User manual
an
immer
sion
heater
.
The
T
ap
W
ater
Stratification
system
impr
oves
the
ef
ficiency
of
heat
transfer
by
keeping
the
water
in
distinct
thermal
layers
in
the
water
tank.
The unit
is
fitted
with
a
r
egulating
computer
,
which
is
contr
olled
over
a
graphic
display
unit.
Heat
is
distributed
thr
oughout
the
house
over
a
hydr
onic
heating
system
r
eferr
ed
to
as
low temperatur
e
system
with
a
maximal
water
temperatur
e
to
radiators
( Feed
line
temperature)
of
65°C.
Most
of
the
heating
demand
is
taken
car
e
of
by
the
heat
pump
(compressor
unit),
the
auxiliary
heater
being
star
ted
only
when
demands
exceed
available
heat
pump capacity.
AWA-SS series
consists
of
five
main
components:
a.
Heat
Pump
Unit
Rotory or Scr
oll-compr
essor
Stainless
steel
heat
exchangers
Cir
culation
pumps
for
heating
systems
V
alves
and
safety
equipment
for
r
efrigerant
system,
complete
with
necessary
electric
components
b.
W
ater
Heater
150 or 200
litr
e
Lined
with
copper
sheet
against
corr
osion
or
made
of
stainless
steel
Maintenance
fr
ee
as
no
anode
is
used
c.
Reversing
V
alve
Opening
or
closing
the
connection
to
water
heater
accor
ding
to
operating mode:
heating
or
warm
water
pr
oduction
d.
Auxiliary
Heater
3 / 6 / 9
kW
electric
heating
element
Three-step
capacity
contr
ol
Fitted
on
supply
line
Delivers
back-up
heat
in
case
of
gr
eat
heat
demand
that
exceeds
heat
pump
capacity
Star
ts
automatically
,
pr
ovided
operating
mode
“AUTO”
has
been
selected
e.
Regulating
Equipment
The
r
egulating
system
contr
ols
heat
pump
components
(compressor
,
cir
culation
pumps,
auxiliary
heater
and
r
eversing
valve).
Based
on
data
r
eceived
fr
om sensors,
it
star
ts
or
stops
heat
pump
operation
and
determines
whether
he
a
ting
or
warm
water
shall
be
pr
oduced.
The
system
consists
of:
Control
computer
with
graphic
display
unit
T
emperatur
e
sensors
(outside
air
,room,
feed
line,
r
eturn
line
)
2.1 Heat
Pump
Principle
A
heat
pump
can
exploit
the
ener
gy
contained
in
natural
heat
sour
ces.
Or
,
to
put
it
dif
fer
ently
,
the
heat
pump
”collects”
heat
ener
gy
fr
om
the
heat
sour
ce.
This
makes
the
heat
pump
a
very
environmentally
friendly
and
economically
sound
alternative
for
space
heating.
a.
b
The
Outdoor unit is used as the
heat
pump’
s
evaporator
.
Here
the
heat
ener
gy
of
the
Outdoor Unit
causes
the
r
efrigerant,
cir
culating
thr
ough
the
evapo
rator
,
to
boil
and
turn
into
a
gas
–
it
evaporates.
c
The
r
efrigerant,
having
absorbed
heat
ener
gy
,
is
cir
culated
to
the
compr
essor
wher
e
pr
essur
e
and
temperatur
e
ar
e
raised.
d
The
r
efrigerant
continues
to
the
condenser
.
When
condensing,
it
r
eleases heat
ener
gy
to
the
heat
carrier
,
cir
culating
thr
ough
the
condenser
.
The
temperatur
e
of
the
r
efrigerant
sinks,
and
it
r
eturns
to
its
liquid
state.
e
The
heat
ener
gy
r
eleased
is
carried
by
the
heating
cir
cuit
to
water
heater
and
radiator
or
floor
heating
systems.
At
last
the
r
efrigerant
is
led
thr
ough
the
expansion
valve,
wher
e
its
pr
essur
e
is
r
educed,
and
then
con
tinues
to
the
evaporator
The
pr
ocess
is
r
estar
ted.
4