Vokèra is a licensed member of the Benchmark schemewhich aims to improve the standards of installation and commissioning of domestic hot water systems in the UK.

Installation& ServicingInstructions

THESE INSTRUCTIONSTO BE RETAINEDBY USER

Easi-Flo leWater heater

G.C. N. 52-094-10 (NG)G.C. N. 52-094-11 (LPG)

2

1 GENERAL 31.1 General warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.2 Fundamental safety rules . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 DESCRIPTION 32.1 Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.2 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.3 Water circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.4 External wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 GENERAL REQUIREMENTS 73.1 Terminal position for fan assisted appliance. . . . . . . . . . . . . 73.2 Principle components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.3 Mode of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.4 Safety devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.5 Related documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.6 Location of appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.7 Gas supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.8 Flue system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.9 Air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.10 Water pipe work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.11 Pipework. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.12 Drain cocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.13 Electrical supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.14 Timber framed buildings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 INSTALLATION 94.1 Delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.2 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.3 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.4 Preparation for mounting the appliance . . . . . . . . . . . . . . . . 94.5 Fittingtheflue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.6 Connecting the gas and water . . . . . . . . . . . . . . . . . . . . . . 124.7 Electrical connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134.8 CASING REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134.9 Emptying the water heater . . . . . . . . . . . . . . . . . . . . . . . . . 13

5 USER 145.1 Do’s and don’t’s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.2 Guarantee registration card . . . . . . . . . . . . . . . . . . . . . . . . 145.3 Benchmark log book. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.4 How does it work? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.5 Diagnostic fault indicator . . . . . . . . . . . . . . . . . . . . . . . . . . 145.6 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.7 Description of icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.8 Selecting functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.9 Before switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155.10 Lighting the appliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155.11 Temporary shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165.12 Shut down for long periods. . . . . . . . . . . . . . . . . . . . . . . . . 165.13 How to care for the appliance. . . . . . . . . . . . . . . . . . . . . . . 165.14 What if i suspect a gas leak . . . . . . . . . . . . . . . . . . . . . . . . 165.15 What if the appliance is due its annual service. . . . . . . . . . 165.16 What if i need to call an engineer . . . . . . . . . . . . . . . . . . . . 165.17 Parameters menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165.18 Reset to factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . 175.19 Reset to factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6 COMMISSIONING 186.1 Gas supply installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.2 Water pipe work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.3 Pre-operation checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.4 Initial lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.5 Checking the burner pressure . . . . . . . . . . . . . . . . . . . . . . 186.6 Setting the outlet temperature . . . . . . . . . . . . . . . . . . . . . . 186.7 Final checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.8 Instructing the user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7 SERVICING 197.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197.2 Routine annual servicing . . . . . . . . . . . . . . . . . . . . . . . . . . 197.3 Replacement of components . . . . . . . . . . . . . . . . . . . . . . . 197.4 Component removal procedure . . . . . . . . . . . . . . . . . . . . . 197.5 High limit thermostat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197.6 Flow switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197.7 Burner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207.8 Flue fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207.9 Heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8 CHECKS, ADJUSTMENTS, AND FAULT FINDING 21

8.1 Checking appliance operation . . . . . . . . . . . . . . . . . . . . . . 218.2 Appliance mode of operation . . . . . . . . . . . . . . . . . . . . . . . 218.3 Checking and adjusting burner pressure . . . . . . . . . . . . . . 218.4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218.5 External faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228.6 Electrical checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228.7 Operating faults and reset . . . . . . . . . . . . . . . . . . . . . . . . . 228.8 Faultfinding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

9 L.P.G. INSTRUCTIONS 239.1 Gas supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239.2 Gas supply installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239.3 Checking and adjusting burner pressure . . . . . . . . . . . . . . 23

10 GAS TRANSFORMATION 2310.1 Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

The following symbols are used in some parts of this booklet:

b CAUTION = actions that require special care and suitable preparation

a PROHIBITED = actions that absolutely must NOT be carried out

The Vokera Easi-Flo le water heater complies with: - Regulation (EU) 2016/426 - Electromagnetic Compatibility Directive 2014/30/EU - Low Voltage Directive 2014/35/EU - Ecodesign Directive 2009/125/CE for energy-related products - Regulation (EU) 2017/1369 Energy labelling - Delegated Regulation (EU) No. 812/2013 - Delegated Regulation (EU) No. 814/2013. 0476

3

1 GENERAL

1.1 General warnings b After having removed the packaging, check that the material

supplied is intact and complete; if this is not the case, contact Vokera Ltd. b The Easi-Flowaterheatermustbeinstalledbyqualifiedperson-

nel as detailed under any current standards and law applicable and with the instructions provided by Vokera Ltd in the manual supplied with the appliance. b The water heater must be used for the purposes it has been

expressly manufactured. Vokera Ltd declines all contractual and extra-contractual liability for damage caused to persons, animals or things, due to errors in installation, control, servicing or im-proper use. b In the event of water leaks, disconnect the water heater from the

mains power supply, close the water supply and promptly notify Vokera Ltdorotherprofessionallyqualifiedpersonnel. b If the water heater is not used for an extended period, the follow-

ing minimum operations must be completed: - move the main system switch to "off".

b Servicing must be performed on the water heater at least once a year. b This manual is an integral part of the water heater and as a con-

sequence must be kept with care. If the manual is damaged or lost, contact Vokera Ltd for another copy. b When the product reaches the end of its life it should not be

disposed of as solid urban waste but should be brought to a separated waste collection facility.

b This appliance should not be operated by children younger than 8 years, people with reduced physical, sensory or mental ca-pacities, or inexperienced people who are not familiar with the product, unless they are given close supervision or instructions

on how to use it safely and are made aware by a responsible person of the dangers its use might entail. Children must not play with the appliance. It is the user's responsibility to clean and maintain the appliance. Children should never clean or maintain it unless they are given supervision.

1.2 Fundamental safety rulesThe use of products that operate on fuel, electricity and water requires a number of fundamental safety rules to be observed, including:

a The water heater must not be used by children or invalid persons without supervision.

a Electrical devices or appliances, such as switches, household appliances, etc. must not be used if there is the smell of gas or unburned fuel. In this case: - ventilate the room by opening doors and windows; - close the fuel stopcock; - promptly contact Vokera Ltd, your gas supplier or other profes-sionallyqualifiedpersonnel.

a Do not touch the water heater when barefoot or with wet parts of the body. a No service or cleaning operations may be performed without firsthavingdisconnectedthewaterheaterfromthemainspowersupply, moving the main system switch to "off". a The safety or control devices must not be adjusted without the authorisation and written instructions from the manufacturer of the water heater.

2 DESCRIPTIONThe Vokera Easi-Flo is an instantaneous water heater, which - by design - incorporates electronic ignition, NTC temperature control and a coaxial fluethatcanberotated–horizontally–through360degreesforvarioushorizontalorverticalapplications.The Easi-Flo le can also be used with the Vokeratwinfluesystem.All installers are asked to follow the Benchmark Scheme by adhering to the Code of Practise, which can be obtained from www.centralheating.co.uk.

2.1 Structure

4

3

2

1

5

67

8

9

11

10

12

81246

62

120

400

ø60

74 74

ø100

640

1 Maximum temperature thermostat2 Cooled burner3 NTC sensor4 Fan5 Exhaustflueduct6 Air pressure switch7 Pressure/depression8 Exchanger9 Ignition/detection electrode10 Burner thermostat11 Gas valve12 Waterflowswitch

4

2.2 Technical dataDESCRIPTION Easi-Flo Units

Nominal heat input 30.00 kW25,800 kcal/h

Nominal heat output27,60 kW

23.736 kcal/h

Reduced heat input 10.50 kW9,030 kcal/h

Reduced heat output9,89 kW

8.506 kcal/hCategory II2H3PDestination country GB - IE

Configurationtype B22-B52;C12-C12x;C32-C32x;C42-C42x;C52-C52x;C62-C62x;C82-C82x;C92-C92x

Gas characteristics

Lower heat outputG20 34,02

MJ/m³SG31 88

Lower Wobbe index (15°C 1013 mbar)G20 45,67

MJ/m³SG31 70,69

Nominal supply pressureG20 20

mbarG31 37

MaximumgasflowrateinDHWmodeG20 3,17 Sm³/hG31 2,33 kg/h

Maximum DHW pressureG20 15,20

mbarG31 35,30

ØmainburnernozzleG20 0,85

mmG31 0,52

Fluegasmassflowrate(max/min)G20 20,887 - 12,733

g/sG31 20,664 - 12,006

Nozzles 28 n.Ø gas connection 3/4"Concentric flue gas outlet pipesDiameter 60/100 mmMaximum length 2,6 mLoss due to 45°/90° bend 1/1,5 mWall hole 105 mmSeparate flue gas outlet pipesDiameter 80 mmMaximum length 6+6 mLoss due to 45°/90° bend 1,2/1,7 m

Flue gas temperature (max/min)G20 135-72

°CG31 137-71

Minimum pressure 0,2 barNominal pressure 2 barMaximum pressure 10 barDHWminimumflowrate 2 l/minQuantityofhotwaterwithΔt30°C 13,2 l/minØ water connections 1/2"DHW temperature selection range 36-65 °CFlow regulator 12 l/minTotal electrical power 41 WInternal fuse 2 AExternal fuse 3 APower supply voltage 230/50 V/HzProtection rating IPX4DAppliance dimensionsHeight 640 mmWidth 400 mmDepth 246 mmNet weight 21 kgClearancesTop 150mmfromcasingor25mmaboveflueelbow

(whichever is applicable)Bottom 150 mmSides 50 mmFront 600 mmConnectionsCold water 15 (compression) mmHot water 15 (compression) mmGas 15 (copper) mm

5

Parameter Symbol Value UnitWaterheatingenergyefficiencyclass - A -Declaredloadprofile - XL -Waterheatingenergyefficiency ηwh 82,0 %Daily fuel consumption Qfuel 24,225 kWhAnnual fuel consumption AFC 18 GJDaily electricity consumption Qelec 0,082 kWhAnnual electricity consumption AEC 18 kWhSound power level, indoors LWA 51 dB(A)Emissions of nitrogen oxides NOx 40 mg/kWh

2.3 Water circuit

outlet hot water inlet cold water

Gas

1 Maximum temperature thermostat2 By-pass3 NTC sensor4 Exchanger5 Cooled burner6 Gas valve7 Flow regulator8 Flow switch9 Filter

UAC EAF

3

2

1 87

6

5

4

9

6

2.4 External wiringTheappliancecomeswithafactoryfittedcablethatshouldbeconnectedtoasuitablefusedisolatororplug.Ifthisisunsuitableandadirectcon-nection to the appliance is required, it must be connected to the appliance as shown in the following diagram. For further advice on the electrical connection, please contact Vokera technical on 0844 391 0999.

NOTE: L-N CONNECTION IS ADVISABLE

E.A./R.

X2X1

X4

TR2

X9 X8

X7CN1

F1=2AX5

X6

X3 TR1IWH02 VG

2 134

MOD

pk

OPE OPE

3 421

4 531 2

bl

V

br br bl

X2

114

gygy bk bk ww gy (O

UT)

bl (+

)or

(-)

r r pu pu

MOD

T.B. F.L.

-t°

S.S.

PAD

or (-

)gy

(OU

T)bl

(+)

1 3

T.L.

X4

2 1

X1

LN230 V

F= 3.15A

M5

brbl

blbr

230 Vaux

IWH02 Control oardCN1-X1-X9 ConnectorsTR1 TransformerTR2 Ignition transformerF External fuse 3.15AF1 Fuse 2AE.A./R. Detection/ignition electrodeM5 Terminal board for external connections: 230VV FanVG Gas valveOPE Gas valve operatorMOD ModulatorT.B. Burner thermostatT.L. High limit thermostat

PAD Analogue differential pressure switchS.S. Domestic hot water circuit temperature sensor (NTC)F.L. Domestichotwaterflowswitch pu violetr redbk blackgy greypk pinkbl bluebr brownw whiteor orange

7

3 GENERAL REQUIREMENTS

3.1 Terminal position for fan assisted appliance Key Location Minimum distance A Below an opening (window, air-brick, etc.) 300 mm B Above an opening (window, air-brick, etc.) 300 mm C To the side of an opening (window, air-brick, etc.) 300 mm D Below gutter, drain-pipe, etc. 25 mm E Below eaves 25 mm F Below balcony, car-port roof, etc. 25 mm G Tothesideofasoil/drain-pipe,etc. 25mm(60mmfor80/125-5”flue) H Frominternal/externalcorner 25mm(60mmfor80/125-5”flue) I Above ground, roof, or balcony level 300 mm J From a surface or boundary facing the terminal 600 mm K From a terminal facing a terminal 1200 mm L From an opening in the car-port into the building 1200 mm M Vertically from a terminal on the same wall 1500 mm N Horizontallyfromaterminalonthesamewall 300mm P From a structure to the side of the vertical terminal 300 mm Q Fromthetopoftheverticalterminaltotheroofflashing Asdeterminedbythefixedcollar of the vertical terminal R To the side of a boundary 300 mm S To the side of an opening or window on a pitched roof 600 mm T Below an opening or window on a pitched roof 2000 mm V From a vertical terminal to an adjacent opening (window, air-brick, etc.) (call Vokera technical for advice) W From a vertical terminal to an adjacent vertical terminal 300 mm (only if both terminals are the same height)

3.2 Principle components - A fully integrated electronic control board featuring electronic temperature control, self diagnostic fault indicator, continuous gas modulation. - Electronicignitionwithflamesupervision. - Fan. - Differential air pressure switch. - Two-stage gas valve.

3.3 Mode of operationWhenthereisarequestforhotwaterviaahotwateroutletortap,thewaterflowswitchsenseswatermovementtherebyenergizingthefan,thefan proves the differential air pressure switch which in-turn allows an ignition sequence to begin.Ignitionissensedbytheelectroniccircuitrytoensureflamestabilityattheburner.Oncesuccessfulignitionhasbeenachieved,theelectroniccircuitry increases the gas rate to maximum or modulates to suit the set requirement.When the appliance reaches the desired temperature the burner will modulate to maintain the desired temperature. Should the temperature continue to increase, the burner will shut off when the maximum operating temperature is attained.Whentherequestforhotwaterhasbeensatisfiedtheappliancefanmaycontinuetooperatetodissipateanyresidualheatwithintheappliance.

3.4 Safety devicesWhen the appliance is in use, safe operation is ensured by: - a high limit thermostat that over-rides the temperature control circuit to prevent or interrupt the operation of the burner; - adifferentialairpressureswitchthatcheckstheoperationofthefanandfluetherebyallowingsafeoperationoftheburner; - aflamesupervisiondevicethatwillshutoffthegassupplytotheburnerwhennoflamesignalisdetected.

8

DetailedBS 5440 Part 1 FluesBS 5440 Part 2 Flues and ventilationBS 5546 Installation of hot water supplies for domestic purposesBS 6891 Low pressure installation pipeBS 6700 Design, installation, testing and maintainence of services supplying Water for domestic use

b This appliance must be installed by a competent person in ac-cordance with the Gas-Safety (Installation & Use) Regulations.

3.5 Related documentsThe installation of this water heater must be in accordance with the rel-evant requirements of the Gas-Safety (Installation & Use) Regulations, theWatersupply(waterfittings)Regulations,theWaterByelawsScot-land, the Building Standards (Scotland) Regulation and Building Stan-dards (Northern Ireland) Regulations. It should be in accordance also with any relevant requirements of the local authority and the relevant recommendations of the following British Standard Codes of Practice.

3.6 Location of applianceThe appliance may be installed in any room or internal space, although particular attention is drawn to the requirements of the current I.E.E. wiring regulations, and in Scotland, the electrical provisions of the Building Regulations, with respect to the installation of the appliance in a room or internal space containing a bath or shower.When an appliance is installed in a room or internal space containing a bath or shower, the appliance or any control pertaining to it must not be within reach of a person using the bath or shower.The location chosen for the appliance must permit the provision of a safeandsatisfactoryflueandtermination.Thelocationmustalsoper-mit an adequate air supply for combustion purposes and an adequate space for servicing and air circulation around the appliance. Where the installation of the appliance will be in an unusual location special procedures may be necessary, BS 6798 gives detailed guidance on this aspect. A compartment used to enclose the appliance must be de-signedandconstructedspecificallyforthispurpose.Anexistingcom-partment/cupboardmaybeutilisedprovidedthatitismodifiedtosuit.Details of essential features of compartment/cupboard design, includ-ing airing cupboard installations, are given in BS 6798. This appliance is not suitable for external installation.

3.7 Gas supplyThegasmeter–assuppliedbythegassupplier–mustbecheckedtoensurethatitisofadequatesizetodealwiththemaximumratedinputofalltheappliancesthatitserves.Installationpipesmustbefittedinaccordance with BS 6891. Pipe-work from the meter to the appliance mustbeofadequatesize.Pipesofasmallersizethantheappliancegas inlet connection must not be used. The installation must be tested for soundness in accordance with BS 6891. If the gas supply serves more than one appliance, it must be ensured that an adequate supply is maintained to each appliance when they are in use at the same time.

NOTEIt is reasonable to expect a drop of 2 mbar between the inlet gas cock and the appliance test nipple.

3.8 Flue systemThe terminal should be located where the dispersal of combustion products is not impeded and with due regard for the damage and dis-coloration that may occur to building products located nearby.The terminal must not be located in a place where it is likely to cause a nuisance. In cold and/or humid weather, water vapor may condense on leaving the terminal; the effect of such pluming must be considered. If installed less than 2m above a pavement or platform to which people haveaccess (includingbalconiesor flat roofs) the terminalmustbeprotected by a guard of durablematerial. The guardmust be fittedcentrally over the terminal.

Refer to BS 5440 Part 1, when the terminal is 0,5 metres (or less) be-low plastic guttering or 1 metre (or less) below painted eaves.

3.9 Air supplyThe following notes are intended for general guidance only. This appli-anceisaroomsealed,fan-fluedwaterheater,consequentlyitdoesnotrequire a permanent air vent for combustion air supply. When installed in a cupboard or compartment, ventilation for cooling purposes is also not required.

3.10 Water pipe workDetailed recommendations are given in BS 5449 Part 1 and BS 6798. The following notes are for general guidance only.

3.11 PipeworkIt is recommended that copper tubing to BS 2871 Part 1 is used in conjunction with soldered capillary joints. Where possible pipes should have a gradient to ensure air is carried naturally to an outlet and that waterflowsnaturallytodraincocks.Pipesshouldbeinsulatedtoavoidheatlossandinparticulartoavoidthepossibilityoffreezing.Particu-lar attention should be paid to pipes passing through ventilated areas suchasunderfloors,loftspace,andvoidareas.

3.12 Drain cocksThese must be located in accessible positions to facilitate draining of the appliance and all water pipes connected to the appliance. The drain cocks must be manufactured in accordance with BS 2879.

3.13 Electrical supplyThe appliance is supplied for operation on 230V@50Hz electricalsupply; it must be protected with a 3-amp fuse. The method of connec-tion to the mains electricity supply must allow for complete isolation from the supply. The preferred method is by using a double-pole switch with a contact separation of at least 3mm. The switch must only sup-ply the appliance. Alternatively an un-switched shuttered socket with a fused 3-pin plug both complying with BS 1363 is acceptable.

3.14 Timber framed buildingsIf theappliance is tobe fitted ina timber framedbuilding, it shouldbefittedinaccordancewiththeInstituteofGasEngineerspublication(IGE/ UP/7) “Guide for Gas Installations in Timber Frame Buildings”.

9

4 INSTALLATION4.1 DeliveryThe appliance is delivered in a heavy-duty cardboard carton. Lay the cartononthefloorwiththewritingthecorrectwayup.

4.2 ContentsContained within the carton is: - the appliance; - the wall mounting bracket and stand-off brackets; - template; - an accessories pack containing the appliance service valves and

washers; - the instruction pack containing the installation & servicing instruc-

tions, user instructions and a 3-amp fuse.

4.3 UnpackingAtthetopofthecartonpullbothsidesopen–donotuseaknife–un-fold the rest of the carton from around the appliance, carefully remove all protective packaging from the appliance, and lay the accessories etc. to one side.

4.4 Preparation for mounting the applianceThe appliance should be mounted on a smooth, vertical, surface, which must be capable of supporting the full weight of the appliance. Care should be exercised when determining the position of the appli-ance with respect to hidden obstructions such as pipes, cables, etc.When the position of the appliance has been decided – using thetemplatesupplied–carefullymarkthepositionofthewall-mountingbracketandflue-hole(ifapplicable).

b Position the cartoon template and trace the two upper holes Ø 8 mm. Trace the two lower holes Ø 8 mm at a distance from the upper holes of 579 mm.

Fix the stand-off brackets (the stand-off brackets should only beusediftheflueisexitingtotherear).

b Attach the wall mounting bracket.

270

118

120

10

380

320346

ø110

ø8ø8

579

mm

MAXIMUM FLUE LENGTHSFlue system Easi-Flo UM

ConcentricHorizontal 2.60 mt

Concentric Vertical 3.60 mt

Twinflue 6 + 6 mt

4.5 Fitting the flueThetopflueoutletpermitsbothhorizontalandverticalflueapplicationsto be considered, alternatively, the Vokèra twin flue system can beutilisediflongerfluerunsarerequired.

Concentric horizontal flue (Forconcentricverticalflue,seepag.10).(Fortwinflueapplications,seepag.11).The appliance can be used with either the Vokèra 60/100mm concen-tricUni-fluesystemortheoptionalVokeratwinfluesystem.

NOTEThese instructions relate only to the Vokèra Uni-Flue 60/100mm con-centric flue system.The appliance flue outlet elbow can be rotatedthrough360ºonitsverticalaxis.Inadditionthefluemaybeextendedfromtheoutletelbowinthehorizontalplane.Areductionmustalsobemade to the maximum length (see table below) when additional bends are used.

20 20

200

Reduction for additional bendsBend Reduction in maximum flue length for each bend

45° bend 1.0 metre (60/100) mt

90° bend 1.5 metre (60/100) mt

Horizontal flue terminals and accessoriesPart no. Description Min-Max length

2359029 Horizontalfluekit 833 mm (dimension ‘X’)

2359119 Telescopicfluekit

2359069 750 mm extension 750 mm

2359079 1500 mm extension 1500 mm

2359089 Telescopic extension 350-490 mm

2359049 45º bend (pair) 220mm

2359059 90º bend N/A

529 Wall bracket (5) N/A

Using the template provided (A), mark and drill a 125mm hole for the passageofthefluepipe.Theholeshouldhavea1ºdropfromtheap-pliance to outside, to eliminate the possibility of rainwater entering the applianceviatheflue.Thefixingholes for the wall-mounting bracket should now be drilled andplugged,anappropriatetypeandquantityoffixingshouldbeusedto ensure that the bracket is mounted securely.

10

Once the bracket has been secured to the wall, mount the appliance onto the bracket.

Fitting the horizontal flue kitCarefullymeasurethedistancefromthecentreoftheapplianceflueoutlet to the face of the outside wall (dimension ‘X’). Ensure the inner (60mm) pipe is fully inserted into the outer (100mm) pipe (when the inner pipe is fully inserted, it stands proud of the outer pipe by 7.5mm). Add32mmtodimension‘X’togivetheoverallfluelength(dimension‘Y’).

Maximum lengthØ 60-100 mm (m)

Loss of load (m)45° bend 90° bend

2,6 1 1,5

NOTEThe standard horizontal flue kit (part no. 2359029) is suitable for adistance (dimension ‘Y’) of up to 865mm.The telescopic flue kit (part no. 2359119) is suitable for a distance(dimension ’Y’) of up to 600mm.Dimension ‘Y’ is measured from the end of the terminal to the end of theouter(100mm)pipe.Theinternaltrimshouldbefittedtothefluepipe before connection of the 90° bend.

Extending the flueThehorizontalfluesystemcanbeextendedusingbendsand/orexten-sions from the Uni-Flue range.

Connectthebend–suppliedwiththeterminalkit–tothetopoftheappliance using the clips, screws, & gaskets supplied. The additional bends&extensionshaveaninternalpush-fitconnection,careshouldbe taken to ensure that the correct seal is made when assembling the fluesystem.Connecttherequirednumberofflueextensionsorbends(uptothemaximumequivalentfluelength)totheflueterminalusingtheclips,screws,&gasketssupplied(seefig.a&fig.b).Theinteriortrimshouldbefittedatthispoint.NOTEWhen cutting an extension to the required length, you must ensure that the excess is cut from the plain end of the extension, and that the inner (60mm) pipe is 7.5mm longer than outer (100mm) pipe. Remove any burrs, and check that any seals are located properly.Youmustensurethattheentirefluesystemisproperlysupportedandconnected.Sealtheflueassemblytothewallusingcementorasuitablealterna-tivethatwillprovidesatisfactoryweatherproofing.Theexteriortrimcannowbefitted.

Concentric vertical flueThe appliance can be used with either the Vokèra 60/100mmconcentricUni-fluesystemortheoptionalVokeratwinfluesystem.

Maximum lengthØ 60-100 mm (m)

Loss of load (m)45° bend 90° bend

3,6 1 1,5

NOTETheseinstructionsrelateonlytotheVokèra60/100mmconcentricfluesystem.ForspecificdetailsontheinstallationoftheVokeratwinfluesystempleaserefertotheinstructionssupplied.Theverticalflueterminalcanbeconnecteddirectly to theapplianceflueoutlet.Alternatively,anextensionorbendcanbeconnectedtotheapplianceflueoutletifdesired,howeverifadditionalbendsarefitted,areductionmustbemadetothemaximumfluelength(seetablebelow).Reduction for bends

Bend Reduction in maximum flue length for each bend45° bend 1.0 metre (60/100) mt

90° bend 1.5 metre (60/100) mt

Vertical flue terminal and accessories

Part No. Description Length2359039 Verticalflueterminal 1.0 metre

531 Pitchedroofflashingplate N/A532 Flatroofflashingplate N/A

2359069 750 mm extension 750 mm2359079 1500 mm extension 1500 mm2359049 45º bend (pair) N/A2359059 90º bend N/A

529 Wall bracket (5) N/A

Usingthedimensionsgivenin"fig.C"asareference,markandcuta125mm hole in the ceiling and/or roof.

A

fig.a

fig.b

270

118

120

10

380

320346

ø110

ø8ø8

11

Fittheappropriateflashingplatetotheroofandinserttheverticalflueterminalthroughtheflashingplatefromtheoutside,ensuringthatthecollarontheflueterminalfitsovertheflashing.Thefixingholes for thewall-mountingbracketshouldnowbedrilledandplugged,an‘appropriatetypeandquantityoffixingshouldbeusedto ensure that the bracket is mounted securely. Once the bracket has been secured to the wall, mount the appliance onto the bracket.

IMPORTANTThe vertical flue terminal is 1.0metre in length and cannot be cut;therefore it may be necessary to adjust the height of the appliance to suit or use a suitable extension.Connecttheverticalflueassemblytotheappliancefluespigotusingthe 100mm clip, gasket & screws (supplied), ensuring the correct seal ismade.Thefluesupportbracket(suppliedwiththeverticalfluekit)cannowbefitted.If theverticalfluerequiresextension/soradditionalbend/s,connecttherequirednumberofflueextensionsorbends(uptothemaximumequivalentfluelength)betweentheapplianceandverticalflueassem-bly.

NOTEWhen cutting an extension to the required length, you must ensure that the excess is cut from the plain end of the extension. Remove any burrs, and check that any seals are located properly.Youmustensurethattheentirefluesystemisproperlysupportedandconnected.Twin flue systemThe Vokèra twin flue system enables greater flue distances to beachievedthanthatofaconcentricfluesystem.Itcanbeusedforhor-izontalorverticalapplications,howeverthetwinfluesystemmustbeconvertedtothededicatedconcentricfluekitfortermination.Itises-sentialthattheinstallationofthetwinfluesystembecarriedoutinstrictaccordance with these instructions

Maximum lengthØ 80 mm (m)

Loss of load (m)45° bend 90° bend

6+6 1,2 1,7

Guidance notes on twin flue installation - The fluemust have a fall back of 3º back to the appliance to al-lowanycondensate that forms in thefluesystem todrainvia thecondensate drain. Consideration must also be given to the fact that there is the possibility of a small amount of condensate dripping from the terminal.

- Ensurethattheentirefluesystemisadequatelysupported,useatleast one bracket for each extension.

- Extreme care must be taken to ensure that no debris is allowed to enterthefluesystematanytime.

- As the exhaust outlet pipe can reach very high temperatures it must be protected to prevent persons touching the hot surface.

Bend Reduction in maximum flue length for each bend45° bend 1.2 metre mt

Bend Reduction in maximum flue length for each bend90° bend 1.7 metre mt

Twin flue accessoriesPart No. Description Length

20006933 Twin adapter kit N/A

Mounting the applianceThefixingholes for thewall-mountingbracketshouldnowbedrilledandplugged,anappropriatetypeandquantityoffixingshouldbeusedto ensure that the bracket is mounted securely. Once the bracket has been secured to the wall, mount the appliance onto the bracket.

Installation of twin adaptor kit - Inserttheexhaustconnectionmanifold(A)ontotheapplianceflue

outlet. - Removetheblankingplate(locatedtotheleftoftheapplianceflueoutlet)and–usingthesamescrews–installtheairinletplate(B).

- Using the hole in the exhaust connection manifold as a guide, drill a 3mm hole in the appliance flue spigot and secure the exhaustmanifoldconnectiontothefluespigotusingthescrewprovided(C).

- Using the two holes in the air inlet plate as a guide, drill a 3mm hole in each and secure the air inlet pipe/bend using the screws provided.

Thetwinfluepipesextensionsandaccessoriescannowbeinstalledby pushing together (the plain end of each extension or bend should be pushed approximately 50mm into the female socket of the previous piece).

Horizontal termination - Thetwinfluesystemmustbeconvertedtothededicatedconcentric

fig.c

81

B

A

C8980

12

fluekitfortermination. - Thehorizontalterminalissuppliedwithabuilt-inconverterboxand

cannot be shortened. - A 130mm hole is required for the passage of the concentric terminal

through the wall. - The air inlet pipe must always be level with or below, that of the

exhaust pipe.Depending on site conditions it may be preferable to install the terminal assemblypriortofittingthetwinfluepipes.Markanddrillalevel130mmholeforthepassageofthehorizontalflueterminal.Inserttheterminalassemblyintothefluehole.Push-fitthetwinfluepipesontotheconcentrictotwinconverterboxensuring that the exhaust pipe connects to the exhaust connection on the concentric to twin converter.Ifnecessarycuttheplainends(male)ofthetwinfluepipestoallowconnection to the concentric to twin converter.NOTEBeforecuttingtwinfluepipesensureallowanceshavebeenmadeforconnection onto the previous piece and onto the concentric to twin converter.The last twin flue pipesmust be pushed 50mmonto themale spigots of the concentric to twin converter.NOTESealtheflueterminalassemblytothewallusingcementorasuitablealternativethatwillprovidesatisfactoryweatherproofing.The interiorandexteriortrimcannowbefitted.Vertical termination Thetwinfluesystemmustbeconvertedto thededicatedconcentricfluekitfortermination. - The vertical terminal is supplied with a built-in converter box and

cannot be shortened. - A 130mm hole is required for the passage of the concentric terminal

through the ceiling and/or roof.Depending on site conditions it may be preferable to install the terminal assemblypriortofittingthetwinfluepipes.Fittheappropriateflashingplatetotheroofandinserttheverticalflueterminalthroughtheflashingplatefromtheoutside,ensuringthatthecollarontheflueterminalfitsovertheflashing.Push-fitthetwinfluepipesontotheconcentrictotwinconverterensur-ing that the exhaust pipe connects to the exhaust connection on the concentric to twin converter.Ifnecessarycuttheplainends(male)ofthetwinfluepipestoallowconnection to the concentric to twin converter.

NOTE - Beforecuttingtwinfluepipesensureallowanceshavebeenmade

for connection onto the previous piece and onto the concentric to twinconverter.Thelasttwinfluepipesmustbepushed50mmontothe male spigots of the concentric to twin converter.

- Youmustensure that theentirefluesystemisproperlysupportedand connected.

- Ensurethatanyhorizontalsectionsofpipehavea3ºfalltowardstheappliancetoallowanycondensatethatformsinthefluesys-tem to drain via the condensate drain. (17mm per 1000mm = 1º).

Installation of condensate drain kitThe condensate drainkitmustbefittedwithin1metreoftheapplianceflueoutlet.It isrecommendedthatthecondensatedrainkitshouldbefittedintheverticalplane,howeveritcanbefittedhorizontallywithcare. - Fitthefirstbendtothecondensatedrainkitorexhaustconnectionmanifoldbyfirmlypushingintoposition.

- Using the two holes in the exhaust connection manifold as a guide, drill a 3 mm hole in each and secure using the screws provided.

- Connecttheairinletpipetotheairbaffleasabove. - Thetwinfluepipesextensionsandaccessoriescannowbeinstalled

by pushing together (the plain end of each extension or bend should be pushed approximately 50 mm into the female socket of the pre-vious piece).

The condensate drain trap must be connected to the drain in accor-dance with building Regulations or other rules in force.

Condensate drain kit

4.6 Connecting the gas and water

The appliance is supplied with an accessories pack that contains seal-ing washers and service valves. The service valves are of the com-pression type. When connecting pipe work to the valves, tighten the compressionendfirst,theninsertthesealingwashersbeforetighten-ing the valve to the appliance.

b It will be necessary to hold the valve with one spanner whilst tightening with another.

GASThe appliance is supplied with a 15mm service valve, connect a 15mm pipe to the inlet of the valve and tighten both nuts.

b It will be necessary to calculate the diameter of the gas supply pipe to ensure the appliance has an adequate supply of gas.

COLD INLETThe appliance is supplied with 15mm stopcock for the cold water inlet connection, connect a 15mm pipe to the inlet of the valve and tighten the nut.

HOT WATER OUTLET

13

The appliance is supplied with 15mm connector for the hot water outlet connection, connect a 15mm pipe to the outlet of the connector and tighten the nut.

4.7 Electrical connectionsTheelectricalsupplymustbeasspecified in3.13.Theappliance issupplied,pre-wiredwitha0,9metrelengthofflex,connectthewiresas follows: - connect the Brown wire to the L (Live) terminal of the plug or fused

isolator; - connect the Blue wire to the N (Neutral) terminal of the plug or fused

isolator; - connect the Green/Yellow wire to the E (Earth) terminal of the plug

or isolator; - ensure the plug or fused isolatorisfittedwitha3-ampfuse.

4.8 CASING REMOVALTo gain internal access to the appliance youmust first remove thecasing, proceed as outlined below:To remove the casing:

- disconnect the appliance from the electric power supply - remove the two screws A - pull the casing B forwards - lift the casing B upwards releasing it from the hooks at the top

B

AA

B

To open the instrument panel: - remove the screws C

- gently lower the control fascia until it rests; - store the casing and screws safely until required.Re-fit in the

reverse order. - - +

4.9

C

Emptying the water heater

To empty the water heater: - turn off the main water supply tap - open all the water taps - make sure that the taps at the lowest points of the system allow

the water heater to be completely emptied.

14

ON - OFF/RESET keyAllows the appliance to switch on and off. It also allows it to be reset in the event of a fault.

MENUAllowstheselectionstobeconfirmed,toentertheusermenuand,ifpressed for more than two seconds, to access the technical menu (in this case you will be asked to enter the password).

+ and - keysThey allow you to navigate the various functions that are available, to change the value of a parameter and to change the temperature that has been set for the domestic hot water.

5.7 Description of icons Temperature adjustment lockout Bottle feeder function

Function for choosing temperature unit of measurement General alarm

Domestic hot water pick-up Flame presence Flame lockout Enter the technical menu Flue gases fault

5.8 Selecting functionsPress the MENU (B) key.Using the "+" e "-" keys it is possible to scroll through the available functions on the display. The icon regarding the selection made, blinks together with the central segments.In the case of the wrench ( ) the central segments do not appear.

Pressing the MENU (B) key you pass to value setting mode. Either “on” or “oF” is displayed depending on the function that is currently active or inactive. To change the status of the function:

- press the "+" and "-" keys - presstheMENU(B)keytoconfirmandreturntotheselection

of the functions.

b Keeping either the "+" or "-" key pressed, the fast scrolling mode is activated.

Button lock function Allows the keyboard to be locked out. It is activated or deactivated through a combination of the keys ("+" and "-" keys pressed together for 5 seconds).When the mode is active (lockout) it is not possible to use the keybo-ard.Feeder bottle function Selecting this function makes it possible to set the maximum tempera-ture at which the water is delivered (maximum 65°C; minimum 36°C).If the function is not active,“oF " appears on the display. If the function is active, the "bottle feeder" temperature that was previously set is displayed.The maximum value that can be set is established in parameter 11 (see table of parameters).To change the set value press the MENU (B) key and with the "+" or " -" key select the desired value.

B

ThenconfirmtheselectionbypressingMENU(B)again.

5 USERYour Easi-Flo le water heater incorporates the very latest gas water heating technology, and if cared for, will give years of reliable use and efficiency.Please therefore take some time to read these instructions carefully.

b When the product reaches the end of its life it should not be disposed of as solid urban waste but should be brought to a separated waste collection facility.

5.1 Do’s and don’t’s - Do ensure that you know how to isolate the appliance in an emer-

gency - Do ensure that you are familiar with the appliance controls - Do ensure that your installer has completed the appliance log book - Do not attempt to remove the appliance casing or gain internal ac-

cess - Do not hang clothes etc. over the appliance - Do not forget to have the appliance serviced annually

5.2 Guarantee registration cardPleasetakethetimetofilloutyourguaranteeregistrationcard.Thecompleted warranty card should be posted within 30 days of installa-tion.

5.3 Benchmark log bookThe Benchmark Log Book is supplied with your appliance. This im-portant document must be completed during the installation/commis-sioning of your appliance. All Gas-Safe Registered Installers carry a Gas-Safe ID card, and have a registration number. Both should be recorded in your Benchmark Log Book. You can check your installer by visiting the Gas-Safe website. Failure to install and commission the appliance in accordance with the manufacturers instructions may in-validate the warranty. This does not affect your statutory rights .

5.4 How does it work?Your Easi-Flo water heater is an instantaneous gas water heater that operates to produce hot water whenever a hot water outlet (tap) is opened. The Easi-Flowilloperatewheneveraflowofwater,throughthe appliance is sensed. The Easi-Flo lights electronically and does not have a pilot light. In the unlikely event of a fault developing with your appliance, the supply of gas to the burner will be terminated au-tomatically.

5.5 Diagnostic fault indicatorIn the unlikely event of a fault developing, the Easi-Flo displays a unique fault indicator that helps identify where the fault lies.

5.6 Control panel

A

B

C

D

A ON - OFF/RESET keyB MENU - CONFIRM keyC + keyD - key

15

B

Function for choosing temperature unit of measurement There are two possible units of measurement: Degrees Celsius and Fahrenheit.The display shows the current unit of measurement. To change the value enter the function ( ) and use the "+" and "-" keys.ThenconfirmtheselectionbypressingMENU(B)key.

Wrench function When the wrench function is selected, the central segments of the display switch off. Pressing MENU (B) for 2 seconds you pass to the passwordentrymode(only forprofessionallyqualifiedpersonnel) toaccess the technical menu (see section "Parameters menu").

Solar The function is only active if the installation is set up to operate with a solar system.To exit the functions menu press the "+" or "-" key until “rt” (re-turn) is displayed.

Confirming with the MENU (B) key returns you to the display of the on/standby status.

B

If no action is taken, once 2 minutes have passed the appliance exits the menu and returns to the normal operation screen.

5.9 Before switching onBefore switching the appliance on, please familiarise yourself with: - how to isolate the appliance from the gas, water and electricity sup-

plies; - the appliance controls.

5.10 Lighting the appliance

b Thefirstcommissioningoftheappliancemustbecarriedoutbyqualifiedpersonnel.

The following checks and operations must be carried out: - check that the fuel shut-off and water taps of the water system

are open

set the system's master switch to "on".

The appliance is powered and is normally off.The display shows in sequence (from off to on) every 2 seconds a segment of 2 digits to compose the writing "oF" (off). When "oF" is fully present on the display, it remains on for 10 seconds, then it blinks 5 times and switches off for 5 seconds. After which the sequence for switching on the segments restarts. In this way the appliance ignores every ignition request.

- Press the ON - OFF/RESET (A) button to switch on the appli-ance.

All the icons on the display appear for 2 seconds. After which only the icons regarding the current operating mode stay on.In ON mode, the appliance is on with the possibility of producing do-mestic hot water.If there is no domestic hot water request, the water heater goes into stand-by.During this phase the display switches on in sequence (from off to on) every 2 seconds a segment to compose the writing "Sb".When "Sb" is visible on the display, it remains on for 10 seconds, then it blinks 5 times and switches off for 5 seconds. Then the activation sequence of the segments restarts.In stand-by, if the temperature measured by the domestic hot water probe is > 65°C the fan is started. When the temperature drops below 65°C the fan remains powered for another minute and then is switched off.

Domestic hot water pick-up - Open a domestic hot water tap. Once the time set in the pa-

rameter “Domestic Hot Water Waiting Time” has passed (about 0.5 seconds) the display shows the tap symbol and the delivery temperature of the hot water (rounded up in degrees).

16

- Theburnercomesone,whentheflameisdetected,thecorre-sponding symbol is shown on the display.

- The appliance will produce domestic hot water at the tempera-ture set in the parameter "Maximum setpoint of domestic hot water circuit” (see table of parameters).

- When the water tap is shut-off, the boiler switches off and pre-pares for the next start-up.

The switching on and off of the burner is managed in two modes: - absolute: burner switching off threshold at 70°C - correlated: burner switching off threshold when the setpoint of

+4°C is reached.The switching back on point is the same for both modes and is the setpoint -1°C.

CHANGING THE DOMESTIC HOT WATER SETPOINT - Pressing the "+" or "-" key it is possible to change the setpoint

for the domestic hot water. With the "+" key the value increases, with the "-" key it decreases.

If there is a fault the water heater carries out a “STOP” (see section Operating faults and reset).

5.11 Temporary shutdown

In case of temporary absences for weekends, short trips, etc.: - press the ON-OFF/RESET (A) key - turn the main system switch to “off”.

A

5.12 Shut down for long periods

If the appliance is not going to be used for a long period of time, the following operations should be carried out:

- press the ON-OFF/RESET (A) key - switch the boiler OFF at the mains power switch - shut-off the system's fuel and water taps.

b Emptythesystemifthereisariskoffreezing.

5.13 How to care for the applianceTo clean the outer casing use only a clean damp cloth. Do not use any scourers or abrasive cleaners.

5.14 What if i suspect a gas leakIf you suspect a gas leak, turn off the gas supply at the gas meter, and contact your installer or local gas supplier. If you require further advice pleasecontactyournearestVokeraoffice.

5.15 What if the appliance is due its annual service

Advice for tenants onlyYour landlord should arrange for servicing. Advice for homeowners Please contact Vokera Customer Services (0844 391 0999 (UK) or 056 7755057 (ROI) if you would prefer a Vokera service engineer or agent to service your appliance. Alternatively your local Gas-Safe registered engineer may be able to service the appliance for you.

5.16 What if i need to call an engineerIf you think your appliance may have developed fault, please contact your installer or Vokera Customer Services (0844 391 0999 (UK) or 056 7755057 (ROI) have all your details to hand including full address and postcode, relevant contact numbers, and your completed appliance log book.

5.17 Parameters menuPress the MENU (B) key for 2 seconds.The two central segments of the digits blink and together with them some displayed icons.Use the "+" or "-" key to select the wrench icon ( ). At this point the central segments switch off.

Press the MENU (B) key to enter the password (only for professionally qualifiedpersonnel)toaccessthetechnicalmenu.Press the "+" key to increase the numeric value until you reach the value of the password.

B

psw (*)

(*) password value = 18. Set the value of the password, available only forprofessionallyqualifiedpersonnel.The user can in no way access the TECHNICAL MENU.

When accessing the technical menu the number "2" is displayed. Pres-sing the "+" or "-" key it is possible to select the successive parameter:2 Burner output

17

4 Gas Type5 Flow Indicator Type6 Domestic hot water start wait time11 Domestic hot water circuit maximum setpoint20 Induced draught protection function40 Domestic hot water thermostat operation41 Displaying domestic hot water input temperature42 Displayingdomestichotwaterflowratert Exiting the menurs Resetting factory settingsPressingtheMENU(B)keyconfirmsthevaluesset.

To exit the TECHNICAL MENU press the "+" or "-" key until “rt” (return) is displayed. Pressing the MENU (B) key to return to the USER MENU.Pressing the ON-OFF/RESET (A) key you pass to the OFF state.

If no action is taken, once 2 minutes have passed the appliance exits the menu and returns to the normal operation screen.

Table of parameters

Nr.PAR PARAMETER DESCRIPTION

UNIT OF MEA-

SURE-MENT

MIN MAX VALUES FACTORY SETTING

2 Selecting water heater output/capacity l/min111317

111317

4 Selecting methane/LPG 0 (METHANE)1 (LPG)

0 (methane models)1 (LPG models)

5 Selectingflowswitch/flowindicator 0 (FLOW SWITCH)1 (FLOW INDICATOR) 0

6 Domestic hot water start wait time s 0,5 10 (steps of 0.5s) 0.5s

11 maximum setpoint of domestic hot water circuit °C 36 65 65

20 Induced draught protection function 0 1 0 (NONE)1 (ACTIVE) 1

40 Type of domestic hot water thermostat operation 0 (ABSOLUTE)1 (CORRELATED) 0

41 Displaying domestic hot water input temperature °C

42 Displayingdomestichotwaterflowrate NOT USED

rt Exiting the menu

rs Resetting factory settings

5.18 Reset to factory settingsFrom the parameters menu, selecting “rs” allows you to reset the bo-ard parameters to the factory settings (Reset to factory settings).Pressing the MENU (B) key displays two underscores. Press the "-" key until the two underscores shift up. Press the "+" key to return to factory settings.If you press the MENU (B) key instead of the "+" key the operation is annulled and you return to the previous menu.

To exit the TECHNICAL MENU press the "+" or "-" key until “rt” (return) is displayed, at this point pressing the MENU (B) key returns you to the USER MENU.Pressing the ON-OFF/RESET (A) key you pass to the OFF state.

If no action is taken, once 2 minutes have passed the appliance exits the menu and returns to the normal operation screen.

b If you are replacing the electronic board it is necessary to set the parameters 2 (11-13-17) and 4 (methane - lpg) depending on the type of water heater used.

5.19 Reset to factory settingsFrom the parameters menu, selecting “rs” allows you to reset the bo-ard parameters to the factory settings (Reset to factory settings).Pressing the MENU (B) key displays two underscores. Press the "-" key until the two underscores shift up. Press the "+" key to return to factory settings.If you press the MENU (B) key instead of the "+" key the operation is annulled and you return to the previous menu.

To exit the TECHNICAL MENU press the "+" or "-" key until “rt” (return) is displayed, at this point pressing the MENU (B) key returns you to the USER MENU.Pressing the ON-OFF/RESET (A) key you pass to the OFF state.

If no action is taken, once 2 minutes have passed the appliance exits the menu and returns to the normal operation screen.

b If you are replacing the electronic board it is necessary to set the parameters 2 (11-13-17) and 4 (methane - lpg) depending on the type of water heater used.

18

6 COMMISSIONING

6.1 Gas supply installationInspect the entire installation including the gas meter, test for sound-nessandpurge.RefertoBS6891forspecificinstruction.

6.2 Water pipe workThewaterpipeworkshallbeflushedandtestedinaccordancewiththeWaterSupply(waterfittings)Regulations(WaterByelawsScotland).

6.3 Pre-operation checksBefore attempting the initial lighting of the appliance, the following checks must be carried out: - ensure all gas service valves from the meter to the appliance are

open and the supply pipe has been properly purged; - ensure the proper electrical checks have been carried out (see 8.6

ELECTRICAL CHECKS), particularly continuity, polarity and resis-tance to earth;

- ensure the3amp fuse–suppliedwith theappliance–hasbeenfitted;

- ensuretheapplianceandassociatedpipeworkhasbeenfilledandvented;

- ensurethefluesystemhasbeenfittedproperlyandinaccordancewith the instructions;

- ensure all appliance service valves are open.

6.4 Initial lightingEnsure the electrical supply to the appliance is switched on. Turn the selector knob to the ‘on’ position. Open a hot water outlet (preferably a bathtap)andensuretheflowrateexceeds2litresperminute.The appliance will now go through an ignition sequence as described in 3.3 MODE OF OPERATION. Should the appliance fail to ignite, re-fer to 6.3 PRE-OPERATION CHECKS and/or section 8 CHECKS, AD-JUSTMENTS, AND FAULT FINDING.

6.5 Checking the burner pressureAlthough the burner pressure is factory set, it is necessary to check it during commissioning.Isolate the appliance from the electrical supply and attach a suitable manometer to the gas valve outlet test nipple.

Outlet testnipple

Inlet test

cap

Light the appliance as described in 6.4 INITIAL LIGHTING and com-pare the reading on the manometer with the values described in 2.2 TECHNICAL DATA. If adjustement is required, follow the detailed in-structions in section 8.3 CHECKING AND ADJUSTING BURNERPRESSURE. Once the burner pressure has been checked, isolate the appliance from the electrical supply, remove the manometer, and tight-en the gas valve outlet test nipple.

6.6 Setting the outlet temperatureThe hot water outlet temperature can be adjusted between 35°C - 60°C via the thermostat knob.

6.7 Final checks

b Ensure all test nipples on the appliance gas valve are tight and checked for tightness.

b Ensuretheappliancefluesystemisfittedcorrectlyandisprop-erly secured.

b Ensure all pipe work is re-checked for tightness.

b Re-fitappliancecasing.

b Complete benchmark checklist. For uk onlyComplete details of the appliance, controls, installation nd commis-sioning in the Benchmark checklist at the back of this book. It is import-ant that the Benchmark checklist is correctly completed and handed to the user. Failure to install and commission the appliance to the manu-facturers instructions will invalidate the warranty.

6.8 Instructing the userHandoveralldocumentationsuppliedwiththisappliance–includingtheseinstructions–andexplaintheimportanceofkeepingtheminasafe place.Explain to the user how to isolate the appliance from the gas, water and electricity supplies, and the locations of all drain points.Show the user how to operate the appliance and its controls correctly.Explain to the user how to turn off the appliance for both long and short periods, and advise on the necessary precautions to prevent frost damage.Explaintotheuserthatforcontinuedsafeandefficientoperation,theappliance must be serviced annually by a competent person.

19

7 SERVICING

7.1 GeneralOnce the appliance has been serviced, the benchmark Service Re-cord must be completed. For UK only: It is important that the Bench-mark Service Record is correctly completed and handed to the user. Failure to install and commission the appliance to the manufacturers instructions will invalidate the warranty. To ensure the continued safe andefficientoperationof theappliance, it is recommended that it ischecked and serviced at regular intervals. The frequency of servicing will depend upon the particular installation conditions, but in general, once per year should be adequate.It is the law that any servicing work is carried out by competent person such as a Vokera engineer, an approved service agent, British Gas, or other Gas-Safe registered personnel.The following instructions apply to the appliance, but it should be re-membered that the domestic hot water system will also require atten-tion from time to time.

7.2 Routine annual servicing - Check the operation of the appliance and ensure it functions as de-

scribed in section 8 CHECKS, ADJUSTMENTS, AND FAULT FIND-ING.

- Comparetheperformanceoftheappliancewithitsdesignspecifica-tion.Thecauseofanynoticeabledeteriorationshouldbeidentifiedandrectifiedwithoutdelay.

- Thoroughly inspect the appliance for signs of damage or deteriora-tionespeciallythefluesystemandtheelectricalapparatus.

- Checkandadjust–ifnecessary–allburnerpressuresettings(see8.3 CHECKING AND ADJUSTING BURNER PRESSURE).

- Carryoutananalysisofthefluegases(see8.5EXTERNALFAULTS),andvisuallychecktheconditionoftheentireflueassembly.

- Compare the results with the appliance design specification.Anydeteriorationinperformancemustbeidentifiedandrectifiedwithoutdelay.

- Ensurebothflueventurisarecleanandfreefromanydebrisorob-struction.

- Ensure both the burner and heat exchanger are clean and free from any debris or obstruction.

- Inspect all joints for signs of leakage and repair if necessary. - Refer to the commissioning section and/or replacement of parts sec-

tion for detailed instruction if required.

7.3 Replacement of componentsAlthough it is anticipated that this appliance will give years of reliable, trouble free service, the life span of components will be determined by factors such as operating conditions and usage. Should the appliance developafault,thefaultfindingsectionwillassistindeterminingwhichcomponent is malfunctioning.

7.4 Component removal procedureTo remove a component, access to the interior of the appliance is es-sential. Isolate the appliance from the electrical supply and remove the fuse. And when necessary, close all service valves on the appliance, remove the appliance casing as described in section 4.8 CASING REMOVAL. Drain the water content from the appliance via an outlet or appropriate drain point. Ensure some water absorbent cloths are available to catch any residual water that may drip from the appliance or removed component. Undertake a complete commissioning check as detailed in section 6 COMMISSIONING, after replacing any component.

b Always test for gas soundness if any gas carrying components have been removed or disturbed.

7.5 High limit thermostatCarry out component removal procedure as described in 7.4 COMPO-NENT REMOVAL PROCEDURE. Locate and remove the ten screws that secure the air chamber cover. Remove the air chamber cover.Pull off electrical connections from the high limit thermostat, slacken and remove retaining screws.Replace in the reverse order.

7.6 Flow switchCarry out component removal procedure as described in 7.4 COMPO-NENT REMOVAL PROCEDURE.Remove the appliance casing as described in 4.8 CASING REMOVAL. Disconnect the cold water inlet pipe from the bottom connection of the flowswitch.Disconnecttheoutletpipefromthetopconnectionoftheflowswitch.Detachtheelectricalplug/wiresfromtheflowswitch.Slackenandre-movethelock-nutthatsecurestheflowswitchtothelowerframe.Re-place in the reverse order.

1 High limit thermostat 2 Flow switch

PRINTED CIRCUIT BOARD (PCB) Carry out component removal procedure as described in 7.4 COMPO-NENT REMOVAL PROCEDURE.Remove the appliance casing as described in 4.8 CASING REMOVAL. Carefully slide out the control panel until the lugs on the lower right and left side of the panel are free from the slots on the appliance frame. Remove the electrode lead from its clip on the PCB housing.Locate and remove the two screws which secure the PCB cover & ter-minal cover, then remove cover, after carefully taking note of all wiring connections, disconnect all wiring from the PCB, locate and remove the PCB securing screws, remove PCB.Replace in the reverse order.

21

20

b Ensure that the replacement PCB has the correct “Jumper Tag” configuration(seesection2.4EXTERNALWIRING).

7.7 BurnerCarry out component removal procedure as described in 7.4 COMPO-NENT REMOVAL PROCEDURE.

- disconnect the glowplug cable connection - remove the lower cable grommet from its seat on the air distri-

bution box - disconnect the burner thermostat (I) removing the relative fas-

tening clip - fully unscrew the top nut of the gas valve train - loosen the nuts (A) of the by-pass train - loosenthenut(B)oftheburner/flowmetertrain - take out the clips (C) securing the trains to the burner - disconnect the trains (D) from the burner - unscrewthe4screws(E)fixingtheburnertothebackboard - takeouttheburner(F),unscrewthescrews(G)fixingthecollec-

tor to the burner Replace in the reverse order.

F

G

B

G

H

A

D

C

IE

7.8 Flue fanCarry out component removal procedure as described in 7.4 COMPO-NENT REMOVAL PROCEDURE.Remove the appliance casing as described in 4.8 COMPONENT RE-MOVAL PROCEDURE. Locate and remove the screws that secure the air chamber cover. Remove the air chamber cover.Locateandremovethescrewsthatsecuretheflueassembly.Discon-nect the electrical connections and silicone tubes attached to the fan, noting their positions. Disconnect the maintenance clip that secures theflueoutletpipetothefan,easethefan&fluehoodassemblyfromits location. Locate and remove the screws that secure the fan to the fluehood.Removethefantoflueelbow.Replaceinthereverseorder.Ensure all seals are in good condition, taking care to ensure they are replaced correctly.

7.9 Heat exchangerCarry out component removal procedure as described in 7.4 COMPO-NENT REMOVAL PROCEDURE.Unscrew and remove the air chamber front cover.Locate and remove the six screws around the inner combustion cover and remove. Remove locking pins and disconnect the pipes, from the flowandreturnconnectionsontheheatexchanger.Disconnect the electrical plugs from the primary thermistor, the heat exchanger can now be withdrawn from the appliance. Replace in the reverse order. Ensure all seals are in good condition, taking care to ensure they are replaced correctly.

Screws

21

8 CHECKS, ADJUSTMENTS, AND FAULT FINDING

8.1 Checking appliance operationWhen carrying out any repairs or servicing to the appliance, the rele-vant commissioning procedure must be undertaken to ensure the con-tinued safe operation of the appliance. Particular attention should be made to ensure gas soundness, water soundness, and the electrical integrity of the appliance.

8.2 Appliance mode of operationWhen there is a request for hot water via a hot water outlet or tap, the waterflowswitchsenseswatermovementtherebyenergisingthefan.

b Theremustbesufficientinletwaterpressureandflow(min.0,15bar/2lpm)toensurethewaterflowswitchisactivated.Ifthereisinsufficientpressureand/orflow,theappliancewillbeprevent-ed from operating. When the fan runs, it proves the differential air pressure switch which in-turn allows an ignition sequence to begin.

b The ignition sequence lasts approximately 7 seconds, during which the appliance will continue to spark even if the burner has already lit. If the spark/sensing electrode does not sense ignition the appliance will then go to lockout. Ignition is sensed by the electroniccircuitrytoensureflamestabilityattheburner.Oncesuccessful ignition has been achieved, the electronic circuitry allows the full gas rate through the appliance. When the appli-ance reaches the desired temperature the burner will modulate to maintain the set temperature. Should the temperature contin-ue to rise the burner will shut off when the maximum operating temperature is attained. When the request for heat and/or hot water has been satisfied, the fanmay continue to operate todissipate any residual heat within the appliance.

8.3 Checking and adjusting burner pressureAltough the burner pressure is factory set, it is necessary to check it during servicing or if the gas valve has been removed. Isolate the ap-pliance from the electrical supply and attach a suitable manometer to the gas valve outlet test nipple.

SETTING THE MAXIMUM BURNER PRESSURELight the appliance as described in 5.10 & 6.4 and compare the read-ing on the manometer with the value described in 2.2 TECHNICAL DATA. If adjustement is required, remove the protective cap from the gas valve modulating coil assembly and turn the outer (10mm) nut clockwise to increase, or counterclockwise to decrease the burner pressure.

b You should ensure that one or two hot water outlets are fully open during the above procedure. This will ensure that the out-put of the appliance (burner pressure) is not compromised due to a high outlet temperature.

SETTING THE MINIMUM BURNER PRESSUREOnce the maximum burner pressure has been checked and/or adjust-ed, remove one of the grey wires from the modulating coil. Compare the reading on the manometer with the value described in 2.2 TECH-NICAL DATA. If adjustement is required, turn the inner (red) cross-head screw clockwise to increase, or counter-clockwise to decrease the burner pressure, whilst ensuring that the outer (10mm) nut does not move. When checking and/or adjustement has been completed, isolate the appliance from the electrical supply, replace the protective cap,refitthegreywiretothemodulatingcoil,removethemanometer,and tighten the outlet test nipple.

b A gas soundness check must be carried out.

8.4 Maintenance To ensure correct operation over time, the appliance should be checkedbyaqualifiedprofessionalatleastonceayear.IMPORTANT: before performing any cleaning or maintenance work, or before opening or removing the boiler panels, turn the appliance off by shutting off the gas tap.

Checkthatthefluegasespassagesectionsoftheheatexchangerarenot obstructed. Use a wet soapy cloth to clean the external panels.Do not use abrasive solvents, powders or sponges.Do not clean theapplianceor itscomponentpartswithhighlyflam-mable substances such as : petrol, alcohol or heavy oil.Check electrode position and distance.

7 ±1.5

3.5

±0.

5-3

.8+

3.8

0

22

8.5 External faultsBeforecarryingoutany fault-findingorcomponent replacement,en-sure the fault is not attributable to any aspect of the installation.

INSTALLATION FAULTS

Symptom Possible causes

No ignitionCheck external wiring.

Check cold supply is connected to cold inlet.

Poor hot waterCheck gas supply.

Checkadjustflowrate.Unstableflamepicture Checkfluesystem.

8.6 Electrical checksAny electricalchecksmustbecarriedoutbyasuitablyqualifiedperson.EARTH CONTINUITY TESTIsolate the appliance from the electrical supply, and using a suitable multi-meter carry out a resistance test. Connect test leads between an appliance earth point and the earth wire of the appliance supply cable. The resistance should be less than 1 ohm. If the resistance is greater than 1 ohm check all earth wires and connectors for continuity and integrity.SHORT CIRCUIT CHECKIsolate the appliance from the electrical supply, and using a suitable multi-meter, carry out a short circuit test between the Live & Neutral connections at the appliance.Repeat above test on the Live & Earth connections at the appliance term.

b Should it be found that the fuse has failed but no fault is indicat-ed, a detailed continuity. Check will be required to trace the fault. A visual inspection of components may also assist in locating the fault.

POLARITY CHECKWith the appliance connected to the electrical supply and using a suit-able multi-meter, carry out the following voltage tests: - connect test leads between the Live & Neutral connections at the

appliance. The meter should read approximately 230V ac. If so pro-ceed to next stage. If not, see REVERSED POLARITY OR SUPPLY FAULT

- connect test leads between the Live & Earth connections at the ap-pliance. The meter should read approximately 230V ac. If so pro-ceed to next stage. If not, see REVERSED POLARITY OR SUPPLY FAULT

- Connect test leads between the Neutral & Earth connections at the appliance.Themeter should readapproximately0–15Vac. If sopolarity is correct. If not, see REVERSED POLARITY OR SUPPLY FAULT

REVERSED POLARITY OR SUPPLY FAULTRepeat the above tests at the appliance isolator, if testing reveals cor-rect polarity and/or supply at the isolator, re-check wiring and connec-tions between the isolator and the appliance. If tests on the isolator also reveal reversed polarity or a supply fault, consult the local elec-tricity supplier for advice.

RESISTANCE TO EARTH CHECKIsolate the appliance from the electrical supply, and using a suitable multi-meter carry out a resistance test. Connect test leads between the Live & Earth connections at the appliance. If the meter reads other thaninfinitythereisafaultthatmustbeisolated,carryoutadetailedcontinuity check to identify the location of the fault.

b These series of checks must be carried out before attempting anyfault-findingproceduresontheappliance.Oncompletionofany task that required the disconnection and re-connection of any electrical wiring or component, these checks must be re-peated.

8.7 Operating faults and resetIn the event of a fault, the displays summarised and described in the table are shown.

Error type TransitoryDefinitive Error code Icons

Limit thermostat alarm Definitive 02

Air pressure switch fault Transitory 03

Burner thermostat alarm Definitive 04

Air pressure switch alarm Definitive 03 ACF alarm lockout module Definitive 01

ACF electronics fault alarm Definitive 01

parasiteflamefault Transitory 11

Overtemperature fault Definitive 88°Cflashing

Domestic hot water NTC Fault Transitory 06

Input NTC Fault Transitory 08

IIn the event of a transitory fault the appliance independently attempts a reset of operations.In the event of a permanent fault it is necessary to reset the normal operation of the appliance by pressing the ON - OFF/RESET (A) key.This operation can be repeated a maximum of 2 times. If the problem is not resolved, request help from the Technical Assistance Centre.The system provides for the alarms to remain operational even in the ON-OFF/RESET state. In this state they are not displayed however. In the event a lockout occurs when the function is OFF, to reset it the water heater must be set to ON and then to OFF again.

8.8 Fault findingBeforeattemptinganyfault-finding,theelectricalchecksasdetailedin8.6 ELECTRICAL CHECKS must be carried out.Isolate the appliance from the electrical supply and remove the casing and PCB cover.Restore the electrical supply to the appliance, turn the selector switch to the “on” position, and open a hot water outlet. The appliance should now function as described in section 8.2 APPLIANCE MODE OF OP-ERATION. Should the appliance fail to respond, the internal fuse and connectors should be checked to ensure integrity and continuity. If the appliancestillfailstorespond,refertothedetailedfault-findingflow-charts overleaf.

23

9 L.P.G. INSTRUCTIONSTECHNICAL DATA G31Inlet pressure (LPG) 37 mbarMaximum burner pressure 36,00 mbarMinimum burner pressure 4,80 mbarGas rate 2,33 Sm3/hInjectorsize 13 x 0,78 mm

RELATED DOCUMENTSBS 5440 PART 2 FluesBS 5440 PART 1 Flues & ventilation

BS 5546 PART 1 Installation of gas hot water supplies for domestic purposes

BS 6891 Low pressure installation pipes

BS 5482 Domestic butane & propane gas burners in permament dwellings

9.1 Gas supplyThe gas supply must be connected to the appliance by a competent LPGinstallerandmustbeofsufficientsizetosupplytheapplianceatits maximum output.An existing supply must be checked to ensure that it is of adequate sizetodealwiththemaximumratedinputofthisandanyotherappli-ances that it serves.

9.2 Gas supply installationThe entire installation, including the meter, must be purged and checked for gas soundness.

9.3 Checking and adjusting burner pressureAlthough the burner pressure is factory set, it is necessary to check it during servicing or if the gas valve has been removed. Isolate the appliance from the electrical supply and attach a suitable manometer to the gas valve outlet test nipple.

SETTING THE MAXIMUM BURNER PRESSURELight the appliance as described in 5.10 & 6.4 and compare the read-ing on the manometer with the value described in 2.2 TECHNICAL DATA. If adjustement is required, remove the protective cap from the gas valve modulating coil assembly and turn the outer (10mm) nut clockwise to increase, or counterclockwise to decrease the burner pressure.

b You should ensure that one or two outlets are open during the above procedure. This will ensure that the output of the appli-ance (burner pressure) is not compromised due to a high outlet temperature.

SETTING THE MINIMUM BURNER PRESSUREOnce the maximum burner pressure has been checked and/or adjust-ed, remove one of the grey wires from the modulating coil. Compare the reading on the manometer with the value described in 2.2 TECH-NICAL DATA If adjustement is required, turn the inner (red) cross-head screw clockwise to increase, or counter-clockwise to decrease the burner pressure, whilst ensuring that the outer (10mm) nut does not move. When checking and/or adjustement has been completed, iso-late the appliance from the electrical supply, replace the protective cap, refitthegreywiretothemodulatingcoil,removethemanometer,andtighten the outlet test nipple.

b Important, a gas important, a gas soundness check must be car-ried out.

10 GAS TRANSFORMATIONConverting gas from one form to another can be done easily, even with the appliance already installed.

b Theconversionshallonlybecarriedoutbyqualifiedpersonnel.

The water heater is supplied to operate with methane gas (G20) or LPG (G31) in accordance with the indications of the product label.The appliance can be converted from one type of gas to another using oneofthespecifickitsprovideduponrequest:

- Methane conversion kit - LPG conversion kit

Proceed as follows to perform the conversion: - switch off the electrical supply - remove in succession the casing, the air distribution box cover

and the combustion chamber cover - disconnect the glowplug cable connection - remove the lower cable grommet from its seat on the air distri-

bution box - disconnect the burner thermostat (I) removing the relative fas-

tening clip - fully unscrew the top nut of the gas valve train - loosen the nuts (A) of the by-pass train - loosenthenut(B)oftheburner/flowmetertrain - take out the clips (C) securing the trains to the burner - disconnect the trains (D) from the burner - unscrewthe4screws(E)fixingtheburnertothebackboard - takeouttheburner(F),unscrewthescrews(G)fixingthecollec-

tor to the burner - from the conversion kit take the complete LPG collector and rel-ativeLPGburnerflange.

- fixtheburner,thecollectorandtheflangeusingthescrews pre-viously removed.

F

G

B

G

H

A

D

C

IE

24

FortheconversionfrommethanegastoLPG,installtheburnerflange(H).For the conversion from LPG to methane gas, remove it.

b Beforeremovingtheburnerflange,empty thewaterheaterasdescribed in the paragraph "Emptying the water heater".

H

Then set Parameter 4 (see paragraph "Parameters menu") as follows:Conversion from METHANE to LPG

Parameter Value4 1

Conversion from LPG to METHANEParameter Value

4 0

10.1 AdjustmentsThe appliance has already been factory set by the manufacturer.However, should it need to be readjusted, for example after non-sched-uled maintenance, replacing the gas valve or gas conversion, proceed as described below.

b Adjustments to maximum power must be performed in the indi-catedsequenceandonlybyqualifiedtechnicians.

- RemovethecasingbyunscrewingthefixingscrewsA (see sec-tion "4.8 CASING REMOVAL").

- Loosen the screw of the pressure test point (1) downstream from the gas valve by roughly two turns, then connect the pressure gauge

- Disconnect the compensation connector (5) from the gas valve - Remove the protective hood (2) - Openawatertaptoitsmaximumflowrate,setthetemperature

selector to maximum and power up the water heater

1

5

2

3

4

Adjusting to the maximum value: - Screw the nut (3) fully on until obtaining the gas pressure shown

in the tableMaximum gas pressure at nozzles

G2015,20 mbar155,00 mm. W.C.

LPG35,30 mbar359,96 mm. W.C.

Adjusting to the minimum value: - disconnect one of the two electric cables from the coil - screw or unscrew the hex head socket screw (4) to adjust the

minimum until obtaining the gas pressure value shown in the table

- put back the protective cap (2)

Minimum gas pressure at nozzles

G202,10 mbar21,41 mm. W.C.

LPG5,00 mbar50,99 mm. W.C.

- Reconnect the compensation socket to the gas valve (5) - Disconnect the pressure gauge and re-tighten the pressure test

point screw (1)

b Please remember that for operation with LPG, the appliance needs a gas supply pressure adjuster, which should be set to 37 mbar.

b Please remember that for operation with LPG, a gas pressure regulator at the appliance power supply is required, set to 37 mbar for propane.

25

This Commissioning Checklist is to be completed in full by the competent person who commissioned the water heater as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference

Failure to install and commission according to the manufacturer’s instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty. This does not affect the customer’s statutory rights.

GAS FIRED CONTINUOUS FLOW WATER HEATER COMMISSIONING CHECKLIST

Customer name: Telephone number:Address:Water Heater Make & Model:Serial Number:Commissioned by (PRINT NAME): Gas Safe Register Number:Company name: Telephone number:Company address:

Commissioning date:To be completed by the customer on receipt of a Building Regulations Compliance Certificate*:Building Regulations Notification Number (if applicable)

CONTROLSIs there a separate temperature control fitted Yes NoHave they been explained to the customer Yes NoHas the Appliance been set to the required MAX temp. Yes NoIf NO has the Appliance been set to the required temp. Yes No

SYSTEMIs there a filter on the incoming mains Yes NoIs the system on a secondary return Yes NoHas an unvented kit been installed Yes NoIf yes please record Safety Valve Size and rating Size RatingDoes the discharge pipe comply with current building regulations YesPlease record location of Pressure Reducing ValvePressure Reducing Valve SettingExpansion Vessel SizeExpansion Vessel Charge PressureHas the system been installed with a storage vessel Yes No

DOMESTIC HOT WATER MODEGas Rate at High Fire m³/hr ft³/hrBurner Pressure Lo mbar Hi mbarInlet Pressure Dynamic at Hi Fire and all other appliances running mbarInlet water temp °CWater Heater Set Temperature °CMaximum Flow Rate Achieved L/minIs the installation in a hard water area (above 150mg/L) Yes NoIf Yes What Type of Scale Reducer has been FittedHot Water checked at all outlets Yes Temp °C

FLUEINGWhat type of water heater is fitted Internal ExternalEXTERNAL is the unit mounted fully outside Yes NoIf NO explain in detail where the appliance is mounted

INTERNAL does the flueing comply with current standards Yes NoIf the flueing to manufacturers instructions Yes No

CONDENSING WATER HEATERS ONLYHas the condensate drain has been installed as per manufacturers instructions and/or BS5446/BS6798 Yes No

FULL INSTALLATION

Record the following:At max rate: CO ppm and CO/CO2 RatioAt min. Rate: (where possible) CO ppm and CO/CO2 Ratio

Does the hot water system fully comply with the appropriate Building Regulations YesThe water heater and associated products have been installed and commissioned in accordance with all manufacturers instructions YesThe full operation of the water heater and any controls have been demonstrated to and understood by the customer YesThe manufacturers literature including Benchmark Checklist and Service Record, has been explained and left with the customer Yes

Commissioning Engineer’s Signature

Customer’s Signature

(To confirm satisfactory demonstration and receipt of manufacturer’s literature)

* All installations in England and Wales must be notified to Local Authority Building Control (LABC) either directly or through a Competent Persons Scheme. A Building Regulations Compliance Certificate will then be issued to the customer.

© Heating and Hotwater Industry Council (HHIC) www.centralheating.co.uk

26

SERVICE RECORD

It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed.

Service Provider

Before completing the appropriate Service Interval Record below, please ensure you have carried out the service as described in the manufacturer’s instructions. Always use the manufacturer’s specified spare part when replacing controls.

SERVICE 01 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 03 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 05 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 07 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 09 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 02 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 04 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 06 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 08 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 10 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE RECORD

It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed.

Service Provider

Before completing the appropriate Service Interval Record below, please ensure you have carried out the service as described in the manufacturer’s instructions. Always use the manufacturer’s specified spare part when replacing controls.

SERVICE 01 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 03 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 05 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 07 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 09 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 02 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 04 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 06 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 08 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

SERVICE 10 Date:

Engineer name:Company name:Telephone No:Operative ID No:Comments:

Signature

Cod

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Registered address:Vokèra Ltd

Borderlake HouseUnit 7 Riverside Industrial Estate

London ColneyHerts AL2 1HG

enquiries@vokera.co.uk

www.vokera.co.ukwww.vokera.ie

Sales, General EnquiresT 0844 391 0999F 0844 391 0998

Vokèra IrelandWest Court, Callan

Co KilkennyT 056 7755057F 056 7755060

Vokèra Limited reserve the right to changespecification without prior notice

Consumers statutory rights are not affected.

Company Reg No: 1047779