Recommendations For Open Use; Operating The Damper (Optional) - Kalfire W60/51Fl Installation And Instructions Manual

6.6.2 Recommendations for open use:

Kalfire advises you to keep the door of the fireplace closed until
there is a glowing bed and the fireplace is well heated. This will
take approximately 45 minutes. The fireplace is at operating
temperature and the flue gas is exhausted correctly.
if the fireplace is immediately used with the door open, there is
only a minimum of pull in the flue. There is a substantial risk that
the flue gasses will not be exhausted correctly, but will flow back
into the room.
WARNING if the flue duct is reduced, the fireplace is no
longer suitable for open use. only open the door if strictly
necessary (e.g. to top up the logs)
WARNING The 3-sided and corner models and the room
divider are less suitable for use as an open fire than the
front-opening models. if the Kalfire w53/50r, w65/38C,
w66/48s, w90/47C of w90/47s s models are used with the
door open, smoke may be blown into the room. even if both
baffle plates have been removed. The degree to which you
can successfully use the fireplaces open greatly depends on
the flue duct and the draught it exerts.

6.7 Operating the damper (optional)

depending on the situation, an external damper can be connected
by a Kalfire-approved installer to the fireplace (see section 3.6).
CAREFUL! it is not necessary to install a damper in all
situations! after the Kalfire-approved installer has installed
the damper, you can operate it using the knob on the side of
the surround.
when using an original Kalfire damper, the letters 'auf or +' on the
knob show the open position and 'Zu or -' is the closed position.
set the desired position by turning the damper, depending on the
draught in the flue and the way the appliance is being used:
When lighting the fire
damper fully open.
When burning with The damper can be closed to 20-50%,
closed door which will calm the flames.
if you want to top up the wood, open the
damper completely before opening the
door. once the wood is burning well, you
can partly close the damper again.
When burning with damper permanently and fully open.
closed door
41