La Nordica Helga Pietra [18/68] Chimney pot

HELGA

18 7196806

6.2. CONNECTION TO THE CHIMNEY

Products with automatic door closing (type 1) must operate, for safety reasons, with the furnace door closed (except during the fuel loading

or ash removal phases).

Products with non-automatic door closing (type 2) must be connected to their own ue.

Operation with doors open is only allowed when supervised.

The connection pipe to the ue must be as short as possible, straight horizontal and positioned slightly in ascent, and watertight.

Connection must be carried out with stable and robust pipes,comply with all current Standards and Regulations and to those envisioned

out when the appliance is hot (nominal caloric power). When the pressure exceeds 17 Pascal, it is necessary to reduce it through the

installation of an additional draught regulator (false air valve) on the exhaust pipe or in the chimney, according to the regulations in force.

For correct appliance operation, it is essential that sufcient air for combustion is introduced into the place of installation (see paragraph 7).

6.3. CONNECTING A FIREPLACE OR OPEN HEARTH TO THE FLUE

The ue gas channel is the stretch of piping which connects the product to the ue. In the connection, these simple but extremely important

principles must be respected:

• under no circumstances use a ue gas channel with a diameter less than that of the exhaust clamp with which the product is equipped;

• each metre of the horizontal stretch of the ue gas channel causes a slight loss of head which must be compensated if necessary by

elevating the ue;

• the horizontal stretch must never exceed 2 metres (UNI 10683);

200mm, pos. B, taking care to close the remaining spaces between the pipe and the ue immediately under the chimney pot pos. C.

7. AIR FLOW IN THE PLACE OF INSTALLATION DURING COMBUSTION

As the product draw their combustion air from the place of installation, it is MANDATORY that in the place itself, a sufcient quantity of air

is introduced. If windows and doors are airtight (e.g. built according to energy saving criteria), it is possible that the fresh air intake is no

longer guaranteed and this jeopardises the draught of the appliance and your health and safety. It is therefore necessary to guarantee a

supply of fresh air through an external air inlet placed near the appliance or by placing piping for combustion air which leads outside or to

a nearby airy place, with the exception of the boiler room or garage (FORBIDDEN).

IMPORTANT: 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 (see Chap. DIMENSIONS and Picture 9 a pagina 62).

The connection pipe must be smooth with a minimum diameter of 100 mm. It must have a maximum length of 3 m and have no more than

the environment. This causes the leakage of burnt gas (dense smoke, smell); it is therefore necessary to ensure a greater ow of fresh air.

The depression of an extractor hood can, in the worst case scenario, transform the ue of the product into an external air inlet,

re sucking the ue gases into the environment with very serious consequences for persons.

6.1. CHIMNEY POT

The ue draught depends on the suitability of the chimney pot.

It is therefore essential that, if built in a handcrafted way, the exit section is more than twice the internal section of the ue

(Picture 2 at page 58) .

As it must always go past the ridge of the roof, the chimney pot must ensure exhaust even in the presence of wind (Picture 3 at page 59).

The chimney pot must meet the following requirements:

• Have an internal section equivalent to that of the chimney.