Lamborghini Caloreclima DORA 200 LT-S Manual De Uso E Instalación página 78

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.
Smooth
Data
straight pipe
Type
Effective
1
length
Equivalent
1
length
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.
78
EN
Smooth 90 °
Grille
curve
\ \
2 2
cod. 3541T640 - Rev. 01 - 12/2019
DORA
200 LT-S - 260 LT-S - 200 LT - 260 LT
ATTENTION!: The simultaneous operation of an
open-chamber hearth (e.g. open fireplace) and
the heat pump causes a dangerous negative
pressure in the room. The negative pressure
can cause the return of exhaust gases into the
room.
Do not operate the heat pump together with an
open-chamber hearth.
Only use sealed-chamber hearths (approved)
with separate combustion air supply.
Keep tight and sealed the doors of boiler rooms
that do not have the inflow of combustion air in
common with living areas.
5.3.1 Special installation
One of the peculiarities of the heat pump heating systems is
UM
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
m
fitted with two dampers ("A" and "B") for directing the air flow to
m the outside (fig. 15) or the inside of the house (fig. 14).
Damper "A"
closed
fig. 14- Example of installation in the summer period
Damper "B"
open
Internal
compartment