3-2
Initiating Device Circuits are used for wiring smoke and heat detectors to the AutoPulse Z-10. Be
aware that correct operation of the AutoPulse Z-10 depends on the proper installation and
placement of smoke and heat detectors. This is particularly true when installing a cross-zoned,
agent release system.
With a cross-zoned system,
the detectors in the room must be installed so that each successive
detector in the space being protected is on an alternating zone pattern.
Ensure that there are
at least two detectors in each protected space, and reduce the detector installation spacing to 0.7
the linear spacing. The location and spacing of detectors shall be in accordance with the
requirements of Section 5.7.3 of the National Fire Alarm Code (NFPA 72), 2002 Edition. In the
following example, the shaded detectors are on Zone 1 and the non-shaded detectors are on
Zone 2. The zone location is indicated by the blinking yellow LED. After ACK, the LED for the
affected circuit will continue to blink.
Adhere to the following guidelines when wiring IDCs:
All wiring must be from 12 AWG (max.) to 18 AWG (min.).
Conductors must test free of all grounds.
All wiring is supervised and power limited.
Leave 3.3K, 1/2W resistor across all unused IDC terminals. See note 4 in
Figure 3-1
(two-
wire).
Terminate Style B (Class B) circuits with a listed 3.3K, 1W (Part No. 431210) end-of-line
resistor. See note 5 in
Figure 3-1
.
Terminate Style D (Class A) circuits with a listed 3.3K, 1 W (Part No. 431210) end-of-line
resistor. See note 6 in
Figure 3-1
.
For Canadian applications, attach the following resistor to a ULC-listed EOL device.
Part No. 431210 3.3K, 1W resistor
Maximum line resistance for a circuit is 50 Ohms.
Maximum number of smoke/heat detectors per IDC is 30.
Maximum detector standby current is 3mA.
Voltage rating – nominal 24 VDC, 0.5V peak-to-peak ripple (max.)
For all applications, the maximum voltage (open circuit) is 28 VDC. Maximum current is
75mA.
When IDC wiring is routed outside the building, use Listed Secondary Protector 430685. A
protector must be installed at the building entrance such that protected wiring is segregated
from unprotected (outdoor) wiring.
Continued on next page
Wiring Initiating Device Circuits
Guidelines
Содержание AutoPulse Z-10
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