Checking The Flue - Kalfire W60/51Fl Installation And Instructions Manual

4.1.2 Checking the flue

To ensure proper functioning, we advise you to test/fire the
fireplace as early as possible (even before you have finished it
completely) (see Chapter 5):
•
You can then determine whether an external damper is
necessary.
•
The enamel on the fireplace can harden before it is finished.
This ensures less inconvenience for the user.
•
You will know at an early stage whether the fireplace and
flue are functioning properly.
Checks to be carried out while (test) burning
1. Check the flue for proper functioning; the minimum
required draught is 12 pa.
2. Test the secondary air regulation for proper operation; this
works after 50 minutes of heating: (see section 5.1.1)
- extreme right position = maximum supply of combustion
air
- extreme left position = air supply closed; fire slowly is
extinguished.
- if the flames do not react, or do not react enough, to
the change in the secondary air regulation, it may be
worthwhile considering installing an external damper on
the fireplace
3. Close all windows and doors (after about 50 minutes of
burning) and switch off any air consumers such as hoods,
fans, etc.
4. Then open the door of the fireplace to check that there is no
smoke returning (see also the conditions for installing the
fireplace (section 5.1). if smoke is returning to the room, you
can consider adjusting the baffle plates (see section 5.5).
5. use a little smoke to check the correct supply and
discharge of the convection air.
15
figure 11: opening the door to check the return of smoke to the room
figure 12: secondary air regulation