i
‐
SHWAK
V4
Inverter
air/water
chillers
and
heat
pumps
with
floor
‐
standing
and
remote
condensing
units
23
All
the
components
included
inside
the
dashed
line
"CONNECTIONS
THAT
SHOULD
BE
DONE
BY
THE
INSTALLER"
are
only
indicated
but
not
supplied.
WARNING:
It
is
recommended
to
install
a
3
bar
relief
valve
(not
supplied)
as
shown
in
the
plant
diagram.
It
is
necessary
to
install
an
automatic
air
vent
at
the
highest
point
of
the
plant
circuit.
An
additional
expansion
vessel
is
required
(not
supplied)
for
absorbing
the
volume
changes
in
the
plant
circuit
side
and
domestic
hot
water
side,
when
it’s
necessary.
Note
that,
the
models
MAR/MARS
do
not
include
an
integrated
expansion
vessel
for
plant
side;
therefore
the
installation
of
an
additional
expansion
vessel
is
required
for
these
models.
The
integrated
expansion
vessel
of
8
litres
is
expected
only
in
the
model
“MAR”
without
VE8AT
kit
and
in
the
models
namely
MARP/MARPS.
Please
install
additional
expansion
vessels
if
those
installed
on
units
are
not
sufficient.
With
the
control
logic,
the
domestic
hot
water
can
be
discharged
in
the
water
network
system
when
its
temperature
exceeds
the
safety
values
(by
mean
of
a
control
valve
to
install
before
the
sanitary
utilities).
It
is
up
to
the
installer/designer
to
plan
the
installation
of
such
valve.
WARNING:
There
is
risk
of
scalding
if
the
valve
was
not
installed.
8.5.2
Schematic
diagram
of
the
plant
with
DHW
recirculation
Please
note
that
the
option
of
the
DHW
recirculation
is
available
when
the
additional
plant
management
“GI2”
module
(optional)
is
present.
To
DH
W
‐
R
us
es
Additional
expansion vessel
(not supplied)
Expansion
vessel
Fr
om
the
so
la
r
pl
ant
THE
RECOMMENDED
CONNECTIONS
ARE
THE
INSTALLER’S
RESPONSABILITY
Hydronic circuit
Indoor unit
(models: MARS/MARPS)
OUTDOOR UNIT
It’s
the
installer’s
responsability
to
connect
the
gas
and
liquid
pipes
To
th
e
so
lar
pl
an
t
Solar plant
expansion vessel
(not supplied)
To the domestic
uses
Water
supply
inlet
To the plant
DHW circulation
Boiler
To the boiler (technical water)
From the plant
PLANT
P
T
P
T
Loading/Topping up line
Key
Filter
with
extractable
cartridge
Loading
group
with
pressure
reducer
device
Discharge
valve
3
bar
relief
valve
Shut
‐
off
valve
Non
return
valve
Thermometer
Manometer
0
‐
6
bar
3
‐
way
anti
‐
scalding
thermostatic
valve
DHW
water
mixer
NTC
temp.
sensor
for
immersion
Controlled
discharge
valve
for
overtemperature
All
the
components
inside
the
dashed
line
"CONNECTIONS
THAT
SHOULD
BE
DONE
BY
THE
INSTALLER"
are
indicated
but
are
not
supplied.
WARNING:
It
is
recommended
to
install
a
3
bar
relief
valve
(not
supplied)
as
shown
in
the
plant
diagram
and
domestic
hot
water
side,
when
it’s
necessary.
It
is
necessary
to
install
an
automatic
air
vent
at
the
highest
point
of
the
plant
circuit.
An
additional
expansion
vessel
is
required
(not
supplied)
for
absorbing
the
volume
changes
in
the
plant
circuit
side.
Note
that,
the
MAR/MARS
models
do
not
include
an
integrated
expansion
vessel
for
the
plant
side;
therefore,
you
have
to
install
an
additional
expansion
vessel
in
the
case
of
these
models.
The
integrated
8
‐
liters
expansion
vessel
is
expected
only
in
the
model
“MAR”
without
VE8AT
kit
and
in
MARP/MARPS
models.
You
have
to
install
additional
expansion
vessels
if
those
integrated
on
the
units
are
insufficient.
8.5.3
Particular
schematic
diagram
type
of
the
plant
with
hydraulic
separator
and
mixing
valve
To the plant circuit
Plant
A
AB
B
Technic water return
Plant remote sensor Mixing water sensor
hydraulic separator
KEY
Circolator pump
Discharge valve
Shut
‐
off valve
3
‐
way valve motorized
in two
‐
position
The
indicated
components
are
not
supplied
and
their
connection
should
be
done
by
the
installer.
The
remote
plant
circuit
sensor
is
always
managed.
The
management
of
the
mixing
sensor
is
possible
only
with
optional
module
GI2.
For
the
logic
connections
of
the
valve,
please
refer
to
control
manual
supplied
with
the
unit.
