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5.4
Gap Between the Units
In the event that there is a gap of more than
5m in the level of the units and the indoor
unit is at the lower level, a siphon for a 3m
gap must be installed in the suction pipe (see
Fig. 17).
In installations where the indoor unit and the
outdoor unit are at the same level or where
the indoor unit is at higher level, it is
necessary to install a siphon followed by an
inverted “U” after the discharge from the
indoor unit, in the suction pipe. The upper
level of this siphon must be at the same level
as the highest point of the indoor unit.
When bending the pipes, the bending radius
cannot be less than 100mm.
IMPORTANT !!!
IMPORTANT !!!
Fig. 17 - Gap between the units
Respect the equivalent maximum distance
indicated for the pipes, giving consideration
to the fact that it is the result of adding the
equivalent distances of the pipe curves in a
straight line.
5.5
Interconnection Junctions
The equivalent length limits and gap
indicated for the units must be respected.
The indoor and outdoor units have flange-nut
type connections on the fluid and suction
discharge connections coupled to the
respective service valves. See Fig. 18.
When we remove the nut from the valve body
(Fig. 19), we find a hexagonal central cavity.
If necessary, use a suitable Allen key to
change the position of the service valve
(clockwise to close, anti-clockwise to open).
The service valves must be opened only after
performing the connection pipes and
additional load; otherwise there is a risk of
losing the entire refrigerant load in the
outdoor unit.
CAUTION !!!
Fig 18 - Service valve of the suction and fluid pipes
Fig. 19 - Service valve without the protection nut