Johnson Controls tyco Power Pro Series Reference Manual page 42

Smoke Detector Wiring
All zones defined as Fire must be wired according to the following diagram:
Figure 2-34 Smoke Detector Wiring
See "[001] Zone Types" on page 82 for fire zone operation.
Note: Smoke detectors must be latching type. To reset a smoke detector, enter [*][7][2].
Table 2-9 Compatible 4-Wire Smoke Detectors
FSA-410x
FSA-410xT
FSA-410xS
FSA-410xST
Current ratings for DSC FSA-410 Series: 25mA - 90mA
Fire Zone Wiring: 2-wire Smoke Detectors
If PGM 2 is programmed for 2-wire smoke detector connection, the detectors must be wired according to the following dia-
gram:
Figure 2-35 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.
Section 2: Installation
FSA-410xLST
FSA-410xR
FSA-410xRT
FSA-410xRS
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FSA-410xRST
FSA-410xLRST