FORMA WOOD CLOSED FIREPLACE
Chapter 5
USE AND MAINTENANCE MANUAL
page
27
Operation
Technical dept. - All rights reserved by MCZ Group S.p.A. - Reproduction prohibited
Max
Min
5.6.
COMBUSTION CONTROL
PRIMARY AIR
The primary air directly enters the system via the openings between
the casing and structure of the closed fireplace. This air allows
combustion and helps to clean the glass.
Moving the lever shown in the figure to the left using the cold hand
opens the system fully and produces faster combustion. Moving this
lever to the right closes the system and produces slower combustion.
Turning the lever to MAX brings a large quantity of primary air beneath
the fire plane of the combustion chamber to allow rapid and effective
ignition of the fire.
SECONDARY AIR
This is adjusted using the same lever as the primary air. The secondary
air is discharged proportional to the primary air in a pre-calculated
balance that the user is never able to change through poor
adjustments. This prevents excess combustion. The secondary air
completes combustion and increases efficiency (lever in central position
between MAX and MIN).
When the lever is positioned fully to the right (Min) the amount of air in
the combustion chamber decreases, that is; there is a minimal amount
of primary air in the combustion chamber.
This position is used to prolong combustion (for instance, at night, or
when you are not at home) so that the closed fireplace is set to
minimum for auto-combustion. This saves fuel and keeps the flame
burning.
The use of humid or treated wood releases a larger than
normal quantity of smoke, which could soil the glass more
quickly. Poor performance of the flue pipe can also
compromise the cleanliness of the glass, given that the
smoke remains in the combustion chamber longer than
usual.
5.7.
QUICK RESPONSE
If, for any reason, the fire in the closed fireplace must be put out
suddenly and quickly or a fire that has started in the flue pipe must be
put out, act as follows:
If you have time, remove the embers and ash using a metal
container.
Request urgent assistance from the competent authorities.
Figure 13 –
Adjusting the primary/ secondary
air.
