Installation Manual
18
RKHH2E-(P)AAV33
ROTEX Domestic Hot Water Heat Pump
2018.8
Carry out the installation of each air duct making sure
that:
•
Its weight does not adversely affect the equipment
itself;
•
Maintenance operations can be carried out;
•
It is adequately protected so as to avoid the
accidental intrusion of material inside the
equipment itself;
•
It doesn’t exceed the maximum suggested length
of 6 meters (with 2 elbow junctions of 90°).
•
The maximum total allowable pressure drop for all
components within the pipe system does not
exceed 120 Pa, including through holes when
mounted on an external wall.
•
When the pipes are installed in a vertical line the
inlet and the outlet pipe should be at least be at
200mm distance of each other.
During operation, the heat pump tends to
lower the ambient temperature if the
external air duct is not enabled.
An appropriate protection grid must be
installed in line with the discharge pipe
conveying air to the outside, with the goal
of preventing foreign bodies from
entering the equipment. In order to
guarantee maximum device
performance, the grid must ensure low
pressure loss.
In order to avoid the formation of condensate:
insulate the air discharge pipes and the
air duct cover connections with steam-
tight thermal cladding of an adequate
thickness.
Sound mufflers can be mounted when
deemed necessary.
Fit the pipes, the holes in the wall and the
connections to the heat pump with
vibration damping systems.
WARNING!
The simultaneous operation of an open-flue
firebox (e.g. an open-flue fireplace)
together with the heat pump causes a
dangerous environmental pressure drop.
This may cause the backflow of exhaust
gas to enter the environment.
Do not operate the heat pump together with
an open-flue firebox.
Use only sealed-chamber fireboxes
(approved) with a separate duct for
combustion air.
Keep the doors to the boiler room closed and
hermetically sealed if there is no
combustio air supply between the
inhabited areas and the boiler room.”
6.2.1 Particular installation conditions
One of the peculiarities of the system is that it can
cause a considerable lowering of the air
temperature of the home.
The exhaust air is colder than the ambient air, as well
as partially dehumidified. As the air is colder and
dehumidified, it may be used to cool specific
environments inside the home by letting it flow
back inside.
Installation consists of the splitting of the discharge pipe
to which two shutters are applied (“A” and ”B”).
Splitting the discharge pipe directs the air flow
either towards the inside (Fig. 5a) or the outside of
the home (Fig. 5b).
Fig. 5a
– Example of installation in summer
Fig. 5b
– Example of installation in winter
Ou
ts
id
e
a
re
a
In
d
o
o
r
a
re
a
Ou
tsi
d
e
a
re
a
In
d
o
o
r
a
re
a
Shutter “A”
closed
Shutter “B”
open
Shutter “A”
open
Shutter “B”
closed
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