5
2.2.1 CABLE
The
cable
section
shown
in
the
table
are
recommended
for
maxi
‐
mum
lengths
of
50m.
For
longer
lengths
or
different
cable
laying,
it
is
up
to
the
designer
to
calculate
the
appropriate
line
switch,
the
power
supply
line
as
well
as
the
connection
to
the
earth
wire
and
connection
cables
depending
on:
length
type
of
cable
absorption
of
the
unit
and
the
physical
location
ambient
temperature.
ATTENTION:
Check
the
tightening
of
all
power
wire
clamps
on
commissioning
and
after
30
days
from
start
‐
up.
Subsequently,
check
the
tightening
of
all
the
power
clamps
every
six
months.
Loose
terminals
can
cause
overheating
of
the
cables
and
components.
2.2.2 CONNECTING POWER SUPPLY
Before
connecting
the
unit
to
the
power
supply
mains
,
en
‐
sure
that
the
switch
is
off
Open
the
front
panel
Use
the
holes
at
the
bottom
on
the
framework
for
the
main
electric
power
supply
cable
and
for
the
cables
of
the
other
external
connections
under
the
responsibility
of
the
installer.
It
is
forbidden
to
access
with
electric
cables
in
positions
not
specifically
envisioned
in
this
manual.
Avoid
direct
contact
with
not
insulated
copper
piping
and
with
compressor.
Identify
the
clamps
for
the
electric
connection,
always
refer
to
the
electric
layout
supplied
with
the
unit.
For
the
functional
connection
of
the
unit
bring
a
power
supply
cable
to
the
electric
control
board
inside
the
unit
and
connect
to
the
U
‐
N
and
PE
clamps
respecting
(U)
phase,
(N)
neutral,
(PE)
earth
in
case
of
single
‐
phase
power
supply
(220V
‐
1~60Hz),
Re
‐
position
the
inspection
panels
Ensure
that
all
protections
removed
for
the
electric
connec
‐
tion
have
been
restored
before
electrically
powering
the
unit.
Position
the
main
system
switch
(external
to
the
appliance)
at
“ON”.
2.2ELECTRICAL CONNECTIONS
The
ANK
heat
pumps
are
completely
wired
at
the
factory
and
only
require
connection
to
the
electrical
mains,
downstream
from
a
unit
switch,
according
to
that
envisioned
by
the
Standards
in
force
on
this
subject
in
the
country
of
installation.
It
s
also
advised
to
check
the
following:
The
electrical
mains
features
are
suitable
For
the
absorption
values
indicated
in
the
electrical
data
table
in
technical
manual.
Also
taking
into
consideration
any
other
machines
operating
at
the
same
time.
The
unit
is
only
powered
when
installation
has
been
completed
(hydraulic
and
electric).
Respect
the
connection
indications
of
the
phase,
and
ground
wires.
The
power
supply
line
must
have
a
relevant
protection
mounted
upstream
against
short
circuits
and
dispersions
to
earth,
which
isolates
the
system
with
Respect
to
other
utilities.
The
voltage
must
be
within
a
tolerance
of
±10%
of
the
nominal
power
supply
voltage
of
the
machine
(for
unbalanced
three
‐
phase
unit
max
3%
between
the
phases).
Whenever
these
parameters
are
not
respected,
contact
the
electric
energy
public
body.
For
electric
connections,
use
the
cables
with
double
isolation
according
to
the
Standards
in
force
on
this
subject
in
the
differentcountries.
The
use
of
an
omnipolar
magnet
circuit
breaker
switch
is
mandatory,
in
compliance
with
the
IEC
‐
EN
Standards
(contact
opening
at
least
3
mm),
with
suitable
cutoff
power
and
differential
protection
on
the
basis
of
the
electric
data
table
shown
below,
installed
as
near
as
possible
to
the
appliance.
It
is
mandatory
to
make
an
effective
earth
connection.
The
manufacturer
cannot
be
considered
responsible
for
any
damage
caused
by
the
lack
of
or
ineffective
appliance
earth
connection.For
units
with
three
‐
phase
power
supply,
check
the
correct
connection
of
the
phases.
