Grant Vortex VTXBH15/26 Installation & Servicing Instructions Manual
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Grant Vortex VTXBH15/26 Installation & Servicing Instructions Manual

Boiler house condensing oil boiler range
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Grant Vortex
Boiler House
Condensing Oil Boiler Range
Installation and Servicing Instructions
UK | DOC 0128 | Rev 2.0 | July 2022

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Summary of Contents for Grant Vortex VTXBH15/26

  • Page 1 Grant Vortex Boiler House Condensing Oil Boiler Range Installation and Servicing Instructions UK | DOC 0128 | Rev 2.0 | July 2022...
  • Page 2 This manual is accurate at the date of printing but will be superseded and should be disregarded if specifications and/or appearances are changed in the interests of continued product improve- ment.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.

  • Page 3: Table Of Contents

    CONTENTS INTRODUCTION FLUE SYSTEM AND AIR SUPPLY Air supply How a condensing boiler operates Conventional flue systems Boiler description Connecting a conventional flue Flue options Balanced flue systems Boiler components Prepare the wall Flue clearances TECHNICAL DATA Boiler technical data COMMISSIONING Burner settings 10.1...

  • Page 4: Introduction

    Consisting of three sections: from the Grant ‘Orange’ and ‘Green’ flue systems. Refer to Figure 9-4 for details. This flue system is suitable for all Grant oil boilers • Concentric white painted flue pipe connected to the boiler up to and including the Vortex 46-70.

  • Page 5: Boiler Components

    RBS36 or 600mm in length, product code: RBS36XS) and 3/8” to 1/4” BSP male adaptor (product code: Z3003602) are available to purchase from Grant UK, for two-pipe oil supply systems. The temperature of the water leaving the boiler to heat the radiators and hot water cylinder is user adjustable.

  • Page 6: Technical Data

    TECHNICAL DATA BOILER TECHNICAL DATA Table 2-1: Boiler technical data Boiler House Units 15-26 26-46 46-70 litre Water content Weight (dry)* 26.3 46.0 70.0 Maximum heat output (Kerosene) Btu/h 89,800 157,000 238,800 Minimum flow rate (∆T=10°C) 2,200 4,000 6,000 Minimum flow rate (∆T=20°C) 1,100 2,000 3,000...

  • Page 7: Burner Settings

    When setting the 15-26 to 26kW, the air adjuster disc is not required. Refer to Section 10.4 (air adjuster disc). When setting the 26-46 to either 26kW or 31kW, the burner air adjuster disc (Grant UK product code: Z20094349) must be fitted and positioned to the correct disc setting, as shown in Table 2-2 above.

  • Page 8: Boiler Dimensions

    BOILER DIMENSIONS RETURN FLOW PLAN VIEW RETURN FLOW CONDENSATE OUTLET (15-21 & 21-26) CONDENSATE OUTLET (26-35) LEFT SIDE VIEW RIGHT SIDE VIEW Figure 2-1: 15-26 dimensions FLOW RETURN PLAN VIEW CONDENSATE DRAIN RIGHT SIDE VIEW LEFT SIDE VIEW Figure 2-2: 26-46 dimensions Page 8 Section 2: Technical Data...
  • Page 9 RETURN PLAN VIEW CONDENSATE DRAIN FLOW LEFT SIDE VIEW RIGHT SIDE VIEW Figure 2-3: 46-70 dimensions Section 2: Technical Data Page 9...

  • Page 10: Oil Storage And Supply System

    BS 5410-2. • ¼ʺ isolating valve (product code: ISOLATION1/4) Oil storage tanks should comply with the following standards: These are available to purchase from Grant UK. • Plastic tanks OFT T100 Metal braided flexible fuel hoses should be replaced ANNUALLY •...
  • Page 11 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 External wall Burner Isolating valve Oil filter (15μm max. filtration size) Non-return valve Oil strainer Fire valve sensor De-aerator* Fire valve to BS5410-1 Oil pump...

  • Page 12: Burner Oil Connection

    ¼ʺ isolating valve (product code: ISOLATION1/4) Unscrew and remove the THREE fixing screws from the These are available to purchase from Grant UK. red burner cover and remove the cover from the burner. Unscrew and remove the single burner fixing nut from the stud on the burner flange (at the top of the burner) using a 13 3.1.5...

  • Page 13: Fitting The Burner

    FITTING THE BURNER For either a two pipe (sub gravity) or a single pipe (suction) With all Grant Boiler House models, the burner and boiler are system with a deaerator, the following additional items will be supplied together but in separate cartons.

  • Page 14: Installation

    Before starting any work on the boiler or fuel supply, invalidate the boiler guarantee. please read the Health and Safety information given in Installation of a Grant Vortex boiler must be in accordance with Section 15. the following recommendations: To achieve the maximum efficiency possible from the Grant Vortex •...

  • Page 15: Pipework Materials

    4.5 PIPEWORK MATERIALS the carton containing the remaining items. The Grant Vortex boiler is compatible with both copper and plastic pipe. Where plastic pipe is used it must be of the oxygen barrier type and be the correct class (to BS 7291-1) for the application INSTALLING THE BOILER concerned.

  • Page 16: Before You Commission

    For details of the Sentinel Products visit www.sentinel-solutions. 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. This should be installed and regularly serviced in accordance with the filter manufacturer’s instructions.

  • Page 17: Pipe Connections

    Figure 5-1: 15-26 models - dual stat/mounting bracket, flow and If a Grant low level balanced flue (Yellow System) or external return connections and removable cover plate balanced flue system (Green System) is used, the flow pipe must be positioned as follows: •...

  • Page 18: Models

    15-26 MODELS A 28mm push-fit straight connector is provided for making the connection to the open end of the bent flow pipe. To fit the dual thermostat capillary phials into their pockets on the The flow pipe from the boiler will need to be vented as it is the boiler: highest point on the primary heat exchanger.

  • Page 19: Condensate Disposal

    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).

  • Page 20: Condensate Soakaway

    When connecting plastic discharge pipe, ensure that the gulley or soil stack, is not covered by the Grant product pipe is fully pushed into the outlet end on the flexible hose guarantee.

  • Page 21: Sealed Systems

    SEALED SYSTEMS SEALED SYSTEM REQUIREMENTS All Grant Vortex Boiler House models are suitable for use with sealed systems complying with the requirements of BS EN 12828, Table 7-1: Key to sealed system diagram BS EN 12831 and BS EN 14336.

  • Page 22: Filling The Sealed System

    ! NOTE ! ! NOTE ! Ensure that the expansion vessel used is of sufficient size The air charge pressure may be checked using a tyre for the system volume. pressure gauge on the expansion vessel Schraeder valve. Refer to BS 7074-1 or The Domestic Heating Design Guide The vessel may be re-pressurised, when necessary, using for sizing the required vessel.

  • Page 23: Electrical

    GENERAL thermostat pockets on the flow pipe. Refer to Figure 5-6. Grant Vortex Boiler House models require a ~230V 1ph 50Hz Fit the dual thermostat and bracket (15-26 and 26-46 models supply. It must be protected by a 5 Amp fuse.

  • Page 24: Frost Protection

    For total system protection against freezing, particularly dual thermostat cover is properly secured. during extended periods without electrical power, Grant 10. Re-connect the electrical supply and check operation of recommend the use of a combined heating system...
  • Page 25 230V Orange 50HZ Grey White L N E Cylinder Stat Motor Room Blue Green/Yellow Stat 270k 0.25W 3-Port Mid Position Green/Yellow Zone Valve Blue Brown Pump Wiring Green/Yellow Centre Blue Brown Link Link Earth Stud on top of Boiler Green/Yellow Green/Yellow Blue Blue...

  • Page 26: Flue System And Air Supply

    Figure 9-1: Air supply for room sealed balanced flue boilers boilers. The top and bottom of the annular space must be sealed. Grant recommends the use of the Grant ‘Orange’ flue system, specifically designed for the Vortex range of condensing boilers.
  • Page 27 GFKIT 6/100 100 mm diameter x 6 metre For a rigid conventional flue system Grant recommends the use of the Grant ‘Hybrid’ flue system, which uses the Grant Green GFKIT 6/125 125 mm diameter x 6 metre and Orange flue system components for this application. Refer to...
  • Page 28 Boiler flue connector (from CFA 15/70 kit) Boiler Boiler Figure 9-4: Hybrid flue system using Grant Orange and Green Figure 9-3: Grant Orange flue system in a typical brick chimney systems components Page 28 Section 9: Flue System and Air Supply...

  • Page 29: Connecting A Conventional Flue

    CONNECTING A CONVENTIONAL FLUE LOW LEVEL HORIZONTAL BALANCED FLUE (YELLOW SYSTEM) If the Grant ‘Orange’ flue system is being used – follow the instructions supplied with the flue kit. Available in Short (for single thickness brick walls) and Standard kits.
  • Page 30 The maximum flue length for this system - from the top of the together, i.e. any joint that does not slide. boiler flue outlet to the terminal - is 12 metres for all Grant Vortex • Type 2. A white painted band - to cover the sliding joint on boilers.
  • Page 31 Support clamp Terminal upstand The Grant Red system flexible stainless steel liner is directional. Top plate The arrows marked on the inner liner MUST be pointing vertically upwards, following the direction of the flue gases. Failure to comply with this instruction could lead to a leakage of condensate from the flue liner.
  • Page 32 Vertical terminal kit GTV90 (15 - 26 kW) GTV200 (26 - 70 kW) 45 elbow kit GE45/90 (15 - 26 kW) GE45/200 (26 - 70 kW) High level terminal kit GTH90 (15 - 26 kW) GTH200 (26 - 70 kW) Typical Extended wall bracket ue system...

  • Page 33: Prepare The Wall

    PREPARE THE WALL 9.5.2 HIGH LEVEL AND VERTICAL BALANCED FLUE 9.5.1 LOW LEVEL BALANCED FLUE If the boiler is to be used with the high level balanced flue (White If the boiler is to be used with a low level balanced flue (Yellow system) make the hole in the wall as shown in Figure 9-12.

  • Page 34: Flue Clearances

    FLUE CLEARANCES Page 34 Section 9: Flue System and Air Supply...
  • Page 35 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...

  • Page 36: Commissioning

    10 COMMISSIONING To ensure safe and efficient operation, it is essential that a Grant Vortex boiler is commissioned as detailed in the following section. 10.1 BEFORE SWITCHING ON Ensure the boiler is isolated from the electrical supply that all system controls are set to OFF.

  • Page 37: Burner Settings

    10.2 BURNER SETTINGS: • Tighten the fixing screw (3) to secure the diffuser/ electrode assembly in place on the nozzle holder. RDB2.2 BX BURNERS FOR 15-26 AND 26-46 MODELS ! NOTE ! With the burner removed from the boiler: Unscrew and remove the two screws holding the air intake spigot to the top of the air inlet cover.

  • Page 38: Burner Settings: Rdb3.2 Burners

    10.3 BURNER SETTINGS: ! NOTE ! RDB3.2 BURNERS FOR 46-70 MODELS The distance between the end of the burner head and the With the burner removed from the boiler: front face of the diffuser (D) MUST be correctly set for the burner to operate correctly.

  • Page 39: Air Adjuster Disc

    If the 26-46 model is to be downrated to either 26 or 31kW, an air adjuster disc (Grant UK product code Z20094349) must be fitted as described below. This disc is NOT supplied with the 26-46 model, but is available free-of-charge by contacting Grant UK.

  • Page 40: Switching On

    10.6 RUNNING THE BOILER The air adjuster disc is re-positioned as follows: • Remove the screw from the centre of the air adjuster Relight the boiler and allow it to run for at least 20 minutes. disc. Check the smoke number, if it is 0-1 then it is satisfactory. •...

  • Page 41: Completion

    10.8 COMPLETION 10.9 INFORMATION FOR THE USER The User must be advised (and demonstrated if necessary) of the With the system hot, check again for leaks, rectifying where following important points:- necessary. Drain the system while it is hot to complete the flushing process.

  • Page 42: Servicing

    11 SERVICING To ensure safe and efficient operation it is essential that a Grant Check or replace the flexible fuel supply hose, as follows: Vortex boiler is serviced at regular intervals of no longer than 12 • Braided flexible fuel supply hoses (as supplied with the months.
  • Page 43 Figure 11-3: 46-70kW baffles Figure 11-1: 15-26kW baffles Figure 11-2: 26-46kW baffles Section 11: Servicing Page 43...

  • Page 44: Cleaning The Burner

    11.4 CLEANING THE BURNER: ! NOTE ! RDB2.2 BX BURNERS ONLY FOR 15-26 AND 26-46 MODELS The distance between the end of the burner head and the With the burner removed from the boiler: front face of the diffuser (D) MUST be correctly set for the Burner head, nozzle and diffuser/electrode assembly: burner to operate correctly.

  • Page 45: Cleaning The Burner: Rdb3.2 Burners Only

    11.5 CLEANING THE BURNER: 11.6 CLEANING THE BURNER: RDB3.2 BURNERS ONLY ALL MODELS FOR 46-70 MODELS Photocell With the burner removed from the boiler: The photocell is a push-fit in the front of burner body. Refer to Section 11.9. Remove the burner head. Refer to Figure 10-8. Loosen the two fixing screws (3) and remove head (2) from burner.

  • Page 46: Burner Components

    11.9 BURNER COMPONENTS 11.9.1 BOILER HOUSE 15-26, 26-46 (RIELLO RDB 2.2 BX) 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...
  • Page 47 11.9.2 BOILER HOUSE 46-70 (RIELLO RDB 3.2) Item Description Item Description Reset button with lockout lamp Pump pressure adjustment screw Photocell Extension for gauge connection Air inlet Oil pump Combustion head Flange with insulating gasket Control box Air damper adjustment screw Section 11: Servicing Page 47...

  • Page 48: Fault Finding

    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.

  • Page 49: Burner Fault Finding - Riello Rdb Burners

    12.2 BURNER FAULT FINDING - RIELLO RDB BURNERS Section 12: Fault Finding Page 49...

  • Page 50: Spare Parts

    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) - 15-26 VBS99 Baffle set (complete) - 26-46 VBS36...

  • Page 51: Riello Rdb 2.2 Bx Burners

    13.2 RIELLO RDB 2.2 BX BURNERS (15-26 AND 26-46 MODELS) This section gives exploded views of the Riello burners in the Grant Boiler House boilers, and parts lists associated with them. Section 13: Spare Parts Page 51...
  • Page 52 Page 52 Section 13: Spare Parts...
  • Page 53 Section 13: Spare Parts Page 53...

  • Page 54: Riello Rdb 3.2 Burners (46-70 Models)

    13.3 RIELLO RDB 3.2 BURNERS (46-70 MODELS) This section gives exploded views of the Riello burners in the Grant Boiler House boilers, and parts lists associated with them. Page 54 Section 13: Spare Parts...
  • Page 55 Section 13: Spare Parts Page 55...

  • Page 56: Declaration Of Conformity

    Declare that: Equipment: Domestic oil boilers Model Name/Number: Grant Vortex Boiler House 15-26, 26-46, 46-70. In accordance with the following Directives: 2006/95/EEC Conforms with the safety objectives of the Low Voltage Directive and its amending directives. 2004/108/EC Conforms with the essential protection requirements of the Electromagnetic Compatibility Directive and its amending directives.

  • Page 57: Health And Safety Information

    15 HEALTH AND SAFETY INFORMATION 15.3 KEROSENE AND GAS OIL FUELS Under the Consumer Protection Act 1987 and Section 6 of the Health & Safety at Work Act 1974, we are required to provide (MINERAL OILS) information on substances hazardous to health (COSHH Known Hazards: Regulations 1988).

  • Page 58: End Of Life Information

    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.

  • Page 59: Product Fiche

    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 Boiler House 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 regime...

  • Page 60: Guarantee

    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.
  • Page 61 • 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.
  • Page 62 NOTES Page 62 Notes...
  • Page 63 NOTES Notes Page 63...
  • Page 64 GRANT ENGINEERING (UK) LIMITED Unit A/B, Europark, Frankland Road, Blagrove Industrial Estate, Swindon, SN5 8YU Tel: +44 (0)1380 736920 Fax: +44 (0)1380 736991 Email: info@grantuk.com www.grantuk.com...

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