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OPERATING AND INSTALLATION MANUAL
| WOOD BOILER STOVES AQUAFLAM
BEFORE YOU HAVE THE APPLIANCE INSTALLED AND START USING IT, READ THESE INSTRUCTIONS!
ATTENTION: In order to prevent the risk of a fire hazard, install the wood stove in accordance with the respective building codes and instructions contained in
this operating and installation manual. The installation of the fireplace must be performed by a qualified person. Prior to being put into operation, the appliance
must be approved by a technical inspector and assessed by a chimney professional and a fire safety technician. In order to get the maximum satisfaction and
enjoyment from your wood boiler stove, we recommend that you carefully read the entire manual. The consequences resulting from not adhering to installation
instructions are borne by the user of the wood boiler stove. The installation of the wood boiler stove must be carried out in accordance with this operating
manual. Pay special attention to ensure that you:
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install the individual parts of the wood boiler stove in accordance with their intended purpose,
•
connect the wood boiler stove to a smoke flue pipe and a chimney flue,
•
ensure sufficient ventilation of the room in which the wood boiler stove is installed,
•
connect the wood boiler stove to the central heating and/or hot water heating system.
1. TECHNICAL SPECIFICATIONS
This wood stove with a hot water heat exchanger is designed for heating residential living areas, recreational facilities and work areas, where the intention is
to improve heat comfort complimented by a view of a burning flame.
The hot water system can have either an open or closed configuration and can be designed with an auxiliary circulation pump or as a gravity circulation system
without a circulation pump. It is possible to integrate, for example, a hot water boiler in to the hot water circuit. A suitable solution is also the connection of the
wood stove to the existing heating system with a gas boiler (electric boiler, or other types of heaters).
1. 1. Heating principle
This wood stove is designed for burning wood, eco-briquettes in a burn-through manner, which ensures very good conditions for combustion.
This wood stove delivers a part of the heat output via a hot water heat exchanger to the central heating circuit or single-storey heating. The available residual
heat then heats the air in the room where the wood stove is located. Heating takes place primarily by means of convective heat and partly by radiant heat. This
system can be used to very quickly heat up rooms that are very cold, that have not been heated for a long time.
The principle of convective heating is that the air in a room enters into the stove from underneath and as it rises it is heated up in the convection area that
consists of a double casing of the heater and then flows out through the openings at the top part of the stove and so re-enters the room. Radiant heat comes
from the surface areas of the stove (metal, ceramics, glass). With respect to the construction of the stove, the largest source of radiant heat is the glass door.
1. 2. Construction design
This wood stove is welded together using sheets of metal with a thickness of 2-5 mm. In the central part of the wood stove there is the combustion chamber,
otherwise known as the firebox, that is closed using a door that on certain models is equipped with a self-closing mechanism. The door is glazed with a special
large-area blackened glass that is able to resist temperatures of up to 800 °C.
The inner area of the firebox is paved with firebrick panels. These firebrick panels are not joined using any sealing material in order to avoid damaging them
through thermal expansion and contraction. The top part of the firebox consists of a flue gas deflector plate leading to the draught outlet collar. At the bottom
of the firebox there is a cast iron grate. Under the grate there is an ashtray.
The stove casing is from sheet metal. The Barma model has the addition of ceramic tiles. The steel body of the stove, including the sheet metal casing is
protected by a special heat-resistant paint that is available in various colour combinations.
A part of the stove body is a heat exchanger welded from 4 – 5 mm thick sheet steel (pipes). The heat exchanger is made in two performance lines and is
removable. The removable heat exchanger is screwed on to the stove body from the rear part. In these cases it is possible to remove and replace it with a
deflector plate. This modifies the stove into a full-convection configuration (air heater).
The heating water outlets are located on the rear side of the heat exchanger. The hot water outlet is marked in red. The return (cooler) water is marked in blue.
Attention: The wood stove does not have the character of a continuous combustion heater and is designed for a periodic – interrupted (occasional) mode of operation.
2. THE COMBUSTION PROCESS
2.1. Amount of fuel and setting the combustion process
The burning of wood, eco-briquettes and on certain models of coal briquettes in a wood stove takes place in a burn-through manner, which means that
combustion takes place on the entire load simultaneously. To ensure the optimal conditions for the easy lighting of the fire and the subsequent start of the
burn, it is necessary to deliver a sufficient amount of air, known as primary air, under the burning wood via the grate. With the growing temperature of the flue
gasses, gaseous compounds start to be released from the fuel, which without the supply of additional air cannot do any work in the form of heat energy, and
so it is necessary to supply air at the level of the flame, were the combustion process of these gaseous components can occur and this then usually signals
that primary air is no longer necessary and necessitates the supply of secondary air; tertiary air is also supplied. The supply of secondary air also prevents the
soiling of the glass and serves the glass washing, rinsing function. Tertiary air is designed to improve the overall combustion process. The correct amount and
ratio of air supplied to the correct areas in the firebox improves combustion efficiency and thereby reduces the emission of harmful gases into the atmosphere.
The advantage of the Aquaflam Vario wood stoves is the simple control of all air inlets using a single control element (manual draw bar / electronic – basic
regulation).
2.2. Fuel
It is possible to burn lump wood or briquettes from compacted wood in the wood stove. The moisture content in the wood must be lower than 20%, ideally
it should be 10%. Here the rule applies that the lower the moisture content in the wood the greater is its heating value. The recommended wood moisture
content is achieved by storing wood in a well ventilated wood shelter for a period of at least two years. The moisture content in briquette must be defined by the
briquette manufacturer. Briquettes must be stored in a dry environment otherwise there is a risk that they will fall apart. The recommended size of lump wood
for storage and burning is 3–6 cm in diameter and 20–40 cm in length. It is forbidden to burn coal or coke in this wood stove. Never use flammable liquids as
fuel, or waste such as wallpaper, wood particle boards, plastics, impregnated wood or only wood shavings or sawdust. The burning of such materials is not
only harmful to the environment but also reduces the lifetime of the stove, furthermore may also damage the stove/chimney. Bark that is found on wooden
logs can be burned.
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