English Installation Supplement
Technical Appendix
5. Hearth
5.1 These appliances require a 12mm thick superimposed
(decorative) hearth.
This is also referred to as a Floor Protector Plate or Floor
Protector in the appliance instructions.
If the appliance can be installed in an elevated setting it is
recommended to increase the hearth depth to safely contain
any falling logs or embers. The higher the appliance is
installed the deeper the hearth should be to protect the floor.
5.2 The building must have a suitable load-bearing capacity for
the hearth and appliance. Consult a structural engineer for
advice before proceeding.
5.3 When fitting into an existing hearth check that the appliance
complies with current construction regulations and is at least
the minimum sizes shown.
5.4 If there is no existing fireplace or chimney it is possible to
construct a suitable non-combustible housing and hearth
setting. The flue must be installed in accordance with all
local and national regulations and current rules in force.
5.5 Check if adding a new chimney to your property requires
planning permission.
5.6 Some houses are built using a timber frame construction
with high levels of thermal insulation. Isolate the appliance
from combustible materials, and provide sufficient ventilation
to maintain the heating efficiency.
6. Clearances to Combustible Materials
6.1 When fitting the appliance use the minimum clearances
detailed in the instructions between any point of the
appliance and any combustible material.
6.2 Use of combustible materials near the appliance should
conform to the requirements of the national Building
Regulations - Approved Document J.
For detailed dimensional clearance information refer to
the Appendix contained in the specific product installation
instructions, or product data plate.
6.3 Ensure any flue pipe connected to the appliance has
adequate clearances to combustible materials:
Unless stated by the manufacturers instructions single wall
flue pipe requiresa minimum of 3 x Diameter.
For example 150mm pipe will need a clearance of 450mm.
6.4 Donotplacephotographs,TV’s,paintings,porcelainor
other combustible items on the wall or near the appliance.
Exposure to hot temperatures will cause damage. Do not
place furniture or other items such as drying clothing closer
than 1m from the front of this appliance.
WARNING: Extra fuel should not be stored on or next to the
appliance. Only keep enough fuel for immediate use nearby
and never leave the appliance unattended for long periods
with any combustible material in close proximity.
7. CO Alarms
All open flued appliances can be affected by temporary
atmospheric conditions which may allow fumes to enter
the house. Building regulations require that whenever
a new or replacement fixed solid fuel or wood/biomass
appliance is installed in a dwelling a carbon monoxide
alarm must be fitted in the same room as the appliance.
Further guidance on the installation of the carbon
monoxide alarm is available in the latest edition of
BSEN50292andfromthealarmmanufacturer’s
instructions.
HETAS recommend the unit is permanently fixed
inaccordancewiththemanufacturer’sinstallation
instructions or with the guidance contained in Approved
Document J where no other information is available.
Provision of an alarm must not be considered a
substitute for either installing the appliance correctly
or ensuring regular servicing and maintenance of the
appliance and chimney system.
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