Grant UK VortexBlue · operation of the Grant VortexBlue range of high efficiency oil fired ......

UK | DOC 0108 | Rev 2.5 | June 2018

Grant UK VortexBlueInternal, Internal System, External, Combi and External Combi Blue Flame Oil Boiler Range

Supplementary User, Installation and Servicing Instructions

Grant EnGinEErinG (UK) LimitEd

Hopton House, Hopton Industrial Estate, Devizes, Wiltshire, SN10 2EUTel: +44 (0)1380 736920 Fax: +44 (0)1380 736991Email: [email protected] www.grantuk.com

This manual is accurate at the date of printing but will be superseded and should be disregarded if specifications and/or appearances are changed in the interests of continued product improvement. 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.

All good sold are subject to our official Conditions of Sale, a copy of which may be obtained on application.

© Grant Engineering (UK) Limited. No part of this manual may be reproduced by any means without prior written consent.

important notE for instaLLErsThese instructions are intended to guide Installers on the installation, commissioning and servicing of the Grant Vortex oil boiler. After installing the boiler, leave these instructions with the user.

spEciaL tExt formatsThe following special text formats are used in these instructions for the purposes listed below:

! WarninG !Warning of possible human injury as a consequence of not following the instructions in the warning.

! caUtion !caution concerning likely damage to equipment or tools as a consequence of not following the instructions in the caution.

! notE !Used for emphasis or information not directly concerned with the surrounding text but of importance to the reader.

prodUct codEs coVErEdThese instructions cover the following product codes:VTXBF21, VTXBF26, VTXBF36, VTXSBF21, VTXSBF26, VTXSBF36, VTXBFCOMBI21, VTXBFCOMBI26, VTXBFCOMBI36, VTXBFOMCOMB21, VTXBFOMCOMB26 and VTXBFOMCOMB36these supplementary instructions must be read in conjunction with the Vortex boiler installation instructions supplied with the boiler.

sErVicinGThe boiler should be serviced at least every twelve months.

fUEL tYpEAll Grant Vortex boilers are suitable for use with Class C2 Kerosene. To use Bio-Kerosene (B30K), refer to the information below:

opEration on Bio-fUELAll Grant Vortex condensing boilers manufactured since May 2011 are suitable for for operation on both standard Kerosene (Class C2 to BS 2869) and also bio-kerosene - up to a 30% blend (B30K).All burner settings and nozzle sizes (as detailed in Section 2.2 of these instructions) are correct for both standard kerosene and bio-kerosene (B30K).In order to operate this boiler on bio-kerosene, it will be necessary to take the following actions:• Useabio-kerosene(B30K)compatibleflexibleoillinein

place of the oil line supplied with the boiler.• Have the oil storage tank and oil supply line (including all

pipework,sightgauges,filters,isolatingvalves,firevalves,de-aeration devices, etc.) checked for their compatibility with bio-kerosene (B30K).Where necessary, some or all of these items may have to be replaced with a bio-kerosene compatible alternative.

• CheckthesuitabilityofthefluesystemwithGrantUK.• Use only bio-kerosne (B30K) that conforms to OPS24.

important:Under no circumstances, should the boiler be used with bio-kerosene without the above actions being taken first.

Contents Page 03

Contents

1 User Instructions 4 1.1 VortexBlue Internal, Internal 4 System Boilers and External Modules 1.2 VortexBlue Combi Boilers (Internal and 4 External models) 1.3 Control Panels 5 2 Introduction 6 2.1 Update to Main Installation Instructions 6 2.2 General 6 2.3 Low NOx Technology 6 2.4 Boiler Controls 6 2.5 Fuel Type 6 2.6 Sealed Systems 6

3 Technical Data 7 3.1 Boiler Technical Data 7 3.2 Boiler Clearances 8 3.3 Burner Settings 9 3.4 Boiler Dimensions 10

4 Installation 13 4.1 General 13

5 Electrical 13 5.1 General 13 5.2 Frost Protection 13 5.3 VortexBlue Internal and 13 Internal System models 5.4 VortexBlue External Modules 14 5.5 VortexBlue Combi Boilers and 14 External Combi Boilers 5.6 Wiring Diagrams 15

6 Commissioning 22 6.1 General 22 6.2 Ignition Electrode Setting 22 6.3 Air Damper Adjustment 22 6.4 Air Adjuster Disc - 15-21 model only 22

7 Servicing 23 7.1 General 23

8 Burner 24 8.1 General 24 8.2 Burner Features 24 8.3 Digital Control Box 25 8.4 Burner Operation 26

9 Fault Finding 28 9.1 Burner Fault Indication 28 9.2 Burner Fault Diagnostics 28 9.3 Riello RDB BLU Fault Finding Chart 29

10 Spare Parts 30 10.1 Riello RDB BLU Burner Parts List 30 10.2 Exploded View of Riello RDB BLU Burner 31

Page 03

User InstructionsPage 04

These User Instructions are intended to assist the user in the operation of the Grant VortexBlue range of high efficiency oil fired boilers. Please refer to the section that applies to your particular boiler model.

1.1 VortexBlue Internal, Internal System Boilers and External ModulesThe boiler is fully automatic once switched on, providing central heating (and also heating your domestic hot water if you have a hot water cylinder fitted).

For guidance on how to use your Grant VortexBlue Internal boiler (or Internal System boiler) please refer to the User Instructions for the Grant Vortex Internal boiler.

These are to be found at the back of the Installation Instructions supplied with the boiler.

The Grant VortexBlue Internal (and Internal System) boilers dif fer from the standard version of the Grant Vortex, as follows:a) The use of the Riello RDB BLU blue flame burner – refer

to Section 7 (installer section) of these Supplementary Instructions for details.

b) A new boiler control system with electronic temperature control and LED boiler function indication.

NOTE!

1.1.1 Boiler ControlsPlease refer to the following for details of the boiler control panels. For all other details refer to the User Instructions supplied with the boiler.

To access the control panel, pull off the front door panel from the boiler. The controls on the panel are as follows (refer to Figures 1-1 to 1-3 as appropriate).

• Boiler On/Off switchThis switches the boiler on and off. The boiler ON/OFF switch incorporates a 'mains on' neon which lights when the boiler is switched on. Please note that the 'mains on' neon does not necessarily indicate that the burner if firing. See Boiler Indicator Lights information in the next column.

When the ON/OFF switch is set to on, the POWER indicator LED on the control panel will also light. This also does not necessarily indicate that the boiler is firing.

If the ON/OFF switch is set to off the boiler will NOT supply central heating or heat domestic hot water (if a hot water cylinder is connected to the boiler). The built-in frost thermostat will also not operate.

NOTE!

• Service Switch (External Modules only)A Service switch is fitted to the control panel to allow the Service Engineer to test-fire the boiler.

1 User Instructions

• Heating ThermostatThis control allows the temperature of the water leaving the boiler to heat the radiators (and domestic hot water) to be adjusted. This will be set by the installer to the optimum temperature for efficient operation of the boiler. It should be left set in this position.

• Boiler Indicator LightsThese five red LEDs, located on the boiler control panel, indicate the operating situation of the boiler as below: PUMP Power to the system circulating pumpPOWER Mains power to the boiler is switched on DEMAND Demand for heating (and/or hot water) from the heating system controls.OVERHEAT Boiler overheat thermostat has operated and switched the boiler off.BURNER Power to the burner for it to operate.

• Overheat Thermostat (Overheat Reset)The boiler is fitted with a safety overheat thermostat which will automatically switch off the boiler in the case of a control malfunction causing overheating.

• System Pressure Gauge(Internal System models only)

This is to indicate the water pressure in the sealed heating system.

1.1.2 Lighting the BoilerPlease follow the guidance for lighting the boiler given in the User Instructions supplied with the boiler.

If the reset push-button LED on the burner indicates a lockout (refer to Section 8.3.3), press the reset button to attempt to re-start the burner. If the burner then operates correctly the lockout may have been caused by a temporary fault that has now cleared. If the lockout persists the cause of the fault should be diagnosed and rectified.

To operate the reset push-button it must be pressed in and briefly held (for at least one second) before releasing.

NOTE!

1.2 VortexBlue Combi Boilers (Internal and External models)For guidance on how to use your Grant VortexBlue Combi boiler, please refer to the User Instructions for the Grant Vortex Combi boiler (or External Combi boiler).

These are to be found at the back of the Installation Instructions supplied with the boiler.

User Instructions Page 05

Figure 1-1: VortexBlue Internal Control Panel

Figure 1-2: VortexBlue Internal System Control Panel

Figure 1-3: VortexBlue External Module Control Panel

1.3 Control Panels

These supplementary Instructions must be read in conjunction with the Vortex boiler Installation Instructions supplied with the boiler.

Both the Vortex boiler Installation Instructions and these Supplementary Instructions must be lef t with the User on completion of Installation and Commissioning.

NOTE!

2.1 Update to Main Installation InstructionsThese Supplementary Instructions are designed to cover the dif ferences between the Grant Vortex and the new Grant VortexBlue low NOx boilers, as much of the installation, commissioning, servicing and operation is identical to the standard Vortex boilers.

The following sections of the Vortex Installation Instructions (supplied with the boiler) have not been changed and should be referred to during the installation and commissioning of this boiler:• Section 3 Oil Supply and Storage• Section 5 Pipe Connections• Section 6 Condensate Disposal• Section 7 Sealed Systems Refer to Section 2.6 of these instructions• Section 9 Flues and Air Supply• Section 14 Health and Safety Information• Section 16 Guarantee

2.2 GeneralThe new Grant VortexBlue range of high efficiency low NOx oil fired boilers consists of 15 models including Internal, Internal System and External Modules as well as both Internal and External Combi boilers.

All models are available in three outputs – 21kW, 26kW and 36kW. The Internal, Internal System and External Modules are supplied factory set at the maximum outputs of 21kW, 26kW and 36kW but can be de-rated to a lower output on commissioning if required. Refer to Section 3.3 of these Supplementary Instructions for a full list of all models and outputs.

2.3 Low NOx TechnologyGrant VortexBlue boilers are designed to meet both the forthcoming European Ecodesign (ErP) emissions limits due to be introduced in September 2018, and to maintain the high efficiencies expected of Grant Vortex oil fired boilers.

They combine the proven Grant condensing boiler technology with the Riello RDB BLU compact low NOx blue flame burners.

Grant VortexBlue boilers can be used with all the Grant flue system options available for the standard Vortex boilers. Refer to the Installation Instructions supplied with the boiler for details.

2 Introduction

2.4 Boiler Controls2.4.1 Combi BoilersThe Grant VortexBlue Combi boilers (internal and external) have the same electronic control system as fitted to the standard Vortex Combi models.

All wiring details for external controls (programmers, room thermostats, etc.) are given in Section 8 of the Vortex Combi Installation Instructions provided with the boiler.

2.4.2 Internal boilers and External ModulesThe Grant VortexBlue Internal boilers and External Modules incorporate a new electronic control system based on the one used in the Grant Vortex Pro Combi boilers.

This uses an electronic boiler thermostat and has LED lights to indicate the operating status of the boiler. For details on how to operate the boiler please refer to Section 1.

Refer to Section 5 of these Supplementary Instructions for further details and electrical connection diagrams.

A service switch is fit ted to the control panel of the external modules to allow the service engineer to test-fire the boiler.

When set to 'ON' the switch temporarily by-passes the external control system to operate the boiler.

This is a 'momentary' or non-latching switch that cannot be lef t set to 'ON'. The boiler will automatically revert to normal operation when 15 minutes have elapsed since it was last operated.

If required, this 15 minute override period can be stopped by switching the boiler ON/OFF switch 'OFF' and then back to 'ON'.

The boiler will then operate as normal under control of the external heating/hot water controls (timer, room thermostat or programmer).

NOTE!

2.5 Fuel TypeAll VortexBlue boilers are designed for use with Kerosene (Class C2) only.

The use of any other fuel, e.g. Gas Oil (Class D), is not permitted with any of the VortexBlue boilers and may invalidate the product guarantee.

2.6 Sealed SystemsThe following sealed system kits are available for the external modules:

VortexBlue External Grant UK product code

VTXBFOM21VTXOMSSKIT26

VTXBFOM26

VTXBFOM36 VTXOMSSKIT46

Section 2: IntroductionPage 06

Section 3: Technical Data

3.1 Boiler Technical Data3.1.1 Internal, Internal System and External

Table 3-1: Internal, Internal System and External Technical Data

UnitsInternal and Internal System External

21 26 36 21 26 36

Output (Kerosene)

kW 15-21 21-26 26-36 15-21 21-26 26-36

Btu/h 51,200 - 71,00

71,700 - 88,700

88,700 - 123,000

51,200 - 71,00

71,700 - 88,700

88,700 - 123,000

Water contentlitres 19 19 21 19 19 21

gall 4.2 4.2 4.7 4.2 4.2 4.7

Weight (dry)*kg 130 130 144 143 143 162

lbs 287 287 318 315 315 357

Heating system flow connection mm 22 22 28 22 22 28

Heating system return connection mm 22 22 28 22 22 28

Minimum flow rate (∆T=10°C) l/h 1,800 2,200 3,000 1,800 2,200 3,000

Minimum flow rate (∆T=20°C) l/h 900 1,100 1,500 900 1,100 1,500

Condensate connection 22 mm (only connect plastic pipe)

Flue diameter (conventional) 100 mm (4 inches)

Waterside resistance (∆T=10°C) mbar 26

Waterside resistance (∆T=20°C) mbar 9.5

Maximum static head m 28

Minimum circulating head m 1

Boiler thermostat range °C 65 to 78

Limit (safety) shut off temperature °C 111±3

Maximum hearth temperature °C Less than 50

Electricity supply ~230V 1ph 50Hz 5A fused

Burner motor power W 90

Absorbed motor power W 0.15

Starting current A 2.0

Running current A 0.85

Oil connection ¼" BSP male (on end of flexible fuel hose)

Conventional flue draughtN/m² Minimum: 8.7 - maximum: 37

in wg Minimum: 0.035 - maximum: 0.15

Maximum operating pressure - sealed/open system bar 2.0

Maximum operating pressure - pressure relief valve bar 2.5

* Weight includes burner but excludes flue.

3 Technical Data


3.1.2 Internal Combi and External Combi

Table 3-2: Internal Combi and External Combi Technical Data

UnitsInternal Combi External Combi

21 26 36 21 26 36

Output (Kerosene)kW 21 26 36 21 26 36

Btu/h 71,700 88,700 123,000 71,700 88,700 123,000

Water content (including 32 litre primary store)litres 48.5 48.5 53.5 48.5 48.5 53.5

gall 10.7 10.7 11.8 10.7 10.7 11.8

Weight (dry)*kg 160 177 200 181 206 225

lbs 353 390 441 399 454 496

Maximum heat output (Kerosene)kW 21 26 36 21 26 36

Btu/h 71,700 88,700 123,000 71,700 88,700 123,000

Heating system flow and return connections mm 22 22 28 22 22 28

Cold water mains inlet mm 15 15 22 15 15 22

Domestic hot water outlet mm 15 15 22 15 15 22

Minimum flow rate ∆T=10°C l/h 1 800 2 200 3 000 1 800 2 200 3 000

Minimum flow rate ∆T=20°C l/h 900 1 100 1 500 900 1 100 1 500

Condensate connection 22 mm plastic pipe

Flue diameter (conventional) 100 mm (4 inches)

Waterside resistance ∆T=10°C mbar 28.5 28.5 26 28.5 28.5 26

Waterside resistance ∆T=20°C mbar 10.0 10.0 9.5 10.0 10.0 9.5

Boiler stat range °C 65 to 78

Limit stat shut off temperature °C 111±3

Maximum hearth temperature °C Less than 50

Electricity supply 230/240V 1ph 50Hz fused at 5A

Burner motor power W 90

Absorbed motor power W 0.15

Starting current A 2.0

Running current A 0.85

Oil connection ¼" BSP male (on end of flexible fuel hose)

Conventional flue draughtN/m² Minimum: 8.7 - maximum: 37

in wg Minimum: 0.035 - maximum: 0.15

Maximum operating pressure - pressure relief valve bar 2.5

* Weight includes burner but excludes flue

3.2 Boiler ClearancesAdequate clearance must be left for servicing the boiler.

For guidance on the clearances required, please refer to the 'Boiler Location' information given in the 'Installation Information' section of the Installation Instructions supplied with the boiler.


3.3 Burner Settings

Table 3-3: Burner settings

Boiler models(burner type)

Heat outputnozzle

oil pressure

(bar)smoke

no.Burner head type

Burner head/

air disc setting

fuel flow rate

(kg/h)

flue gas temp. (°c)

co2(%)

flue gas

Vfr ‡(m³/hr)

(kW) (Btu/h)

Internal 21Internal System 21

External 21(RDB2.2 BG1 BLU 21)

15.0 51,200 0.40/80°ES 9.0 0 - 1 BG1 B 1.25 65 - 75 12.0 16.0

18.0 61,400 0.55/80°ES 8.0 0 - 1 BG1 N/A 1.50 65 - 75 12.0 20.0

21.0 * 71,700 0.60/80°ES 8.5 0 - 1 BG1 N/A 1.75 70 - 80 12.0 23.0



21.0 71,700 0.60/80°ES 8.5 0 - 1 BG2 N/A 1.75 60 - 65 12.0 23.0

23.0 78,500 0.65/80°ES 8.5 0 - 1 BG2 N/A 1.91 65 - 70 12.0 25.5

26.0 * 88,700 0.65/80°ES 10.0 0 - 1 BG2 N/A 2.16 75 - 80 12.0 28.5



26.0 88,700 0.65/80°ES 10.0 0 - 1 BG3+ N/A 2.16 67 - 70 12.0 28.5

31.5 * 107,500 0.85/80°ES 9.0 0 - 1 BG3+ N/A 2.62 70 - 75 12.0 34.5

36.0 123,000 0.85/80°ES 11.0 0 - 1 BG3+ N/A 2.99 75 - 80 12.0 39.5

Internal Combi 21External Combi 21

(RDB2.2 BG1 BLU 21)21.0 71,700 0.60/80°ES 8.5 0 - 1 BG1 N/A 1.75 70 - 80 12.0 23.0


(RDB2.2 BG2 BLU 26)26.0 88,700 0.65/80°ES 10.0 0 - 1 BG2 N/A 2.16 75 - 80 12.0 28.5


(RDB2.2 BG3 BLU 36)

31.5* 107,500 0.85/80°ES 9.0 0 - 1 BG3+ N/A 2.62 70 - 75 12.0 34.5

36.0 123,000 0.85/80°ES 11.0 0 - 1 BG3+ N/A 2.99 75 - 80 12.0 39.5

Notes: † Refer to Section 10.2 (Burner Settings: RDB2.2 BX burners) ‡ FluegasVFR:Fluegasvolumetricflowrate

1. The data given above is approximate only.2. The above settings may have to be adjusted on site for the correct operation of the burner.3. Gas Oil and Bio Kerosene are NOT suitable for use with Grant VortexBlue boiler range4. The flue gas temperatures given above are ± 10%.5. When commissioning, the air damper must be adjusted to obtain the correct CO2 level.6. * Factory settings: 15-21 - 21kW, 21-26 - 26kW, 26-36 - 31.5kW, Combi 36 - 31.5kW7. When setting the 15-21 to 15kW, the burner air adjuster disc (Grant UK product code: RBS215) must be fitted and positioned to disc setting B. Refer to

Section 6.4. This disc is NOT supplied with the boiler but can be obtained free-of-charge by contacting Grant UK.8. The installer must amend the boiler data label if the output is changed.


3.4 Boiler DimensionsAll dimensions in the following diagrams are in millimetres.

Alternativecondensatedrain outlets

FRONT VIEW

470

860

LEFT SIDEVIEW

813

759

709

587

352

18

17

11030 Flue centre line

RIGHT SIDE VIEW

PLAN VIEW

470

603

110

Safety valveCold fillFlow - 22mm push-fit

170Fluespigot

Figure 3-4: VortexBlue Internal 21, Internal 26, Internal System 21 and Internal System 26 dimensions

Safety valveFlow - 28mm push-fitCold fill

61170 61

LEFT SIDE VIEW45555

5

311

24

11563 63Flue centre line

RIGHT SIDE VIEW

PLAN VIEW

470

603

150

FRONT VIEW

470

900

205Fluespigot

Alternativecondensatedrain outlets

Figure 3-5: VortexBlue Internal 36 and Internal System 36 dimensions


Pre-cut holefor side flue exitif required

4 pre-cutholes 50 mm dia.in sidesboth

1005509797

269

908

11750

757A

660

418179

21 and 26kW: A = 80436kW: A = 824

Plan View

132

180

180

=

=

3 pre-cut holes76 mm dia. in baseof boiler enclosure

Figure 3-6: VortexBlue External 21, External 26 and External 36 dimensions

RIGHT SIDE VIEWLEFT SIDE VIEW

PLAN VIEW

REAR VIEW

90

7575

90

202 210

760

690

140

614

307

105

ø 110

ø 155

17

35

227

588

100

699

125

444

99

609

ø 31

ø 31

ø 31

INTERNAL DRAIN TRAP EXIT (LEFTSIDE PANEL ONLY)

ø 25

858

Figure 3-7: VortexBlue Internal Combi 21 and 26 dimensions


RIGHT SIDE VIEWLEFT SIDE VIEW

PLAN VIEW

REAR VIEW

90

6262

90

182 250

779

694

170

614

307

106

ø 110

ø 185

18

60

190

556

100

695

170

445

106

609

ø 31

ø 31

ø 31

INTERNAL DRAIN TRAP EXIT (LEFTSIDE PANEL ONLY)

ø 25

900

Figure 3-8: VortexBlue Internal Combi 36 dimensions

966

239

Combi 21e, 26eCombi 36e

Side flue exitif required

Pre-cut hole 75 x 150mm ineach side of boiler enclosure

2 pre-cut holes in baseof boiler enclosure

115mm dia.

754

836

150

73

7533

945

33

75

150

49

49

150

658

Plan View

Figure 3-9: VortexBlue External Combi 21, 26 and 36 dimensions

Section 4: Installation and Section 5: Electrical

4.1 GeneralFor full details on the installation of this boiler, please refer to the following sections of the Installation Instructions supplied with the boiler:

• Installation Information• Pipe Connections• Condensate Disposal• Sealed Systems• Flue System & Air Supply

4 Installation

5.1 GeneralFor details on the electrical installation requirements for this boiler please refer to the Installation Instructions supplied with this boiler in conjunction with the information given below.

5.2 Frost ProtectionThe Internal, Internal System and External Modules are all fitted with pre-set internal frost protection.

This will automatically start the circulating pump if either:a) The air temperature (sensed on the boiler control PCB) falls

below 5°C, orb) The water temperature (sensed by the boiler control thermistor)

falls below 8°C

If after fif teen minutes the air temperature exceeds 10°C or the water temperature exceeds 15°C the circulating pump will stop.

However, if af ter fif teen minutes either the air or water temperature is less than 10°C, the burner is automatically fired until the water temperature reaches 30°C, when the burner stops and there is a pump overrun of two minutes.

Also, to protect any exposed heating system pipework, it is recommended that an 'external' frost thermostat is also installed. This frost thermostat will operate in parallel with the internal frost protection of the boiler.

It should be sited within the house in such a place that it can detect any rise and fall in the ambient air temperature, i.e. in a room with a radiator.

Where the frost thermostat is installed outside the house (to protect a boiler installed in an external boiler room or garage) or in an attic, it is recommended that it be used in conjunction with a pipe thermostat to avoid unnecessary and wasteful overheating of the property. The pipe thermostat should be located on the boiler return pipe, and set to operate at 30°C.

For connection details please refer to Figures 5-4 and 5-5

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.

NOTE!

5 Electrical

5.3 VortexBlue Internal and Internal System models5.3.1 Connecting Power Supply, Pump and Control SystemThe boiler requires both a switched live, from an external programmer or control system AND a permanent live power supply.

This permanent live supply is essential for the fan post purge operation.

Failure to fit BOTH a switched live and permanent live may cause damage to the burner.

Do not interrupt the permanent mains supply to the boiler with any external control, e.g. a timer, programmer, or room thermostat.

NOTE!

The boiler must be wired as shown in Figures 5-4 and 5-5, i.e. with both a permanent live supply AND a separate switched live (from the heating system controls).

No permanent live supply to the boiler can result in damage to the burner.

This will not be covered by the boiler product guarantee.

! WARNING

There is no facility in the Grant VortexBlue Internal and Internal System boilers for the fitting of a plug-in timer or programmer.A 4-core cable (3-core and earth) is required to connect the power supply and heating controls to the boiler.

On Internal models a 3-core cable (2-core and earth) is required to connect the circulating pump to the boiler.

For control system wiring please refer to Figures 5-4 and 5-5

Ensure that the route and length of the supply and pump cables are such that the boiler control panel can be fully hinged down without needing to disconnect them from the terminal block.

NOTE!

The procedure is as follows:1. Lif t off the boiler top front casing panel, if it has not already

been removed.2. Loosen (do not remove) the four screws securing the control

Section 5: Electrical

panel to the side panels, hinge the panel forward and allow it to drop down to gain access to the top of the panel.

3. Remove the two screws securing the terminal block cover and lif t off the cover.

4. Remove the screws securing the cable clamp and open clamp. 5. Route the supply cable through the hole in the rear panel (using

the grommet supplied) and up to the control panel6. Pass the 4-core cable through the cable clamp and connect to

the boiler control panel terminals as follows:• Green/Yellow to mains earth (terminal 1)• Blue to mains neutral (terminal 2)• Brown to mains live (terminal 3)• Black to switched live (terminal 19)On Internal models - pass the 3-core cable from the pump through the cable clamp and connect to the boiler control panel terminals as follows:• Green/Yellow to pump earth (terminal 4)• Blue to pump neutral (terminal 5)• Brown to pump live (terminal 6)

7. Tighten the cable clamp and refit the terminal block cover8. Re-connect the electrical supply and check operation of

heating system controls (programmer, room thermostats, etc.).9. Refer to Instructions provided with the programmer for

operation and setting.10. Leave the Programmer and Thermostat Instructions with the

user after installation for their future reference.

5.3.2 Circulating PumpOn the Internal System models, the circulating pump is factory fitted within the boiler enclosure and the pump is wired to the pump terminals on the control panel terminal block.

On Internal models the pump should also be connected directly to the control panel terminal block. Refer to Section 5.3.1.

Connected this way allows the pump to be isolated using the Boiler ON/OFF switch, on the boiler control panel, for servicing or maintenance work.

Also, the boiler control automatically provides a short pump 'overrun' (two minutes) after the burner is shut down (when the heat demand is interrupted), e.g. when the room thermostat is satisfied. This pump overrun will not occur if the boiler power supply is interrupted, e.g. if the boiler ON/OFF switch is set to off.

5.4 VortexBlue External Modules5.4.1 Connecting Power Supply, Pump and Control SystemThe boiler requires both a switched live, from an external programmer or control system, in addition to a permanent live power supply.

Do not interrupt the permanent mains supply to the boiler with any external control, e.g. a timer, programmer, or room thermostat.

NOTE!

The boiler must be wired as shown in Figures 5-4 and 5-5, i.e. with both a permanent live supply AND a separate switched live (from the heating system controls).

No permanent live supply to the boiler can result in damage to the burner. This will not be covered by the boiler product guarantee.

! WARNING

There is no facility in the Grant VortexBlue External Module for the fitting of a plug-in timer or programmer.A 4-core cable (3-core and earth) is required to connect the power supply and heating controls to the boiler.

A 3-core cable (2-core and earth) is required to connect the circulating pump to the boiler.

For control system wiring, refer to Figures 5-4 and 5-5.

Ensure that the route and length of the supply cable is such that the boiler control panel can be fully hinged down without disconnecting the supply cable from the terminal block.

NOTE!

The procedure is as follows:1. Remove the module front door panel, if it has not already been

removed.2. Remove the four screws securing the front of the control panel

and allow it to drop down to gain access to the top of the panel.

3. Remove the screws securing the cable clamp and open clamp. 4. Route the supply and pump cables up to the control panel.5. Pass the 4-core cable through the cable clamp and connect to

the boiler control panel terminals as follows:• Green/Yellow to mains earth (terminal 1)• Blue to mains neutral (terminal 2)• Brown to mains live (terminal 3)• Black to switched live (terminal 19)

6. Pass the 3-core cable from the pump through the cable clamp and connect to the boiler control panel terminals as follows:• Green/Yellow to pump earth (terminal 4)• Blue to pump neutral (terminal 5)• Brown to pump live (terminal 6)

7. Tighten the cable clamp and refit the front of the control panel.8. Re-connect the electrical supply and check operation of

heating system controls (programmer, room thermostats, etc.).9. Refer to Instructions provided with the programmer for

operation and setting.10. Leave the Programmer and Thermostat Instructions with the

user after installation for their future reference.

5.4.2 Connection of the Circulating PumpThe circulating pump should be connected directly to the control panel terminal block. Refer to Section 4.4.1.

Connecting the pump in this way allows it to be isolated using the Boiler On/Off switch, on the boiler control panel, for servicing or maintenance work.

Also, when the pump is connected this way, the boiler control automatically provides a short pump 'overrun' (2 minutes) after the burner has shut down (when the heat demand is interrupted), e.g. when the room thermostat is satisfied. This pump overrun will not occur if the boiler power supply is interrupted, e.g. if the boiler ON/OFF switch is set to off.

5.5 VortexBlue Internal Combi and External Combi Boilers5.5.1 Connecting the Power Supply and Control SystemFor details on the electrical installation requirements for the Combi or External Combi, please refer to Section 8 of the Installation Instructions supplied with this boiler.


12

3E

NL

45

6E

NL

78

9E

NL

1011

12E

NL

1820

2122

1516

1314

2526

2324

1719

2728

PUMP EARTH

PUMP NEUTRAL

PUMP LIVE

DO NOT CONNECT

DO NOT CONNECT

DO NOT CONNECT

BURNER EARTH

BURNER NEUTRAL

BURNER LIVE

DO NOT CONNECT

DO NOT CONNECT

DO NOT REMOVE LINKDO NOTREMOVELINK

DO NOT CONNECT

SWITCHED LIVE

TIMER NEUTRAL

TIMER LIVE

STORETHERMISTOR(TO FRONT POCKET)

FLOWTHERMISTOR(TO TOP POCKET)

MAI

NS

1A

2A

4B

5B

Boile

rO

n/O

ff

Off

Off

Cons

tant

Tim

edTi

med

Cons

tant

Cent

ral

Hea

ting

Switc

h

Dom

estic

Hot

Wat

erSw

itch

2

C

Lim

itTh

erm

osta

tEa

rth c

onne

ctio

nbo

iler t

op b

rack

et

Prin

ted

Circ

uit B

oard

FUSE

5 X

20 N

L23

0V 5

A Fu

sed

Supp

ly

N

E

Flow

Ther

mist

or

Blac

k sh

roud

indi

cate

sFl

owTh

erm

istor

Link

Link

Burn

er

Resis

tor

DO NOT CONNECT

DO NOT CONNECT

DO NOT CONNECT

DO NOT REMOVE LINK

DO NOT REMOVE LINK

SLL

Link

BURNERPERMANENT LIVE

PERMANENT LIVE

Fig

ure

5-1:

Vor

texB

lue

Inte

rnal

con

trol p

anel

wiri

ng d

iagr

am

5.6 Wiring Diagrams


12

3E

NL

45

6E

NL

78

9E

NL

1011

12E

NL

1820

2122

1516

1314

2526

2324

1719

2728

PUMP EARTH

PUMP NEUTRAL

PUMP LIVE

DO NOT CONNECT

DO NOT CONNECT

DO NOT CONNECT

BURNER EARTH

BURNER NEUTRAL

BURNER LIVE

DO NOT CONNECT

DO NOT CONNECT


DO NOT CONNECT

SWITCHED LIVE

TIMER NEUTRAL

TIMER LIVE



MAI

NS

1A

2A

4B

5B

Boile

rO

n/O

ff

Off

Off

Cons

tant

Tim

edTi

med

Cons

tant

Cent

ral

Hea

ting

Switc

h

Dom

estic

Hot

Wat

erSw

itch

2

C

Lim

itTh

erm

osta

tEa

rth c

onne

ctio

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iler t

op b

rack

et

Prin

ted

Circ

uit B

oard

FUSE

5 X

20

EN

L

NL

Blac

kCa

ble

230V

5A

Fuse

dSu

pply

N

E

Flow

Ther

mist

or

Blac

k sh

roud

indi

cate

sFl

owTh

erm

istor

Link

Link

Pum

pBu

rner

Resis

tor


DO NOT CONNECT

DO NOT CONNECT

DO NOT CONNECT

DO NOT REMOVE LINK

DO NOT REMOVE LINK

SLL

Link

PERMANENT LIVE

Fig

ure

5-2:

Vor

texB

lue

Inte

rnal

Sys

tem

con

trol p

anel

wiri

ng d

iagr

am


12

3E

NL

45

6E

NL

78

9E

NL

1011

12E

NL

1820

2122

1516

1314

2526

2324

1719

2728

PUMP EARTH

PUMP NEUTRAL

PUMP LIVE

DO NOT CONNECT

DO NOT CONNECT

DO NOT CONNECT

BURNER EARTH

BURNER NEUTRAL

BURNER LIVE

DO NOT CONNECT

DO NOT CONNECT


DO NOT CONNECT

SWITCHED LIVE

TIMER NEUTRAL

TIMER LIVE



MAI

NS

1A

2A

4B

5B

Boile

rO

n/O

ff

2

C

Lim

itTh

erm

osta

tEa

rth c

onne

ctio

nbo

iler t

op b

rack

et

Serv

ice

Switc

h

Prin

ted

Circ

uit B

oard

FUSE

5 X

20 N

L23

0V 5

A Fu

sed

Supp

ly

N

E

Flow

Ther

mist

or

Blac

k sh

roud

indi

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owTh

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istor

Link

Link

Burn

er

Resis

tor

DO NOT CONNECT

DO NOT CONNECT

DO NOT CONNECT

DO NOT REMOVE LINK

DO NOT REMOVE LINK

SLL

Link

Link

Link


PERMANENT LIVE

Fig

ure

5-3:

Vor

texB

lue

Ext

erna

l Mod

ule

cont

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anel

wiri

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Cyl

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nt 2

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nnel

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l Mou

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HW

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T

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12

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NPL

- - --

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4 C

ore

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e fro

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ontro

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iring

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ler

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lue

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w

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rey

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wn

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wn

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p

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/Yel

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ENL

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SL

Fig

ure

5-4:

Vor

texB

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Inte

rnal

, Int

erna

l Sys

tem

and

Ext

erna

l Mod

ule

with

S-p

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type

con

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yste

m w

iring

dia

gram

The

bo

iler

mus

t be

wir

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s sh

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n in

this

wir

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dia

gra

m,

i.e. w

ith b

oth

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e (P

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ND

a s

epar

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switc

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live

(S

L) f

rom

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heat

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ls.

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per

man

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ive

(PL)

sup

ply

to th

e b

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r ca

n re

sult

in

dam

age

to th

e b

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r.

This

will

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t be

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the

bo

iler

pro

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t gua

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ee.

!W

AR

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G

Ear

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om

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al c

onn

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ave

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arit

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All

switc

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in th

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tion.

NO

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Cyl

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240V

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Link

OFF

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ON

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HW

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3-P

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alve

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12

34

56

78

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1820

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1516

1314

2526

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4 C

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Mot

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Link

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12

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5

RB

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Fig

ure

5-5:

Vor

texB

lue

Inte

rnal

, Int

erna

l Sys

tem

and

Ext

erna

l Mod

ule

with

Y-p

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dia

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Ear

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om

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ave

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All

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tion.

NO

TE!

The

bo

iler

mus

t be

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ed a

s sh

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n in

this

wir

ing

dia

gra

m,

i.e. w

ith b

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e (P

L) s

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ly A

ND

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epar

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switc

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(S

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rom

the

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No

per

man

ent l

ive

(PL)

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ply

to th

e b

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r ca

n re

sult

in

dam

age

to th

e b

urne

r.

This

will

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red

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iler

pro

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rant

ee.

!W

AR

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G

do

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wire

from

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rt v

alve

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rect

ly to

term

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19

(sL)

on

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the

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from

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conn

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19

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of t

he b

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pan

el,

the

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r will

con

tinue

to o

pera

te in

the

heat

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mod

e, a

s if

a he

atin

g de

man

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stil

l pre

sent

.fo

r cor

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ope

ratio

n, th

e or

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Ust

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the

coil

of th

e re

lay,

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show

n in

the

wiri

ng d

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ee f

igur

e 5-

5.th

is re

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ot

appl

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type

sys

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s us

ing

2-po

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one

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efer

to f

igur

e 5-

4.

NO

TE!


Fig

ure

5-6:

Vor

texB

lue

Inte

rnal

Com

bi c

ontro

l pan

el w

iring

dia

gram

12

3E

NL

45

6E

NL

78

9E

NL

1011

12E

NL

1820

2122

1516

1314

2526

2324

1719

2728

CH PUMP EARTH

CH PUMP NEUTRAL

CH PUMP LIVE

DHW PUMP EARTH

DHW PUMP NEUTRAL

DHW PUMP LIVE

BURNER EARTH

BURNER NEUTRAL

BURNER LIVE

FLOW SWITCH

FLOW SWITCH

DHW TIMED ON

CH TIMED ON

TIMER NEUTRAL

TIMER LIVE

EXT. FROST STAT

EXT. FROST STAT

ROOM STAT

ROOM STAT



MAI

NS

1A

2A

4B

5B

Boile

rO

n/O

ff

Off

Off

Cons

tant

Tim

edTi

med

Cons

tant

Cent

ral

Hea

ting

Switc

h

Dom

estic

Hot

Wat

erSw

itch

2

C

Lim

itTh

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osta

tEa

rth c

onne

ctio

nbo

iler t

op b

rack

et

Prin

ted

Circ

uit B

oard

FUSE

5 X

20

EN

LE

NL

CH Pum

pDH

WPu

mp

NL

Blac

kCa

ble

230V

5A

Fuse

dSu

pply

Whi

teCa

ble

SLN

EFl

owSw

itch

Stor

eTh

erm

istor

Flow

Ther

mist

or

Blac

k sh

roud

indi

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owTh

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istor

Link

Link

Link

L


Link

Fig

ure

5-6

bel

ow

rep

lace

s Fi

gur

e 8-

1 in

the

Co

mb

i bo

iler

Inst

alla

tion

Inst

ruct

ions

.

NO

TE!


Fig

ure

5-7:

Vor

texB

lue

Ext

erna

l Com

bi c

ontro

l pan

el w

iring

dia

gram

12

3E

NL

45

6E

NL

78

9E

NL

1011

12E

NL

1820

2122

1516

1314

2526

2324

1719

2728

CH PUMP EARTH

CH PUMP NEUTRAL

CH PUMP LIVE

DHW PUMP EARTH

DHW PUMP NEUTRAL

DHW PUMP LIVE

BURNER EARTH

BURNER NEUTRAL

BURNER LIVE

FLOW SWITCH

FLOW SWITCH

DHW TIMED ON

CH TIMED ON

TIMER NEUTRAL

TIMER LIVE

EXT. FROST STAT

EXT. FROST STAT

ROOM STAT

ROOM STAT



MAI

NS

1A

2A

4B

5B

Boile

rO

n/O

ff

2

C

Lim

itTh

erm

osta

tEa

rth c

onne

ctio

nbo

iler t

op b

rack

et

Prin

ted

Circ

uit B

oard

FUSE

5 X

20

EN

LE

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CH Pum

pDH

WPu

mp

NL

Blac

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Switc

hed

live

CH

Whi

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SLN

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Flow

Ther

mist

or

Blac

k sh

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indi

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owTh

erm

istor

Link

L

Serv

ice

Switc

h


Link

Link

Link

YORG/YBLRD

Switc

hed

live

DHW

~23

0V 5

A fu

sed

supp

ly

Fig

ure

5-7

bel

ow

rep

lace

s Fi

gur

e 8-

1 in

the

Ex

tern

al C

om

bi b

oile

r In

stal

latio

n In

stru

ctio

ns.

NO

TE!

Section 6: Commissioning

6.1 GeneralTo commission the boiler and burner follow the procedure given in the Section 10 of the Vortex (or Vortex Combi ) Installation Instructions supplied with the boiler.

6.2 Ignition Electrode SettingBefore first firing the boiler ensure that the burner ignition electrodes are correctly set.

The ignition electrode details given in Figure 6-1 below replaces that given in the Installation Instructions supplied with the boiler.

NOTE!

Figure 6-1: Riello RDB BLU ignition electrode setting

± 0 . 56 3

± 0 . 55

6 Commissioning

6.3 Air Damper AdjustmentUse a 3mm Allen key to adjust the air damper. Refer to Figure 6-2.

Figure 6-2: Air damper adjustment

6.4 Air Adjuster Disc – 15-21 models onlyIf the 15-21 boiler is to be down-rated to the minimum output of 15kW, an air adjuster disc (Grant UK product code: RBS215) must be fitted as described below.

This disc is NOT supplied with the boiler but is available free-of-charge by contacting Grant UK.

To fit and position the air adjuster disc, proceed as follows:

1. Ensure the boiler is isolated from the electrical supply.

2. Remove the burner from the boiler.

3. Undo the two screws (1) and remove the air damper assembly from the side of the burner.

4. Remove the screw (2) from the centre of where the air adjuster disc will be fitted.

5. Position the disc such that the disc setting ‘B’ (corresponding to 15kW output setting – refer to Section 3.3) is located against the cast boss on the fan housing.

6. Replace the screw in the centre of the air adjuster disc and tighten.

7. Re-fit the air damper assembly to the side of the burner and re-assemble in reverse order.

Air adjuster disc

Air damper assembly

12Figure 6-3: Fitting the air adjuster disc

Section 7: Servicing

7.1 GeneralTo service the boiler and burner follow the procedure given in the Section 11 of the Vortex boiler (or Vortex Combi boiler) Installation Instructions supplied with the boiler.

7 Servicing

Section 8: Burner

8.1 General

The burner and flange are matched.

If the burner is changed, the correct flange for the replacement burner MUST be fit ted.

Refer to Section 10 (spare parts).

! WARNING

All Grant VortexBlue boilers are fitted with a Riello RDB BLU blue flame burner. This has been designed to operate with reduced NOx emissions that meet the forthcoming European Ecodesign emissions regulations.

From September 2018 the maximum permissible NOx level for oil fired boilers is 120mg/kWh. All Grant VortexBlue boilers, fitted with the Riello RDB BLU burner, will operate well below this minimum level and thus fully comply with these emissions regulations when they come into effect.

8.2 Burner FeaturesThe Riello RDB BLU blue flame burner fitted to the Grant VortexBlue boilers is very similar to the Riello RDB 'yellow flame' burners, such as those fitted to the Vortex range of oil fired boilers.

The main dif ferences with the blue flame burner are as follows:• An Ultra Violet (UV) sensor is used – the blue flame cannot be

detected by the usual photocell.• A digital control box is used – the UV cell cannot be used with

the usual 'analogue' control box.• A clear reset button (on the control box) with burner status and

fault identification by dif ferent coloured indicator lights.• A longer combustion head – to allow the necessary

recirculation of the combustion gases.• A post purge following flame shut off – requiring a permanent

live to the burner in addition to the usual switched live.

8 Burner

3 9

5

6

10

4

1

7

8

2

Figure 8-1: Burner components

Table 8-2: Burner components key

Key Description

1 Oil pump

2 Digital control box

3 Reset push-button with lockout lamp

4 Flange with insulating gasket

5 Air damper adjustment screw

6 Snorkel (balanced flue)

7 Pump pressure adjustment screw

8 Pressure gauge port

9 UV sensor

10 Combustion head

Section 8: Burner

8.3 Digital Control BoxThe digital control box fitted to this burner has several dif ferent features compared to the more commonly used 'analogue' control box.

8.3.1 Reset Push-buttonThis is a clear (transparent) button that will indicate the operating status of the burner and also burner faults depending on the colour of the indicator LED visible through the reset button.

If there is no heat demand to fire the burner, the indicator LED will be off, i.e. no colour visible though the reset push button.

Refer to Figure 8-1 for the location of the control box and reset push-button.

If the reset push-button LED is indicating a lockout (refer to Section 8.3.3), press the reset button to attempt to re-start the burner. If the burner then operates correctly the lockout may have been caused by a temporary fault that has now cleared. If the lockout persists the cause of the fault should be diagnosed and rectified.

To operate the reset push-button it must be pressed in and briefly held (for at least one second) before releasing.

NOTE!

The burner can only be reset 5 times consecutively, af ter which the mains power supply has to be switched off and then back on for a further 5 reset attempts to be available.

NOTE!

8.3.2 Operating Status IndicationFrom start up the operating status of the burner is displayed via the reset push-button indicator LED on the control box. Refer to Table 8-3.

8.3.3 Burner Fault IndicationWhenever a burner lockout occurs the cause is displayed via the reset push-button indicator LED on the control box. Refer to Table 8-4.

8.3.4 Last Lockout DisplayThe control box memorises the details of the last lockout that occurred and this information can be recalled and displayed by the reset push-button indicator LED.

To operate this function:• Press and hold the reset push-button for 25 seconds• During this time the reset push button indicator LED will first

flash RED (twice) and then flash GREEN (once) and then GREEN again (three times)

• As soon as it flashes GREEN four times release the reset push-button immediately

• The reset push-button indicator LED will then display the last lockout indication, e.g. constant red.

• Refer to the Fault Diagnostics table (Table 9-2) in Section 9 of these Supplementary Instructions to identify the fault from the indicator LED sequence.

The lockout fault will only be displayed for a period of 10 seconds. If required, this period can be extended by re-pressing the reset push-button during the display of the lockout. The lockout display will then be extended by a further 10 seconds.

Table 8-3: Burner operating status indicator

Status Reset push-button colour Seconds Notes

OFF OFF - -

Pre-purge ORANGE blinking 0.5 0.5

Safety time GREEN blinking 0.5 0.5

Normal operating position GREEN - - Steady ON

Table 8-4: Burner operating status indicator

Status Reset push-button colour Seconds Notes

Extraneous light (false flame signal) GREEN, RED blinking alternately 0.5 0.5

Frequency supply error ORANGE - - Steady ON

Voltage monitor error ORANGE, GREEN fast blinking alternately 0.2 0.2

Reset push-button / remote reset anomaly GREEN, RED fast blinking alternately 0.2 0.2

Lockout for no flame after safety time RED - - Steady ONGo to box A*

Lockout for false flame signal RED blinking 0.5 0.5 Go to box B*

Lockout for maximum number of re-cycles RED fast blinking 0.2 0.2 Go to box C*

Lockout for fan motor error RED, ORANGE blinking inverted 2.5 0.5 Go to box D*

Lockout for oil valve error RED, GREEN blinking inverted 2.5 0.5 Go to box E*

Lockout for eeprom error ORANGE, GREEN blinking alternately 0.5 0.5 Go to box F*

* Refer to the fault finding chart - Section 9.3.

Section 8: Burner

8.3.5 Removal of Control Box

Before removing the control box from the burner, or opening the control box cover, isolate the electrical supply to the boiler.

! WARNING

To remove the control box proceed as follows (referring to Figure 8-5):• Unscrew and remove screw (1) and open control box cover (2).• Disconnect all plugs from the control box terminals.• Unscrew the retaining finger nut and remove the solenoid coil

(3) from the oil pump.• Unscrew and remove the two screws (4) and remove the

control box from the burner.• Disconnect the two ignition leads from the ignition connections

on rear of control box.• Refit the control box to the burner using the reverse of the

above procedure.

4

4

3

12

8.4 Burner Operation8.4.1 Burner Operating Times

Table 8-6: Burner operating times

Symbol Description Value(seconds)

t0 Standby: the burner is waiting for a heat request -

t1 Standby time for an input signal: reaction time, control box remains in waiting status for t1 ≤ 1

t2 Initialisation standby time: check time following the main power start-up 3.5

t2l Checks extraneous light during t2: waiting mode for t2l, then lockout: the motor does not start 25

t3 Pre-purge time: the fan motor is working 15

t3l Checks extraneous light during pre-purging: control box goes into lockout at the end of t3l 25

t3i Spark pre-ignition time 2

ts Safety time 5

t4i Total spark ignition time 10

t4l Reaction time to achieve safety shut-down due to flame failure ≤ 1

t5i Spark post-ignition time 3

tr

Re-cycles: Max. no. 3 repetitions of complete start-up sequence if there is a flame failure

duringoperation; the final action at the last attempt fol-

lowing flame failure is a lock-out

3 re-cycles

tppPost-purge time: additional purge time at the end

of a heat request. Can be interrupted by a newheat request

60

8.4.2 Presence of Extraneous light or FlameOn burner start up, when the fan starts to pre-purge the burner/boiler, if an extraneous light or flame is detected in the combustion chamber by the UV sensor the burner fan continues to run until either:a) The extraneous light or flame disappears, orb) 25 seconds elapses, a burner lockout occurs and the fault

indicator LED flashes Green/Red

If an extraneous light or flame is detected after the fan has started (i.e. at some time during the pre-purge period) the pre-purge time of 15 seconds is reset, and the 25 second time for checking for the presence of extraneous light or flame starts and the fan continues to run.

As above, if the extraneous light or flame does not disappear after 25 seconds a burner lockout occurs. This function is cumulative and can operate a maximum of two times during the burner pre-purge period.

If the extraneous light or flame disappears after 24 seconds (or less) the pre-purge period and the 25 second countdown for checking for extraneous light or flame re-starts. If the extraneous light or flame re-appears the process is repeated. If the extraneous light or flame appears for a third time, the burner goes into lockout.

If during a burner recycle operation due to Flame failure (refer to Section 8.4.4 – Burner Recycle Function) an extraneous light or flame is detected, the 25 second countdown starts for checking for extraneous light or flame.

The presence of extraneous light or flame can also be detected when the burner is in:c) The standby condition waiting for a heating demand to start the

burner.d) The Initialisation period (t2) after the heating demand but

before the burner fan starts.

Figure 8-5: Removal of control box

Section 8: Burner

8.4.3 Spark Ignition DurationThe 'pre-ignition' spark time starts 2 seconds before the oil valve opens (the start of the 5 second 'safety time' period).

The 'post-ignition' spark time ends 3 seconds after the end of the safety time period, i.e. 8 seconds after the oil valve opens.

The ignition spark is present throughout the 'safety time' period (5 seconds) making a total spark ignition period of 10 seconds.

In the case of continuous ignition sequence recycling af ter flame failure, or heat demands close to one another, the maximum number of cycle repetitions of the ignition transformer is one attempt every minute.

NOTE!

8.4.4 Burner Recycle FunctionIn event of flame failure during burner operation the control box will allow the burner to recycle and repeat the start-up sequence for the burner to attempt to re-fire. This can occur up to a total of three attempts to re-fire the burner. If it fails a fourth time in operation it will cause a burner lockout and the reset push-button indicator LED will be RED.

After 8½ minutes of continuous burner operation the control box regains one attempt to re-fire (should it be required).

If the power supply to the boiler is disconnected and then reconnected, when the next heat demand is applied to the burner all three possible attempts to re-fire are restored.

NOTE!

8.4.5 Burner LockoutIn the event of a burner lockout:If the reset button is pressed four times in succession, without the burner being restarted, pressing the reset a fif th time will 'lock' the reset button. The reset button will flash red and will not respond to being pressed, i.e. it will no longer operate to attempt to restart the burner. This is intended to stop the burner reset from being repeatedly pressed and does not necessarily indicate a fault with the control box.If this condition occurs, switch the boiler ON/OFF switch (located on the boiler control panel) to OFF. Wait for 5 seconds and then switch it back to ON. The burner reset button should now function as expected.Before continuing to press the reset button, the cause of the original burner lockout, e.g. lack of fuel, no ignition, etc. must be identified and rectified.

8.4.6 Post Purge FunctionThis function allows air flow through the burner for a pre-set time after the burner flame is switched off (on the loss of demand for the burner to fire).

The loss of demand from either the heating system controls, or boiler temperature control, interrupts the switched live to the burner resulting in the fuel supply being shut off and the flame stopped. The permanent supply to the burner maintains the fan operation for a short period to provide the post purging of the burner and boiler prior to the burner re-firing again.

The post-purge function does not operate:e) After a burner lockout has occurredf) If the heat demand is interrupted during the pre-purge period

However, the post-purge function will operate if the heat demand is interrupted:g) During the safety time period (i.e. immediately after burner

ignition)h) During normal operation of the burner

If the UV cell detects any extraneous light or flame during the pre-purge period the burner will go to 'lockout' after 25 seconds.

If there is a new heat demand during the post-purge period, the post-purge function is halted (the fan stops) and a new burner operating cycle starts.

Section 9: Fault Finding

9.1 Burner Fault IndicationWhenever a burner lockout occurs the cause is displayed via the reset push button indicator LED on the control box. The colour, sequence and speed of the indicator LED flashes identify the specific lockout type and the possible causes are listed in Table 9-1.

Table 9-1: Burner fault indication

Lockout description Lockout time LED colour Probable cause

Presence of extraneous light during standby After 25 seconds RED

blinking•Presenceofafalseflamesignalbeforetheheatrequest

Presence of extraneous light detected during pre-purging After 25 seconds RED

blinking •Presenceoffalseflamesignalduringpre-purging

Extraneous light detected during post-purging After 25 seconds RED

blinking

•Presenceoffalseflamesignalduringpost-purging(or pre-heating if the short-circuit socket is not connected

The flame is not detected after the safety time After 5 seconds from oil-valve starts RED

steady ON

•UVsensordefectiveordirty•Oilvalvedefectiveordirty•Faultyignitiontransformer•Badlyregulatedburner•Oilfuelnotpresent

Flame failure during operation After 3 recycles REDblinking

•Badlyadjustedburner•Oilvalvedefectiveordirty•UVsensordefectiveordirty

Fan motor error Immediate (during pre-purge) RED, ORANGEblinking inverted

•Faultyfanmotor•Fanmotornotconnected

Malfunction in the internal control circuit that drives the oil valve Immediate (during pre-purge) RED, GREEN

blinking inverted•Faultyoilvalve•Internalcontrolcircuitthatdrivestheoilvalvefaulty

Eeprom error Immediate (during pre-purge) ORANGE, GREENblinking inverted •Faultyinternalmemory

9.2 Burner Fault Diagnostics

Table 9-2: Burner faults

Faults Possible cause Fault diagnostics Solutions

The burner does not start when there is heat demand

Lack of electrical supply OFF

Check presence of voltage in the L - N the pin plug

Check the conditions of the fuses.

Check that safety thermostat is not in lockout

The UV sensor sees an extraneous light

GREEN, RED blinking Eliminate the extraneous light.

The connections in the control box are wrongly inserted OFF Check and connect all the plugs and sockets

properly.

The burner goes into lockout mode before or during the pre-purging The UV sensor sees extraneous light RED blinking Eliminate the extraneous light.

Burner runs normally in the pre-purge and ignition cycle and locks out after

about 5 seconds

The UV sensor is dirty

RED steady ON

Clear it

The UV sensor is faulty Replace it

Flame moves away or fails

Check pressure and output of the fuel

Check air output

Change nozzle

Check the coil of solenoid valve

Burner starts with an ignition delay

The ignition electrodes are wrongly positioned

GREEN blinking

Adjust them according to the instructions of this manual

Air output is too high Set the air output according to the instructions of this manual

Nozzle dirty or worn Replace it

9 Fault Finding

Section 9: Fault Finding

9.3 Riello RDB BLU Fault Finding Chart

Fig

ure

9-3:

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llo R

DB

BLU

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Section 10: Spare Parts

10.1 Riello RDB BLU Burner Parts List

Key Description

Internal 21, Internal

System 21, External 21

andCombi 21


System 26 and

Combi 26


System 36 and

Combi 36

Riello product code Grant UK product code

1 Gasket - refer to item 34 ü ü ü N/A N/A

24-pin connector ü N/A N/A 20117417 RBS201

4-pin connector N/A ü ü 20117432 RBS202

3

Combustion head - BG1 ü N/A N/A 20117435 RBS203

Combustion head - BG2 N/A ü N/A 20120985 Z20120985

Combustion head - BG3+ N/A N/A ü 20133762 Z20133762

4 Ignition electrodes ü ü ü 20117455 RBS205

5 Pre-heater jumper ü ü ü 20045862 RBS206

6Nozzle holder ü ü N/A 20117459 RBS207

Nozzle holder N/A N/A ü 20117461 RBS208

7Collar (including o-rings) ü ü N/A 20117472 RBS209

Collar (including o-rings) N/A N/A ü 20117476 RBS210

8 Ignition HT lead ü ü ü 20105111 RBS211

9Air damper assembly ü N/A N/A 3008647 RBS116

Air damper assembly N/A ü ü 3008839 RBS166

10 Fan ü ü ü 3005788 RBS151

11 UV sensor ü ü ü 20095126 RBS212

12 Capacitor 4.5 μF ü ü ü 20071576 RBS149A

13 Solenoid valve ü ü ü 3007871 RBS213

14 Pump pressure regulator ü ü ü 20032135 RBS214

15 Air adjuster disc ü N/A N/A 20094349 RBS215

16 Oil pump ü ü ü 20030953 RBS101

17 O-ring (pump filter) - 10 pack ü ü ü 3007175 RBS216

18 Pump filter and o-ring ü ü ü 3020436 RBS217

19 Oil hose connector - 3/8 x 1/4 ü ü ü 3009068 RBS218

20 Flexible oil hose ü ü ü 3007621 RBS219

21 Oil pipe ü ü ü 20117488 RBS220

22 Pressure gauge connector ü ü ü 3008876 RBS138

23 Oil pump drive coupling - 10 pack ü ü ü 3000443 RBS16

24 Solenoid coil ü ü ü 3008648 RBS117

25 Motor and capacitor 4.5 μF ü ü ü 20071577 RBS102A

26 Control box cover ü ü ü 20094351 RBS221

27 Control box ü ü ü 20117694 RBS222

28 Solenoid coil lead ü ü ü 3008682 RBS223

29 Cover ü ü ü 20117497 RBS224

30 O-ring kit ü ü ü 3008878 RBS140

31 Front shield ü ü ü 3020306 RBS225

32 Air intake - balanced flue ü ü ü 3020281 RBS226

33 Air baffle ü ü N/A 20117504 RBS227

33 Air baffle N/A N/A ü 20117506 RBS228

34 Flange and gasket* ü ü ü 20116712 Z20116712

35 Air intake - conventional flue ü ü ü 20012046 RBS230

* The flange and gasket are supplied as a combined pack.

10 Spare Parts

Section 10: Spare Parts

Fig

ure

10-1

: Exp

lode

d vi

ew o

f Rie

llo R

DB

BLU

bur

ner

10.2 Exploded View of Riello RDB BLU Burner

2

134

3

4

8

7

30

3310

30

15

32

9

6

31

26

23

2512

24

2216

11

2129

20 19

5 27

28

1413

18

17

35

16

Grant EnGinEErinG (UK) LimitEdHopton House, Hopton Industrial Estate, Devizes, Wiltshire, SN10 2EU

Tel: +44 (0)1380 736920 Fax: +44 (0)1380 736991Email: [email protected] www.grantuk.com

Grant UK VortexBlue · operation of the Grant VortexBlue range of high efficiency oil fired ......

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