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It is the law that all gas appliances are installed by
a competent person, in accordance with the gas
safety installation and to the current Gas Safety
(Installation and Use) Regulations B.S.5440:2-(2009).
Do NOT search for gas leaks with a naked ame.
WARNING: This appliance must be earthed.
1.1 INTRODUCTION
Please carefully read the information given in this
booklet to help you gain maximum control from your
appliance with minimum trouble and cost.
Your Arca Condensing Low Nox combination boiler
has been designed to supply your Central Heating and
Domestic Hot Water directly from one unit.
When Central Heating is operating, the circulation will be
interrupted when Domestic Hot Water is being drawn off
(domestic hot water has priority).
This will normally not affect the level of Heating.
PLEASE NOTE:
Due to the high efciency of this appliance and resulting
low ue gas exhaust temperature a white plume of
condensation vapour (cool steam) will be emitted from the
ue outlet terminal, this is quite normal. It will be
particularly evident during periods of low outdoor
temperature or when the boiler is working at its optimum
performance (Plume Management kits are available on
request).
IMPORTANT:
In the unlikely event of the exhaust ue gases exceeding
the overheat temperature setting, the boiler operation will
be stopped to prevent damage to the appliance.
1.2 CLEARANCES AROUND THE APPLIANCE
Side clearance:
The position of the appliance must provide a
minimum clearance of only 5 mm as the side panels
do not require removing for servicing.
However, if the option is preferred to remove the
panels then a minimum clearance of 55 mm is
required.
Top clearance:
The top clearance should be a minimum of
125 mm.
Bottom clearance:
A minimum bottom clearance of 80 mm is
required between the appliance and any surface,
though 150 mm is preferred whenever
possible.
Front clearance:
A minimum of 450 mm is required in front of
the appliance for access during servicing, the
front clearance can be reduced when installed
in a cupboard to 25 mm from the access door.
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USER CONTROLS
This appliance is designed to operate with the minimum
of ease for the user. All the controls are found on the
control panel on the front of the boiler.
1.3 OPERATING SAFETY CHECKS TO PROTECT
YOUR APPLIANCE (CHECKING THE SYSTEM
PRESSURE)
Before lighting the appliance check that the Central
Heating system pressure is not less than 1 bar. If it
is below this it will be necessary to re-pressurise the
system, between 1 and 1.5 bar to allow the boiler to
operate. To view the system pressure press the INFO
button once, this will display the current pressure (if the
pressure is on nil or too low, then error code 08E is
displayed).
A lling device (lling loop) will have been tted on the
system.
This is usually on the pipework near to the boiler. If you
are unsure of its position, or you cannot identify it, consult
the installer who tted the boiler.
The lling loop usually consists of two taps and a
separate silver coloured braided exible pipe with
connection ttings. Only when re-pressurising should the
braided exible pipe be connected between the two taps,
ensure that the nuts or the pipe ends are tightened
onto the taps.
Fully open one of the taps rst and then while monitoring
the water pressure on the digital display, carefully open
the second tap. When the water pressure is to a
maximum of 1.5 bar turn both taps off.
Disconnect the exible pipe from the taps (a small
amount of water may be present).
Keep the pipe in a safe place for future use.
Press the ESC button once to return to the main screen.
In the event of an error, the appliance will show a
sequence code displayed on the digital display of the
control panel (g. 1). By pressing the “RESET“
button it is possible to relight the boiler (see page 52
and 53 for list of error codes).
1 USERS GUIDE
