Kalfire W60/51Fl, Installation And Instructions Manual

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if you do not want to use the flue diameters listed in Table 3,
you can use the formula below to calculate a potentially smaller
diameter.
Permitted reduction:
•
flue Ø150
➡
reduction not allowed.
•
flue Ø180
➡
Maximum reduction of 30 mm. reduction not
allowed for the Kalfire w65/38C.
•
flue Ø200
➡
Maximum reduction of 20 mm. reduction not
allowed for the Kalfire w53/50r, w66/48s and w80/52T.
•
flue Ø250
➡
Maximum reduction of 50 mm.
WARNING after reducing the flue, it is no longer possible to
use the models suitable for this as an open fireplace (Kalfire
w60/51f, w71/62f, w85/40f) reduction is permitted
immediately behind the damper/connecting collar, but not
any deeper into the flue. in case of doubt, always use the
connection diameter indicated on the fireplace.
•
avoid horizontal runs; one extension may be placed with
adjustable elbows with a maximum change of direction of
45°. apply it directly to the appliance.
•
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 double-walled flue duct for
this purpose.
•
Kalfire advises you not to use larger flue diameters than
the connection present on the Kalfire. 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 that can cause quick, uncontrolled combustion and
irregular flames.
•
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
that 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.
fsch
fso
Hsch
e
flue section in cm
2
surface of firebox in cm
2
Height of flue in metres measured from the upper side of the Kalfire.
influence factor between 0.2 and 0.6 determined by the flue quality:
0.2 with a perfect flue, straight above the Kalfire; 0.6 with connection
less than 45°.
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