VALLOX 252 D
INTERNAL ELECTRICAL CONNECTIONS
15
VALLOX 252 D - Internal wiring diagram
FAN CONTROL WITH VOLTAGE /
CURRENT SIGNALS
USING JUMPER IN VOLTAGE SIGNAL
CONTROL (FACTORY SETTING)
USING JUMPER IN CURRENT
SIGNAL CONTROL
TE 4 (EXTRACT AIR)
TE 3 (OUTDOOR AIR)
TE 2 (SUPPLY AIR)
TE 1 (EXHAUST AIR)
HEAT RECOVERY CELL
MOTHERBOARD
FAUL
T
FAUL
T
FIREPLACE
REM
FERN
REMOTE MONITORING GND
REMOTE MONITORING S
FIREPLACE SWITCH
FAULT SIGNAL
TF
= Supply air fan 2x230W
PF
= Extract air fan 2x230W
TR
= Transformer 230V 4A/24V 25VA
C
= Capacitor 6
µ
F
H1
= Interference suppressor motherboard
H2
= Interference suppressor motherboard
FG
= Damper motor 24V
TE
= Temperature sensors
R3
= Auxiliary resistor 4.7kOhm
R4
= Auxiliary resistor 6.8kOhm
S
= Service switch (Door switch)
LP1
= Electric heating unit 2,500W (preheater, option)
LP2
= Electric heating unit 2,500W (post-heater, option)
SV
= Regulating valve (water radiator, option)
TZ1
= Overheating pro60˚C
TZ2
= Overheating pro95˚C (manual reset)
PDS1 = Pressure difference switch for supply air ducts (option)
PDS2 = Pressure difference switch for extract air ducts (option)
F1
= 2A fuse for supply air fans
F2
= 2A fuse for extract air fans
F3
= 800mA fuse for motherboard
