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Grant External Vecta, Installation And Servicing Instructions

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Grant External Vecta Installation And Servicing Instructions Download Page 41

Section 9: Boiler Operation

Page 41

9.9  Boiler Operation Flow Chart

Time > ‘Post Ventilation’

Setting (120 seconds)

Lux % < ‘Flame 

Off’ Setting (4%)

Pellet auger run 
time > 480 mins

Mains Power 

to Boiler On

Time > ‘Pre Load Time’ setting 

(46 seconds)

Switched Live 

Input Off

Switched Live 

Input Off

Switched Live 
Input Off

Switched Live Input Off

Lux % < ‘Flame 

Off’ Setting (4%)

Time > ‘Feed Time Reduced’ 

Setting (220 seconds)

Lux % > ‘Flame On’ Setting (20%)

Time > ‘Time Flame Stabilisation’       

Setting (10 seconds)

Fan Proving Check OK 

Temp < (Set point – Temp Delta)

& Switched Live Input on 

Switched Live Input Off

Standby

Wait Pre Load Brazier

Fan Proving Check

Lighting Feed 

Reduced

Wait Pre Load Brazier

Flame Stabilisation

Lighting

Modulation Level

Turning Off Brazier 

Wait Post  Purge

Boiler Clean

Turning Off  Brazier

Boiler Clean

Wait Post Purge

Figure 9-7:

 Boiler control sequence flow chart

Summary of Contents for External Vecta

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

Page 2: ...on Grant Engineering UK Limited 2017 No part of this manual may be reproduced by any means without prior written consent Important Note for Installers This manual is intended to guide Installers who h...

Page 3: ...3 Remote Grant Logo Indicator Connections 31 8 4 Connecting the Power Supply 31 8 5 Heating System Controls 31 8 6 Frost Protection 31 8 7 S plan 32 8 8 Y plan 32 8 9 Boiler Wiring Diagram 33 9 Boile...

Page 4: ...uction 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 Figure 1 1 Front left side view of boiler Figure 1 2 Front left side vie...

Page 5: ...2 Boiler Description Grant External Vecta wood Pellet boilers have an insulated weatherproof enclosure made of galvanised steel with a powder coated finish and are designed for external installation e...

Page 6: ...oiler control thermistor sensor Refer to Section 11 3 for the location of the bulb and sensor This overheat thermostat allows the boilers to be used on a sealed central heating system and will automat...

Page 7: ...nstalled also top up this store at the same time Refer to Section 10 Logo flashing fast flash Indicates ash pan needs emptying empty ash pan without delay Refer to Section 1 7 1 7 Boiler Cleaning and...

Page 8: ...fused Maximum operating pressure sealed system bar 2 0 Maximum operating pressure open system bar 2 0 Maximum operating pressure pressure relief valve bar 2 5 Flue length minimum metres 1 4 Flue lengt...

Page 9: ...be removed To do this turn the knob in the centre of the outer cover approximately one turn anticlockwise and pull the cover away from the inspection pipe The combustion test point is located immediat...

Page 10: ...1 DWG NO REV VECTA OUTDOOR UNIT DIMENSIONS 22 12 16 22613 DATE JOB TITLE VECTA 4_16kW OUTDOOR DRAWING TITLE REV DISCRIPTION REV DATE 868 870 141 132 150 260 312 114 1216 FRONT VIEW LEFT SIDE VIEW RIG...

Page 11: ...dust or fines Too many fines indicate a poor quality pellet and can impede pellet flow in addition to causing dust problems when delivering and storing the pellets Mechanical durability This is a mea...

Page 12: ...s BS EN 12831 2003 Heating systems in buildings Method for calculation of the design heat load BS EN 14336 2004 Heating systems in buildings Installation and commissioning of water based heating syste...

Page 13: ...rear panel and base The flow and return connections are located on the left hand side of the boiler Refer to Figure 4 1 Both connections are supplied fitted with 22mm Tectite elbow connectors Two 150...

Page 14: ...ed in accordance with the guidelines given in BS 7593 1992 Treatment of water in domestic hot water central heating systems This must involve the use of a proprietary cleaner such as Sentinel X300 new...

Page 15: ...Section 4 Installation Information Page 15 Figure 4 4 Water connection to wash system via flexible hose from solenoid valve...

Page 16: ...minimum nominal diameter of 32mm 1 plastic pipe Condensate disposal pipes should be kept as short as possible and the number of bends kept to a minimum Pipes should be adequately fixed to prevent sagg...

Page 17: ...the boiler and run underground and into soil pipe or waste system If the waste system for the property concerned is connected to a septic tank an in line Condensate Neutraliser should be fitted in th...

Page 18: ...system 6 1 3 Safety Valve The safety valve provided with the boiler is set to operate at 2 5bar It should be fitted in the flow pipework near to the boiler The pipework between the safety valve and bo...

Page 19: ...4 Open the fill point valve 5 Gradually open the double check valve from the water supply until water is heard to flow 6 When the needle of the pressure gauge is between 0 5 and 1 0 bar close the valv...

Page 20: ...greater than 45 from the vertical e g two 45 elbows must NOT be used together to form a 90 elbow The flue system must NOT include any horizontal sections of flue Grant recommends that an adjustable fl...

Page 21: ...Building Regulations Approved Document J Also refer to Approved Document J of either the England and Wales Building Regulations for further requirements on the installation of flue systems for solid f...

Page 22: ...onnections Figure 7 6 Twist lock joint between components To join two components together All flue joints must have a lip seal gasket fitted This seal is supplied with the flue component To temporaril...

Page 23: ...ved without the need for guy wires by using an extended Structural locking band at the joint immediately below and at every joint above the last flue support 7 4 5 Flue Inspection Pipe product code WP...

Page 24: ...on 7 Flue System and Air Supply Page 24 7 7 Typical Flue Systems 600 Minimum Inspection pipe facing left when viewed from front of boiler for ease of access Rain cap Cantilever Adjustable extension 45...

Page 25: ...second offset Inspection pipe facing left when viewed from front of boiler for ease of access Section 7 Flue System and Air Supply Page 25 Adjustable extension Extension Rain cap Adjustable extension...

Page 26: ...Section 7 Flue System and Air Supply Page 26 2300 Minimum 1400 Minimum...

Page 27: ...ngth WPB ADJ250 75 250 mm 50 230mm Complete with locking band Telescopes over pipe below Minimum engagement should be half the diameter This component is NOT load bearing Straight and adjustable pipe...

Page 28: ...61 542 460 A B 628 292 293 A B 483 208 160 A B 368 142 Double 45 bend and straight pipe length mm Effective length Dimension Length 960 A B 933 784 460 A B 580 431 293 A B 462 313 160 A B 367 218 7 9...

Page 29: ...Section 7 Flue System and Air Supply Page 29 WPB WS Wall support side plate WPB LBEXT Structural locking band WPB RC Rain cap WPB TP Intermediate top plate...

Page 30: ...and 8 6 Do NOT interrupt the permanent supply to the hopper boiler with any external controls 8 2 Boiler Electrical Connections All the electrical connections permanent mains supply and switched live...

Page 31: ...k from left to right as per Figure 8 7 2 3 SWITCHED LIVE PERMANENT LIVE NEUTRAL EARTH SIDE STORE NEUTRAL SIDE STORE EARTH SIDE STORE LIVE 1 Figure 8 7 Boiler terminal block If the 4 core flex between...

Page 32: ...e Stat if fitted 2 3 SWITCHED LIVE PERMANENT LIVE NEUTRAL EARTH SIDE STORE NEUTRAL SIDE STORE EARTH SIDE STORE LIVE 1 Link Frost Stat factory fitted Link Link If a pipe stat is fitted please remove th...

Page 33: ...tion 8 Electrical Page 33 8 9 Boiler Wiring Diagram Figure 8 10 Boiler wiring diagram NOTE Earth and some Neutral connections have been excluded for clarity All switches are shown in the closed positi...

Page 34: ...iler Operation 9 2 Modulation Adjustable boiler control parameter numbers are shown in square brackets Refer to Parameter Menu in Section 9 7 The boiler has a setpoint temperature This is the target f...

Page 35: ...automatically reduced if the output increases the air supply and fan speed will be automatically increased This control of the air supply is achieved using the Lambda sensor located at the top of the...

Page 36: ...rameter Menu mode to increase parameter value 9 4 2 Boiler Control LCD screen The control LCD screen can show six different display types Home Screen Indicating the current stage in boiler operating s...

Page 37: ...brazier and boiler both primary and condensing heat exchangers cleaning function Press button 4 Confirm to start boiler cleaning function Press button 3 Cancel to exit this function if manual operati...

Page 38: ...and wash systems are NOT operated during this short cleaning operation 9 7 7 Fan Power Post Purge This parameter sets the fan speed when the burner is in the post purge mode 9 7 8 Fan Power Lighting...

Page 39: ...rameter Press button 4 to confirm setting then press button 3 to return to Service Menu NOTE Oxygen level Target Level Actual Level Service information Run Time Hrs Service in Hrs V 1 V 3 V 3 V 3 V 3...

Page 40: ...auger on time is given by the pre set Time Load Lighting setting of 1 second The combustion fan is operating at Fan Power Max speed setting 15 Activated after pre set Flame Stabilisation stage period...

Page 41: ...Off Lux Flame Off Setting 4 Time Feed Time Reduced Setting 220 seconds Lux Flame On Setting 20 Time Time Flame Stabilisation Setting 10 seconds Fan Proving Check OK Temp Set point Temp Delta Switched...

Page 42: ...logo indicator located inside the house will also flash slowly to indicate that the pellet level in the boiler hopper has fallen to the pre set minimum Pellets will be transferred from the side pelle...

Page 43: ...2 Figure 10 2 Removing the pellet hopper grille 6 Ensure that the boiler pellet hopper is empty of pellets If not remove all pellets before proceeding any further 7 Remove the pre cut knock out in the...

Page 44: ...can be fitted Refer to Figure 10 8 for location of auger pipe clamp bolt Figure 10 8 Location of auger pipe clamp bolt 6 Manoeuvre the side pellet store into position alongside right hand side of the...

Page 45: ...on each side of the V line up with the holes in the top edges of the side panels on both the boiler and side pellet store 15 Secure the channel in place using the six screws previously removed from t...

Page 46: ...s 2 Feed the grey cable from the side pellet store lid cut out switch through the opening between the side pellet store and the boiler and into the boiler casing 3 Route the cable up inside the right...

Page 47: ...topped up DO NOT PUT PELLETS INTO THE BOILER PELLET HOPPER AT THIS TIME 6 The side pellet store auger should start operating to transfer pellets from the side pellet store into the boiler pellet hopp...

Page 48: ...pump is fitted that a condensate holding tank of at least 40 litres capacity has also been installed Refer to Section 5 11 2 5 Flue System Check the following The correct flue system has been used Onl...

Page 49: ...block will still be live when the isolator is set to OFF If required the electrical supply to boiler should be isolated at the fused spur supplying the heating system and controls WARNING Figure 11 4...

Page 50: ...ted in the correct side of the secondary heat exchanger NOTE With the hinged hopper lid open and both top access cover and heat exchanger cover removed as per Section 11 3 3 Check that the spiral baff...

Page 51: ...st 3 minutes or until a steady stream of pellets are heard dropping into the burner The control panel LCD screen shows the countdown time remaining from 5 minute start point If necessary the Prime Aug...

Page 52: ...e knurled knob in the centre of the hatch approximately one turn anticlockwise pull the hatch out of the flue and inspect the inside of the flue system Unscrew and remove the test point screw to inser...

Page 53: ...are two different types of spiral baffle fitted to the secondary heat exchanger The spiral baffles fitted to the right hand side have a 2 turn spiral and are different to those on the left hand side w...

Page 54: ...e brazier base plate To remove the brazier cotter pin The multi purpose tool is hung on a hook located on the panel to the left of the combustion chamber door Always replace the tool back on this hook...

Page 55: ...necessary remove any obstructions e g leaves etc Check that the combustion air inlet to the burner located in the font of the boiler is unobstructed 12 6 Boiler 12 6 1 Overheat thermostat and Tempera...

Page 56: ...2 5 Secondary heat exchanger spirals Clean down any ash inside tubes using a suitable pipe brush into the base of the condensing heat exchanger below Clean all ash deposits from top chamber of seconda...

Page 57: ...ash pan as smouldering ash could be present and cause serious damage to persons or property Ensure the ash is disposed of in a safe manner CAUTION When carrying the ash pan use both the multi purpose...

Page 58: ...of brazier front plate Using the multi purpose tool supplied with the boiler remove the brazier base plate from the lower front of the burner housing Refer to Figure 12 14 Figure 12 14 Removal of bra...

Page 59: ...burner housing NOTE Re fit the brazier base plate into the lower front of the burner housing using the multi purpose tool supplied with the boiler Re fit the brazier front plate onto the lower front o...

Page 60: ...et Check entire length of disposal pipe for any leaks or blockages Thoroughly clean to remove any deposits or replace as neces sary Dismantle and Check that any outlets to a gully or hopper are not ob...

Page 61: ...code Safety Relay Fault 1 Auger Monitor Fault 2 Failed Pellet Lighting 2 Ignition Monitor Fault 3 Safety Charge Pipe Stat 3 Overheat Thermostat 4 Servo Motor Blocked 8 Flue Fan Ignition Rate 10 Flue...

Page 62: ...Section 13 Fault Finding Page 62 13 2 Fault Details 13 2 1 Failed Pellet Lighting...

Page 63: ...Section 13 Fault Finding Page 63 13 2 2 Overheat Thermostat...

Page 64: ...N A Shaker box gasket VEC015 1 N A Photocell WPS09 1 N A Photocell tube VEC016 1 N A Ignition element WPS10A 1 N A Ignition element tube VEC017 1 N A Ash pan VEC018 1 N A Carry handle Special please...

Page 65: ...ide Store Parts List Item Description Grant UK product code Quantity N A Auger motor SPG Special please call Grant UK 1 N A Low fuel warning microswitch Special please call Grant UK 1 N A Low fuel dia...

Page 66: ...sts with Ministers in the devolved administrations for those countries Separate legislation the Clean Air Northern Ireland Order 1981 applies in Northern Ireland Therefore it is a requirement that fue...

Page 67: ...ctromagnetic Compatibility Directive and its amending directives 92 42 EC Conforms with the requirements of the Boiler Efficiency Directive Has been designed and manufactured to the following specific...

Page 68: ...d eyes After handling always follow normal good hygiene practices Protection Use disposable gloves face mask and eye protection First Aid Eyes if irritation occurs wash eyes with copious amounts of wa...

Page 69: ...cing Instructions provided with the boiler For guidance on the disassembly of the boiler refer to the information given in the Servicing section of the Installation Servicing Instructions provided wit...

Page 70: ...Limited Ensure the boiler has been installed commissioned and serviced by a competent person in accordance with the installation and servicing instructions Ensure there is an adequate quantity of the...

Page 71: ...nce with the manufacturer s installation and servicing instructions The boiler is registered with the Company within thirty days of installation4 Failure to do so does not affect your statutory rights...

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...

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