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.
