4
STOVE PERFORMANCE & TESTING
MENDIP STOVES Loxton & Churchill stoves are approved and tested in accordance with EN 13240.
Log length
Wood reload
Weight wood load
Coal reload
Weight coal (anth)
Loxton 8
40cm
1hr
2.4 kg
2hr
2.25kg
Churchill 8
40cm
1hr
2.4 kg
2hr
2.25kg
Stove model
Weight & Nominal heat output for Wood and Smokeless fuels
Chimney Connection
In order for the stove to perform satisfactorily the chimney height must be sufficient to ensure an adequate draught to
clear the products of combustion and prevent smoke problems into the room.
Tested Gas flow rates flue
gas temperatures
Flue gas flow rate
Wood /coal
Test flue gas temperature
wood /coal
@ pascals of pressure
Loxton 8/ churchill 8
6.4/5.9 g/sec
307/298deg C
12 pa
Output
wood fuel
Efficiency
CO@13%
o2
Recommended
for smoke control
April 2016
Output coal
fuel
Efficiency
CO@13%
o2
Loxton 8
8.0kW
77%
0.28 Yes / SE model
8kw
82%
0.1
Churchill 8
8.0kW
77%
0.28 Yes / SE model
8kw
82%
0.1
Flue and Chimney connection to your stove (continued)
NOTE: A chimney height of not less than 4.5 metres measured vertically from the outlet of the stove to the top of the chimney
should be satisfactory. Alternately the calculation procedure given in BS 5854:1980 may be used as the basis for deciding
whether a particular chimney design will provide sufficient draught.
If it is found that there is excessive draught in the chimney then either an adjustable flue damper or alternately a draught
stabiliser should be fitted. The adjustable flue damper should not close off the flue entirely but should in its closed position
leave a minimum continuous opening free area of at least 20 % of the total cross sectional area of the flue or flue pipe.
Adequate provision e.g. easily accessible soot door or doors must be provided for sweeping the chimney and connecting flue
pipe.
Combustion air supply
In order for the stove to perform efficiently and safely there should be an adequate air supply into the room in which the
stove is installed to provide combustion air. This is particularly necessary if the room is double-glazed or a flue draught
stabiliser is operating in the same room as the appliance. The provision of air supply to the stove must be in accordance
with current Building Regulations Approved Document J. An opening window is not appropriate for this purpose. Air inlets
must be positioned in such a way that they cannot be blocked. An air inlet may be a vent (the vent must be open and the
capacity for the vent sufficient when the stove is lit) .
There are no European rules regarding the minimum distance to non-flammable walls, Mendip Stoves recommend leaving
a gap of at least 100mm behind and to sides of stove.
Loxton, Churchill and Sqabox models take all combustion from a single 80mm port under the stove, with the door closed
the air port supplies all combustion air for the appliance. This can be connected to the outside via a 80mm pipe so the
appliance does not draw air from the room. However Mendip stoves still recommends the use of an air brick as laid out in
document j for when the stove is being reloaded.
