Electrical Connections - Fast RHE Series Selection, Use, Installation And Maintenance Manual

The unit is completely wired in the
factory and requires the power supply,
intercepted with inline protections,
indicated on the unit specification plate
in order to be started.
The installer should define the power
supply line based on the length, the
type of cable, the absorption of the unit
and the displacement. (TAB.3)
All electrical connections must be in
accordance with the present standard at
the moment of installation.
CAUTION:
Refer to the electrical layout supplied
with the equipment for installation
needs.
Check that all power cables are
correctly secured to the terminals
when switched on for the first time and
after 30 days of use. Afterwards, check
the connection of the power cables
every six months. Slack terminals could
cause the cables and components to
overheat.
The electrical wiring and connections
must be done by qualified persons in
accordance with regulations currently
in force.
The inverters mounted on the machine
have the function of keeping the flow
rate of the fans constant when the unit
experiences pressure drops (blocked fil-
ters, new accessories installed, etc.). For
this reason it is possible to use certain
dip-switches based on the tables shown
below.
Naturally, before working on the insi-
de of the inverter, you need to have
carefully read the instructions for use,
the user manual and the programming
sheet, and you need to know the ope-
rating modes and the relative settings.
Access to the inverter and changing
the settings should always be carried
out in the absence of supply voltage by
qualified technical personnel, who are
knowledgeable of the safety applica-
tions required by the legislation, regu-
lations and standards in force for the
location of the installation. There are 7
dip-switches: some of them absolutely
Selection, installation, use and maintenance manual
High effi ciency heat recovery unit with cooling circuit - RHE -

Electrical connections

E ve ry e l e c t r i c a l u s e r m u s t b e
connected to the system's earthing
system.
Use the connectors with the earth
symbol to connect the earthing of the
unit and possible accessories to the
earthing of the building.
Respect the installation power supply
and environment conditions.
Keep the panel and wiring away from
electric and magnetic fields that could
disturb, such as inverters, high voltage
power supply lines,etc.
TABLE 3
Voltage
Frequency
Room humidity during operation
Room humidity during operation
Altitude
Changing SET fans flow rate
have to remain at their factory settings
so as not to void the warranty.
NB: The dip-switches 1, 2, 3 and 7 must
absolutely stay in the positions indica-
ted by FAST, while 4, 5 and 6 can be
changed in relation to the desired flow
rates.
27
CAUTION!
Once the connections have been made,
check that:
all the cables have been correctly
connected, and that there are no short
circuits between terminals and the
terminals and ground.
the electrical terminals both within
the electrical panel as well as in the
terminal board of the compressor are
secured and that the mobile and fixed
contacts of the remote control switches
do not show signs of wear.
Do not block the air intake of the panel.
Never connect or disconnect the
remote terminal with energised main
board.
± 10% the nominal voltage (EN60204)
± 1% frequency in continuous way
± 2% for breve periodo
from 30% to 95%, without condensate
or icebild-up (EN60204)
i (EN60204)
ncluded between +5 and +40°C
Up to 1000 m s.l.m (EN60204)
Positions of the fixed
dip-switches.
GB