MCZ Vivo 70 Wood - Manual (Page 38)

Chapter 6
INSTALLATION AND USE MANUAL
page
38
Operation Technical service – MCZ Group S.p.A. all rights reserved - Reproduction prohibited
6.6. CONTROL OF COMBUSTION
PRIMARY AIR
The fireplace stove is equipped with a rear hole of Ø100 mm for the
entry of primary air which ensures combustion.
Turn the register all the way to the left to allow the maximum flow of
PRIMARY
and SECONDARY air to light the fireplace stove.
Once the flame in the fireplace stove is burning well, turn the register
until the knob reaches the centre position. In this condition, the primary
air inlet is completely closed and the secondary air flow is at a
maximum. See sheet 17
SECONDARY AIR
The adjustment is made with the previously mentioned register. Turn
this register from the middle position to the right or left to adjust from
MAX to MIN to adjust the flow of only secondary air.
In normal conditions of use, dirt deposits on the glass at
lighting, but disappears as soon as the combustion chamber
is hot enough.
The use of damp or treated wood emits a higher quantity of
smoke than normal that can dirty glass faster. Also the low
performance of the flue pipe can jeopardise glass cleanliness
since smoke remains in the combustion chamber longer than
normal.
6.7. SMOKE VALVE ROD
The system works only with efficient draught of the flue pipe (see
technical characteristics) and lets you better control combustion, thus
prolonging it.
By inserting the smoke valve rod in the hole, you mechanically close
the valve on the smoke outlet connection. Figure 18
For example, in the evening, if you load a substantial amount of wood
(about 5 kg) and you adjust the air to the minimum (figure 19) , you
will keep the room comfortable all night. In the morning, the fire box
will still contain embers ready for a fresh load of wood.
Obviously you can also use the rod in the morning or when you like.
You must not use the inserted rod if there is poor
draught. Use in these conditions (low pressure, or
flue pipe partially obstructed) may cause choked
combustion and dirtying of the glass.
Figure 17 – Detail of air register
Figure 18 – Smoke valve inserted