14
11 Cleaning and
Servicing your
Boiler
The boiler MUST be serviced either
ANNUALLY or when a service is indicated on
the burner control panel display, whichever
comes FIRST. Refer to Section 5.
Servicing should only be carried out by
a Grant trained installer or Grant service
engineer, and details of each service should
be recorded in the Service Log in Section 17
of these User Instructions.
CAUTION
Failure to regularly service the boiler will
invalidate the terms of the Grant product
guarantee.
Failure to maintain a clean flue may result
in the release of flue gases into the dwelling
or damage from potential fire in the flue. It is
therefore essential that your flue is inspected
annually and cleaned as necessary by either
a Grant trained installer or a suitably qualified
chimney sweep.
12 Ventilation
As an ‘open flued’ appliance, your Grant
Spira boiler draws the air it requires for
combustion from the room in which it is
located. In turn, this air comes from outside
via a permanently open air vent (or vents)
correctly sized to meet the air requirements of
your boiler.
WARNING
Any permanently open combustion air
vents in the room containing the boiler
MUST NOT be blocked off or obstructed
in any way. Do not attempt to ‘box in’ the
boiler, or build a compartment around it,
without contacting your installer first for
guidance.
Do NOT place any combustible material
against, around or on the boiler or flue
pipe.
NOTE
Current Building Regulations require that a
Carbon Monoxide alarm (conforming to BS
EN 50291:2001) must be fitted in the room
where the boiler is located.
This should be positioned between 1 and
3metres horizontally from the boiler either:
a) On the ceiling, at least 300mm from any
wall, or
b) On a wall as high up as possible (above
any windows or doors) at least 150mm
from the ceiling.
13 Electricity
Supply
If the electricity supply fails, the boiler will
cease to operate. It should automatically
relight when the electrical supply is restored.
However, it may first burn off any smouldering
pellets still present in the brazier before
starting the lighting sequence again.
If a remote programmer is connected to
your boiler, it may have a ‘battery back-up’
of some kind that will retain the on/off time
settings you previously entered. It may also
resume operation with the correct time of
day and thus require no re-setting of time
and on/off settings when the supply is
restored. Refer to the instructions supplied
with your programmer for further details. It is
recommended that you check that the on/
off and time settings after a power failure has
occurred.
WARNING
The electricity connections to the boiler
must be earthed.
14 Sealed Heating
System
If your boiler is operating on a sealed heating
system, the installer will have adjusted the
pressure in the system and should have told
you (or set it on the pressure gauge) the
system pressure when cold. This is normally
between 0.5 and 1.0 bar, which will increase
slightly when hot. If the pressure (when cold)
is below the set pressure mentioned above,
you can re-pressurize the system. If this
is frequently required, ask your Installer or
service engineer to check the heating system
for leaks and to check the expansion vessel
air charge.
The boiler or system will be fitted with an
automatic air vent to remove any air from
the system. Any trapped air in the radiators
should be removed by venting the radiators
using the vent screw at the top of each
radiator. Only vent a radiator if the top is cool
and the bottom is hot.
Excessive venting will reduce the system
pressure, so only vent when necessary and
check the system pressure as mentioned
above. Re-pressurise the system as
necessary.
The sealed system is fitted with a safety valve
to release excess pressure from the system.
If water or steam is emitted from the end
of the safety valve discharge pipe, switch
off the boiler and contact your Installer for
assistance.
15 Frost
Protection
Your installer may have fitted a frost
thermostat. If not, and you are likely to be
away for a short time, leave the boiler on with
the room thermostat set at a low setting. For
longer periods, the boiler should be turned off
and the system drained down. Contact your
Installer for draining and re-filling the system.
Alternatively, a suitable anti-freeze may have
been added to the heating system water.
Check with your installer.
16 Corrosion
Protection
In order to prevent corrosion within your
heating system and boiler, your installer
should have flushed the system and added a
suitable corrosion inhibitor.
NOTE
The Grant Guarantee on the boiler shell (heat
exchanger) requires that the heating system
is flushed or chemically cleaned, following
installation, and the required quantity of
corrosion inhibitor is added to the heating
system water.
Grant strongly recommends that an in-line
magnetic filter (either a Grant Mag-One or
equivalent*) is fitted in the heating system
pipework.
This should be installed and regularly
serviced in accordance with the filter
manufacturer’s instructions.
*The Grant Mag-One magnetic filter has a
Gauss measurement of 12000.
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