Vallox A3741, Manual

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15
© Vallox Oy - All rights reserved
TECHNIC
AL SPECIFIC
ATIONS
INTERNAL ELECTRICAL CONNECTION
TK
NTC
GND
P
T
W
T
2
3
1
YE
G
N
YE
G
N
BN BU
BN
BU
YE
G
N
YE GN
D/I2
BN
BU
BN
BN
N
L
N
L
N
L
N
AHS
RH%
RH% CO2
230V 50Hz
90°C
TESTER
M
130°C
T1 T2
R1
D/I1
BN
YE
G
N
BU
YE
G
N
W
T
YE GN
+11V1
MB_B
MB_A MB_A
MB_B
+24V
RS_A
RS_B
GND
AN/I
GND
+24V
RS_A
RS_B
GND
RM/I
RM/O
+24V
+24V
+24V
RS_A
+24V
RS_A
RS_B
GND
RS_B
GND
YE
G
N
BU
BU
L
1
2
3
4
5
1 2 3 4 5 6
A
B
C
D
MB_A External Modbus A signal
MB_B External Modbus B signal
+24V +24V voltage (DC)
GND Digital and analog ground potential
RS_A Local hardware Modbus A signal
RS_B Local hardware Modbus B signal
NTC External temperature sensor connector
D/I1 Digital input 1
D/I2 Digital input 2
11V1 11.1 V operating voltage
AN/I Analog input 0-10VDC
RM/I 24V relay input
RM/O 24V relay output
T Supply air fan
P Extract air fan
M Damper motor
TK Safety switch
AHS Post-heating control
RH% Internal humidity sensor
RH% CO2
Internal humidity and carbon
dioxide sensor
R1
Post-heating resistor with 90°C
and 130°C overheating protection
BK Black
BU Blue
BN Brown
WT White
GY Grey
YE Yellow
YEGN Yellow-green
CABLE COLOURS
A Motherboard
B
1. Extract air fan tacho (WT)
2. GND (GN)
3. Extract air fan PWM (YE)
4. Supply air fan tacho (WT)
5. GND (GN)
6. Supply air fan PWM (YE)
C
1. Extract air
2. Outdoor air
3. Supply air
4. Exhaust air
5. Supply air from the HR cell
D LAN