36 FireLite SLC Wiring Manual — P/N 51309:P4 9/17/2014
Monitor Modules MMF-300 Wiring Diagrams
5.3 MMF-300 Wiring Diagrams
Following are wiring diagrams that depict NFPA Style B (Class B) and D (Class A) Initiating
Device Circuits (IDCs) using MMF-300 monitor modules.
The Initiating Device Circuit (IDC) is supervised and current-limited to 210 microamperes @ 24
VDC (nominal).
5.3.1 Wiring a NFPA Style B IDC with an MMF-300
Connect the SLC wiring to the module terminals 1 (–) and 2 (+).
Each module takes one address on the SLC. Use the rotary switches on the module to set it to the
required SLC address. Refer to “Setting an SLC address for a Single Point Module” on page 34.
The figure below shows typical wiring for a supervised and power-limited NFPA Style B IDC
using an MMF-300 module.
• Refer to the Device Compatibility Document for compatible smoke detectors.
• See “Power Considerations” on page 68 for information on supervising 24 VDC power.
47K ELR
(supplied
with module)
Heat
detector
SLC
MMF-300
IDC
24 VDC Power
Filtered, Regulated,
Resettable
24 VDC
Four-wire
Detector Base
Manual pull
station
From Supply
To Next IDC
or
Supervision Device
SLC-idcB1tpH.wmf
Figure 5.9 Typical Style B IDC Wiring with an MMF-300
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