4
In this case, it is necessary to calculate the dimensions of the chimney!
D) Supply of combustion air directly from outside. If combustion air is directly supplied through the outer wall, it shall be
only be slightly preheated, which is unfavorable for a clean combustion. In this case there is also risk of condensation!
NOTE: We do not recommend these versions of air supply! However, if you use these options, consult a qualified
professional.
In the room where the heating device is installed, it is necessary to ensure sufficient supply of fresh air. If the windows and
doors are hermetically sealed or if there are air-extracting devices, such as hoods, hair dryers, fans etc., in the room where the
range is installed, combustion air (fresh air) must be supplied from outside. In any case, this should be discussed with a
competent chimney sweep before installing the range.
Supply of fresh air in the room where the range is installed
6.
CONNECTING TO CHIMNEY
Inspect the unpacked stove and study the stove parts and accessories, and in particular, make sure that:
-
asbestos-free sealing wires, which ensure tight sealing and prevent uncontrolled entry of air, are fitted in special
ducts of the firebox door, ash pan, cleaning access plate and cooktop frame,
-
combustion regulator (thermostat) correctly opens and closes the thermostat damper (Fig. 1, Item 19), by using the
regulation knob (Fig. 1, Item 10),
-
grate holder (Fig. 1, Item 13) is properly fitted on its supports and that it is easily opened.
Place the chimney connection (collar), which is delivered together with the stove and placed inside the wood box, and
screw it on the outlet on the cooktop or on the side outlet. First remove the cover and use the same screws to fasten the
collar.
NOTE:
If your chimney is of unsatisfactory or dubious quality, we recommend that you attach the collar on the cooktop outlet and
not on the side outlet.
The stove will reach its nominal heating capacity if the draft in the chimney is 20 Pa. A chimney ensuring good draft is the
basis of proper functioning of the stove. The chimney not only affects the stove’s output, but also the combustion quality.
Chimney draft directly depends on the chimney’s cross-section, height, internal wall roughness and the difference between
the temperature of gas and external air. We recommend the following chimney sizes that ensure good draft:
Stove type
Nominal heating capacity
(kW)
Chimney height (m)
5
6
7
8
9
ALFA
TERM 27
wood
Clear opening dimensions (mm)
27,56
Ø200
145x200
Ø160
145x145
Ø160
145x145
Ø160
145x145
-
Having a properly operating chimney and observing other requirements with respect to the material specified below,
ensures flawless stove operation.
-
If chimney draft exceeds 20 Pa, install a damper inside the flue pipe.
-
Chimney connection should be vertically positioned.
-
Horizontal pieces of flue pipes over 0.5 m long should slope upwards by 10
toward the chimney.
-
Flue pipe connection, flue pipes and chimney may not taper.
-
All joints, including the chimney, must be well sealed and there must be no soot or dirt inside the flue pipes.
-
Protect the chimney from the cold (thermally insulate the chimney). This specially refers to chimneys made of metal
sheets or chimneys built on exterior walls.
-
Flue pipes that are not thermally insulated and that are placed in a vertical position may not be over 1.25 m long.
Draft intensity is checked using a candle (Fig. 2).
