Ferroli OMNIA S 3.2, Installation, Maintenance And User Manual, Page: 31 / 68

31
EN
Cod. 3541V950 - Rev. 00 - 05/2021
OMNIA S 3.2
CAUTION
When the unit is not running for a long time,make sure the unit is powered on all the time,if you want to cut off the power,the water in the
system pipe needs to be drained clean,avoid the pump and pipeline system be damaged by freezing.Also the power of the unit needs to be
cut off after water in the system is drained clean.
• The unit might drain-off too much water through the pressure relief valve.
• Water quality should be complied with EN 98/83 EC Directives.
• Detailed water quality condition can be found in EN 98/83 EC Directives.
7.5.6 Water piping insulation
The complete water circuit including all piping, water piping must be insulated to prevent condensation during cooling operation and reduction of the heating and coo-
ling capacity as well as prevention of freezing of the outside water piping during winter. The insulation material should at least of B1 fire resistance rating and complies
with all applicable legislation. The thickness of the sealing materials must be at least 13 mm with thermal conductivity 0.039 W/mK in order to prevent freezing on the
outside water piping.
If the outdoor ambient temperature is higher than 30°C and the humidity is higher than RH 80%, then the thickness of the sealing materials should be at least 20 mm
in order to avoid condensation on the surface of the seal.
7.6 Electrical connections
7.6.1 Electrical data
Table. 5 - Electrical data
Indoor unit MOD.
10 16 16T
Power input " 220-240V 50 Hz 220-240V 50 Hz 380-415 3+N+PE 50 Hz
Max current input A 13 13 10
Automatic circuit breaker A 16 16 16
Power cable section mm
2
3x1,5 3x1,5 5x1,5
The customer must install the automatic circuit breaker.
Communication cable between indoor and
outdoor unit
MOD.
10 16 16T
Wiring size (shielded cable) mm
2
3x0,75
Example of basic connections for a single phase system
P
INDOOR
UNIT
Q
E
E
P
OUTDOOR UNIT
Q
230V-1-50Hz 230V-1-50Hz
CB CB
N N
N N
WARNING
A main switch or other means of disconnection, having a contact separation in all poles, must be incorporated in
the fixed wiring in accordance with relevant local laws and regulations.
Switch off the power supply before making any connections.
Use only copper wires. Never squeeze bundled cables and make sure they do not come in contact with the piping
and sharp edges. Make sure no external pressure is applied to the terminal connections.
All field wiring and components must be installed by a licensed electrician and must comply with relevant local laws
and regulations.
The field wiring must be carried out in accordance with the wiring diagram supplied with the unit and the instruc-
tions given below.
Be sure to use a dedicated power supply. Never use a power supply shared by another appliance.
Be sure to establish a ground. Do not ground the unit to a utility pipe, surge protector, or telephone ground. Incom-
plete grounding may cause electrical shock.
Be sure to install a ground fault circuit interrupter (30 mA). Failure to do so may cause electrical shock.
Be sure to install the required fuses or circuit breakers.