Four-Wire Smoke Detectors - Fire-Lite SENSISCAN 2000 Nstallation, Operation And Programming Manual

6.9 F -W
OUR IRE
IZ Series
Initiating Device
Circuit
24VDC Power
Supply
Power-limited,
UL listed for Fire
Protective
Signaling
MPS-24AF TB3 Term. 1 (+) & 2 (-)
MPS-24BF TB2 Term. 1 (+) & 2 (-)
IZ-4F or
IZ-8F
Initiating Device
Circuit
24VDC Power
Supply
Power-limited,
UL listed for Fire
Protective
Signaling
MPS-24AF TB3 Term. 1 (+) & 2 (-)
MPS-24BF TB2 Term. 1 (+) & 2 (-)
R = (20.6 - V
MAX
(N)(I ) + (NA)(I
S
S D
MOKE ETECTORS

Four-Wire Smoke Detectors

Employing Four-Wire Smoke Detectors (Style D)
UL-listed 24 VDC
Four-Wire Smoke Detectors
Figure 6-5: Employing Four-Wire Smoke Detectors (Style B)
)
where:
OM
) + (I )
A R
S2000 15017 Rev H 10/08/96 P/N 15017:H
UL-listed 24 VDC
Figure 6-4:
All connections are supervised and power-limited
All connections are supervised and power-limited
UL-Listed Power
Supervision
Relay
4.7K 1/2-watt End-
Of-Line Resistor,
Part #71245
UL-Listed Power
Supervision
Relay
45