Piazzetta P958 Instructions For Installation, Use And Maintenance Manual page 20

Wall and floor ducting - Fig. 32 / 35
For efficient ducted heat distribution:
- lag the hose with a 2 cm thick insulation (e.g. mineral fibre, ceramic
fibre, rock fibre) to limit heat loss and to guarantee a sufficiently warm
air temperature;
- the insulation must have a specifi c weight equal to or more than
50 kg/m³ with working temperature limit of at least 250°C. Thermal
conductivity λ (100°C) ≤ 0,050 W/mK.
- Material with code "AGI Q132" or "DIN 18895" is allowed for thermal
insulation;
- the maximum total length of the hose connected to the fan must not
exceed 16 metres.
a
If the insulating material is not enclosed under the floor or
within the walls, it must be fixed to the surface with suitable
fastenings at intervals of 30 cm.
A few examples of how the hose can be installed in walls or floors are
given to the side.
Hot air outlet vent radiation area (mm) - Fig. 36
A safety area must be ensured around the hot air outlet vent within
which there must be no flammable objects (furniture, carpets, curtains,
etc.) or heat sensitive materials (wood, plastic, etc.).
The diagram to the side shows the measurements for this safety area,
which includes 600 mm from the upper edge of the vent.
a
If the floor is flammable, the hot air outlet vents must be
located at least 200 mm from the floor.
20
Fig. 32
Fig. 34
Fig. 36
H07026300 / DT2000786 – 00
Fig. 33
DT2030168-00
Fig. 35
DT2030170-00
HOT AIR OUTLET VENT
600 600
DT2030169-00
DT2030171-00
DT2030172-00