21
Connection to the drains
The condensed water drains from the tray through a siphoned
flexible tube fitted in the unit.
If the conditioner is fitted with a humidifier, the condensate
drain tray and the humidifier drain connection must be
connected to the drains of the building.
Direct connection to the drains of the building
Connect the drainage tube of the unit to the drains of the
building using a rubber or plastic tube with an internal diameter
of 25 mm.
The external drainage tube must be siphoned in order to avoid
unpleasant odours. Maintain a minimum slope of 1%
downstream of the siphon.
Once the connections have been made, pour water into the
condensate drain until the siphon inside the unit is full.
The external drainage tube must be siphoned to avoid
unpleasant odours and an overflow of the water from the tray
of the humidifier. Maintain a minimum slope of 1% downstream
of the siphon.
Once the connections have been made, pour water into the
condensate collection tray of the Leonardo unit and in the
condensate collection tray of the humidifier until both siphons
are full.
Connection to the gas drain
The cooling circuit is equipped with a safety valve for the
discharge of the refrigerant gas.
The intervention of the valve pressurises the discharge of the
refrigerant fluid, possibly also to high temperatures; in the
case of installation in a closed environment, where there is
the risk of causing damage to people nearby, a conveying
tube must be used from the discharge to outside the room;
this must be done in such a way that the operation of the
valve is not affected: it must not create a full flow, a counter-
pressure higher than 10% of the pressure of the calibration.
Where it is not possible to install a conveying tube it is good
practice to create adequate aeration of the environment, and
indicate, through specific signs, the presence of the drain.
Also check that the discharge of the valve does not take
place behind the electrical boards or electrical equipment.
U7
U4
SAFETY VALVE
OUTLET
Connection to the humidifier (optional) and to the drains
of the building
WARNING! The water discharged from the
humidifier is at a very high temperature. The
drainage tube has to withstand high
temperatures (at least 100°C) and must be kept
away from electrical cables.
Connect the drainage tube of the unit to the collection tray
(U4) of the humidifier.
Connect the drainage tube of the humidifier (U7) to the drains
of the building using a rubber or plastic tube, which is resistant
to high temperatures (minimum 100 °C) with an internal
diameter of 22 mm.
To connect the auxiliary connections to the terminal board,
carry out the following procedures:
•
pass the cables through the power supply cable inlet
D7B;
D5
D7
A
D7
B
•
refer to the wiring diagram and carry out the connection
to the terminal board.
DIGITAL CONFIGURABLE INPUTS
Terminal board 51-20
- User
- ON - OFF Remote
- Flooding sensor (SAS)
Terminal board 52-20
- User
- ON-OFF Remote
- Fire-smoke (SFF)
Terminal board 50-20
- User
- ON-OFF Remote
- Tools (ATA-BTA-AUA-BUA)
20 20 20 20
50 51 52
Drain
%
Siphon
Minimum slope
Drain
%
Siphon
Minimum slope
