i
‐
SHWAK
V4
Inverter
air/water
chillers
and
heat
pumps
with
floor
‐
standing
and
remote
condensing
units
Note:
All
the
pictures
in
this
manual
are
for
explanation
purpose
only.
They
may
be
slightly
different
from
the
unit
you
purchased.
The
actual
shape
shall
prevail.
18
1
Positioning
on
the
floor
Provide
lifting
from
the
floor
of
the
unit:
20
mm
without
conveying
the
condensate
drain
90
÷
100
mm
to
allow
the
conveying
of
the
condensate
drain
In
case
of
installation
in
areas
subjected
to
extreme
cold
or
heavy
snow,
where
there
is
the
possibility
of
freezing,
it’s
recommended
to
provide
suitable
frost
protection
systems.
(A)
Level
(1)
condensate
drain
pipe
Suspended
positioning
In
the
case
of
suspended
installation,
adequate
brackets
must
be
used
to
support
the
weight
of
the
unit
and
also
depending
also
on
the
type
of
the
wall
to
which
should
be
fixed.
Make
sure
that
the
section
of
the
wall
doesn’t
overlap
to
bearing
elements
of
construction,
pipelines
or
power
lines.
(2)
brackets
for
positioning
(not
supplied
with
the
unit)
Both
units
must
be
positioned
on
a
levelled
surface;
the
holders
used
for
installation
must
be
able
to
support
its
weight.
8.4
HYDRAULIC
CONNECTIONS
The
hydraulic
connections
have
to
be
installed
in
accordance
with
national
and/or
local
regulations;
pipes
can
be
made
up
of
steel,
galvanized
steel
or
PVC.
Pipes
have
to
be
designed
depending
on
the
nominal
water
flow
and
on
the
hydraulic
pressure
drops
of
the
system.
All
pipes
have
to
be
insulated
with
closed
‐
cell
material
of
adequate
thickness.
It
is
recommended
to
connect
the
indoor
unit
to
the
piping
using
flexible
joints.
The
hydraulic
circuit
should
include
the
following
components:
Hole
‐
thermometers
to
monitor
the
circuit’s
temperature.
Manual
shut
‐
off
valves
to
separate
the
chiller
from
the
hydraulic
circuit.
Loading
group
and
discharge
valve.
Anti
‐
vibration
joints
and
supports
for
the
piping
where
necessary.
WARNING:
make
sure
that
the
size
of
the
pipes
shall
not
exceed
the
maximum
head
loss
on
the
plant
side
given
in
the
table
in
the
Paragraph
14.3
(see
the
available
pressure
head
data).
WARNING:
connect
the
pipes
to
their
attacks
always
by
the
way
of
key
against
key
method.
WARNING:
The
models
MAR/MARS
do
not
include
an
integrated
expansion
vessel
on
plant
side.
The
installer
should
verify
that
if
the
expansion
vessel
is
adequate
to
the
real
capacity
of
the
plant
circuit,
otherwise
should
be
provide
an
additional
expansion
vessel.
In
the
case
of
VE8T
kit,
the
plant
side
expansion
vessel
has
a
limited
capacity
of
8
litres.
The
installer
should
verify
that
if
the
expansion
vessel
is
adequate
to
the
real
capacity
of
the
plant
circuit,
otherwise
should
be
provide
an
additional
expansion
vessel.
As
for
the
installation
position
of
the
expansion
vessel
(indicated
as
additional
expansion
vessel),
please
refer
to
Paragraph
8.5.
WARNING:
The
plant
side
expansion
vessel
installed
in
the
models
MARP/MARPS
is
with
a
limited
capacity.
It
is
up
to
the
installer
to
check
if
the
expansion
vessel
is
adequate
to
the
real
capacity
of
the
plant
circuit,
otherwise
an
additional
expansion
vessel
should
be
provide.
As
for
the
installation
position
of
the
expansion
vessel
(indicated
as
additional
expansion
vessel),
please
refer
to
Paragraph
8.5.
WARNING:
the
expansion
vessel
on
the
DHW
side
is
appropriate
for
the
volume
of
the
circuit
but
does
not
take
into
account
the
additional
volume
due
to
the
integration
of
the
boiler
kit
circuit.
It
is
the
installer's
responsibility
to
check
and/or
add
an
expansion
vessel
in
the
case
of
a
boiler
kit.
WARNING:
check
that
the
weight
of
the
pipes
does
not
grave
about
the
structure
of
the
machine.
WARNING:
unit
water
return
pipe
should
be
in
correspondence
with
the
connection
labelled:
”TECHNIC
WATER
RETURN”,
otherwise
the
evaporator
may
freeze.
WARNING:
If
the
water
flow
switch
(factory
mounted)
is
altered
or
removed,
the
warranty
will
no
longer
be
valid.
Please
refer
to
the
wiring
diagram
for
the
water
flow
switch
electric
connections.
The
metallic
Y
‐
filter
must
be
kept
clean,
so
make
sure
that
it
is
still
clean
after
the
installation
of
the
unit,
and
then
check
it
periodically.
The
water
on
the
loading/topping
up
pipe
must
be
opportunely
pre
‐
filtered
from
any
suspended
particles
and
impurities
through
the
use
cartridge
filter
(washable,
wrapped
wire,
etc.)
of
at
least
100
microns.
Check
the
water
hardness
with
which
you
load
and
top
up
the
plant
circuit.
With
particularly
hard
water,
in
this
case
it
is
necessary
to
utilize
a
water
softener.
For
treating
water
for
the
plant,
please
refer
to
UNI
8065.
The
heating
system
and
safety
relief
valves
must
meet
with
the
requirements
of
regulation
EN
12828.