Description; Flue - LA NORDICA NORMA S EVO IDRO DSA Manuel Utilisateur

DESCRIPTION

Definition: thermo-fireplace according to EN 13240.
La Nordica thermoheating products are ideal for holiday flats and weekend houses or as auxiliary heating all year round.
Wooden logs are used as fuel. The appliance works as an intermittent operating appliance.
The appliance is composed of painted and galvanised sheet steel and cast iron. The fireplace is found inside the boiler, is built in 4
mm thick steel and is reinforced using welded nails. The water in the heating system circulates in the boiler, which absorbs the heat
produced in the fireplace. The ceramic glass window (resistant up to 700°C) of the door provides a lovely view of the burning flames
and prevents sparks and smoke from getting out.
ACCESSORIES
Room heating takes place:
a) by radiation: the heat is radiated into the environment through the panoramic window and the hot external surfaces of the
thermo-fireplace;
b) by conduction: radiators or heat convectors of the centralised system fed by hot water produced by the boiler. (See chapter
CALCULATION OF THE THERMAL POWER).
The device is equipped with registers for primary and secondary air and a thermostat with which the combustion air is regulated.
1A - PRIMARY Air Register / AUTOMATIC Thermostat
The thermostat has the task of automatically increasing or decreasing combustion.
Dependent on the position chosen, the thermostat will act on the valve which regulates the intake of air into the furnace, placed on
the back of the cooker. Turn it in a clockwise direction from 0 to 5 to make up the fire and in an anti-clockwise direction to reduce
combustion. As this is an extremely precise device, it is advisable to turn it carefully and never force the knob.
2A- SECONDARY air register
Below the hearth door, on the right front side there is the secondary air register.
The secondary air, passing through the two lateral jambs of the front side, heats itself starting the double combustion and keeping at
the same time the glass clean ( with open register). When the bar is pushed to the back the passage of the secondary is completely
open. For a better comfort and corresponding oxygenation of environment, the air can be directly withdrawn at the outside. In order
to do that, the stove can be connected to the external air socket by an junction Ø 100 mm (see Chap. AIR FLOW IN THE PLACE
OF INSTALLATION).
The register regulation necessary in order to obtain nominal calorific output is the following (see Cap. NORMAL OPERATION):
Hourly consumption in kg/h
4,8
To ignite the flame follow the instructions below (see Cap. IGNITION) :
• Open the butterfly valve placed on the flue gas exhaust pipe must also be opened.
• Position the thermostat knob on position 5 (maximum opening).
• After having started the fire with small pieces of wood and waited until it is well lit, adjust the thermostat to the positions
corresponding to the desired heat (0÷5).
• Close the butterfly valve placed on the flue gas exhaust pipe must also be opened.

FLUE

Essential requirements for correct appliance operation:
• the internal section must preferably be circular;
• the appliance must be thermally insulated and impermeable and built with suitable materials which are resistant to
heat, combustion products and any condensation;
• there must be no narrowing and vertical passages with deviations must not be greater than 45°;
• if already used, it must be clean;
• the technical data from the instruction manual must be respected;
If the flues are of a square or rectangular section, the internal edges must be rounded with a radius of not less than 20 mm.
For the rectangular section, the maximum ratio between the sides must be ≤ 1.5.
A section which is too small causes a reduction in draught. A minimum height of 4 m is advisable.
The following materials are FORBIDDEN and compromise the good operation of the appliance: asbestos cement, galvanised steel,
rough and porous internal surfaces.
The minimum section must be 4 dm
or 6.25 dm (for example 25x25 cm) for appliances with a diameter of more than 200 mm.
2
The draught created by your flue must be sufficient but not excessive.
POKER
SERIES
(Picture
(Picture 7).
PRIMARY air
Position 0
Picture 2 shows some example solutions.
(for example 20x20 cm) for appliances whose pipe dimensions are less than 200 mm,
2
GLOVE
SERIES
7)
SECONDARY air
OPENED
ENgLIsH
RING Ø 100 mm air fitting
SERIES
TERTIARY air
Pre-adjusted
29