NFS-320 Fire Alarm Questions | Fire Alarm Resource Center

What are the main differences between the NFS-320 and the NFS2-640?

The primary differences between the NFS-320 and NFS2-640 are loop capacity and physical assembly. The NFS2-640 is a modular system that supports one SLC loop...

Notifier NFS-320Answered3mo ago153 views

Can the NFS-320 be networked with other Notifier panels on NOTI-FIRE-NET, and what module is required?

Yes, the NFS-320 is networkable on NOTI-FIRE-NET in both standard and high-speed configurations [1]. Each panel requires either a Network Communication Module...

Notifier NFS-320Answered3mo ago59 views

How do I perform a walk test on the NFS-320, and how does the automatic detector sensitivity testing work?

The NFS-320 performs automatic detector sensitivity tests every 256 minutes, while the Walk Test uses detector LEDs to provide diagnostic feedback. During a...

Notifier NFS-320Answered3mo ago73 views

What batteries does the NFS-320 use, and when is an external battery box required?

The NFS-320 uses two 12-volt BAT Series batteries with a capacity ranging from 18 AH to 200 AH (Page 4) [1]. An external battery box is required for any...

Notifier NFS-320Answered3mo ago102 views

The NFS-320 has no built-in DACT — what communicator options are available and what constraint does the single internal option board slot create?

The NFS-320 supports several communicator options, including the UDACT (dual phone line), 411/411UDAC series, IPDACT-2/2UD (Internet), and IPGSM-4G or...

Notifier NFS-320Answered3mo ago55 views

How do I program the NFS-320 — what does VeriFire Tools do that front panel programming cannot, and what are the risks of relying on Auto-Program?

You can program the NFS-320 using the Autoprogram routine, the front panel keypad (with KDM-R2), or VeriFire Tools software [1]. While the keypad allows for...

Notifier NFS-320Answered3mo ago53 views

What are the NAC circuit specifications for the NFS-320, and how does the shared 6-amp power supply limit total NAC loading?

The NFS-320 features four built-in Notification Appliance Circuits (NACs) that can be configured for Class A (Style Z) or Class B (Style Y) operation (Page 25)...

Notifier NFS-320Answered3mo ago113 views

What is the maximum device capacity on the NFS-320 SLC loop in FlashScan mode, and what happens if a CLIP device is programmed on the same loop?

The NFS-320 SLC loop supports a maximum of 318 points, split between 159 intelligent detectors and 159 monitor or control modules (Page 34) [1]. I could not...

Notifier NFS-320Answered3mo ago75 views

What does the INVREP trouble mean on an NFS-320, and what are the most likely causes when a single device shows this after being replaced?

The INVREP trouble indicates that a device has returned a response to the panel that the panel did not recognize (Page 68) [1]. When this occurs after...

Notifier NFS-320Answered3mo ago97 views

How do I troubleshoot a ground fault on the NFS-320?

To troubleshoot a ground fault on the NFS-320, first identify the fault location using the onboard diagnostic LEDs and then isolate the field wiring to locate...

Notifier NFS-320Answered3mo ago81 views

Notifier NFS-320 Questions