©
EUROHEAT
DISTRIBUTORS (H.B.S) LTD. Jan 2012
E&OE Instructions Part number IN1273 Ed A
8
Model
Flue Size
Air Requirement
Equivalent Area as
Approved Document J
Efficiency
Net %
Weight
WIKING MIRO 1/3
6” (153 mm)
see below
78.0
84kg/104kg
Model Name
Heat Output
Nominal
Wood
Flue
Draught
Nominal
Heat
Output
Flue Gas
Temperature
degrees C
WIKING MIRO
4.9 kW
12pa
285
* Air requirement equivalent area. Building regulations Document J, advises that an air supply should
be installed for appliances with a heating output over 5kW. Document J indicates that there should be
sufficient advantageous air for heating outputs below this amount. With modern properties this may
not always be the case and/or more free air may be required. Continuous or intermittent operation will
result in different heating outputs due to the nature of the fuel and the appliance. If in doubt increase the
suggested area listed or contact your HETAS approved engineer for assistance.
The Clean Air Act 1993 and Smoke Control Areas
Under the Clean Air Act local authorities may declare the whole or part of the district of the authority
to be a smoke control area. It is an offence to emit smoke from a chimney of a building, from a furnace
or from any fixed boiler if located in a designated smoke control area. It is also an offence to acquire
an “unauthorised fuel” for use within a smoke control area unless it is used in an “exempt” appliance
(“exempted” from the controls which generally apply in the smoke control area).
The Secretary of State for Environment, Food and Rural Affairs has powers under the Act to authorise
smokeless fuels or exempt appliances for use in smoke control areas in England. In Scotland and Wales
this power rests with Ministers in the devolved administrations for those countries. Separate legislation,
the Clean Air (Northern Ireland) Order 1981, applies in Northern Ireland. Therefore it is a requirement that
fuels burnt or obtained for use in smoke control areas have been “authorised” in Regulations and that
appliances used to burn solid fuel in those areas (other than “authorised” fuels) have been exempted by
an Order made and signed by the Secretary of State or Minister in the devolved administrations.
The WIKING MIRO range of stoves has been recommended as suitable for use in smoke control areas when
burning [fuel].
Further information on the requirements of the Clean Air Act can be found here :
http://smokecontrol.defra.gov.uk/
Your local authority is responsible for implementing the Clean Air Act 1993 including designation and
supervision of smoke control areas and you can contact them for details of Clean Air Act requirements.
Technical Details Intermittent Operation
Intermittent operation is when the appliance is used for short firing periods for example 45 minutes to
2 hours. This is a common operation in warmer weather such as cold spring evenings. The information
provided below where indicated as HETAS approved is from the current CE standards EN 13240:2001 and
EN 13240 A2:2004. The test fuel is wood.