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Reference: Ottawa 12kw Operating
Instructions Version 1 04/06/15
Installation and Operating
Instructions
Wood-burning Stove
Model: Ottawa 12kw
Size: W580XD410XH610MM
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INTRODUCTION
Wood-burning Stove
Item No.: Ottawa 12.3kw
Size: W580XD410XH610MM
SAFETY
Safety is the most important consideration when using and installing your stove. If not installed
and used correctly, a house fire could result. Installation must comply with relevant national
and local Building Regulations and fire safety standards.
IN THE EVENT OF A CHIMNEY FIRE, EVACUATE THE PROPERTY AND CALL THE EMERGENCY
SERVICES.
Your stove will be heavy and care needs to be taken when lifting - 2 people will normally be
required to lift.
UNPACKING
Your stove will have several of its components stored inside the stove itself for transportation.
Take the legs out “cast iron stove only” and attach them one at a time to the underside of the
stove – it may help to sit the stove on some sturdy blocks of wood or bricks whilst you do this.
Do NOT use a wrench to tighten any bolts, they should be hand tight
only – cast iron is relatively brittle and can crack if over-tightened.
Do NOT drag the stove on its legs – it must be carefully lifted into place.
The flue spigot can also be bolted to the flue outlet – the stove has two options for flue outlet –
one on the top and one at the rear. - Most people use the top outlet – in this case, remove the
blanking plate at the top and secure to the rear outlet instead, but depending on where you
intend to position the stove in relation to your chimney, you may wish to use the rear outlet.
Inside the stove will also be an ash-pan which sits underneath the grate, and will require
regular emptying. You will also find a detachable tool for removal of the ash-pan.
You will also find a glove which must be used when opening the door or when adjusting air
vents when the fire is hot.
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Baffle Plate
The baffle plate sits above the rear cast iron fire brick and comes to rest just above the top air
flow control. The end of the plate with rectangle holes cut in the end sits towards the front of
the unit.
INSTALLATION
Installation of your stove must comply with relevant local and national Building Regulations and
fire safety standards.
TECHNICAL
Ottawa 12.3 kW - Performance Test Results.
All efficiencies in table are Net values
Wood Results, 1 hour refuels
Parameter Mean
Test Duration h 1.00
Total Efficiency 76.1 %
Nominal heat output kW 12.3
Mean CO emission (at 13 % O2) 0.35%
Mean flue gas temperature ºC 396
Flue gas mass flow g/s 7.2
Mean CnHm (at 13 % O2) 504
Mean NOx (at 13 % O2) 55
DIN Plus dust (at 13 % O2)s 6.0
Manufacturer’s declarations Refuelling period 1 hour
Nominal output 12.3 kW
Temperature Safety Test
Distances to combustibles: Back Wall 850 mm
Side Wall 850 mm
Max hearth temperature.
Nominal output 123°C
Temperature safety 111°C
The hearth temperature exceeds 100c therefore appliance should be installed on a
constructional hearth as described in building regs document J.
Stove Weight 120kg
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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.
Normally for most houses in the UK no extra ventilation is required when installing a stove rated
at 5kW or less. The output is above 5kw on this stove therefore a permanent air vent is
required – A permanent air entry opening with a total free area of at least 550mm2 per KW of
rated output above 5kw. As stipulated in document J.
Note: The requirements regarding ventilation have been updated in the most recent version of
the Building Regulations and are now based on the air permeability of the house. 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, 6” diameter is required. The flue pipe must be fitted INSIDE the
flue spigot, and sealed with a generous amount of Fire Cement.
Access should be provided for cleaning the flue to ensure that the passageways for exhaust
gases remain free from obstruction. 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 – www.hetas.co.uk.
OPERATING INSTRUCTIONS
Regulations
All national and local regulations, including those referring to national and European
standards, need to be complied with when installing the stove.
FUEL
Wood- All types of wood are suitable provided they are well seasoned, UNTREATED, and have
a moisture level between 12% and 20%. For soft woods, typically they will need to have been
left in suitable storage for 9+ months in order for the moisture to evaporate. For hardwoods,
this will usually be 18 months+. It is recommended that logs should be no more than 5” or
125mm in diameter. If you are unsure of the moisture content of your fuel, then you can
buy a moisture meter which will indicate the moisture levels in your fuel. Liquid fuels must
NEVER be used.
WARNING: Wet timber should not be used as this will create excess tar deposits in the chimney
and stove and could increase the risk of chimney fire. Timber which is not of a suitable moisture
content will also create more smoke and harmful emissions, and will damage the stove and flue
system.
AIR INLET CONTROLS
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Your stove has three air inlet areas. The upper vent provides air supply for the air-wash system
and allows air into the higher areas of the fire box – this is called the Secondary air – when this
vent is open, the door glass is kept clean by high speed air rushing downwards across the inside
of the glass. By moving the Secondary vent knob to the right, airflow into the stove is increased.
The secondary air vent is set such that the closure plate does not seal fully, thus allowing some
constant air supply into the stove.
The lower vent knob on the bottom of the door controls the provision of Primary air – this is the
primary source of air supply for combustion. Sliding the knob to the right increases the amount
of Primary airflow into the stove. The third (Tertiary) vent control is located underneath the
stove and controlled by a lever/ knob tucked under the
bottom shelf. Moving the lever towards you increases the airflow into the stove. The air is then
channelled through a
chamber on the rear of the stove and to the rear of the firebox, and enters the firebox via a
series of small holes in the throat plate. The closure plate mechanism on the rear of the stove
incorporates a ‘stop-bolt’ – a physical stop to ensure the Tertiary air inlet vent cannot be fully
closed. This is required to ensure the stove maintains a level of combustion not likely to create
excessive smoke.
TOOLS
The glove is provided for adjusting the air inlets and for opening the door when the stove is hot,
as these knobs will heat up when in use. The tool handle provided is for removing the ash-pan.
NOTE – all parts of the stove will become hot during use and care needs to be taken to avoid
injury through burning.
LIGHTING THE FIRE AND RE-FUELING
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ade.
any applicable local regulations as well as these installation instructions.
een tested at
nominal output with a flue draught of 12 Pa) INITIAL CURING AND TEMPERING FIRES
ESSENTIAL INSTRUCTIONS BEFORE USE – It is essential to follow these ‘tempering-in’
instructions in order to avoid serious damage to your stove. The castings of your stove require
very gentle ‘normalising’ to release stresses in the metal formed during the casting process.
The paint finish also requires an initial curing process to be followed: -
For the initial tempering/ curing period, ensure the tertiary air inlet is set to MINIMUM, by
sliding the lever to the ‘Minus’ position. Set the Primary air to half position and secondary air to
half position. For the first 2 burns on day one just use small controlled kindling wood fires with
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each fire lasting around 40 minutes – the second fire can be started when the stove is almost
cooled down after the first. A third slightly hotter medium type fire should then be lit using
smallish logs and lasting around 1 hour. Then for the next week or around 15-20 hours total
burn time, fires must be gently increased in temperature and log size and load and NO COAL
must be used during this period. A stove thermometer will be a valuable tool in helping you to
achieve this safely and also to ensure an efficient burn rate in future. Starting a large fire too
soon is likely to damage the stove in which case it will not be covered by the warranty. Note:
the paint on any new stove is relatively soft. As such do not clean, wash or
wipe the surface until the paint has fully cured. Never wipe the stove whilst warm. If the above
advice is ignored then there is a high risk of the paint being “shocked” by excessive heat and
could peel. Furthermore, if the stove is over fired it will invalidate your guarantee.
ENSURE THAT YOU HAVE READ AND UNDERSTOOD THESE INSTRUCTIONS BEFORE
LIGHTING THE FIRE, AND THAT YOU ARE CONFIDENT THE STOVE HAS BEEN INSTALLED
CORRECTLY.
ALWAYS WEAR A PROTECTIVE GLOVE WHEN REFUELLING YOUR STOVE.
Ignition (FOLLOW INITITAL TEMPERING INSTRUCTIONS ABOVE FIRST TO AVOID DAMAGE)
-pan is in place. Ensure all air inlets are fully open (tertiary air should be closed
for first 3 burns)
-5 minutes as the fire starts to die, add a further three larger pieces of wood
weighing approx. 0.75kg in total.
up to 1.4kgs in total can be added (ONLY AFTER THE INITIAL TEMPERING PERIOD HAS BEEN
FOLLOWED – SEE ABOVE)
he Primary air vents can be closed, with the Secondary and
Tertiary vents left open.
First use troubleshooting.
When the stove is new the paint is very tacky where the stove is curing. The door locks very
tight and when opened can pull away the fire rope from its chamber. If the instructions are
followed above this should not happen. However if it does the rope will need to be stuck back in
place with “heat resistant fire rope glue” After a few burns the paint will be cured and this
should no longer happen.
Refuelling
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When re-fuelling the stove it was necessary to fully open both the primary and secondary air
controls for a period of 3 minutes to establish the fire before closing down to the minimum
output setting.
ll require refuelling approximately every hour.
d to maximise
the efficiency of the stove
harged logs
-establish the fire and follow
the “Ignition” procedure above.
n rates can be achieved by reducing the openings of the Secondary and Tertiary
air vents.
– If there is insufficient burning material in the firebed to light
a new fuel
charge, excessive smoke emission can occur. Refuelling must be carried out onto a sufficient
quantity of
glowing embers and ash that the new fuel charge will ignite in a reasonable period. If there are
too few embers in the fire bed, add suitable kindling to prevent excessive smoke.
Fuel overloading - The maximum amount of fuel specified in this manual should not be
exceeded, overloading can cause excess smoke.
Operation with door left open – Operation with the door open can cause excess smoke. The
appliance must not be operated with the door left open except as directed in the instructions.
The Ecosy+ 12kw stove is suitable for use in smoke control areas when used in accordance
with these instructions.
WARNING- The high temperature paint covering the stove will give off some fumes during the
initial few uses of the stove. The fumes are non-toxic, but some people may find them
unpleasant – Ensure the area is well ventilated during this period. The higher power output
rating of this stove is based on around 1.4kg of seasoned logs which would require refuelling
every hour.
This stove is suitable for intermittent burning, and should not be used constantly for extended
periods. Under certain abnormal weather conditions, e.g. down draughts, it may be difficult to
get sufficient draw through the appliance to achieve good combustion. When this happens, the
stove should not be used.
IMPORTANT: -
As of October 2010, it is a legal requirement to use a Carbon Monoxide Detector in the same
room as the stove. This needs to incorporate a battery which lasts the life of the detector.
CLEANING/MAINTENANCE
Regular cleaning of the stove is essential for safety and efficiency. The ash-pan should be
emptied at least after every use, and during use if burning for longer periods.
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When cold, the inside of the stove should be given a regular sweep out.
The flue and flue pipe will require cleaning with a suitable chimney brush, to minimise build up
of soot and tar. Your chimney will also require periodic sweeping.
If the glass becomes stained from the inside, the air-wash vent may need opening more during
use.The high temperature paint which your stove is finished in should last many years with
normal use, but when it does eventually require re-finishing, black heat resistant paint in spray
cans can be purchased from most hardware stores. – Do not use regular paint which is not high
temperature resistant. After prolonged periods of not using the fire, the stove and flue system
should be checked for blockages prior to relighting. We recommend regular servicing and
safety checks are carried out by a qualified engineer. There must be no unauthorised
modification of the appliance. Use only replacement parts recommended by the
manufacturer.
MODELS WITH MIRROR GLASS: THIS GLASS HAS A SPECIAL COATING, DO NOT USE ANY
ABRASIVE MATERIAL TO CLEAN THE GLASS. Just use a clean cloth with warm water when the
stove is cold. If fire bricks have just split they do not need replacing. The bricks only need
replacing when they have fully crumbled away exposing the stoves rear or sides.
GUARANTEE
The main body of your stove is guaranteed for 5 Years. This does not include glass, grates,
door seals, over-firing, and paint.
Incorrect use or installation not carried out by a registered HETAS installer will void the
guarantee. Please keep hold of the invoice as this will be requested if a claim started. The
guarantee will begin from the sale date on the invoice.
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Ecosy+, Unit 24 – Folly farm, Ramsdell, Tadley, Rg265rj
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