Part No. DOC 37 Rev. 12 September 2006 USER, INSTALLATION

USER, INSTALLATIONand

SERVICING INSTRUCTIONS

GRANT VORTEX

Condensing Oil Boiler range

For use with Kerosene only

Part No. DOC 37 Rev. 12 September 2006

Kitchen, Kitchen System,

Utility and Utility System Models

with outputs up to 70 kW

Utility model

Kitchen model

This appliance is deemed a controlled service and specific regional statutory requirementsmay be applicable

After installing the boiler leave these instructions with the User

2 Grant Vortex Oil Boilers

Subject PageSection

1 Introduction .............................................. 3

2 User instructions ...................................... 4

3 Boiler technical information .................... 7

4 General boiler information ....................... 11

5 Boiler installation ..................................... 28

6 Commissioning ......................................... 34

7 Information for the user ........................... 36

8 Boiler servicing ........................................ 36

9 Wiring diagrams ....................................... 40

10 Fault finding ............................................. 43

11 Burner spares ........................................... 45

12 Health and safety information .................. 47

13 EC declaration of conformity .................. 48

Date: ..............................

Commissioning engineer: .............................................................................. Tel. No: ....................................

Boiler model/output: ........................................ kW Fuel type: Kerosene

Nozzle size: .................................... Pump pressure: .................... Air setting: ...........................

Flue gas % CO2: ............................. Net flue gas temp: ................ Smoke No: ...........................

It is recommended that the boiler should be regularly serviced, at least once a year, and the details entered in the BoilerHandbook by the service engineer.

COMMISSIONING REPORT

SERVICE LOG

LIST OF CONTENTS

3Grant Vortex Oil Boilers

During the combustion process, hydrogen and oxygencombine to produce heat and water vapour. The watervapour produced is in the form of superheated steam inthe heat exchanger. This superheated steam containssensible heat (available heat) and latent heat (heatlocked up in the flue gas). A conventional boilercannot recover any of the latent heat and this energy islost to the atmosphere through the flue.

The Grant Vortex condensing boiler contains an extraheat exchanger which is designed to recover the latentheat normally lost by a conventional boiler. It does thisby cooling the flue gases to below 90° C, thusextracting more sensible heat and some of the latentheat. This is achieved by cooling the flue gases to theirdew point (approximately 55° C).

To ensure maximum efficiency, the boiler returntemperature should be 55° C or less, this will enablethe latent heat to be condensed out of the flue gases.The boiler will achieve nett thermal efficiencies of100%.

To achieve maximum performance from the GrantVortex boiler, it is recommended that the heatingsystem is designed so that a temperature differential of20° C between the flow and return is maintained. Theuse of modulating circulating pumps (now widelyavailable) and effective control systems should beconsidered.

The Grant Vortex boiler will however still operate atextremely high efficiencies even when it is not incondensing mode and therefore is suitable for fitting toan existing heating system without alteration to theradiator sizes. The boiler is capable of a maximumflow temperature of 75° C.

How a condensing boiler works1.1 Heating system design considerations1.2

To achieve the maximum efficiencies possible fromthe Grant Vortex boiler, the heating system should bedesigned to the following parameters:

Radiators:-

Flow temperature 70° C

Return temperature 50° C

Differential 20° C

Underfloor:-

Flow temperature 50° C

Return temperature 40° C

Differential 10° C

1 Size radiators with a mean water temperature of60° C.

2 Design system controls with programmable roomthermostats or use weather compensating controlsto maintain return temperatures below 55° C.

The boiler should not be allowed to operate withreturn temperatures of less than 40° C when thesystem is up to operating temperature.

3 The use of a pipe stat is recommended to controlthe return temperature when using weathercompensating controls.

1 - INTRODUCTION


2 - USER INSTRUCTIONS

The boiler will provide domestic hot water and centralheating and is fully automatic once switched on. Kitchenmodels have a 'mains on' neon, see Fig. A, which lightswhen the boiler is switched on, but does not necessarilyindicate the burner is firing.

If your model has a programmer fitted, it will providehot water and central heating during the periods set onthe programmer.

Kitchen and Kitchen System: To access the controls,open the front door from the right (may be altered toopen from the left if required).

Utility and Utility System: Pull off the front accesspanel.

Fig. A Boiler controls (Kitchen model shown)

About your boiler2.1

Boiler controls (see Fig. A)2.2

1 Ensure that - There is sufficient fuel, of the correcttype, in the supply tank and all fuel supply valves areopen. The water supply is on. The electricity supplyto the boiler is off. The boiler On/Off switch is set toOFF. The room thermostat (if fitted) is at the desiredsetting. The boiler thermostat is set to the requiredsetting (see Section 2.7).

2 Switch on the electricity supply to the boiler.

3 Set the On/Off switch to ON and, if fitted, theprogrammer (CH or HW) to ON.

The boiler will now light automatically.

4 If you have a programmer fitted in the control panel,refer to the instructions supplied with the programmerand set the programmer. Set the HW and CH functionsto TIMED. The boiler will now operate during the 'on'periods set on the programmer.

Lighting your boiler (see Fig. A)2.3


For short periods - Set the On/Off to OFF.To restart, simply set the switch to ON.

For long periods: Set the On/Off switch to OFF andswitch off the electricity supply to the boiler. Ifrequired, the fuel supply valve may be closed and thewater and electricity supplies turned off at the mains.

To restart, refer to the full lighting instructions givenin Section 2.3.

1 Check that the boiler On/Off switch is ON.

2 Check that the programmer (if fitted) is workingand is in an 'on' period.

3 Check that all thermostats are set to the desiredsetting and are calling for heat.

4 Check if the burner 'Lock-out' reset button (on theburner) is lit. If it is, press it to start the burner. Ifthe burner fails to light and goes to 'Lock-out'again, check that you have sufficient fuel in thestorage tank and that the fuel supply valve is open.Check that the fire valve in the oil supply line has nottripped

5 Ensure that a fuse has not blown or that theelectricity supply has not failed.

6 Check to see if the safety thermostat has operated(see Section 2.7).

If the burner still fails to light after carrying out thesechecks then a fault exists. Switch off the electricitysupply to the boiler and contact your Service engineer.

Grant Vortex boilers only operate on Class C2 Keroseneto BS 2869:1998.

You should always quote this type of fuel when orderingfrom your supplier.

Do not wait until the fuel runs out before you ordersome more. Sludge in the bottom of the tank may bedrawn into the fuel lines. If it is possible, switch off theboiler when the new supply is delivered and leave thefuel to settle for an hour before restarting the boiler.


1 Boiler thermostat - This control allows thetemperature of the water leaving the boiler to heatthe radiators and domestic hot water to be adjusted.

Note: If you have a cylinder thermostat on your hotwater cylinder, this will control the temperature ofyour domestic hot water. The boiler thermostatsetting must be equal to or above the cylinderthermostat setting to enable the cylinder thermostatto control the domestic hot water system.

2 Burner Lock-out reset button - If there is aburner malfunction, a built-in safety circuitswitches the burner off and the 'Lock-out' resetbutton (on the burner) will light. On Kitchenmodels a neon on the control panel also indicates aburner lock-out (see Fig. A). Usually suchmalfunctions are short lived and pressing the resetbutton will restore normal operation.

If the burner continually goes to 'Lock-out' a faultexists or the fuel supply is low. If you have sufficientfuel, you will need to call your Service engineer.

3 Safety thermostat - Your boiler is fitted with a safetyoverheat thermostat which will automatically switchoff the boiler in the case of a control malfunctioncausing overheating. On Kitchen models a neon onthe control panel will illuminate to indicate the overheatthermostat has operated (see Fig. A).

If your boiler goes off and you try to light it butnothing happens and the 'Lock-out' reset button on theburner (or the neon on the control panel) are not lit,the overheat thermostat has probably operated. Theboiler will not light until the thermostat is reset. Toreset, unscrew the small plastic cap (see Fig. A), pressthe button then replace the cap.

If this condition continually repeats, contact yourService engineer.

4 Programmer (if fitted) - Refer to the instructionssupplied with the Programmer.

5 Ventilation - Always ensure that the boiler hasadequate ventilation. Any ventilation openingsprovided by the Installer must not be obstructed.Periodically check that they are clear.

Do not attempt to 'box in' the boiler or build acompartment around it before consulting yourInstaller.

Do not place any combustible material around oron the boiler or flue pipe.

Turning off your boiler (see Fig. A)2.4

Points to check if burner fails to light2.5

About your fuel2.6

General notes and care of your system2.7


6 Flue terminal - The flue terminal on the outsidewall must not be obstructed or damaged.

In severe conditions check that the terminal doesnot become blocked by snow.

7 Frost protection - Your Installer may have fitted afrost thermostat. If not, and you are likely to beaway for a short time, leave the boiler on with theboiler thermostat set at a low setting. For longerperiods the boiler and system should be drained.Contact your Service engineer for draining andfilling the system.

8 Cleaning and servicing - Lightly wipe over thecase with a damp cloth and a little detergent. Donot use abrasive pads or cleaners.

You must have your boiler serviced at least once ayear to ensure safe and efficient operation. Contactyour Service engineer for further details.

9 Failure of electricity supply - If the electricitysupply fails, the boiler will not operate. It shouldrelight automatically when the supply is restored.

If a programmer is fitted it will retain the timesettings for up to 24 hours and will not have to bereset to the correct time of day when the supply isrestored (the display remains for up to 1 hour, butwill re-appear when the supply is restored).

The boiler requires a 230/240 V ~ 50 Hz supply. Itmust be protected by a 5 Amp fuse.

Warning: This appliance must be earthed.

If your boiler is operating on a sealed heating system,the installer will have pressurised the system andshould have told you (or set it on the pressure gauge)the system pressure when cold (this is normallybetween 0.5 and 1.0 bar, which will increase slightlywhen hot). If the pressure (when cold) is below the setpressure mentioned above, you can re-pressurise thesystem. If the system requires frequent re-pressurising,ask your Installer or Service engineer to check theheating system for leaks and to check the expansionvessel air charge.


The boiler or system will be fitted with an automatic airvent to remove air from the system. Any air trapped in theradiators should be removed by venting the radiatorsusing the vent screw at the top of each radiator. Only venta radiator if the top is cool and the bottom is hot.Excessive venting will reduce the system pressure, soonly vent when necessary and check the system pressureas mentioned above. Re-pressurise the system if necessary.

The boiler or system may be fitted with a safety valveto release excess pressure from the system. If water orsteam is emitted from the end of the safety valvedischarge pipe, switch off the boiler and contact yourInstaller or Service engineer.

The expansion vessel air charge must be checkedannually. Failure to maintain an adequate aircharge in the vessel may invalidate the warranty.

To re-pressurise the system by adding water:

1 Only add water to the system when it is cold andthe boiler is off. Do not overfill.

2 Ensure the flexible filling loop (see Fig. B) isconnected and that the shut off valve connecting itto the boiler is open and the double check valve atthe front is closed.A valve is open when the operating lever is in line withthe valve, and closed when it is at right angles to it.

3 Gradually open the double check valve on the frontof the filling loop until water is heard to flow.When the black needle of the pressure gauge isbetween 0.5 and 1 bar, close the valve.

4 Vent each radiator in turn, starting with the lowestone in the system, to remove air.

5 Continue to fill the system until the pressure gaugeindicates between 0.5 and 1.0 bar. Close the fillpoint valve.

6 Repeat steps 4 and 5 as required.

7 Close the valves either side of the filling loop anddisconnect the loop.

Electricity supply2.8

Sealed central heating system2.9

Sealed system filling loop arrangement - Fig. B


22 mm (only connect plastic pipe)

28 m

1m

65 to 80° C

111° C ± 3° C

Less than 50° C

230/240 V ~ 50 Hz Fused at 5 Amp

¼" BSP Male (on end of flexible fuel line)

Minimum flue draught - 8.7 N/m² (0.035 in wg)

Maximum flue draught - 37 N/m² (0.15 in wg)

2.5 bar

2.5 bar

Boiler technical data3.1

3- BOILER TECHNICAL INFORMATION

Model

Water content litre

gal

* Weight (dry) kg

lb

Max. heat output kW

(kerosene) Btu/h

Flow connection

Return connection

Min. flow rate (ΔT=10°C) l/h

Min. flow rate (ΔT=20°C) l/h

Condensate connection

Flue diameter (conventional)

Waterside resistance

Flow/Return temp. diff. of 10°C

Flow/Return temp. diff. of 20°C

Maximum static head

Minimum circulating head

Boiler thermostat range

Limit (safety) stat shut off temp

Max. hearth temperature

Electricity supply

Motor power Watts

Starting current Amps

Running current Amps

Oil connection

Conventional flue

Max operating press - sealed sys

Max operating press - open sys

* Weight includes burner but excludes flue.** 125 mm diameter required for flexible flue liner (Orange system). For rigid flue system (e.g. Green system) 100 mm

diameter flue required. Refer to Sections 4.1 and 4.7 for further details.

Kitchen System Utility Utility System

IMPORTANT: On all models except 46/58 and 58/70 Return connections are stainless steel pipe (see above for size).Compression fitting MUST be used. Brass push-fit connectors are not suitable for use on stainless steel pipe.

Kitchen

90

2.6

0.85

90

4.2

0.85

90

2.6

0.85

150

6.4

1.2

15/26

19

4.2

119

262

26

88 700

22 mm

22 mm

2 200

1 100

15/26

19

4.2

127

280

26

88 700

22 mm

22 mm

2 200

1 100

15/26

19

4.2

112

246

26

88 700

22 mm

22 mm

2 200

1 100

26/36

21

4.7

134

295

36

122 840

28 mm

28 mm

3 000

1 500

36/46

21

4.7

134

295

46

157 000

28 mm

28 mm

4 000

2 000

46/58

50

11

295

649

58

197 896

1¼" BSP

1¼" BSP

5 200

2 600

58/70

50

11

299

658

70

238 840

1¼" BSP

1¼" BSP

6 000

3 000

90

4.2

0.85

26.0 mbar

9.5 mbar

28.5 mbar

10.0 mbar

100 mm (4 in) 100 mm (4 in)

26.0 mbar

9.5 mbar

125 mm (5 in)**

15/26

19

4.2

126.5

278

26

88 700

22 mm

22 mm

2 200

1 100

28.5mbar

10.0mbar

26/36

21

4.7

142

312

36

122 840

28 mm

28 mm

3 000

1 500

36/46

21

4.7

142

312

46

157 000

28 mm

28 mm

4 000

2 000


Notes:1 The data given above is approximate only and is based on the boiler being used with a low level balanced flue.2 The above settings may have to be adjusted on site for the correct operation of the burner.3 Gas Oil is not suitable for use with the Grant Vortex boiler range.4 When commissioning the air damper must be adjusted to obtain the correct CO

2 level.

5 * Factory settings.6 The combustion door test point may be used for CO

2 and smoke readings only. Do not use this test point for temperature

or efficiency readings.

Flue gas analysisTo allow the boiler to be commissioned and serviced, the boiler is supplied with a combustion test point on the frontcleaning door. When this test point is used please note the following:1. The test point is for CO

2 and smoke readings only.

2. The boiler efficiency and temperature must be taken from the flue test point on high level, vertical and conventionalflue adaptors.

3. Concentric low level flues do not contain a test point. The temperature and efficiency readings must be taken from theflue terminal.

3 - BOILER TECHNICAL INFORMATION

Note: Grant Vortex boilers are only for use with kerosene.

Grant Vortex oil boilers using Class C2 kerosene3.3

(kW)

15.0

20.0

23.0

26.0

26.0

31.5

36.0

36.0

41.5

46.0

46.0

52.0

58.0

58.0

64.0

70.0

(Btu/h)

51 180

68 240

78 475

88 700

88 700

107 500

123 000

123 000

142 000

157 000

156 952

177 424

197 896

197 896

218 368

238 840

Nozzle

0.50/80°EH

0.60/80°EH

0.65/80°EH

0.75/80°EH

0.75/80°EH

0.85/80°EH

1.00/80°EH

1.00/80°EH

1.20/80°S

1.25/80°S

1.25/80°S

1.35/80°S

1.65/80°S

1.65/80°S

1.65/80°S

1.75/80°S

Oilpress.(bar)

7.0

8.0

8.5

8.0

8.0

9.0

9.1

9.0

8.0

8.0

8.0

9.5

8.0

8.0

9.5

9.5

SmokeNo.

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

0 - 1

Fuel flowrate

(kg/h)

1.25

1.67

1.94

2.16

2.18

2.57

3.01

3.01

3.56

3.90

4.01

4.47

5.05

5.05

5.58

6.01

Flue gastemp.(° C)

60 - 65

65 - 70

70 - 75

75 - 80

65 - 70

70 - 75

75 - 80

75 - 80

80 - 85

85 - 90

75 - 80

75 - 80

75 - 80

75 - 80

75 - 80

75 - 80

CO2

(%)

12.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

12.0

Burnerhead type

T1

T1

T2

T2

T3

T3

T3

T5

T5

T5

GIB

GIB

GIB

GIB

GIB

GIB

Heat Output

15/26

Riello RDB1

26/36

Riello RDB2

36/46

Riello RDB2.2

46/58

Riello RDB3.2

58/70

Riello RDB3.2

Model andburner type

*

*

Sealed system data - System models (not 46/58 and 58/70)3.2

*

Heating system pressure (cold)

Operating pressure of pressure relief valve

Expansion vessel size (15/26)



Max heating system volume (including boiler) (15/26)*



Cold water mains connection

Pressure relief valve discharge connection

Maximum 1.0 bar, Minimum 0.5 bar

2.5 bar

10 litres (pre-charged at 1 bar)



106 litres (approximately)



15 mm copper pipe

15 mm copper pipe

* Based on vessel charge and system cold fill pressure of 0.5 bar

*

*

SEDBUKefficiency

(%)

95.0

97.0

92.6

94.1

93.6

Burnerhead setting

Fixed

Fixed

Fixed

Fixed

Fixed

Fixed

Fixed

Fixed

Fixed

Fixed

0

0

0

0

0

4


FRONT VIEW

470

86

0LEFT SIDE VIEW

81

37

59

70

9

48

758

7

35

2

18

17

110

30Flue centre line

RIGHT SIDE VIEW

63

1

59

PLAN VIEW

470

60

3110

22mm condensate drain

Safety valveCold fillFlow - 22mm push-fit

22mm stainlessreturn

170

Fluespigot


Boiler dimensions3.4

Fig 1a - Kitchen and Kitchen System 15/26 dimensions

Fig. 1b - Utility and Utility System 15/26 dimensions



Fig. 1c - Utility and Utility System 26/36 and 36/46 dimensions

Fig. 1d - Utility 46/58 and 58/70 dimensions

Safety valveFlow - 28mm push-fitCold fill

61170

61

LEFT SIDE VIEW455

55

5

59

9

311

24

115

63 63Flue centre line

RIGHT SIDE VIEW

PLAN VIEW

470

603

150


FRONT VIEW

470

900

28mm stainlessreturn

205

Fluespigot

170

LEFT SIDE VIEW731

83

1

10

24 25

30

44 Dia.

44 Dia.

109

250

Flue centre line

RIGHT SIDE VIEW

PLAN VIEW

563

78

61

09


FRONT VIEW

563

12

34

225

Fluespigot

Note: Cover plate oneach side slidesforwards to provideopening for pipes.


4 - GENERAL BOILER INFORMATION

Boiler description4.1 Green system ...... Standard external high level/vertical flue starter kit (room sealed) - componentsavailable:

External high level/vertical flue starter kit short(room sealed)Extensions 150 mm, 250 mm, 450 mm, 950 mmand adjustable 195 to 270 mm45° elbowHigh level terminalVertical terminal

White system ...... High level concentric balanced fluekit - components available:

Extensions 225 mm, 450 mm, 950 mm andadjustable 275 to 450 mm45° elbowVertical concentric balanced flue kitExtensions 225 mm, 450 mm, 950 mm andadjustable 275 to 450 mm45° elbow

All burners are pre-set for use with kerosene and aresupplied ready to connect to a single pipe fuel supplysystem with a loose flexible fuel line and 3/

8" to 1/

4" BSP

male adaptor supplied with the boiler.

If required, an additional flexible fuel line (600 mm) and3/

8" to 1/

4" BSP male adaptor are available to purchase

from Grant Engineering (UK) Limited, for two-pipe oilsupply systems, Part No. RBS104.

The temperature of the water leaving the boiler to heatthe radiators and hot water cylinder is User adjustable.

The boiler is fitted with an overheat thermostat (whichallows it to be used on a sealed central heating system) whichwill automatically switch off the boiler if the heat exchangerexceeds a pre-set temperature of 111° C ± 3° C.

The control panel is fitted with an ON/OFF switch,boiler thermostat control knob and the manual resetbutton for the overheat thermostat. An optional plug-inprogrammer is available to purchase from GrantEngineering (UK) Limited for Kitchen models whichallows the User to set the operating times for centralheating and hot water, Part No. EPKIT.

Kitchen and Kitchen System: The boiler casing door isfactory fitted with the hinges on the left hand side. Ifrequired, the door may be hinged on the right handside as follows:-Remove the hinge pin from the top of the door and thebottom hinge bracket. Refit them to the other side ofthe door and boiler casing. Adjust the bottom bracketuntil the door is correctly aligned.

Boiler components4.2

The Grant Vortex range of automatic pressure jet oilboilers have been designed for use with a fully pumpedcentral heating system with indirect domestic hot watercylinder. They are not suitable for use with either a directcylinder or a 'primatic' cylinder or gravity hot water..

The boilers are suitable for use on sealed centralheating systems. System models are supplied with thenecessary components factory fitted. See Section 4.13.

All models are supplied with the control panel andburner factory fitted.

The boilers can be connected to either a conventionalflue system or a balanced flue system, as required.

For Conventional flue applications where a chimney isto be lined - Grant recommends the use of the Grant‘Orange’ flue system, specifically designed for theVortex range of condensing boilers. Refer to Section4.7 for further details.

Where a rigid conventional flue - either internal orexternal - is required, Grant recommends the use of theGrant 'Green' and 'Orange' flue system components. Asno flue adaptor is supplied with the boiler it will benecessary to purchase the Grant CF adaptor kit inorder to correctly connect the 'Green' and 'Orangesystem flue components to the boiler.

Flue adaptor kit - Ref. CFA15/70 - is used for all Vortexmodels from 15 to 70 kW as they all can use the 100 mm'Green' and 'Orange' system components to construct aflue of maximum vertical height 8 metres.

Important: The flue system materials and constructionMUST be suitable for use with oil-fired condensingboilers. Failure to fit a suitable conventional flue mayinvalidate the warranty on the boiler.

Fitting instructions for the Low level concentric, High leveland Vertical balanced flue kits are supplied with the kits.Where a balanced flue system is required, the followingflue kits are available from Grant UK.Refer to Section 4.8 for further details.

Yellow system ..... Standard low level concentricbalanced flue - components available:

Low level concentric balanced flue shortExtensions 225 mm, 450 mm and 675 mm90° extension elbow45° extension elbow45° elbow


The installation should also be in accordance with thelatest edition of the following British Standard Codesof Practice:-

BS 715 Metal flue pipes, fittings, terminalsand accessories.

BS 799:5 Oil storage tanks.BS 1181 Clay flue linings and flue terminals.BS 4543:3 Factory made insulated chimneys for

oil fired appliances.BS 4876 Performance requirements for oil

burning appliances.BS 5410:1 Code of Practice for oil firing appliances.BS 5449 Forced circulation hot water systems.BS 7593 Code of Practice for treatment of

water in heating systems.BS 7671 Requirements for electrical

installations, IEE Wiring Regulations.

Failure to install and commission appliancescorrectly may invalidate the boiler warranty.

IMPORTANT

Before starting any work on the boiler, or fuel supplyplease read the health and safety information given inSection 12 on page 47.

4.4.1 Fuel storage

The tank should be positioned in accordance with therecommendations given in BS 5410:1:1997, which givesdetails of filling, maintenance and protection from fire.

A steel tank may be used and must be constructed toBS 799:5:1987 and OFS T200.

A galvanised tank must not be used.

A plastic tank may be used and must comply withOFS T100.

Note: Plastic tanks should be adequately anduniformly supported on a smooth level surface, acrosstheir entire base area.

Fuel supply4.4

Installation of a Grant Vortex boiler must be inaccordance with the following recommendations:-

a Building Regulations for England and Wales,and the Building Standards for Scotland issuedby the Department of the Environment and anylocal Byelaws etc.

b Model and local Water Undertaking Byelaws.

c Applicable Control of Pollution Regulations.

d The following OFTEC requirements:-

OFST 100 Polythene oil storage tanks fordistillate fuels.

OFST 200 Fuel oil storage tanks and tankbunds for use with distillate fuels,lubrication oils and waste oils.

Further information may be obtained from theOFTEC Technical Information Book 3(Installation requirements for oil fired boilersand oil storage tanks).


Regulations to comply with4.3

Regional statutory requirements may deem this appliance to be a 'controlled service'.Where this is the case, it is a legal requirement that the appliance is installed and

commissioned either under the remit of building control or by a 'Competent person' suchas a suitably qualified Oftec registered technician.

Fig. 2 - Kitchen System model



4.4.2 Fuel pipes

1 Fuel supply pipes should be of copper tubing withan external diameter of at least 10 mm.Galvanised pipe must not be used.All pipe connections should preferably use flaredfittings. Soldered connections must not be used onoil pipes.

2 Flexible pipes must not be used outside the boiler case.

3 A remote sensing fire valve must be installed in thefuel supply line (outside) where it enters the building,with the sensing head located above the burner.Recommendations are given in BS 5410:1:1997.

4 A metal bowl type filter with a replaceable micronicfilter must be fitted in the fuel supply line adjacent tothe boiler. A shut-off valve should be fitted before thefilter, to allow the filter to be serviced.

5 A flexible fuel line, adaptor and 1/4" BSP isolation

valve are supplied loose with the boiler for the finalconnection to the burner. If a two pipe system or'Tiger Loop' type de-aerator is used, an additionalflexible fuel line (600 mm) and 3/

8" to 1/

4" BSP male

adaptor are available to purchase from GrantEngineering (UK) Limited, Part No. RBS104.

6 Metal braided flexible pipes should be replacedannually when the boiler is serviced. Long lifeflexible pipes should be inspected annually andreplaced at least every 60 months.

4.4.3 Single pipe system - (See Fig. 3)

1 Where the storage tank outlet is above the burnerthe single pipe system should be used. The heightof the tank above the burner limits the length ofpipe run from the tank to the burner.

2 As supplied the burner is suitable for a single pipesystem.

4.4.4 Two pipe system - (See Fig. 4)

1 When the storage tank outlet is below the burner,the two pipe system should be used. The pipe runsshould be as shown in Fig. 4. The return pipeshould be at the same level in the tank as thesupply pipe, both being 75 to 100 mm above thebase of the tank. The pipe ends should be asufficient distance apart so as to prevent anysediment disturbed by the return entering thesupply pipe.

2 Avoid the bottom of the tank being more than 3 mbelow the burner.

3 A non-return valve should be fitted in the supplypipe together with the filter and fire valve. A non-return valve should be fitted in the return pipe ifthe top of the tank is above the burner.

4 To be used with a two-pipe system, the burnermust be fitted with an additional flexible fuel line(a flexible fuel line (600 mm) and 3/

8" to 1/

4" BSP

male adaptor are available to purchase from GrantEngineering (UK) Limited), Part No. RBS104. SeeSection 4.4.6.

5 The pump vacuum should not exceed 0.4 bar.Beyond this limit gas is released from the oil.

For guidance on installation of top outlet fuel tanks andsuction oil supply sizing, see OFTEC booklet T1/139.Available at www.oftec.org.uk.

Fig. 3 - Single pipe system

Filter

Firevalve

Shut-offvalve

Shut-offvalve

A

Sludgevalve

Fillpipe

VentpipeLevel

gauge

Fuelstoragetank

Firevalvesensor

Pump

Head A

(m)

Maximum pipe run (m)

0.5

1.0

1.5

2.0

10mm OD pipe

10

20

40

60

12mm OD pipe

20

40

80

100


Fig. 5 - De-aeration device system

4.4.5 Tiger Loop system - (See Figs. 5 and 6)

1 When The storage tank is below the burner, an alternativeto a two pipe system can be achieved using a 'Tiger Loop'type oil deaerator. This effectively removes the air fromthe oil supply on a single pipe lift.

2 The de-aerator is connected close to the boiler as atwo pipe system (omitting the non-return valve) asshown in Fig. 5. Refer to the manufacturersinstructions supplied with the de-aerator.The de-aerator must be mounted vertically.


Fig. 4 - Two pipe system

Note: To prevent any possibility of fuel fumesentering the building, the de-aerator must be fittedoutside.

3 To be used with a de-aerator, the burner must befitted with an additional flexible fuel line (aflexible fuel line (600 mm) and 3/

8" to 1/

4" BSP

male adaptor are available to purchase from GrantEngineering (UK) Limited), Part No. RBS104. SeeSection 4.4.6.

Filter

Firevalve

Shut-offvalve

Shut-off valve

Shut-offvalve

Seesection 4.4.6

A

Return

Supply

Head A

(m)

Maximum pipe run (m)

0

0.5

1.0

1.5

2.0

3.0

3.5

10mm OD pipe

35

30

25

20

15

8

6

12mm OD pipe

100

100

100

90

70

30

20

Nonreturnvalve

Firevalvesensor

Sludgevalve

Fillpipe

Ventpipe

Levelgauge

Fuelstoragetank

Firevalve

Tankmaster

Seesection 4.4.6

Sludgevalve

Fillpipe

Ventpipe

Fuelstoragetank

De-aeration devicee.g. Tiger Loop

See Fig. 6

Firevalvesensor

Return

Supply


4.4.6 Two pipe oil supplies

Riello RDB burner - See Fig. 7

1 The fuel pump is supplied for use with a singlepipe fuel supply system. For use on a two pipesystem, it is necessary to fit the By-pass screw (seeFig. 7) into the tapping in the return port.

2 The By-pass screw is supplied in the boileraccessory pack.

3 On all models except 46/58 and 58/78:Remove the plastic burner cover (secured by twoscrews). To gain access, it may be necessary toremove the plinth - loosen the screw securing the righthand side of the plinth, then withdraw the plinthforward from the right and away from the case.On 46/58 and 58/70 models only:Remove the plastic burner cover (secured by threescrews). It may be necessary to remove the burnerfrom the boiler to access the cover screws - see below.For ease of access to the fuel pump, to fit the by-passscrew and connect the oil lines, the burner can beremoved from the boiler. To do this, unscrew thesingle nut at the top of the burner (using a 13 mmspanner) and withdraw the burner from the boiler.

4 Remove and discard the blanking plug from thereturn connection of the pump and fit the By-passscrew using an hexagonal key.

5 Connect the return oil flexible fuel line to the pump.

6 Connect the 3/8" to 1/

4" BSP adaptor to the flexible

fuel line.

7 Flexible fuel lines and adaptors are available topurchase from Grant Engineering (UK) Ltd.

1/4" BSP femaleconnections

Tiger Loop

SUPPLYTO PUMP

RETURNFROM PUMP

SUPPLYFROM TANK

Fig. 6 - Tiger loop 'de-aeration' device


Fig. 7 - Riello RDB pump

1 Oil inlet connection2 Return connection3 By-pass screw4 Pressure gauge connection5 Pressure adjuster6 Vacuum gauge connection7 Solenoid8 Supply to nozzle

1 2

3

4

5

6

7

8

1 A 230/240 V ~ 50 Hz mains supply is required.

The boiler must be earthed.

2 The supply must be fused at 5 Amp and there mustonly be one common isolator for the boiler andcontrol system, providing complete electricalisolation.

3 A fused double pole switch or a fused three pinplug and shuttered outlet socket should be used forthe connection.

4 The power supply cable should be at least 0.75 mm²PVC as specified in BS 6500, Table 16.

5 All the wiring and supplementary earth bondingexternal to the boiler must be in accordance withthe current I.E.E. Wiring Regulations.

6 Any room thermostat or frost thermostat used mustbe suitable for use on mains voltage.

7 In the event of an electrical fault after installationof the boiler, the following electrical system checksmust be carried out:- Short circuit, Polarity, Earthcontinuity and Resistance to earth.

Electricity supply4.5


Fig. 8 - Air supply for room sealed balanced flue boilers


Fig. 9 - Air supply for conventional flue boilers

BOILER

IN ROOM

Room sealed balanced flue

no ventilation required to room

BOILER

IN COMPARTMENT


compartment ventilated from room


compartment ventilated from outside

B

B

A

A

BOILER

IN ROOM

Conventional open flue

C

BOILER

IN COMPARTMENT


compartment ventilated from room


compartment ventilated from outside

C C

D

D

E

46/58 kW

292 cm² (45 in²)

583 cm² (90 in²)

58/70 kW

358 cm² (56 in²)

715 cm² (112 in²)

Output

Vent A

Vent B

15/26 kW

116 cm² (18 in²)

231 cm² (36 in²)

26/36 kW

171 cm² (27 in²)

341 cm² (53 in²)

Output

Vent A

Vent B

36/46 kW

226 cm² (35 in²)

451 cm² (70 in²)

46/58 kW

292 cm² (45 in²)

583 cm² (90 in²)

875 cm² (136 in²)

58/70 kW

358 cm² (56 in²)

715 cm² (112 in²)

990 cm² (154 in²)

Output

Vent C

Vent D

Vent E

15/26 kW

116 cm² (18 in²)

231 cm² (36 in²)

347 cm² (54 in²)

26/36 kW

171 cm² (27 in²)

341 cm² (53 in²)

512 cm² (80 in²)

Output

Vent C

Vent D

Vent E

36/46 kW

226 cm² (35 in²)

451 cm² (70 in²)

677 cm² (105 in²)

Air supply4.6

See Figs. 8 and 9

A sufficient permanent air supply to the boiler shouldbe provided:

a For proper combustion of fuel and effectivedischarge of combustion products to the open air.

b For the ventilation of any confined space inwhich the boiler is installed to preventoverheating of the boiler any equipment in andnear the boiler.


Fig. 10 - Grant Orange flue system in typicalbrick chimney


It should be both the designer's and installer's concernthat the air required for these functions be introducedso as to cause as little discomfort as possible to thebuilding occupants and thus to offer them the leasttemptation to obstruct the ventilators.

Further details may be obtained from BS 5410:1:1997.

Notes:For a boiler fitted in a compartment, which isventilated as shown, no additional allowance isnecessary.Open flue - Extract fans, where needed, shouldbe in accordance with Section 4.4.7 in BS 5410Part 1 1997.All ventilation areas given are for domesticapplications. For all other cases refer to BS5410 Part 2 1978.

Under no circumstances can Grant Vortex boilersbe installed with existing flue systems. Only fluesystems and components suitable for wet fluesshould be used.Failure to install the correct type of flue system willinvalidate the warranty.

See Fig. 10

General

Grant condensing boilers have high operating efficienciesand low flue gas temperatures. Care must be taken toensure the flue system is suitable for the very low flue gastemperatures and condensate in the flue gases.

Suitable conventional flue systems (Orange system)are available from Grant UK - see Fig. 10.

1 The flue must terminate in a down draught free area,i.e. at least 600 mm above the point of exit through theroof or preferably above the ridge level.

2 The condensate may be allowed to run back intothe boiler. A condensate drain at the base of theflue system is not required.

3 The flue terminal must be at least 600 mm fromany opening into the building, and 600 mm aboveany vertical structure or wall less than a horizontaldistance of 750 mm from the terminal. See Fig. 11.

4 If an existing chimney is to be used, it must be linedwith a smooth bore stainless steel liner suitable foruse with oil fired condensing boilers. The top andbottom of the annular space must be sealed.The internal flue and liner diameter for all modelsup to 46 kW output must be 100 mm (4 in) and forthe 46/58 and 58/70 models 125 mm (5 in).

Adjustable section235 to 300mmWXA250/100WXA250/125

45 elbowO

WE45/100WE45/125

Brickchimney

Flaunching

Locking band

CLocking band

Terminal/top plate/flexi flue adaptor

Rigid to flexi flueconnector (bottom)

Extension

Boiler flueconnector

Boiler

Flexi pack

Bottom fixings

Top fixings

Conventional flue system4.7

Grant recommends the use of the Grant 'Orange'flue system, specifically designed for the Vortexrange of condensing boilers. Refer to Section 4.7for further details.The maximum vertical height (from the top of theboiler to the terminal) for the 'Orange' system is19 metres.


5 If a rigid flue is used internally or externally, it mustbe of the twin-wall type incorporating seals at alljoints, constructed with a stainless steel inner skin andbe suitably insulated and weatherproofed. The internalflue diameter for a rigid flue for all models - up to andincluding the 58/70 - is 100 mm (4 in).Grant recommends the use of the Grant 'Green' fluesystem components for this application. Refer toSection 4.1 for details. Note: As no flue adaptor issupplied with the boiler it will be necessary topurchase the Grant CF adaptor kit (Ref. CFA15/70)in order to correctly connect the 'Green' system fluecomponents to the boiler.If required, it is possible to use the white paintedsingle-wall straight flue extensions, adjustableextensions and elbows from the Grant 'Orange' systemfor the internal section of the flue system. Thesecomponents can be fitted between the boiler connectorand flue adaptor. The flue adaptor, to which theexternal twin-wall 'Green' flue components areconnected, can therefore be situated just before theflue system passes through the wall.Note: Grant 'Orange' system single-wall fluecomponents must not be used externally.The maximum vertical height (from the top of theboiler to the terminal) for the 100 mm diameter'Green' system twin-wall flue is 8 metres.

6 Twin-wall flues are recommended for externallyrun flues to reduce the possibility of the condensatefreezing in the flue.

7 No part of any flue system should be made of anasbestos material; aluminium must not be used inany part of the flue. Only stainless steel fluecomponents should be used.

8 If the draught conditions are satisfactory, the flueshould terminate with a standard cowl.

9 Refer to the locally applicable BuildingRegulations, BS 5410:1 and OFTEC InstallationRequirements (Books 2 and 3) for further guidanceon conventional flue systems.

It is important to ensure that the flue system is sealedand that condensate cannot escape. Up to 1.5 l/h ofcondensate can be produced in a conventional fluesystem.

Only use flue systems suitable for oil fired condensingboilers.

Do not use fire cement. The use of high temperaturesilicone sealants is recommended.


Part No.

GFKIT 6/100

GFKIT 6/125

GFKIT 8/100

GFKIT 8/125

GFKIT 10/100

GFKIT 10/125

GFKIT 11/100

GFKIT 11/125

GFKIT 12/100

GFKIT 12/125

GFKIT 14/100

GFKIT 14/125

GFKIT 16/100

GFKIT 16/125

Flexi Pack (Orange System)

100 mm dia. x 6 metre














Part No.

WX 150/100

WX 150/125

WX 250/100

WX 250/125

WX 450/100

WX 450/125

WX 950/100

WX 950/125

Extensions (Orange System)

100 mm dia. x 150 mm








Grant EZ-Fit Flexi Pack conventional flue system(Orange System) - See Fig. 10

A range of Flexi pack conventional flue lining kits areavailable from Grant UK. The packs have beenspecifically produced for Grant Vortex oil firedcondensing boilers.

Contents of Grant EZ-Fit Flexi Pack

The pack includes a terminal/top plate/flexi flue adaptor,stainless steel smooth bore flexible flue liner, a rigid to flexiadaptor and a boiler flue connector. Two diameters areavailable, a 100 mm for models up to 46 kW and 125 mmfor models above 46 kW.

Extensions

A range of white powder coated single wall extensionsare available to connect the boiler to the flexible liner.The external diameter of the extensions is 150 mm.Extensions are supplied with locking bands.

Flue extensions cannot be cut.

An adjustable extension and 45° elbow are alsoavailable. See Fig. 10.

The rigid flue between the boiler and flexible flue linershould incorporate an adjustable section to allowinspection and cleaning of the flue system.



Apart from a conventional flue, several balanced flueoptions are available for use with the Grant Vortexboilers. All are suitable for use with Class C2 kerosene.

Note: None of the flue sections in the followingsystem can be cut.

1 Low level horizontal balanced flue (Yellow system)

Available in Short (for single thickness brick walls)and Standard kits.

Extensions are available which extend the flue by225 mm, 450 mm or 675 mm. 90° and 45° elbowsare also available.

The maximum flue length - from the centre of theboiler flue outlet to the outer face of the wall - is 4metres (with or without elbows included). No morethan 2 x 45° or 1 x 90° elbow should be fitted persystem.

IMPORTANT: For Vortex boilers with the flue tothe left hand side - leave a minimum gap of 150mm between the side of the boiler and the wall toaccommodate the condensate trap.

2 High level (horizontal) balanced flue (Whitesystem)

Allows the flue to rise vertically within the buildingbefore exiting through the wall horizontally.

The maximum flue length - from the top of theboiler flue outlet to the outer face of the wall - is 6metres for all Vortex boilers.

Extensions are available which extend the flue by225 mm, 450 mm or 950 mm. An adjustableextension of 275 to 450 mm is also available.

A 45° elbow is also available. No more than 2 x 45°elbows should be fitted per system. Each elbow reducesthe overall maximum length of the system by 1 metre.

3 Vertical balanced flue (White system)

Allows the flue to rise vertically from the boiler toexit through the roof.

The maximum flue length - from the top of theboiler flue outlet to the terminal - is 8 metres for allVortex boilers.

Balanced flue options4.8

Extensions are available which extend the flue by225 mm, 450 mm or 950 mm. An adjustableextension of 275 to 450 mm is also available.

A 45° elbow is also available. No more than 2 x45° elbows should be fitted per system. Each elbowreduces the overall maximum length of the systemby 1 metre.

4 External balanced flue (Green system)

Where it is not practical to use a low level (Yellowsystem) or internal high level/vertical (Whitesystem) balanced flue, the boiler can be fitted withan external vertical/high level flue (Green system).See Fig. 10a.

The Starter kit fits to the boiler in the same way as alow level balanced flue (Yellow system) and theexternal Tee allows the connection of a twin wallinsulated flue pipe and a combustion air inlet -providing a room sealed flue system. The externalsystem can terminate at either high level or vertically(above roof level) as required. See Fig. 10a.

The minimum dimensions for locating the terminalfrom building features (windows, doors, etc.) areshown in Fig. 11.

If the flue terminal is fitted less than 2 metres above asurface to which people have access, the terminal mustbe protected by a guard. The guard must be fittedcentrally over the flue terminal and securely fixed tothe wall.

The low level balanced flue (Yellow system) issupplied with a stainless steel guard. This must befitted in all circumstances to prevent objects fromentering the flue outlet.

The terminal must be positioned so as to avoidproducts of combustion accumulating in stagnantpockets around the buildings or entering intobuildings. Care should be taken that the plume fromcondensed flue gases does not cause a nuisance.

The following external flue (Green system) componentsare available from Grant UK.



Fig. 10a - External balanced flue (Green system)

Green System components

Item - for models up to 70 kW output

Starter kit - standard

Starter kit - short

150 mm extension

250 mm extension

450 mm extension

950 mm extension

195-270 mm adjustable extension

45° elbow

High level terminal

Vertical terminal

Wall bracket - standard

Wall bracket - extended

Part No.

GK200

GK200S

GX150/200

GX250/200

GX450/200

GX950/200

GXA250/200

GE45/200

GTH200

GTV200

GWB200

GEB200

Green System components

Item - for models up to 26 kW output

Starter kit - standard

Starter kit - short

150 mm extension

250 mm extension

450 mm extension

950 mm extension

195-270 mm adjustable extension

45° elbow

High level terminal

Vertical terminal

Wall bracket - standard

Wall bracket - extended

Part No.

GK90

GK90S

GX150/90

GX250/90

GX450/90

GX950/90

GXA250/90

GE45/90

GTH90

GTV90

GWB90

GEB90

Vertical terminal kitGTV90 (15 - 26 kW)GTV200 (26 - 46 kW)

45 elbow kitGE45/90 (15 - 26 kW)GE45/200 (26 - 46 kW)

O

Starter kitGK90 (15 - 26 kW)GK200 (26 - 46 kW)GK90S - short (15 - 26 kW)GK200S - short (26 - 46 kW)

High level terminal kitGTH90 (15 - 26 kW)GTH200 (26 - 46 kW)

Extension kits

Wall bracketExtended wall bracket

Locking band

Airintake

DO NOTOBSTRUCT

Components and Part Numbers

Typicalflue system


For additional protection of either the entire heatingsystem, or the boiler and localised pipework, it isrecommended that a frost thermostat be installed.Refer to Section 9 for connection details.To protect the heating system, the frost thermostatshould be sited within the house in such a place that itcan detect any rise and fall in the ambient airtemperature, i.e. in a room with a radiator.

Frost protection4.9


Fig. 11 - Clearances for Balanced flues

Notes: * 75 mm with protection.

** Only applies if one or both terminals are balanced flues.

Distances measured to rim of terminal.

Clearances recommended by GrantEngineering (UK) Limited in accordance withBritish Standards and Building Regulations.

A Below a gutter or sanitary pipework

B Horizontal from an opening, air brick or window

C Above ground or balcony level

D Below eaves or balcony

E From an internal or external corner

F From a terminal facing the terminal

G From a surface facing the terminal

H Vertical from terminals on the same wall

I Horizontal from terminals on the same wall

J Below an opening, air brick, window etc.K From vertical sanitary pipework

L Vertical flue from a wall

M From an oil storage tank

Min. distance (mm)Terminal position* 600

600

300

*600

300

1200

600

1500

**750

600

300

750

1800

Notes:1 An opening means an openableelement, such as an openablewindow, or a permanent openingsuch as a permanently open air vent.

2 Notwithstanding the dimensionsgiven, a terminal should be at least300 mm from combustible material,e.g. a window frame.

3 A way of providing protection ofcombustible material would be to fita heat shield at least 750 mm wide.

Where the frost thermostat is installed outside the house (toprotect a boiler installed in an external boiler room orgarage) or in an attic, it is recommended that it be used inconjunction with a pipe thermostat to avoid unnecessary andwasteful overheating of the property. The pipe thermostatshould be located on the boiler return pipe, and set to operateat 25° C. Refer to Section 9 for connection details.



Boiler location4.10

1 The boiler must stand on a surface that is firm andlevel. It does not require a special hearth as thetemperature of the boiler base is less than 50° C.

2 Sufficient clearance must be allowed at the front of theboiler to remove the burner and baffles for servicing.

3 Kitchen and Utility models only - Once the boilerhas been installed, a permanent worktop may befitted over it as access to the top of the boiler is nolonger required after installation.

Kitchen System and Utility System boilers requirea removable section of worktop above the boiler toprovide access for servicing.

4 Care should be taken when siting the condensatetrap. See Section 4.17.

Flow connections - Kitchen/Utility modelsOn all models except the 46/58 and 58/70: A push-fitconnection is provided for the heating flow - a 22 mmelbow on the 15/26 and a 28 mm straight connector onthe 26/36 and 36/46.Both the elbow connector (15/26) or boiler flow pipe/connector (26/36 and 36/46) can swivel to allow theheating flow to pass through either the left or righthand side case panel - via the holes provided.The 46/58 and 58/70 models have a 1¼" BSP tappingon top of the boiler, see Fig. 12.Flow connections - System modelsAll system models are supplied with a push-fit elbowconnection for the heating flow - 22 mm (15/26) or 28 mm(26/36 and 36/46).

Return connection (see also Section 5.4) - All modelsexcept the 46/58 and 58/70 have a stainless steel pipe onthe right hand side for the return connection - 22 mm forthe 15/26 models or 28 mm for the 26/36 and 36/46models.The 46/58 and 58/70 models have a 1¼" BSP tappingon top of the boiler, see Fig. 12.

A compression fitting must be used on the stainless steelreturn connection.

Holes are provided in the casing side panels to routethe return to the left - 15/26 models only, see Fig. 12a.

IMPORTANT: All pipes to be fitted into the push-fitconnectors provided should be cut using a pipe sliceror pipe cutter - to leave the pipe ends with a slightradius and free from any burrs or sharp edges. Pipes tobe used with these fittings should not be cut squareusing a hacksaw.

Water connections4.11

Water connections - System models4.12

1 A 15 mm discharge pipe must be connected to thesafety valve outlet connection. The pipework betweenthe safety valve and the boiler must be unrestricted,i.e. no valves. The discharge pipe should be run to theoutside of the building and terminate so that it cannotcause injury to persons or property.

2 A 15 mm double check valve ballofix type valve isprovided on the flexible filling loop hose forconnection of the cold mains supply to the heatingsystem. The cold mains supply should terminateinside the boiler casing.

3 A drain cock is fitted at the bottom on the front ofthe boiler to allow the heating system to be drained

4 The expansion vessel is connected via a flexiblehose to allow it to be moved to gain access to thebaffle cleaning cover. When replacing the vessel,care should be taken to ensure that the flexibleconnecting hose is not twisted.

Fig. 12 - 46/58, 58/70 flow and return connections

HEATINGRETURN

Return connection

Flow connection

Boiler thermostat andOverheat thermostat phials



All models

To avoid the danger of dirt and foreign matter enteringthe boiler the complete heating system should bethoroughly flushed out - before the boiler is connectedand then again after the system has been heated and isstill hot. This is especially important where the boileris used on an old system.

For optimum performance after installation, this boiler and itsassociated central heating system must be flushed in accordancewith the guidelines given in BS 7593:1992 'Treatment of waterin domestic hot water central heating systems'.

This must involve the use of a proprietary cleaner,such as BetzDearborn's Sentinel X300 or X400, orFernox Restorer. Full instructions are supplied with theproducts, but for immediate information, pleasecontact BetzDearborn on 0151 4209563 or Fernox on0179 9550811.

For Long term protection against corrosion and scale,after flushing, it is recommended that an inhibitor such asBetzdearborn's Sentinel X100 or Fernox MB-1 is dosedin accordance with the guidelines given in BS 7593:1992.

Failure to implement the guidelines will invalidate thewarranty.

Fig. 12a - View with rear panel removed - 15/26 models only

Sealed systems4.13

See Fig. 13

1 All Grant Vortex boilers are suitable for use withsealed systems complying with the requirements ofBS 5449.The maximum temperature of the central heatingwater is 80° C.

2 The system must be provided with the following items:-a Diaphragm expansion vessel complying with

BS 4814.b Pressure gauge.c Safety valve.d Approved method for filling the system.

Refer to BS 7074:1 for further guidance.

3 The expansion vessel can be fitted in either thereturn or flow pipework in any of therecommended positions as shown in Fig. 13. Toreduce the operating temperature of the expansionvessel diaphragm, position it below the pipe towhich it is connected. The expansion vessel may bepositioned away from the system, providing theconnecting pipe is not less than 13 mm diameter.

4 The pressure gauge should have an operating rangeof 0 to 4 bar.

5 The safety valve, set to operate at 2.5 bar, shouldbe fitted in the flow pipework near to the boiler.The pipework between the safety valve and boilermust be unrestricted, i.e. no valves. The safetyvalve should be connected to a discharge pipewhich will allow the discharge to be seen, butcannot cause injury to persons or property.



Fig. 13 - Sealed system

6 Provision should be made to replace water lostfrom the system. This can be done manually (whereallowed by the local water undertaking) using anapproved filling loop arrangement incorporating adouble check valve assembly (as supplied fitted onSystem models).

7 An automatic air vent should be fitted to thehighest point of the system.

8 The system design pressure (cold) should be between0.5 and 1.0 bar. This pressure is equivalent to themaximum static head (see Fig. 14) in bar + 0.3 (1 bar= 10.2 metres of water).

9 If thermostatic radiator valves are fitted to allradiators, a system by-pass must be fitted. The by-pass must be an automatic type.

Fig. 14 - Sealed system boilers

If thermostatic radiator valves are fitted, thesystem must incorporate an adequate by-pass.

10 Filling of the system must be carried out in amanner approved by the local Water Undertaking.Where allowed, the system may be filled via thefilling loop supplied (the loop arrangementincludes a double check valve assembly).

11 All fittings used in the system must be able towithstand pressures up to 3 bar.

12 Radiator valves must comply with the requirementsof BS 2767(10):1972.

13 One or more drain taps (to BS 2879) must be usedto allow the system to be completely drained.

14 The expansion vessel is connected via a flexiblehose to allow it to be moved to gain access to thebaffle cleaning cover. When replacing the vessel,care should be taken to ensure that the flexibleconnecting hose is not twisted.



Fig. 15 - Vortex 26/36 Utility System model shown

Boiler components - System models4.14

Top view

Burner

Lock-outbutton

Air supplytube

Heating return(not shown)

Automaticair vent

Automaticair vent

Heating flow

Condensatedrain outlet(not shown)

Circulatingpump

Pressurerelief valve

Thermostatbulbs

Filling loop

All System models have the following sealed systemcomponents factory fitted (refer to Fig. 15):-

a A diaphragm expansion vessel complying withBS 4814, pre-charged at 1.0 bar. Refer toSection 3.2.

b System pressure gauge, with an operating rangeof 1 to 4 bar.

c Pressure relief safety valve complying withBS 6759 and set to operate at 2.5 bar.

d Automatic air vent, fitted to the flow pipe of theboiler, ensures the boiler is vented.

e Filling loop. This must be isolated anddisconnected after filling the system.

3 Refer to Section 3.2 for system volume and BS7074: for further guidance. Refer to Section 5.6 forfurther details of the expansion vessel.

On underfloor systems it is essential that the returntemperature must be maintained above 40° C toprevent internal corrosion of the boiler water jacket.

Underfloor heating systems4.15

Fig. 16 - Thermostat phial position - 15/26 only

Fig. 15a Thermostat phial position - 26/36 only

26/36 Systemboiler shown.For non system boilerspockets are on side of pipe.


Fig. 17 - Condensate trap

General - Grant boilers are compatible with bothcopper and plastic pipe. Where plastic pipe is used itmust be of the oxygen barrier type and be of thecorrect class (to BS 7291:Part 1:1990) for theapplication concerned.

IMPORTANT: The first metre of pipeworkconnected to both the heating flow and returnconnections of the boiler must be made in copper onall types of system - sealed or open-vented..

Sealed systems - If plastic pipe is to be used, theinstaller must check with the plastic pipe manufacturerthat the pipe to be used is suitable for the temperatureand pressures concerned. Pipe must be Class S to BS7291: Part 1:1990.

The system should incorporate a low-pressure switchto shut off power to the boiler if the system pressuredrops below 0.2 bar. A suitable low pressure switch kitis available to purchase from Grant Engineering (UK)Limited, Part No. MPCBS 62.

Underfloor systems - Plastic pipe may be used onUnderfloor systems where the plastic pipe is fittedafter the thermostatic mixing valve. Copper tube mustbe used for at least the first metre of flow and returnprimary pipework between the boiler and theunderfloor mixing/blending valves.

When in condensing mode the Grant Vortex boilerproduces condensate from the water vapour in the fluegases. Provision must be made for the safe andeffective removal of the condensate.

Condensate can be disposed either internally - into aninternal domestic waste system or directly into the soilstack, or externally - to an external soil stack, gully,hopper or soakaway.

It should be noted that connection of a condensate pipe to thedrain may be subject to local Building Control requirements.

Pipework

Condensate disposal pipework must be plastic (plasticwaste pipe is suitable). Copper or steel pipe is NOTsuitable and should NOT be used.

The internal diameter of condensate disposal pipesshould not be less than 20 mm - e.g. 22 mm plasticplumbing pipe or 19 mm (¾") plastic overflow pipe.

Condensate disposal pipes must be fitted with a fall of2.5° (1:20).


For boilers installed where it is not possible for the pipeto fall towards the point of discharge - either internallyinto a waste system or externally to a gulley - e.g. in abasement, it will be necessary to use a condensate pump.

Condensate disposal pipes should be kept as short aspossible and the number of bends kept to a minimum.Pipes should be adequately fixed to prevent sagging,i.e. at no more than 0.5 metre intervals.

Ideally, external pipework, or pipework in unheatedareas such as garages, should be avoided. Ifunavoidable, external pipework should be kept as shortas possible (less than 3 metres) and 32 mm waste pipeused to minimise the risk of freezing.

The number of bends, fittings and joints on externalpipes should be kept to a minimum to reduce the riskof trapping condensate.

Condensate trap

Condensate disposal pipes MUST be fitted with a trap- whether they are connected internally or externally.

All Grant Vortex boilers are supplied with acondensate trap to provide the required 75 mm waterseal in the condensate discharge pipe from the boiler.This trap incorporates a float (which will create a sealwhen the trap is empty) and an overflow warningoutlet (fitted with a rubber bung), See Fig. 17.

Pipework materials4.16

Condensate disposal4.17

The trap must be located internally in an accessibleposition to allow for routine maintenance. Themounting bracket supplied with the trap MUST beused - the trap should NOT be supported by thecondensate pipework only.


A 22 mm push-fit plastic plumbing connector issupplied with the boiler to connect the plastic pipe tothe stainless steel condensate outlet pipe - on the lefthand side of the boiler.

Use 22 mm plastic plumbing pipe between the boilerand the inlet of the trap. Either 22 mm plasticplumbing pipe or 19 mm (¾") overflow pipe can beused from the outlet of the trap.

Note: Due to the wall thickness of plastic plumbingpipe, it may be necessary to chamfer the internal edgeof the pipe before fitting it onto the spigot in the outletof the trap.

If connecting the condensate discharge internally - intoa waste system or soil stack - the bung must be fitted inthe overflow outlet of the trap.

On external discharge systems to a gully or soakaway,the bung should be removed from the overflow outlet.If connected to an external soil stack, the bung must befitted on the trap.

If there is any discharge of condensate from theoverflow outlet, this could indicate a blockage(possibly due to freezing). Turn off the boiler andcontact your service engineer.

Care should be taken when siting the trap such that theoverflow outlet is readily visible and that anycondensate overflowing from the outlet cannot causeeither a hazard to persons or damage to surroundingproperty or equipment.

Fig. 18 - Purpose made condensate soakaway


IMPORTANT: The trap MUST be checked at regularintervals (e.g. on every annual service) and cleaned asnecessary to ensure that it is clear and able to operate.

It is recommended that, if there is access to the lefthand side of the boiler, the condensate pipe beconnected to the boiler using a 'tee-piece' and cap toform a 'rodding eye' - to allow cleaning inside the backof the condensing heat exchanger via the boilercondensate outlet.

In the case of the 15/26 Kitchen and Utility modelsonly, the condensate pipe can be routed through theback of the boiler, to the right hand side. See Fig. 12a.

Condensate soakaway

To keep external pipework to a minimum, locate thesoakaway as close as possible to the boiler whilstensuring it is located clear of building foundations andother services, e.g. gas, electricity, etc.

The soakaway should be located at least 500 mm fromany adjacent building.

Ensure that the drainage holes in the soakaway tubeface away from the building.

Only use a soakaway where the soil is porous anddrains easily. Do not use in clay soils or where thesoil is poorly drained.

Backfill the hole around the soakaway tube with 10 mmlimestone chippings.

Ground level

32 mm waste pipe external to the building

2.5 fallO

25 mm

300 mm

400 mmmin.

Two rows of 3 x 12 mmholes at 25 mm centresand 50 mm from the bottomof the tube. Holes facingaway from the property.

Cement seal

100 mmplastictube

Sealedend

Backfill with 10 mmlimestone chippings


1 Carefully remove the packaging from the boilerand remove it from the transit pallet.

2 Either open the boiler door (Kitchen models) orpull off the boiler front panel (Utility models) andremove the literature packs. Give the UserInformation pack to the householder.

3 Lift off the two parts of the case top and removethe water connecting fittings.

Unpack the boiler5.1 Prepare the wall5.2

5 - BOILER INSTALLATION

See Fig. 19 and 19a

If the boiler is to be used with a low level balancedflue (Yellow system) make the hole in the wall for theflue as shown in Fig. 19a.

Note: Dimension B given in Fig. 19a includes anextra 10 mm over the size of the terminal to provideclearance for fitting.

Fig. 19a - Low level balanced flue (Yellow System) and Starter kit (Green System)

Fig. 19 - Low level balanced flue

Utility 46/58, 58/70

Utility 26/36, 36/46 and Utility System 26/36, 36/46

All other models

A

1102

780

768

Dimension (mm)Model

B dia

162

162

127

C

112

115

115



Fig. 20a - High level balanced flue (White system)

Fig. 20 - High level balanced flue

*Dimension A for Starter section and elbow/terminal only

High level and vertical balanced flue5.3

See Fig. 20 and 20a

If the boiler is to be used with the high level balancedflue (White system) make the hole in the wall as shownin Fig. 20a.

Note: Dimension B given in Fig. 20a includes anextra 10 mm over the size of the terminal to provideclearance for fitting.

Fitting instructions for the high level balanced flue andvertical balanced flue are supplied with the flue kits.

Adjustable sections: The adjustable extensions aretelescopic. The wall terminal section is adjustable andis suitable for a wall thickness of 215 mm to 450 mm.Simply adjust to the required length using a twistingmotion. The outer pipes must overlap by a minimumof 25 mm.

Utility 46/58, 58/70

Utility 26/36, 36/46 and Utility System 26/36, 36/46

All other models

2015 - 2335

1700 - 2020

1715 - 2115

Dimension (mm)Model

B dia

200

200

175

C

109

115

115

A

1595*

1280*

1215*


Refer to Section 4.11 and 4.12.

Flow connection

The Flow pipework can be routed to either side of theboiler, dependant on the type and direction of the fluesystem used.On all models, except the 46/58 and 58/70, a push-fitconnector is supplied fitted on the flow connection. Onthe 46/58 and 58/70 the flow connection is a 1/¼"female tapping – refer to Fig.12.

Return connection

On all models, except the 46/58 and 58/70, the returnpipework is connected to the stainless steel pipeprotruding from the right hand side panel using acompression fitting (not supplied).On the 46/58 and 58/70 models the return connectionis a 1/¼" female tapping – refer to Fig.12.On the 15/26 Kitchen and Utility models, holes are providedin the rear of the casing side panels to allow the return andcondensate pipework to be run through the back of theboiler. It will be necessary to remove the back panel from theboiler casing to fit this pipework, and to refit the panel beforeplacing the boiler in its final position.

Pipe holesAll models except the 46/58 and 58/70 have holes toenable the pipework to exit the boiler casing. On the15/26 models these holes are at the rear of both sidepanels and on the 26/36 and 36/46 models these holesin the removable flue outlet cover plates.On the 46/58 and 58/70 models the flue outlet coverplates can be repositioned to provide a vertical‘letterbox’ pipe opening, on either side of the boiler asrequired.To do this, first remove both casing top panels.Slacken the nuts on the four fixing studs on the sidecover plate to be moved. Slide the plate forwards byapprox 50 mm and re-tighten nuts.If access will be restricted, make any connections tothe boiler before placing it in its final position.If using a balanced flue system - Install the balanced fluesystem before connecting the heating system pipework tothe boiler. Once the flue system is fitted then complete thewater connections and fill the heating system.

If using a conventional flue system - Complete thewater connections and fill the heating system.

Check all connections for leaks and rectify as necessary.

Make the water connections5.4


1. Lift off upper rear casing panel.

2. Remove the insulation from the underside of thepanel (do not discard it) and remove the blankingpanel. Discard the blanking panel but retain thenuts and washers.

3. Unscrew the protective covers from the studs onthe flue dress panel supplied in the literature pack.Place the dress panel in position in the rear casingtop panel and secure in place using the nuts andwashers previously removed.

4. Re-fit the insulation to the panel with the foilsurface facing outwards. With a sharp knife cutaround the edge of the round opening in the dressplate to leave a round hole through the insulationfor the flue.

5. If the Grant ‘Orange’ flue system is being used –follow the instructions supplied with the flue kit.

6. If the Grant ‘Green’ system (100 mm rigid twin-wall flue) is to be fitted to the boiler then the GrantCF adaptor kit (Ref. CFA15/70) must be used –refer to Section 4.1. To fit the adaptor kit, proceedas follows.

7. Fully screw the length of threaded studding(provided in the kit) into the nut located in thecentre of the boiler flue outlet.

8. Fit the boiler connector (from the CF adaptor kit)over the threaded studding. Position flange on tothe neoprene gasket around the boiler flue outlet,ensuring that small spigot on the base of theconnector is located in the hole in the centre of theneoprene gasket and that end of studding passesthrough the hole in the of the spacer bracket. Fitwasher and wing nut provided onto end of threadedstudding and secure connector in position bytightening down on wing nut – as shown in Fig.21.

9. Re-fit the rear top casing panel to the boiler –fitting it over the boiler connector.

10. Fit the flue adaptor (from the adaptor kit) into theboiler connector. Note lubricate the seal on theadaptor using the lubricant provided beforeattempting to fit the flue adaptor.

11. Fit the first section of flue into the flue adaptor andsecure using the clamp band provided.

12. Assemble the remainder of the flue system asrequired, lubricating the seal on each componentbefore fitting.

Connect a conventional flue5.5


Expansion vessel pressure - System models5.6

Fig. 21 - Boiler flue connector


The expansion vessel fitted, is supplied with a chargepressure of 1.0 bar (equivalent to a max. static head of10.2 metres). The charge pressure must not be lessthan the actual static head at the point of connection.Do not pressurise the vessel above 1.5 bar.

The air pressure in the vessel must be checked annually.

The central heating system volume, using the expansionvessel as supplied, must not exceed the recommendedvolumes. If the system volume is greater, an extraexpansion vessel (complying with BS 4841) must befitted as close as possible to the central heating returnconnection on the boiler. The charge pressure of the extravessel must be the same as the vessel fitted in the boiler.Refer to BS 7074:1 for further guidance.

The air charge pressure may be checked using a tyrepressure gauge on the expansion vessel Schraedervalve. The vessel may be re-pressurised using asuitable pump. When checking the air pressure thewater in the heating system must be cold and thesystem pressure reduced to zero.

It is recommend that the boiler should be connected toa switched mains power supply from a programmer orcontrol system. If a Grant plug-in programmer is used,a permanent 240 V mains supply (fused at 5 Amp)must be taken to the boiler. A three core cable isrequired to connect the boiler terminal block to thelive supply. Refer to Sections 9.5 and 9.6 for typicalcontrol system wiring diagrams.

1 Lift off the boiler case top panel, if it has notalready been removed.

2 Remove the top of the control panel (Utilitymodels) or the wiring cover (on Kitchen models)and open the cable clamp. Route the supply cablethrough the hole in the rear panel (using thegrommet supplied) up to the control panel, pass itthrough the cable clamp and connect to the boilerterminal block (refer to Section 9) as follows:-

Brown to live (terminal 1)Blue to mains neutral (terminal 2)Green/Yellow to mains earth (terminal 3)

Kitchen and Kitchen System models - If the plug-inprogrammer is not fitted, ensure that the RED wirelink, between terminals 1 and 8 (1 and 10 on Systemmodel) on the boiler terminal block is fitted.

Note: Ensure that the route and length of the cableis such that the boiler front cover plate can beeasily removed without disconnecting the supplycable from the terminal block.

3 If the optional plug-in electronic programmer is tobe fitted, follow the fitting instructions given inSection 5.8 at this point.

4 Secure the cable in the cable clamp.

5 Place the wiring cover in position over the terminalblock, taking care not to trap any wires and securein position with the two M4 screws provided.

6 Ensure that all external wiring is adequately supported.

Do not switch on the electricity supply at this stage.

Connect the power supply5.7


1 Pump2 Control box3 Reset button with lock-out lamp4 Flange with gasket (do not remove from boiler)


5 Carefully fit the programmer into the aperture andgently push fully home.

6 Connect the control system wiring to the boilerterminal block. Refer to Sections 9.5 and 9.6 fordetails of typical system control wiring diagrams.

Important: Disconnect and remove the RED wirelink between terminals 1 and 8 (1 and 10 Systemmodel) on the 12-way boiler terminal block.

7 Replace the back of control panel and complete theelectrical connection procedure from paragraph 2of Section 5.7.Refer to the User's Operating manual provided with theboiler for the operation and setting of the programmer.

See Fig. 7

If a two pipe system is to be used refer to Section4.4.6.

1 Remove the oil inlet plug from the fuel pump andconnect the elbow of the flexible fuel line suppliedwith the boiler.

2 Connect the flexible fuel line to the rigid supplyusing the adaptor supplied. The supply entersthrough one of the holes in the casing plinth.

Important: Ensure the electrical supply to the boilerhas been isolated before fitting the programmer.

Remove the screws holding the back of the controlpanel in place and move it back enough to allowaccess to the rear of the timer aperture.

1 From underneath the control panel, remove thescrew securing the bracket behind the timeraperture. Withdraw and discard the bracket.

2 Remove the blanking piece from the timer aperture,in the control panel fascia, by firmly pressing onthe centre of the square until it is detached from therear of the fascia. Remove the blanking piece fromthe panel and discard.

3 Check that the wiring harness supplied with theprogrammer is correctly connected to it asfollows:-Brown wire to Mains Line (L) terminal ofprogrammerBlue wire to Mains Neutral (N) terminal ofprogrammerRed wire to Heating On terminal of programmerBrown wire to Water On terminal of programmerYellow wire to Water Off terminal of programmer

4 Connect the programmer to the boiler wiring byconnecting the 6-way plug and socket, ensure theplug is pushed firmly into the socket.

Fit the programmer Kitchen, Kitchen System5.8

Connect the fuel supply5.9

Fig. 22 - Riello RDB burner components

5 Air damper adjustment screw6 Air supply tube connection (balanced flue)7 Pump pressure adjustment screw8 Pressure gauge connection

Burner components5.10

7

8

1

23

5

4

6


1 Automatic air vent(s) are fitted to the top of theboiler (see Fig. 15). Check that the small cap on thetop of each air vent is screwed on fully, thenunscrew it one complete turn - the cap remains inthis position from now on.

2 If the flexible filling loop is used to fill the system, ensureit is connected and that the valve connecting it to theboiler is open and the valve at the front is closed.A valve is open when the operating lever is in line withthe valve, and closed when it is at right angles to it.

3 Ensure that the mains cold water supply valve is open(operating lever in line with the valve), then turn on themains cold water supply and gradually open the frontvalve on the filling loop until water is heard to flow.

4 Vent each radiator in turn, starting with the lowestone in the system, to remove air.

5 It is important that the pump is properly vented toavoid it running dry and damaging its bearings. Togain access to the pump for venting it is necessaryto remove the control panel.Loosen the four fixing screws securing the panel to thecasing, push the panel towards the rear of the boiler andlower the control panel to expose the pump.Remove the cap, then unscrew and remove the plugfrom the centre of the pump. Using a suitablescrewdriver rotate the exposed spindle about oneturn. Replace the plug and cap.


6 Check the operation of the safety valve by turningthe head anticlockwise until it clicks. The click isthe safety valve head lifting off its seat allowingwater to escape from the system.Check that this is actually happening.

7 Continue to fill the system until the pressure gaugeindicates between 0.5 and 1.0 bar. Close the fill pointvalve and check the system for water soundness,rectifying where necessary. Water may be releasedfrom the system by manually operating the safetyvalve until the system design pressure is obtained.

8 The system design pressure (cold) should bebetween 0.5 bar and 1.0 bar. The pressure isequivalent to the maximum static head in bar + 0.3(1 bar = 10.2 metres of water), where the statichead is the vertical height from the centre of theexpansion vessel to the highest point of the system.

9 Close the valves either side of the filling loop anddisconnect the loop.

Please ensure that the OFTEC CD/10 installationcompletion report (provided with the boiler) iscompleted in full.

Leave the top copy with the User. Retain the carboncopy.

Ensure that the User Information pack (supplied withthe boiler) is handed over to the Householder.

Fill the sealed system5.11

Completion5.12


Refer to Fig. 23 for boiler controls

It is important that the following commissioningprocedure is carried out to ensure safe and efficientoperation of the boiler.

Note: Check that the baffles are in position andthat the cleaning cover is correctly fitted and agood seal made.

IMPORTANT:Check that the turbulators are in position and thatthe ends are vertical (see Fig. 26).

Note: If the 15/26 models are down rated to 20 or15 kW, the burner head must be changed to a T1head. See Section 3.3.

1 Check that the water system has been vented (andpressurised if sealed system) and there are no leaks.

Ensure the automatic air vent on the condensingheat exchanger is open.

2 Check that all fuel line valves are open.

3 Remove the plastic burner cover if it was notpreviously removed.

4 Connect a combined vent manifold and pressuregauge to the pressure gauge connection port on the oilpump. See Fig. 7. Open the vent screw on your ventmanifold to vent the supply while the pump is running.

5 Set the boiler On/Off switch to Off. Check that allsystem controls are calling for heat and turn theboiler thermostat to maximum. Switch on theelectricity supply.

6 Set the boiler On/Off switch to On. The burner fanshould start and the burner should light withinabout 12 seconds. If the burner does not light andthe 'Lock-out' reset button lights, wait for about 45seconds then press the reset button to restart theignition process. This procedure may have to berepeated several times during first lighting.

7 With the burner alight, check the fuel pressure.Refer to the Technical Information, Section 3.3.Adjust the pressure if necessary - see Fig. 7. Notethat the 'Mains On' neon lights when the boiler isswitched on, but does not necessarily indicate theburner is firing.

8 Operate the boiler until it reaches normal operatingtemperature. Check oil supply/return pipe for leaks,rectifying where necessary.

9 Check the operation of the boiler thermostat.Ensure that by turning it anticlockwise it switchesthe burner off.

6 - COMMISSIONING

Fig. 23 - (Kitchen model shown)


6 - COMMISSIONING

10 With the burner alight, re-check the fuel pressure andre-adjust if necessary. Turn the boiler off, remove thepressure gauge and replace the plug in the pump.

11 Having ensured that there are no oil leaks, replace theburner cover. Ensure the flexible air tube is connectedto the burner (balanced flue models).

12 Relight the boiler and allow it to run for at least 20minutes.

13 Check the smoke number, if satisfactory check theCO

2. Set the CO

2 to the value given in Section 3.3

for the boiler concerned.

Use the hexagonal key supplied to adjust theburner air damper (see Fig. 22) as required.Turning the screw anti-clockwise closes thedamper and increases CO

2 level, turning the screw

clockwise opens the damper and reduces CO2 level.

Re-check the smoke number if the damper has beenmoved. Under no circumstances must the smokenumber be above 1.

Note: It is important that the air damper iscorrectly set.

14 Check the flue gas temperature.

15 Check that both the boiler overheat and boiler controlthermostat bulbs are correctly located in theirrespective pockets. For location of thermostat pockest,refer to Figs. 12, 15 or 16 - depending on the boilermodel concerned.Also check the condition of both thermostat capillaries,i.e. that they are not damaged, broken or kinked, andthat they are not trapped or crushed between anyinternal boiler components.

16 Replace the case top.

17 When the boiler has been adjusted and is runningsatisfactorily, balance the central heating system byadjusting the radiator lock shield valves. Start withthe radiator nearest the boiler and adjust the valvesto achieve the required temperature drop acrosseach radiator. If thermostatic radiator valves havebeen installed, check the system by-pass.

18 Switch off the boiler.

19 With the system hot, check again for leaks,rectifying where necessary. Drain the system whileit is hot to complete the flushing process. Refill andvent (and pressurise if a sealed system) the system.

20 A suitable central heating system inhibitor must beadded to protect the system against the effect ofcorrosion.

21 Close the front door panel (Kitchen models) orreplace the front panel (Utility models).

Note: After commissioning the boiler complete theCommissioning Report on page 2 of theseinstructions and the OFTEC CD/11 commissioningreport. Leave the top copy with the User and retainthe carbon copy.

If the boiler is to be left in service with the User, set thecontrols, timer (If optional programmer is fitted, seeinstructions supplied in kit) and room thermostat (iffitted) to the User's requirements.

If the boiler is not to be handed over immediately,close the boiler fuel supply valve and switch off theelectricity supply.

If there is any possibility of the boiler being left duringfrost conditions, then the boiler and system should bedrained.

IMPORTANT NOTE:

To allow the boiler to be commissioned and servicedcorrectly a combustion test point is provided on the frontcleaning door.

The CO2 and smoke test may all be carried out using this

test point. The test point is not suitable for measuringboiler efficiency or conventional flue draught.

When using the test point on the cleaning cover note thatthe flue gas temperature reading will be higher than thatmeasured in the flue thus resulting in an inaccurateefficiency reading. To obtain an accurate flue gastemperature and efficiency, the reading can only bemeasured outside through the low level flue terminal. Forhigh level and vertical balanced flues the reading may betaken from the flue kit test point provided . Refer toSection 3.3.

For Conventional flue draught measurement andefficiency a test point is provided in the conventional flueadaptor.


Important notes prior to servicing8.1

The User must be advised (and demonstrated ifnecessary) of the following important points:-

1 How to light and turn off the boiler and how tooperate the system controls.

2 The precautions necessary to prevent damage tothe central heating system and to the building, inthe event of the boiler not being in operationduring frost conditions.

3 The importance of servicing the boiler to ensuresafe and efficient operation. This should normallyonly be required once a year.

4 The type of fuel used.

5 That any servicing or replacement of parts mustonly be carried out by a suitably qualified engineer.

3 Ensure that all water/fuel system connections andfittings are sound. Remake any joints and check thetightness of any fittings that may be leaking.

If the boiler is used on a sealed central heatingsystem, check the system pressure, check theoperation of the pressure relief valve and check theexpansion vessel air charge. See Section 5.6.

Refill, vent and re-pressurise the system asnecessary. See Section 5.11

4 Check that any ventilation openings are adequateand are clear. See Section 4.7.

5 Remove any sludge/water from the fuel tank byopening the sludge valve at the lower end of the tank.

6 With the fuel supply valve closed, clean/replace thefilter element and clean the filter bowl.

7 Flexible fuel supply pipes should be inspectedannually when the boiler is serviced and replacedevery two years. If in doubt replace the pipes.

Warning: Before servicing, set the boiler On/Offswitch to Off, isolate the electricity supply and closethe fuel supply valve. Allow the boiler to cool.The data label on the inside of the case side panel willindicate the fuel used and the nozzle fitted.

To ensure efficient operation of the boiler it isrecommended that it is checked and serviced asnecessary at regular intervals. The frequency ofservicing will depend upon the particular installationconditions and usage, but in general once per yearshould be adequate.

Servicing and replacement of parts must only becarried out by a suitably qualified engineer.

Important: Details of every service should beentered in the Service Log, in the Boiler Handbook.This information may be required to validate theGrant extended warranty.

IMPORTANT

Before starting any work on the boiler, or fuel supplyplease read the health and safety information given inSection 12 on page 47.

1 Check the flue terminal and ensure it is not blockedor damaged.

2 Run the boiler and check the operation of itscontrols.

7 - INFORMATION FOR THE USER

8 - BOILER SERVICING

6 Ensure that the boiler controls and room thermostat(if fitted) are set to the User's requirements.

7 If the boiler is used on a sealed heating system, tellthe user the system pressure and show them theposition of the safety valve discharge pipe.

8 Show the User how to reset the overheat thermostatand how to restart the boiler if it goes to 'Lock-out'.

Leave this Instruction manual with the User.

Ensure the User information pack is given to theHouseholder.



Dismantling prior to servicing8.2

Cleaning the boiler8.3

1 Open the door (Kitchen models) or pull off thefront panel (Utility models).

2 On System models, carefully lift up and remove theexpansion vessel from the front of the boiler.Place the vessel on the floor taking care not tostrain the flexible pipe.

3 Disconnect the flexible air tube from the burner.

4 Remove the burner fixing nut (top of mountingflange) and withdraw the burner.If required, disconnect the flexible oil pipe(s), usea suitable container to prevent any oil spillage.

Note: If two flexible pipes are connected to theburner, identify (mark if necessary) which is theinlet and return if they are to be disconnected.

1 Remove the nuts and washers securing the frontcleaning door and withdraw the door. Take care - itis heavy.

2 Remove the baffles as shown in Fig. 24, 25 or 26.

3 Remove all deposits from the baffle plates and allthe boiler internal surfaces using a stiff brush andscraper if necessary.

4 Check the condition of the flue, clean as necessary.

5 Check the condition of the front cleaning door seal,replace if necessary.

6 Replace the baffles, ensuring they are correctlyfitted. See Fig. 24, 25 or 26.

7 Pull out the spiral turbulators from the heatexchanger tubes. See Fig. 26.Clean the turbulators using a stiff brushTest the heat exchanger condensate drain by pouringwater into one of the lower tubes and observe whetherthe water discharges from the 22 mm condensateoutlet. Replace the turbulators.

8 Replace the front cleaning door, ensuring the sealis in good condition and secure it in position withthe nuts and washers previously removed. Tightento form a seal.

9 Remove the condensate trap and check that it is notblocked and is operating correctly, i.e. the float isfree to move. Clean the trap and float as required.

10 Check that the boiler condensate outlet isunobstructed. Clean if necessary.

IMPORTANT: The condensate trap and condensateoutlet must be checked on every service and cleaned asnecessary.

Fig. 24 - 15/26 baffles

Fig. 25 - 26/36 and 36/46 baffles

Rightbaffles

Leftbaffles

Top set

Bottom set


Fig. 27

4 ± 0.3 mm

3 to 3.5 mm

Clamp screw

Cleaning the burner8.4


Fig. 26 - 46/58 and 58/70 baffles and turbulators (all models)

15/26, 26/36, 36/46 models - See Section 11.1

1 Combustion head - Loosen the two screwssecuring the combustion head and withdraw thehead. Clean and refit the combustion head.

2 Inspect the ignition electrodes - Remove thecombustion head.

Loosen the electrode clamp screw and withdrawthe electrode assembly. Wipe clean and check forany cracks in the ceramic insulation. Replace ifnecessary.

Check the electrode settings

Electrode tips approximately 4 mm apart and 3 to3.5 mm in front of the nozzle, see Fig 26.

3 Nozzle - The nozzle should be replaced on anannual service - Check that the nozzle size and typeare correct, refer to table in Section 3.3 and boilerdata label.

With the combustion head removed, loosen theelectrode assembly clamp screw and slide theelectrodes away from the nozzle.

Do NOT attempt to clean the nozzle.

Remove the nozzle using a good fitting spanner(16 mm). The use of an ill-fitting spanner willdamage the nozzle and could lead to an incorrectflame pattern. Always check the electrodesettings after replacing the nozzle, see Fig. 27.

46/58 or 58/70 models - See Section 11.2 and Fig. 28

1 Combustion head - Loosen the two screwssecuring the combustion head (NOT the screws inthe slotted ring, Fig. 30) and withdraw the head.Clean and refit the combustion head.

2 Inspect the ignition electrodes - Remove thecombustion head.

Loosen the electrode clamp screw, disconnect theleads and withdraw the electrode assembly. Wipeclean and check for any cracks in the ceramicinsulation. Replace if necessary.

3 Check the electrode and diffuser settings - Fig. 29

To adjust the diffuser disc: Loosen the diffuser clampscrew and slide the disc along the nozzle holder toachieve the gap 'A' in Fig. 29, tighten the screw.

To adjust the electrodes: Loosen the electrodeclamp screw and move the electrode unit to achievethe gap 'B' in Fig. 29, tighten the screw.

IMPORTANT: The electrode settings given aboveMUST be observed

58/70 shown

Top baffle Bottom baffle

IMPORTANT:The ends of theturbulators mustbe vertical

Position in vertical plane



Fig. 28

Combustionhead

Combustion headfixing screw

Electrode clampscrew

Electrodeleads

Nozzleholder

Diffuser clampscrew

Burnerflange

Fig. 29

Fig. 30

0

Screw

Slotted ring

Screw Combustionhead

Combustionhead fixingscrew

A

BElectrode clamp screw

5.75 0-0.2

3+0.50

Diffuser clamp screw

4.0 +0.5

7.5 +0.7- 0.5

_B

ADiffuser disc

4 The combustion head position is adjustable on the46/58 and 58/70 burners. Check that it is fullyclosed (position 0), or the 4th line if the 58/70 hasbeen set to maximum output (70 kW).

To adjust the head setting, refer to Fig. 30 andproceed as follows: Loosen the two screws in theslotted ring - NOT the two fixing screws, and turnthe blast tube until '0' lines up with the edge of theslotted ring. Tighten the two screws.

All models

1 Photocell - The photocell is a push-fit in the burnerbody. Carefully pull out the photocell to clean.

2 Burner fan - With the air intake grille or spigotremoved, remove the screws securing the fanhousing cover (R/H side of burner) and remove thecover. Inspect the fan and housing and clean asnecessary. Replace the cover.

3 Pump filter - With the burner cover removed,remove the four screws securing the pump endcover. Remove the filter and wash in kerosene.Replace the filter and end cover, ensure the 'O' ringis in position.

Re-assemble in reverse order.

To ensure safe and efficient operation of the boilerit is important that re-commissioning is carried out,especially combustion checks (CO

2 level, flue gas

temperature and smoke number) after the boilerhas been serviced.

Refer to the Commissioning instructions starting onpage 34.


9 - WIRING DIAGRAMS

Fig. 31

Control panel wiring diagram - Kitchen models9.1

Control panel wiring diagram - Kitchen System models9.2

Fig. 32

Colour code: Br - Brown, R - Red, Bl - Blue, Y - Yellow, G/Y - Green/Yellow, Blk - Black

1 2 3 4 5 6 7 8 9 10 11 12

L N E E N LHWON

HWOFF CH BOILER

FEED

1 2 3 4 5 6

1 C C 2

ControlThermostat

LimitThermostat

Heating"ON"Neon

(Green)On/OffSwitch

Chassis Earth ToMain Casing

N L CHOFF

CHON

HWOFF

HWON

Optional:Grant Electronic

7-day Plug-in Programmer

6-way Plug andSocket Connector

L

E

N

Burner

Mains Supply:Use 2 pole isolatorwith power "ON" indicator

E

N

L

G/Y

Bl

Br

G/YBl

Br

R

R R

R

R

Br

G/Y

G/Y

R R

R

Bl

Bl

Y

R

Bl

Bl

Br

Br Bl YBrR

G/Y

G/Y

4B

5B1A

2A

Blk

BurnerLock-out

Neon (Red)

Mains "ON"Neon

(Green)Overheat

Thermostat1 2 3 4 5 6

Neon(Green)

Note: Remove both linksif plug-in programmer is fitted


9 - WIRING DIAGRAMS

Utility boiler control panel wiring diagram9.3

Fig. 33 - Utility boiler

Fig. 34 - Utility System boiler

Utility System boiler control panel wiring diagram9.4


Fig. 36

Kitchen models with Honeywell S Plan (HW & CH controlled by two valves)

Typical control system wiring diagram (Kitchen models)9.6

9 - WIRING DIAGRAMS

Fig. 35

Utility models with Honeywell Y Plan (HW controlled by mid position valve)

Typical control system wiring diagrams (Utility and Utility System models)9.5


10 - FAULT FINDING

Burner fault finding10.1

Mo

tor/

pu

mp

se

ize

d

or

tig

ht

Re

pla

ce

mo

tor

ca

pa

cito

r

Bu

rne

r

mo

tor

run

s

Check

L&

N

tocontr

ol

box

Ch

eck

bo

iler

co

ntr

ols

Moto

rgiv

es

50

Volts

tow

hite

wire

*

Re

pla

ce

bu

rne

r

mo

tor

Re

pa

ir

or

rep

lace

mo

tor/

pu

mp

Lo

cko

ut

aft

er

12

se

c

pu

rge

Lo

cko

ut

with

in

1se

co

nd

Re

pla

ce

so

len

oid

co

il

Co

ilo

f

so

len

oid

so

un

d**

Re

pa

iro

r

rep

lace

oil

pu

mp

Wa

sh

ing

pre

ssu

re

1to

2b

ar

Ph

oto

ce

ll

so

un

d**

*

Ifb

ala

nce

dflu

e,

rem

ove

air

tub

e

an

dre

test

Re

se

al

ba

lan

ce

dflu

e

or

rep

ositio

nflu

e

Re

pla

ce

ph

oto

ce

ll

Drive

co

up

ling

bro

ke

n

Pu

mp

pro

du

ce

s

pre

ssu

re

Re

pla

ce

no

zzle

Conta

min

ate

d

fue

lo

r

filte

r

Co

mb

ustio

n

air

se

t

Fla

me

off

an

d

relig

hts

Bo

iler

or

flu

e

blo

cke

d

Co

mb

ustio

n

he

ad

se

t

YE

SN

O

YE

S

YE

S

YE

SY

ES

YE

S

YE

SY

ES

YE

S

YE

SY

ES

YE

S

YE

SY

ES

NO

YE

S

NO

NO

NO

Ch

eck

an

d

se

tth

e

ele

ctr

od

es

Re

pla

ce

the

co

ntr

olb

ox

Ign

itio

n

sp

ark

pro

ve

d

NO

NO

NO

NO

NO

OK

NO

NO

NO

NO

So

len

oid

va

lve

op

era

tin

g

Re

pla

ce

co

ntr

ol

bo

x

Ch

eck

oil

pre

ssu

re

reg

ula

tor

Re

pla

ce

co

il

an

d/o

r

ste

mva

lve

No

zzle

ato

mis

ing

fue

l

NO

YE

SN

ON

O

No

tes

* ** ***

Mo

tor

wh

ite

wire

retu

rns

50

-5

3V

AC

toco

ntr

olb

ox.

Te

st

so

len

oid

co

ilfo

rco

ntin

uity

or

10

0o

hm

s.

Te

st

ph

oto

ce

llb

yd

isco

nn

ectin

git

inco

ntr

olb

ox.

Ifb

urn

er

fire

sa

nd

the

ng

oe

sto

locko

ut,

ph

oto

ce

llsh

ou

ldb

ere

pla

ce

d.

Itis

be

st

tore

pla

ce

the

ph

oto

ce

llif

itis

su

sp

ect.

Bu

rne

rso

nb

ala

nce

dflu

esyste

ms

ca

nre

circu

late

flu

ep

rod

ucts

ca

usin

gb

urn

er

recyclin

g.

Ifth

ish

ap

pe

ns,

ch

eck

flu

ep

ositio

na

nd

se

alin

g.


10 - FAULT FINDING

Warning: Always isolate the electricity supply to the boiler before working on the boiler.

Ensure that an adequate supply of fuel is available and that the fuel supply valveis open.Check the condition of the fuel filter, clean if necessary.Ensure fuel supply is reaching burner and vent pump.

Ensure electricity supply to the boiler is switched on and that all controls are callingfor heat.Ensure that the overheat thermostat has not tripped, reset if necessary.Check that a mains supply is present at the burner terminal block. If not, check theboiler and overheat thermostat.

Press the reset button on the burner control box if it is lit.Refer to burner fault finding flow diagram.

If the flame is unstable, check the combustion settings.Refer to burner fault finding flow diagram.

Insufficient air supply - check the air damper setting and the condition of the fan.Check room ventilation is adequate, see Section 4.6.Check the nozzle size and type.Fuel pressure may be too high - check and adjust.

Insufficient air supply - check the air damper setting and the condition of the fan.Check room ventilation is adequate, see Section 4.6.Check the nozzle size and type.

Insufficient air supply - check the air damper setting and the condition of the fan.Check room ventilation is adequate, see Section 4.6.Check the nozzle size and type.Fuel pressure may be too low - check and adjust.Insufficient draught - clean boiler heat exchanger and check condition of flue.

Undersize nozzle and/or low fuel pressure.Check condition of boiler heat exchanger and clean if necessary.Check the boiler thermostat.Check the combustion settings.Check the condition of the fuel filter.

Faulty boiler thermostat.

Check the condition of the chimney, ensure it is not blocked and is high enoughto produce the required draught.Check that there is an adequate air supply near the burner and that a kitchen fanis not drawing products out of the burner.

Check all fuel line connections, remake as necessary.

Check boiler cleaning cover and seal are correctly fitted.Check burner is correctly fitted onto flange.Check flue is correctly sealed into flue outlet of boiler.Check the condensate pipe and trap are operating correctly.

Faults Remedies

Boiler will not start

1 No fuel supply.

2 No electricity supply.

3 Burner not starting - fuel andelectricity supplies present.

4 Burner lights but goes to 'lock-out'.

Boiler works but:-

5 Visible smoke from flue or highsmoke number.

6 Burner pulsates.

7 Flame slow to stabilise during start up.

8 Water temperature low.

9 Boiler operating on overheatthermostat.

10 Fumes and puffing during starting(conventional flue).

11 Oil odours.

12 Combustion fumes smell.

Boiler fault finding10.2


11 - BURNER SPARE PARTS

Riello RDB1, 2, 2.2 burner - exploded view11.1

1 Not applicable - -2 Flange 3005786 RBS1193 Combustion head T1 - 15, 20 3002507 RBS1463 Combustion head T2 - 15/26 3002423 RBS1473 Combustion head T3 - 26/36 3002447 RBS1443 Combustion head T5 - 36/46 3002533 RBS1504 Electrode assembly 3007513 RBS1085 Electrode bracket 3006552 RBS296 Nozzle holder 3008642 RBS1117 Collar 3008643 RBS1128 High voltage lead 3008794 RBS1299 Air damper assembly 3008647 RBS11610 Fan - 15/26 3005708 RBS3910 Fan - 26/36 3008645 RBS14210 Fan - 36/46 3005788 RBS15111 Photocell 3008646 RBS11512 Capacitor 4.5 µF 3002837 RBS14913 Seal kit 3008878 RBS140

KeyNo.

Description RielloPart No.

GrantPart No.

KeyNo.


GrantPart No.

14 Needle valve 3007582 RBS10915 Regulator 3008651 RBS12016 Pump seal 3000439 RBS1417 Pump 3008654 RBS10118 'O' ring 3007162 RBS0819 Filter - 'O' ring 3008653 RBS12220 Connector 3003602 RBS3521 Flexible pipe 3007672 RBS3622 Tube 3008644 RBS11323 Pressure gauge connector 3008876 RBS13824 Drive coupling 3000443 RBS1625 Solenoid 3008648 RBS11726 Motor RBS102 3002836 RBS10227 Cover 3008649 RBS11828 Control box assembly 3008652 RBS10329 Solenoid lead 3008851 RBS13930 Cover 3008879 RBS14131 Air tube spigot 3062774 RBS143

Burner head identification


11 - BURNER SPARE PARTS

Riello RDB3.2 burner - exploded view11.2

1 Flange 3008637 RBS1532 Combustion head 3002572 RBS1633 Diffuser disc assembly RBS1544 Nozzle holder 3002570 RBS1645 High voltage lead 3008794 RBS1296 Collar 3008957 RBS1657 Seal kit 3008963 RBS1568 Air damper assembly 3008839 RBS1669 Insulation 3008958 RBS15710 Fan 3005799 RBS16211 Photocell 3008646 RBS11512 Cover 3008962 RBS16813 Electrode 3020121 RBS15814 Capacitor 5 µF 3008960 RBS16715 Connector 3003602 RBS35

KeyNo.


GrantPart No.

KeyNo.


GrantPart No.

16 Flexible pipe 3005720 RBS3617 Motor 3008964 RBS15918 Pressure gauge connector 3008876 RBS13819 Tube 3008961 RBS16020 Drive coupling 3000443 RBS1621 Solenoid 3008648 RBS11722 Solenoid lead 3008851 RBS13923 Pump 3008654 RBS10124 Pump seal 3000439 RBS1425 Filter - 'O' ring 3008653 RBS12226 Regulator 3008651 RBS12027 Needle valve 3007582 RBS10928 Control box assembly 3008652 RBS10329 Cover 3008649 RBS118


12 - HEALTH AND SAFETY INFORMATION

Under the Consumer Protection Act 1987 and Section 6 of the Health & Safety at Work Act 1974, we are required toprovide information on substances hazardous to health (COSHH Regulations 1988).Adhesives, sealants and paints used in the manufacture of the product are cured and present no known hazards whenused in the manner for which they are intended.The following other materials are present in the product:

Insulation materials

Material Types: Ceramic fibre board, mineral wool.

Description: Rigid board, slabs, sleeves, gaskets, ropes.

Known Hazards: May cause temporary irritation or rash to skin. High dust levels may irritate eyes and upperrespiratory system.

Precautions: Avoid unnecessary or rough handling, or harsh abrasion of boards. Normal handling and use ofmaterial should not produce high dust levels.Avoid inhalation, and contact with skin and 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 water. If symptoms persist, seekimmediate medical advice.Skin - If irritation occurs, wash under running water before washing with soap and water.Inhalation - Remove to fresh air, drink water to clear throat and blow nose to remove dust/fibres.Ingestion - Drink plenty of water.

Sealants

Material Types: Silicone elastomer.

Description: Sealant and adhesive.

Known Hazards: Irritation to eyes.

Precautions: Avoid inhalation of vapour, contact with eyes and prolonged or repeated contact with skin.After handling always follow normal good hygiene practices.

Protection: Use eye protection. Rubber or plastic gloves should be worn where repeated contact occurs and aface mask worn when working in confined spaces.

First Aid: Eyes - Flush eyes with water for 15 minutes. Seek immediate medical attention.Skin - Wipe off and wash with soap and water.Inhalation - Remove to fresh air.

Kerosene and Gas oil fuels (Mineral oils)

Known Hazards: The effect of mineral oils on the skin vary according to the duration of exposure and the type of oil.The lighter fractions remove the protective grease naturally present on the skin, leaving it dry, liableto crack and more prone to damage by cuts, abrasions and irritant chemicals.Skin rashes (Oil acne) most often on arms, but also on any part of the body in contact with oil oroily clothing.Contact with fuel oils can cause dermatitis.

Precautions: Avoid as far as possible any skin contact with mineral oil or with clothing contaminated withmineral oil.The use of a lanolin-based barrier cream is recommended, in conjunction with regular washing withsoap and rinsing with water to ensure all oil is removed from the skin.Take care to prevent clothing, especially underwear, from becoming contaminated with oil.Do not put oily rags or tools in pockets, especially trouser pockets.Have first-aid treatment at once for an injury, however slight.Do not inhale any vapours from mineral oils.

We declare that the Grant Vortex range of Oil Boilers equipped with Riello RDB burners approved toEN 267: 1991 satisfy the requirements of the following European Directives:-

1. 89/336/EEC - Electromagnetic Compatibility DirectiveReferred to the generic standards EN 55014: 1993, EN 50082: 1: 1992

2. 73/23/EEC - Electrical Equipment Safety Regulations DirectiveReferred to the generic standard NO: 3260: The Electrical Equipment (Safety) Regulations: 1994

3. 92/42/EEC - Hot Water Boiler Efficiency DirectiveReferred to the generic standard The Boiler (Efficiency) (Amendment) Regulations 1994(SI 1994/3083)

Complies with the EC Low voltage,Electromagnetic compatibility andBoiler efficiency Directives

89/336/EEC73/23/EEC92/42/EEC

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

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

© Grant Engineering (UK) Limited 2006. No part of this manual may be reproduced by any means without prior written consent.

Manual compiled and designed by Publications 2000 Tel: (01670) 356211 D202

Grant Engineering (UK) LimitedHopton House, Hopton Industrial Estate, Devizes, Wiltshire SN10 2EU

Telephone: (0870) 7775553 Fax: (0870) 7775559email: [email protected] website: www.grantuk.com

13 - EC DECLARATION OF CONFORMITY

Documents

Part No. DOC 37 Rev. 12 September 2006 USER, INSTALLATION