Zones 1 to 6 (Terminals 17 to 28) on the panel are 24 VDC powered zones. For programming purposes, the zone numbers are 1 through 6. Do not mix detectors from different manufacturers on the same zone.
Caution: Performing a Sensor Reset momentarily drops power to the devices on zones 1-6. The panel views these zones as Open while power is absent.
When wiring powered zones for 2-wire smoke detectors, refer to the following specifications:
- Maximum wire length—3000 feet (18 AWG)
- Maximum voltage—28 VDC
- Maximum normal standby current—7.5 mA DC
- Maximum line impedance—100 Ohms
- Maximum short circuit current—63 mA
The voltage sensing Terminal measures the voltage across a 3.3k Ohm EOL resistor to ground. Use Model 309 3.3k Ohm resistors. Dry contact sensing devices can be used in series (normally‑closed) or in parallel (normally‑open).
Operational Parameters
Each protection zone detects three conditions: Open, Normal, and Short.
Zone Response Time
A condition must be present on a zone for 500 milliseconds before it is detected by the panel. Ensure detection devices used on the protection zones are rated for use with this delay. Zones 1‑6 can also be programmed for a fast response delay of 160 milliseconds.
