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2.09.220 E/18.11.04/PDF/www
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Vallox Oy FIN-32200 LOIMAA Tel. +358 2 763 63 00 Fax + 358 2 763 15 39
Internet: www.vallox.com
VALLOX 252 D
EXTERNAL ELECTRICAL CONNECTIONS
VALLOX 252 D external electrical connections
LON converter
Connected in place of the
R 6K8 resistor (contactors
%RH-1/+ and %RH-1/S)
Option
HUMIDITY SENSOR 2
Option
CO
2
SENSOR
POSSIBL
Y MORE THAN ONE
OPTION
NOTE!
Faulty coupling of + wire
DESTROYS THE SENSOR.
CONTROL P
ANEL 1
POSSIBL
Y MORE THAN ONE
1 INCLUDED AS ST
ANDARD
NOTE!
Faulty coupling of + wire
DESTROYS THE CONTROL P
ANEL
REMOVE THE RESISTOR WHEN MOUNTING
THE FIRST HUMIDITY SENSOR IN THE UNIT
.
NOTE! When the V
ALLOX 252 D unit is equipped with a PREHEA
TER and
a POST
-HEA
TING UNIT WITH W
ATER CIRCULA
TION, the L1 and L on the
terminal block are connected.
In this case, THE PREHEA
TER DOES NOT NEED a separate power supply
.
NOTE! When the V
ALLOX 252 D unit is equipped with a PREHEA
TER and
an ELECTRIC POST
-HEA
TING UNIT
, a separate 16A power supply is
needed for PREHEA
TING.
BOOSTER SWITCH /
FIREPLACE SWITCH
(Additional control option)
FAN CONTROL
Voltage signal: 0...10 VDC
Current signal: 0...20mA
Moving jumpers in the motherboard,
see the internal wiring diagram
FAUL
T SIGNAL
(1A, 24 VDC)
REMOTE MONITORIN
G
(Additional control option)
VALLOX 252 D
Distribution panel
REMOTE MONITORING
S
REMOTE MONITORING
GND
BOOSTER SWITCH
FAUL
T SIGNAL
HUMIDITY SENSOR 1
Option
230 V/400 V
16 A
NOMAK 2x2x0,5+0,5
16 A
PE
N
3x2.5S (4x2.5S)
2x0,5
2x0.5
LonW
orks-FT10
-
A
B+
S
2
+
1
1
+
S
2
NOMAK 2x2x0,5+0,5
AM
20
PDS S
B
-
+
A
M
PDS +
19
% RH-1/+
% RH-1/S
% RH-2/S
% RH-2/+
18
FAULT
13
REMOTE GND
FAULT
17
15
REMOTE S
16
14
12
BOOSTER
7
A
9
10
11
M
B
8
6
-
1
3
5
4
2
L
+
L1
N
R= 6K8
2x0.5
4 X 0.5
NOMAK 2x2x0,5+0,5
B
-
+
S
GND
