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.
32
A.
Manual
reset
thermostat:
Opening
90±5°C;
Manual
rest:
follow
the
procedure
in
the
Paragraph
24.1
to
remove
the
front
panel,
unscrew
the
plug
casing
on
the
on
thermostats
box,
push
the
red
button
with
a
suitable
tool,
and
replace
the
plug.
B.
Automatic
reset
thermostat:
Factory
setting
to
70°C,
opening
70±4°C;
Differential
5±3.5°C
(
WARNING
:
Adjustment
knob
of
the
intervention
threshold
of
the
automatic
thermostat
with
factory
setting
at
70°C,
(check
the
correct
positioning
of
the
graduated
knob)
other
values
can
ensure
the
proper
operation
of
the
unit)
For
some
configurations
of
the
ELECTRIC
HEATER
kit
(except
the
DHW
and/or
plant
electric
heater
of
1,2kW),
placed
on
the
models
namely
MARP
and
MARPS,
you
can
get
two
thermostats
boxes,
one
temperature
control
on
the
DHW
technical
side
and
the
other
one
for
plant
side.
9
START
UP
Before
start
‐
up
Ensure
the
availability
of
diagrams
and
manuals
of
the
installed
appliance.
Check
the
availability
of
diagrams
electrical
and
hydraulic
diagrams
of
the
plant
where
the
appliance
is
connected.
Check
if
the
anti
‐
vibration
couplings
exist
on
hydraulic
pipes.
Check
if
the
shut
‐
off
valves
of
the
hydraulic
circuits
are
opened.
Check
that
the
hydraulic
circuit
has
been
loaded
into
required
pressure
and
vented
from
air.
Check
that
all
the
hydraulic
connections
are
carried
out
correctly
and
that
all
information
on
the
labels
are
respected.
Ensure
that
arrangements
have
been
provided
to
drain
condensate.
Ensure
that
power
cables
and
all
terminals
are
well
connected.
Check
that
the
electrical
connections
have
been
made
according
to
applicable
regulations
including
grounding.
The
voltage
must
be
specified
on
the
nameplate
of
the
unit.
Ensure
that
the
voltage
is
within
the
tolerance
limits
of
(±10%).
Check
that
the
refrigerant
connections
have
been
made
correctly
and
that
the
shut
‐
off
valves
are
open.
Check
that
the
heating
elements
of
the
compressor
are
powered
properly.
Ensure
that
there
are
no
gas
leaks.
Before
the
start
up,
check
that
all
shutting
panels
are
positioned
and
fixed
with
proper
screws.
WARNING:
The
unit
must
be
connected
to
the
electrical
network
and
should
be
adjusted
in
STAND
‐
BY
mode
(powered)
turning
on
the
general
switch
for
a
minimum
of
12
hours
before
start
up
in
order
to
operate
the
crankcase
heaters
of
the
compressor,
for
allowing
the
proper
heat
to
the
compressor
crankcase
(the
heaters
are
automatically
electrified
when
the
switch
is
closed).The
crankcase
heaters
turns
on
properly
if
after
some
minutes
the
temperature
of
crankcase’s
compressor
is
about
10°C
÷
15°C
higher
than
ambient
temperature.
WARNING:
Never
switch
off
the
unit
(for
a
temporary
stop)
by
the
way
of
the
main
switch,
this
last
component
should
be
used
to
disconnect
the
unit
from
the
power
supply
only
for
lengthy
stoppages
(e.g.
seasonal
stoppages).
Besides,
failing
the
power
supply,
the
crankcase’s
resistances
are
not
supplied
thus
resulting
in
a
possible
breakdown
of
the
compressors
once
the
unit
is
switched
on.
WARNING:
Do
not
modify
the
internal
wiring
of
the
unit
otherwise
the
warranty
will
terminate
immediately.
WARNING:
The
summer/winter
operating
mode
has
to
be
selected
at
the
beginning
of
the
related
season.
Frequent
and
sudden
changes
of
this
operation
should
be
avoided
in
order
to
prevent
severe
damages
to
compressors.
WARNING:
For
the
first
installation
and
start
‐
up
of
the
unit,
make
sure
that
the
unit
is
working
correctly
in
both
cooling
and
heating
modes.
10
INDICATIONS
FOR
THE
USER
Write
down
the
identification
data
of
the
unit
for
to
provide
them
to
the
service
center
in
the
event
of
a
request
for
assistance.
The
identification
label
of
the
machine
reports
the
technical
data
and
performance
of
the
equipment.
In
case
of
lost
or
damage
identification
label,
ask
a
duplicate
to
a
Technical
Service
Center.
Tampering
with,
removal,
deterioration
of
identification
label,
makes
difficult
any
operation
of
installation,
maintenance
and
demand
for
spare
parts.
It
is
advisable
to
keep
track
of
the
work
performed
on
the
unit,
so
any
troubleshooting
will
be
easy
to
find.
In
case
of
failure
or
malfunction:
check
the
type
of
alarm
to
indicate
to
the
service
center;
contact
an
authorized
service
center;
if
required
by
the
service
center,
turn
off
the
unit
immediately
without
resetting
the
alarm;
Require
the
use
of
original
spare
parts.
