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7.2 Generalities and choice of the
installation place
WARNING!
•
Install the unit in an internal environment.
•
The unit must not to be install near heat or steam sources.
•
Install the internal unit respecting the minimal distances
from walls and obstacles for facilitate the assembly and
maintenance operations.
•
Secure a proper air circulation.
•
Install the unit in a vertical position, as shown in figure at
paragraph 7.1.
7.3 Assembly internal unit and correct
positioning of B2 probe
The unit has to be fixed to the wall using dowels and L supports.
Lift the unit and hang it on the wall. Caution, it is advisable to
be at least in two persons or more, as the excessive weight can
cause serious injuries.
Probe cable B2
The B2 probe cable must be positioned
sideways respecting a distance of 2 m from
the internal unit, it must alight at man height
paying attention it cannot be in direct contact
with the wall because it is primary that the
cable of this probe be at least 3cm away from
the wall.
2 m
Probe cable B2
8 Refrigerant circuit onnection
The refrigerant pipes connections have to be made up by
qualified and licensed personnel. The connections requires the
use of a weld tool.
8.1 Installation requirements
•
The connecting tubes between internal and external units
have to respect the below indicated dimensions.
•
Non respecting of indicated measurements can lead to
significant decrease of the machine performance.
•
If the internal unit is installed at a higher level than the
external unit, it is necessary to provide some specific
siphons each 5 meters high on the refrigerant conduit
return to facilitate the oil return eventually remained in the
circuit
Nominal
lenght
Maximum
lenght
of the piping
(
m of equivalent
length
)
Maximum
height
difference
(
m of equivalent
length
)
Additional
refrigerant
charge
recommended *
(g/
m of equivalent
length
)
All models
1
30
30
45
* sub-cooling must be in a range between 3°C and 4°C with heat pump in steady state.
NOTE: the parameter equivalent lenght has to consider the
curves too. Each 90° curve in the circuit has to be counted as
a 1 m straight portion. Each 180° curve in the circuit has to be
counted as a 2 m straight portion. Each oil trap in the circuit has
to be counted as a 4 m straight portion.
8.2 Preparation for installation and
refrigerant pipelines installation
The coolant pipes connections must be sealed to prevent
leakage of the coolant and the consequent malfunctioning of the
heating pump. The connection pipes must be insulated and have
diameters specified in the following table.
Gas (mm)
Liquid (mm)
KITA AIR
Ø 28
Ø 16
For the preparation of the pipes for installation, proceed as
follows:
•
Measure the distance between internal and external units,
and perform all necessary installation curves..
•
The laying of the pipes must include the minimum number
of bends, because each curve increases the pressure drop
of the circuit and reduce the machine performance.
• Cut the pipes to a length slightly greater than that
measured.
•
Completely remove smudging from the cut section, holding
the pipe downward and blowing air into the pipe.
•
Respect the safety measures that are indicated into the
table, or add the request quantity of refrigerant.
•
Weld the provided manufacturer’s anchors at the end of
the connection pipe. Weld the inner side female anchors
and the outer side male anchors. Where is possible,
perform welding in nitrogen atmosphere. Otherwise at the
end of welding operation blow the nitrogen braise points..
•
Insulate carefully the refrigerant anchors and connections.
