Kalfire W Series, Installation And User Manual, Page: 20 / 68

Permitted reduction:
- Flue Ø150
➔
Reduction not allowed.
- Flue Ø180
➔
Front models: Maximum reduction
30 mm.
Edge-, 3-sided- and tunnel models:
Reduction not allowed.
- Flue Ø200
➔
Front models: Maximum reduction
20 mm.
Edge-, 3-sided- and tunnel models:
Reduction not allowed.
- Flue Ø250
➔
Maximum reduction 50 mm.
After reducing the flue, it is no longer possible to use the
Kalfire W as an open fire place.
Reduction is permitted immediately behind the damper/
connection collar, but not any deeper into the flue. At
doubt, always use the connection diameter indicated on the
appliance.
•
Avoid horizontal runs; one extension may be placed
with adjustable elbows with maximum one change of
direction of 45°.
•
Kalfire advises you to insulate the flue; this will reduce
the risk of the smoke condensing and will improve the
draught. Use the Kalfire stainless steel insulated flue
duct for this purpose.
•
Kalfire advises you not to use larger flue diameters than
the connection present on the appliance. Using a larger
flue diameter can result in the following problems:
- Too fast and uncontrolled combustion.
- Irregular flames.
- Reduced heat output.
•
Use a draught hood if there is a flue with a (too) strong
draught. If the flue has too much upward draught, this
may result in a too quick, uncontrolled combustion,
irregular flames and rapid soiling of the glass door.
•
Use of different flue diameters to those indicated, is
entirely for the risk of the installer; when the door is
opened, smoke may escape back into the room or it
may be more difficult to ignite the fireplace.
•
Take factors in the surrounding environment into
account which could cause a strong draught in the
flue. For example, frequent high winds, which require a
damper to be mounted.
•
Pay attention that it is also possible to sweep the
chimney in the connection piece.
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