1. Manuals
  2. Brands
  3. Grant Manuals
  4. Boiler
  5. External Vecta
  6. Installation and servicing instructions

Grant External Vecta Installation And Servicing Instructions

4-16kw condensing wood pellet boiler and side pellet store
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Grant External Vecta
4-16kW Condensing Wood Pellet Boiler and Side
Pellet Store
Installation and Servicing Instructions
UK | DOC 0104 | Rev 1.1 | March 2017

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the External Vecta and is the answer not in the manual?

Questions and answers

Related Manuals for Grant External Vecta

Summary of Contents for Grant External Vecta

  • Page 1 Grant External Vecta 4-16kW Condensing Wood Pellet Boiler and Side Pellet Store Installation and Servicing Instructions UK | DOC 0104 | Rev 1.1 | March 2017...
  • Page 2 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

    Smoke Control areas 8 Electrical 16 Declaration of Conformity General Requirements Boiler Electrical Connections 17 Health and Safety information Remote Grant Logo Indicator Connections Connecting the Power Supply 18 Disposal and Recycling Heating System Controls Frost Protection 19 Guarantee S-plan...

  • Page 4: Introduction

    1 introduction Figure 1-1: Front/left side view of boiler Figure 1-2: Front/left side view of boiler - side access panel removed Figure 1-3: Front/left side view of boiler - top hooper lid open Figure 1-4: Front/left side view of boiler - hinged door open Page 4 Section 1: introduction...

  • Page 5: How The Condensing Wood Pellet Boiler Operates

    1.4 Flue System the latent heat to be condensed out of the flue gases. The boiler is The Grant External Vecta wood pellet boiler must be connected to a capable of a ma ximum flow temperature of 80°C. conventional flue system.

  • Page 6: Boiler Components

    1.5.1 Burner 11.3 for the location of the bulb and sensor. The Grant External Vecta boiler uses a drop feed type burner with This overheat thermostat allows the boilers to be used on a sealed modulated heat output. The burner output is determined by varying...

  • Page 7: Logo Indicator

    External Vecta boiler. This side automatic cleaning system for the burner brazier and both heat pellet store is the same external design as the External Vecta boiler exchangers. and is designed to be located at the right hand side of the boiler only.

  • Page 8: Technical Data

    2 technical Data 2.1 technical Specifications Units 4-16 16.2 Ma ximum heat output Btu/h 55,300 Minimum heat output Btu/h 15,300 Flow connection Return connection Mains water connection Water content litres Minimum flow rate litres/hour Waterside resistance ∆T=10°C mbar Waterside resistance ∆T=20°C mbar Ma ximum mains inlet water pressure 800 (8 bar)

  • Page 9: Burner Settings

    Set ting the fuel to any thing other than wood pellets will give an incorrect reading. to ensure correct combustion, the burner set tings given in the table (in Section 2.2) must nOt be changed unless instructed to do so by Grant UK. LEFT SIDE VIEW LEFT SIDE...
  • Page 10 LEFT SIDE FRONT VIEW VIEW LEFT SIDE FRONT REAR RIGHT SIDE LEFT SIDE FRONT VIEW Figure 2-3: Boiler dimensions - front view VIEW Figure 2-4: Boiler dimensions - rear view VIEW VIEW VIEW VIEW VECTA 4_16kW REV DISCRIPTION: DATE: 22/12/16 JOB TITLE: DRAWING TITLE: VECTA OUTDOOR UNIT DIMENSIONS...

  • Page 11: Pellet Specification

    3.1 Pellet Specification Grant Vecta boilers are designed to ONLY run on EN Plus Grade A1 wood pellets that comply with BS EN ISO 17225-2:2014 and meet the following criteria. Failure to use approved pellets will invalidate the product guarantee.

  • Page 12: Installation Information

    Health & Safety information given in Section 17. higher than the flue outlet. Refer to Section 7.7. If this distance cannot be achieved, then the External Vecta boiler will To achieve the ma ximum efficiency possible from the Grant Vecta...

  • Page 13: Pipework Materials

    4.4 Pipework Materials the boiler. Refer to Figure 4-1. Both connections are supplied fitted The Grant Vecta boiler is compatible with both copper and plastic with 22mm Tectite elbow connectors. pipe. Where plastic pipe is used it must be of the oxygen barrier type and be the correct class (to BS 7291-1:2010) for the application Two 150mm diameter pre-cut ‘knock-out’...

  • Page 14: Wash System

    Leave the white copy with the user, retain the pink copy for your own to maintain an adequate supply for cleaning purposes. the records, and return the yellow copy to Grant to register the installation maximum inlet water pressure is 800 kPa (8 bar).
  • Page 15 Figure 4-4: Water connection to wash system (via flexible hose from solenoid valve) Section 4: installation information Page 15...

  • Page 16: Condensate Disposal

    Refer to Section 9 for further details on boiler control set tings. Every Grant Vecta boiler is supplied with a trap and this MUSt be used. Refer to Section 5.5 for trap details.

  • Page 17: Condensate Trap

    5.5 Condensate trap The boiler is supplied with a factory-fitted condensate trap. This trap is located inside the boiler casing and is accessed by removing the side access panel on the left hand side of the boiler. nOtE Only this trap must be used with the Vecta boiler. no alternative trap should be used as it will not give the required depth of water seal.

  • Page 18: Sealed Systems

    10. Automatic bypass 11. Drain point Figure 6-1: Sealed heating system components All Grant Vecta boilers are suitable for use with sealed systems 6.1.2 Pressure Gauge complying with the requirements of BS EN 12828:2003, BS EN The pressure gauge must have an operating range of 0 to 4 bar.

  • Page 19: Filling The Sealed System

    up to 3 bar. Radiator valves must comply with the requirements of BS 11. Close the fill point and double check valves either side of the 2767:1991. filling loop and disconnect the loop. 12. Check the system for water soundness, rectifying where One or more drain taps (to BS 2879) must be used to allow the necessary.

  • Page 20: Flue System And Air Supply

    7.1 air Supply 7.2 Flue terminal Position and Clearances The Grant External Vecta wood pellet boiler draws air for combustion The Grant External Vecta wood pellet boilers have high operating from the surrounding atmosphere. The combustion air inlet to the efficiencies and low flue gas temperatures.

  • Page 21: Flue System Specification

    60 (Distance to combustibles) - 60mm minimum clearance is required from combustibles Masonry chimneys MUST be lined using the 125mm stainless steel flexible ‘ s moothbore’ liner – available as part of the Grant ‘Biomass’ flue system. Refer to Section 7.4.9.

  • Page 22: Flue System Assembly

    7.4 Flue System assembly 7.4.1 Boiler Flue Connection The Grant External Vecta boiler is supplied with a flue outlet located on the top of the boiler in the rear left corner and is designed to fit the Grant ‘Biomass’ flue system. Refer to Figure 7-3.

  • Page 23: Flue Testing

    00mm to Grant ‘Biomass’ flue system. This must be fitted directly to the boiler 230mm (this does not apply to the 200mm extension). This adjustable flue connector with the inspection hatch facing to the LEFT.

  • Page 24: Typical Flue Systems

    7.7 typical Flue Systems Rain cap Minimum Cantilever 45° bend Inspection pipe facing left (when viewed from front of Adjustable extension boiler) for ease of access. Page 24 Section 7: Flue System and air Supply...
  • Page 25 Rain cap Minimum Additional access before second offset Adjustable extension Wall bracket Extension Wall support side plate Inspection pipe facing left (when viewed from front of Adjustable extension boiler) for ease of access. Section 7: Flue System and air Supply Page 25...
  • Page 26 2300 Minimum 1400 Minimum Page 26 Section 7: Flue System and air Supply...

  • Page 27: Flue System Component Dimensions

    Ø125 Ø125 7.8 Flue System Component Dimensions Ø180 Ø180 200mm 333mm Adjustable 75 - 250mm 500mm 1000mm Straight pipe lengths (mm) Product code nominal length Ef fective length WPB/EXT200 WPB/EXT333 WPB/EXT500 WPB/EXT1000 1000 adjustable pipe length (mm) Product code nominal length Ef fective length WPB/ADJ250 75- 250 mm...

  • Page 28: Flue System Components

    Double 30° bend and straight pipe length (mm) Ef fective Dimension Length length A / B 1061 / 542 A / B 628 / 292 A / B 483 / 208 A / B 368 / 142 Double 45° bend and straight pipe length (mm) Ef fective Dimension Length...
  • Page 29 WPB/WS - Wall support side plate WPB/TP - Intermediate top plate WPB/RC - Rain cap WPB/LBEXT - Structural locking band Section 7: Flue System and air Supply Page 29...

  • Page 30: Electrical

    8 Electrical 8.1 General Requirements The Grant External Vecta wood pellet boiler requires a ~230V 1ph 50 Hz electrical supply. The unit must be connected to a mains power supply that is protected by a 5A fuse. WaRninG as a stationary appliance not fit ted with a means for...

  • Page 31: Remote Grant Logo Indicator Connections

    8.6 Frost Protection Likewise, ensure that the terminals with the black wire on both the The Grant External Vecta wood pellet boiler is supplied with a factory- boiler and logo indicator terminal blocks are connected together. fitted frost protection thermostat. This is pre-set to operate when the air temperature falls to 2°C.

  • Page 32: S-Plan

    Brown Link Link Link* L 1 2 3 4 OFF OFF ON ON HW HT HW HT Frost Stat Grant 2-Channel Pipe Stat (factory * if a pipe stat is Wall Mounted (if fitted) fitted) fit ted, please remove Programmer ESKIT...

  • Page 33: Boiler Wiring Diagram

    8.9 Boiler Wiring Diagram Figure 8-10: Boiler wiring diagram Section 8: Electrical Page 33...

  • Page 34: Boiler Operation

    9 Boiler Operation 9.1 General 9.2 Modulation The control system automatically regulates all aspects of the boiler Adjustable boiler control parameter numbers are shown in square operation including: brackets. Refer to Parameter Menu in Section 9.7. • Burner start up and shut sequences The boiler has a ‘...

  • Page 35: Automatic Cleaning

    The boiler water temperature is continually monitored during boiler 9.3 automatic Cleaning operation. If it exceeds ‘Hysteresis On’ temperature plus ‘Set Point’ Adjustable boiler control parameter numbers are shown in square temperature (i.e. boiler temperature > ‘Set Point’ + ‘Hysteresis On’), brackets.

  • Page 36: Boiler Control Panel

    9.4 Boiler Control Panel • Parameter Menu – to check/adjust the boiler control parameters (Refer to Section 9.7) – this is accessed from the Service Menu. STANDBY T: 69.5°C SP: 75.0°C nOtE Heating Demand access to the Service Menu (and thus the Parameter Menu) is password protected.

  • Page 37: Boiler Setpoint Temperature

    9.5 Boiler Setpoint temperature 9.6 Service Menu (including Parameter Menu) To adjust the boiler ‘Setpoint’ temperature (when in ‘Home Screen’) To access ‘Service menu’: • Press button 4 • Press and hold button 1 (until four zeros are displayed) • Enter the 4-digit access code –...

  • Page 38: Parameter Menu

    (excluding setpoint) MUSt be lef t at the default The time between pellet feed auger operations when the burner is set tings unless instructed to do so by Grant UK. operating at minimum output. Adjusting this parameter adjusts the boiler input at minimum output, i.e.
  • Page 39 6 Pause Min Power Password Service Menu 3 temp Of f H20 Press and hold 2 Hysteresis Of f Setpoint Screen Home screen 1 Hysteresis On 0 Setpoint information Fan Power Select 54 Short Clean Cycles Flame Lux: % Fan Speed: RPM 18 Fan Power Post Purge Brazier Clean 17 Fan Power Lighting...

  • Page 40: Boiler Operating Sequence

    Modulation Level 9.8 Boiler Operating Sequence The boiler is now firing. The following stages of the boiler operation are displayed on the • Activated after pre-set ‘Feed Time Reduced’ period of 220 control panel LCD screen. seconds has elapsed. nOtE •...

  • Page 41: Boiler Operation Flow Chart

    9.9 Boiler Operation Flow Chart Mains Power to Boiler On Boiler Clean Standby Temp < (Set point – Temp Delta) & Switched Live Input on Wait Pre Load Brazier Fan Proving Check Fan Proving Check OK Wait Pre Load Brazier Switched Live Input Off Time >...

  • Page 42: Side Pellet Store

    Grant logo indicator will be automatically cancelled. this side pellet store can only be fit ted on the right hand side of the Grant Ex ternal Vecta boiler. it CannOt be fit ted on the nOtE lef t hand side of the boiler under any circumstances.

  • Page 43: Installation

    10.3 installation 10.3.1 Boiler installation Install the boiler in the required location allowing sufficient room for the installation of the side pellet store. Refer to Section 2.4 for details of dimensions and clearances required for the boiler and side pellet store.
  • Page 44 Whilst firmly holding the end of the auger spiral in position, cut 10.3.3 Side Pellet Store installation Install the side pellet store using the following procedure: and remove the packaging securing it to the side pellet store. Undo and remove the three screws along the top edge of the left hand side panel of the side pellet store.
  • Page 45 store and into the boiler casing. Leave finger tight at this stage. Refer to Figure 10-9. Figure 10-11: Fitting the top joining channel screws 16. Re-fit the centre section of the grille inside the side pellet store Figure 10-9: Refitting the two hex head screws and secure with the single fixing screw previously removed.

  • Page 46: Electrical Connections

    10.4.2 Pellet side store lid cut-out switch 10.4 Electrical Connections Locate the in-line male and female connectors next to the boiler 10.4.1 Pellet side store contents switch lid cut-out switch (under the upper front edge of the boiler front Feed the white cable from the side pellet store contents switch panel in the centre) and carefully separate the two connectors.

  • Page 47: Commissioning The Side Store

    Refer to Section 9.3 for details. The boiler control panel LCD will flash with the message ‘Low Fuel Warning’, and the remote Grant Logo Indicator will also flash slowly, indicating a low pellet level and that the boiler hopper needs to be topped-up.

  • Page 48: Commissioning

    Check the following: grille off the three tabs in the slots along at the rear edge, and • The correct flue system has been used. Only the Grant ‘Biomass’ remove it from the boiler. flue system should be used. •...
  • Page 49 Check the following: • The ash pan is empty and correctly located on the base of the combustion chamber • The horizontal and vertical baffles are correctly fitted in the rear of the combustion chamber. • The burner flame pot is correctly located in the top of the burner. •...
  • Page 50 Check that the pellet hopper is full of pellets. Fill the hopper with pellets by hand from bags. Ensure that only EN Plus Grade A1 pellets, that comply with BS EN ISO 17225-2:2014, are used with the Grant Vecta boiler. Refer to Section 3 for details. Page 50 Section 11: Commissioning...

  • Page 51: Hopper Lid Cut-Out Switch

    11.4 Hopper Lid Cut-out Switch 11.7 Lighting the Boiler With the power supply to the boiler switched OFF: nOtE • Set the ON/STANDBY switch on the boiler to STANDBY and switch the power to the boiler ON. • Open the hinged hopper lid and wait. BEFORE at tempting to light the boiler, open the combustion •...

  • Page 52: Combustion Chamber Draught

    Section 11.8, the %CO2 in the flue gases must be A copy of the completed form must be left with the customer/user, checked as follows: one must be returned to Grant UK and the remaining third copy retained by the Installer. Refer to Section 4.8. •...

  • Page 53: Commissioning Check List

    11.12 Commissioning Check List The following checklist must be used in conjunction with the preceding information given in this section: Preliminary inspection tick box notes Heating system  Electrical connections  Condensate disposal  Flue system  Combustion ventilation  Boiler Control panel ...

  • Page 54: Servicing

    12 Servicing 12.1 General 12.2 Checks before Servicing It is essential that Grant Vecta boilers are serviced at regular intervals of no longer than 12 months OR when ‘Service’ is shown on the WaRninG burner control panel display – whichever comes FIRST.

  • Page 55: Flue System

    12.4 Flue System 12.4.1 Flue terminal WaRninG Failure to maintain a clean flue can result in the emission of flue gases into the dwelling or damage from potential fire in the flue. Check the flue terminal and ensure that it is not blocked or damaged. 12.4.2 Flue To access the flue inspection hatch, remove the circular outer cover.
  • Page 56 vacuum. 12.6.4 Fan • Clean all ash deposits from top chamber of the primary heat exchanger (above tubes) and shaker mechanism/plates, using brush and vacuum. • Clean and check condition of all spiral baffles. • Re-fit baffles into heat exchanger tubes, fitting them through shaker plates.
  • Page 57 12.6.5 Combustion Chamber WaRninG Ensure the electrical supply to the boiler is isolated at the fused spur before proceeding. Shut off the isolator. • Fit the multi-purpose tool (provided with the boiler) into slot in door catch. Refer to Figure 11-5. •...

  • Page 58: Burner

    • Remove the flame pot from the top of the burner. Refer to Figure 12.7 Burner 12-15. 12.7.1 Dismantling the Burner WaRninG Ensure the electrical supply to the boiler is isolated at the fused spur before proceeding. To clean the burner thoroughly it is necessary to dismantle it using the following procedure: •...

  • Page 59: Ignition Element

    nOtE the flange on one side of the octagonal pot is narrower than the other seven sides. Refer to Figure 12-19. this side MUSt be located on the lef t hand side or the pot will not fit into the burner housing.

  • Page 60: Condensate Disposal System

    Clean the inside of the element mounting tube using a suitable size of 12.10 Boiler Set tings tube brush. With the electrical power to the hopper and boiler switched on, and Check and clean both ignition element and ceramic socket and the boiler ON/STANDBY switch set to STANDBY, check that ALL boiler ensure the ignition element if correctly fitted into the ceramic socket.

  • Page 61: Fault Finding

    13 Fault Finding 13.1 Fault Codes The boiler control system monitors all aspects of the boiler operation and, should a fault occur, will display a fault message and fault code on the control panel LCD. The fault messages and codes are as follows: Fault message Error code Safety Relay Fault...

  • Page 62: Fault Details

    13.2 Fault Details 13.2.1 Failed Pellet Lighting Page 62 Section 13: Fault Finding...
  • Page 63 13.2.2 Overheat thermostat Section 13: Fault Finding Page 63...

  • Page 64: Spare Parts

    Nozzle tube (for wash down) VEC010 Nozzle holder (for wash down) VEC011 Wash down flexible hose Special - please call Grant UK Primary heat exchanger spirals VEC012 Secondary heat exchanger spirals (LHS - 4½ turns) VEC013 Secondary heat exchanger spirals (RHS - 2½ turns)
  • Page 65 14.2 Side Store Parts List item Description Grant UK product code Quantity Auger motor (SPG) Special - please call Grant UK Low fuel warning microswitch Special - please call Grant UK Low fuel diaphragm Special - please call Grant UK Section 14: Spare Parts...

  • Page 66: The Clean Air Act 1993 And

    1993 including designation and supervision of smoke control areas and you can contact them for details of Clean Air Act requirements. The Grant Vecta 4-16 Condensing Wood Pellet Boiler has been recommended as suitable for use in smoke control areas when burning EN Plus A1 pellets.

  • Page 67: Declaration Of Conformity

    Declare that: Equipment: Floor Standing Domestic Condensing Wood Pellet Boiler Model name/number: Grant Vecta 4-16 Wood Pellet Boiler in accordance with the following Directives: 2006/95/EC 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 68: Health And Safety Information

    17 Health and Safety information Under the Consumer Protection Act 1987 and Section 6 of the Health 17.2 Sealant and adhesive and safety at Work Act 1974, we are required to provide information Material types: on substances hazardous to health (COSHH Regulations 1988). Silicone elastomer.

  • Page 69: Disposal And Recycling

    18 Disposal and Recycling General Grant wood pellet 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 servic- Disassembly There is little risk to those involved in the disassembly of this product.

  • Page 70: Guarantee

    19 Guarantee You are now the proud owner of a wood pellet boiler from Grant Remember - before you contact Grant Engineering (UK) Engineering (UK) Limited, which has been designed to give years of Limited: reliable, trouble free, operation. •...
  • Page 71 Company. • Use of spare parts not authorised by Grant Engineering (UK) • Proof of purchase and date of installation, commissioning and Limited.
  • Page 72 Grant EnGinEErinG (UK) LimitEd Hopton House, Hopton Industrial Estate, Devizes, Wiltshire, SN10 2EU Tel: +44 (0)1380 736920 Fax: +44 (0)1380 736991 Email: info@grantuk.com www.grantuk.com...

Table of Contents