Chimney stove
OMBRETTA - CARLOTTA
Instructions for installation and use – EN – Rev.05
25
The openings for air (primary and secondary) must be opened together just a little (you must open the
eventual butterfly valve placed on the pipe of smokes exhaust). When the wood starts burning, adjust the
air for combustion according to the instructions on paragraph 10.
Never overload the stove (compare the technical table - max. quantity of loadable fuel).
Too much fuel and too much air for the combustion may cause overheating and then damage the
stove, as a consequence some scratches in the lower front part of the stove could happen.
The warranty does not cover the damages due to overheating of the equipment.
10. NORMAL OPERATION
For safety reasons the door of the appliances with constructive system 1, must be opened only for the
loading of the fuel or for removing the ashes, while during the operation and the rest, the door of the hearth
must remain closed.
The appliances with constructive system 2 must be connected to their own flue. The operating with open
door is allowed under supervision.
IMPORTANT: For safety reasons the door of the hearth can be opened only for the loading of the
fuel. The hearth door must always remain closed during operation or rest.
The nominal power of the appliance (6 / 8 kW) will be reached with a minimum depression in the chimney
of 12 Pa ( = 1,2 mm of water column).
With the registers located on the front of the appliance 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.
Never overload the appliance (see the hourly wood load in the table here below). Too much fuel and
too much air for the combustion may cause overheating and then damage the stove.
The warranty does not cover the damages due to overheating of the equipment.
You should always use the stove with the door closed in order to avoid damages due to overheating
(forge effect).
OMBRETTA
OMBRETTA Forno
Primary air
Secondary air
Primary air
Secondary air
10mm
OPEN
OPENED
CLOSED
22mm
OPEN
Legna
2
kg/h
2
kg/h
CARLOTTA
CARLOTTA Forno
Aria primaria
Aria secondaria
Aria primaria
Aria secondaria
10mm
OPEN
22mm
OPEN
CLOSED
20mm
OPEN
Legna
2.5
kg/h
2.7
kg/h
Besides by the adjustment of air for the combustion, the intensity of combustion and then the calorific value
of your stove is affected by the chimney. A good flue of the chimney requires a more reduced adjustment of
air for the combustion, while a poor flue needs more an exact adjustment of air for combustion.
To verify the good combustion of the stove, check if the smoke coming out from the chimney is transparent.
If it is white, it means that the stove is not correctly adjusted or the wood is too wet; if on the contrary the
smoke is grey or black, it means that the combustion is not complete (it is necessary a greater quantity of
secondary air).
