VOKERA Option User manual

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Users
Instructions
THESE INSTRUCTIONS
TO BE RETAINED
BY USER

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2
1 Mode selector switch
2 Fault indicator LED
3 Time clock
4 Low pressure indicator LED
Fig. 1
Dear Customer
Your Option boiler has been designed to meet and exceed the very latest standards in gas central heating technol-
ogy, and if cared for, will give years of reliable use and efficiency. Please therefore take some time to read these
instructions 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
●Do not forget to have the appliance serviced annually
Before use…
Introduction Page 3
Gas safety Page 3
Electrical supply Page 3
Explanation of controls Page 3
Explanation of features Page 4
Guarantee register card and appliance log book Page 4
How to…
Use the appliance for the first time Page 4
Use the mode selector switch Page 3
Set the timer Page 3
Re-pressurise or top-up the system Page 4
Shut down the system for short periods Page 5
Shut down the system for long periods Page 5
Care for the appliance Page 5
What if…
I frequently ‘ top-up’ or ‘re-pressurise’ the system Page 5
The fault light is on Page 5
A gas leak is suspected Page 5
I need to call an engineer Page 5
The boiler is due its annual service Page 5
I want to extend the warranty Page 5
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INTRODUCTION
Your Vokera Option is a combination boiler supplying
central heating and instantaneous domestic hot water.
Featuresincludedareanintegraltimeclock,LEDindica-
tors showing the status of the appliance and system
pressure, 2-stage frost protection and anti-pump seize
function.
GAS SAFETY (Installation and Use) REGULATIONS
Intheinterestsofyoursafetyandthatofothers,itisalegal
requirement that all gas appliances are installed and
correctly maintained by a competent person and in ac-
cordance with the latest regulations.
ELECTRICAL SUPPLY
Please ensure that this appliance has been properly
connected to the electrical supply by means of 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!
EXPLANATION OF CONTROLS
The Vokera Option has been designed for simplicity of
use, as a result there are only two controls – the mode
selector switch & the time clock – that can be accessed
by the user.
MODE SELECTOR SWITCH AT:
OFF “O”, when the mode selector switch is in the ‘OFF’
position, the appliance will not function for hot water or
heating. However the appliance will still operate in frost
protection mode, and if unused for a period of 24 hours,
willmomentarilyactivatethepumptopreventseizuredue
to non-use.
Note; the appliance must have an electrical supply at all
times for the frost protection and anti-seize modes to
operate.
HOT WATER ONLY “ ”, when the mode selector
switch is in the ‘HOT WATER ONLY’ position, the appli-
ance will operate as above. However when a hot water
outlet is opened the appliance will operate to provide hot
water until the demand for hot water has been satisfied.
Note;theappliancedeliversafixedmaximumflowrateof
hot water, therefore if a hot water outlet is turned on full,
it is most likely that you will be unable to obtain hot water
from another outlet at the same time.
HEATING AND HOT WATER “ ”, when the
mode selector switch is in the ‘HEATING AND HOT
WATER’ position the appliance will operate as above.
Howevershould thetime clockbe switchedon automati-
cally or manually, the appliance will operate to provide
heat to the central heating circuit until the demand has
been satisfied.
Note; if a room thermostat is fitted it must be calling for
heat before the appliance will operate.
TIME CLOCK
The Vokera Option is supplied with a built-in, 24-hour,
time clock that can be set to operate the appliance for
centralheating. Howeveritmaybethatyourinstallerhas
fitted an external time clock, (usually because of the
location of the appliance i.e. loft, basement, outhouse,
etc.)ifso,pleasedisregardthefollowinginstructionsand
refer to those supplied with the external time clock.
ONperiod
OFF period
Selector
switch
Setting the time
The time of day can be set by grasping the outer edge of
the black dial and turning it in a clockwise direction until
the correct time is in line with the white pointer.
Setting the ‘switching times’
The ‘ON’ periods are set by sliding the black tappets,
adjacent to the time periods required, to the outer edge
of the dial.
Thetappetsthatremainatthecentreofthedialwillbethe
‘OFF’ periods.
The smallest switching time (ON or OFF) is 15 minutes.
To select ‘Timed’ mode move the selector switch in the
middle of the clock face to the ‘ ‘ position.
To select ‘Constant’ mode move the selector switch in
the middle of the clock face to the ‘I’ position.
To select ‘Off’ mode move the selector switch in the
middle of the clock face to the ‘O’ position.
Fig. 2

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EXPLANATION OF FEATURES
Although the Vokera Option has been designed for
simplicity of use, it utilises the latest in boiler technology,
enabling a host of functions to be carried out simultane-
ously.
FROST PROTECTION MODE
Should the temperature of the appliance fall to 7ºC. the
pump will be activated for a period of 15 minutes or until
the temperature of the appliance rises to 10ºC. This will
be repeated every two hours. Should the temperature of
the appliance fall to 5ºC. the burner will ignite until the
appliance temperature rises to 30ºC.
AUTOMATIC HEATING REGULATION
Theboilerwillautomaticallyadjustitsoutputtemperature
to suit site conditions. However, your installer may have
adjusted this setting during commissioning.
Pleaserefer tothe installationinstructions forfull details.
ANTI-SEIZE FUNCTION
Should the appliance remain inactive for a period of 24
hours, the pump will be activated for a few seconds to
prevent seizure.
APPLIANCE STATUS INDICATORS
TheVokeraOptionhas3statusindicatorsthatshowifthe
appliance is working normally, if it needs ‘topping up’ or
re-pressurising, or if it has a fault (see below).
GUARANTEE REGISTRATION CARD
Pleasetakethetimetofilloutyourguaranteeregistration
card. The completed warranty card should be posted
within 30 days of installation.
APPLIANCE LOG BOOK
A logbook is supplied with the boiler. This important
document must be completed during the installation/
commissioning of your boiler. Failure to install and
commissionthe appliance in accordance with the manu-
facturers instructions may invalidate the warranty. This
does not affect your statutory rights.
Pleasekeep your logbookhandy, asyou will beasked to
quote certain information from the logbook should you
need to contact Vokera Ltd. In the unlikely event of a
problem occurring with your appliance.
Green LED Yellow LED Red LED Reason Action required
On/flashing Off Off Appliance is ok None
On On Off Low pressure Requires ‘topping-up’
See page 5
Off On On Zero pressure Requires ‘re-pressurising’
See page 4
Off Off On Internal fault Reset, see page 5
Off Off Flashing Lockout fault Reset, see page 5
Off Off Off No power, blown fuse, Ensure power supply to
Internal fault Boiler is on, check fuse,
Contact engineer
HOW TO…
●USE THE APPLIANCE FOR THE FIRST TIME
Before switching the appliance on please familiarise
yourselfonhowtoisolatetheappliancefromtheelectric-
ity, gas, and water supplies. If in doubt contact your
installer.
TurnthemodeselectorswitchtotheOFFposition,switch
on the electrical supply to the appliance. The green LED
should be illuminated, (if any other LED’s are illuminated
it indicates the system may require ‘topping up’ or a fault
exists, if so, refer to status indicators section before
continuing) you may now select either HOT WATER
ONLY or HEATING AND HOT WATER.
●OBTAIN HOT WATER
By turning on a hot water outlet (tap) the boiler will fire to
deliver hot water.
The appliance will have been commissioned by your
installer to deliver hot water at both a reasonable tem-
perature and flow rate, should you wish to increase the
temperature of the hot water simply reduce the flow of
water as it comes out of the tap. Please consult your
installer for further advice if required.
●OBTAIN CENTRAL HEATING
When the time clock is in an ‘on’ position, and the room
thermostat – if fitted – is calling for heat, the boiler will
fire to provide central heating.
●RE-PRESSURING THE SYSTEM
The system will need re-pressurising if both the red and
yellowLED’s areilluminated. Locate the filling valve and
if necessary connect the loop (see fig. 3) slowly open the
valveuntilyouhearthewaterenteringtheappliance. The
redLEDwillgooutfirst,followedbytheyellowLED. Once
the yellow LED has gone out, close the filling valve and
disconnecttheloop. Theappliancemustnotbeoperated
until the system has been re-pressurised. If in doubt
contact your installer.
STATUS INDICATORS

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●TOPPING UP THE SYSTEM
The system will need topping up if the yellow LED is
illuminated. Locate the filling valve and if necessary
connect the loop (see fig.3) slowly open the valve until
you hear the water entering the appliance. Once the
yellow LED has gone out, close the filling valve and
disconnect the loop. The appliance may be operated
whilst the yellow LED is illuminated. If in doubt contact
your installer.
●SHUT DOWN THE SYSTEM FOR SHORT PERIODS
Thesystemcanbeshutdownforshortperiodsbysimply
turning the mode selector to the OFF position. It is also
advisable to turn off the main water supply to the house.
●SHUT DOWN THE SYSTEM FOR LONG PERIODS
Ifthehouseis to beleftunoccupiedforany length oftime
– especially during the winter - the system should be
thoroughlydrainedofallwater. Thegasshouldbeturned
off at the meter and the main water supply should be
turned off at the stopcock. If necessary contact your
installer for further advice.
●CARE FOR THE APPLIANCE
Tocleantheoutercasinguseonlyacleandampcloth.Do
not use any scourers or abrasive cleaners.
WHAT IF…
●I SUSPECT A GAS LEAK
Ifyoususpectagasleak,turnoffthegassupplyatthegas
meter, and contact your installer or local gas supplier. If
you require further advice please contact your nearest
Vokera office.
●IFREQUENTLY‘TOP-UP’OR ‘RE-PRESSURISE’THE
SYSTEM
If the system regularly requires topping-up or re-pressu-
rising, it may be indicative of a leak. Please contact your
installer and ask him to inspect the system.
●THE FAULT LIGHT IS ON
IftheredLEDisilluminateditindicatesthattheappliance
has ‘locked-out’ or has an internal fault. To reset the
appliance, make sure the gas supply is on to the appli-
ance. Turnthe mode selectorswitch tothe OFF position
for a few seconds and then turn it back to its previous
position. If the red LED stays on or is illuminated after a
few seconds call an engineer.
NOTE, if both the red and yellow LED’s are illuminated,
the system requires to be re-pressurised. (See page 4)
●THE APPLIANCE IS DUE ITS ANNUAL SERVICE
Please contact Vokera Customer Services (0870 333
0220 U.K. or 05655057 R.O.I.) if you would prefer a
Vokera service engineer or agent to service your appli-
ance. Alternatively your local CORGI registered engi-
neer may be able to service the appliance for you. If you
are a tenant your landlord will arrange for servicing.
●I NEED TO CALLAN ENGINEER
Ifyouthinkyourboilermayhavedevelopedafault,please
contact your installer or Vokera customer services.
(0870 333 0220 U.K. or 05655057 R.O.I.) Have all your
details to hand including full address and postcode, rel-
evant contact numbers, and your appliance logbook.
●I WANT TO EXTEND THE WARRANTY
Vokera offer extended warranties on all current Vokera
appliances,simply contact customer services (0870 333
0220 U.K. or 05655057 R.O.I.) for further information.
Fig. 3

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MINIMUM CLEARANCES
Pleaseobserve the following minimum clearances required forthe safe operation and maintenance of thisappliance
Above the appliance 150mm 6 inches
Below the appliance 150mm 6 inches
Left hand side of appliance 50mm 2 inches
Right hand side of appliance 12mm _ inches
In front of appliance 600mm 24 inches

Supplied By www.heating spares.co Tel. [phone]

Supplied By www.heating spares.co Tel. [phone]
Vokèra Ltd.
Web. www.vokera.co.uk
Southern Region. Morson Road, Enfield, Middlesex EN3 4NQ. Sales. 020 8216 6300. Fax. [phone].
Parts. 020 8216 6310. Technical Helpline. 020 8216 6320. Customer Services. 0870 333 0220.
Email. [email protected]
Northern Region. Stubs Beck Lane, West 26 Business Park, Whitehall Road, Cleckheaton, West Yorkshire BD19 4TT. Sales. 01274 866100.
Fax. [phone]. Parts. 01274 866140. Technical Helpline. 01274 866110. Customer Services. 0870 333 0220.
Email. [email protected]
Scottish Region. Shuna Street, Maryhill, Glasgow G20 9NW. Sales. 0141 945 6800. Fax. [phone].
Parts. 0141 945 6820. Technical Helpline. 0141 945 6810. Customer Services. 0870 333 0220.
Email. [email protected]
Vokèra Ireland. West Court, Callan, Co. Kilkenny, Ireland. Sales/Parts. 056 55055.
Fax. [phone]. Technical Helpline / Customer Services. 056 55057.
Email. [email protected]
Vokèra Ltd. reserve the right to change the specifications without prior notice. Consumers’ statutory rights are not affected.
Cod. 10020900 - Ed. 1