SPLIT-SYSTEM - Rhoss

II.2.2
SECTION II: INSTALLATION AND MAINTENANCE
MAXIMUM DIFFERENCE IN HEIGHT
BETWEEN THE UNITS
The maximum permitted difference in height between the internal and
external unit is +/- 5 m.
When the difference in height between the internal and external unit
exceeds 3 m and the external unit is positioned higher than the internal
one, we recommend installing a siphon on the gas line in order to
facilitate the return of the lubricant oil to the compressor (Fig. 2).
The unit must not operate continuously in cooling mode in rooms with a
high relative humidity (above 80%). In these conditions condensation
could form on the mouth of the air outlet which could damage objects
below it, or the floor, or the wall to which the unit is attached.
II.1.3.2
External Unit
The external unit should be installed above ground, so that it is not
easily accessible, on suitable brackets for supporting the weight of the
unit and the connection pipes.
Respect the technical spaces illustrated below.
II.2
INSTALLATION
DANGER!
Installation must only be carried out by skilled
technicians, qualified to work on air conditioning
and refrigerant systems.
Incorrect installation could cause the unit to run
badly, with consequent deterioration in
performance.
The unit must be installed according to national or
local rules in force at the time of installation.
Instructions for correct air conditioning unit installation are provided
here.
The completion of the operations on the basis of specific requirements
is left to the experience of the installer.
II.2.1
NOISE AND VIBRATION REDUCTION
Proper installation calls for measures aimed at reducing noise
disturbances caused by the normal operation of the external unit.
Before installing the unit, check with local authorities about the
existence of specific limitations concerning permitted environmental
noise.
The external unit must never be located in areas where there are
spaces which are normally inhabited (offices, living rooms, bedrooms
etc).
Particular attention should be paid to installations near rooms used by
sick or disabled people.
The use of antivibration mountings for the unit guarantees adequate
absorption of vibrations transmitted to the building by the unit.
Special measures must be taken if the unit is installed in an area with a
high risk of earthquakes or in other particular situations. In these cases
it is necessary to obtain the advice of specialized technicians.
II.2.3
INTERNAL UNIT INSTALLATION
The internal unit must be wall-mounted.
Respect the minimum clearance distances indicated.
Before installing the unit, make some preliminary checks in order to
ascertain that:
• the wall where the unit is to be installed is solid and sufficiently level
in order to provide a good support;
• the minimum technical clearance distances can be respected for
installation;
• the unit will not be covered by curtains or other objects that disturb
the ingoing and outgoing passage of air;
• the unit, and consequently the receiver (infrared signal), will not be
exposed to direct sunlight or electronic lights, which could prevent it
from operating correctly;
• the unit is not installed at a height above ground of more than 2.7
metres in order to prevent air stratification effects during operation.
Proceed as follows to install the unit:
• fix the paper template provided to the wall selected;
• using a drill with a small tip, mark the following centres: hole for the
passage of the pipes and electric wires, hole for the expansion plugs for
the fixture of the support plate (minimum No. 4, use others if
necessary);
• make the hole for the pipe and electric wire passage (Fig. 3);
Internal wall
side
Internal wall
side
External
wall side
External
wall side
• make the holes for the expansion plugs;
• remove the support plate fixed to the unit;
• secure the support plate to the wall using the plugs and make sure
that it is perfectly horizontal;
• unscrew the screws that hold the unit casing in place;
• bend the copper pipes on the back of the unit on the basis of
requirements (Fig. 4);
IMPORTANT!
The copper pipes must be bent very carefully in
order to avoid cracks occurring.
Fig. 2
Fig. 3
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