Page 16
User, Installations and Maintenance Manual
Install each air channel, making sure:
• It does not weigh down on the equipment.
• It allows maintenance operations.
• It is adequately protected to prevent the accidental intrusion
of materials inside the equipment.
• The connection to the outside must be done with suitable,
non-flammable piping.
•
The total equivalent length of the extraction pipes plus the
delivery, including grilles, must not exceed 12 m.
The table gives the characteristic data of commercial ducting
components with reference to nominal air flows and diameters
160 mm.
Data
Smooth
straight pipe
Smooth 90 °
curve
Grille
UM
Type
Effective
length
1
\
\
m
Equivalent
length
1
2
2
m
During operation, the heat pump tends to lower the room tem-
perature if the air ducting is not to the outside.
A suitable protection grille must be installed at the air extrac
-
tion pipe to the outside to prevent any foreign bodies from
entering inside the equipment.
To ensure maximum product
performance, the grille must be selected from those with low
pressure loss.
To avoid the formation of condensation water: insulate the air
extraction pipes and the ducted air cover connections with a
steam-tight thermal covering of adequate thickness.
Install silencers if deemed necessary to prevent noise due to
the flow. Equip the pipes, wall outlets and connections to the
heat pump with vibration-damping systems.
7.3.1 Special installation
One of the peculiarities of the heat pump heating systems is
that these units considerably lower the air temperature, gener-
ally expelled to the outside of the house. As well as being colder
than the ambient air, the expelled air is also completely dehu
-
midified, therefore the air flow can be returned inside for the
summer cooling of specific rooms or areas.
Installation provides for splitting of the extraction pipe, which is
fitted with two dampers ("A" and "B") for directing the air flow to
the outside (fig. 16) or the inside of the house (fig. 15).
Mandatory air
inlet D.160 mm
Internal
compartment
Damper "A"
closed
Damper "B"
open
Internal compartmen
t
Exterior
fig. 15- Example of installation in the summer period
Mandatory air
inlet D.160 mm
Internal
compartment
Damper "A"
open
Damper "B"
closed
Internal compartmen
t
Exterior
fig. 16- Example of installation in the winter period
