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NRFC423MF111
2-pipe proportional 3 speed fan
(parameter 03 set to 00)
5AT
L
100-240 V~
N
MM
LS
EN61558
NRFC424MF112
2-pipe ON/OFF with ECM Fan
(parameter 03 set to 00)
5AT
L
100-240 V~
N
6/8
Terminal block
Function
designation
n.c.
n.c.
L
Live wire
HI
Fan speed high
MED
Fan speed medium
LOW
Fan speed low
N
Neutral conductor
II
III
I
M
Terminal block
Function
designation
n.c.
n.c.
L
Live wire
F-ON
Fan activation
VAL2
Valve / Compressor
VAL1
Valve / Electrostatic filter
N
Neutral conductor
Terminal block
designation
GND
A02
A01
GND
NTC
OCC
COM
B
A
4-pipe proportional 3 speed fan
5AT
L
100-240 V~
N
RS485
B
A
EN61558
Terminal block
designation
GND
FAN
A01
GND
NTC
OCC
COM
B
A
5AT
L
100-240 V~
N
RS485
B
A
Function
Signal ground
Valve control signal
Valve control signal
Signal ground
NTC Type II sensor
Occupancy contact
COM
D+
D-
(parameter 03 set to 01)
II
III
I
M
M
MM
LS
Function
Signal ground
ECM Fan
Valve control signal
Signal ground
NTC Type II sensor
Occupancy contact
COM
D+
D-
4-pipe ON/OFF with ECM Fan
(parameter 03 set to 01)
RS485
B
A
RS485
B
A
P100019338 B
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