Notifier Wheelock NH Series Horns User Manual

Wheelock ns/nh series, Ns series horn strobes nh series horns, General

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dn-6601:a • 10/16/09 — Page 1 of 4

Wheelock NS/NH Series

NS Series Horn Strobes
NH Series Horns

Audio/Visual Devices

dn-6601:a • J-134

General

The Wheelock Series NS Horn Strobe Appliances are

designed for indoor, wall and ceiling mount applications.
The Series NH Horn and the horn portion of the Series NS

include a selectable continuous horn tone or temporal pattern

(Code 3) with selectable dBA settings of 90 or 95 dBA.
Strobe options include 15/75cd or Wheelock’s Multi-Candela

strobe with field selectable candela settings of 15/30/75/

110cd.
These versatile Horn Strobe Appliances may be synchronized

when used in conjunction with the Wheelock SM or DSM Sync

Modules or a Power Supply with the Wheelock patented Sync

Protocol. Additionally, the audible may be silenced while main-

taining strobe activation.
All models of the Series NS and NH are designed for maxi-

mum performance, reliability and cost-effectiveness while

meeting or exceeding the latest requirements of NFPA 72/

ANSI 117.1/UFC and UL Standards 1971 and 464 as well as

meeting ADA requirements concerning photosensitive epi-

lepsy.

Features

• Field selectable Candela settings 15/30/75/110cd (24 VDC

Multi-Candela models) or 15/75cd in 12 or 24 VDC.

• Selectable Continuous Horn or Temporal (Code 3).
• 2 selectable dBA settings of 90 and 95 dBA in both tones.
• 12 and 24 VDC models with UL “Regulated Voltage” using

filtered DC or unfiltered VRMS input voltage.

• ADA/NFPA/UFC/ANSI compliant.
• Complies with OSHA 29, Part 1910.165.
• NH Horn is selectable 12 or 24 VDC in 1 unit.
• Synchronize with Wheelock SM or DSM Sync Module or

the Power Supply with built-in Sync Protocol.

• Patent Pending Universal Mounting Plate for single-gang,

double-gang 4” (10.16c m) square, or 100 mm European

backboxes, or Wheelock’s SHBB shallow surface backbox.

• Fast installation with IN/OUT screw terminals using #12 to

#18 AWG wires.

General Notes

• Strobes are designed to flash at 1 flash per second mini-

mum over their “Regulated Voltage Range.” Note that NFPA

72 specifies a flash rate of 1 to 2 flashes per second and

ADA Guidelines specify a flash rate of 1 to 3 flashes per

second.

• All candela ratings represent minimum effective Strobe

intensity based on UL Standard 1971.

• Series NS Strobe products are listed under UL Standard

1971 for indoor use with a temperature range of 32°F to

120°F (0°C to 49°C) and maximum humidity of 93% (± 2%).

• Series NH Horns are listed under UL Standard 464 for audi-

ble signal appliances (indoor use only).

“Regulated Voltage Range” is the newest terminology used
by UL to identify the voltage range. Prior to this change, UL
used the terminology “Listed Voltage Range.”

!

WARNING: PLEASE READ THESE
SPECIFICATIONS AND ASSOCIATED
INSTALLATION INSTRUCTIONS CAREFULLY
BEFORE USING, SPECIFYING OR APPLYING
THIS PRODUCT. FAILURE TO COMPLY WITH
ANY OF THESE INSTRUCTIONS, CAUTIONS
OR WARNINGS COULD RESULT IN PROPERTY
DAMAGE, AND SERIOUS INJURY OR DEATH .

Table 1: Ratings Per UL Standard 1971

Model

Input

Voltage

VDC

Regulated

Voltage

Range

VDC/FWR

Strobe

Candela

(CD)

NS-24MCW

24

16.0-33.0

15/30/75/110

NS-241575W

24

16.0-33.0

15 (75 on axis)

NS-121575W

12

8.0 - 17.5

15 (75 on axis)

NS-24MCC

24

16.0-33.0

15/30/75/95

NS-24MCCH

24

16.0-33.0

115/177

Table 2: dBA Ratings for Series NS/NH Horn

Description Volume

Reverberant

dBA

@ 10ft per UL

464

Anechoic dBA

@ 10ft

12VDC 24VDC 12VDC 24VDC

NS Horn Strobe

NH Horn

Multi-Candela Indicator

(bottom of Strobe Lens)

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