10
© VALLOX • We reserve the right to make changes without prior notice.
What the units include can vary depending on the sales area.
Vallox
121
SE
TECHNICAL DATA
Internal electrical connection Vallox 121 SE
(code A3560)
S Supply air fan
E Extract air fan
M1 Autotransformer with
protective voltage coil
230VAC/16VAC
L Earthed cord
HK Maintenance switch
T1 Heating radiator safety
thermostat 130 °C (reset,
switch the unit off)
T2 Overheat protection 90 °C
(automatic reset)
R2 Post-heating radiator
M Damper motor 24 VAC
Wire colours
s = blue
m = black
r = brown
va = white
vi = green
p = red
h = grey
kv = yellow-green
16 V
0 V
0 V
230 V
7023500
2011-11-17 JK
M1
GND
-+
A
B
PWM1
PWM2
S RH2
S RH1
L
N
NO
NC
90°C
130°C
R2
L
N L
r
N N L L1 L2 L3
N1 L4
NC
GND
PWM
1
s
s
r
r
s
s
kv
kv
p
p
k
k
HK
0-10V DC
A B - + M S + S +
+
1 2
S S -
%RH1
%RH2
12x0.25mm²
3184600
PWM
2
r
s
s
kv
kv
r
r h
h
5
10
3
1
NO
L
R
r
s
T1
T2
1
2
3
M
S PRESSURE SWITCH
S REMOTE MONITORING
S FIREPLACE SWITCH
S FAULT SIGNAL
S FAULT SIGNAL
Extract air
Outdoor air to the unit
Supply air to the dwelling
Exhaust air
Supply air from cell
blue/red switch
RS-485 BUS
connection box (on top of the unit)
FAULT SIGNAL
FIREPLACE SWITCH
FAN CONTROL
FUSE
MOLEX CONNECTOR
S
E
