VOKERA Mynute Manuel utilisateur

THESE INSTRUCTIONS

TO BE RETAINED

BY USER

Vokèra is a licensed member of the Benchmark scheme

which aims to improve the standards of installation and

commissioning of domestic hot water systems in the UK.

Mynute

Standard efficiency system boiler

12e - 16e - 20e

Users

Instructions

Mynute

INTRODUCTION

Page

Dear customer 2

Do’s and don’t’s 2

1.1 gas appliances 3

1.2 electrical supply 3

1.3 guarantee registration card 3

1.4 benchmark log book 3

1.5 how does it work? 3

1.6 dimensions 3

1.7 clearances 3

2.1 before switching on 4

2.2 appliance controls 4

2.3 lighting the boiler 4

3.1 top-up the system 5

3.2 reset the appliance 5

3.3 shut down the system for short periods 5

3.4 shut down the system for long periods 5

3.5 care for the appliance 5

4.1 I suspect a gas leak 6

4.2 I frequently have to top-up the system 6

4.3 the reset light is on 6

4.4 the appliance is due its annual service 6

4.5 I need to call an engineer 6

5.1 Mechanical clock 7

5.2 Digital clock 8

5.3 Twin channel programmer 10

Contents

Introduction

Things you should know

Getting started

How to....

What if....

Setting the Vokera...

2Mynute

INTRODUCTION

Dear Customer

YourMynuteboilerhasbeendesignedtomeetandexceedtheverylateststandardsingascentralheatingtechnology,

andifcaredfor,willgiveyearsofreliableuseandefficiency.Pleasethereforetakesometimetoreadtheseinstructions

carefully.

Do’s and Don’ts

●Do ensure that the system pressure is periodically checked

●Do ensure that you know how to isolate the appliance in an emergency

●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 access

●Do not hang clothes etc. over the appliance

Fig. 1

mode

switch

variable

thermostat pressure

gauge Vokera

clock or

programmer

(if fitted)

reset/warning

light

Mynute

1.1 GAS APPLIANCES

Gas Safety (Installations and Use) Regulations.

In the interests of your safety and that of others it

is a legal requirement that all gas appliances are

installedandcorrectlymaintainedbyacompetent

person and in accordance with the latest regula-

tions.

1.2 ELECTRICAL SUPPLY

Please ensure that this appliance has been prop-

erlyconnectedtotheelectricalsupplybymeansof

a double pole isolator or un-switched socket, and

that the correct size of fuse (3 amp) has been

fitted.

Warning: This appliance must be earthed!

1.3 GUARANTEE REGISTRATION CARD

Please take the time to fill out your guarantee

registration card. The completed warranty card

should be posted within 30 days of installation.

1.4

BENCHMARK

LOG BOOK

The

Benchmark

Log Book is supplied with your

boiler.Thisimportantdocumentmustbecompleted

duringtheinstallation/commissioningofyourboiler.

All CORGI Registered Installers carry a CORGI ID

cardandhavearegistrationnumber.Bothshoulfbe

recorded in your

Benchmark

Log Book. You can

check your installer by calling CORGI direct on

01256372300.Failuretoinstallandcommissionthe

appliance in accordance with the manufacturers

instructions may invalidate the warranty. This does

not affect your statutory rights.

1.5 HOW DOES IT WORK?

Your Mynute boiler is a central heating boiler,

whichsuppliesheatedwatertoyourradiatorsand

hot water cylinder.

It is controlled by the time clock or programmer

and any thermostats that your installer may have

fitted.

The Mynute lights electronically and does not

have a pilot light.

Intheunlikelyeventofafaultdevelopingwithyour

boiler, the supply of gas to the burner will be

terminated automatically.

THINGS YOU SHOULD KNOW

1.6 DIMENSIONS

HEIGHT 740mm

WIDTH 366mm

DEPTH 315mm

1.7 CLEARANCES REQUIRED

ABOVE 150mm

BELOW 150mm

SIDES 12mm

FRONT 600mm

4Mynute

GETTING STARTED

2.1 BEFORE SWITCHING ON

Beforeswitchingtheapplianceonpleasefamiliar-

ise yourself with:

●How to isolate the appliance from the gas,

water, and electricity supplies.

●How to check and top-up – if necessary – the

system water pressure.

●The time clock or programmer.

●Any external thermostats and their functions.

●The appliance controls.

2.2 APPLIANCE CONTROLS (see fig. 1)

The appliance controls are concealed behind the

front flap. To gain access to the controls simply

pressthebottomcentreof the flap and lift upward

to engage the holding clip.

The appliance has a mode switch, variable ther-

mostat, system pressure gauge, and an aperture

for an integral clock or programmer. The mode

switch has three positions:

●Reset

●Off

●On

The variable thermostat allows you to set the

temperatureofthewaterto yourradiators andhot

water cylinder (not the hot water to your taps!)

between 40ºC (min) and 80ºC (max).

The pressure gauge shows the current pressure

ofthe system,the gaugeshould besetbetween 1

and1.5BAR. Whentheapplianceisoperatingthe

gaugemay riseor fallslightly,this isquite normal.

The minimum permissible level for the safe and

efficient operation of the appliance is 0.5 bar.

Should the pressure fall below 0.5 bar, the boiler

shuts off automatically.

Depending on the type of controls specified by

your installer you may have an integral Vokera

time clock or programmer fitted to the appliance,

ifso,instructionscanbefoundonpages6-10.Ifan

externaltimeclockorprogrammerhasbeenfitted,

pleaserefertotheinstructionssuppliedwithsuch.

2.3 LIGHTING THE BOILER

Ensure the gas and electrical supply to the boiler

are turned on.

Turnthe mode switch tothe‘on’ position. Refer to

theparticular instructions for the type of program-

mer or time clock fitted and ensure there is a

demand for heating and/or hot water. If there is a

room thermostat and/or hot water cylinder ther-

mostat you should ensure these are also calling

for heat.

When there is a demand for heating and/or hot

water via the above controls the boiler will go

throughanignitionsequence,wherebytheburner

will light.

If the appliance fails to ignite during the ignition

sequence,allowaperiodoftwominutesbeforere-

setting.

To adjust the output temperature of the appliance

turn the thermostat knob clockwise to increase or

anti-clockwise to decrease.

Whentheappliancereachesthe settemperature,

the burner will go off for minimum period of ap-

proximately 3 minutes.

Whentheprogrammer/timeclockorexternalther-

mostats heating request has been satisfied, the

appliance will switch off automatically.

Mynute

HOW TO...

3.1 HOW TO TOP-UP THE SYSTEM PRESSURE

(fig. 2)

The system pressure must be checked periodi-

cally to ensure the correct operation of the boiler.

The needle on the gauge should be reading be-

tween 1 and 1.5 bar when the boiler is in an off

position and has cooled to room temperature. If

thepressure requires ‘topping-up’ use the follow-

ing instructions as a guide.

●Locate the filling valve connections (external to

the boiler).

●Attach the filling loop to both connections.

●Openthefillingvalveslowlyuntilyouhearwater

entering the system.

●Close the filling valve when the pressure gauge

(on the boiler) reads between 1 and 1.5 BAR.

●Remove the filling loop from the connections.

3.2 HOW TO RESET THE APPLIANCE

When the reset light is illuminated the appliance

will require to be reset manually. Using the mode

switch, turn it two clicks to the left (reset position)

then turn it back to the ‘on’ position.

Allow a period of two minutes to elapse before

turning the mode switch to the reset position.

IMPORTANT

If the appliance requires to be reset frequently, it

may be indicative of a fault, please contact your

installer or Vokera Customer Services for further

advice.

3.3 HOW TO SHUT DOWN THE SYSTEM FOR

SHORT PERIODS

The system and boiler can be shut down for short

periods by simply turning the programmer or time

clock to the off position (see pages 6-10 or the

instructions supplied). It is also advisable to turn

off the main water supply to the house.

3.4 HOWTOSHUTDOWNTHESYSTEMFORLONG

PERIODS

Ifthe house is to be left unoccupied for any length

oftime –especially duringthe winter –the system

shouldbethoroughlydrainedofallwater.Thegas,

water, and electricity supply to the house should

alsobeturnedoff.Formoredetailedadvicecontact

your installer.

3.5 HOW TO CARE FOR THE APPLIANCE

To clean the outer casing use only a clean damp

cloth.Donotuseanyscourersorabrasivecleaners.

Fig. 2

6Mynute

WHAT IF...

4.1 WHAT IF I SUSPECT A GAS LEAK

Ifyoususpectagasleak,turnoffthegassupplyat

the gas meter, and contact your installer or local

gas supplier. If you require further advice please

contact your nearest Vokera office.

4.2 WHAT IF I HAVE TO FREQUENTLY TOP-UP

THE SYSTEM

Ifthe system regularly requires topping-up, it may

beindicativeofaleak.Pleasecontactyourinstaller

and ask him to inspect the system.

4.3 WHAT IF THE RESET LIGHT IS ON

Iftheresetlightisonitindicatesthattheboilerhas

failed to ignite or has overheated, when this hap-

pens the boiler automatically shuts down and

requires to be reset manually (see 3.2).

4.4 WHAT IF THE APPLIANCE IS DUE ITS AN-

NUAL SERVICE

Advice for tenants only

Your landlord should arrange for servicing.

Advice for homeowners

Please contact Vokera Customer Services (0870

333 0220 (UK) or 05655057 (ROI) if you would

prefer a Vokera service engineer or agent to

service your appliance. Alternatively your local

CORGI registered engineer may be able to serv-

ice the appliance for you.

4.5 WHAT IF I NEED TO CALL AN ENGINEER

Ifyouthinkyourboilermayhavedevelopedafault

please contact your installer or Vokera Customer

Services(08703330220(UK)or05655057(ROI)

haveallyourdetailsto handincluding fulladdress

andpostcode,relevantcontactnumbers,andyour

completed appliance log book.

Mynute

VOKERA TIMECLOCKS

5.1 SETTING THE MECHANICAL CLOCK

The Vokera mechanical time clock can automati-

callyswitchyourboileronandoffatthesametime

every day of the week. The minimum ’on’ or ‘off’

period can be as little as 15 minutes.

The outer clock face consists of 96 black pins.

Each pin represents a time period of fifteen min-

utes.When apin ispushed towardstheoutside of

theclock face, the time clock is in an ‘on’ position,

consequently when it is pushed towards the inner

part of the clock face it is in an ‘off’ position.

5.1.1 SETTING THE ‘ON’& ‘OFF’TIMES

Push the necessary amount of pins towards

the outer clock face for the time period that

you want the boiler to be ‘on’(for example if

youwantedtheboilertobeonbetween4.00PM

and 8.00PM, push out the 16 pins located

between 16 and 20 on the clock face).

5.1.2 SETTING THE ‘TIME OF DAY’

Grasp the outer clock face and turn clock-wise

until the correct ‘time of day’is opposite the black

pointer.

5.1.3 SELECTOR SWITCH

The time clock has a three-position switch. This

switch over-rides the timed settings (‘on’ & ‘off’

times) of the clock.

'CorrectTime'Pointer

Selector Switch

I = boiler 'on' continously

= boiler working via time clock

0 = boiler 'off' continously

Vokera 24 Hour Mechanical Clock

8Mynute

VOKERA PROGRAMMERS

5.2 SETTING THE DIGITAL CLOCK

The Vokera digital time clock will automatically

switchyour boileron andoff.Ithasa totalof twenty

different switching commands, consisting of ten

‘on’ commands and ten ‘off’ commands.

Each ‘on’or ‘off’ command can be used to switch

the boiler ‘on’ or ‘off’ at the same time:

● Every day of the week

●Monday to Saturday

●Monday to Friday

●Saturday and Sunday

Example

Group of days On Off Commands

used

Mon. to Fri. 06.00 09.00 2

Mon. to Fri. 16.00 21.00 2

Sat. & Sun. 08.30 10.30 2

Sat. & Sun. 17.00 23.00 2

Total 8 used

Commands ‘free’ 12 unused

5.2.1 BEFORE PROGRAMMING

Gently press and release the ‘Res.’ button with a

pencil or similar, this will clear the memory of all

information. This should only be done when you

want to change or insert a complete new pro-

gramme.

5.2.2 SETTING THE TIME OF DAY

The ‘real time’ clock has to be set to the actual

day of the week and time of day, to do this:

●Press and hold the button (see fig 2).

●Pressthe ‘Day’button untiltheactual dayshows

in the display (1= Monday, 2= Tuesday, 3=

Wednesday,etc.).

●If setting the clock during ‘British summertime’

press the ‘+/-1h’ button once (use a pencil or

similar).

●Pressthe ‘h’buttonuntil theactual hourisshown

in the display.

●Press the ‘m’button until the actual minutes are

showing in the display.

●Now release the button.

●The ‘:’ symbol between the hours and minutes

display will start to flash, this indicates that the

clock is now keeping time (see fig. 3).

Fig. 1

Fig. 2 Fig. 3

5.2.3 ENTERING (on) COMMANDS

●Repeatedly press the Prog. Button until the —

:—symbolappears in the clock display (see fig.

4).

●Press the Day button until the desired group of

days or desired day is shown.

●Press the ‘h’ button until the desired hour for

switching the boiler on is shown.

●Press the ‘m’ button until the desired minutes

are shown.

●Press the Select button until the symbol is

shown (see fig. 5).

●Press the button.

Fig. 4 Fig. 5

5.2.4 ENTERING (off) COMMANDS

●Repeatedly press the Prog. Button until the —

:— symbol appears in the clock display (fig. 4).

●Press the Day button until the desired group of

days or desired day is shown.

●Press the ‘h’ button until the desired hour for

switching the boiler off is shown.

●Press the ‘m’ button until the desired minutes

are shown.

●Press the Select button until the symbol is

shown (see fig. 6).

●Press the button.

Vokera Digital Time Clock

Select Button

Reset Button

Programme Button

Clock Button

Day Button

Display

Minute Button

Hour Button

'British Summertime' Button

Mynute

Oncethe programming has been completed you willhave

to press the Select button – once only – to the (on)

position if the boiler has been programmed to be ‘on’ at

that particular time.

5.2.5 ADVANCING OR LOCKING PROGRAMME

COMMANDS

By pressing the Select button you can advance

the time clock to the next command setting (from

‘on’to ‘off’or ‘off’to ‘on’) or lock the time clock to a

particular command (‘on’ continuously or ‘off’

continuously).

●- ON

●- OFF

●[] – ON CONTINUOUSLY

●[] – OFF CONTINUOUSLY

NOTE

The actual time can be changed to account for

British summertime by simply pressing then re-

leasing the +/- 1h button.

HELPFUL HINTS

●You can check and/or alter the programme

settings at any time by pressing the Prog but-

ton.

●The number of unused ‘commands’ can be

checked by pressing the Prog button until FR is

displayed alongside the number of unused

commands.

●In the event of a power failure, the clock has a

battery back-up. The programme will be held in

the memory for approximately 2 weeks.

Charging time is 70 hours.

●Take a note of the settings you have pro-

grammed,as localpower surgescansometimes

Fig. 6

VOKERA PROGRAMMERS

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