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G
®
PREMASGARD
Mounting diagram
3570 Pa
(A)
TYPES OF MONITORING:
(A)
Below-atmospheric pressure:
P1 (+) is not connected but open against atmosphere
P2 (–) connected to inside of duct
(B)
Filter:
P1 (+) connected upstream of filter
P2 (–) connected downstream of filter
(C)
Ventilator:
P1 (+) connected downstream of ventilator
P2 ( – ) connected upstream of ventilator
Pressure connections at the pressure switch are marked with
P1 (+) for higher pressure and
P2 (–) for lower pressure.
3-wire-
PREMASGARD
connection
-
-
230V AC
+
+
24V AC/DC
1 2 3
711x
3570 Pa
(B)
®
711x - U
3-wire-
connection
230V AC
PLC
PC
24V AC/DC
PREMASGARD
3570 Pa
(C)
PREMASGARD
®
711x - I
-
-
PLC
+
+
PC
1 2 3
12
®
711x
2-wire-
PREMASGARD
connection
-
-
230V AC
+
+
24V DC
1 2 3
Rev. 2019 - V28
®
711x - I
PLC
Working
resistance
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