2
TECHNICAL
Parameter
ST2
ST4
Useful Heat Output Range, kW:
2-6
3-8
Nominal Heat Output, kW:
5.0
7.2
Efficiency at Nominal Output, %:
79.2
76.7
Mean CO emission (at 13 % O2), %:
0.07
0.06
Mean flue gas temperature, °C:
283
346
Flue gas mass flow, g/s:
4.2
5.6
Mean CnHm emission (at 13 % O2), Nmg/m3:
57
37
Mean NOx emission (at 13 % O2), Nmg/m3:
79
114
DIN Plus particulates (at 13 % O2), Nmg/m3:
16
22
Minimum distance to combustible Back Wall, mm:
500
500
Minimum distance to combustible Side Wall, mm:
450
500
Suitable for 12mm hearth
✓
Constructional
hearth required
5
”
/ 125mm flue size
✓
✓
DEFRA Exempt for burning wood in Smoke Control
Areas
✓
✓
EcoDesign 2022 Ready
*
✓
✓
The ST models have all passed the testing standard required for EcoDesign when burning wood logs.
The stove must not be installed within the specified minimum distances to combustible materials as shown in
the table above. Adjacent walls should be of non-combustible materials and construction, preferably masonry
or brickwork.
When installed inside a fireplace recess (with solid non-combustibles walls) we recommend a minimum 50mm
clearance at the sides and rear of the stove to allow good air circulation and achieve best performance.
Your stove will require a constant air supply and should not be used at the same time and in the same
room/space as extractor fans or any device which may draw air supply away from the stove.
The stove should be installed on a level floor with adequate load bearing capacity.
The stove needs to stand on a hearth of non-combustible materials not less than 12mm thick conforming to
Building Regulations.
A Carbon Monoxide detector must be fitted in the same room as the appliance.
NOT suitable for installation in a shared flue system.
If installed in a standard type chimney, a register plate needs to be fitted inside the chimney.
When purchasing flue pipe, 5” diameter is required. The flue pipe must be fitted I
NSIDE the flue spigot and
sealed with a generous amount of Fire Cement.
We recommend that you have a qualified fitter install your stove. The British recognised standard for solid
fuel installations is HETAS. You can find a HETAS qualified installer in your area by going to the HETAS website
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