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Grant Vortex Eco External and External System Condensing Oil Boiler Range Installation and Servicing Instructions UK | DOC 0125 | Rev 1.0 | December 2019...
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This manual is accurate at the date of printing but will be superseded and should be disregarded if specifications and/or appearances are changed in the interests of continued product improve- ment. However, no responsibility of any kind for any injury, death, loss, damage or delay however caused resulting from the use of this manual can be accepted by Grant Engineering (UK) Limited, the author or others involved in its publication.
CONTENTS INTRODUCTION FLUE SYSTEM AND AIR SUPPLY How a condensing boiler operates Air supply Boiler description Plume diverter kit Flue options Conventional flue systems Boiler components External vertical conventional flue (Green System) TECHNICAL DATA External horizontal conventional Boiler technical data flue (Green System) Sealed system data Flue clearances...
Refer to Section 7. All boilers are supplied with the control panel and burner factory fitted. All the models in the current Grant Vortex Eco range of boilers are designed to comply with the maximum NOx emissions* under the Energy-related Products Directive (ErP).
RBS36XS) and 3/8” to 1/4” BSP male adaptor (product code: Service/Test Switch (External Modules only) Z3003602) are available to purchase from Grant UK, for two-pipe oil supply systems. A Service switch is fitted to the control panel to allow the Service Engineer to test-fire the boiler.
The data given above is approximate only and is based on the boiler being used with a low level balanced flue. The above settings may have to be adjusted on site for the correct operation of the burner. Gas Oil is NOT suitable for use with Grant Vortex boiler range The flue gas temperatures given above are ± 10%.
Oil storage tanks should comply with the following standards: • ¼ʺ isolating valve (product code: ISOLATION1/4) • Plastic tanks OFT T100 These are available to purchase from Grant UK. • Steel tanks OFT T200 Metal braided flexible fuel hoses should be replaced ANNUALLY when the boiler is serviced.
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Figure 3-1: Single pipe (gravity) system Figure 3-2: Two pipe system Figure 3-3: De-aeration device system Key to oil supply diagrams Oil tank Oil filter (15μm max. filtration size) Non-return valve Isolating valve Fire valve sensor De-aerator* Oil strainer Oil pump Appliance isolation valves Fire valve to BS5410-1 Burner...
• ¼ʺ isolating valve (product code: ISOLATION1/4) port and that the plastic plug is discarded. These are available to purchase from Grant UK. The burner fuel pump is supplied factory set for use with a single 3.1.5 SINGLE PIPE (SUCTION) SYSTEM WITH pipe (gravity) oil supply system.
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¼ʺ isolating valve (product code: ISOLATION1/4) Fit the ¼ʺ isolating valve (supplied with the boiler) to the end These are available to purchase from Grant UK. of the rigid oil supply pipe using a fitting to suit the pipe size and type (not supplied).
Failure to install and commission appliances correctly may ! WARNING ! invalidate the boiler guarantee. Installation of a Grant Vortex boiler must be in accordance with Before starting any work on the boiler or fuel supply, the following recommendations: please read the Health and Safety information given in •...
The Grant Vortex boiler is compatible with both copper and plastic Push the end of the flue terminal section or flue extension pipe. Where plastic pipe is used it must be of the oxygen barrier...
! NOTE ! net and for Fernox products visit www.fernox.com. Grant UK strongly recommends that a Grant Mag One in-line magnetic filter/s (or equivalent*) is fitted in the heating system Pipework and cables can be routed into the enclosure via pipework.
PIPE CONNECTIONS WATER CONNECTIONS WATER CONNECTIONS - SEALED SYSTEM MODELS The flow and return pipework can exit the boiler enclosure either through the pre-cut openings provided in both sides (under the A 15 mm discharge pipe must be connected to the safety valve movable cover plates) and through the wall when installed against the building, down and through the pre-cut openings provided outlet connection.
WATER CONNECTIONS AND THERMOSTAT PHIAL POSITIONS Thermostat Heating Flow Heating Return Phials Thermostat Phials Heating Flow Heating Return Air Vents Air Vent Figure 5-3: Vortex Eco External System 15/21 and 21/26 water Figure 5-1: Vortex Eco External 15/21 and 21/26 water connections and thermostat phial positions connections and thermostat phial positions Heating Flow...
CONDENSATE DISPOSAL GENERAL REQUIREMENTS PIPEWORK When in condensing mode the Grant Vortex boilers produce Condensate disposal pipework must be plastic (plastic waste or condensate from the water vapour in the flue gases. overflow pipe is suitable). This condensate is moderately acidic with a pH value of around ! NOTE ! 3.27 (similar to orange juice).
• If there is any discharge of condensate from the overflow gulley or soil stack, is not covered by the Grant product outlet, this could indicate a blockage (possibly due to guarantee.
CONDENSATE DISPOSAL INSPECTION AND CLEANING PIPEWORK OF TRAP The condense trap outlet is at an angle of 48° below the The trap must be checked at regular intervals (e.g. on every horizontal. This is to automatically gives a 3° fall on any annual service) and cleaned as necessary to ensure that it is clear ‘horizontal’...
SEALED SYSTEM ! NOTE ! REQUIREMENTS All Grant Vortex Eco models are suitable for use with sealed Ensure that the expansion vessel used is of sufficient size systems complying with the requirements of BS EN 12828, BS EN for the system volume.
7.1.4 FILLING LOOP Ensure that the flexible filling loop is connected and that the double check shut off valve connecting it to the water supply Provision should be made to replace water lost from the is closed. A valve is open when the operating lever is in line system.
SYSTEM MODELS ! NOTE ! All System models have the following sealed system components factory fitted (refer to Figure 7-3): • A diaphragm expansion vessel complying with BS 4814, pre- The air pressure in the vessel must be checked annually. charged at 1.0 bar.
GENERAL grommet in the back of the control panel, through the cable Grant Vortex Eco External models require a ~230V 1ph 50Hz clamp and connect to the boiler control panel terminals as supply. It must be protected by a 5 Amp fuse.
(timer, room thermostat or ! NOTE ! programmer). For total system protection against freezing, particularly during extended periods without electrical power, Grant recommend the use of a combined heating system antifreeze and corrosion inhibitor, used in accordance with the manufacturer’s instructions.
Grant UK for the purpose of HORIZONTAL: re-directing the flue gases to a higher level (according to the This option allows the extension of the flue system in the minimum clearances shown in Figure 9-5).
The external vertical flue (Green system) components available from Grant UK can be found in Figure 9-3 and Table 9-1. It is important to ensure that the flue system is sealed and that condensate cannot escape.
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Vertical Vertical terminal terminal 45 elbow High level 90° terminal Extended wall bracket Maximum vertical Wall bracket 45° elbows length 19 metres Locking band 950 mm High level Extensions 90° terminal 450 mm 195 to 270 mm Extensions 250 mm 150 mm 45°...
Grant Green system. See Figure 9-4. It is possible to extend the flue horizontally by a maximum of 3 A complete list of Grant Green system flue components can be metres in total flue length by using the green system. A maximum found in Figure 9-3 and Table 9-1.
FLUE CLEARANCES Page 34 Section 9: Flue System and Air Supply...
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Further guidance can be obtained from BS 5410-1:2019, OFTEC Book 4 (Installation) and Approved Document J. Grant UK flue products are fully compliant with the CE (Communauté Européenne/European Community) standards having undergone rigorous product testing. Section 9: Flue System and Air Supply...
10 COMMISSIONING To ensure safe and efficient operation, it is essential that a Grant Vortex Eco boiler is commissioned as detailed in the following procedure. To access the controls, remove the front door from the boiler casing (pull forward at the bottom and then lift off).
10.1 BEFORE SWITCHING ON Ensure the boiler is isolated from the electrical supply and the boiler On/Off switch is set to OFF. Remove the front casing door. Remove the four screws retaining the top casing panel and remove the top casing panel, then check that the high limit thermostat bulb and boiler thermostat bulb are correctly located in their respective pockets.
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! NOTE ! ! NOTE ! The distance between the end of the burner head and the Do not overtighten the fixing screw as this may damage front face of the diffuser (D) MUST be correctly set for the the electrode insulator. burner to operate correctly.
10.3 AIR ADJUSTER DISC: 10.4 SWITCHING ON 15/21 AND 21/26 MODELS ONLY Check that all system controls are calling for heat and turn the boiler thermostat to maximum. ! NOTE ! Switch on the electricity supply to the boiler. Set the boiler On/Off switch to ON. A neon on the switch lights when it is in the ON position.
10.5 RUNNING THE BOILER 10.7 COMPLETION Relight the boiler and allow it to run for at least 20 minutes. With the system hot, check again for leaks, rectifying where necessary. Drain the system while it is hot to complete the Check the smoke number, if it is 0-1 then it is satisfactory.
11 SERVICING To ensure safe and efficient operation it is essential that a Grant ! NOTE ! Vortex Eco boiler is serviced at regular intervals of no longer than 12 months. Servicing and replacement of parts must only be carried out by a The top panel has been designed to provide a slight fall suitably qualified engineer.
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Figure 11-1: Baffles (15/21 & 21/26 models) Figure 11-2: Baffles (26/35 models) Position in vertical plane IMPORTANT: The ends of the turbulators must be vertical Figure 11-3: Turbulators Page 42 Section 11: Servicing...
11.4 CLEANING THE BURNER: Photocell The photocell is a push-fit in the front of burner body. Refer to RDB2.2 BX BURNERS Sections 11.8. With the burner removed from the boiler: Holding the body of the photocell and NOT the cable, carefully pull the photocell out of the burner.
11.5 ADJUSTING THE DIFFUSER 11.6 AIR ADJUSTER DISC: 15/21 AND 21/26 MODELS ONLY Adjust the diffuser position. Refer to Figure 10-5. Refer to Section 10.3. ! NOTE ! 11.7 RECOMMISSIONING The distance between the end of the burner head and the front face of the diffuser (D) MUST be correctly set for the ! WARNING ! burner to operate correctly.
11.8 BURNER COMPONENTS RDB2.2 BX BURNERS Item Description Item Description Oil pump Air inlet Air damper adjustment screw Motor Reset button with lockout lamp Motor ignition capacitor Photocell Fuel suction line Control box Return line Pump pressure adjustment screw Combustion head adjustment handle Extension for gauge connection Coil Combustion head...
12 FAULT FINDING 12.1 BOILER FAULT FINDING Always isolate the electricity supply to the boiler before working on the boiler. Table 12-1: Boiler fault finding Fault Remedies Boiler will not start: Ensure that an adequate supply of fuel is available and that the fuel supply valve is open.
13 SPARE PARTS 13.1 BOILER PARTS LIST Table 13-1: Boiler parts list Description Grant UK product code Cleaning door nut and washer set EFBS14 Double pole switch EFBS19 Baffle set (complete) - 15/21 & 21/26 VBS96 Baffle set (complete) - 26/35...
13.3 RIELLO RDB 2.2 BX BURNERS This section gives exploded views of the Riello burners in the Grant Vortex boilers, and parts lists associated with them. Section 13: Spare Parts Page 49...
Model Name/Number: Grant Vortex Eco External 15-21, 21-26 and 26-35 Grant Vortex Eco External System 15-21, 21-26 and 26-35 Note: All Grant system variants are supplied with glandless high efficiency integrated circulators In accordance with the following Directives: 2006/95/EEC Conforms with the safety objectives of the Low Voltage Directive and its amending directives.
15 HEALTH AND SAFETY INFORMATION 15.3 KEROSENE AND GAS OIL Under the Consumer Protection Act 1987 and Section 6 of the Health & Safety at Work Act 1974, we are required to provide FUELS (MINERAL OILS) information on substances hazardous to health (COSHH Regulations 1988).
16 END OF LIFE INFORMATION GENERAL Grant oil boilers incorporate components manufactured from a variety of different materials. The majority of these materials can be recycled whilst the smaller remainder cannot. Materials that cannot be recycled must be disposed of according to local regulations using appropriate waste collection and/or disposal services.
17 PRODUCT FICHE Product fiche concerning the COMMISSION DELEGATED REGULATIONS (EU) No 811/2013 of 18 February 2013 (EU) No 813/2013 of 2 August 2013 Vortex Eco External Symbols Unit Condensing boiler Low temperature boiler B1 boiler Combination heater Rated heat output Prated Useful heat output At rated heat output and high temperature...
18 GUARANTEE You are now the proud owner of a Grant Vortex condensing boiler Free of charge repairs from Grant Engineering (UK) Limited which has been designed to During the two year guarantee period no charge for parts or give years of reliable, trouble free operation.
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• The balance of the guarantee is transferable providing the installation is serviced prior to the dwelling’s new owners taking up residence. Grant Engineering (UK) Limited must be informed of the new owner’s details. • The Company will endeavour to provide prompt service in the unlikely event of a problem occurring, but cannot be held responsible for any consequences of delay however caused.
Constant Speed Mode (I, II, III) This is the default setting of the pump and as such is recommended by Grant for heating systems. In this mode the pump speed is not automatically regulated (as with the Variable Pressure Mode), but operates constantly at one of the three possible speeds (set using the red selector knob on the pump control panel).
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A1.2 CIRCULATING PUMP FAULT DIAGNOSIS - WILO YONOS PARA RS RKC The indicator LED, located around the circumference of the red control knob can assist in diagnosing and rectifying a fault with the pump. See the table below: Table A1-2: Pump fault diagnosis LED condition Meaning Diagnostic...
APPENDIX A2 WILO-PARA 25-130/7-50/SC-6#GRA CIRCULATING PUMP A2.1 WILO-PARA 25-130/7-50/SC- A2.1.2 THERMAL PROTECTION FUNCTION 6#GRA CIRCULATING PUMP The pump is equipped with a thermal self-protection mode. If the fluid temperature exceeds the maximum value at a specific A2.1.1 PUMP SPECIFICATION ambient temperature, e.g. 90°C at an ambient of 62°C, the pump will automatically reduce the power consumption, reducing the Table A2-1: Pump specification speed and performance of the pump.
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This is the default setting of the pump and as such is set: recommended by Grant for heating systems. In this mode the pump speed is not automatically regulated (as Table A2-2: Setting pump control mode...
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Lock Operating Button • To activate the key lock function press and hold the green operating button for 8 seconds until the LEDs for the selected pump settings briefly flash, then release. • LEDs flash constantly at 1 second intervals to show that key lock is activated.
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