Woodfire EVO 20 Specification sheet

EVO Operation and Installation Manual
Applies to the: EVO 20, EVO 30, EVO 30 Panorama, EVO LD 20, EVO LD 30, EVO LD 30 Panorama
Evo Manual Version 1.1, January 2015

Table of Contents
1 Welcome.............................................................................................................................2
1.1 Structure of the wood burner ......................................................................................2
1.2 Packaging ...................................................................................................................2
1.3 Assembly of the wood burner .....................................................................................2
1.4 Technical S ecifications...............................................................................................3
1.5 Common Details ..............................................................................................................5
2 Installation, chamber clearances and hearth......................................................................5
2.1 Installation chamber.....................................................................................................5
2.2 Hearth..........................................................................................................................6
2.3 The Chimney................................................................................................................6
2.4 Connection of the heating system ..............................................................................7
2.5 Connection of the over heat safety valve ...................................................................8
2.5.1 Testing the safety heat exchange ........................................................................9
2.6 Commissioning............................................................................................................9
2.6.1 General information............................................................................................10
2.6.2 Physical checks..................................................................................................10
2.6.3 Smoke test for chimney soundness...................................................................10
2.6.4 Smoke evacuation test.......................................................................................11
2.6.5 Lighting the a liance........................................................................................12
2.6.6 Handover............................................................................................................12
3 User o eration...................................................................................................................13
3.1 O eration notes ........................................................................................................13
3.1.1 When used on a boat, never:.............................................................................14
3.2 Initial heating u ........................................................................................................14
3.3 Normal o eration.......................................................................................................15
3.4 Safe storage of fuel....................................................................................................16
3.5 Actions in case of fume emission..............................................................................16
3.6 Actions in case of a chimney fire ..............................................................................16
3.7 Advice on fitting suitable alarms................................................................................17
3.8 Performance .............................................................................................................17
4 Maintenance and Cleaning ..............................................................................................17
5 Common fault finding........................................................................................................18
Page 1

1 Welcome
Dear Customers,
We thank you for your confidence extended to us through the urchase of this wood
burner. Please read this o erating manual carefully in order to insure a safe and sensible
handling of the burner. Thus, you may revent otential damages in advance and achieve
a faultless functioning of the burner for many years.
This burner may only be o erated in a suitable environment. E.g. the usage is rohibited in
rooms where work is carried out with solvents, flammable adhesives or coating agents.
The following materials are suitable for burning in this wood burner: wood and wood-
briquettes with a residual humidity not exceeding 20%. Please take care that this level of
humidity is not exceeded, as the burner may otherwise lose a considerable amount of its
erformance, and ermanent damages may occur.
1.1 Structure of the wood burner
This burner is com osed of a welded boiler-steel, or res ectively, cast iron casing. An ash
grate is located on the furnace floor, with an ash container below. The combustion
chamber cladding consists of refractory clay or cast-iron lates. In the chimney duct is a
deflector late which is essential for an o timized flow of the exhausts. The furnace door is
equi ed with an ins ection window which is es ecially designed for the use with high
tem eratures. The combustion chamber is fed with both rimary and secondary air intake.
The rimary air intake enters the chamber below the grate – and thus serves as a
erformance regulator. The secondary air intake is re-heated and serves the combustion
of residual gases, while ‘washing’ the interior ins ection window in the combustion
chamber, thus reventing the build-u of ash residue.
1.2 Packaging
The wood burner is delivered on a wooden alette in an assembled condition.
1.3 Assembly of the wood burner
In order to avoid damage due to trans ort as much as ossible, the assembly should be
conducted at its lace of destination. Should the burner be installed on a floor made of
easily flammable material, then a fire resistant base has to be used.
For lift door versions, the stove is delivered with the door u in the metal housing. 6 travel
bolts need to be removed from either side of the canter lever mechanism rior to
installation.
When lacing the burner, lease ensure the sufficient strength of the floor, and that it is
non-flammable.
Page 2

1.4 Technical Specifications
Page 3
Illustration 1
Table 1

Page 4
Table 2
Illustration 2

1.5 Common Details
Max o erating ressure 1.5 bar
Fuel Wood
Flue gas tem erature at nominal out ut 230°C
Required flue draft 10.0 – 15.0 Pa
Constructional hearth required Yes
Testing standard EN 303-5:1999
Table 3
2 Installation, chamber clearances and hearth
The stove MUST be installed by a com etent erson or com any qualified to
install solid fuel a liances with a boiler (e.g. HETAS) in line with local Building
Regulations such as A roved Document J for England and Wales. Failure to
com ly with this may result in void roduct warranties.
Failure to com ly with this manual and local building regulations may also result in
fire or carbon monoxide oisoning; however, any installation does not guarantee
against such occurrences in all circumstances.
2.1 nstallation chamber
The chamber can be made out of masonry (blocks or bricks) or Thermalux.
Ensure there is a minimum ga of
2 - 3mm between the firebox and
the side wall at the frontal area of
the boiler stove.
A minimum ga of 50mm must be
maintained around the a liance.
There should be no combustible
fixtures or furniture other than the
floor and it's covering within
1,000mm of the front of the
a liance.
If using a direct air su ly i e
then additional s ace will be
needed in the chamber.
The su ly of fresh air is
absolutely essential to the burner
installation. The air intake i e diameter needs to be at least the size of the air intake
connectors at the back of the a liance. If the i e is longer than 1,000mm, or there are
Page 5
Illustration 3

offsets, then the i e diameter needs to be increased.
Sufficient incoming air in the installation room for combustion must be observed. Building
Regulation Document Part J require that a fixed air su ly from the outside should be
installed into the room where the stove is sited for the combustion air (Refer to Part J,
Section 2, Table 1: Air su ly to solid fuel a liances).
Forced-air ventilation systems, extractor hoods or similar a liances which are installed in
the same area as the stove will result in an increased demand on the incoming air su ly.
In such cases, lease ensure that there is sufficient air able to enter the area to su ly the
stove and other a liances.
Attention should also be aid to having room in the stove chamber for any i ework, the
load unit etc. Serviceable arts of the system should be sited outside of the chamber or
a ro riate rovision made for access.
End users should be strongly recommended to fit a smoke alarm and be guided to fit a
carbon monoxide alarm in accordance with BS 8511:2012 (Annex C.5)
2.2 Hearth
The sub-base and hearth must be able to carry the full weight of the boiler stove. The
stove should be ositioned on or above a non-combustible hearth and the hearth should
extend a minimum of 300mm in front of the stove door.
If the stove is raised u and the hearth is to be at floor level then we recommend that you
increase the de th of the hearth to ensure that any embers that accidentally fall from the
stove land on the hearth and not the floor. Please refer to Building Regulations A roved
Document J for more s ecific details
2.3 The Chimney
The chamber should be closed off above the stove with a concrete slab, lintels or fire roof
stud work.
The following chimney designs are ossible:
•Brick wall chimney: This should be lined with umice liners (not clay liners) of the
correct diameter and the starter block should be set on the slab. The stove is then
connected to the starter block with an adjustable length of single skin flue.
•Assembled steel insulated chimney: The hole in the chamber roof should be a good
fit around the i e using a fire sto late.
•Stainless steel flexible liner (suitable for solid fuel, either 316 or 904 grade liners):
The liner should be insulated. The stove should connect to the a liance via a
length of rigid flue at least 500mm long. The liner should be firmly fixed to the
chimney wall with a bottom su ort bracket or, if that isn't ossible, then every i e
connection, including the connection to the stove, should be secured with at least
two stainless steel self-ta ing screws. The flexible liner should be insulated. The
chimney should be fitted with a cowl or a ro riate chimney ot to revent rain
entry.
Page 6

2.4 Connection of the heating system
Installations should always be carried out by a com etent erson. Please ensure
that the heating system is thoroughly cleansed before connecting the boiler. Failure
to do so could invalidate the warranty.
NEVER o erate the burner without connection to the heating system, as this may
lead to irre arable damage to the water container of the burner.
BS EN 12828 and BS EN 14336 s ecify requirements and give recommendations on good
ractice involved in the general lanning, designing, installation and commissioning of
forced circulation hot water central heating systems, and should be used where
a ro riate.
The intended heating system can be laid out as an o en or closed heating system. In any
case a sufficient overheating safeguard at the burner needs to be secured.
If installed on a closed ( ressurised) system, a ressure relief valve should be installed in
the water circuit as close as racticable to the a liance and in a osition where it would
vent safely, along with an over heat safety valve (see section 2.5).
If installed on an o en vented system, the feed and ex ansion tank must be manufactured
to BS 4215, and be designed to withstand the 500-hour boil test without leaking or
colla sing. It should be installed as high as ossible, in the highest art of the circuit and
as near as ossible to the boiler.
A means of dissi ating heat, e.g. a radiator fed by gravity, should be rovided so that heat
can be dissi ated in cases where the um fails or is not switched on and the a liance
continues to roduce heat.
The water in the central heating system should contain suitable antifreeze to give frost
rotection. After a eriod of inactivity, on no account should the a liance be lit until it is
ensured that there is a free flow of water through the central heating and hot water
systems. The use of a return-flow-elevation or a three-way-valve (such as an LK 810
ThermoMat W Eco load unit) with an adjusted minimum tem erature of 60°C is essential
to ensure the stove burns cleanly and efficiently. The maximum o erating tem erature is
90°C. The maximum o erating ressure may not exceed 1.5 bar.
At the lowest oints of the heating system an outlet valve needs to be installed.
Illustration 4 is a suggested ty ical lumbing schematic showing the boiler stove
connected to a ressurised thermal store. The ositioning of the i es for the heat leak
radiator around the load unit is very im ortant. In the LK 810 ThermoMat range, the
gravity circuit fla grub screw should be removed to allow circulation around the heat leak
radiator in the event of ower failure.
Page 7

2.5 Connection of the over heat safety valve
The burner is fitted with a safety heat exchange coil
(Connection no. 5 on illustration 1 or illustration 2) which in
the case of overheating, facilitates an easy and safe
reduction of excess heat. The safety heat exchange consists
of a co er coil in the inside of the water jacket. During the
installation of the burner this co er coil needs to be
connected via the connections on the to with a cold water
connection and a waste water connection.
The regulation of the cold water intake needs to be secured
via a thermal safety valve (such as the Watts STS Thermal
safety drain valve). The sensing element of the thermal
drainage safety mechanism needs to be connected to the destined o ening at the burner.
The Installation of the thermal safety valve has to be executed by an authorised and
Page 8
Illustration 5
Illustration 4

com etent com any. The i e ressure of the connected cold water has to be at least 2
bar and may not exceed 4.5 bar. Ensure a minimum assage of 20 l/min. A water filter
needs to be installed in front of the valve intake in accordance with EN 13443. The sensing
element of the thermal safety valve may need to be installed with an extension (1/2” x 40
mm [Connection no. 3 on illustration 1 or illustration 2]).
Please have the erformance reliability of the safety heat exchange tested annually by an
authorised and com etent com any.
2.5.1 Testing the safety heat exchange
Test the safety heat exchange by tem orarily overheating the burner to a boiler
tem erature >97°C.
Where this is not ossible, conduct the following alternative check:
1. Remove the thermostat of the thermal safety valve sensing element from the burner
2. Di the thermostat in a container with water
3. Bring the water in the container to the boil by heating
4. The valve should now allow the inlet of cold water into the coil in the boiler
Risk of injury due to hot water.
If this check fails (the thermal safety valve does not o en or does not close
sufficiently later), The sensing element must be exchanged. Attention! It is not
ermissible to conduct any mani ulation of the thermal safety valve and the safety
heat exchange coil.
We recommend having a service check conducted by a com etent com any rior to the
heating season. Where the burner is used only tem orarily and where unfavourable winds
or climatic conditions are resent, greater care during initial o eration is essential. After a
rolonged eriod without firing u the burner, a check of the o enness of the flueways is
necessary. During o eration the surfaces of the burner are very hot; therefore lease use
rotective gloves when handling the device.
Su ervise small children when they are resent in the room where the burner is installed.
Only original re lacement arts and accessories may be used for the burner.
2.6 Commissioning
The a liance and chimney installation should be tested by a com etent erson before
final handover to the user or client to ensure that it is safe, fit for use and ca able of
roviding the ex ected erformance and service, in accordance with the method stated
below.
The tests and checks given in 2.6.1, 2.6.2 and 2.6.3 should be carried out before the
a liance is lit for the first time.
Page 9