Figure 16: 2-Wire Smoke Detector Wiring
Note:
Additional 2-wire smoke detectors must be connected in parallel as shown above. The
maximum number of smoke detectors on a 2-wire loop is 18.
Note:
Do not combine smoke detector models from different manufacturers on the same
circuit. Operation may be impaired. Refer to the smoke detector installation sheet when
positioning detectors.
Table 11: Table 19 Compatible 2-Wire Smoke Detectors
System Sensor
2W-B (UL)
2WT-B (UL)
2WTA-B (UL)
C2W-BA (ULC)
C2WT-BA (ULC)
C2WTA-BA (ULC)
Note:
If you use system sensor detectors
on a 2-wire loop, do not combine UL and
ULC detectors. For more information, refer
to the System Sensor installation manual.
Do not connect accessories, for example, a
polarity
reversal module to a 2-wire smoke detector
loop.
The UL compatibility ID for the system
sensor models is A.
Table 12: Table 1-2 2-Wire Smoke Detector Initiating Circuit
Item
Specification
Style/Class, Supervised, Power Limited
Style B (Class B)
Compatibility Identifier
HS2-1
DC Output Voltage
9.4 - 13.8 V
Detector Load
2mA (MAX)
Single End of Line Resistor (SEOL)
2200W
Loop Resistance
24Ω (MAX)
Standby Impedance
1250Ω (MIN)
Alarm Impedance
650Ω (MAX)
Alarm Current
86mA (MAX)
CO Detector
The following hardwired CO detector models can be used with PowerSeries Neo alarm controllers:
• System Sensor, Models CO1224, CO1224T, CO1224TR, UL Listed in File E307195; Model
CO1224A, ULC Listed in File E304075
• Macurco, Model CM-E1, UL File E354878
35
PowerSeries Neo HS2016/HS2016-4/HS3032/HS2064/HS2064 E/HS2128/HS2129 E Alarm Controller Reference
Manual
