Notifier N100-ISO User Manual

N100-ISO(A)

2243devices.wmf

isolator
module
or base

isolator
module
or base

detector module

25 DEVICES

N100-ISO(A)

Fault Isolator Module
for FireWarden Series Panels

General

The NOTIFIER N100-ISO(A) Fault Isolator Module is used
with FireWarden Series panels to protect the system against
wire-to-wire short circuits on the SLC loop. The N100-ISO(A)
should be placed between each device on the SLC loop to iso­late a short-circuit problem between the modules. It is required
for true Style 7 operation so that other devices can continue to
operate normally in the event of a short-circuit on the SLC.

Features

• Powered by SLC loop directly, no external power required.

• Mounts in standard junction boxes (4.0"/10.16 cm square,

2.125"/5.398 cm deep).

• Integral LED blinks to indicate normal condition. Illuminates
steady when short circuit condition is detected.

• High noise (EMF/RFI) immunity.

Applications

The Fault Isolator Modules should be spaced between groups
of sensors in a loop to protect the rest of the loop. Use to iso­late short circuit problems within a section of a loop so that
other sections can continue to operate normally. The N100­ISO(A) supports a maximum of 25 devices in-between isola­tors, except when using relay bases.

NOTE: LOADS PER RELAY BASE AND ISOLATORS/ISOLATOR
BASES: The maximum number of addressable devices between
isolators (or B224BIA isolator bases) is 25 devices.

DN-6994:B • A1-370

Addressable

• Dimensions: 4.5”H x 4.5”W x 0.25” D (11.43 cm H x

11.43 cm W x 0.635 cm D).

Construction

The face plate is made of off-white plastic. Module includes
yellow LED indicator that pulses when normal and illuminates
steady when a short is detected.

B224RB relay bases draw more current than other intelligent
devices. When calculating the 25-device maximum, B224RB rep­resents 2.5 DEVICES; see example on page 2.

NOTE: ON MAXIMUM NUMBER OF DEVICES: See the
Manual (52304) for information on loss of addresses due to current
limitations. Each module or base added reduces the capacity of
address positions in an
purchased after February 1995 to meet the aforementioned
requirements. If the
February 1995, each isolator used reduces the capacity of an
by two address positions. Requirements differ as applied to relay
bases; see note above.

SLC. All SLC field devices must have been

SLC field devices were purchased prior to

SLC

SLC

Specifications

• Operating voltage: 15 – 32 VDC (peak).

• Maximum current upon activation due to short circuit:

refer to the manual for the main FACP.

• Standby current: 450 μA maximum; N100-ISO(A) is not
isolating – relay closed.

• Temperature range: 32°F to 120°F (0°C to 49°C).

• Relative humidity: 10% to 93%.

• Weight: 5 oz. (150 grams).

Operation

Automatically opens circuit when the line voltage drops below
four volts. Fault Isolator Modules should be spaced between
groups of addressable devices (maximum 25, see notes on
page 1) in a loop to protect the rest of the loop. If a short
occurs between any two isolators, then both isolators immedi­ately switch to an open circuit state and isolate the groups of
sensors between them. The remaining units on the loop con­tinue to fully operate.

In Style 4 loops, the N100-ISO(A) is generally used at each T­tap branch, to limit the effect of short circuits on a branch to the
devices on that branch. The LED indicator is on continuously
during a short circuit condition.

The N100-ISO(A) Fault Isolator Module automatically restores
the shorted portion of the communications loop to normal.

Installation

• Mount on a standard junction box (4.0"/10.16 cm square)
which is at least 2.125"/5.398 cm deep.

• Terminal screws are provided for “in and out” wiring.

• Installation instructions are provided with each module.

• Surface-mount box is available as an option.

DN-6994:B • 01/05/2012 — Page 1 of 2

Made in the U.S. A.

Engineering Specifications

Examples of Device Counts

(see notes under Applications)

52389-2011g.wmf

isolator
module
or base

isolator
module

or base

detector with

standard base

module

Starts

Next Count

detector with

relay base

Counts as...

(less than 25 total)

Fault Isolator Modules shall be provided to automatically iso­late wire-to-wire short circuits on an SLC loop. The Fault Isola­tor Module shall limit the number of modules or detectors that
may be rendered inoperative by a short circuit fault on the SLC
Loop. If a wire-to-wire short occurs, the Fault Isolator Module
shall automatically open-circuit (disconnect) the SLC loop.
When the short circuit condition is corrected, the Fault Isolator
Module shall automatically reconnect the isolated section of
the SLC loop. The Fault Isolator Module shall not require any
address-setting, and its operations shall be totally automatic. It
shall not be necessary to replace or reset an Fault Isolator
Module after its normal operation. The Fault Isolator Module
shall mount in a standard 4" (10.16 cm) deep electrical box, in
a surface-mounted backbox, or in the Fire Alarm Control
Panel. It shall provide a single LED which shall flash to indi­cate that the Isolator is operational and shall illuminate steadily
to indicate that a short circuit condition has been detected and
isolated.

Agency Approvals and Listings

These listings and approvals apply to the modules specified in
this document. In some cases, certain modules or applications
may not be listed by certain approval agencies, or listing may
be in progress. Consult factory for listing details.

• UL Listed: S635.

• CSFM: 7300-0028:0238.

• MEA: 427-91-E Vol. 9.

• FM Approved.

Product Line Information

NOTE: “A” suffix indicates ULC Listed model.

N100-ISO: Isolator module.

N100-ISOA: Same as N100-ISO with ULC Listing.

SMB500: Optional surface-mount backbox.

Notifier® is a registered trademark of Honeywell International Inc.
Notifier® and FireWarden® are registered trademarks of Honeywell
International Inc.
©2012 by Honeywell International Inc. All rights reserved. Unauthorized use
of this document is strictly prohibited.

Page 2 of 2 — DN-6994:B • 01/05/2012

For more information, contact Notifier. Phone: [phone], FAX: [phone].

This document is not intended to be used for installation purposes.

We try to keep our product information up-to-date and accurate.

We cannot cover all specific applications or anticipate all requirements.

All specifications are subject to change without notice.

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