14
UT66000806 - 02
UTN
All copying, even partial, of this manual is strictly forbidden
8
INSTALLATION SUGGESTIONS
UTN units can be installed both vertically and horizzontally.
The UTN units are always supplied for the A-A placing.
If a different placing is needed the installer can modify it before mounting the
unit (see chapter 3 "POSSIBLE CONFIGURATIONS").
Choose the unit position to have the best ductwork path.
The air sucted by the unit must be filtered: use the MAF or MAFO accessories.
Fit any accessories on the standard unit before installing it.
It is suggested to use anti-vibration joint (available as option) between the
unit and the ducts.
Ductworks, in particular the air outlet one, must be insulated to avoid
moisture formation.
Keep free space around the fan coil to allow proper operation of the unit and
ordinary and extraordinary maintenance.
Install the remote control panel, if any, in a position that can easily be reached
by the user to set the functions and that is suitable for the proper detection
of the temperature, if provided.
Therefore avoid:
- positions directly exposed to sunlight;
- positions exposed to hot or cold draughts;
- obstacles preventing the proper temperature detection.
If the system is shut down during the winter months, drain off the water from
the system to prevent damage due to freezing; if antifreeze solutions are
used, check the freezing point using the table shown at the foot of the page.
Glycol percentage in weight
Freezing temperature (°C)
Capacity correction factor
Pressure drop correction factor
0
0
1,00
1,00
10
-4
0,97
1,05
20
-10
0,92
1,10
30
-16
0,87
0,05
40
-24
0,82
1,20
