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© System Sensor 2008 I56-2634-004EN
Pittway Tecnologica S.r.l, Via Caboto 19/3, 34147 Trieste, Italy
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T1 (-)
T1 (-)
T5 (+)
T5 (+)
B524IEFT-1
(Wiring when
base #2
not fitted)
T6 (+)
T6 (+)
T1 (-)
T1 (-)
T6 (+)
T5 (+)
T5 (+)
B524IEFT-1
T6 (+)
Using Isolator Bases
The A310E and A320E may be fitted with isolator bases (B524IEFT-1) if required. The basic configurations used on the
previous page are amended below.
Sensor Arrangement 1 with Isolator Bases
See figure 30. Analogue addressable sensors are wired through the aspirating unit. Loop connections are made to the
terminal block on the A300E main PCB.
Figure 30: Wiring Configuration 1 with Isolator Bases
A300E ASPIRATING SYSTEM ENCLOSURE
DISPLAY PCB
MAIN PCB
SENSOR#2
SENSOR#1
LOOP (+) IN
LOOP (-) IN
LOOP (+) OUT
LOOP (-)
OUT
Sensor Arrangement 2 with Isolator Bases
See Figure 40. The analogue sensors are connected directly to the fire control panel on the loop. The loop wiring is made
directly to the sensor bases.
Figure 40: Wiring Configuration 2 with Isolator Bases
A300E ASPIRATING SYSTEM ENCLOSURE
DISPLAY PCB
MAIN PCB
SENSOR#2
SENSOR#1
LOOP (+)
LOOP (-)
LOOP (+)
LOOP (-)