OPERATING AND INSTALLATION INSTRUCTIONS LBE 250 / LBE 500
PAGE 34
18. Wiring diagram
Floa
ting
swit
ch
Sensor pla
te
14 pole cable
Displa
y pla
te
14 pole cable
Ex
ter
nal
temper
atur
e
sensor
Swit
ch
input
Visualisa
tion
of faults
M
ains c
onnec
tion
230 V
AC
50 H
z
M
ot
or
Control board
LBE 250/ LBE 500
Floating
output
E-hea
ting 1
O
utlet pump
W
at
er v
alv
e
UVC- ser
ies
connec
tion unit
M
ix
er or
E-hea
ting 2
E-hea
ting 3
Cir
cula
tion pump
or v
en
tila
tion devic
e
UVC- pipe
Connecting terminals 1 through 24 are
labelled on the motherboard and desi-
gned as relay outputs with 230 V
(see
figure)
. In the case of the device design
with the water heater battery, the three-
way motor mixer valve and the circulati-
on pump are connected to the following
relay outputs:
Three-way motor mixer valve (Termi-
nals 15 through 18) :
Terminal 15 - Close Mixer phase
Terminal 16 - Open Mixer phase
Terminal 17 - Zero conductor
Terminal 18 - Neutral conductor
(earthing)
Circulation pump (Terminals 19 through
21):
Terminal 19 - Phase
Terminal 20 - Zero conductor
Terminal 21 - Neutral conductor
(earthing)
With
Ventilation Device Switch Input
, the
air humidification unit can be switched
on (break contact) and off (make contact)
in parallel with the ventilation device.
The switch input must be activated in the
Expert menu if automatic synchronous
operation cannot be guaranteed because
the sound level is too low.
In the case of
External Temperature
Sensor
, a PT1000 sensor, on the basis
of which the air outlet temperature is
controlled automatically, can be connec-
ted optionally. This is required only in
connection with a second heater battery
(low-temperature heating/air heating).
The
floating output
can be used for a
possible visualisation of faults. For a
function check with an external open-
loop and closed-loop control unit.
E-heating 1, E-heating 2
and
E-heating
3
and
the ventilation device
are activ in
the case of a devicedesign with electric
heater battery only.
US
ER
G
ENER
A
L
S
PE
CI
A
LI
S
T PER
S
O
NNEL
