Operation Manual
4.2 FLUE TERMINAL POSITION
• The boiler MUST
be
installed so that the terminal
is
exposed to the external
air.
• It
is
important that the position
of
the terminal allows free passage
of
air
across it at all times.
• Where the terminal
is
fitted
in
a position to which children, the elderly, or
disabled people have access (less than 1.5m above steps, decking or ground),
a suitable terminal guard should
be
fitted.
•
In
certain weather conditions the terminal may emit a plume
of
steam.
•
It
is
ESSENTIAL TO ENSURE, that products of combustion discharging from
the terminal cannot re-enter the building, or vehicle, through ventilators,
windows, or other sources of natural air infiltration, such
as
other flues etc, with
the exception of doors, but not the opening windows thereof.
• The minimum acceptable dimensions from the terminal to obstructions and
ventilation openings
is
as follows:
Directly below
an
opening fixed vent, windows, etc.
300mm
Adjacent to
an
opening fixed vent, windows, etc. 300mm
Below gutters 75mm
Below eaves
200mm
From a vertical drain pipe or soil pipe 75mm
From
an
internal or external corner 300mm
Vertically from a terminal
on
the same wall
1500mm
Horizontally from a terminal
on
the same wall 300mm
For domestic and Park Home applications please refer to BS5440.
4.3 MINIMUM CLEARANCES
• Minimum clearances of 25mm
on
each side and the front of the boiler must
be
observed. However full access from the front
in
the form of
an
opening door,
must
be
given to allow access to the controls
and
for servicing.
• 200mm above the top
of
the boiler case
is
required for the flue assembly.
• 300mm
is
required below the boiler to allow easy access to the gas isolation
cock and filling loop.
• If the boiler
is
to
be
installed into a small cupboard or compartment (i.e. at the
minimum clearances) and overheating can
be
foreseen (i.e. close proximity
to another heat source such as a cooker or fire) it
is
recommended that
ventilation
be
installed
in
the cupboard for cooling. The following table gives
the minimum effective areas
of
the vents:
16