Figure 17: Dedicated Class A/B SPM circuits
5.3.2 Wiring shared Abort/Manual Release with an external resistor
Adhere to Figure 18 and the following guidelines when wiring SPM circuits with an external current-limiting resistor:
• Use only manual release and abort switches that are UL Listed for fire use.
• To ensure that a manual release switch causes a short condition and not a current-limited condition, connect the manual release switch
between the first abort switch and the 4004R. See Figure 18, item 8.
• Both manual release stations and abort switches must be normally open.
• All wiring must be 12 AWG maximum to 18 AWG minimum.
• Conductors must test free of all grounds.
• All wiring is supervised and power limited.
• Leave 3.3 K, 1/2 W (378-115) resistor across all unused SPM terminals. See item 4 in Figure 18.
• Terminate Style B (Class B) circuits with a listed 3.3K, 1W (Simplex Part Number 733-893) end-of-line resistor.
• For Canadian applications, use ULC-listed end-of-line resistors 2081-9010C, 2081-9018, or 2081-9037C.
• Terminate Style D (Class A) circuits with a listed 3.3K, 1 W (Simplex Part Number 733-893) end-of-line resistor.
• Maximum line resistance is 50 Ohms.
• Normal condition (no devices closed). Current at 24 VDC: 6.0 mA
• Manual Release condition. Current at 24 VDC: 25 mA
• SPM Circuits do not support the connection of smoke or heat detectors.
• When SPM wiring is routed outside the building, use Listed Secondary Protector 2081-9044 or 2081-9028. A protector must be
installed at the building entrance such that protected wiring is segregated from unprotected (outdoor) wiring.
page 25 579-354 Rev. X
4004R Fire Alarm installation, programming, and operating instructions
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