i
‐
SHWAK
V4
Inverter
air/water
chillers
and
heat
pumps
with
floor
‐
standing
and
remote
condensing
units
21
8.4.4.2
Outdoor
unit
The
outdoor
units
have
been
designed
in
a
way
to
use
their
own
basement
as
a
drain
pan.
•
Locate
the
hole
at
the
basement
of
the
unit
between
the
finned
coil
and
fan,
A.
•
Connect
to
the
hole
the
provided
fitting
joint,
B.
•
Connect
a
hose
to
the
nozzle
of
the
supplied
fitting
joint.
•
Direct
the
hose
into
the
disposal
place
for
condensate
water.
•
Keep
a
sufficient
slope
to
ensure
the
smooth
flow
of
condensate
water.
8.4.5
Connection
of
the
relief
valve’s
discharge
A
drain
pipe
in
PVC
material
is
situated
on
the
rear
side
of
the
indoor
unit,
it
is
internally
connected
to
the
unit
on
both
safety
valves
outlet
connections
of
the
plant
side/DHW
technical
side
and
of
the
solar
integration
circuit
(MARS/MARPS
models)
in
order
to
ensure
the
proper
discharge
of
the
water
when
the
relief
valve
opens
in
case
of
overpressure.
•
Connect
a
rubber
pipe
to
the
drain
pipe
by
means
of
hose
pipe
joint
connector
of
14
mm
(not
supplied)
•
Secure
it
with
pipe
clamp.
•
Direct
the
hose
towards
an
appropriate
location
for
unloading.
•
A
sufficient
slope
should
be
maintained
to
ensure
the
smooth
flow.
•
Do
not
"strangle"
the
pipe.
•
Check
the
proper
water
drainage
(A)
Hole
for
pressure
relief
valve
discharge
8.4.6
Plant
circuit
loading
WARNING:
Check
all
the
loading/topping
up
operations.
WARNING:
Before
beginning
the
loading/topping
up
operation
of
the
plant
circuit,
disconnect
the
unit
for
the
electric
power
supply.
WARNING:
The
loading/topping
up
of
the
plant
circuit
must
always
be
done
under
controlled
conditions
of
pressure
(max
1,5
bar).
Make
sure
that
you
have
installed
on
the
line
of
loading/topping
up
a
pressure
reducer
and
a
relief
valve
as
indicated
in
the
Paragraph
8.5.
WARNING:
The
water
on
the
loading/topping
up
pipe
must
be
suitably
pre
‐
filtered
from
any
impurities
and
suspended
particles.
Make
sure
that
you
have
installed
a
filter
as
indicated
in
Paragraph
8.5.
WARNING:
Before
proceeding
to
the
loading/topping
up
of
the
plant
circuit,
place
in
mid
‐
travel
the
three
‐
way
valve
of
the
indoor
unit
by
actuating
the
black
lever.
Restore
the
normal
position
of
the
black
lever
after
finishing
the
loading/topping
up
operation
of
the
plant
circuit.
WARNING:
Before
beginning
the
loading
/topping
up
operation,
unscrew
the
plugs
of
the
air
vent
valves
(two
on
MAR/MARS
models
and
three
on
MARP/MARPS
models).
Tighten
the
plugs
after
finishing
the
operation
of
loading/topping
up
of
the
plant
circuit
system.
WARNING:
instead
of
using
a
fixed
installation
of
the
line
filling/topping
up,
as
indicated
in
Paragraph
8.5,
you
can
alternatively
use
the
discharge
valves
of
which
is
already
provided
with
the
puffer
of
the
indoor
unit.
In
this
case,
it
is
mandatory
that
the
inlet
water
should
be
pre
‐
filtered
with
(with
at
least
100
microns
pre
filter)
and
the
pressure
of
the
water
entering
should
be
controlled
(max
1,5
bar).
Before
starting
the
loading/topping
up
operations,
the
connection
ring
between
the
valve’s
body
and
its
actuator
must
be
rotated
with
90°
in
order
to
unhook
the
two
parts.
After
separating
the
two
parts,
the
manoeuvring
shaft
which
previously
is
interposed
between
the
two
parts
must
be
rotated
by
45°
counter
‐
clockwise.
Thereby,
the
three
ways
of
the
valve
can
communicate
between
each
other
and
consequently
the
plant
circuit
side
with
the
DHW
technical
circuit
side.
To
unlock
the
valve,
after
the
loading
operation,
place
the
shaft
in
the
initial
position,
turning
it
again
by
45°
(this
time
in
a
clockwise
direction),
connect
the
two
parts
(make
sure
at
this
step
that
the
control
shaft
is
completely
inserted
in
the
corresponding
actuator
casing)
and
fix
them
by
turning
the
ring
by
90°
till
to
reach
the
initial
locked
position.
(1)
Connection
ring
between
the
valve’s
body
and
actuator
A
B
