19
11.4 Circuit Diagram
LBW300 / LBW300LW
J1
14
14
11
K1
V
e
n
tila
to
r
M2
A1
K1
A2
S1
1
2
M1
+4
8V
D
C
KL
1
day
L
nig
ht
PE
N
part
y
M
M
P
1
A
C
F3
C1
X1
-1
L/
N
/P
E
~
2
30V
A
C
-
5
0
H
z
X1
-2
21
ba
r
F2
P >
2
1
W
ä
rm
e
pum
p
e
21
22
E1
11
T >
B1
/
F4
ST
B
TR
+6
5°
C
+9
9°
C
(+
30
- +8
5°
C
)
12
S3
1
2
2
1
S2
E
lekt
ro -
H
e
iz
st
ab
11
6
5
4
3
X6
S5
S4
X6
-1
X6
-2
II
I
II
I
Fernbe
die
nun
g
Fernbe
die
nun
g
min
us
KL
2
N1
J1-
4
J1-
5
N1
J1-
L
J1-
N
N1
N1
J1-
1
3
J1-
1
4
N1
J1-
1
1
J1-
1
2
F1
Le
ge
n
d
e
B
1
R
e
ge
lt
he
rm
ost
a
t-
el
.
H
e
iz
u
n
g
C
1
A
n
la
uf
ko
nd
en
sat
o
r V
e
rd
ic
ht
e
r
E
1
E
le
k
tro
-H
e
iz
s
ta
b
F1
S
te
u
e
rs
ic
her
un
g
F2
P
res
s
o
s
tat
H
o
c
h
dr
u
c
k
F3
The
rm
o
k
o
n
tak
t V
e
rd
ic
ht
er
F4
S
ic
h
e
rhe
it
s
b
e
g
re
n
z
er
-T
he
rm
os
ta
t
e
l.
H
ei
z
s
ta
b
K
1
R
e
la
is
V
e
rd
ic
h
te
r
K
2
R
e
la
is
a
u
f N
1
K
3
R
e
la
is
a
u
f N
1
K
4
R
e
la
is
a
u
f N
1
M
1
Ve
rd
ic
h
te
r
M
2
Ve
n
tila
to
r m
it N
e
tz
te
il
N
1
R
e
g
e
lp
la
ti
n
e
R1
NT
C-
F
ü
h
le
r
S
p
e
ic
h
e
rt
e
mp
e
ra
tu
r
R
2
N
T
C
-F
ü
h
le
r
A
b
lu
ft
te
m
p
e
ra
tu
r
R
3
P
o
te
nt
io
m
e
te
r
Sol
lw
er
t-
War
m
w
a
s
s
er
S
1
S
c
ha
lt
er
W
ä
rm
ep
um
p
e
S
2
S
c
ha
lt
er
el
.H
ei
z
u
ng
S
3
S
c
ha
lt
er
ex
te
rne
P
u
m
p
e
S
4
S
c
h
a
lt
e
r
W
ä
rm
e
p
u
m
pe
E
IN
/A
U
S
ü
b
e
r F
e
rn
b
edi
enun
g
S
5
S
c
ha
lt
er
D
rehz
ahl
u
m
s
c
ha
lt
un
g-
V
e
nt
i üb
e
r F
e
rn
b
e
d
ienu
ng
X
1
K
le
m
m
e
nl
ei
s
te:
N
e
tz
an
s
c
h
lu
s
s
; ex
te
rn
e K
o
m
p
on
en
te
n
J1-
1
0
J1-
2
J1-
6
J1-
7
-9
X1
3
4
5
6
L
PE
N
X1
Heiz
un
g "
EIN
-A
US" e
xte
rn
An
steue
rung
fü
r ex
te
rn
e Pu
mp
e
1,
25A
T
r
25
0V
X1
7
8
X1
9
10
L
N
6
7
2
9
10
3
4
5
11
12
13
14
X4
Pl
a
ti
n
e
N
1
Soll
wert
Sp
eich
erte
mp
.
Ab
lu
ftte
mp
.
R1
R2
R3
An
ste
ue
run
g fü
r ext
ern
e P
um
pe
e
ct.
He
iz
un
g "E
IN/A
US
" v
on
e
xte
rn
B1
Regulating thermostat, electr. Heating
C1
Starting capacitor, compressor
C2
Operating capacitor, fan
E1
El. immersion heater
F1
Control-circuit fuse
F2 HP
pressostat
F3
Thermal contact, compressor
F4
Safety limiter thermostat, el. heating element
K1
Relay, compressor
K2 Relay
on
N1
K3 Relay
on
N1
K4 Relay
on
N1
N1 Controller
board
R1
NTC sensor, storage tank temperature
R2
NTC sensor, exhaust air temperature
R3
Potentiometer, hot water setpoint
S1
Switch, heat pump
S2
Switch, el. heating
S3
Switch, external pump
S4
Switch, heat pump ON/OFF via remote control
S5
Switch, fan speed switchover via remote control
X1
Terminal strip: mains connection; external
components
Exhaust air temp.
Storage tank temp.
Setpoint
Heating “ON/OFF”, external
Control of external pump
Board
N1
Control of external pump
Heating “ON/OFF”, external
Electric heating element
Heat pump
Fan
Remote control
Remote control