by pass required However it is recommended to leave one radiator open and to fit a system bypass in the DHW circuit to ensure pump over run functionality Open vent water JEG system with flow and return connected to top room pipes Fig 9 Electricity Supply a Wiring external to the appliance must be in accordance with the current LEE Wiring regulations BS 7671 for electrical installation and any local regulations which apply b The mains cable must be at least 0 75 mm2 24 0 2 mm PVC insulated to BS 6500 table 16 c THIS APPLIANCE MUST BE EARTHED Failure to provide satisfactory earth connection will result in appliance malfunction The RIVA OV appliance

"user manual"

Contents

Download Pdf Manuals

Related Search

Related Contents

&quot;user manual&quot;

Contents

Download Pdf Manuals

Related Search

Related Contents

"user manual"