AERTESI srl SOFFIO INSTALLATION USE AND MANTEINANCE MANUAL
Page 7 AER.MIU.GB.SOFFIO.000.02.15
6-IDRAULIC CONNECTIONS
The unit is equipped with coil suitable to work with water, water mixed with glycol. In wither season there is
the possibility to empty the water circuit if there is a risk of icing inside the battery.
To avoid the formation of condensation on the surfaces of the machine during the summer period, when the
fan is not on, it is recommended to stop the flow of chilled water in the coil through a motorized valve.
All the pipes, in particular those of the chilled water, must be insulated to prevent dripping of condensation.
For ease of maintenance, it is advisable to provide manual ball valves, in order to exclude the unit from the
plant .
While connecting pipe, don’t twist coils and valves, it is recommended to use two wrench.
Valves can be supplied in the kit (to be assembled by the installer) or by delivered by the installer.
When the installation is completed and the hydraulic system has been loaded, it is necessary to remove the
air inside the coil using the appropriate valve. Repeat the purging procedure after the activation of the
circulation pump, as long for to be sure all air bubbles will be completely eliminated.
Connect the condensate drain connection to a drainage pipe of internal diameter of 20mm. The pipe must
have a constant slope of at least 2 ° downwards. It is advisable to make a siphon with a minimum height as
shown in the figure below.
Condensate drain pipe
7- ELECTRICAL CONNECTIONS
Insert a manual switch close to the unit to be able to exclude it from the electric line during the maintenance
operations.
Provide a fuse or circuit breaker to protect the unit.
h>p(p=static
pressure, in mm)
