La Nordica Monoblocco Ghisa 750 Piano [18/52] Connection and maintenance of ventilation optional

The failed tightness of the connection can cause the malfunction of the device.

The internal diameter of the connection pipe must be equal to the external diameter of the smokes stub pipe of the device. This is assured

by the pipes complying with DIN 1298.

For a better working of the appliance, it is suggested to have a ue draught of 13 Pascal (=1.3 mm of column of water).

The measurement has always to be carried out with hot device (rated thermal performance).

When the depression exceeds 17 Pa (=1.7 mm of column of water), it is necessary to reduce the same by installing an additional draught

regulator (buttery valve) on the exhaust pipe or in the chimney, according to the regulations in force.

IMPORTANT: When using metallic pipes, they must be insulated with proper materials (coatings in insulating bers resistant up

to 600°C) in order to avoid deterioration of walls or of the counter-hood.

Base: Minimum opening 600 cm

2

In this way, the following targets are achieved:

• a greater safety

• an increase of the heat created by air circulation around the device.

ATTENTION: We recommend making the counterplate in re-retardant plasterboard with self-supporting metal frame, so that its weight

does not bear on the aesthetic covering (marble). We recommend providing an inspection door on the counter plate or elsewhere as

suitable to provide easy accessibility and visibility of the safety devices (pressure gauges, valves,..).

The heat vent grating (Picture 7 at page 42 pos. 6) has to be installed on the upper part of the hood at about 20 cm from the roof. This must

always be installed since its function is that of letting the heat collected within the hood (overpressure) ow out into the room.

• Vents may communicate with adjacent rooms but NOT with garages, kitchens, bathrooms or boiler rooms (FORBIDDEN).

• Any extractor hoods in the room where the device is installed must NOT operate at the same time as this could cause smoke to

enter the room, even with the replace’s door closed.

Minimum dimensions (Picture 15 at page 45):

A – natural

convection: 300 cm

B – forced convection: 150 cm

with the outside it must be endowed with a special windbreak.)

7. CONNECTION AND MAINTENANCE OF VENTILATION (OPTIONAL)

The control unit and the plant must be installed and connected by authorized personnel according to the standards in force. (see

chapter GENERAL REMARKS).

ATTENTION: the control unit and the feeding cable must not be in contact with hot parts.

On our products, it is possible to install Optional ventilation kits suitable to improve the distribution of heat by ventilation only either of the

installation room or of the adjacent local (see chapter EXTERNAL AIR INTAKE).

For the installation of the Forced Ventilation Kit, follow the given instructions. (see chapter OPTIONAL VENTILATION KIT).

The Kit is made up of a centrifugal fan, a lighting and adjustment control unit, and a (TM) thermostat that lets the fan start when the device

is properly heated and lets it stop when the fan is partially cold.

Correct operation of the command is assured only for the proper motor for which it has been manufactured. Improper use relieves the

manufacturer from each responsibility.