Cast iron fireplaces
Instructions for installation, use and maintenance – EN – Rev.07
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some hours, must exceed many times and for a given period of time the temperature of 350 °C before
becoming completely embedded in the metallic surfaces.
Therefore, it is extremely relevant to take these easy steps during the lighting:
1) Make sure that a strong air change is assured in the room where the appliance is installed.
2) During the first starts, do not load excessively the combustion chamber (about half the quantity
indicated in the instructions manual) and keep the product continuously ON for at least 6-10 hours with
the registers less open than the value indicated in the instructions manual.
3) Repeat this operation for at least 4-5 or more times, according to your possibilities.
4) Then load more and more fuel (following in any case the provisions contained in the installation booklet
concerning maximum load) and, if possible, keep the lighting periods long avoiding, at least in this initial
phase, short ON/OFF cycles.
5) During the first starts, no object should be leaned on the appliance and in detail on enameled
surfaces. Enameled surfaces must not be touched during heating.
6) Once the «break-in» has been completed, it is possible to use the product as the motor of a car,
avoiding abrupt heating with excessive loads.
After testing the proper working of the appliance, some days from the installation, it is possible to
proceed with the construction of its aesthetic covering
11. NORMAL OPERATION
After having positioned the registers correctly, insert the indicated hourly wood load (see CHAP. 17)
avoiding overloads that cause anomalous stresses and deformations. You should always use the
FOCOLARE with the door closed in order to avoid damages due to overheating (forge effect).
The inobservance of this rule makes the warranty expire.
With the registers located on the front of the device, it is possible to adjust the heat emission of the same.
They have to be opened according to the calorific need.
The best combustion (with minimum emissions) is reached when, by loading the wood, most part of the air
for combustion flows through the secondary air register.
The adjustment of the registers necessary to reach the rated calorific yield with a depression at the stack of
14 Pa (=1.4 mm of column of water) is the following one:
Fuel
Primary air
Secondary air
Flat fireplace
Wood
Closed
Open
Round fireplace
Wood
Closed
Open
Prismatic fireplace
Wood
Closed
Open
Table 2
Besides the adjustment of the air for the combustion, the intensity of the combustion and consequently the
thermal performance of the device is influenced by the stack. A good draught of the stack requires a stricter
adjustment of air for combustion, while a poor draught requires a more precise adjustment of air for
combustion.
To verify the good combustion, check whether the smoke coming out from the stack is transparent.
If it is white, it means that the device is not properly adjusted or the wood is too wet; if instead the smoke is
gray or black, it signals that the combustion is not complete (it is necessary a greater quantity of secondary
air).
