i
‐
SHWAK
V4
Inverter
air/water
chillers
and
heat
pumps
with
floor
‐
standing
and
remote
condensing
units
9
15)
Integrated
climatic
system
for
plant.
16)
Controller
logic
for
plant
remote
temperature
sensor.
17)
Integrated
controller
logic
for
double
set
‐
point
of
plant
side.
18)
Integrated
controller
logic
for
intelligent
energy
resources.
Accessories:
1)
Single
and
three
phase
electric
heaters
of
2
‐
3
‐
4,5
kW,
common
to
the
plant
and
DHW
technical
sides
(if
the
optional
diverter
valve
kit
is
present),
managed
in
integration
and/or
substitution
mode.
Double
safety
level
with
automatic
and
manual
reset
thermostat
for
protecting
the
system
and
the
user
(optional
kit,
factory
‐
fitted
mod.
RExxxx).
2)
Mixer’s
controller
logic
for
plant
side
in
both
heating
and
cooling
operations.
Controller
logic
for
solar
integration.
Controller
logic
for
relaunching
circulator
(secondary)
plant
side
(optional
kit,
installed
in
the
factory
mod.
GI2).
3)
Boiler
kit
on
DHW
technical
side:
allows
connecting
the
unit
with
additional
energy
source
(boiler
or
others
similar)
to
manage
in
integration
and/or
substitution
of
the
heat
pump
(KCACS
kit).
5.4 MARS/MARPS
In
addition
to
the
above
indicated
characteristics:
1)
GI2
module
for
solar
integration
management
logic
already
included.
Management
logic
of
the
relaunching
circulator
(secondary)
plant
‐
side.
Mixing
management
logic
for
plant
‐
side
for
both
heating
and
cooling.
2)
Integration
and
management
of
solar
DHW
technical
‐
side
equipped
with
modulating
High
efficiency
circulator
according
to
ERP
Directive
with
EEi
≤
0.21.
3)
Flow
regulator
2÷12
l/min
loading
operations,
washing
and
removal
of
the
circulator
without
unloading
the
plant
circuit.
4)
Compact
safety
group
with
safety
valve
and
pressure
gauge.
5)
Integrated
ball
valve
with
thermometer
and
check
valve.
6)
Temperature
sensors
DHW
storage
technical
‐
side
and
solar
collectors.
7)
Expansion
vessel
not
included
to
be
installed
externally.
6
TECHNICAL
CHARACTERISTICS
The
reversible
heat
pumps
i
‐
SHWAK
V4
series
are
designed
for
residential
and
commercial
applications,
these
units
are
extremely
versatile
and
can
operate
in
heat
pump
mode
with
the
ability
of
producing
hot
water
at
a
temperature
of
63°C
using
the
electric
heaters
for
environmental
heating
and
sanitary
applications.
The
new
i
‐
SHWAK
V4
system,
which
is
the
result
of
the
evolution
of
the
previous
model
V3,
is
the
ideal
solution
for
the
total
home
climate
control.
For
new
or
already
existing
house
if
equipped
with
a
radiant
floor
or
fan
coil
as
heating
system,
with
feeding
from
electric
power
network
and
a
renewable
energy
sources.
The
INVERTER
compressor
with
brushless
DC
motor
technology,
matched
with
electronic
expansion
valve,
pump
and
variable
speed
blower
always
with
brushless
motor,
as
well
as
the
integrated
circulators,
optimize
the
power
consumption
and
the
operation
efficiency
of
the
refrigerating
components
and
of
the
entire
system.
6.1
FRAME
The
“i
‐
SHWAK
V4”
units
are
all
made
of
hot
‐
galvanised
thick
sheet
metal,
painted
with
polyurethane
powder
enamels
at
180°C
to
ensure
the
best
resistance
against
atmospheric
agents.
The
frame
is
self
‐
supporting
with
removable
panels.
All
screws
and
rivets
for
outdoor
installations
are
in
galvanized
stainless
steel.
The
indoor
units
also
have
a
self
‐
supporting
structure
made
of
galvanized
steel
with
removable
painted
panels.
6.2
REFRIGERANT
CIRCUIT
The
refrigerant
circuit
has
been
manufactured
by
means
of
international
primary
brands
components
and
according
to
the
UNI
EN
13134
rule
concerning
welding
procedures.
The
refrigerant
gas
used
in
these
units
is
R410A.
The
refrigerant
circuit
includes:
4
way
reverse
cycle
valve,
electronic
expansion
valve,
liquid
separator,
liquid
receiver,
valves
for
maintenance
and
control,
pressure
safety
device
(high
pressure
switch),
pressure
transducers
to
accurately
control
the
evaporating
and
condensing
pressures,
filters
for
throttling
valve
to
avoid
its
clogging,
SAE
valves
for
liquid
and
gas
line.
6.3
COMPRESSORS
The
employed
DC
inverter
compressors
are
twin
rotary
hermetic
type,
designed
especially
to
be
used
with
R410
refrigerant.
The
compressors
are
all
supplied
with
thermal
overload
protection
and
are
mounted
on
a
rubber
material
acting
as
shock
absorbers.
The
compressors
are
mounted
in
a
separate
chamber
in
order
to
be
separated
from
the
air
flow
for
reducing
noises
and
are
also
supplied
with
crankcase
heater
which
operates
in
order
to
avoid
the
oil
dilution
which
may
cause
seizure
of
the
compressor.
The
crankcase
heater
starts
when
the
compressor
remains
off
for
duration
no
less
than
30
minutes
and
when
the
discharge
temperature
is
under
20°C
(with
hysteresis
of
2.0°C).
When
the
compressor
restarts,
the
crankcase
heater
will
stop
operation.
We
recommend
to
turn
on
the
unit
and
to
put
it
in
standby
mode
at
least
6
hours
before
the
first
start
‐
up.
The
inspection
of
the
compressor
can
be
made
through
the
front
panel
of
the
unit
that
allow
the
maintenance
of
the
compressors
even
if
the
unit
is
working.
6.4
AIR
SIDE
EXCHANGERS
The
air
side
exchangers
are
made
up
of
copper
pipes
and
aluminium
fins.
The
diameter
of
the
copper
pipes
is
9.52mm,
the
thickness
of
the
aluminium
fins
is
0,1mm.
The
pipes
are
mechanically
expanded
into
the
aluminium
fins
to
improve
the
heat
exchange
factor.
The
geometry
of
these
condensers
guarantee
a
low
air
side
pressure
drop
and,
then,
the
use
of
low
rotation
speed
(and
low
noise
emission)
fan
motors.
