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HOW TO...

2.1

USE THE  APPLIANCE  FOR THE  FIRST TIME

Before switching the appliance on please
familiarise yourself on how to isolate the appliance
from the electricity, gas, and water supplies. If in
doubt contact your installer.

2.2

USE THE MODE SELECTOR SWITCH

Turn the mode selector switch to the OFF position,
switch on the electrical supply to the appliance.
The green LED should be flashing, you may now
select either HOT WATER ONLY or HEATING
AND HOT WATER.

2.2.1

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 reason-
able temperature and flow rate, should you wish
to alter the temperature of the hot water, simply
change the setting of the DHW temperature
selector and/or change the flow of water as it
comes out of the tap. Please consult your installer
for further advice if required.

2.2.2

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.

2.3

RE-PRESSURING THE SYSTEM

The system will need re-pressurising if the red
LED is illuminated and the pressure gauge is
reading below 0.4bar. Locate the filling valve and
if necessary connect the loop (fig. 3) slowly open
the valve until you hear the water entering the
appliance. The red LED will go out first. Go on
with re-pressuring until the pressure shown on
the manometer is between 1 & 1.5 bar (fig. 4).
The appliance must not be operated until the
system has been re-pressurised. If in doubt con-
tact your installer.

2.4

SHUT DOWN THE SYSTEM FOR SHORT PE-
RIODS

The system can be shut down for short periods by
simply turning the mode selector to the OFF
position. It is also advisable to turn off the main
water supply to the house.

2.5

SHUT DOWN THE SYSTEM FOR LONG PERI-
ODS

If the house is to be left unoccupied for any length
of time – especially during the winter - the system
should be thoroughly drained of all water. The
gas should be turned off at the meter and the
main water supply should be turned off at the
stopcock. If necessary contact your installer for
further advice.

2.6

CARE FOR THE APPLIANCE

To clean the outer casing use only a clean damp
cloth. Do not use any scourers or abrasive
cleaners.

1.4.3

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.

1.4.4

APPLIANCE STATUS INDICATORS

The Vokera Compact HE has status indicators
that show if the appliance is working normally, if
it needs ‘topping up’ or re-pressurising, or if it has
a fault (see below).

1.5

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.

1.5.1

BENCHMARK LOG BOOK

The 

Benchmark 

Log Book  is supplied with your

boiler. This important document must be com-
pleted during the installation/commissioning of
your boiler. All CORGI Registered Installers carry
a CORGI ID card, and have a registration number.
Both should be recorded in your 

Benchmark 

Log

Book. You can check your installer by calling
CORGI direct on 01256  372300.
Failure to install and commission the appliance in
accordance with the manufacturers instructions
may invalidate the warranty. This does not affect
your statutory rights .

Fig. 3

control valve

temporary

connection

control valve

supply pipe

double check

valve

flow/return pipe

Fig. 4

 correct

pressure value

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