6
Vallox
121
MC
© VALLOX • We reserve the right to make changes without prior notice.
What the units include can vary depending on the sales area.
1
2
3
4
5
6
7
8
9
1
2
3
4
5
LINE
NEUTRAL
SLI
SNI
SLO
SNO
SFL
SFN
EFL
EFN
FSO
FSI
AHL
AHN
PHL
PHN
230V 50Hz
BL1
BL
BN
E/I
E/O
1 2 3 4
LED
90
°
C
130
°
C
R1
T1
T2
7022800
M
1 2 3 4
LED
-
+
S
LINE:
Phase voltage
NEUTRAL: Zero voltage
SLI:
Phase voltage to safety switch
SNI:
Zero voltage to safety switch
SLO:
Phase voltage to circuit board from safety switch
SNO:
Zero voltage to circuit board from safety switch
SNO:
Phase voltage to supply air fan
SFN:
Zero voltage to supply air fan
EFL:
Phase voltage to extract air fan
EFN:
Zero voltage to extract air fan
FSO:
Input to fireplace switch
FSI:
Fireplace switch output
AHL:
Phase voltage to post-heating
AHN:
Zero voltage to post-heating
PHL:
Phase voltage to additional heater
PHN:
Zero voltage to additional heater
BL:
Damper motor phase A
BL1:
Damper motor phase B
BN
Zero voltage to damper motor
E/I:
Input voltage to fault signal relay
E/O:
Fault signal relay output
DIP switch
Up
Down
1. Post-heating
Electric
VKL
2. Additional heating Electric
MLV
3. Unit type
Bypass
Input fan stopped
4. Winter function
Normal
Wet
Electrical diagram
TECHNICAL DATA
Supply
air fan
Post-heating electric
radiator 900W
Fireplace switch
Belimo damper
motor 230 VAC
Protective ground to
a separate bloc
k
Extract air NTC
Outdoor air NTC
Supply air to the dwelling NTC
Exhaust air NTC
Supply air from the cell NTC
Adjustment of freezing level
9. GND / -
8.
7.
6. GND / -
5.
4.
3. GND / -
2. 11.2 VDC / +
1.
FAULT SIGNAL
Adjustment of post-heating
DIP switch
PWM level adjustment
Programming
connector
An external 0–10 Vdc voltage input can be introduced
between control signal S and GND signal for fan control.
External controller or cooker hood
Safety/door switch
Extract
air fan
